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ee37620b6a
ffmpeg/libavformat/movenc.c
Martin Storsjö ee37620b6a movenc: Add a flag for indicating a discontinuous fragment 
This allows creating a later mp4 fragment without sequentially
writing the earlier ones before (when called from a segmenter).

Normally when writing a fragmented mp4 file sequentially, the
first timestamps of a fragment are adjusted to match the
end of the previous fragment, to make sure the timestamp is the
same, even if it is calculated as the sum of previous fragment
durations. (And for the first packet in a file, the offset of
the first packet is written using an edit list.)

When writing an individual mp4 fragment discontinuously like this
(with potentially writing the earlier fragments separately later),
there's a risk of getting a gap in the timeline if the duration
field of the last packet in the previous fragment doesn't match up
with the start time of the next fragment.

Using this requires setting -avoid_negative_ts make_non_negative
(or -avoid_negative_ts 0).

Signed-off-by: Martin Storsjö <martin@martin.st>
2014-11-26 09:56:56 +02:00

4192 lines
146 KiB
C
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/*
* MOV, 3GP, MP4 muxer
* Copyright (c) 2003 Thomas Raivio
* Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include <inttypes.h>
#include "movenc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "riff.h"
#include "avio.h"
#include "isom.h"
#include "avc.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/vc1_common.h"
#include "internal.h"
#include "libavutil/avstring.h"
#include "libavutil/intfloat.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "hevc.h"
#include "rtpenc.h"
#include "mov_chan.h"
#undef NDEBUG
#include <assert.h>
static const AVOption options[] = {
{ "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
{ "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
{ "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
};
#define MOV_CLASS(flavor)\
static const AVClass flavor ## _muxer_class = {\
.class_name = #flavor " muxer",\
.item_name = av_default_item_name,\
.option = options,\
.version = LIBAVUTIL_VERSION_INT,\
};
static int utf8len(const uint8_t *b)
{
int len = 0;
int val;
while (*b) {
GET_UTF8(val, *b++, return -1;)
len++;
}
return len;
}
//FIXME support 64 bit variant with wide placeholders
static int64_t update_size(AVIOContext *pb, int64_t pos)
{
int64_t curpos = avio_tell(pb);
avio_seek(pb, pos, SEEK_SET);
avio_wb32(pb, curpos - pos); /* rewrite size */
avio_seek(pb, curpos, SEEK_SET);
return curpos - pos;
}
static int co64_required(const MOVTrack *track)
{
if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
return 1;
return 0;
}
/* Chunk offset atom */
static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
{
int i;
int mode64 = co64_required(track); // use 32 bit size variant if possible
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
if (mode64) {
ffio_wfourcc(pb, "co64");
} else
ffio_wfourcc(pb, "stco");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, track->entry); /* entry count */
for (i = 0; i < track->entry; i++) {
if (mode64 == 1)
avio_wb64(pb, track->cluster[i].pos + track->data_offset);
else
avio_wb32(pb, track->cluster[i].pos + track->data_offset);
}
return update_size(pb, pos);
}
/* Sample size atom */
static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
{
int equalChunks = 1;
int i, j, entries = 0, tst = -1, oldtst = -1;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsz");
avio_wb32(pb, 0); /* version & flags */
for (i = 0; i < track->entry; i++) {
tst = track->cluster[i].size / track->cluster[i].entries;
if (oldtst != -1 && tst != oldtst)
equalChunks = 0;
oldtst = tst;
entries += track->cluster[i].entries;
}
if (equalChunks && track->entry) {
int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
avio_wb32(pb, sSize); // sample size
avio_wb32(pb, entries); // sample count
} else {
avio_wb32(pb, 0); // sample size
avio_wb32(pb, entries); // sample count
for (i = 0; i < track->entry; i++) {
for (j = 0; j < track->cluster[i].entries; j++) {
avio_wb32(pb, track->cluster[i].size /
track->cluster[i].entries);
}
}
}
return update_size(pb, pos);
}
/* Sample to chunk atom */
static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
{
int index = 0, oldval = -1, i;
int64_t entryPos, curpos;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsc");
avio_wb32(pb, 0); // version & flags
entryPos = avio_tell(pb);
avio_wb32(pb, track->entry); // entry count
for (i = 0; i < track->entry; i++) {
if (oldval != track->cluster[i].samples_in_chunk) {
avio_wb32(pb, i + 1); // first chunk
avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
avio_wb32(pb, 0x1); // sample description index
oldval = track->cluster[i].samples_in_chunk;
index++;
}
}
curpos = avio_tell(pb);
avio_seek(pb, entryPos, SEEK_SET);
avio_wb32(pb, index); // rewrite size
avio_seek(pb, curpos, SEEK_SET);
return update_size(pb, pos);
}
/* Sync sample atom */
static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
{
int64_t curpos, entryPos;
int i, index = 0;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
avio_wb32(pb, 0); // version & flags
entryPos = avio_tell(pb);
avio_wb32(pb, track->entry); // entry count
for (i = 0; i < track->entry; i++) {
if (track->cluster[i].flags & flag) {
avio_wb32(pb, i + 1);
index++;
}
}
curpos = avio_tell(pb);
avio_seek(pb, entryPos, SEEK_SET);
avio_wb32(pb, index); // rewrite size
avio_seek(pb, curpos, SEEK_SET);
return update_size(pb, pos);
}
static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 0x11); /* size */
if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
else ffio_wfourcc(pb, "damr");
ffio_wfourcc(pb, "FFMP");
avio_w8(pb, 0); /* decoder version */
avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
avio_w8(pb, 0x00); /* Mode change period (no restriction) */
avio_w8(pb, 0x01); /* Frames per sample */
return 0x11;
}
static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
{
GetBitContext gbc;
PutBitContext pbc;
uint8_t buf[3];
int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
if (track->vos_len < 7)
return -1;
avio_wb32(pb, 11);
ffio_wfourcc(pb, "dac3");
init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
fscod = get_bits(&gbc, 2);
frmsizecod = get_bits(&gbc, 6);
bsid = get_bits(&gbc, 5);
bsmod = get_bits(&gbc, 3);
acmod = get_bits(&gbc, 3);
if (acmod == 2) {
skip_bits(&gbc, 2); // dsurmod
} else {
if ((acmod & 1) && acmod != 1)
skip_bits(&gbc, 2); // cmixlev
if (acmod & 4)
skip_bits(&gbc, 2); // surmixlev
}
lfeon = get_bits1(&gbc);
init_put_bits(&pbc, buf, sizeof(buf));
put_bits(&pbc, 2, fscod);
put_bits(&pbc, 5, bsid);
put_bits(&pbc, 3, bsmod);
put_bits(&pbc, 3, acmod);
put_bits(&pbc, 1, lfeon);
put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
put_bits(&pbc, 5, 0); // reserved
flush_put_bits(&pbc);
avio_write(pb, buf, sizeof(buf));
return 11;
}
/**
* This function writes extradata "as is".
* Extradata must be formatted like a valid atom (with size and tag).
*/
static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
{
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return track->enc->extradata_size;
}
static void put_descr(AVIOContext *pb, int tag, unsigned int size)
{
int i = 3;
avio_w8(pb, tag);
for (; i > 0; i--)
avio_w8(pb, (size >> (7 * i)) | 0x80);
avio_w8(pb, size & 0x7F);
}
static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
{
int64_t pos = avio_tell(pb);
int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, "esds");
avio_wb32(pb, 0); // Version
// ES descriptor
put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
avio_wb16(pb, track->track_id);
avio_w8(pb, 0x00); // flags (= no flags)
// DecoderConfig descriptor
put_descr(pb, 0x04, 13 + decoder_specific_info_len);
// Object type indication
if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
track->enc->codec_id == AV_CODEC_ID_MP3) &&
track->enc->sample_rate > 24000)
avio_w8(pb, 0x6B); // 11172-3
else
avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
// the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
// plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_w8(pb, 0x15); // flags (= Audiostream)
else
avio_w8(pb, 0x11); // flags (= Visualstream)
avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
avio_wb32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
if (track->enc->rc_max_rate != track->enc->rc_min_rate ||
track->enc->rc_min_rate == 0)
avio_wb32(pb, 0); // vbr
else
avio_wb32(pb, track->enc->rc_max_rate); // avg bitrate
if (track->vos_len) {
// DecoderSpecific info descriptor
put_descr(pb, 0x05, track->vos_len);
avio_write(pb, track->vos_data, track->vos_len);
}
// SL descriptor
put_descr(pb, 0x06, 1);
avio_w8(pb, 0x02);
return update_size(pb, pos);
}
static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
avio_wl32(pb, track->tag); // store it byteswapped
track->enc->codec_tag = av_bswap16(track->tag >> 16);
ff_put_wav_header(pb, track->enc);
return update_size(pb, pos);
}
static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "wfex");
ff_put_wav_header(pb, track->enc);
return update_size(pb, pos);
}
static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
{
uint32_t layout_tag, bitmap;
int64_t pos = avio_tell(pb);
layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
track->enc->channel_layout,
&bitmap);
if (!layout_tag) {
av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
"lack of channel information\n");
return 0;
}
avio_wb32(pb, 0); // Size
ffio_wfourcc(pb, "chan"); // Type
avio_w8(pb, 0); // Version
avio_wb24(pb, 0); // Flags
avio_wb32(pb, layout_tag); // mChannelLayoutTag
avio_wb32(pb, bitmap); // mChannelBitmap
avio_wb32(pb, 0); // mNumberChannelDescriptions
return update_size(pb, pos);
}
static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "wave");
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "frma");
avio_wl32(pb, track->tag);
if (track->enc->codec_id == AV_CODEC_ID_AAC) {
/* useless atom needed by mplayer, ipod, not needed by quicktime */
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "mp4a");
avio_wb32(pb, 0);
mov_write_esds_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
mov_write_amr_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
mov_write_ac3_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_ALAC) {
mov_write_extradata_tag(pb, track);
} else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
mov_write_ms_tag(pb, track);
}
avio_wb32(pb, 8); /* size */
avio_wb32(pb, 0); /* null tag */
return update_size(pb, pos);
}
static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
{
uint8_t *unescaped;
const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
int unescaped_size, seq_found = 0;
int level = 0, interlace = 0;
int packet_seq = track->vc1_info.packet_seq;
int packet_entry = track->vc1_info.packet_entry;
int slices = track->vc1_info.slices;
PutBitContext pbc;
if (track->start_dts == AV_NOPTS_VALUE) {
/* No packets written yet, vc1_info isn't authoritative yet. */
/* Assume inline sequence and entry headers. This will be
* overwritten at the end if the file is seekable. */
packet_seq = packet_entry = 1;
}
unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
if (!unescaped)
return AVERROR(ENOMEM);
start = find_next_marker(track->vos_data, end);
for (next = start; next < end; start = next) {
GetBitContext gb;
int size;
next = find_next_marker(start + 4, end);
size = next - start - 4;
if (size <= 0)
continue;
unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
init_get_bits(&gb, unescaped, 8 * unescaped_size);
if (AV_RB32(start) == VC1_CODE_SEQHDR) {
int profile = get_bits(&gb, 2);
if (profile != PROFILE_ADVANCED) {
av_free(unescaped);
return AVERROR(ENOSYS);
}
seq_found = 1;
level = get_bits(&gb, 3);
/* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
* width, height */
skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
skip_bits(&gb, 1); /* broadcast */
interlace = get_bits1(&gb);
skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
}
}
if (!seq_found) {
av_free(unescaped);
return AVERROR(ENOSYS);
}
init_put_bits(&pbc, buf, 7);
/* VC1DecSpecStruc */
put_bits(&pbc, 4, 12); /* profile - advanced */
put_bits(&pbc, 3, level);
put_bits(&pbc, 1, 0); /* reserved */
/* VC1AdvDecSpecStruc */
put_bits(&pbc, 3, level);
put_bits(&pbc, 1, 0); /* cbr */
put_bits(&pbc, 6, 0); /* reserved */
put_bits(&pbc, 1, !interlace); /* no interlace */
put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
put_bits(&pbc, 1, !slices); /* no slice code */
put_bits(&pbc, 1, 0); /* no bframe */
put_bits(&pbc, 1, 0); /* reserved */
/* framerate */
if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
else
put_bits32(&pbc, 0xffffffff);
flush_put_bits(&pbc);
av_free(unescaped);
return 0;
}
static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
{
uint8_t buf[7] = { 0 };
int ret;
if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
return ret;
avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
ffio_wfourcc(pb, "dvc1");
track->vc1_info.struct_offset = avio_tell(pb);
avio_write(pb, buf, sizeof(buf));
avio_write(pb, track->vos_data, track->vos_len);
return 0;
}
static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, track->vos_len + 8);
ffio_wfourcc(pb, "glbl");
avio_write(pb, track->vos_data, track->vos_len);
return 8 + track->vos_len;
}
/**
* Compute flags for 'lpcm' tag.
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
*/
static int mov_get_lpcm_flags(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F64BE:
return 11;
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_F64LE:
return 9;
case AV_CODEC_ID_PCM_U8:
return 10;
case AV_CODEC_ID_PCM_S16BE:
case AV_CODEC_ID_PCM_S24BE:
case AV_CODEC_ID_PCM_S32BE:
return 14;
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S24LE:
case AV_CODEC_ID_PCM_S32LE:
return 12;
default:
return 0;
}
}
static int get_cluster_duration(MOVTrack *track, int cluster_idx)
{
int64_t next_dts;
if (cluster_idx >= track->entry)
return 0;
if (cluster_idx + 1 == track->entry)
next_dts = track->track_duration + track->start_dts;
else
next_dts = track->cluster[cluster_idx + 1].dts;
return next_dts - track->cluster[cluster_idx].dts;
}
static int get_samples_per_packet(MOVTrack *track)
{
int i, first_duration;
/* use 1 for raw PCM */
if (!track->audio_vbr)
return 1;
/* check to see if duration is constant for all clusters */
if (!track->entry)
return 0;
first_duration = get_cluster_duration(track, 0);
for (i = 1; i < track->entry; i++) {
if (get_cluster_duration(track, i) != first_duration)
return 0;
}
return first_duration;
}
static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int version = 0;
uint32_t tag = track->tag;
if (track->mode == MODE_MOV) {
if (mov_get_lpcm_flags(track->enc->codec_id))
tag = AV_RL32("lpcm");
version = 2;
}
avio_wb32(pb, 0); /* size */
avio_wl32(pb, tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
/* SoundDescription */
avio_wb16(pb, version); /* Version */
avio_wb16(pb, 0); /* Revision level */
avio_wb32(pb, 0); /* Reserved */
if (version == 2) {
avio_wb16(pb, 3);
avio_wb16(pb, 16);
avio_wb16(pb, 0xfffe);
avio_wb16(pb, 0);
avio_wb32(pb, 0x00010000);
avio_wb32(pb, 72);
avio_wb64(pb, av_double2int(track->enc->sample_rate));
avio_wb32(pb, track->enc->channels);
avio_wb32(pb, 0x7F000000);
avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
avio_wb32(pb, track->sample_size);
avio_wb32(pb, get_samples_per_packet(track));
} else {
/* reserved for mp4/3gp */
avio_wb16(pb, 2);
avio_wb16(pb, 16);
avio_wb16(pb, 0);
avio_wb16(pb, 0); /* packet size (= 0) */
avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
track->enc->sample_rate : 0);
avio_wb16(pb, 0); /* Reserved */
}
if (track->mode == MODE_MOV &&
(track->enc->codec_id == AV_CODEC_ID_AAC ||
track->enc->codec_id == AV_CODEC_ID_AC3 ||
track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
track->enc->codec_id == AV_CODEC_ID_ALAC ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV))
mov_write_wave_tag(pb, track);
else if (track->tag == MKTAG('m','p','4','a'))
mov_write_esds_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
mov_write_amr_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_AC3)
mov_write_ac3_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
mov_write_extradata_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
mov_write_wfex_tag(pb, track);
else if (track->vos_len > 0)
mov_write_glbl_tag(pb, track);
if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_chan_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_d263_tag(AVIOContext *pb)
{
avio_wb32(pb, 0xf); /* size */
ffio_wfourcc(pb, "d263");
ffio_wfourcc(pb, "FFMP");
avio_w8(pb, 0); /* decoder version */
/* FIXME use AVCodecContext level/profile, when encoder will set values */
avio_w8(pb, 0xa); /* level */
avio_w8(pb, 0); /* profile */
return 0xf;
}
/* TODO: No idea about these values */
static int mov_write_svq3_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x15);
ffio_wfourcc(pb, "SMI ");
ffio_wfourcc(pb, "SEQH");
avio_wb32(pb, 0x5);
avio_wb32(pb, 0xe2c0211d);
avio_wb32(pb, 0xc0000000);
avio_w8(pb, 0);
return 0x15;
}
static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "avcC");
ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
return update_size(pb, pos);
}
static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "hvcC");
ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
return update_size(pb, pos);
}
/* also used by all avid codecs (dv, imx, meridien) and their variants */
static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
{
int i;
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "ACLR");
ffio_wfourcc(pb, "ACLR");
ffio_wfourcc(pb, "0001");
avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "APRG");
ffio_wfourcc(pb, "APRG");
ffio_wfourcc(pb, "0001");
avio_wb32(pb, 1); /* unknown */
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 120); /* size */
ffio_wfourcc(pb, "ARES");
ffio_wfourcc(pb, "ARES");
ffio_wfourcc(pb, "0001");
avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
avio_wb32(pb, track->enc->width);
/* values below are based on samples created with quicktime and avid codecs */
if (track->vos_data[5] & 2) { // interlaced
avio_wb32(pb, track->enc->height / 2);
avio_wb32(pb, 2); /* unknown */
avio_wb32(pb, 0); /* unknown */
avio_wb32(pb, 4); /* unknown */
} else {
avio_wb32(pb, track->enc->height);
avio_wb32(pb, 1); /* unknown */
avio_wb32(pb, 0); /* unknown */
if (track->enc->height == 1080)
avio_wb32(pb, 5); /* unknown */
else
avio_wb32(pb, 6); /* unknown */
}
/* padding */
for (i = 0; i < 10; i++)
avio_wb64(pb, 0);
/* extra padding for stsd needed */
avio_wb32(pb, 0);
return 0;
}
static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
return 0;
if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
else if (track->enc->codec_id == AV_CODEC_ID_HEVC) tag = MKTAG('h','e','v','1');
else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
else if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE) tag = MKTAG('m','p','4','s');
return tag;
}
static const AVCodecTag codec_ipod_tags[] = {
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
{ AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
{ AV_CODEC_ID_NONE, 0 },
};
static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
// keep original tag for subs, ipod supports both formats
if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
(tag == MKTAG('t', 'x', '3', 'g') ||
tag == MKTAG('t', 'e', 'x', 't'))))
tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
"Quicktime/Ipod might not play the file\n");
return tag;
}
static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag;
if (track->enc->width == 720) /* SD */
if (track->enc->height == 480) /* NTSC */
if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
else tag = MKTAG('d','v','c',' ');
else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
else tag = MKTAG('d','v','p','p');
else if (track->enc->height == 720) /* HD 720 line */
if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
else tag = MKTAG('d','v','h','p');
else if (track->enc->height == 1080) /* HD 1080 line */
if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
else tag = MKTAG('d','v','h','6');
else {
av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
return 0;
}
return tag;
}
static const struct {
enum AVPixelFormat pix_fmt;
uint32_t tag;
unsigned bps;
} mov_pix_fmt_tags[] = {
{ AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
{ AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
{ AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
{ AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
{ AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
{ AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
{ AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
{ AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
{ AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
{ AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
{ AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
{ AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
{ AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
{ AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
};
static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
tag = mov_pix_fmt_tags[i].tag;
track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
break;
}
}
return tag;
}
static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
(track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
track->enc->codec_id == AV_CODEC_ID_H263 ||
av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
tag = mov_get_dv_codec_tag(s, track);
else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
tag = mov_get_rawvideo_codec_tag(s, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
if (tag)
av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
"the file may be unplayable!\n");
}
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->enc->codec_id);
if (!tag) { // if no mac fcc found, try with Microsoft tags
int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
if (ms_tag) {
tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
"the file may be unplayable!\n");
}
}
} else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
}
return tag;
}
static const AVCodecTag codec_3gp_tags[] = {
{ AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
{ AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
{ AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
{ AV_CODEC_ID_NONE, 0 },
};
static const AVCodecTag codec_f4v_tags[] = {
{ AV_CODEC_ID_MP3, MKTAG('.','m','p','3') },
{ AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
{ AV_CODEC_ID_VP6A, MKTAG('V','P','6','A') },
{ AV_CODEC_ID_VP6F, MKTAG('V','P','6','F') },
{ AV_CODEC_ID_NONE, 0 },
};
static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag;
if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
tag = mp4_get_codec_tag(s, track);
else if (track->mode == MODE_ISM) {
tag = mp4_get_codec_tag(s, track);
if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
tag = MKTAG('w', 'm', 'a', ' ');
} else if (track->mode == MODE_IPOD)
tag = ipod_get_codec_tag(s, track);
else if (track->mode & MODE_3GP)
tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
else if (track->mode == MODE_F4V)
tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
else
tag = mov_get_codec_tag(s, track);
return tag;
}
/** Write uuid atom.
* Needed to make file play in iPods running newest firmware
* goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
*/
static int mov_write_uuid_tag_ipod(AVIOContext *pb)
{
avio_wb32(pb, 28);
ffio_wfourcc(pb, "uuid");
avio_wb32(pb, 0x6b6840f2);
avio_wb32(pb, 0x5f244fc5);
avio_wb32(pb, 0xba39a51b);
avio_wb32(pb, 0xcf0323f3);
avio_wb32(pb, 0x0);
return 28;
}
static const uint16_t fiel_data[] = {
0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
};
static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
{
unsigned mov_field_order = 0;
if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
mov_field_order = fiel_data[track->enc->field_order];
else
return 0;
avio_wb32(pb, 10);
ffio_wfourcc(pb, "fiel");
avio_wb16(pb, mov_field_order);
return 10;
}
static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
avio_wl32(pb, track->tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
mov_write_esds_tag(pb, track);
else if (track->enc->extradata_size)
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return update_size(pb, pos);
}
static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
{
AVRational sar;
av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
track->enc->sample_aspect_ratio.den, INT_MAX);
avio_wb32(pb, 16);
ffio_wfourcc(pb, "pasp");
avio_wb32(pb, sar.num);
avio_wb32(pb, sar.den);
return 16;
}
static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
{
AVDictionaryEntry *encoder;
int64_t pos = avio_tell(pb);
char compressor_name[32] = { 0 };
avio_wb32(pb, 0); /* size */
avio_wl32(pb, track->tag); // store it byteswapped
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
avio_wb16(pb, 0); /* Codec stream version */
avio_wb16(pb, 0); /* Codec stream revision (=0) */
if (track->mode == MODE_MOV) {
ffio_wfourcc(pb, "FFMP"); /* Vendor */
if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
avio_wb32(pb, 0); /* Temporal Quality */
avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
} else {
avio_wb32(pb, 0x200); /* Temporal Quality = normal */
avio_wb32(pb, 0x200); /* Spatial Quality = normal */
}
} else {
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 0); /* Reserved */
}
avio_wb16(pb, track->enc->width); /* Video width */
avio_wb16(pb, track->height); /* Video height */
avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
avio_wb32(pb, 0); /* Data size (= 0) */
avio_wb16(pb, 1); /* Frame count (= 1) */
/* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
if (track->mode == MODE_MOV &&
(encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0)))
av_strlcpy(compressor_name, encoder->value, 32);
avio_w8(pb, strlen(compressor_name));
avio_write(pb, compressor_name, 31);
if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
avio_wb16(pb, track->enc->bits_per_coded_sample);
else
avio_wb16(pb, 0x18); /* Reserved */
avio_wb16(pb, 0xffff); /* Reserved */
if (track->tag == MKTAG('m','p','4','v'))
mov_write_esds_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_H263)
mov_write_d263_tag(pb);
else if (track->enc->codec_id == AV_CODEC_ID_SVQ3)
mov_write_svq3_tag(pb);
else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
mov_write_avid_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_HEVC)
mov_write_hvcc_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_H264) {
mov_write_avcc_tag(pb, track);
if (track->mode == MODE_IPOD)
mov_write_uuid_tag_ipod(pb);
} else if (track->enc->field_order != AV_FIELD_UNKNOWN)
mov_write_fiel_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
mov_write_dvc1_tag(pb, track);
else if (track->enc->codec_id == AV_CODEC_ID_VP6F ||
track->enc->codec_id == AV_CODEC_ID_VP6A) {
/* Don't write any potential extradata here - the cropping
* is signalled via the normal width/height fields. */
} else if (track->vos_len > 0)
mov_write_glbl_tag(pb, track);
if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
mov_write_pasp_tag(pb, track);
}
return update_size(pb, pos);
}
static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "rtp ");
avio_wb32(pb, 0); /* Reserved */
avio_wb16(pb, 0); /* Reserved */
avio_wb16(pb, 1); /* Data-reference index */
avio_wb16(pb, 1); /* Hint track version */
avio_wb16(pb, 1); /* Highest compatible version */
avio_wb32(pb, track->max_packet_size); /* Max packet size */
avio_wb32(pb, 12); /* size */
ffio_wfourcc(pb, "tims");
avio_wb32(pb, track->timescale);
return update_size(pb, pos);
}
static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tmcd"); /* Data format */
avio_wb32(pb, 0); /* Reserved */
avio_wb32(pb, 1); /* Data reference index */
if (track->enc->extradata_size)
avio_write(pb, track->enc->extradata, track->enc->extradata_size);
return update_size(pb, pos);
}
static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stsd");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, 1); /* entry count */
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
mov_write_video_tag(pb, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_audio_tag(pb, track);
else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
mov_write_subtitle_tag(pb, track);
else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
mov_write_rtp_tag(pb, track);
else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
mov_write_tmcd_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
{
MOVStts *ctts_entries;
uint32_t entries = 0;
uint32_t atom_size;
int i;
ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
ctts_entries[0].count = 1;
ctts_entries[0].duration = track->cluster[0].cts;
for (i = 1; i < track->entry; i++) {
if (track->cluster[i].cts == ctts_entries[entries].duration) {
ctts_entries[entries].count++; /* compress */
} else {
entries++;
ctts_entries[entries].duration = track->cluster[i].cts;
ctts_entries[entries].count = 1;
}
}
entries++; /* last one */
atom_size = 16 + (entries * 8);
avio_wb32(pb, atom_size); /* size */
ffio_wfourcc(pb, "ctts");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, entries); /* entry count */
for (i = 0; i < entries; i++) {
avio_wb32(pb, ctts_entries[i].count);
avio_wb32(pb, ctts_entries[i].duration);
}
av_free(ctts_entries);
return atom_size;
}
/* Time to sample atom */
static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
{
MOVStts *stts_entries;
uint32_t entries = -1;
uint32_t atom_size;
int i;
if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
stts_entries[0].count = track->sample_count;
stts_entries[0].duration = 1;
entries = 1;
} else {
stts_entries = track->entry ?
av_malloc(track->entry * sizeof(*stts_entries)) : /* worst case */
NULL;
for (i = 0; i < track->entry; i++) {
int duration = get_cluster_duration(track, i);
if (i && duration == stts_entries[entries].duration) {
stts_entries[entries].count++; /* compress */
} else {
entries++;
stts_entries[entries].duration = duration;
stts_entries[entries].count = 1;
}
}
entries++; /* last one */
}
atom_size = 16 + (entries * 8);
avio_wb32(pb, atom_size); /* size */
ffio_wfourcc(pb, "stts");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, entries); /* entry count */
for (i = 0; i < entries; i++) {
avio_wb32(pb, stts_entries[i].count);
avio_wb32(pb, stts_entries[i].duration);
}
av_free(stts_entries);
return atom_size;
}
static int mov_write_dref_tag(AVIOContext *pb)
{
avio_wb32(pb, 28); /* size */
ffio_wfourcc(pb, "dref");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, 1); /* entry count */
avio_wb32(pb, 0xc); /* size */
ffio_wfourcc(pb, "url ");
avio_wb32(pb, 1); /* version & flags */
return 28;
}
static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "stbl");
mov_write_stsd_tag(pb, track);
mov_write_stts_tag(pb, track);
if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
track->has_keyframes && track->has_keyframes < track->entry)
mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
track->flags & MOV_TRACK_CTTS)
mov_write_ctts_tag(pb, track);
mov_write_stsc_tag(pb, track);
mov_write_stsz_tag(pb, track);
mov_write_stco_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_dinf_tag(AVIOContext *pb)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "dinf");
mov_write_dref_tag(pb);
return update_size(pb, pos);
}
static int mov_write_nmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 12);
ffio_wfourcc(pb, "nmhd");
avio_wb32(pb, 0);
return 12;
}
static int mov_write_gmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x20); /* size */
ffio_wfourcc(pb, "gmhd");
avio_wb32(pb, 0x18); /* gmin size */
ffio_wfourcc(pb, "gmin");/* generic media info */
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0x40); /* graphics mode = */
avio_wb16(pb, 0x8000); /* opColor (r?) */
avio_wb16(pb, 0x8000); /* opColor (g?) */
avio_wb16(pb, 0x8000); /* opColor (b?) */
avio_wb16(pb, 0); /* balance */
avio_wb16(pb, 0); /* reserved */
return 0x20;
}
static int mov_write_smhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 16); /* size */
ffio_wfourcc(pb, "smhd");
avio_wb32(pb, 0); /* version & flags */
avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
avio_wb16(pb, 0); /* reserved */
return 16;
}
static int mov_write_vmhd_tag(AVIOContext *pb)
{
avio_wb32(pb, 0x14); /* size (always 0x14) */
ffio_wfourcc(pb, "vmhd");
avio_wb32(pb, 0x01); /* version & flags */
avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
return 0x14;
}
static int is_clcp_track(MOVTrack *track)
{
return track->tag == MKTAG('c','7','0','8') ||
track->tag == MKTAG('c','6','0','8');
}
static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
{
const char *hdlr, *descr = NULL, *hdlr_type = NULL;
int64_t pos = avio_tell(pb);
hdlr = "dhlr";
hdlr_type = "url ";
descr = "DataHandler";
if (track) {
hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
hdlr_type = "vide";
descr = "VideoHandler";
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
hdlr_type = "soun";
descr = "SoundHandler";
} else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (track->tag == MKTAG('t','x','3','g')) {
hdlr_type = "sbtl";
} else if (track->tag == MKTAG('m','p','4','s')) {
hdlr_type = "subp";
} else if (is_clcp_track(track)) {
hdlr_type = "clcp";
} else {
hdlr_type = "text";
}
descr = "SubtitleHandler";
} else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
hdlr_type = "hint";
descr = "HintHandler";
} else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
hdlr_type = "tmcd";
descr = "TimeCodeHandler";
} else {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
track->enc->codec_tag);
av_log(track->enc, AV_LOG_WARNING,
"Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
tag_buf, track->enc->codec_tag);
}
if (track->st) {
// hdlr.name is used by some players to identify the content title
// of the track. So if an alternate handler description is
// specified, use it.
AVDictionaryEntry *t;
t = av_dict_get(track->st->metadata, "handler", NULL, 0);
if (t && utf8len(t->value))
descr = t->value;
}
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "hdlr");
avio_wb32(pb, 0); /* Version & flags */
avio_write(pb, hdlr, 4); /* handler */
ffio_wfourcc(pb, hdlr_type); /* handler type */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
if (!track || track->mode == MODE_MOV)
avio_w8(pb, strlen(descr)); /* pascal string */
avio_write(pb, descr, strlen(descr)); /* handler description */
if (track && track->mode != MODE_MOV)
avio_w8(pb, 0); /* c string */
return update_size(pb, pos);
}
static int mov_write_hmhd_tag(AVIOContext *pb)
{
/* This atom must be present, but leaving the values at zero
* seems harmless. */
avio_wb32(pb, 28); /* size */
ffio_wfourcc(pb, "hmhd");
avio_wb32(pb, 0); /* version, flags */
avio_wb16(pb, 0); /* maxPDUsize */
avio_wb16(pb, 0); /* avgPDUsize */
avio_wb32(pb, 0); /* maxbitrate */
avio_wb32(pb, 0); /* avgbitrate */
avio_wb32(pb, 0); /* reserved */
return 28;
}
static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "minf");
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
mov_write_vmhd_tag(pb);
else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
mov_write_smhd_tag(pb);
else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
mov_write_gmhd_tag(pb);
} else {
mov_write_nmhd_tag(pb);
}
} else if (track->tag == MKTAG('r','t','p',' ')) {
mov_write_hmhd_tag(pb);
} else if (track->tag == MKTAG('t','m','c','d')) {
mov_write_gmhd_tag(pb);
}
if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
mov_write_hdlr_tag(pb, NULL);
mov_write_dinf_tag(pb);
mov_write_stbl_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int version = track->track_duration < INT32_MAX ? 0 : 1;
if (track->mode == MODE_ISM)
version = 1;
(version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
ffio_wfourcc(pb, "mdhd");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
if (version == 1) {
avio_wb64(pb, track->time);
avio_wb64(pb, track->time);
} else {
avio_wb32(pb, track->time); /* creation time */
avio_wb32(pb, track->time); /* modification time */
}
avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
if (!track->entry && mov->mode == MODE_ISM)
(version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
else if (!track->entry)
(version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
else
(version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
avio_wb16(pb, track->language); /* language */
avio_wb16(pb, 0); /* reserved (quality) */
if (version != 0 && track->mode == MODE_MOV) {
av_log(NULL, AV_LOG_ERROR,
"FATAL error, file duration too long for timebase, this file will not be\n"
"playable with quicktime. Choose a different timebase or a different\n"
"container format\n");
}
return 32;
}
static int mov_write_mdia_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "mdia");
mov_write_mdhd_tag(pb, mov, track);
mov_write_hdlr_tag(pb, track);
mov_write_minf_tag(pb, track);
return update_size(pb, pos);
}
static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, AVStream *st)
{
int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
int flags = MOV_TKHD_FLAG_IN_MOVIE;
int group = 0;
if (st) {
if (mov->per_stream_grouping)
group = st->index;
else
group = st->codec->codec_type;
}
if (track->flags & MOV_TRACK_ENABLED)
flags |= MOV_TKHD_FLAG_ENABLED;
if (track->mode == MODE_ISM)
version = 1;
(version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
ffio_wfourcc(pb, "tkhd");
avio_w8(pb, version);
avio_wb24(pb, flags);
if (version == 1) {
avio_wb64(pb, track->time);
avio_wb64(pb, track->time);
} else {
avio_wb32(pb, track->time); /* creation time */
avio_wb32(pb, track->time); /* modification time */
}
avio_wb32(pb, track->track_id); /* track-id */
avio_wb32(pb, 0); /* reserved */
if (!track->entry && mov->mode == MODE_ISM)
(version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
else if (!track->entry)
(version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
else
(version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb16(pb, 0); /* layer */
avio_wb16(pb, group); /* alternate group) */
/* Volume, only for audio */
if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_wb16(pb, 0x0100);
else
avio_wb16(pb, 0);
avio_wb16(pb, 0); /* reserved */
/* Matrix structure */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x40000000); /* reserved */
/* Track width and height, for visual only */
if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
if (track->mode == MODE_MOV) {
avio_wb32(pb, track->enc->width << 16);
avio_wb32(pb, track->height << 16);
} else {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if (!sample_aspect_ratio || track->height != track->enc->height)
sample_aspect_ratio = 1;
avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
avio_wb32(pb, track->height * 0x10000);
}
} else {
avio_wb32(pb, 0);
avio_wb32(pb, 0);
}
return 0x5c;
}
static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
{
int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
track->enc->sample_aspect_ratio.den);
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tapt");
avio_wb32(pb, 20);
ffio_wfourcc(pb, "clef");
avio_wb32(pb, 0);
avio_wb32(pb, width << 16);
avio_wb32(pb, track->enc->height << 16);
avio_wb32(pb, 20);
ffio_wfourcc(pb, "prof");
avio_wb32(pb, 0);
avio_wb32(pb, width << 16);
avio_wb32(pb, track->enc->height << 16);
avio_wb32(pb, 20);
ffio_wfourcc(pb, "enof");
avio_wb32(pb, 0);
avio_wb32(pb, track->enc->width << 16);
avio_wb32(pb, track->enc->height << 16);
return update_size(pb, pos);
}
// This box seems important for the psp playback ... without it the movie seems to hang
static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
track->timescale, AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
int entry_size, entry_count, size;
int64_t delay, start_ct = track->cluster[0].cts;
delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
track->timescale, AV_ROUND_DOWN);
version |= delay < INT32_MAX ? 0 : 1;
entry_size = (version == 1) ? 20 : 12;
entry_count = 1 + (delay > 0);
size = 24 + entry_count * entry_size;
/* write the atom data */
avio_wb32(pb, size);
ffio_wfourcc(pb, "edts");
avio_wb32(pb, size - 8);
ffio_wfourcc(pb, "elst");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
avio_wb32(pb, entry_count);
if (delay > 0) { /* add an empty edit to delay presentation */
/* In the positive delay case, the delay includes the cts
* offset, and the second edit list entry below trims out
* the same amount from the actual content. This makes sure
* that the offsetted last sample is included in the edit
* list duration as well. */
if (version == 1) {
avio_wb64(pb, delay);
avio_wb64(pb, -1);
} else {
avio_wb32(pb, delay);
avio_wb32(pb, -1);
}
avio_wb32(pb, 0x00010000);
} else {
/* Avoid accidentally ending up with start_ct = -1 which has got a
* special meaning. Normally start_ct should end up positive or zero
* here, but use FFMIN in case dts is a a small positive integer
* rounded to 0 when represented in MOV_TIMESCALE units. */
start_ct = -FFMIN(track->cluster[0].dts, 0);
/* Note, this delay is calculated from the pts of the first sample,
* ensuring that we don't reduce the duration for cases with
* dts<0 pts=0. */
duration += delay;
}
/* For fragmented files, we don't know the full length yet. Setting
* duration to 0 allows us to only specify the offset, including
* the rest of the content (from all future fragments) without specifying
* an explicit duration. */
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
duration = 0;
/* duration */
if (version == 1) {
avio_wb64(pb, duration);
avio_wb64(pb, start_ct);
} else {
avio_wb32(pb, duration);
avio_wb32(pb, start_ct);
}
avio_wb32(pb, 0x00010000);
return size;
}
static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 20); // size
ffio_wfourcc(pb, "tref");
avio_wb32(pb, 12); // size (subatom)
avio_wl32(pb, track->tref_tag);
avio_wb32(pb, track->tref_id);
return 20;
}
// goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
{
avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "USMT");
avio_wb32(pb, 0x21d24fce);
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
avio_wb32(pb, 0x1c); // another size here!
ffio_wfourcc(pb, "MTDT");
avio_wb32(pb, 0x00010012);
avio_wb32(pb, 0x0a);
avio_wb32(pb, 0x55c40000);
avio_wb32(pb, 0x1);
avio_wb32(pb, 0x0);
return 0x34;
}
static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
{
AVFormatContext *ctx = track->rtp_ctx;
char buf[1000] = "";
int len;
ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
NULL, NULL, 0, 0, ctx);
av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
len = strlen(buf);
avio_wb32(pb, len + 24);
ffio_wfourcc(pb, "udta");
avio_wb32(pb, len + 16);
ffio_wfourcc(pb, "hnti");
avio_wb32(pb, len + 8);
ffio_wfourcc(pb, "sdp ");
avio_write(pb, buf, len);
return len + 24;
}
static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,
const char *tag, const char *str)
{
int64_t pos = avio_tell(pb);
AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
if (!t || !utf8len(t->value))
return 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, tag); /* type */
avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
return update_size(pb, pos);
}
static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVStream *st)
{
AVIOContext *pb_buf;
int ret, size;
uint8_t *buf;
if (!st || mov->fc->flags & AVFMT_FLAG_BITEXACT)
return 0;
ret = avio_open_dyn_buf(&pb_buf);
if (ret < 0)
return ret;
if (mov->mode & MODE_MP4)
mov_write_track_metadata(pb_buf, st, "name", "title");
if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
avio_wb32(pb, size + 8);
ffio_wfourcc(pb, "udta");
avio_write(pb, buf, size);
}
av_free(buf);
return 0;
}
static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, AVStream *st)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "trak");
mov_write_tkhd_tag(pb, mov, track, st);
if (track->entry &&
(track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS ||
track->cluster[0].dts || is_clcp_track(track))) {
if (mov->use_editlist)
mov_write_edts_tag(pb, mov, track); // PSP Movies require edts box
else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
av_log(mov->fc, AV_LOG_WARNING,
"Not writing any edit list even though one would have been required\n");
}
if (track->tref_tag)
mov_write_tref_tag(pb, track);
mov_write_mdia_tag(pb, mov, track);
if (track->mode == MODE_PSP)
mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
if (track->tag == MKTAG('r','t','p',' '))
mov_write_udta_sdp(pb, track);
if (track->mode == MODE_MOV) {
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
if ((0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)) {
mov_write_tapt_tag(pb, track);
}
}
if (is_clcp_track(track)) {
mov_write_tapt_tag(pb, track);
}
}
mov_write_track_udta_tag(pb, mov, st);
return update_size(pb, pos);
}
static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int i, has_audio = 0, has_video = 0;
int64_t pos = avio_tell(pb);
int audio_profile = mov->iods_audio_profile;
int video_profile = mov->iods_video_profile;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
}
}
if (audio_profile < 0)
audio_profile = 0xFF - has_audio;
if (video_profile < 0)
video_profile = 0xFF - has_video;
avio_wb32(pb, 0x0); /* size */
ffio_wfourcc(pb, "iods");
avio_wb32(pb, 0); /* version & flags */
put_descr(pb, 0x10, 7);
avio_wb16(pb, 0x004f);
avio_w8(pb, 0xff);
avio_w8(pb, 0xff);
avio_w8(pb, audio_profile);
avio_w8(pb, video_profile);
avio_w8(pb, 0xff);
return update_size(pb, pos);
}
static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
{
avio_wb32(pb, 0x20); /* size */
ffio_wfourcc(pb, "trex");
avio_wb32(pb, 0); /* version & flags */
avio_wb32(pb, track->track_id); /* track ID */
avio_wb32(pb, 1); /* default sample description index */
avio_wb32(pb, 0); /* default sample duration */
avio_wb32(pb, 0); /* default sample size */
avio_wb32(pb, 0); /* default sample flags */
return 0;
}
static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0x0); /* size */
ffio_wfourcc(pb, "mvex");
for (i = 0; i < mov->nb_streams; i++)
mov_write_trex_tag(pb, &mov->tracks[i]);
return update_size(pb, pos);
}
static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int max_track_id = 1, i;
int64_t max_track_len_temp, max_track_len = 0;
int version;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
MOV_TIMESCALE,
mov->tracks[i].timescale,
AV_ROUND_UP);
if (max_track_len < max_track_len_temp)
max_track_len = max_track_len_temp;
if (max_track_id < mov->tracks[i].track_id)
max_track_id = mov->tracks[i].track_id;
}
}
version = max_track_len < UINT32_MAX ? 0 : 1;
(version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
ffio_wfourcc(pb, "mvhd");
avio_w8(pb, version);
avio_wb24(pb, 0); /* flags */
if (version == 1) {
avio_wb64(pb, mov->time);
avio_wb64(pb, mov->time);
} else {
avio_wb32(pb, mov->time); /* creation time */
avio_wb32(pb, mov->time); /* modification time */
}
avio_wb32(pb, MOV_TIMESCALE);
(version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
avio_wb16(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
/* Matrix structure */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x00010000); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x0); /* reserved */
avio_wb32(pb, 0x40000000); /* reserved */
avio_wb32(pb, 0); /* reserved (preview time) */
avio_wb32(pb, 0); /* reserved (preview duration) */
avio_wb32(pb, 0); /* reserved (poster time) */
avio_wb32(pb, 0); /* reserved (selection time) */
avio_wb32(pb, 0); /* reserved (selection duration) */
avio_wb32(pb, 0); /* reserved (current time) */
avio_wb32(pb, max_track_id + 1); /* Next track id */
return 0x6c;
}
static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
avio_wb32(pb, 33); /* size */
ffio_wfourcc(pb, "hdlr");
avio_wb32(pb, 0);
avio_wb32(pb, 0);
ffio_wfourcc(pb, "mdir");
ffio_wfourcc(pb, "appl");
avio_wb32(pb, 0);
avio_wb32(pb, 0);
avio_w8(pb, 0);
return 33;
}
/* helper function to write a data tag with the specified string as data */
static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
{
if (long_style) {
int size = 16 + strlen(data);
avio_wb32(pb, size); /* size */
ffio_wfourcc(pb, "data");
avio_wb32(pb, 1);
avio_wb32(pb, 0);
avio_write(pb, data, strlen(data));
return size;
} else {
if (!lang)
lang = ff_mov_iso639_to_lang("und", 1);
avio_wb16(pb, strlen(data)); /* string length */
avio_wb16(pb, lang);
avio_write(pb, data, strlen(data));
return strlen(data) + 4;
}
}
static int mov_write_string_tag(AVIOContext *pb, const char *name,
const char *value, int lang, int long_style)
{
int size = 0;
if (value && value[0]) {
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, name);
mov_write_string_data_tag(pb, value, lang, long_style);
size = update_size(pb, pos);
}
return size;
}
static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
const char *name, const char *tag,
int long_style)
{
int l, lang = 0, len, len2;
AVDictionaryEntry *t, *t2 = NULL;
char tag2[16];
if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
return 0;
len = strlen(t->key);
snprintf(tag2, sizeof(tag2), "%s-", tag);
while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
len2 = strlen(t2->key);
if (len2 == len + 4 && !strcmp(t->value, t2->value)
&& (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
lang = l;
break;
}
}
return mov_write_string_tag(pb, name, t->value, lang, long_style);
}
/* iTunes track number */
static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
int size = 0, track = t ? atoi(t->value) : 0;
if (track) {
avio_wb32(pb, 32); /* size */
ffio_wfourcc(pb, "trkn");
avio_wb32(pb, 24); /* size */
ffio_wfourcc(pb, "data");
avio_wb32(pb, 0); // 8 bytes empty
avio_wb32(pb, 0);
avio_wb16(pb, 0); // empty
avio_wb16(pb, track); // track number
avio_wb16(pb, 0); // total track number
avio_wb16(pb, 0); // empty
size = 32;
}
return size;
}
/* iTunes meta data list */
static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "ilst");
mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
mov_write_string_metadata(s, pb, "\251day", "date" , 1);
if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
mov_write_string_metadata(s, pb, "desc", "description",1);
mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
mov_write_string_metadata(s, pb, "tven", "episode_id",1);
mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
mov_write_trkn_tag(pb, mov, s);
return update_size(pb, pos);
}
/* iTunes meta data tag */
static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int size = 0;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "meta");
avio_wb32(pb, 0);
mov_write_itunes_hdlr_tag(pb, mov, s);
mov_write_ilst_tag(pb, mov, s);
size = update_size(pb, pos);
return size;
}
static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
{
int val;
while (*b) {
GET_UTF8(val, *b++, return -1;)
avio_wb16(pb, val);
}
avio_wb16(pb, 0x00);
return 0;
}
static uint16_t language_code(const char *str)
{
return (((str[0] - 0x60) & 0x1F) << 10) +
(((str[1] - 0x60) & 0x1F) << 5) +
(( str[2] - 0x60) & 0x1F);
}
static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
const char *tag, const char *str)
{
int64_t pos = avio_tell(pb);
AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
if (!t || !utf8len(t->value))
return 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, tag); /* type */
avio_wb32(pb, 0); /* version + flags */
if (!strcmp(tag, "yrrc"))
avio_wb16(pb, atoi(t->value));
else {
avio_wb16(pb, language_code("eng")); /* language */
avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
if (!strcmp(tag, "albm") &&
(t = av_dict_get(s->metadata, "track", NULL, 0)))
avio_w8(pb, atoi(t->value));
}
return update_size(pb, pos);
}
static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
{
int64_t pos = avio_tell(pb);
int i, nb_chapters = FFMIN(s->nb_chapters, 255);
avio_wb32(pb, 0); // size
ffio_wfourcc(pb, "chpl");
avio_wb32(pb, 0x01000000); // version + flags
avio_wb32(pb, 0); // unknown
avio_w8(pb, nb_chapters);
for (i = 0; i < nb_chapters; i++) {
AVChapter *c = s->chapters[i];
AVDictionaryEntry *t;
avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
int len = FFMIN(strlen(t->value), 255);
avio_w8(pb, len);
avio_write(pb, t->value, len);
} else
avio_w8(pb, 0);
}
return update_size(pb, pos);
}
static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
AVIOContext *pb_buf;
int ret, size;
uint8_t *buf;
if (s->flags & AVFMT_FLAG_BITEXACT)
return 0;
ret = avio_open_dyn_buf(&pb_buf);
if (ret < 0)
return ret;
if (mov->mode & MODE_3GP) {
mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
} else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
} else {
/* iTunes meta data */
mov_write_meta_tag(pb_buf, mov, s);
}
if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
mov_write_chpl_tag(pb_buf, s);
if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
avio_wb32(pb, size + 8);
ffio_wfourcc(pb, "udta");
avio_write(pb, buf, size);
}
av_free(buf);
return 0;
}
static void mov_write_psp_udta_tag(AVIOContext *pb,
const char *str, const char *lang, int type)
{
int len = utf8len(str) + 1;
if (len <= 0)
return;
avio_wb16(pb, len * 2 + 10); /* size */
avio_wb32(pb, type); /* type */
avio_wb16(pb, language_code(lang)); /* language */
avio_wb16(pb, 0x01); /* ? */
ascii_to_wc(pb, str);
}
static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
{
AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
int64_t pos, pos2;
if (title) {
pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "USMT");
avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
pos2 = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "MTDT");
avio_wb16(pb, 4);
// ?
avio_wb16(pb, 0x0C); /* size */
avio_wb32(pb, 0x0B); /* type */
avio_wb16(pb, language_code("und")); /* language */
avio_wb16(pb, 0x0); /* ? */
avio_wb16(pb, 0x021C); /* data */
mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
update_size(pb, pos2);
return update_size(pb, pos);
}
return 0;
}
static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
AVFormatContext *s)
{
int i;
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "moov");
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
continue;
mov->tracks[i].time = mov->time;
mov->tracks[i].track_id = i + 1;
}
if (mov->chapter_track)
for (i = 0; i < s->nb_streams; i++) {
mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
mov->tracks[i].tref_id =
mov->tracks[mov->tracks[i].src_track].track_id;
}
}
mov_write_mvhd_tag(pb, mov);
if (mov->mode != MODE_MOV && !mov->iods_skip)
mov_write_iods_tag(pb, mov);
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
}
}
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
if (mov->mode == MODE_PSP)
mov_write_uuidusmt_tag(pb, s);
else
mov_write_udta_tag(pb, mov, s);
return update_size(pb, pos);
}
static void param_write_int(AVIOContext *pb, const char *name, int value)
{
avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
}
static void param_write_string(AVIOContext *pb, const char *name, const char *value)
{
avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
}
static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
{
char buf[150];
len = FFMIN(sizeof(buf) / 2 - 1, len);
ff_data_to_hex(buf, value, len, 0);
buf[2 * len] = '\0';
avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
}
static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
const uint8_t uuid[] = {
0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
};
avio_wb32(pb, 0);
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_wb32(pb, 0);
avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
avio_printf(pb, "<head>\n");
avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
LIBAVFORMAT_IDENT);
avio_printf(pb, "</head>\n");
avio_printf(pb, "<body>\n");
avio_printf(pb, "<switch>\n");
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
const char *type;
/* track->track_id is initialized in write_moov, and thus isn't known
* here yet */
int track_id = i + 1;
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
type = "video";
} else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
type = "audio";
} else {
continue;
}
avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
track->enc->bit_rate);
param_write_int(pb, "systemBitrate", track->enc->bit_rate);
param_write_int(pb, "trackID", track_id);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
if (track->enc->codec_id == AV_CODEC_ID_H264) {
uint8_t *ptr;
int size = track->enc->extradata_size;
if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
&size)) {
param_write_hex(pb, "CodecPrivateData",
ptr ? ptr : track->enc->extradata,
size);
av_free(ptr);
}
param_write_string(pb, "FourCC", "H264");
} else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
param_write_string(pb, "FourCC", "WVC1");
param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
track->enc->extradata_size);
}
param_write_int(pb, "MaxWidth", track->enc->width);
param_write_int(pb, "MaxHeight", track->enc->height);
param_write_int(pb, "DisplayWidth", track->enc->width);
param_write_int(pb, "DisplayHeight", track->enc->height);
} else {
if (track->enc->codec_id == AV_CODEC_ID_AAC) {
param_write_string(pb, "FourCC", "AACL");
} else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
param_write_string(pb, "FourCC", "WMAP");
}
param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
track->enc->extradata_size);
param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
track->enc->codec_id));
param_write_int(pb, "Channels", track->enc->channels);
param_write_int(pb, "SamplingRate", track->enc->sample_rate);
param_write_int(pb, "BitsPerSample", 16);
param_write_int(pb, "PacketSize", track->enc->block_align ?
track->enc->block_align : 4);
}
avio_printf(pb, "</%s>\n", type);
}
avio_printf(pb, "</switch>\n");
avio_printf(pb, "</body>\n");
avio_printf(pb, "</smil>\n");
return update_size(pb, pos);
}
static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)
{
avio_wb32(pb, 16);
ffio_wfourcc(pb, "mfhd");
avio_wb32(pb, 0);
avio_wb32(pb, mov->fragments);
return 0;
}
static int mov_write_tfhd_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int64_t moof_offset)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
MOV_TFHD_BASE_DATA_OFFSET;
if (!track->entry) {
flags |= MOV_TFHD_DURATION_IS_EMPTY;
} else {
flags |= MOV_TFHD_DEFAULT_FLAGS;
}
if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET)
flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
flags |= MOV_TFHD_DEFAULT_BASE_IS_MOOF;
}
/* Don't set a default sample size, the silverlight player refuses
* to play files with that set. Don't set a default sample duration,
* WMP freaks out if it is set. Don't set a base data offset, PIFF
* file format says it MUST NOT be set. */
if (track->mode == MODE_ISM)
flags &= ~(MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
MOV_TFHD_BASE_DATA_OFFSET);
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "tfhd");
avio_w8(pb, 0); /* version */
avio_wb24(pb, flags);
avio_wb32(pb, track->track_id); /* track-id */
if (flags & MOV_TFHD_BASE_DATA_OFFSET)
avio_wb64(pb, moof_offset);
if (flags & MOV_TFHD_DEFAULT_DURATION) {
track->default_duration = get_cluster_duration(track, 0);
avio_wb32(pb, track->default_duration);
}
if (flags & MOV_TFHD_DEFAULT_SIZE) {
track->default_size = track->entry ? track->cluster[0].size : 1;
avio_wb32(pb, track->default_size);
} else
track->default_size = -1;
if (flags & MOV_TFHD_DEFAULT_FLAGS) {
track->default_sample_flags =
track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
(MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC) :
MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO;
avio_wb32(pb, track->default_sample_flags);
}
return update_size(pb, pos);
}
static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
{
return entry->flags & MOV_SYNC_SAMPLE ? MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO :
(MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC);
}
static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int moof_size)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TRUN_DATA_OFFSET;
int i;
for (i = 0; i < track->entry; i++) {
if (get_cluster_duration(track, i) != track->default_duration)
flags |= MOV_TRUN_SAMPLE_DURATION;
if (track->cluster[i].size != track->default_size)
flags |= MOV_TRUN_SAMPLE_SIZE;
if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
flags |= MOV_TRUN_SAMPLE_FLAGS;
}
if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
if (track->flags & MOV_TRACK_CTTS)
flags |= MOV_TRUN_SAMPLE_CTS;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "trun");
avio_w8(pb, 0); /* version */
avio_wb24(pb, flags);
avio_wb32(pb, track->entry); /* sample count */
if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) &&
!mov->first_trun)
avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
else
avio_wb32(pb, moof_size + 8 + track->data_offset +
track->cluster[0].pos); /* data offset */
if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
for (i = 0; i < track->entry; i++) {
if (flags & MOV_TRUN_SAMPLE_DURATION)
avio_wb32(pb, get_cluster_duration(track, i));
if (flags & MOV_TRUN_SAMPLE_SIZE)
avio_wb32(pb, track->cluster[i].size);
if (flags & MOV_TRUN_SAMPLE_FLAGS)
avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
if (flags & MOV_TRUN_SAMPLE_CTS)
avio_wb32(pb, track->cluster[i].cts);
}
mov->first_trun = 0;
return update_size(pb, pos);
}
static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
const uint8_t uuid[] = {
0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
};
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_w8(pb, 1);
avio_wb24(pb, 0);
avio_wb64(pb, track->frag_start);
avio_wb64(pb, track->start_dts + track->track_duration -
track->cluster[0].dts);
return update_size(pb, pos);
}
static int mov_write_tfrf_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int entry)
{
int n = track->nb_frag_info - 1 - entry, i;
int size = 8 + 16 + 4 + 1 + 16*n;
const uint8_t uuid[] = {
0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
};
if (entry < 0)
return 0;
avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
avio_wb32(pb, size);
ffio_wfourcc(pb, "uuid");
avio_write(pb, uuid, sizeof(uuid));
avio_w8(pb, 1);
avio_wb24(pb, 0);
avio_w8(pb, n);
for (i = 0; i < n; i++) {
int index = entry + 1 + i;
avio_wb64(pb, track->frag_info[index].time);
avio_wb64(pb, track->frag_info[index].duration);
}
if (n < mov->ism_lookahead) {
int free_size = 16 * (mov->ism_lookahead - n);
avio_wb32(pb, free_size);
ffio_wfourcc(pb, "free");
for (i = 0; i < free_size - 8; i++)
avio_w8(pb, 0);
}
return 0;
}
static int mov_write_tfrf_tags(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int i;
for (i = 0; i < mov->ism_lookahead; i++) {
/* Update the tfrf tag for the last ism_lookahead fragments,
* nb_frag_info - 1 is the next fragment to be written. */
mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
}
avio_seek(pb, pos, SEEK_SET);
return 0;
}
static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
int size)
{
int i;
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
MOVFragmentInfo *info;
if ((tracks >= 0 && i != tracks) || !track->entry)
continue;
track->nb_frag_info++;
if (track->nb_frag_info >= track->frag_info_capacity) {
unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
if (av_reallocp_array(&track->frag_info,
new_capacity,
sizeof(*track->frag_info)))
return AVERROR(ENOMEM);
track->frag_info_capacity = new_capacity;
}
info = &track->frag_info[track->nb_frag_info - 1];
info->offset = avio_tell(pb);
info->size = size;
// Try to recreate the original pts for the first packet
// from the fields we have stored
info->time = track->start_dts + track->frag_start +
track->cluster[0].cts;
// If the pts is less than zero, we will have trimmed
// away parts of the media track using an edit list,
// and the corresponding start presentation time is zero.
if (info->time < 0)
info->time = 0;
info->duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
info->tfrf_offset = 0;
mov_write_tfrf_tags(pb, mov, track);
}
return 0;
}
static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "tfdt");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb64(pb, track->frag_start);
return update_size(pb, pos);
}
static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, int64_t moof_offset,
int moof_size)
{
int64_t pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "traf");
mov_write_tfhd_tag(pb, mov, track, moof_offset);
if (mov->mode != MODE_ISM)
mov_write_tfdt_tag(pb, track);
mov_write_trun_tag(pb, mov, track, moof_size);
if (mov->mode == MODE_ISM) {
mov_write_tfxd_tag(pb, track);
if (mov->ism_lookahead) {
int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
if (track->nb_frag_info > 0) {
MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
if (!info->tfrf_offset)
info->tfrf_offset = avio_tell(pb);
}
avio_wb32(pb, 8 + size);
ffio_wfourcc(pb, "free");
for (i = 0; i < size; i++)
avio_w8(pb, 0);
}
}
return update_size(pb, pos);
}
static int mov_write_moof_tag_internal(AVIOContext *pb, MOVMuxContext *mov,
int tracks, int moof_size)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "moof");
mov->first_trun = 1;
mov_write_mfhd_tag(pb, mov);
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (tracks >= 0 && i != tracks)
continue;
if (!track->entry)
continue;
mov_write_traf_tag(pb, mov, track, pos, moof_size);
}
return update_size(pb, pos);
}
static int mov_write_sidx_tag(AVIOContext *pb,
MOVTrack *track, int ref_size, int total_sidx_size)
{
int64_t pos = avio_tell(pb), offset_pos, end_pos;
int64_t presentation_time, duration, offset;
int starts_with_SAP, i, entries;
if (track->entry) {
entries = 1;
presentation_time = track->start_dts + track->frag_start +
track->cluster[0].cts;
duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
} else {
entries = track->nb_frag_info;
presentation_time = track->frag_info[0].time;
}
// pts<0 should be cut away using edts
if (presentation_time < 0)
presentation_time = 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "sidx");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb32(pb, track->track_id); /* reference_ID */
avio_wb32(pb, track->timescale); /* timescale */
avio_wb64(pb, presentation_time); /* earliest_presentation_time */
offset_pos = avio_tell(pb);
avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
avio_wb16(pb, 0); /* reserved */
avio_wb16(pb, entries); /* reference_count */
for (i = 0; i < entries; i++) {
if (!track->entry) {
if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
}
duration = track->frag_info[i].duration;
ref_size = track->frag_info[i].size;
starts_with_SAP = 1;
}
avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
avio_wb32(pb, duration); /* subsegment_duration */
avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
}
end_pos = avio_tell(pb);
offset = pos + total_sidx_size - end_pos;
avio_seek(pb, offset_pos, SEEK_SET);
avio_wb64(pb, offset);
avio_seek(pb, end_pos, SEEK_SET);
return update_size(pb, pos);
}
static int mov_write_sidx_tags(AVIOContext *pb, MOVMuxContext *mov,
int tracks, int ref_size)
{
int i, round, ret;
AVIOContext *avio_buf;
int total_size = 0;
for (round = 0; round < 2; round++) {
// First run one round to calculate the total size of all
// sidx atoms.
// This would be much simpler if we'd only write one sidx
// atom, for the first track in the moof.
if (round == 0) {
if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
return ret;
} else {
avio_buf = pb;
}
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (tracks >= 0 && i != tracks)
continue;
// When writing a sidx for the full file, entry is 0, but
// we want to include all tracks. ref_size is 0 in this case,
// since we read it from frag_info instead.
if (!track->entry && ref_size > 0)
continue;
total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
total_size);
}
if (round == 0)
total_size = ffio_close_null_buf(avio_buf);
}
return 0;
}
static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
int64_t mdat_size)
{
AVIOContext *avio_buf;
int ret, moof_size;
if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
return ret;
mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
moof_size = ffio_close_null_buf(avio_buf);
if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_FASTSTART))
mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
return ret;
return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
}
static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "tfra");
avio_w8(pb, 1); /* version */
avio_wb24(pb, 0);
avio_wb32(pb, track->track_id);
avio_wb32(pb, 0); /* length of traf/trun/sample num */
avio_wb32(pb, track->nb_frag_info);
for (i = 0; i < track->nb_frag_info; i++) {
avio_wb64(pb, track->frag_info[i].time);
avio_wb64(pb, track->frag_info[i].offset + track->data_offset);
avio_w8(pb, 1); /* traf number */
avio_w8(pb, 1); /* trun number */
avio_w8(pb, 1); /* sample number */
}
return update_size(pb, pos);
}
static int mov_write_mfra_tag(AVIOContext *pb, MOVMuxContext *mov)
{
int64_t pos = avio_tell(pb);
int i;
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "mfra");
/* An empty mfra atom is enough to indicate to the publishing point that
* the stream has ended. */
if (mov->flags & FF_MOV_FLAG_ISML)
return update_size(pb, pos);
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (track->nb_frag_info)
mov_write_tfra_tag(pb, track);
}
avio_wb32(pb, 16);
ffio_wfourcc(pb, "mfro");
avio_wb32(pb, 0); /* version + flags */
avio_wb32(pb, avio_tell(pb) + 4 - pos);
return update_size(pb, pos);
}
static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
{
avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
mov->mdat_pos = avio_tell(pb);
avio_wb32(pb, 0); /* size placeholder*/
ffio_wfourcc(pb, "mdat");
return 0;
}
/* TODO: This needs to be more general */
static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int64_t pos = avio_tell(pb);
int has_h264 = 0, has_video = 0;
int minor = 0x200;
int i;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
has_video = 1;
if (st->codec->codec_id == AV_CODEC_ID_H264)
has_h264 = 1;
}
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "ftyp");
if (mov->major_brand && strlen(mov->major_brand) >= 4)
ffio_wfourcc(pb, mov->major_brand);
else if (mov->mode == MODE_3GP) {
ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
minor = has_h264 ? 0x100 : 0x200;
} else if (mov->mode & MODE_3G2) {
ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
minor = has_h264 ? 0x20000 : 0x10000;
} else if (mov->mode == MODE_PSP)
ffio_wfourcc(pb, "MSNV");
else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof
else if (mov->mode == MODE_MP4)
ffio_wfourcc(pb, "isom");
else if (mov->mode == MODE_IPOD)
ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
else if (mov->mode == MODE_ISM)
ffio_wfourcc(pb, "isml");
else if (mov->mode == MODE_F4V)
ffio_wfourcc(pb, "f4v ");
else
ffio_wfourcc(pb, "qt ");
avio_wb32(pb, minor);
if (mov->mode == MODE_MOV)
ffio_wfourcc(pb, "qt ");
else if (mov->mode == MODE_ISM) {
ffio_wfourcc(pb, "piff");
} else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
ffio_wfourcc(pb, "isom");
ffio_wfourcc(pb, "iso2");
if (has_h264)
ffio_wfourcc(pb, "avc1");
}
// We add tfdt atoms when fragmenting, signal this with the iso6 compatible
// brand. This is compatible with users that don't understand tfdt.
if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
ffio_wfourcc(pb, "iso6");
if (mov->mode == MODE_3GP)
ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
else if (mov->mode & MODE_3G2)
ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
else if (mov->mode == MODE_PSP)
ffio_wfourcc(pb, "MSNV");
else if (mov->mode == MODE_MP4)
ffio_wfourcc(pb, "mp41");
if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_FASTSTART)
ffio_wfourcc(pb, "dash");
return update_size(pb, pos);
}
static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
{
AVStream *video_st = s->streams[0];
AVCodecContext *video_codec = s->streams[0]->codec;
AVCodecContext *audio_codec = s->streams[1]->codec;
int audio_rate = audio_codec->sample_rate;
// TODO: should be avg_frame_rate
int frame_rate = ((video_st->time_base.den) * (0x10000)) / (video_st->time_base.num);
int audio_kbitrate = audio_codec->bit_rate / 1000;
int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
avio_wb32(pb, 0x94); /* size */
ffio_wfourcc(pb, "uuid");
ffio_wfourcc(pb, "PROF");
avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
avio_wb32(pb, 0xbb88695c);
avio_wb32(pb, 0xfac9c740);
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x3); /* 3 sections ? */
avio_wb32(pb, 0x14); /* size */
ffio_wfourcc(pb, "FPRF");
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x0); /* ? */
avio_wb32(pb, 0x2c); /* size */
ffio_wfourcc(pb, "APRF"); /* audio */
avio_wb32(pb, 0x0);
avio_wb32(pb, 0x2); /* TrackID */
ffio_wfourcc(pb, "mp4a");
avio_wb32(pb, 0x20f);
avio_wb32(pb, 0x0);
avio_wb32(pb, audio_kbitrate);
avio_wb32(pb, audio_kbitrate);
avio_wb32(pb, audio_rate);
avio_wb32(pb, audio_codec->channels);
avio_wb32(pb, 0x34); /* size */
ffio_wfourcc(pb, "VPRF"); /* video */
avio_wb32(pb, 0x0);
avio_wb32(pb, 0x1); /* TrackID */
if (video_codec->codec_id == AV_CODEC_ID_H264) {
ffio_wfourcc(pb, "avc1");
avio_wb16(pb, 0x014D);
avio_wb16(pb, 0x0015);
} else {
ffio_wfourcc(pb, "mp4v");
avio_wb16(pb, 0x0000);
avio_wb16(pb, 0x0103);
}
avio_wb32(pb, 0x0);
avio_wb32(pb, video_kbitrate);
avio_wb32(pb, video_kbitrate);
avio_wb32(pb, frame_rate);
avio_wb32(pb, frame_rate);
avio_wb16(pb, video_codec->width);
avio_wb16(pb, video_codec->height);
avio_wb32(pb, 0x010001); /* ? */
}
static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
{
uint32_t c = -1;
int i, closed_gop = 0;
for (i = 0; i < pkt->size - 4; i++) {
c = (c << 8) + pkt->data[i];
if (c == 0x1b8) { // gop
closed_gop = pkt->data[i + 4] >> 6 & 0x01;
} else if (c == 0x100) { // pic
int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
if (!temp_ref || closed_gop) // I picture is not reordered
*flags = MOV_SYNC_SAMPLE;
else
*flags = MOV_PARTIAL_SYNC_SAMPLE;
break;
}
}
return 0;
}
static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
{
const uint8_t *start, *next, *end = pkt->data + pkt->size;
int seq = 0, entry = 0;
int key = pkt->flags & AV_PKT_FLAG_KEY;
start = find_next_marker(pkt->data, end);
for (next = start; next < end; start = next) {
next = find_next_marker(start + 4, end);
switch (AV_RB32(start)) {
case VC1_CODE_SEQHDR:
seq = 1;
break;
case VC1_CODE_ENTRYPOINT:
entry = 1;
break;
case VC1_CODE_SLICE:
trk->vc1_info.slices = 1;
break;
}
}
if (!trk->entry && !fragment) {
/* First packet in first fragment */
trk->vc1_info.first_packet_seq = seq;
trk->vc1_info.first_packet_entry = entry;
} else if ((seq && !trk->vc1_info.packet_seq) ||
(entry && !trk->vc1_info.packet_entry)) {
int i;
for (i = 0; i < trk->entry; i++)
trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
trk->has_keyframes = 0;
if (seq)
trk->vc1_info.packet_seq = 1;
if (entry)
trk->vc1_info.packet_entry = 1;
if (!fragment) {
/* First fragment */
if ((!seq || trk->vc1_info.first_packet_seq) &&
(!entry || trk->vc1_info.first_packet_entry)) {
/* First packet had the same headers as this one, readd the
* sync sample flag. */
trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
trk->has_keyframes = 1;
}
}
}
if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
key = seq && entry;
else if (trk->vc1_info.packet_seq)
key = seq;
else if (trk->vc1_info.packet_entry)
key = entry;
if (key) {
trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
trk->has_keyframes++;
}
}
static int mov_flush_fragment(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i, first_track = -1;
int64_t mdat_size = 0;
if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
return 0;
if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
int64_t pos = avio_tell(s->pb);
int ret;
AVIOContext *moov_buf;
uint8_t *buf;
int buf_size;
for (i = 0; i < mov->nb_streams; i++)
if (!mov->tracks[i].entry)
break;
/* Don't write the initial moov unless all tracks have data */
if (i < mov->nb_streams)
return 0;
if ((ret = ffio_open_null_buf(&moov_buf)) < 0)
return ret;
mov_write_moov_tag(moov_buf, mov, s);
buf_size = ffio_close_null_buf(moov_buf);
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = pos + buf_size + 8;
mov_write_moov_tag(s->pb, mov, s);
buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
mov->mdat_buf = NULL;
avio_wb32(s->pb, buf_size + 8);
ffio_wfourcc(s->pb, "mdat");
avio_write(s->pb, buf, buf_size);
av_free(buf);
mov->fragments++;
mov->mdat_size = 0;
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].entry)
mov->tracks[i].frag_start += mov->tracks[i].start_dts +
mov->tracks[i].track_duration -
mov->tracks[i].cluster[0].dts;
mov->tracks[i].entry = 0;
}
avio_flush(s->pb);
return 0;
}
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
track->data_offset = 0;
else
track->data_offset = mdat_size;
if (!track->mdat_buf)
continue;
mdat_size += avio_tell(track->mdat_buf);
if (first_track < 0)
first_track = i;
}
if (!mdat_size)
return 0;
for (i = 0; i < mov->nb_streams; i++) {
MOVTrack *track = &mov->tracks[i];
int buf_size, write_moof = 1, moof_tracks = -1;
uint8_t *buf;
int64_t duration = 0;
if (track->entry)
duration = track->start_dts + track->track_duration -
track->cluster[0].dts;
if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
if (!track->mdat_buf)
continue;
mdat_size = avio_tell(track->mdat_buf);
moof_tracks = i;
} else {
write_moof = i == first_track;
}
if (write_moof) {
avio_flush(s->pb);
mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
mov->fragments++;
avio_wb32(s->pb, mdat_size + 8);
ffio_wfourcc(s->pb, "mdat");
}
if (track->entry)
track->frag_start += duration;
track->entry = 0;
if (!track->mdat_buf)
continue;
buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
track->mdat_buf = NULL;
avio_write(s->pb, buf, buf_size);
av_free(buf);
}
mov->mdat_size = 0;
avio_flush(s->pb);
return 0;
}
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVMuxContext *mov = s->priv_data;
AVIOContext *pb = s->pb;
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
unsigned int samples_in_chunk = 0;
int size = pkt->size, ret = 0;
uint8_t *reformatted_data = NULL;
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
int ret;
if (mov->fragments > 0) {
if (!trk->mdat_buf) {
if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
return ret;
}
pb = trk->mdat_buf;
} else {
if (!mov->mdat_buf) {
if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
return ret;
}
pb = mov->mdat_buf;
}
}
if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
/* We must find out how many AMR blocks there are in one packet */
static uint16_t packed_size[16] =
{13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
int len = 0;
while (len < size && samples_in_chunk < 100) {
len += packed_size[(pkt->data[len] >> 3) & 0x0F];
samples_in_chunk++;
}
if (samples_in_chunk > 1) {
av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
return -1;
}
} else if (trk->sample_size)
samples_in_chunk = size / trk->sample_size;
else
samples_in_chunk = 1;
/* copy extradata if it exists */
if (trk->vos_len == 0 && enc->extradata_size > 0) {
trk->vos_len = enc->extradata_size;
trk->vos_data = av_malloc(trk->vos_len);
memcpy(trk->vos_data, enc->extradata, trk->vos_len);
}
if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1) {
/* from x264 or from bytestream h264 */
/* nal reformating needed */
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
&size);
avio_write(pb, reformatted_data, size);
} else {
size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
}
} else if (enc->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
(AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
/* extradata is Annex B, assume the bitstream is too and convert it */
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
avio_write(pb, reformatted_data, size);
} else {
size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
}
} else {
avio_write(pb, pkt->data, size);
}
if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
/* copy frame to create needed atoms */
trk->vos_len = size;
trk->vos_data = av_malloc(size);
if (!trk->vos_data) {
ret = AVERROR(ENOMEM);
goto err;
}
memcpy(trk->vos_data, pkt->data, size);
}
if (trk->entry >= trk->cluster_capacity) {
unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
if (av_reallocp_array(&trk->cluster, new_capacity,
sizeof(*trk->cluster))) {
ret = AVERROR(ENOMEM);
goto err;
}
trk->cluster_capacity = new_capacity;
}
trk->cluster[trk->entry].pos = avio_tell(pb) - size;
trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
trk->cluster[trk->entry].size = size;
trk->cluster[trk->entry].entries = samples_in_chunk;
trk->cluster[trk->entry].dts = pkt->dts;
if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
if (!trk->frag_discont) {
/* First packet of a new fragment. We already wrote the duration
* of the last packet of the previous fragment based on track_duration,
* which might not exactly match our dts. Therefore adjust the dts
* of this packet to be what the previous packets duration implies. */
trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
} else {
/* New fragment, but discontinuous from previous fragments.
* Pretend the duration sum of the earlier fragments is
* pkt->dts - trk->start_dts. */
trk->frag_start = pkt->dts - trk->start_dts;
trk->frag_discont = 0;
}
}
if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
/* Not using edit lists and shifting the first track to start from zero.
* If the other streams start from a later timestamp, we won't be able
* to signal the difference in starting time without an edit list.
* Thus move the timestamp for this first sample to 0, increasing
* its duration instead. */
trk->cluster[trk->entry].dts = trk->start_dts = 0;
}
if (trk->start_dts == AV_NOPTS_VALUE) {
trk->start_dts = pkt->dts;
if (trk->frag_discont) {
/* Pretend the whole stream started at dts=0, with earlier framgents
* already written, with a duration summing up to pkt->dts. */
trk->frag_start = pkt->dts;
trk->start_dts = 0;
trk->frag_discont = 0;
} else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
av_log(s, AV_LOG_WARNING,
"Track %d starts with a nonzero dts %"PRId64". This "
"currently isn't handled correctly in combination with "
"empty_moov.\n", pkt->stream_index, pkt->dts);
}
trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
if (pkt->pts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_WARNING, "pts has no value\n");
pkt->pts = pkt->dts;
}
if (pkt->dts != pkt->pts)
trk->flags |= MOV_TRACK_CTTS;
trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
trk->cluster[trk->entry].flags = 0;
if (enc->codec_id == AV_CODEC_ID_VC1) {
mov_parse_vc1_frame(pkt, trk, mov->fragments);
} else if (pkt->flags & AV_PKT_FLAG_KEY) {
if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
trk->entry > 0) { // force sync sample for the first key frame
mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
trk->flags |= MOV_TRACK_STPS;
} else {
trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
}
if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
trk->has_keyframes++;
}
trk->entry++;
trk->sample_count += samples_in_chunk;
mov->mdat_size += size;
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
reformatted_data, size);
err:
av_free(reformatted_data);
return ret;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
if (!pkt) {
mov_flush_fragment(s);
return 1;
} else {
MOVMuxContext *mov = s->priv_data;
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
int64_t frag_duration = 0;
int size = pkt->size;
if (!pkt->size)
return 0; /* Discard 0 sized packets */
if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
int i;
for (i = 0; i < s->nb_streams; i++)
mov->tracks[i].frag_discont = 1;
mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;
}
if (trk->entry)
frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
s->streams[pkt->stream_index]->time_base,
AV_TIME_BASE_Q);
if ((mov->max_fragment_duration &&
frag_duration >= mov->max_fragment_duration) ||
(mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
(mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
enc->codec_type == AVMEDIA_TYPE_VIDEO &&
trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
if (frag_duration >= mov->min_fragment_duration)
mov_flush_fragment(s);
}
return ff_mov_write_packet(s, pkt);
}
}
// QuickTime chapters involve an additional text track with the chapter names
// as samples, and a tref pointing from the other tracks to the chapter one.
static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
{
MOVMuxContext *mov = s->priv_data;
MOVTrack *track = &mov->tracks[tracknum];
AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
int i, len;
// These properties are required to make QT recognize the chapter track
uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
track->mode = mov->mode;
track->tag = MKTAG('t','e','x','t');
track->timescale = MOV_TIMESCALE;
track->enc = avcodec_alloc_context3(NULL);
if (!track->enc)
return AVERROR(ENOMEM);
track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
track->enc->extradata = av_malloc(sizeof(chapter_properties));
if (!track->enc->extradata)
return AVERROR(ENOMEM);
track->enc->extradata_size = sizeof(chapter_properties);
memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
for (i = 0; i < s->nb_chapters; i++) {
AVChapter *c = s->chapters[i];
AVDictionaryEntry *t;
int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
pkt.duration = end - pkt.dts;
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
const char encd[12] = {
0x00, 0x00, 0x00, 0x0C,
'e', 'n', 'c', 'd',
0x00, 0x00, 0x01, 0x00 };
len = strlen(t->value);
pkt.size = len + 2 + 12;
pkt.data = av_malloc(pkt.size);
if (!pkt.data)
return AVERROR(ENOMEM);
AV_WB16(pkt.data, len);
memcpy(pkt.data + 2, t->value, len);
memcpy(pkt.data + len + 2, encd, sizeof(encd));
ff_mov_write_packet(s, &pkt);
av_freep(&pkt.data);
}
}
return 0;
}
/*
* st->disposition controls the "enabled" flag in the tkhd tag.
* QuickTime will not play a track if it is not enabled. So make sure
* that one track of each type (audio, video, subtitle) is enabled.
*
* Subtitles are special. For audio and video, setting "enabled" also
* makes the track "default" (i.e. it is rendered when played). For
* subtitles, an "enabled" subtitle is not rendered by default, but
* if no subtitle is enabled, the subtitle menu in QuickTime will be
* empty!
*/
static void enable_tracks(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i;
int enabled[AVMEDIA_TYPE_NB];
int first[AVMEDIA_TYPE_NB];
for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
enabled[i] = 0;
first[i] = -1;
}
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type <= AVMEDIA_TYPE_UNKNOWN ||
st->codec->codec_type >= AVMEDIA_TYPE_NB)
continue;
if (first[st->codec->codec_type] < 0)
first[st->codec->codec_type] = i;
if (st->disposition & AV_DISPOSITION_DEFAULT) {
mov->tracks[i].flags |= MOV_TRACK_ENABLED;
enabled[st->codec->codec_type]++;
}
}
for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
switch (i) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_AUDIO:
case AVMEDIA_TYPE_SUBTITLE:
if (enabled[i] > 1)
mov->per_stream_grouping = 1;
if (!enabled[i] && first[i] >= 0)
mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;
break;
}
}
}
static void mov_free(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int i;
if (mov->chapter_track) {
if (mov->tracks[mov->chapter_track].enc)
av_free(mov->tracks[mov->chapter_track].enc->extradata);
av_freep(&mov->tracks[mov->chapter_track].enc);
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
ff_mov_close_hinting(&mov->tracks[i]);
av_freep(&mov->tracks[i].cluster);
av_freep(&mov->tracks[i].frag_info);
if (mov->tracks[i].vos_len)
av_free(mov->tracks[i].vos_data);
}
av_freep(&mov->tracks);
}
static uint32_t rgb_to_yuv(uint32_t rgb)
{
uint8_t r, g, b;
int y, cb, cr;
r = (rgb >> 16) & 0xFF;
g = (rgb >> 8) & 0xFF;
b = (rgb ) & 0xFF;
y = av_clip_uint8( 16. + 0.257 * r + 0.504 * g + 0.098 * b);
cb = av_clip_uint8(128. - 0.148 * r - 0.291 * g + 0.439 * b);
cr = av_clip_uint8(128. + 0.439 * r - 0.368 * g - 0.071 * b);
return (y << 16) | (cr << 8) | cb;
}
static int mov_create_dvd_sub_decoder_specific_info(MOVTrack *track,
AVStream *st)
{
int i, width = 720, height = 480;
int have_palette = 0, have_size = 0;
uint32_t palette[16];
char *cur = st->codec->extradata;
while (cur && *cur) {
if (strncmp("palette:", cur, 8) == 0) {
int i, count;
count = sscanf(cur + 8,
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "
"%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32"",
&palette[ 0], &palette[ 1], &palette[ 2], &palette[ 3],
&palette[ 4], &palette[ 5], &palette[ 6], &palette[ 7],
&palette[ 8], &palette[ 9], &palette[10], &palette[11],
&palette[12], &palette[13], &palette[14], &palette[15]);
for (i = 0; i < count; i++) {
palette[i] = rgb_to_yuv(palette[i]);
}
have_palette = 1;
} else if (!strncmp("size:", cur, 5)) {
sscanf(cur + 5, "%dx%d", &width, &height);
have_size = 1;
}
if (have_palette && have_size)
break;
cur += strcspn(cur, "\n\r");
cur += strspn(cur, "\n\r");
}
if (have_palette) {
track->vos_data = av_malloc(16*4);
if (!track->vos_data)
return AVERROR(ENOMEM);
for (i = 0; i < 16; i++) {
AV_WB32(track->vos_data + i * 4, palette[i]);
}
track->vos_len = 16 * 4;
}
st->codec->width = width;
st->codec->height = track->height = height;
return 0;
}
static int mov_write_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
MOVMuxContext *mov = s->priv_data;
AVDictionaryEntry *t;
int i, hint_track = 0;
mov->fc = s;
/* Default mode == MP4 */
mov->mode = MODE_MP4;
if (s->oformat) {
if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;
else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V;
}
/* Set the FRAGMENT flag if any of the fragmentation methods are
* enabled. */
if (mov->max_fragment_duration || mov->max_fragment_size ||
mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |
FF_MOV_FLAG_FRAG_KEYFRAME |
FF_MOV_FLAG_FRAG_CUSTOM))
mov->flags |= FF_MOV_FLAG_FRAGMENT;
/* Set other implicit flags immediately */
if (mov->mode == MODE_ISM)
mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF |
FF_MOV_FLAG_FRAGMENT;
if (mov->flags & FF_MOV_FLAG_DASH)
mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV |
FF_MOV_FLAG_DEFAULT_BASE_MOOF;
if (mov->use_editlist < 0) {
mov->use_editlist = 1;
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
// If we can avoid needing an edit list by shifting the
// tracks, prefer that over (trying to) write edit lists
// in fragmented output.
if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO ||
s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)
mov->use_editlist = 0;
}
}
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && mov->use_editlist)
av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov\n");
if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO)
s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO;
/* Non-seekable output is ok if using fragmentation. If ism_lookahead
* is enabled, we don't support non-seekable output at all. */
if (!s->pb->seekable &&
(!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) {
av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
return AVERROR(EINVAL);
}
mov_write_ftyp_tag(pb,s);
if (mov->mode == MODE_PSP) {
if (s->nb_streams != 2) {
av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
return AVERROR(EINVAL);
}
mov_write_uuidprof_tag(pb, s);
}
mov->nb_streams = s->nb_streams;
if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
mov->chapter_track = mov->nb_streams++;
if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
/* Add hint tracks for each audio and video stream */
hint_track = mov->nb_streams;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
mov->nb_streams++;
}
}
}
// Reserve an extra stream for chapters for the case where chapters
// are written in the trailer
mov->tracks = av_mallocz((mov->nb_streams + 1) * sizeof(*mov->tracks));
if (!mov->tracks)
return AVERROR(ENOMEM);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st= s->streams[i];
MOVTrack *track= &mov->tracks[i];
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
track->st = st;
track->enc = st->codec;
track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
if (track->language < 0)
track->language = 0;
track->mode = mov->mode;
track->tag = mov_find_codec_tag(s, track);
if (!track->tag) {
av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
"codec not currently supported in container\n", i);
goto error;
}
/* If hinting of this track is enabled by a later hint track,
* this is updated. */
track->hint_track = -1;
track->start_dts = AV_NOPTS_VALUE;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
goto error;
}
track->height = track->tag >> 24 == 'n' ? 486 : 576;
}
track->timescale = st->time_base.den;
if (track->mode == MODE_MOV && track->timescale > 100000)
av_log(s, AV_LOG_WARNING,
"WARNING codec timebase is very high. If duration is too long,\n"
"file may not be playable by quicktime. Specify a shorter timebase\n"
"or choose different container.\n");
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
track->timescale = st->codec->sample_rate;
/* set sample_size for PCM and ADPCM */
if (av_get_bits_per_sample(st->codec->codec_id) ||
st->codec->codec_id == AV_CODEC_ID_ILBC) {
if (!st->codec->block_align) {
av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set\n", i);
goto error;
}
track->sample_size = st->codec->block_align;
}
/* set audio_vbr for compressed audio */
if (av_get_bits_per_sample(st->codec->codec_id) < 8) {
track->audio_vbr = 1;
}
if (track->mode != MODE_MOV &&
track->enc->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) {
av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
i, track->enc->sample_rate);
goto error;
}
} else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
track->timescale = st->time_base.den;
} else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
track->timescale = st->time_base.den;
}
if (!track->height)
track->height = st->codec->height;
/* The ism specific timescale isn't mandatory, but is assumed by
* some tools, such as mp4split. */
if (mov->mode == MODE_ISM)
track->timescale = 10000000;
avpriv_set_pts_info(st, 64, 1, track->timescale);
/* copy extradata if it exists */
if (st->codec->extradata_size) {
if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
mov_create_dvd_sub_decoder_specific_info(track, st);
else {
track->vos_len = st->codec->extradata_size;
track->vos_data = av_malloc(track->vos_len);
memcpy(track->vos_data, st->codec->extradata, track->vos_len);
}
}
}
enable_tracks(s);
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
/* If no fragmentation options have been set, set a default. */
if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |
FF_MOV_FLAG_FRAG_CUSTOM)) &&
!mov->max_fragment_duration && !mov->max_fragment_size)
mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME;
} else {
if (mov->flags & FF_MOV_FLAG_FASTSTART)
mov->reserved_moov_pos = avio_tell(pb);
mov_write_mdat_tag(pb, mov);
}
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
mov->time = ff_iso8601_to_unix_time(t->value);
if (mov->time)
mov->time += 0x7C25B080; // 1970 based -> 1904 based
if (mov->chapter_track)
if (mov_create_chapter_track(s, mov->chapter_track) < 0)
goto error;
if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
/* Initialize the hint tracks for each audio and video stream */
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
ff_mov_init_hinting(s, hint_track, i);
hint_track++;
}
}
}
avio_flush(pb);
if (mov->flags & FF_MOV_FLAG_ISML)
mov_write_isml_manifest(pb, mov);
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
mov_write_moov_tag(pb, mov, s);
mov->fragments++;
if (mov->flags & FF_MOV_FLAG_FASTSTART)
mov->reserved_moov_pos = avio_tell(pb);
}
return 0;
error:
mov_free(s);
return -1;
}
static int get_moov_size(AVFormatContext *s)
{
int ret;
AVIOContext *moov_buf;
MOVMuxContext *mov = s->priv_data;
if ((ret = ffio_open_null_buf(&moov_buf)) < 0)
return ret;
mov_write_moov_tag(moov_buf, mov, s);
return ffio_close_null_buf(moov_buf);
}
static int get_sidx_size(AVFormatContext *s)
{
int ret;
AVIOContext *buf;
MOVMuxContext *mov = s->priv_data;
if ((ret = ffio_open_null_buf(&buf)) < 0)
return ret;
mov_write_sidx_tags(buf, mov, -1, 0);
return ffio_close_null_buf(buf);
}
/*
* This function gets the moov size if moved to the top of the file: the chunk
* offset table can switch between stco (32-bit entries) to co64 (64-bit
* entries) when the moov is moved to the beginning, so the size of the moov
* would change. It also updates the chunk offset tables.
*/
static int compute_moov_size(AVFormatContext *s)
{
int i, moov_size, moov_size2;
MOVMuxContext *mov = s->priv_data;
moov_size = get_moov_size(s);
if (moov_size < 0)
return moov_size;
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += moov_size;
moov_size2 = get_moov_size(s);
if (moov_size2 < 0)
return moov_size2;
/* if the size changed, we just switched from stco to co64 and need to
* update the offsets */
if (moov_size2 != moov_size)
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += moov_size2 - moov_size;
return moov_size2;
}
static int compute_sidx_size(AVFormatContext *s)
{
int i, sidx_size;
MOVMuxContext *mov = s->priv_data;
sidx_size = get_sidx_size(s);
if (sidx_size < 0)
return sidx_size;
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset += sidx_size;
return sidx_size;
}
static int shift_data(AVFormatContext *s)
{
int ret = 0, moov_size;
MOVMuxContext *mov = s->priv_data;
int64_t pos, pos_end = avio_tell(s->pb);
uint8_t *buf, *read_buf[2];
int read_buf_id = 0;
int read_size[2];
AVIOContext *read_pb;
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
moov_size = compute_sidx_size(s);
else
moov_size = compute_moov_size(s);
if (moov_size < 0)
return moov_size;
buf = av_malloc(moov_size * 2);
if (!buf)
return AVERROR(ENOMEM);
read_buf[0] = buf;
read_buf[1] = buf + moov_size;
/* Shift the data: the AVIO context of the output can only be used for
* writing, so we re-open the same output, but for reading. It also avoids
* a read/seek/write/seek back and forth. */
avio_flush(s->pb);
ret = avio_open(&read_pb, s->filename, AVIO_FLAG_READ);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for "
"the second pass (faststart)\n", s->filename);
goto end;
}
/* mark the end of the shift to up to the last data we wrote, and get ready
* for writing */
pos_end = avio_tell(s->pb);
avio_seek(s->pb, mov->reserved_moov_pos + moov_size, SEEK_SET);
/* start reading at where the new moov will be placed */
avio_seek(read_pb, mov->reserved_moov_pos, SEEK_SET);
pos = avio_tell(read_pb);
#define READ_BLOCK do { \
read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], moov_size); \
read_buf_id ^= 1; \
} while (0)
/* shift data by chunk of at most moov_size */
READ_BLOCK;
do {
int n;
READ_BLOCK;
n = read_size[read_buf_id];
if (n <= 0)
break;
avio_write(s->pb, read_buf[read_buf_id], n);
pos += n;
} while (pos < pos_end);
avio_close(read_pb);
end:
av_free(buf);
return ret;
}
static int mov_write_trailer(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
AVIOContext *pb = s->pb;
int res = 0;
int i;
int64_t moov_pos;
// If there were no chapters when the header was written, but there
// are chapters now, write them in the trailer. This only works
// when we are not doing fragments.
if (!mov->chapter_track && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) {
mov->chapter_track = mov->nb_streams++;
if ((res = mov_create_chapter_track(s, mov->chapter_track)) < 0)
goto error;
}
}
if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
moov_pos = avio_tell(pb);
/* Write size of mdat tag */
if (mov->mdat_size + 8 <= UINT32_MAX) {
avio_seek(pb, mov->mdat_pos, SEEK_SET);
avio_wb32(pb, mov->mdat_size + 8);
} else {
/* overwrite 'wide' placeholder atom */
avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
/* special value: real atom size will be 64 bit value after
* tag field */
avio_wb32(pb, 1);
ffio_wfourcc(pb, "mdat");
avio_wb64(pb, mov->mdat_size + 16);
}
avio_seek(pb, moov_pos, SEEK_SET);
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
av_log(s, AV_LOG_INFO, "Starting second pass: moving the moov atom to the beginning of the file\n");
res = shift_data(s);
if (res == 0) {
avio_seek(pb, mov->reserved_moov_pos, SEEK_SET);
mov_write_moov_tag(pb, mov, s);
}
} else {
mov_write_moov_tag(pb, mov, s);
}
} else {
mov_flush_fragment(s);
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = 0;
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
av_log(s, AV_LOG_INFO, "Starting second pass: inserting sidx atoms\n");
res = shift_data(s);
if (res == 0) {
int64_t end = avio_tell(pb);
avio_seek(pb, mov->reserved_moov_pos, SEEK_SET);
mov_write_sidx_tags(pb, mov, -1, 0);
avio_seek(pb, end, SEEK_SET);
mov_write_mfra_tag(pb, mov);
}
} else {
mov_write_mfra_tag(pb, mov);
}
}
for (i = 0; i < mov->nb_streams; i++) {
if (mov->flags & FF_MOV_FLAG_FRAGMENT &&
mov->tracks[i].vc1_info.struct_offset && s->pb->seekable) {
int64_t off = avio_tell(pb);
uint8_t buf[7];
if (mov_write_dvc1_structs(&mov->tracks[i], buf) >= 0) {
avio_seek(pb, mov->tracks[i].vc1_info.struct_offset, SEEK_SET);
avio_write(pb, buf, 7);
avio_seek(pb, off, SEEK_SET);
}
}
}
error:
mov_free(s);
return res;
}
#if CONFIG_MOV_MUXER
MOV_CLASS(mov)
AVOutputFormat ff_mov_muxer = {
.name = "mov",
.long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
.extensions = "mov",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){
ff_codec_movvideo_tags, ff_codec_movaudio_tags, 0
},
.priv_class = &mov_muxer_class,
};
#endif
#if CONFIG_TGP_MUXER
MOV_CLASS(tgp)
AVOutputFormat ff_tgp_muxer = {
.name = "3gp",
.long_name = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),
.extensions = "3gp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AMR_NB,
.video_codec = AV_CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tgp_muxer_class,
};
#endif
#if CONFIG_MP4_MUXER
MOV_CLASS(mp4)
AVOutputFormat ff_mp4_muxer = {
.name = "mp4",
.long_name = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),
.mime_type = "application/mp4",
.extensions = "mp4",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &mp4_muxer_class,
};
#endif
#if CONFIG_PSP_MUXER
MOV_CLASS(psp)
AVOutputFormat ff_psp_muxer = {
.name = "psp",
.long_name = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),
.extensions = "mp4,psp",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &psp_muxer_class,
};
#endif
#if CONFIG_TG2_MUXER
MOV_CLASS(tg2)
AVOutputFormat ff_tg2_muxer = {
.name = "3g2",
.long_name = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),
.extensions = "3g2",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AMR_NB,
.video_codec = AV_CODEC_ID_H263,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tg2_muxer_class,
};
#endif
#if CONFIG_IPOD_MUXER
MOV_CLASS(ipod)
AVOutputFormat ff_ipod_muxer = {
.name = "ipod",
.long_name = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),
.mime_type = "application/mp4",
.extensions = "m4v,m4a",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
.priv_class = &ipod_muxer_class,
};
#endif
#if CONFIG_ISMV_MUXER
MOV_CLASS(ismv)
AVOutputFormat ff_ismv_muxer = {
.name = "ismv",
.long_name = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),
.mime_type = "application/mp4",
.extensions = "ismv,isma",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &ismv_muxer_class,
};
#endif
#if CONFIG_F4V_MUXER
MOV_CLASS(f4v)
AVOutputFormat ff_f4v_muxer = {
.name = "f4v",
.long_name = NULL_IF_CONFIG_SMALL("F4V Adobe Flash Video"),
.mime_type = "application/f4v",
.extensions = "f4v",
.priv_data_size = sizeof(MOVMuxContext),
.audio_codec = AV_CODEC_ID_AAC,
.video_codec = AV_CODEC_ID_H264,
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_f4v_tags, 0 },
.priv_class = &f4v_muxer_class,
};
#endif
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