mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
03b04eef72
Several muxers (e.g. pcm muxers) did not check the number of streams even though the individual streams were not recoverable from the muxed files. This commit changes this by using the FF_OFMT_MAX_ONE_OF_EACH flag where appropriate. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
283 lines
8.7 KiB
C
283 lines
8.7 KiB
C
/*
|
|
* amr file format
|
|
* Copyright (c) 2001 FFmpeg project
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
Write and read amr data according to RFC3267, http://www.ietf.org/rfc/rfc3267.txt?number=3267
|
|
*/
|
|
|
|
#include "config_components.h"
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avformat.h"
|
|
#include "avio_internal.h"
|
|
#include "demux.h"
|
|
#include "internal.h"
|
|
#include "mux.h"
|
|
#include "rawdec.h"
|
|
#include "rawenc.h"
|
|
|
|
typedef struct AMRContext {
|
|
FFRawDemuxerContext rawctx;
|
|
} AMRContext;
|
|
|
|
static const uint8_t AMR_header[6] = "#!AMR\x0a";
|
|
static const uint8_t AMRMC_header[12] = "#!AMR_MC1.0\x0a";
|
|
static const uint8_t AMRWB_header[9] = "#!AMR-WB\x0a";
|
|
static const uint8_t AMRWBMC_header[15] = "#!AMR-WB_MC1.0\x0a";
|
|
|
|
static const uint8_t amrnb_packed_size[16] = {
|
|
13, 14, 16, 18, 20, 21, 27, 32, 6, 1, 1, 1, 1, 1, 1, 1
|
|
};
|
|
static const uint8_t amrwb_packed_size[16] = {
|
|
18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 1, 1, 1, 1, 1, 1
|
|
};
|
|
|
|
#if CONFIG_AMR_DEMUXER
|
|
static int amr_probe(const AVProbeData *p)
|
|
{
|
|
// Only check for "#!AMR" which could be amr-wb, amr-nb.
|
|
// This will also trigger multichannel files: "#!AMR_MC1.0\n" and
|
|
// "#!AMR-WB_MC1.0\n"
|
|
|
|
if (!memcmp(p->buf, AMR_header, 5))
|
|
return AVPROBE_SCORE_MAX;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* amr input */
|
|
static int amr_read_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVStream *st;
|
|
uint8_t header[19] = { 0 };
|
|
int read, back = 0, ret;
|
|
|
|
ret = ffio_ensure_seekback(s->pb, sizeof(header));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
read = avio_read(pb, header, sizeof(header));
|
|
if (read < 0)
|
|
return read;
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
if (!memcmp(header, AMR_header, sizeof(AMR_header))) {
|
|
st->codecpar->codec_tag = MKTAG('s', 'a', 'm', 'r');
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_NB;
|
|
st->codecpar->sample_rate = 8000;
|
|
st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
|
|
back = read - sizeof(AMR_header);
|
|
} else if (!memcmp(header, AMRWB_header, sizeof(AMRWB_header))) {
|
|
st->codecpar->codec_tag = MKTAG('s', 'a', 'w', 'b');
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_WB;
|
|
st->codecpar->sample_rate = 16000;
|
|
st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
|
|
back = read - sizeof(AMRWB_header);
|
|
} else if (!memcmp(header, AMRMC_header, sizeof(AMRMC_header))) {
|
|
st->codecpar->codec_tag = MKTAG('s', 'a', 'm', 'r');
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_NB;
|
|
st->codecpar->sample_rate = 8000;
|
|
st->codecpar->ch_layout.nb_channels = AV_RL32(header + 12);
|
|
back = read - 4 - sizeof(AMRMC_header);
|
|
} else if (!memcmp(header, AMRWBMC_header, sizeof(AMRWBMC_header))) {
|
|
st->codecpar->codec_tag = MKTAG('s', 'a', 'w', 'b');
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_WB;
|
|
st->codecpar->sample_rate = 16000;
|
|
st->codecpar->ch_layout.nb_channels = AV_RL32(header + 15);
|
|
back = read - 4 - sizeof(AMRWBMC_header);
|
|
} else {
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (st->codecpar->ch_layout.nb_channels < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
|
|
|
|
if (back > 0)
|
|
avio_seek(pb, -back, SEEK_CUR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFInputFormat ff_amr_demuxer = {
|
|
.p.name = "amr",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("3GPP AMR"),
|
|
.p.flags = AVFMT_GENERIC_INDEX,
|
|
.p.priv_class = &ff_raw_demuxer_class,
|
|
.priv_data_size = sizeof(AMRContext),
|
|
.read_probe = amr_probe,
|
|
.read_header = amr_read_header,
|
|
.read_packet = ff_raw_read_partial_packet,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_AMRNB_DEMUXER
|
|
static int amrnb_probe(const AVProbeData *p)
|
|
{
|
|
int mode, i = 0, valid = 0, invalid = 0;
|
|
const uint8_t *b = p->buf;
|
|
|
|
while (i < p->buf_size) {
|
|
mode = b[i] >> 3 & 0x0F;
|
|
if (mode < 9 && (b[i] & 0x4) == 0x4) {
|
|
int last = b[i];
|
|
int size = amrnb_packed_size[mode];
|
|
while (size--) {
|
|
if (b[++i] != last)
|
|
break;
|
|
}
|
|
if (size > 0) {
|
|
valid++;
|
|
i += size;
|
|
}
|
|
} else {
|
|
valid = 0;
|
|
invalid++;
|
|
i++;
|
|
}
|
|
}
|
|
if (valid > 100 && valid >> 4 > invalid)
|
|
return AVPROBE_SCORE_EXTENSION / 2 + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int amrnb_read_header(AVFormatContext *s)
|
|
{
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_NB;
|
|
st->codecpar->sample_rate = 8000;
|
|
st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
|
|
avpriv_set_pts_info(st, 64, 1, 8000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFInputFormat ff_amrnb_demuxer = {
|
|
.p.name = "amrnb",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("raw AMR-NB"),
|
|
.p.flags = AVFMT_GENERIC_INDEX,
|
|
.p.priv_class = &ff_raw_demuxer_class,
|
|
.priv_data_size = sizeof(AMRContext),
|
|
.read_probe = amrnb_probe,
|
|
.read_header = amrnb_read_header,
|
|
.read_packet = ff_raw_read_partial_packet,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_AMRWB_DEMUXER
|
|
static int amrwb_probe(const AVProbeData *p)
|
|
{
|
|
int mode, i = 0, valid = 0, invalid = 0;
|
|
const uint8_t *b = p->buf;
|
|
|
|
while (i < p->buf_size) {
|
|
mode = b[i] >> 3 & 0x0F;
|
|
if (mode < 10 && (b[i] & 0x4) == 0x4) {
|
|
int last = b[i];
|
|
int size = amrwb_packed_size[mode];
|
|
while (size--) {
|
|
if (b[++i] != last)
|
|
break;
|
|
}
|
|
if (size > 0) {
|
|
valid++;
|
|
i += size;
|
|
}
|
|
} else {
|
|
valid = 0;
|
|
invalid++;
|
|
i++;
|
|
}
|
|
}
|
|
if (valid > 100 && valid >> 4 > invalid)
|
|
return AVPROBE_SCORE_EXTENSION / 2 + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int amrwb_read_header(AVFormatContext *s)
|
|
{
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
st->codecpar->codec_id = AV_CODEC_ID_AMR_WB;
|
|
st->codecpar->sample_rate = 16000;
|
|
st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
|
|
avpriv_set_pts_info(st, 64, 1, 16000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFInputFormat ff_amrwb_demuxer = {
|
|
.p.name = "amrwb",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("raw AMR-WB"),
|
|
.p.flags = AVFMT_GENERIC_INDEX,
|
|
.p.priv_class = &ff_raw_demuxer_class,
|
|
.priv_data_size = sizeof(AMRContext),
|
|
.read_probe = amrwb_probe,
|
|
.read_header = amrwb_read_header,
|
|
.read_packet = ff_raw_read_partial_packet,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_AMR_MUXER
|
|
static int amr_write_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
|
|
if (par->codec_id == AV_CODEC_ID_AMR_NB) {
|
|
avio_write(pb, AMR_header, sizeof(AMR_header)); /* magic number */
|
|
} else if (par->codec_id == AV_CODEC_ID_AMR_WB) {
|
|
avio_write(pb, AMRWB_header, sizeof(AMRWB_header)); /* magic number */
|
|
} else {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const FFOutputFormat ff_amr_muxer = {
|
|
.p.name = "amr",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("3GPP AMR"),
|
|
.p.mime_type = "audio/amr",
|
|
.p.extensions = "amr",
|
|
.p.audio_codec = AV_CODEC_ID_AMR_NB,
|
|
.p.video_codec = AV_CODEC_ID_NONE,
|
|
.p.subtitle_codec = AV_CODEC_ID_NONE,
|
|
.p.flags = AVFMT_NOTIMESTAMPS,
|
|
.flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
|
|
.write_header = amr_write_header,
|
|
.write_packet = ff_raw_write_packet,
|
|
};
|
|
#endif
|