/* aiff input */
static int aiff_read_header(AVFormatContext *s)
{
int size, filesize;
int64_t offset = 0;
uint32_t tag;
unsigned version = AIFF_C_VERSION1;
AVIOContext *pb = s->pb;
AVStream * st;
AIFFInputContext *aiff = s->priv_data;
/* 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 < 0)
return size;
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('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->codec->block_align) /* Assume COMM already parsed */
goto got_sound;
if (!pb->seekable) {
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;
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata_size = size;
avio_read(pb, st->codec->extradata, size);
break;
case MKTAG('C','H','A','N'):
if (size < 12)
return AVERROR_INVALIDDATA;
ff_mov_read_chan(s, size, st->codec);
break;
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
avio_skip(pb, size);
}
}
got_sound:
if (!st->codec->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->codec->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;
}
static int read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
CafContext *caf = s->priv_data;
AVStream *st;
uint32_t tag = 0;
int found_data, ret;
int64_t size;
avio_skip(pb, 8); /* magic, version, file flags */
/* audio description chunk */
if (avio_rb32(pb) != MKBETAG('d','e','s','c')) {
av_log(s, AV_LOG_ERROR, "desc chunk not present\n");
return AVERROR_INVALIDDATA;
}
size = avio_rb64(pb);
if (size != 32)
return AVERROR_INVALIDDATA;
ret = read_desc_chunk(s);
if (ret)
return ret;
st = s->streams[0];
/* parse each chunk */
found_data = 0;
while (!pb->eof_reached) {
/* stop at data chunk if seeking is not supported or
data chunk size is unknown */
if (found_data && (caf->data_size < 0 || !(pb->seekable & AVIO_SEEKABLE_NORMAL)))
break;
tag = avio_rb32(pb);
size = avio_rb64(pb);
if (pb->eof_reached)
break;
switch (tag) {
case MKBETAG('d','a','t','a'):
avio_skip(pb, 4); /* edit count */
caf->data_start = avio_tell(pb);
caf->data_size = size < 0 ? -1 : size - 4;
if (caf->data_size > 0 && (pb->seekable & AVIO_SEEKABLE_NORMAL))
avio_skip(pb, caf->data_size);
found_data = 1;
break;
case MKBETAG('c','h','a','n'):
if ((ret = ff_mov_read_chan(s, s->pb, st, size)) < 0)
return ret;
break;
/* magic cookie chunk */
case MKBETAG('k','u','k','i'):
if (read_kuki_chunk(s, size))
return AVERROR_INVALIDDATA;
break;
/* packet table chunk */
case MKBETAG('p','a','k','t'):
if (read_pakt_chunk(s, size))
return AVERROR_INVALIDDATA;
break;
case MKBETAG('i','n','f','o'):
read_info_chunk(s, size);
break;
default:
#define _(x) ((x) >= ' ' ? (x) : ' ')
av_log(s, AV_LOG_WARNING,
"skipping CAF chunk: %08"PRIX32" (%"PRIu32"%"PRIu32"%"PRIu32"%"PRIu32")\n",
tag, _(tag>>24), _((tag>>16)&0xFF), _((tag>>8)&0xFF), _(tag&0xFF));
#undef _
case MKBETAG('f','r','e','e'):
if (size < 0)
return AVERROR_INVALIDDATA;
avio_skip(pb, size);
break;
}
}
if (!found_data)
return AVERROR_INVALIDDATA;
if (caf->bytes_per_packet > 0 && caf->frames_per_packet > 0) {
if (caf->data_size > 0)
st->nb_frames = (caf->data_size / caf->bytes_per_packet) * caf->frames_per_packet;
} else if (st->nb_index_entries) {
st->codecpar->bit_rate = st->codecpar->sample_rate * caf->data_size * 8 /
st->duration;
} else {
av_log(s, AV_LOG_ERROR, "Missing packet table. It is required when "
"block size or frame size are variable.\n");
return AVERROR_INVALIDDATA;
}
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
st->start_time = 0;
/* position the stream at the start of data */
if (caf->data_size >= 0)
avio_seek(pb, caf->data_start, SEEK_SET);
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 < 0)
return size;
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) {
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->codec->block_align && !pb->seekable) /* Assume COMM already parsed */
goto got_sound;
if (!pb->seekable) {
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 (ff_get_extradata(st->codec, pb, size) < 0)
return AVERROR(ENOMEM);
if (st->codec->codec_id == AV_CODEC_ID_QDM2 && size>=12*4 && !st->codec->block_align) {
st->codec->block_align = AV_RB32(st->codec->extradata+11*4);
aiff->block_duration = AV_RB32(st->codec->extradata+9*4);
} else if (st->codec->codec_id == AV_CODEC_ID_QCELP) {
char rate = 0;
if (size >= 25)
rate = st->codec->extradata[24];
switch (rate) {
case 'H': // RATE_HALF
st->codec->block_align = 17;
break;
case 'F': // RATE_FULL
default:
st->codec->block_align = 35;
}
aiff->block_duration = 160;
st->codec->bit_rate = st->codec->sample_rate * (st->codec->block_align << 3) /
aiff->block_duration;
}
break;
case MKTAG('C','H','A','N'):
if(ff_mov_read_chan(s, pb, st, size) < 0)
return AVERROR_INVALIDDATA;
break;
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
avio_skip(pb, size);
}
}
got_sound:
if (!st->codec->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->codec->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;
}
