mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
c1e439d7e9
It is not uncommon to find code where the caller thinks to know better what the return value should be than the callee. E.g. something like "if (av_new_packet(pkt, size) < 0) return AVERROR(ENOMEM);". This commit changes several instances of this to instead forward the actual error. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
433 lines
14 KiB
C
433 lines
14 KiB
C
/*
|
|
* AIFF/AIFF-C demuxer
|
|
* Copyright (c) 2006 Patrick Guimond
|
|
*
|
|
* 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 "libavutil/mathematics.h"
|
|
#include "libavutil/dict.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "pcm.h"
|
|
#include "aiff.h"
|
|
#include "isom.h"
|
|
#include "id3v2.h"
|
|
#include "mov_chan.h"
|
|
#include "replaygain.h"
|
|
|
|
#define AIFF 0
|
|
#define AIFF_C_VERSION1 0xA2805140
|
|
|
|
typedef struct AIFFInputContext {
|
|
int64_t data_end;
|
|
int block_duration;
|
|
} AIFFInputContext;
|
|
|
|
static enum AVCodecID aiff_codec_get_id(int bps)
|
|
{
|
|
if (bps <= 8)
|
|
return AV_CODEC_ID_PCM_S8;
|
|
if (bps <= 16)
|
|
return AV_CODEC_ID_PCM_S16BE;
|
|
if (bps <= 24)
|
|
return AV_CODEC_ID_PCM_S24BE;
|
|
if (bps <= 32)
|
|
return AV_CODEC_ID_PCM_S32BE;
|
|
|
|
/* bigger than 32 isn't allowed */
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
|
|
/* returns the size of the found tag */
|
|
static int get_tag(AVIOContext *pb, uint32_t * tag)
|
|
{
|
|
int size;
|
|
|
|
if (avio_feof(pb))
|
|
return AVERROR(EIO);
|
|
|
|
*tag = avio_rl32(pb);
|
|
size = avio_rb32(pb);
|
|
|
|
if (size < 0)
|
|
size = 0x7fffffff;
|
|
|
|
return size;
|
|
}
|
|
|
|
/* Metadata string read */
|
|
static void get_meta(AVFormatContext *s, const char *key, int size)
|
|
{
|
|
uint8_t *str = av_malloc(size+1);
|
|
|
|
if (str) {
|
|
int res = avio_read(s->pb, str, size);
|
|
if (res < 0){
|
|
av_free(str);
|
|
return;
|
|
}
|
|
size -= res;
|
|
str[res] = 0;
|
|
av_dict_set(&s->metadata, key, str, AV_DICT_DONT_STRDUP_VAL);
|
|
}
|
|
|
|
avio_skip(s->pb, size);
|
|
}
|
|
|
|
/* Returns the number of sound data frames or negative on error */
|
|
static int get_aiff_header(AVFormatContext *s, int size,
|
|
unsigned version)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
AIFFInputContext *aiff = s->priv_data;
|
|
int exp;
|
|
uint64_t val;
|
|
int sample_rate;
|
|
unsigned int num_frames;
|
|
|
|
if (size & 1)
|
|
size++;
|
|
par->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
par->channels = avio_rb16(pb);
|
|
num_frames = avio_rb32(pb);
|
|
par->bits_per_coded_sample = avio_rb16(pb);
|
|
|
|
exp = avio_rb16(pb) - 16383 - 63;
|
|
val = avio_rb64(pb);
|
|
if (exp <-63 || exp >63) {
|
|
av_log(s, AV_LOG_ERROR, "exp %d is out of range\n", exp);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (exp >= 0)
|
|
sample_rate = val << exp;
|
|
else
|
|
sample_rate = (val + (1ULL<<(-exp-1))) >> -exp;
|
|
par->sample_rate = sample_rate;
|
|
size -= 18;
|
|
|
|
/* get codec id for AIFF-C */
|
|
if (size < 4) {
|
|
version = AIFF;
|
|
} else if (version == AIFF_C_VERSION1) {
|
|
par->codec_tag = avio_rl32(pb);
|
|
par->codec_id = ff_codec_get_id(ff_codec_aiff_tags, par->codec_tag);
|
|
if (par->codec_id == AV_CODEC_ID_NONE)
|
|
avpriv_request_sample(s, "unknown or unsupported codec tag: %s",
|
|
av_fourcc2str(par->codec_tag));
|
|
size -= 4;
|
|
}
|
|
|
|
if (version != AIFF_C_VERSION1 || par->codec_id == AV_CODEC_ID_PCM_S16BE) {
|
|
par->codec_id = aiff_codec_get_id(par->bits_per_coded_sample);
|
|
par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
|
|
aiff->block_duration = 1;
|
|
} else {
|
|
switch (par->codec_id) {
|
|
case AV_CODEC_ID_PCM_F32BE:
|
|
case AV_CODEC_ID_PCM_F64BE:
|
|
case AV_CODEC_ID_PCM_S16LE:
|
|
case AV_CODEC_ID_PCM_ALAW:
|
|
case AV_CODEC_ID_PCM_MULAW:
|
|
aiff->block_duration = 1;
|
|
break;
|
|
case AV_CODEC_ID_ADPCM_IMA_QT:
|
|
par->block_align = 34 * par->channels;
|
|
break;
|
|
case AV_CODEC_ID_MACE3:
|
|
par->block_align = 2 * par->channels;
|
|
break;
|
|
case AV_CODEC_ID_ADPCM_G726LE:
|
|
par->bits_per_coded_sample = 5;
|
|
case AV_CODEC_ID_ADPCM_IMA_WS:
|
|
case AV_CODEC_ID_ADPCM_G722:
|
|
case AV_CODEC_ID_MACE6:
|
|
case AV_CODEC_ID_SDX2_DPCM:
|
|
par->block_align = 1 * par->channels;
|
|
break;
|
|
case AV_CODEC_ID_GSM:
|
|
par->block_align = 33;
|
|
break;
|
|
default:
|
|
aiff->block_duration = 1;
|
|
break;
|
|
}
|
|
if (par->block_align > 0)
|
|
aiff->block_duration = av_get_audio_frame_duration2(par,
|
|
par->block_align);
|
|
}
|
|
|
|
/* Block align needs to be computed in all cases, as the definition
|
|
* is specific to applications -> here we use the WAVE format definition */
|
|
if (!par->block_align)
|
|
par->block_align = (av_get_bits_per_sample(par->codec_id) * par->channels) >> 3;
|
|
|
|
if (aiff->block_duration) {
|
|
par->bit_rate = (int64_t)par->sample_rate * (par->block_align << 3) /
|
|
aiff->block_duration;
|
|
}
|
|
|
|
/* Chunk is over */
|
|
if (size)
|
|
avio_skip(pb, size);
|
|
|
|
return num_frames;
|
|
}
|
|
|
|
static int aiff_probe(const AVProbeData *p)
|
|
{
|
|
/* check file header */
|
|
if (p->buf[0] == 'F' && p->buf[1] == 'O' &&
|
|
p->buf[2] == 'R' && p->buf[3] == 'M' &&
|
|
p->buf[8] == 'A' && p->buf[9] == 'I' &&
|
|
p->buf[10] == 'F' && (p->buf[11] == 'F' || p->buf[11] == 'C'))
|
|
return AVPROBE_SCORE_MAX;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* aiff input */
|
|
static int aiff_read_header(AVFormatContext *s)
|
|
{
|
|
int ret, size, filesize;
|
|
int64_t offset = 0, position;
|
|
uint32_t tag;
|
|
unsigned version = AIFF_C_VERSION1;
|
|
AVIOContext *pb = s->pb;
|
|
AVStream * st;
|
|
AIFFInputContext *aiff = s->priv_data;
|
|
ID3v2ExtraMeta *id3v2_extra_meta = NULL;
|
|
|
|
/* check FORM header */
|
|
filesize = get_tag(pb, &tag);
|
|
if (filesize < 0 || tag != MKTAG('F', 'O', 'R', 'M'))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
/* AIFF data type */
|
|
tag = avio_rl32(pb);
|
|
if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
|
|
version = AIFF;
|
|
else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
filesize -= 4;
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
while (filesize > 0) {
|
|
/* parse different chunks */
|
|
size = get_tag(pb, &tag);
|
|
|
|
if (size == AVERROR_EOF && offset > 0 && st->codecpar->block_align) {
|
|
av_log(s, AV_LOG_WARNING, "header parser hit EOF\n");
|
|
goto got_sound;
|
|
}
|
|
if (size < 0)
|
|
return size;
|
|
|
|
if (size >= 0x7fffffff - 8)
|
|
filesize = 0;
|
|
else
|
|
filesize -= size + 8;
|
|
|
|
switch (tag) {
|
|
case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
|
|
/* Then for the complete header info */
|
|
st->nb_frames = get_aiff_header(s, size, version);
|
|
if (st->nb_frames < 0)
|
|
return st->nb_frames;
|
|
if (offset > 0) // COMM is after SSND
|
|
goto got_sound;
|
|
break;
|
|
case MKTAG('I', 'D', '3', ' '):
|
|
position = avio_tell(pb);
|
|
ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
|
|
if (id3v2_extra_meta)
|
|
if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0 ||
|
|
(ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0) {
|
|
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
|
|
return ret;
|
|
}
|
|
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
|
|
if (position + size > avio_tell(pb))
|
|
avio_skip(pb, position + size - avio_tell(pb));
|
|
break;
|
|
case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
|
|
version = avio_rb32(pb);
|
|
break;
|
|
case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
|
|
get_meta(s, "title" , size);
|
|
break;
|
|
case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
|
|
get_meta(s, "author" , size);
|
|
break;
|
|
case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
|
|
get_meta(s, "copyright", size);
|
|
break;
|
|
case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
|
|
get_meta(s, "comment" , size);
|
|
break;
|
|
case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
|
|
aiff->data_end = avio_tell(pb) + size;
|
|
offset = avio_rb32(pb); /* Offset of sound data */
|
|
avio_rb32(pb); /* BlockSize... don't care */
|
|
offset += avio_tell(pb); /* Compute absolute data offset */
|
|
if (st->codecpar->block_align && !(pb->seekable & AVIO_SEEKABLE_NORMAL)) /* Assume COMM already parsed */
|
|
goto got_sound;
|
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
|
|
av_log(s, AV_LOG_ERROR, "file is not seekable\n");
|
|
return -1;
|
|
}
|
|
avio_skip(pb, size - 8);
|
|
break;
|
|
case MKTAG('w', 'a', 'v', 'e'):
|
|
if ((uint64_t)size > (1<<30))
|
|
return -1;
|
|
if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
|
|
return ret;
|
|
if ( (st->codecpar->codec_id == AV_CODEC_ID_QDMC || st->codecpar->codec_id == AV_CODEC_ID_QDM2)
|
|
&& size>=12*4 && !st->codecpar->block_align) {
|
|
st->codecpar->block_align = AV_RB32(st->codecpar->extradata+11*4);
|
|
aiff->block_duration = AV_RB32(st->codecpar->extradata+9*4);
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
|
|
char rate = 0;
|
|
if (size >= 25)
|
|
rate = st->codecpar->extradata[24];
|
|
switch (rate) {
|
|
case 'H': // RATE_HALF
|
|
st->codecpar->block_align = 17;
|
|
break;
|
|
case 'F': // RATE_FULL
|
|
default:
|
|
st->codecpar->block_align = 35;
|
|
}
|
|
aiff->block_duration = 160;
|
|
st->codecpar->bit_rate = (int64_t)st->codecpar->sample_rate * (st->codecpar->block_align << 3) /
|
|
aiff->block_duration;
|
|
}
|
|
break;
|
|
case MKTAG('C','H','A','N'):
|
|
if ((ret = ff_mov_read_chan(s, pb, st, size)) < 0)
|
|
return ret;
|
|
break;
|
|
case MKTAG('A','P','C','M'): /* XA ADPCM compressed sound chunk */
|
|
st->codecpar->codec_id = AV_CODEC_ID_ADPCM_XA;
|
|
aiff->data_end = avio_tell(pb) + size;
|
|
offset = avio_tell(pb) + 8;
|
|
/* This field is unknown and its data seems to be irrelevant */
|
|
avio_rb32(pb);
|
|
st->codecpar->block_align = avio_rb32(pb);
|
|
|
|
goto got_sound;
|
|
break;
|
|
case 0:
|
|
if (offset > 0 && st->codecpar->block_align) // COMM && SSND
|
|
goto got_sound;
|
|
default: /* Jump */
|
|
avio_skip(pb, size);
|
|
}
|
|
|
|
/* Skip required padding byte for odd-sized chunks. */
|
|
if (size & 1) {
|
|
filesize--;
|
|
avio_skip(pb, 1);
|
|
}
|
|
}
|
|
|
|
ret = ff_replaygain_export(st, s->metadata);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
got_sound:
|
|
if (!st->codecpar->block_align && st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
|
|
av_log(s, AV_LOG_WARNING, "qcelp without wave chunk, assuming full rate\n");
|
|
st->codecpar->block_align = 35;
|
|
} else if (!st->codecpar->block_align) {
|
|
av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Now positioned, get the sound data start and end */
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
|
|
st->start_time = 0;
|
|
st->duration = st->nb_frames * aiff->block_duration;
|
|
|
|
/* Position the stream at the first block */
|
|
avio_seek(pb, offset, SEEK_SET);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define MAX_SIZE 4096
|
|
|
|
static int aiff_read_packet(AVFormatContext *s,
|
|
AVPacket *pkt)
|
|
{
|
|
AVStream *st = s->streams[0];
|
|
AIFFInputContext *aiff = s->priv_data;
|
|
int64_t max_size;
|
|
int res, size;
|
|
|
|
/* calculate size of remaining data */
|
|
max_size = aiff->data_end - avio_tell(s->pb);
|
|
if (max_size <= 0)
|
|
return AVERROR_EOF;
|
|
|
|
if (!st->codecpar->block_align) {
|
|
av_log(s, AV_LOG_ERROR, "block_align not set\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* Now for that packet */
|
|
switch (st->codecpar->codec_id) {
|
|
case AV_CODEC_ID_ADPCM_IMA_QT:
|
|
case AV_CODEC_ID_GSM:
|
|
case AV_CODEC_ID_QDM2:
|
|
case AV_CODEC_ID_QCELP:
|
|
size = st->codecpar->block_align;
|
|
break;
|
|
default:
|
|
size = st->codecpar->block_align ? (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align : MAX_SIZE;
|
|
}
|
|
size = FFMIN(max_size, size);
|
|
res = av_get_packet(s->pb, pkt, size);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
if (size >= st->codecpar->block_align)
|
|
pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
|
|
/* Only one stream in an AIFF file */
|
|
pkt->stream_index = 0;
|
|
pkt->duration = (res / st->codecpar->block_align) * aiff->block_duration;
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_aiff_demuxer = {
|
|
.name = "aiff",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
|
|
.priv_data_size = sizeof(AIFFInputContext),
|
|
.read_probe = aiff_probe,
|
|
.read_header = aiff_read_header,
|
|
.read_packet = aiff_read_packet,
|
|
.read_seek = ff_pcm_read_seek,
|
|
.codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
|
|
};
|