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ffmpeg/libavcodec/utils.c
Hendrik Leppkes 31741aecbf avcodec: disallow hwaccel with frame threads 
HWAccels with frame threads are fundamentally flawed in avcodecs current
design, and there are several known problems ranging from image corruption
to driver crashes.

These problems come down to two design problems in the interaction of
threads and HWAccel decoding:

(1)
While avcodec prevents parallel decoding and as such simultaneous access
to the hardware accelerator from the decoding threads, it cannot account
for the user code and its access to the hardware surfaces and the hardware
itself.

This can result in image corruption or even driver crashes if the
user code locks image surfaces while they are being used by the decoder
threads as reference frames.

The current HWAccel API does not offer any way to ensure exclusive access
to the hardware or the surfaces if frame threading is used.

(2)
Initialization of the HWAccel with frame threads is non-trivial, and many
decoders had and still have issues that cause excess calls to the
get_format callback.

This will potentially cause duplicate HWAccel initialization, which in
extreme cases can even lead to driver crashes if the HWAccel is
re-initialized while the user code is actively accessing the hardware
surfaces associated with it, or lead to image corruption due to lost
reference frames.

While both of these issues are solvable, fixing (1) would at least require
a huge API redesign which would move a lot of complexity into the user
code.

The only reason the combination of frame threads and HWAccel was
considered useful is to allow a seamless fallback to multi-threaded
software decoding if the HWAccel is not available, however the issues
outlined above far outweigh this.

The proper solution for a fallback is to re-open the AVCodecContext with
threading enabled if the HWAccel failed, which is a practice commonly used
by various user applications using avcodec today already.

Reviewed-by: Gwenole Beauchesne <gb.devel@gmail.com>
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
2015-10-27 10:19:05 +01:00

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/*
* utils for libavcodec
* Copyright (c) 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* utils.
*/
#include "config.h"
#include "libavutil/atomic.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/frame.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem_internal.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/dict.h"
#include "avcodec.h"
#include "libavutil/opt.h"
#include "me_cmp.h"
#include "mpegvideo.h"
#include "thread.h"
#include "frame_thread_encoder.h"
#include "internal.h"
#include "raw.h"
#include "bytestream.h"
#include "version.h"
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
#include <float.h>
#if CONFIG_ICONV
# include <iconv.h>
#endif
#if HAVE_PTHREADS
#include <pthread.h>
#elif HAVE_W32THREADS
#include "compat/w32pthreads.h"
#elif HAVE_OS2THREADS
#include "compat/os2threads.h"
#endif
#include "libavutil/ffversion.h"
const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
static int default_lockmgr_cb(void **arg, enum AVLockOp op)
{
void * volatile * mutex = arg;
int err;
switch (op) {
case AV_LOCK_CREATE:
return 0;
case AV_LOCK_OBTAIN:
if (!*mutex) {
pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
if (!tmp)
return AVERROR(ENOMEM);
if ((err = pthread_mutex_init(tmp, NULL))) {
av_free(tmp);
return AVERROR(err);
}
if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
pthread_mutex_destroy(tmp);
av_free(tmp);
}
}
if ((err = pthread_mutex_lock(*mutex)))
return AVERROR(err);
return 0;
case AV_LOCK_RELEASE:
if ((err = pthread_mutex_unlock(*mutex)))
return AVERROR(err);
return 0;
case AV_LOCK_DESTROY:
if (*mutex)
pthread_mutex_destroy(*mutex);
av_free(*mutex);
avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
return 0;
}
return 1;
}
static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
#else
static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
#endif
volatile int ff_avcodec_locked;
static int volatile entangled_thread_counter = 0;
static void *codec_mutex;
static void *avformat_mutex;
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
}
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
}
/* encoder management */
static AVCodec *first_avcodec = NULL;
static AVCodec **last_avcodec = &first_avcodec;
AVCodec *av_codec_next(const AVCodec *c)
{
if (c)
return c->next;
else
return first_avcodec;
}
static av_cold void avcodec_init(void)
{
static int initialized = 0;
if (initialized != 0)
return;
initialized = 1;
if (CONFIG_ME_CMP)
ff_me_cmp_init_static();
}
int av_codec_is_encoder(const AVCodec *codec)
{
return codec && (codec->encode_sub || codec->encode2);
}
int av_codec_is_decoder(const AVCodec *codec)
{
return codec && codec->decode;
}
av_cold void avcodec_register(AVCodec *codec)
{
AVCodec **p;
avcodec_init();
p = last_avcodec;
codec->next = NULL;
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
p = &(*p)->next;
last_avcodec = &codec->next;
if (codec->init_static_data)
codec->init_static_data(codec);
}
#if FF_API_EMU_EDGE
unsigned avcodec_get_edge_width(void)
{
return EDGE_WIDTH;
}
#endif
#if FF_API_SET_DIMENSIONS
void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
{
int ret = ff_set_dimensions(s, width, height);
if (ret < 0) {
av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
}
}
#endif
int ff_set_dimensions(AVCodecContext *s, int width, int height)
{
int ret = av_image_check_size(width, height, 0, s);
if (ret < 0)
width = height = 0;
s->coded_width = width;
s->coded_height = height;
s->width = FF_CEIL_RSHIFT(width, s->lowres);
s->height = FF_CEIL_RSHIFT(height, s->lowres);
return ret;
}
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
{
int ret = av_image_check_sar(avctx->width, avctx->height, sar);
if (ret < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
sar.num, sar.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
return ret;
} else {
avctx->sample_aspect_ratio = sar;
}
return 0;
}
int ff_side_data_update_matrix_encoding(AVFrame *frame,
enum AVMatrixEncoding matrix_encoding)
{
AVFrameSideData *side_data;
enum AVMatrixEncoding *data;
side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
if (!side_data)
side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
sizeof(enum AVMatrixEncoding));
if (!side_data)
return AVERROR(ENOMEM);
data = (enum AVMatrixEncoding*)side_data->data;
*data = matrix_encoding;
return 0;
}
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[AV_NUM_DATA_POINTERS])
{
int i;
int w_align = 1;
int h_align = 1;
AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
if (desc) {
w_align = 1 << desc->log2_chroma_w;
h_align = 1 << desc->log2_chroma_h;
}
switch (s->pix_fmt) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_UYVY422:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV440P:
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_GBRP:
case AV_PIX_FMT_GBRAP:
case AV_PIX_FMT_GRAY8:
case AV_PIX_FMT_GRAY16BE:
case AV_PIX_FMT_GRAY16LE:
case AV_PIX_FMT_YUVJ420P:
case AV_PIX_FMT_YUVJ422P:
case AV_PIX_FMT_YUVJ440P:
case AV_PIX_FMT_YUVJ444P:
case AV_PIX_FMT_YUVA420P:
case AV_PIX_FMT_YUVA422P:
case AV_PIX_FMT_YUVA444P:
case AV_PIX_FMT_YUV420P9LE:
case AV_PIX_FMT_YUV420P9BE:
case AV_PIX_FMT_YUV420P10LE:
case AV_PIX_FMT_YUV420P10BE:
case AV_PIX_FMT_YUV420P12LE:
case AV_PIX_FMT_YUV420P12BE:
case AV_PIX_FMT_YUV420P14LE:
case AV_PIX_FMT_YUV420P14BE:
case AV_PIX_FMT_YUV420P16LE:
case AV_PIX_FMT_YUV420P16BE:
case AV_PIX_FMT_YUVA420P9LE:
case AV_PIX_FMT_YUVA420P9BE:
case AV_PIX_FMT_YUVA420P10LE:
case AV_PIX_FMT_YUVA420P10BE:
case AV_PIX_FMT_YUVA420P16LE:
case AV_PIX_FMT_YUVA420P16BE:
case AV_PIX_FMT_YUV422P9LE:
case AV_PIX_FMT_YUV422P9BE:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV422P10BE:
case AV_PIX_FMT_YUV422P12LE:
case AV_PIX_FMT_YUV422P12BE:
case AV_PIX_FMT_YUV422P14LE:
case AV_PIX_FMT_YUV422P14BE:
case AV_PIX_FMT_YUV422P16LE:
case AV_PIX_FMT_YUV422P16BE:
case AV_PIX_FMT_YUVA422P9LE:
case AV_PIX_FMT_YUVA422P9BE:
case AV_PIX_FMT_YUVA422P10LE:
case AV_PIX_FMT_YUVA422P10BE:
case AV_PIX_FMT_YUVA422P16LE:
case AV_PIX_FMT_YUVA422P16BE:
case AV_PIX_FMT_YUV440P10LE:
case AV_PIX_FMT_YUV440P10BE:
case AV_PIX_FMT_YUV440P12LE:
case AV_PIX_FMT_YUV440P12BE:
case AV_PIX_FMT_YUV444P9LE:
case AV_PIX_FMT_YUV444P9BE:
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV444P10BE:
case AV_PIX_FMT_YUV444P12LE:
case AV_PIX_FMT_YUV444P12BE:
case AV_PIX_FMT_YUV444P14LE:
case AV_PIX_FMT_YUV444P14BE:
case AV_PIX_FMT_YUV444P16LE:
case AV_PIX_FMT_YUV444P16BE:
case AV_PIX_FMT_YUVA444P9LE:
case AV_PIX_FMT_YUVA444P9BE:
case AV_PIX_FMT_YUVA444P10LE:
case AV_PIX_FMT_YUVA444P10BE:
case AV_PIX_FMT_YUVA444P16LE:
case AV_PIX_FMT_YUVA444P16BE:
case AV_PIX_FMT_GBRP9LE:
case AV_PIX_FMT_GBRP9BE:
case AV_PIX_FMT_GBRP10LE:
case AV_PIX_FMT_GBRP10BE:
case AV_PIX_FMT_GBRP12LE:
case AV_PIX_FMT_GBRP12BE:
case AV_PIX_FMT_GBRP14LE:
case AV_PIX_FMT_GBRP14BE:
case AV_PIX_FMT_GBRP16LE:
case AV_PIX_FMT_GBRP16BE:
w_align = 16; //FIXME assume 16 pixel per macroblock
h_align = 16 * 2; // interlaced needs 2 macroblocks height
break;
case AV_PIX_FMT_YUV411P:
case AV_PIX_FMT_YUVJ411P:
case AV_PIX_FMT_UYYVYY411:
w_align = 32;
h_align = 16 * 2;
break;
case AV_PIX_FMT_YUV410P:
if (s->codec_id == AV_CODEC_ID_SVQ1) {
w_align = 64;
h_align = 64;
}
break;
case AV_PIX_FMT_RGB555:
if (s->codec_id == AV_CODEC_ID_RPZA) {
w_align = 4;
h_align = 4;
}
break;
case AV_PIX_FMT_PAL8:
case AV_PIX_FMT_BGR8:
case AV_PIX_FMT_RGB8:
if (s->codec_id == AV_CODEC_ID_SMC ||
s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
if (s->codec_id == AV_CODEC_ID_JV) {
w_align = 8;
h_align = 8;
}
break;
case AV_PIX_FMT_BGR24:
if ((s->codec_id == AV_CODEC_ID_MSZH) ||
(s->codec_id == AV_CODEC_ID_ZLIB)) {
w_align = 4;
h_align = 4;
}
break;
case AV_PIX_FMT_RGB24:
if (s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
break;
default:
break;
}
if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
w_align = FFMAX(w_align, 8);
}
*width = FFALIGN(*width, w_align);
*height = FFALIGN(*height, h_align);
if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
// some of the optimized chroma MC reads one line too much
// which is also done in mpeg decoders with lowres > 0
*height += 2;
// H.264 uses edge emulation for out of frame motion vectors, for this
// it requires a temporary area large enough to hold a 21x21 block,
// increasing witdth ensure that the temporary area is large enough,
// the next rounded up width is 32
*width = FFMAX(*width, 32);
}
for (i = 0; i < 4; i++)
linesize_align[i] = STRIDE_ALIGN;
}
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
int chroma_shift = desc->log2_chroma_w;
int linesize_align[AV_NUM_DATA_POINTERS];
int align;
avcodec_align_dimensions2(s, width, height, linesize_align);
align = FFMAX(linesize_align[0], linesize_align[3]);
linesize_align[1] <<= chroma_shift;
linesize_align[2] <<= chroma_shift;
align = FFMAX3(align, linesize_align[1], linesize_align[2]);
*width = FFALIGN(*width, align);
}
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
{
if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
return AVERROR(EINVAL);
pos--;
*xpos = (pos&1) * 128;
*ypos = ((pos>>1)^(pos<4)) * 128;
return 0;
}
enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
{
int pos, xout, yout;
for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
return pos;
}
return AVCHROMA_LOC_UNSPECIFIED;
}
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align)
{
int ch, planar, needed_size, ret = 0;
needed_size = av_samples_get_buffer_size(NULL, nb_channels,
frame->nb_samples, sample_fmt,
align);
if (buf_size < needed_size)
return AVERROR(EINVAL);
planar = av_sample_fmt_is_planar(sample_fmt);
if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
if (!(frame->extended_data = av_mallocz_array(nb_channels,
sizeof(*frame->extended_data))))
return AVERROR(ENOMEM);
} else {
frame->extended_data = frame->data;
}
if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
(uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
sample_fmt, align)) < 0) {
if (frame->extended_data != frame->data)
av_freep(&frame->extended_data);
return ret;
}
if (frame->extended_data != frame->data) {
for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
frame->data[ch] = frame->extended_data[ch];
}
return ret;
}
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
{
FramePool *pool = avctx->internal->pool;
int i, ret;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_VIDEO: {
uint8_t *data[4];
int linesize[4];
int size[4] = { 0 };
int w = frame->width;
int h = frame->height;
int tmpsize, unaligned;
if (pool->format == frame->format &&
pool->width == frame->width && pool->height == frame->height)
return 0;
avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
do {
// NOTE: do not align linesizes individually, this breaks e.g. assumptions
// that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
// increase alignment of w for next try (rhs gives the lowest bit set in w)
w += w & ~(w - 1);
unaligned = 0;
for (i = 0; i < 4; i++)
unaligned |= linesize[i] % pool->stride_align[i];
} while (unaligned);
tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
NULL, linesize);
if (tmpsize < 0)
return -1;
for (i = 0; i < 3 && data[i + 1]; i++)
size[i] = data[i + 1] - data[i];
size[i] = tmpsize - (data[i] - data[0]);
for (i = 0; i < 4; i++) {
av_buffer_pool_uninit(&pool->pools[i]);
pool->linesize[i] = linesize[i];
if (size[i]) {
pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
CONFIG_MEMORY_POISONING ?
NULL :
av_buffer_allocz);
if (!pool->pools[i]) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
}
pool->format = frame->format;
pool->width = frame->width;
pool->height = frame->height;
break;
}
case AVMEDIA_TYPE_AUDIO: {
int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
int planar = av_sample_fmt_is_planar(frame->format);
int planes = planar ? ch : 1;
if (pool->format == frame->format && pool->planes == planes &&
pool->channels == ch && frame->nb_samples == pool->samples)
return 0;
av_buffer_pool_uninit(&pool->pools[0]);
ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
frame->nb_samples, frame->format, 0);
if (ret < 0)
goto fail;
pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
if (!pool->pools[0]) {
ret = AVERROR(ENOMEM);
goto fail;
}
pool->format = frame->format;
pool->planes = planes;
pool->channels = ch;
pool->samples = frame->nb_samples;
break;
}
default: av_assert0(0);
}
return 0;
fail:
for (i = 0; i < 4; i++)
av_buffer_pool_uninit(&pool->pools[i]);
pool->format = -1;
pool->planes = pool->channels = pool->samples = 0;
pool->width = pool->height = 0;
return ret;
}
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
{
FramePool *pool = avctx->internal->pool;
int planes = pool->planes;
int i;
frame->linesize[0] = pool->linesize[0];
if (planes > AV_NUM_DATA_POINTERS) {
frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
sizeof(*frame->extended_buf));
if (!frame->extended_data || !frame->extended_buf) {
av_freep(&frame->extended_data);
av_freep(&frame->extended_buf);
return AVERROR(ENOMEM);
}
} else {
frame->extended_data = frame->data;
av_assert0(frame->nb_extended_buf == 0);
}
for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
if (!frame->buf[i])
goto fail;
frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
}
for (i = 0; i < frame->nb_extended_buf; i++) {
frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
if (!frame->extended_buf[i])
goto fail;
frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
}
if (avctx->debug & FF_DEBUG_BUFFERS)
av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
return 0;
fail:
av_frame_unref(frame);
return AVERROR(ENOMEM);
}
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
{
FramePool *pool = s->internal->pool;
int i;
if (pic->data[0]) {
av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
return -1;
}
memset(pic->data, 0, sizeof(pic->data));
pic->extended_data = pic->data;
for (i = 0; i < 4 && pool->pools[i]; i++) {
pic->linesize[i] = pool->linesize[i];
pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
if (!pic->buf[i])
goto fail;
pic->data[i] = pic->buf[i]->data;
}
for (; i < AV_NUM_DATA_POINTERS; i++) {
pic->data[i] = NULL;
pic->linesize[i] = 0;
}
if (pic->data[1] && !pic->data[2])
avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
if (s->debug & FF_DEBUG_BUFFERS)
av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
return 0;
fail:
av_frame_unref(pic);
return AVERROR(ENOMEM);
}
void ff_color_frame(AVFrame *frame, const int c[4])
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
int p, y, x;
av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
for (p = 0; p<desc->nb_components; p++) {
uint8_t *dst = frame->data[p];
int is_chroma = p == 1 || p == 2;
int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
for (y = 0; y < height; y++) {
if (desc->comp[0].depth >= 9) {
for (x = 0; x<bytes; x++)
((uint16_t*)dst)[x] = c[p];
}else
memset(dst, c[p], bytes);
dst += frame->linesize[p];
}
}
}
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
{
int ret;
if ((ret = update_frame_pool(avctx, frame)) < 0)
return ret;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
return video_get_buffer(avctx, frame);
case AVMEDIA_TYPE_AUDIO:
return audio_get_buffer(avctx, frame);
default:
return -1;
}
}
static int add_metadata_from_side_data(AVPacket *avpkt, AVFrame *frame)
{
int size;
const uint8_t *side_metadata;
AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
side_metadata = av_packet_get_side_data(avpkt,
AV_PKT_DATA_STRINGS_METADATA, &size);
return av_packet_unpack_dictionary(side_metadata, size, frame_md);
}
int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
{
AVPacket *pkt = avctx->internal->pkt;
int i;
static const struct {
enum AVPacketSideDataType packet;
enum AVFrameSideDataType frame;
} sd[] = {
{ AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
{ AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
{ AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
{ AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
};
if (pkt) {
frame->pkt_pts = pkt->pts;
av_frame_set_pkt_pos (frame, pkt->pos);
av_frame_set_pkt_duration(frame, pkt->duration);
av_frame_set_pkt_size (frame, pkt->size);
for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
int size;
uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
if (packet_sd) {
AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
sd[i].frame,
size);
if (!frame_sd)
return AVERROR(ENOMEM);
memcpy(frame_sd->data, packet_sd, size);
}
}
add_metadata_from_side_data(pkt, frame);
} else {
frame->pkt_pts = AV_NOPTS_VALUE;
av_frame_set_pkt_pos (frame, -1);
av_frame_set_pkt_duration(frame, 0);
av_frame_set_pkt_size (frame, -1);
}
frame->reordered_opaque = avctx->reordered_opaque;
if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
frame->color_primaries = avctx->color_primaries;
if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
frame->color_trc = avctx->color_trc;
if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
av_frame_set_colorspace(frame, avctx->colorspace);
if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
av_frame_set_color_range(frame, avctx->color_range);
if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
frame->chroma_location = avctx->chroma_sample_location;
switch (avctx->codec->type) {
case AVMEDIA_TYPE_VIDEO:
frame->format = avctx->pix_fmt;
if (!frame->sample_aspect_ratio.num)
frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
if (frame->width && frame->height &&
av_image_check_sar(frame->width, frame->height,
frame->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
frame->sample_aspect_ratio.num,
frame->sample_aspect_ratio.den);
frame->sample_aspect_ratio = (AVRational){ 0, 1 };
}
break;
case AVMEDIA_TYPE_AUDIO:
if (!frame->sample_rate)
frame->sample_rate = avctx->sample_rate;
if (frame->format < 0)
frame->format = avctx->sample_fmt;
if (!frame->channel_layout) {
if (avctx->channel_layout) {
if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
avctx->channels) {
av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
"configuration.\n");
return AVERROR(EINVAL);
}
frame->channel_layout = avctx->channel_layout;
} else {
if (avctx->channels > FF_SANE_NB_CHANNELS) {
av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
avctx->channels);
return AVERROR(ENOSYS);
}
}
}
av_frame_set_channels(frame, avctx->channels);
break;
}
return 0;
}
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
{
return ff_init_buffer_info(avctx, frame);
}
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
{
const AVHWAccel *hwaccel = avctx->hwaccel;
int override_dimensions = 1;
int ret;
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
return AVERROR(EINVAL);
}
}
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
if (frame->width <= 0 || frame->height <= 0) {
frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
override_dimensions = 0;
}
}
ret = ff_decode_frame_props(avctx, frame);
if (ret < 0)
return ret;
if (hwaccel) {
if (hwaccel->alloc_frame) {
ret = hwaccel->alloc_frame(avctx, frame);
goto end;
}
} else
avctx->sw_pix_fmt = avctx->pix_fmt;
ret = avctx->get_buffer2(avctx, frame, flags);
end:
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
frame->width = avctx->width;
frame->height = avctx->height;
}
return ret;
}
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
{
int ret = get_buffer_internal(avctx, frame, flags);
if (ret < 0)
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
{
AVFrame *tmp;
int ret;
av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
av_frame_unref(frame);
}
ff_init_buffer_info(avctx, frame);
if (!frame->data[0])
return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
if (av_frame_is_writable(frame))
return ff_decode_frame_props(avctx, frame);
tmp = av_frame_alloc();
if (!tmp)
return AVERROR(ENOMEM);
av_frame_move_ref(tmp, frame);
ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
if (ret < 0) {
av_frame_free(&tmp);
return ret;
}
av_frame_copy(frame, tmp);
av_frame_free(&tmp);
return 0;
}
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
{
int ret = reget_buffer_internal(avctx, frame);
if (ret < 0)
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return ret;
}
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, (char *)arg + i * size);
if (ret)
ret[i] = r;
}
return 0;
}
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, arg, i, 0);
if (ret)
ret[i] = r;
}
return 0;
}
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return AV_PIX_FMT_NONE;
}
static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
}
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
{
while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
++fmt;
return fmt[0];
}
static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
enum AVPixelFormat pix_fmt)
{
AVHWAccel *hwaccel = NULL;
while ((hwaccel = av_hwaccel_next(hwaccel)))
if (hwaccel->id == codec_id
&& hwaccel->pix_fmt == pix_fmt)
return hwaccel;
return NULL;
}
static int setup_hwaccel(AVCodecContext *avctx,
const enum AVPixelFormat fmt,
const char *name)
{
AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
int ret = 0;
if (avctx->active_thread_type & FF_THREAD_FRAME) {
av_log(avctx, AV_LOG_ERROR,
"Hardware accelerated decoding with frame threading is not supported.\n");
return AVERROR(EINVAL);
}
if (!hwa) {
av_log(avctx, AV_LOG_ERROR,
"Could not find an AVHWAccel for the pixel format: %s",
name);
return AVERROR(ENOENT);
}
if (hwa->capabilities & HWACCEL_CODEC_CAP_EXPERIMENTAL &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
hwa->name);
return AVERROR_PATCHWELCOME;
}
if (hwa->priv_data_size) {
avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
if (!avctx->internal->hwaccel_priv_data)
return AVERROR(ENOMEM);
}
if (hwa->init) {
ret = hwa->init(avctx);
if (ret < 0) {
av_freep(&avctx->internal->hwaccel_priv_data);
return ret;
}
}
avctx->hwaccel = hwa;
return 0;
}
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
{
const AVPixFmtDescriptor *desc;
enum AVPixelFormat *choices;
enum AVPixelFormat ret;
unsigned n = 0;
while (fmt[n] != AV_PIX_FMT_NONE)
++n;
av_assert0(n >= 1);
avctx->sw_pix_fmt = fmt[n - 1];
av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
choices = av_malloc_array(n + 1, sizeof(*choices));
if (!choices)
return AV_PIX_FMT_NONE;
memcpy(choices, fmt, (n + 1) * sizeof(*choices));
for (;;) {
if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avctx->internal->hwaccel_priv_data);
avctx->hwaccel = NULL;
ret = avctx->get_format(avctx, choices);
desc = av_pix_fmt_desc_get(ret);
if (!desc) {
ret = AV_PIX_FMT_NONE;
break;
}
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
break;
#if FF_API_CAP_VDPAU
if (avctx->codec->capabilities&AV_CODEC_CAP_HWACCEL_VDPAU)
break;
#endif
if (!setup_hwaccel(avctx, ret, desc->name))
break;
/* Remove failed hwaccel from choices */
for (n = 0; choices[n] != ret; n++)
av_assert0(choices[n] != AV_PIX_FMT_NONE);
do
choices[n] = choices[n + 1];
while (choices[n++] != AV_PIX_FMT_NONE);
}
av_freep(&choices);
return ret;
}
MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
{
return codec->properties;
}
int av_codec_get_max_lowres(const AVCodec *codec)
{
return codec->max_lowres;
}
static void get_subtitle_defaults(AVSubtitle *sub)
{
memset(sub, 0, sizeof(*sub));
sub->pts = AV_NOPTS_VALUE;
}
static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;
int bits_per_sample;
switch (ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
ff_unlock_avcodec(codec);
ret = avcodec_open2(avctx, codec, options);
ff_lock_avcodec(avctx, codec);
return ret;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
AVDictionary *tmp = NULL;
if (avcodec_is_open(avctx))
return 0;
if ((!codec && !avctx->codec)) {
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
return AVERROR(EINVAL);
}
if ((codec && avctx->codec && codec != avctx->codec)) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
if (options)
av_dict_copy(&tmp, *options, 0);
ret = ff_lock_avcodec(avctx, codec);
if (ret < 0)
return ret;
avctx->internal = av_mallocz(sizeof(AVCodecInternal));
if (!avctx->internal) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
if (!avctx->internal->pool) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->to_free = av_frame_alloc();
if (!avctx->internal->to_free) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
if (codec->priv_data_size > 0) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec->priv_data_size);
if (!avctx->priv_data) {
ret = AVERROR(ENOMEM);
goto end;
}
if (codec->priv_class) {
*(const AVClass **)avctx->priv_data = codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;
if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
ret = AVERROR(EINVAL);
goto free_and_end;
}
// only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
if (avctx->coded_width && avctx->coded_height)
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto free_and_end;
}
if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
&& ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
|| av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
ff_set_dimensions(avctx, 0, 0);
}
if (avctx->width > 0 && avctx->height > 0) {
if (av_image_check_sar(avctx->width, avctx->height,
avctx->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
}
}
/* if the decoder init function was already called previously,
* free the already allocated subtitle_header before overwriting it */
if (av_codec_is_decoder(codec))
av_freep(&avctx->subtitle_header);
if (avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
AVCodec *codec2;
av_log(avctx, AV_LOG_ERROR,
"The %s '%s' is experimental but experimental codecs are not enabled, "
"add '-strict %d' if you want to use it.\n",
codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
codec_string, codec2->name);
ret = AVERROR_EXPERIMENTAL;
goto free_and_end;
}
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
(!avctx->time_base.num || !avctx->time_base.den)) {
avctx->time_base.num = 1;
avctx->time_base.den = avctx->sample_rate;
}
if (!HAVE_THREADS)
av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
if (CONFIG_FRAME_THREAD_ENCODER) {
ff_unlock_avcodec(codec); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
ff_lock_avcodec(avctx, codec);
if (ret < 0)
goto free_and_end;
}
if (HAVE_THREADS
&& !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
ret = ff_thread_init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
avctx->thread_count = 1;
if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
avctx->codec->max_lowres);
ret = AVERROR(EINVAL);
goto free_and_end;
}
#if FF_API_VISMV
if (avctx->debug_mv)
av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
"see the codecview filter instead.\n");
#endif
if (av_codec_is_encoder(avctx->codec)) {
int i;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (avctx->codec->sample_fmts) {
for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
break;
if (avctx->channels == 1 &&
av_get_planar_sample_fmt(avctx->sample_fmt) ==
av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
avctx->sample_fmt = avctx->codec->sample_fmts[i];
break;
}
}
if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->codec->pix_fmts) {
for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
break;
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
&& !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
&& avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
avctx->color_range = AVCOL_RANGE_JPEG;
}
if (avctx->codec->supported_samplerates) {
for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
break;
if (avctx->codec->supported_samplerates[i] == 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->channel_layouts) {
if (!avctx->channel_layout) {
av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
} else {
for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
if (avctx->channel_layout == avctx->codec->channel_layouts[i])
break;
if (avctx->codec->channel_layouts[i] == 0) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
}
if (avctx->channel_layout && avctx->channels) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR,
"Channel layout '%s' with %d channels does not match number of specified channels %d\n",
buf, channels, avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
} else if (avctx->channel_layout) {
avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
}
if (avctx->channels < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
if (avctx->width <= 0 || avctx->height <= 0) {
av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
&& avctx->bit_rate>0 && avctx->bit_rate<1000) {
av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", (int64_t)avctx->bit_rate, (int64_t)avctx->bit_rate);
}
if (!avctx->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
}
avctx->pts_correction_num_faulty_pts =
avctx->pts_correction_num_faulty_dts = 0;
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
&& avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
av_log(avctx, AV_LOG_WARNING,
"gray decoding requested but not enabled at configuration time\n");
if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|| avctx->internal->frame_thread_encoder)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
ret=0;
#if FF_API_AUDIOENC_DELAY
if (av_codec_is_encoder(avctx->codec))
avctx->delay = avctx->initial_padding;
#endif
if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sub_charenc) {
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
"supported with subtitles codecs\n");
ret = AVERROR(EINVAL);
goto free_and_end;
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
"subtitles character encoding will be ignored\n",
avctx->codec_descriptor->name);
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
} else {
/* input character encoding is set for a text based subtitle
* codec at this point */
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
#if CONFIG_ICONV
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
if (cd == (iconv_t)-1) {
ret = AVERROR(errno);
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
"with input character encoding \"%s\"\n", avctx->sub_charenc);
goto free_and_end;
}
iconv_close(cd);
#else
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
"conversion needs a libavcodec built with iconv support "
"for this codec\n");
ret = AVERROR(ENOSYS);
goto free_and_end;
#endif
}
}
}
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}
end:
ff_unlock_avcodec(codec);
if (options) {
av_dict_free(options);
*options = tmp;
}
return ret;
free_and_end:
if (avctx->codec &&
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
avctx->codec->close(avctx);
if (codec->priv_class && codec->priv_data_size)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_dict_free(&tmp);
av_freep(&avctx->priv_data);
if (avctx->internal) {
av_frame_free(&avctx->internal->to_free);
av_freep(&avctx->internal->pool);
}
av_freep(&avctx->internal);
avctx->codec = NULL;
goto end;
}
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
{
if (avpkt->size < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
return AVERROR(EINVAL);
}
if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
return AVERROR(EINVAL);
}
if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
if (!avpkt->data || avpkt->size < size) {
av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
avpkt->data = avctx->internal->byte_buffer;
avpkt->size = avctx->internal->byte_buffer_size;
}
}
if (avpkt->data) {
AVBufferRef *buf = avpkt->buf;
if (avpkt->size < size) {
av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
return AVERROR(EINVAL);
}
av_init_packet(avpkt);
avpkt->buf = buf;
avpkt->size = size;
return 0;
} else {
int ret = av_new_packet(avpkt, size);
if (ret < 0)
av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
return ret;
}
}
int ff_alloc_packet(AVPacket *avpkt, int size)
{
return ff_alloc_packet2(NULL, avpkt, size, 0);
}
/**
* Pad last frame with silence.
*/
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
{
AVFrame *frame = NULL;
int ret;
if (!(frame = av_frame_alloc()))
return AVERROR(ENOMEM);
frame->format = src->format;
frame->channel_layout = src->channel_layout;
av_frame_set_channels(frame, av_frame_get_channels(src));
frame->nb_samples = s->frame_size;
ret = av_frame_get_buffer(frame, 32);
if (ret < 0)
goto fail;
ret = av_frame_copy_props(frame, src);
if (ret < 0)
goto fail;
if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
src->nb_samples, s->channels, s->sample_fmt)) < 0)
goto fail;
if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
frame->nb_samples - src->nb_samples,
s->channels, s->sample_fmt)) < 0)
goto fail;
*dst = frame;
return 0;
fail:
av_frame_free(&frame);
return ret;
}
int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
AVPacket *avpkt,
const AVFrame *frame,
int *got_packet_ptr)
{
AVFrame *extended_frame = NULL;
AVFrame *padded_frame = NULL;
int ret;
AVPacket user_pkt = *avpkt;
int needs_realloc = !user_pkt.data;
*got_packet_ptr = 0;
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
av_free_packet(avpkt);
av_init_packet(avpkt);
return 0;
}
/* ensure that extended_data is properly set */
if (frame && !frame->extended_data) {
if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
avctx->channels > AV_NUM_DATA_POINTERS) {
av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
"with more than %d channels, but extended_data is not set.\n",
AV_NUM_DATA_POINTERS);
return AVERROR(EINVAL);
}
av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
extended_frame = av_frame_alloc();
if (!extended_frame)
return AVERROR(ENOMEM);
memcpy(extended_frame, frame, sizeof(AVFrame));
extended_frame->extended_data = extended_frame->data;
frame = extended_frame;
}
/* extract audio service type metadata */
if (frame) {
AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
if (sd && sd->size >= sizeof(enum AVAudioServiceType))
avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
}
/* check for valid frame size */
if (frame) {
if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
if (frame->nb_samples > avctx->frame_size) {
av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
ret = AVERROR(EINVAL);
goto end;
}
} else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
if (frame->nb_samples < avctx->frame_size &&
!avctx->internal->last_audio_frame) {
ret = pad_last_frame(avctx, &padded_frame, frame);
if (ret < 0)
goto end;
frame = padded_frame;
avctx->internal->last_audio_frame = 1;
}
if (frame->nb_samples != avctx->frame_size) {
av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
ret = AVERROR(EINVAL);
goto end;
}
}
}
av_assert0(avctx->codec->encode2);
ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
if (!ret) {
if (*got_packet_ptr) {
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
if (avpkt->pts == AV_NOPTS_VALUE)
avpkt->pts = frame->pts;
if (!avpkt->duration)
avpkt->duration = ff_samples_to_time_base(avctx,
frame->nb_samples);
}
avpkt->dts = avpkt->pts;
} else {
avpkt->size = 0;
}
}
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
needs_realloc = 0;
if (user_pkt.data) {
if (user_pkt.size >= avpkt->size) {
memcpy(user_pkt.data, avpkt->data, avpkt->size);
} else {
av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
avpkt->size = user_pkt.size;
ret = -1;
}
avpkt->buf = user_pkt.buf;
avpkt->data = user_pkt.data;
} else {
if (av_dup_packet(avpkt) < 0) {
ret = AVERROR(ENOMEM);
}
}
}
if (!ret) {
if (needs_realloc && avpkt->data) {
ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
if (ret >= 0)
avpkt->data = avpkt->buf->data;
}
avctx->frame_number++;
}
if (ret < 0 || !*got_packet_ptr) {
av_free_packet(avpkt);
av_init_packet(avpkt);
goto end;
}
/* NOTE: if we add any audio encoders which output non-keyframe packets,
* this needs to be moved to the encoders, but for now we can do it
* here to simplify things */
avpkt->flags |= AV_PKT_FLAG_KEY;
end:
av_frame_free(&padded_frame);
av_free(extended_frame);
#if FF_API_AUDIOENC_DELAY
avctx->delay = avctx->initial_padding;
#endif
return ret;
}
int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
AVPacket *avpkt,
const AVFrame *frame,
int *got_packet_ptr)
{
int ret;
AVPacket user_pkt = *avpkt;
int needs_realloc = !user_pkt.data;
*got_packet_ptr = 0;
if(CONFIG_FRAME_THREAD_ENCODER &&
avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
avctx->stats_out[0] = '\0';
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
av_free_packet(avpkt);
av_init_packet(avpkt);
avpkt->size = 0;
return 0;
}
if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
return AVERROR(EINVAL);
if (frame && frame->format == AV_PIX_FMT_NONE)
av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
if (frame && (frame->width == 0 || frame->height == 0))
av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
av_assert0(avctx->codec->encode2);
ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
av_assert0(ret <= 0);
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
needs_realloc = 0;
if (user_pkt.data) {
if (user_pkt.size >= avpkt->size) {
memcpy(user_pkt.data, avpkt->data, avpkt->size);
} else {
av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
avpkt->size = user_pkt.size;
ret = -1;
}
avpkt->buf = user_pkt.buf;
avpkt->data = user_pkt.data;
} else {
if (av_dup_packet(avpkt) < 0) {
ret = AVERROR(ENOMEM);
}
}
}
if (!ret) {
if (!*got_packet_ptr)
avpkt->size = 0;
else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
avpkt->pts = avpkt->dts = frame->pts;
if (needs_realloc && avpkt->data) {
ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
if (ret >= 0)
avpkt->data = avpkt->buf->data;
}
avctx->frame_number++;
}
if (ret < 0 || !*got_packet_ptr)
av_free_packet(avpkt);
emms_c();
return ret;
}
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVSubtitle *sub)
{
int ret;
if (sub->start_display_time) {
av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
return -1;
}
ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
avctx->frame_number++;
return ret;
}
/**
* Attempt to guess proper monotonic timestamps for decoded video frames
* which might have incorrect times. Input timestamps may wrap around, in
* which case the output will as well.
*
* @param pts the pts field of the decoded AVPacket, as passed through
* AVFrame.pkt_pts
* @param dts the dts field of the decoded AVPacket
* @return one of the input values, may be AV_NOPTS_VALUE
*/
static int64_t guess_correct_pts(AVCodecContext *ctx,
int64_t reordered_pts, int64_t dts)
{
int64_t pts = AV_NOPTS_VALUE;
if (dts != AV_NOPTS_VALUE) {
ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
ctx->pts_correction_last_dts = dts;
} else if (reordered_pts != AV_NOPTS_VALUE)
ctx->pts_correction_last_dts = reordered_pts;
if (reordered_pts != AV_NOPTS_VALUE) {
ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
ctx->pts_correction_last_pts = reordered_pts;
} else if(dts != AV_NOPTS_VALUE)
ctx->pts_correction_last_pts = dts;
if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
&& reordered_pts != AV_NOPTS_VALUE)
pts = reordered_pts;
else
pts = dts;
return pts;
}
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
{
int size = 0, ret;
const uint8_t *data;
uint32_t flags;
int64_t val;
data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
if (!data)
return 0;
if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
"changes, but PARAM_CHANGE side data was sent to it.\n");
return AVERROR(EINVAL);
}
if (size < 4)
goto fail;
flags = bytestream_get_le32(&data);
size -= 4;
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
if (size < 4)
goto fail;
val = bytestream_get_le32(&data);
if (val <= 0 || val > INT_MAX) {
av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
return AVERROR_INVALIDDATA;
}
avctx->channels = val;
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
if (size < 8)
goto fail;
avctx->channel_layout = bytestream_get_le64(&data);
size -= 8;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
if (size < 4)
goto fail;
val = bytestream_get_le32(&data);
if (val <= 0 || val > INT_MAX) {
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
return AVERROR_INVALIDDATA;
}
avctx->sample_rate = val;
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
if (size < 8)
goto fail;
avctx->width = bytestream_get_le32(&data);
avctx->height = bytestream_get_le32(&data);
size -= 8;
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
return ret;
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
return AVERROR_INVALIDDATA;
}
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
{
int ret;
/* move the original frame to our backup */
av_frame_unref(avci->to_free);
av_frame_move_ref(avci->to_free, frame);
/* now copy everything except the AVBufferRefs back
* note that we make a COPY of the side data, so calling av_frame_free() on
* the caller's frame will work properly */
ret = av_frame_copy_props(frame, avci->to_free);
if (ret < 0)
return ret;
memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
if (avci->to_free->extended_data != avci->to_free->data) {
int planes = av_frame_get_channels(avci->to_free);
int size = planes * sizeof(*frame->extended_data);
if (!size) {
av_frame_unref(frame);
return AVERROR_BUG;
}
frame->extended_data = av_malloc(size);
if (!frame->extended_data) {
av_frame_unref(frame);
return AVERROR(ENOMEM);
}
memcpy(frame->extended_data, avci->to_free->extended_data,
size);
} else
frame->extended_data = frame->data;
frame->format = avci->to_free->format;
frame->width = avci->to_free->width;
frame->height = avci->to_free->height;
frame->channel_layout = avci->to_free->channel_layout;
frame->nb_samples = avci->to_free->nb_samples;
av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
return 0;
}
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
int *got_picture_ptr,
const AVPacket *avpkt)
{
AVCodecInternal *avci = avctx->internal;
int ret;
// copy to ensure we do not change avpkt
AVPacket tmp = *avpkt;
if (!avctx->codec)
return AVERROR(EINVAL);
if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
return AVERROR(EINVAL);
}
*got_picture_ptr = 0;
if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
return AVERROR(EINVAL);
av_frame_unref(picture);
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
(avctx->active_thread_type & FF_THREAD_FRAME)) {
int did_split = av_packet_split_side_data(&tmp);
ret = apply_param_change(avctx, &tmp);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
goto fail;
}
avctx->internal->pkt = &tmp;
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
&tmp);
else {
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
&tmp);
if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
picture->pkt_dts = avpkt->dts;
if(!avctx->has_b_frames){
av_frame_set_pkt_pos(picture, avpkt->pos);
}
//FIXME these should be under if(!avctx->has_b_frames)
/* get_buffer is supposed to set frame parameters */
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
if (!picture->width) picture->width = avctx->width;
if (!picture->height) picture->height = avctx->height;
if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
}
}
fail:
emms_c(); //needed to avoid an emms_c() call before every return;
avctx->internal->pkt = NULL;
if (did_split) {
av_packet_free_side_data(&tmp);
if(ret == tmp.size)
ret = avpkt->size;
}
if (*got_picture_ptr) {
if (!avctx->refcounted_frames) {
int err = unrefcount_frame(avci, picture);
if (err < 0)
return err;
}
avctx->frame_number++;
av_frame_set_best_effort_timestamp(picture,
guess_correct_pts(avctx,
picture->pkt_pts,
picture->pkt_dts));
} else
av_frame_unref(picture);
} else
ret = 0;
/* many decoders assign whole AVFrames, thus overwriting extended_data;
* make sure it's set correctly */
av_assert0(!picture->extended_data || picture->extended_data == picture->data);
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
return ret;
}
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
AVFrame *frame,
int *got_frame_ptr,
const AVPacket *avpkt)
{
AVCodecInternal *avci = avctx->internal;
int ret = 0;
*got_frame_ptr = 0;
if (!avpkt->data && avpkt->size) {
av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
return AVERROR(EINVAL);
}
if (!avctx->codec)
return AVERROR(EINVAL);
if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
return AVERROR(EINVAL);
}
av_frame_unref(frame);
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
uint8_t *side;
int side_size;
uint32_t discard_padding = 0;
uint8_t skip_reason = 0;
uint8_t discard_reason = 0;
// copy to ensure we do not change avpkt
AVPacket tmp = *avpkt;
int did_split = av_packet_split_side_data(&tmp);
ret = apply_param_change(avctx, &tmp);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
goto fail;
}
avctx->internal->pkt = &tmp;
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
else {
ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
av_assert0(ret <= tmp.size);
frame->pkt_dts = avpkt->dts;
}
if (ret >= 0 && *got_frame_ptr) {
avctx->frame_number++;
av_frame_set_best_effort_timestamp(frame,
guess_correct_pts(avctx,
frame->pkt_pts,
frame->pkt_dts));
if (frame->format == AV_SAMPLE_FMT_NONE)
frame->format = avctx->sample_fmt;
if (!frame->channel_layout)
frame->channel_layout = avctx->channel_layout;
if (!av_frame_get_channels(frame))
av_frame_set_channels(frame, avctx->channels);
if (!frame->sample_rate)
frame->sample_rate = avctx->sample_rate;
}
side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
if(side && side_size>=10) {
avctx->internal->skip_samples = AV_RL32(side);
discard_padding = AV_RL32(side + 4);
av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
avctx->internal->skip_samples, (int)discard_padding);
skip_reason = AV_RL8(side + 8);
discard_reason = AV_RL8(side + 9);
}
if (avctx->internal->skip_samples && *got_frame_ptr &&
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
if(frame->nb_samples <= avctx->internal->skip_samples){
*got_frame_ptr = 0;
avctx->internal->skip_samples -= frame->nb_samples;
av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
avctx->internal->skip_samples);
} else {
av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
if(avctx->pkt_timebase.num && avctx->sample_rate) {
int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
(AVRational){1, avctx->sample_rate},
avctx->pkt_timebase);
if(frame->pkt_pts!=AV_NOPTS_VALUE)
frame->pkt_pts += diff_ts;
if(frame->pkt_dts!=AV_NOPTS_VALUE)
frame->pkt_dts += diff_ts;
if (av_frame_get_pkt_duration(frame) >= diff_ts)
av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
} else {
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
}
av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
avctx->internal->skip_samples, frame->nb_samples);
frame->nb_samples -= avctx->internal->skip_samples;
avctx->internal->skip_samples = 0;
}
}
if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
if (discard_padding == frame->nb_samples) {
*got_frame_ptr = 0;
} else {
if(avctx->pkt_timebase.num && avctx->sample_rate) {
int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
(AVRational){1, avctx->sample_rate},
avctx->pkt_timebase);
if (av_frame_get_pkt_duration(frame) >= diff_ts)
av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
} else {
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
}
av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
(int)discard_padding, frame->nb_samples);
frame->nb_samples -= discard_padding;
}
}
if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
if (fside) {
AV_WL32(fside->data, avctx->internal->skip_samples);
AV_WL32(fside->data + 4, discard_padding);
AV_WL8(fside->data + 8, skip_reason);
AV_WL8(fside->data + 9, discard_reason);
avctx->internal->skip_samples = 0;
}
}
fail:
avctx->internal->pkt = NULL;
if (did_split) {
av_packet_free_side_data(&tmp);
if(ret == tmp.size)
ret = avpkt->size;
}
if (ret >= 0 && *got_frame_ptr) {
if (!avctx->refcounted_frames) {
int err = unrefcount_frame(avci, frame);
if (err < 0)
return err;
}
} else
av_frame_unref(frame);
}
return ret;
}
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
static int recode_subtitle(AVCodecContext *avctx,
AVPacket *outpkt, const AVPacket *inpkt)
{
#if CONFIG_ICONV
iconv_t cd = (iconv_t)-1;
int ret = 0;
char *inb, *outb;
size_t inl, outl;
AVPacket tmp;
#endif
if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
return 0;
#if CONFIG_ICONV
cd = iconv_open("UTF-8", avctx->sub_charenc);
av_assert0(cd != (iconv_t)-1);
inb = inpkt->data;
inl = inpkt->size;
if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
ret = AVERROR(ENOMEM);
goto end;
}
ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
if (ret < 0)
goto end;
outpkt->buf = tmp.buf;
outpkt->data = tmp.data;
outpkt->size = tmp.size;
outb = outpkt->data;
outl = outpkt->size;
if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
outl >= outpkt->size || inl != 0) {
ret = FFMIN(AVERROR(errno), -1);
av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
"from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
av_free_packet(&tmp);
goto end;
}
outpkt->size -= outl;
memset(outpkt->data + outpkt->size, 0, outl);
end:
if (cd != (iconv_t)-1)
iconv_close(cd);
return ret;
#else
av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
return AVERROR(EINVAL);
#endif
}
static int utf8_check(const uint8_t *str)
{
const uint8_t *byte;
uint32_t codepoint, min;
while (*str) {
byte = str;
GET_UTF8(codepoint, *(byte++), return 0;);
min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
1 << (5 * (byte - str) - 4);
if (codepoint < min || codepoint >= 0x110000 ||
codepoint == 0xFFFE /* BOM */ ||
codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
return 0;
str = byte;
}
return 1;
}
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
int *got_sub_ptr,
AVPacket *avpkt)
{
int i, ret = 0;
if (!avpkt->data && avpkt->size) {
av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
return AVERROR(EINVAL);
}
if (!avctx->codec)
return AVERROR(EINVAL);
if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
return AVERROR(EINVAL);
}
*got_sub_ptr = 0;
get_subtitle_defaults(sub);
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
AVPacket pkt_recoded;
AVPacket tmp = *avpkt;
int did_split = av_packet_split_side_data(&tmp);
//apply_param_change(avctx, &tmp);
if (did_split) {
/* FFMIN() prevents overflow in case the packet wasn't allocated with
* proper padding.
* If the side data is smaller than the buffer padding size, the
* remaining bytes should have already been filled with zeros by the
* original packet allocation anyway. */
memset(tmp.data + tmp.size, 0,
FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
}
pkt_recoded = tmp;
ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
if (ret < 0) {
*got_sub_ptr = 0;
} else {
avctx->internal->pkt = &pkt_recoded;
if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
sub->pts = av_rescale_q(avpkt->pts,
avctx->pkt_timebase, AV_TIME_BASE_Q);
ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
av_assert1((ret >= 0) >= !!*got_sub_ptr &&
!!*got_sub_ptr >= !!sub->num_rects);
if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
avctx->pkt_timebase.num) {
AVRational ms = { 1, 1000 };
sub->end_display_time = av_rescale_q(avpkt->duration,
avctx->pkt_timebase, ms);
}
for (i = 0; i < sub->num_rects; i++) {
if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
av_log(avctx, AV_LOG_ERROR,
"Invalid UTF-8 in decoded subtitles text; "
"maybe missing -sub_charenc option\n");
avsubtitle_free(sub);
return AVERROR_INVALIDDATA;
}
}
if (tmp.data != pkt_recoded.data) { // did we recode?
/* prevent from destroying side data from original packet */
pkt_recoded.side_data = NULL;
pkt_recoded.side_data_elems = 0;
av_free_packet(&pkt_recoded);
}
if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
sub->format = 0;
else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
sub->format = 1;
avctx->internal->pkt = NULL;
}
if (did_split) {
av_packet_free_side_data(&tmp);
if(ret == tmp.size)
ret = avpkt->size;
}
if (*got_sub_ptr)
avctx->frame_number++;
}
return ret;
}
void avsubtitle_free(AVSubtitle *sub)
{
int i;
for (i = 0; i < sub->num_rects; i++) {
av_freep(&sub->rects[i]->data[0]);
av_freep(&sub->rects[i]->data[1]);
av_freep(&sub->rects[i]->data[2]);
av_freep(&sub->rects[i]->data[3]);
av_freep(&sub->rects[i]->text);
av_freep(&sub->rects[i]->ass);
av_freep(&sub->rects[i]);
}
av_freep(&sub->rects);
memset(sub, 0, sizeof(AVSubtitle));
}
av_cold int avcodec_close(AVCodecContext *avctx)
{
if (!avctx)
return 0;
if (avcodec_is_open(avctx)) {
FramePool *pool = avctx->internal->pool;
int i;
if (CONFIG_FRAME_THREAD_ENCODER &&
avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
ff_frame_thread_encoder_free(avctx);
}
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
avctx->internal->byte_buffer_size = 0;
av_freep(&avctx->internal->byte_buffer);
av_frame_free(&avctx->internal->to_free);
for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
av_buffer_pool_uninit(&pool->pools[i]);
av_freep(&avctx->internal->pool);
if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avctx->internal->hwaccel_priv_data);
av_freep(&avctx->internal);
}
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
av_freep(&avctx->priv_data);
if (av_codec_is_encoder(avctx->codec)) {
av_freep(&avctx->extradata);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
avctx->codec = NULL;
avctx->active_thread_type = 0;
return 0;
}
static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
{
switch(id){
//This is for future deprecatec codec ids, its empty since
//last major bump but will fill up again over time, please don't remove it
default : return id;
}
}
static AVCodec *find_encdec(enum AVCodecID id, int encoder)
{
AVCodec *p, *experimental = NULL;
p = first_avcodec;
id= remap_deprecated_codec_id(id);
while (p) {
if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
p->id == id) {
if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
experimental = p;
} else
return p;
}
p = p->next;
}
return experimental;
}
AVCodec *avcodec_find_encoder(enum AVCodecID id)
{
return find_encdec(id, 1);
}
AVCodec *avcodec_find_encoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
AVCodec *avcodec_find_decoder(enum AVCodecID id)
{
return find_encdec(id, 0);
}
AVCodec *avcodec_find_decoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
const char *avcodec_get_name(enum AVCodecID id)
{
const AVCodecDescriptor *cd;
AVCodec *codec;
if (id == AV_CODEC_ID_NONE)
return "none";
cd = avcodec_descriptor_get(id);
if (cd)
return cd->name;
av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
codec = avcodec_find_decoder(id);
if (codec)
return codec->name;
codec = avcodec_find_encoder(id);
if (codec)
return codec->name;
return "unknown_codec";
}
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
{
int i, len, ret = 0;
#define TAG_PRINT(x) \
(((x) >= '0' && (x) <= '9') || \
((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
for (i = 0; i < 4; i++) {
len = snprintf(buf, buf_size,
TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
buf += len;
buf_size = buf_size > len ? buf_size - len : 0;
ret += len;
codec_tag >>= 8;
}
return ret;
}
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_type;
const char *codec_name;
const char *profile = NULL;
const AVCodec *p;
int64_t bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
if (!buf || buf_size <= 0)
return;
codec_type = av_get_media_type_string(enc->codec_type);
codec_name = avcodec_get_name(enc->codec_id);
if (enc->profile != FF_PROFILE_UNKNOWN) {
if (enc->codec)
p = enc->codec;
else
p = encode ? avcodec_find_encoder(enc->codec_id) :
avcodec_find_decoder(enc->codec_id);
if (p)
profile = av_get_profile_name(p, enc->profile);
}
snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
codec_name);
buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
if (enc->codec && strcmp(enc->codec->name, codec_name))
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& av_log_get_level() >= AV_LOG_VERBOSE
&& enc->refs)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d reference frame%s",
enc->refs, enc->refs > 1 ? "s" : "");
if (enc->codec_tag) {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%s / 0x%04X)", tag_buf, enc->codec_tag);
}
switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
{
char detail[256] = "(";
av_strlcat(buf, separator, buf_size);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
av_get_pix_fmt_name(enc->pix_fmt));
if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_color_range_name(enc->color_range));
if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
if (enc->colorspace != (int)enc->color_primaries ||
enc->colorspace != (int)enc->color_trc) {
new_line = 1;
av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
av_color_space_name(enc->colorspace),
av_color_primaries_name(enc->color_primaries),
av_color_transfer_name(enc->color_trc));
} else
av_strlcatf(detail, sizeof(detail), "%s, ",
av_get_colorspace_name(enc->colorspace));
}
if (av_log_get_level() >= AV_LOG_DEBUG &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_chroma_location_name(enc->chroma_sample_location));
if (strlen(detail) > 1) {
detail[strlen(detail) - 2] = 0;
av_strlcatf(buf, buf_size, "%s)", detail);
}
}
if (enc->width) {
av_strlcat(buf, new_line ? separator : ", ", buf_size);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%dx%d",
enc->width, enc->height);
if (av_log_get_level() >= AV_LOG_VERBOSE &&
(enc->width != enc->coded_width ||
enc->height != enc->coded_height))
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%dx%d)", enc->coded_width, enc->coded_height);
if (enc->sample_aspect_ratio.num) {
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
enc->width * enc->sample_aspect_ratio.num,
enc->height * enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [SAR %d:%d DAR %d:%d]",
enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
display_aspect_ratio.num, display_aspect_ratio.den);
}
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
}
if (encode) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", q=%d-%d", enc->qmin, enc->qmax);
} else {
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", Closed Captions");
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", lossless");
}
break;
case AVMEDIA_TYPE_AUDIO:
av_strlcat(buf, separator, buf_size);
if (enc->sample_rate) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%d Hz, ", enc->sample_rate);
}
av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %s", av_get_sample_fmt_name(enc->sample_fmt));
}
if ( enc->bits_per_raw_sample > 0
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%d bit)", enc->bits_per_raw_sample);
break;
case AVMEDIA_TYPE_DATA:
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
if (g)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
break;
case AVMEDIA_TYPE_SUBTITLE:
if (enc->width)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %dx%d", enc->width, enc->height);
break;
default:
return;
}
if (encode) {
if (enc->flags & AV_CODEC_FLAG_PASS1)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 1");
if (enc->flags & AV_CODEC_FLAG_PASS2)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 2");
}
bitrate = get_bit_rate(enc);
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %"PRId64" kb/s", bitrate / 1000);
} else if (enc->rc_max_rate > 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
}
}
const char *av_get_profile_name(const AVCodec *codec, int profile)
{
const AVProfile *p;
if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
return NULL;
for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
if (p->profile == profile)
return p->name;
return NULL;
}
unsigned avcodec_version(void)
{
// av_assert0(AV_CODEC_ID_V410==164);
av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
av_assert0(AV_CODEC_ID_SRT==94216);
av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
return LIBAVCODEC_VERSION_INT;
}
const char *avcodec_configuration(void)
{
return FFMPEG_CONFIGURATION;
}
const char *avcodec_license(void)
{
#define LICENSE_PREFIX "libavcodec license: "
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
void avcodec_flush_buffers(AVCodecContext *avctx)
{
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ff_thread_flush(avctx);
else if (avctx->codec->flush)
avctx->codec->flush(avctx);
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if (!avctx->refcounted_frames)
av_frame_unref(avctx->internal->to_free);
}
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_8SVX_EXP:
case AV_CODEC_ID_8SVX_FIB:
case AV_CODEC_ID_ADPCM_CT:
case AV_CODEC_ID_ADPCM_IMA_APC:
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_ADPCM_YAMAHA:
return 4;
case AV_CODEC_ID_DSD_LSBF:
case AV_CODEC_ID_DSD_MSBF:
case AV_CODEC_ID_DSD_LSBF_PLANAR:
case AV_CODEC_ID_DSD_MSBF_PLANAR:
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S8_PLANAR:
case AV_CODEC_ID_PCM_U8:
case AV_CODEC_ID_PCM_ZORK:
case AV_CODEC_ID_SDX2_DPCM:
return 8;
case AV_CODEC_ID_PCM_S16BE:
case AV_CODEC_ID_PCM_S16BE_PLANAR:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_PCM_U16BE:
case AV_CODEC_ID_PCM_U16LE:
return 16;
case AV_CODEC_ID_PCM_S24DAUD:
case AV_CODEC_ID_PCM_S24BE:
case AV_CODEC_ID_PCM_S24LE:
case AV_CODEC_ID_PCM_S24LE_PLANAR:
case AV_CODEC_ID_PCM_U24BE:
case AV_CODEC_ID_PCM_U24LE:
return 24;
case AV_CODEC_ID_PCM_S32BE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S32LE_PLANAR:
case AV_CODEC_ID_PCM_U32BE:
case AV_CODEC_ID_PCM_U32LE:
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F32LE:
return 32;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F64LE:
return 64;
default:
return 0;
}
}
enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
{
static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
[AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
[AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
};
if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
return AV_CODEC_ID_NONE;
if (be < 0 || be > 1)
be = AV_NE(1, 0);
return map[fmt][be];
}
int av_get_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_ADPCM_SBPRO_2:
return 2;
case AV_CODEC_ID_ADPCM_SBPRO_3:
return 3;
case AV_CODEC_ID_ADPCM_SBPRO_4:
case AV_CODEC_ID_ADPCM_IMA_WAV:
case AV_CODEC_ID_ADPCM_IMA_QT:
case AV_CODEC_ID_ADPCM_SWF:
case AV_CODEC_ID_ADPCM_MS:
return 4;
default:
return av_get_exact_bits_per_sample(codec_id);
}
}
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
{
int id, sr, ch, ba, tag, bps;
id = avctx->codec_id;
sr = avctx->sample_rate;
ch = avctx->channels;
ba = avctx->block_align;
tag = avctx->codec_tag;
bps = av_get_exact_bits_per_sample(avctx->codec_id);
/* codecs with an exact constant bits per sample */
if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
return (frame_bytes * 8LL) / (bps * ch);
bps = avctx->bits_per_coded_sample;
/* codecs with a fixed packet duration */
switch (id) {
case AV_CODEC_ID_ADPCM_ADX: return 32;
case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
case AV_CODEC_ID_AMR_NB:
case AV_CODEC_ID_EVRC:
case AV_CODEC_ID_GSM:
case AV_CODEC_ID_QCELP:
case AV_CODEC_ID_RA_288: return 160;
case AV_CODEC_ID_AMR_WB:
case AV_CODEC_ID_GSM_MS: return 320;
case AV_CODEC_ID_MP1: return 384;
case AV_CODEC_ID_ATRAC1: return 512;
case AV_CODEC_ID_ATRAC3: return 1024;
case AV_CODEC_ID_ATRAC3P: return 2048;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MUSEPACK7: return 1152;
case AV_CODEC_ID_AC3: return 1536;
}
if (sr > 0) {
/* calc from sample rate */
if (id == AV_CODEC_ID_TTA)
return 256 * sr / 245;
if (ch > 0) {
/* calc from sample rate and channels */
if (id == AV_CODEC_ID_BINKAUDIO_DCT)
return (480 << (sr / 22050)) / ch;
}
}
if (ba > 0) {
/* calc from block_align */
if (id == AV_CODEC_ID_SIPR) {
switch (ba) {
case 20: return 160;
case 19: return 144;
case 29: return 288;
case 37: return 480;
}
} else if (id == AV_CODEC_ID_ILBC) {
switch (ba) {
case 38: return 160;
case 50: return 240;
}
}
}
if (frame_bytes > 0) {
/* calc from frame_bytes only */
if (id == AV_CODEC_ID_TRUESPEECH)
return 240 * (frame_bytes / 32);
if (id == AV_CODEC_ID_NELLYMOSER)
return 256 * (frame_bytes / 64);
if (id == AV_CODEC_ID_RA_144)
return 160 * (frame_bytes / 20);
if (id == AV_CODEC_ID_G723_1)
return 240 * (frame_bytes / 24);
if (bps > 0) {
/* calc from frame_bytes and bits_per_coded_sample */
if (id == AV_CODEC_ID_ADPCM_G726)
return frame_bytes * 8 / bps;
}
if (ch > 0) {
/* calc from frame_bytes and channels */
switch (id) {
case AV_CODEC_ID_ADPCM_AFC:
return frame_bytes / (9 * ch) * 16;
case AV_CODEC_ID_ADPCM_PSX:
case AV_CODEC_ID_ADPCM_DTK:
return frame_bytes / (16 * ch) * 28;
case AV_CODEC_ID_ADPCM_4XM:
case AV_CODEC_ID_ADPCM_IMA_ISS:
return (frame_bytes - 4 * ch) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
return (frame_bytes - 4) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_AMV:
return (frame_bytes - 8) * 2 / ch;
case AV_CODEC_ID_ADPCM_THP:
case AV_CODEC_ID_ADPCM_THP_LE:
if (avctx->extradata)
return frame_bytes * 14 / (8 * ch);
break;
case AV_CODEC_ID_ADPCM_XA:
return (frame_bytes / 128) * 224 / ch;
case AV_CODEC_ID_INTERPLAY_DPCM:
return (frame_bytes - 6 - ch) / ch;
case AV_CODEC_ID_ROQ_DPCM:
return (frame_bytes - 8) / ch;
case AV_CODEC_ID_XAN_DPCM:
return (frame_bytes - 2 * ch) / ch;
case AV_CODEC_ID_MACE3:
return 3 * frame_bytes / ch;
case AV_CODEC_ID_MACE6:
return 6 * frame_bytes / ch;
case AV_CODEC_ID_PCM_LXF:
return 2 * (frame_bytes / (5 * ch));
case AV_CODEC_ID_IAC:
case AV_CODEC_ID_IMC:
return 4 * frame_bytes / ch;
}
if (tag) {
/* calc from frame_bytes, channels, and codec_tag */
if (id == AV_CODEC_ID_SOL_DPCM) {
if (tag == 3)
return frame_bytes / ch;
else
return frame_bytes * 2 / ch;
}
}
if (ba > 0) {
/* calc from frame_bytes, channels, and block_align */
int blocks = frame_bytes / ba;
switch (avctx->codec_id) {
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (bps < 2 || bps > 5)
return 0;
return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
case AV_CODEC_ID_ADPCM_IMA_DK3:
return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
case AV_CODEC_ID_ADPCM_IMA_DK4:
return blocks * (1 + (ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_IMA_RAD:
return blocks * ((ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_MS:
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
}
}
if (bps > 0) {
/* calc from frame_bytes, channels, and bits_per_coded_sample */
switch (avctx->codec_id) {
case AV_CODEC_ID_PCM_DVD:
if(bps<4)
return 0;
return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
if(bps<4)
return 0;
return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
case AV_CODEC_ID_S302M:
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
}
}
}
}
/* Fall back on using frame_size */
if (avctx->frame_size > 1 && frame_bytes)
return avctx->frame_size;
//For WMA we currently have no other means to calculate duration thus we
//do it here by assuming CBR, which is true for all known cases.
if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
}
return 0;
}
#if !HAVE_THREADS
int ff_thread_init(AVCodecContext *s)
{
return -1;
}
#endif
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
{
unsigned int n = 0;
while (v >= 0xff) {
*s++ = 0xff;
v -= 0xff;
n++;
}
*s = v;
n++;
return n;
}
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
{
int i;
for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
return i;
}
#if FF_API_MISSING_SAMPLE
FF_DISABLE_DEPRECATION_WARNINGS
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
{
av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
"version to the newest one from Git. If the problem still "
"occurs, it means that your file has a feature which has not "
"been implemented.\n", feature);
if(want_sample)
av_log_ask_for_sample(avc, NULL);
}
void av_log_ask_for_sample(void *avc, const char *msg, ...)
{
va_list argument_list;
va_start(argument_list, msg);
if (msg)
av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
"of this file to ftp://upload.ffmpeg.org/incoming/ "
"and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
va_end(argument_list);
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_MISSING_SAMPLE */
static AVHWAccel *first_hwaccel = NULL;
static AVHWAccel **last_hwaccel = &first_hwaccel;
void av_register_hwaccel(AVHWAccel *hwaccel)
{
AVHWAccel **p = last_hwaccel;
hwaccel->next = NULL;
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
p = &(*p)->next;
last_hwaccel = &hwaccel->next;
}
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
{
return hwaccel ? hwaccel->next : first_hwaccel;
}
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
if (lockmgr_cb) {
// There is no good way to rollback a failure to destroy the
// mutex, so we ignore failures.
lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
lockmgr_cb = NULL;
codec_mutex = NULL;
avformat_mutex = NULL;
}
if (cb) {
void *new_codec_mutex = NULL;
void *new_avformat_mutex = NULL;
int err;
if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
return err > 0 ? AVERROR_UNKNOWN : err;
}
if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
// Ignore failures to destroy the newly created mutex.
cb(&new_codec_mutex, AV_LOCK_DESTROY);
return err > 0 ? AVERROR_UNKNOWN : err;
}
lockmgr_cb = cb;
codec_mutex = new_codec_mutex;
avformat_mutex = new_avformat_mutex;
}
return 0;
}
int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
return 0;
if (lockmgr_cb) {
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
return -1;
}
if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1) {
av_log(log_ctx, AV_LOG_ERROR,
"Insufficient thread locking. At least %d threads are "
"calling avcodec_open2() at the same time right now.\n",
entangled_thread_counter);
if (!lockmgr_cb)
av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
ff_avcodec_locked = 1;
ff_unlock_avcodec(codec);
return AVERROR(EINVAL);
}
av_assert0(!ff_avcodec_locked);
ff_avcodec_locked = 1;
return 0;
}
int ff_unlock_avcodec(const AVCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
return 0;
av_assert0(ff_avcodec_locked);
ff_avcodec_locked = 0;
avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
if (lockmgr_cb) {
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
return -1;
}
return 0;
}
int avpriv_lock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
return -1;
}
return 0;
}
int avpriv_unlock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
return -1;
}
return 0;
}
unsigned int avpriv_toupper4(unsigned int x)
{
return av_toupper(x & 0xFF) +
(av_toupper((x >> 8) & 0xFF) << 8) +
(av_toupper((x >> 16) & 0xFF) << 16) +
((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
}
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
{
int ret;
dst->owner = src->owner;
ret = av_frame_ref(dst->f, src->f);
if (ret < 0)
return ret;
av_assert0(!dst->progress);
if (src->progress &&
!(dst->progress = av_buffer_ref(src->progress))) {
ff_thread_release_buffer(dst->owner, dst);
return AVERROR(ENOMEM);
}
return 0;
}
#if !HAVE_THREADS
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
{
return ff_get_format(avctx, fmt);
}
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
{
f->owner = avctx;
return ff_get_buffer(avctx, f->f, flags);
}
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
{
if (f->f)
av_frame_unref(f->f);
}
void ff_thread_finish_setup(AVCodecContext *avctx)
{
}
void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
{
}
void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
{
}
int ff_thread_can_start_frame(AVCodecContext *avctx)
{
return 1;
}
int ff_alloc_entries(AVCodecContext *avctx, int count)
{
return 0;
}
void ff_reset_entries(AVCodecContext *avctx)
{
}
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
{
}
void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
{
}
#endif
int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}
int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
{
int ret;
char *str;
ret = av_bprint_finalize(buf, &str);
if (ret < 0)
return ret;
if (!av_bprint_is_complete(buf)) {
av_free(str);
return AVERROR(ENOMEM);
}
avctx->extradata = str;
/* Note: the string is NUL terminated (so extradata can be read as a
* string), but the ending character is not accounted in the size (in
* binary formats you are likely not supposed to mux that character). When
* extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
* zeros. */
avctx->extradata_size = buf->len;
return 0;
}
const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
const uint8_t *end,
uint32_t *av_restrict state)
{
int i;
av_assert0(p <= end);
if (p >= end)
return end;
for (i = 0; i < 3; i++) {
uint32_t tmp = *state << 8;
*state = tmp + *(p++);
if (tmp == 0x100 || p == end)
return p;
}
while (p < end) {
if (p[-1] > 1 ) p += 3;
else if (p[-2] ) p += 2;
else if (p[-3]|(p[-1]-1)) p++;
else {
p++;
break;
}
}
p = FFMIN(p, end) - 4;
*state = AV_RB32(p);
return p + 4;
}
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