mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-24 03:39:45 +00:00
0b1e94c50a
This unbreaks muxing-encoding Example: ffmpeg -i matrixbench_mpeg2.mpg new.avi -rw-r----- 1 michael michael 226035354 Jan 1 16:27 new.avi -rw-r----- 1 michael michael 10016802 Jan 1 16:28 ref.avi Also av_get_audio_frame_duration() itself uses frame_size This reverts commit29e6606e9b, reversing changes made to53448461a7.
339 lines
12 KiB
C
339 lines
12 KiB
C
/*
|
|
* RIFF muxing functions
|
|
* Copyright (c) 2000 Fabrice Bellard
|
|
*
|
|
* 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/dict.h"
|
|
#include "libavutil/log.h"
|
|
#include "libavutil/mathematics.h"
|
|
#include "libavcodec/avcodec.h"
|
|
#include "libavcodec/bytestream.h"
|
|
#include "avformat.h"
|
|
#include "avio_internal.h"
|
|
#include "riff.h"
|
|
|
|
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
|
|
{
|
|
ffio_wfourcc(pb, tag);
|
|
avio_wl32(pb, -1);
|
|
return avio_tell(pb);
|
|
}
|
|
|
|
void ff_end_tag(AVIOContext *pb, int64_t start)
|
|
{
|
|
int64_t pos;
|
|
|
|
av_assert0((start&1) == 0);
|
|
|
|
pos = avio_tell(pb);
|
|
if (pos & 1)
|
|
avio_w8(pb, 0);
|
|
avio_seek(pb, start - 4, SEEK_SET);
|
|
avio_wl32(pb, (uint32_t)(pos - start));
|
|
avio_seek(pb, FFALIGN(pos, 2), SEEK_SET);
|
|
}
|
|
|
|
/* WAVEFORMATEX header */
|
|
/* returns the size or -1 on error */
|
|
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags)
|
|
{
|
|
int bps, blkalign, bytespersec, frame_size;
|
|
int hdrsize;
|
|
int64_t hdrstart = avio_tell(pb);
|
|
int waveformatextensible;
|
|
uint8_t temp[256];
|
|
uint8_t *riff_extradata = temp;
|
|
uint8_t *riff_extradata_start = temp;
|
|
|
|
if (!enc->codec_tag || enc->codec_tag > 0xffff)
|
|
return -1;
|
|
|
|
/* We use the known constant frame size for the codec if known, otherwise
|
|
* fall back on using AVCodecContext.frame_size, which is not as reliable
|
|
* for indicating packet duration. */
|
|
frame_size = av_get_audio_frame_duration(enc, enc->block_align);
|
|
|
|
waveformatextensible = (enc->channels > 2 && enc->channel_layout) ||
|
|
enc->sample_rate > 48000 ||
|
|
enc->codec_id == AV_CODEC_ID_EAC3 ||
|
|
av_get_bits_per_sample(enc->codec_id) > 16;
|
|
|
|
if (waveformatextensible)
|
|
avio_wl16(pb, 0xfffe);
|
|
else
|
|
avio_wl16(pb, enc->codec_tag);
|
|
|
|
avio_wl16(pb, enc->channels);
|
|
avio_wl32(pb, enc->sample_rate);
|
|
if (enc->codec_id == AV_CODEC_ID_ATRAC3 ||
|
|
enc->codec_id == AV_CODEC_ID_G723_1 ||
|
|
enc->codec_id == AV_CODEC_ID_MP2 ||
|
|
enc->codec_id == AV_CODEC_ID_MP3 ||
|
|
enc->codec_id == AV_CODEC_ID_GSM_MS) {
|
|
bps = 0;
|
|
} else {
|
|
if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
|
|
if (enc->bits_per_coded_sample)
|
|
bps = enc->bits_per_coded_sample;
|
|
else
|
|
bps = 16; // default to 16
|
|
}
|
|
}
|
|
if (bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample) {
|
|
av_log(enc, AV_LOG_WARNING,
|
|
"requested bits_per_coded_sample (%d) "
|
|
"and actually stored (%d) differ\n",
|
|
enc->bits_per_coded_sample, bps);
|
|
}
|
|
|
|
if (enc->codec_id == AV_CODEC_ID_MP2) {
|
|
blkalign = (144 * enc->bit_rate - 1)/enc->sample_rate + 1;
|
|
} else if (enc->codec_id == AV_CODEC_ID_MP3) {
|
|
blkalign = 576 * (enc->sample_rate <= (24000 + 32000)/2 ? 1 : 2);
|
|
} else if (enc->codec_id == AV_CODEC_ID_AC3) {
|
|
blkalign = 3840; /* maximum bytes per frame */
|
|
} else if (enc->codec_id == AV_CODEC_ID_AAC) {
|
|
blkalign = 768 * enc->channels; /* maximum bytes per frame */
|
|
} else if (enc->codec_id == AV_CODEC_ID_G723_1) {
|
|
blkalign = 24;
|
|
} else if (enc->block_align != 0) { /* specified by the codec */
|
|
blkalign = enc->block_align;
|
|
} else
|
|
blkalign = bps * enc->channels / av_gcd(8, bps);
|
|
if (enc->codec_id == AV_CODEC_ID_PCM_U8 ||
|
|
enc->codec_id == AV_CODEC_ID_PCM_S24LE ||
|
|
enc->codec_id == AV_CODEC_ID_PCM_S32LE ||
|
|
enc->codec_id == AV_CODEC_ID_PCM_F32LE ||
|
|
enc->codec_id == AV_CODEC_ID_PCM_F64LE ||
|
|
enc->codec_id == AV_CODEC_ID_PCM_S16LE) {
|
|
bytespersec = enc->sample_rate * blkalign;
|
|
} else if (enc->codec_id == AV_CODEC_ID_G723_1) {
|
|
bytespersec = 800;
|
|
} else {
|
|
bytespersec = enc->bit_rate / 8;
|
|
}
|
|
avio_wl32(pb, bytespersec); /* bytes per second */
|
|
avio_wl16(pb, blkalign); /* block align */
|
|
avio_wl16(pb, bps); /* bits per sample */
|
|
if (enc->codec_id == AV_CODEC_ID_MP3) {
|
|
bytestream_put_le16(&riff_extradata, 1); /* wID */
|
|
bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
|
|
bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
|
|
bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
|
|
bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
|
|
} else if (enc->codec_id == AV_CODEC_ID_MP2) {
|
|
/* fwHeadLayer */
|
|
bytestream_put_le16(&riff_extradata, 2);
|
|
/* dwHeadBitrate */
|
|
bytestream_put_le32(&riff_extradata, enc->bit_rate);
|
|
/* fwHeadMode */
|
|
bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8);
|
|
/* fwHeadModeExt */
|
|
bytestream_put_le16(&riff_extradata, 0);
|
|
/* wHeadEmphasis */
|
|
bytestream_put_le16(&riff_extradata, 1);
|
|
/* fwHeadFlags */
|
|
bytestream_put_le16(&riff_extradata, 16);
|
|
/* dwPTSLow */
|
|
bytestream_put_le32(&riff_extradata, 0);
|
|
/* dwPTSHigh */
|
|
bytestream_put_le32(&riff_extradata, 0);
|
|
} else if (enc->codec_id == AV_CODEC_ID_G723_1) {
|
|
bytestream_put_le32(&riff_extradata, 0x9ace0002); /* extradata needed for msacm g723.1 codec */
|
|
bytestream_put_le32(&riff_extradata, 0xaea2f732);
|
|
bytestream_put_le16(&riff_extradata, 0xacde);
|
|
} else if (enc->codec_id == AV_CODEC_ID_GSM_MS ||
|
|
enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
|
|
/* wSamplesPerBlock */
|
|
bytestream_put_le16(&riff_extradata, frame_size);
|
|
} else if (enc->extradata_size) {
|
|
riff_extradata_start = enc->extradata;
|
|
riff_extradata = enc->extradata + enc->extradata_size;
|
|
}
|
|
/* write WAVEFORMATEXTENSIBLE extensions */
|
|
if (waveformatextensible) {
|
|
int write_channel_mask = !(flags & FF_PUT_WAV_HEADER_SKIP_CHANNELMASK) &&
|
|
(enc->strict_std_compliance < FF_COMPLIANCE_NORMAL ||
|
|
enc->channel_layout < 0x40000);
|
|
/* 22 is WAVEFORMATEXTENSIBLE size */
|
|
avio_wl16(pb, riff_extradata - riff_extradata_start + 22);
|
|
/* ValidBitsPerSample || SamplesPerBlock || Reserved */
|
|
avio_wl16(pb, bps);
|
|
/* dwChannelMask */
|
|
avio_wl32(pb, write_channel_mask ? enc->channel_layout : 0);
|
|
/* GUID + next 3 */
|
|
if (enc->codec_id == AV_CODEC_ID_EAC3) {
|
|
ff_put_guid(pb, ff_get_codec_guid(enc->codec_id, ff_codec_wav_guids));
|
|
} else {
|
|
avio_wl32(pb, enc->codec_tag);
|
|
avio_wl32(pb, 0x00100000);
|
|
avio_wl32(pb, 0xAA000080);
|
|
avio_wl32(pb, 0x719B3800);
|
|
}
|
|
} else if ((flags & FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX) ||
|
|
enc->codec_tag != 0x0001 /* PCM */ ||
|
|
riff_extradata - riff_extradata_start) {
|
|
/* WAVEFORMATEX */
|
|
avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
|
|
} /* else PCMWAVEFORMAT */
|
|
avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
|
|
hdrsize = avio_tell(pb) - hdrstart;
|
|
if (hdrsize & 1) {
|
|
hdrsize++;
|
|
avio_w8(pb, 0);
|
|
}
|
|
|
|
return hdrsize;
|
|
}
|
|
|
|
/* BITMAPINFOHEADER header */
|
|
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc,
|
|
const AVCodecTag *tags, int for_asf, int ignore_extradata)
|
|
{
|
|
int keep_height = enc->extradata_size >= 9 &&
|
|
!memcmp(enc->extradata + enc->extradata_size - 9, "BottomUp", 9);
|
|
int extradata_size = enc->extradata_size - 9*keep_height;
|
|
|
|
/* size */
|
|
avio_wl32(pb, 40 + (ignore_extradata ? 0 :extradata_size));
|
|
avio_wl32(pb, enc->width);
|
|
//We always store RGB TopDown
|
|
avio_wl32(pb, enc->codec_tag || keep_height ? enc->height : -enc->height);
|
|
/* planes */
|
|
avio_wl16(pb, 1);
|
|
/* depth */
|
|
avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24);
|
|
/* compression type */
|
|
avio_wl32(pb, enc->codec_tag);
|
|
avio_wl32(pb, (enc->width * enc->height * (enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24)+7) / 8);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
|
|
if (!ignore_extradata) {
|
|
avio_write(pb, enc->extradata, extradata_size);
|
|
|
|
if (!for_asf && extradata_size & 1)
|
|
avio_w8(pb, 0);
|
|
}
|
|
}
|
|
|
|
void ff_parse_specific_params(AVStream *st, int *au_rate,
|
|
int *au_ssize, int *au_scale)
|
|
{
|
|
AVCodecContext *codec = st->codec;
|
|
int gcd;
|
|
int audio_frame_size;
|
|
|
|
/* We use the known constant frame size for the codec if known, otherwise
|
|
* fall back on using AVCodecContext.frame_size, which is not as reliable
|
|
* for indicating packet duration. */
|
|
audio_frame_size = av_get_audio_frame_duration(codec, 0);
|
|
if (!audio_frame_size)
|
|
audio_frame_size = codec->frame_size;
|
|
|
|
*au_ssize = codec->block_align;
|
|
if (audio_frame_size && codec->sample_rate) {
|
|
*au_scale = audio_frame_size;
|
|
*au_rate = codec->sample_rate;
|
|
} else if (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
codec->codec_type == AVMEDIA_TYPE_DATA ||
|
|
codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
*au_scale = st->time_base.num;
|
|
*au_rate = st->time_base.den;
|
|
} else {
|
|
*au_scale = codec->block_align ? codec->block_align * 8 : 8;
|
|
*au_rate = codec->bit_rate ? codec->bit_rate :
|
|
8 * codec->sample_rate;
|
|
}
|
|
gcd = av_gcd(*au_scale, *au_rate);
|
|
*au_scale /= gcd;
|
|
*au_rate /= gcd;
|
|
}
|
|
|
|
void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
|
|
{
|
|
size_t len = strlen(str);
|
|
if (len > 0 && len < UINT32_MAX) {
|
|
len++;
|
|
ffio_wfourcc(pb, tag);
|
|
avio_wl32(pb, len);
|
|
avio_put_str(pb, str);
|
|
if (len & 1)
|
|
avio_w8(pb, 0);
|
|
}
|
|
}
|
|
|
|
static const char riff_tags[][5] = {
|
|
"IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
|
|
"IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
|
|
"IPRT", "ITRK", "ISBJ", "ISFT", "ISHP", "ISMP", "ISRC", "ISRF", "ITCH",
|
|
{ 0 }
|
|
};
|
|
|
|
static int riff_has_valid_tags(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; *riff_tags[i]; i++)
|
|
if (av_dict_get(s->metadata, riff_tags[i], NULL, AV_DICT_MATCH_CASE))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ff_riff_write_info(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
int i;
|
|
int64_t list_pos;
|
|
AVDictionaryEntry *t = NULL;
|
|
|
|
ff_metadata_conv(&s->metadata, ff_riff_info_conv, NULL);
|
|
|
|
/* writing empty LIST is not nice and may cause problems */
|
|
if (!riff_has_valid_tags(s))
|
|
return;
|
|
|
|
list_pos = ff_start_tag(pb, "LIST");
|
|
ffio_wfourcc(pb, "INFO");
|
|
for (i = 0; *riff_tags[i]; i++)
|
|
if ((t = av_dict_get(s->metadata, riff_tags[i],
|
|
NULL, AV_DICT_MATCH_CASE)))
|
|
ff_riff_write_info_tag(s->pb, t->key, t->value);
|
|
ff_end_tag(pb, list_pos);
|
|
}
|
|
|
|
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
|
|
{
|
|
av_assert0(sizeof(*g) == 16);
|
|
avio_write(s, *g, sizeof(*g));
|
|
}
|
|
|
|
const ff_asf_guid *ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid)
|
|
{
|
|
int i;
|
|
for (i = 0; av_guid[i].id != AV_CODEC_ID_NONE; i++) {
|
|
if (id == av_guid[i].id)
|
|
return &(av_guid[i].guid);
|
|
}
|
|
return NULL;
|
|
}
|