b5da7d4c1a
* qatar/master: avformat: Drop pointless "format" from container long names swscale: bury one more piece of inline asm under HAVE_INLINE_ASM. wv: K&R formatting cosmetics configure: Add missing descriptions to help output h264_ps: declare array of colorspace strings on its own line. fate: amix: specify f32 sample format for comparison tiny_psnr: support 32-bit float samples eamad/eatgq/eatqi: call special EA IDCT directly eamad: remove use of MpegEncContext mpegvideo: remove unnecessary inclusions of faandct.h af_asyncts: avoid overflow in out_size with large delta values af_asyncts: add first_pts option Conflicts: configure libavcodec/eamad.c libavcodec/h264_ps.c libavformat/crcenc.c libavformat/ffmdec.c libavformat/ffmenc.c libavformat/framecrcenc.c libavformat/md5enc.c libavformat/nutdec.c libavformat/rawenc.c libavformat/yuv4mpeg.c tests/tiny_psnr.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* RSO demuxer
|
|
* Copyright (c) 2001 Fabrice Bellard (original AU code)
|
|
* Copyright (c) 2010 Rafael Carre
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "pcm.h"
|
|
#include "riff.h"
|
|
#include "rso.h"
|
|
|
|
static int rso_read_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
int id, rate, bps;
|
|
unsigned int size;
|
|
enum CodecID codec;
|
|
AVStream *st;
|
|
|
|
id = avio_rb16(pb);
|
|
size = avio_rb16(pb);
|
|
rate = avio_rb16(pb);
|
|
avio_rb16(pb); /* play mode ? (0x0000 = don't loop) */
|
|
|
|
codec = ff_codec_get_id(ff_codec_rso_tags, id);
|
|
|
|
if (codec == CODEC_ID_ADPCM_IMA_WAV) {
|
|
av_log(s, AV_LOG_ERROR, "ADPCM in RSO not implemented\n");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
bps = av_get_bits_per_sample(codec);
|
|
if (!bps) {
|
|
av_log_ask_for_sample(s, "could not determine bits per sample\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* now we are ready: build format streams */
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
st->duration = (size * 8) / bps;
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codec->codec_tag = id;
|
|
st->codec->codec_id = codec;
|
|
st->codec->channels = 1;
|
|
st->codec->sample_rate = rate;
|
|
|
|
avpriv_set_pts_info(st, 64, 1, rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define BLOCK_SIZE 1024 /* in samples */
|
|
|
|
static int rso_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int bps = av_get_bits_per_sample(s->streams[0]->codec->codec_id);
|
|
int ret = av_get_packet(s->pb, pkt, BLOCK_SIZE * bps >> 3);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
|
|
pkt->stream_index = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_rso_demuxer = {
|
|
.name = "rso",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
|
|
.extensions = "rso",
|
|
.read_header = rso_read_header,
|
|
.read_packet = rso_read_packet,
|
|
.read_seek = ff_pcm_read_seek,
|
|
.codec_tag = (const AVCodecTag* const []){ff_codec_rso_tags, 0},
|
|
};
|