static int smacker_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
SmackerContext *smk = s->priv_data;
AVStream *st, *ast[7];
int i, ret;
int tbase;
/* read and check header */
smk->magic = avio_rl32(pb);
if (smk->magic != MKTAG('S', 'M', 'K', '2') && smk->magic != MKTAG('S', 'M', 'K', '4'))
return AVERROR_INVALIDDATA;
smk->width = avio_rl32(pb);
smk->height = avio_rl32(pb);
smk->frames = avio_rl32(pb);
smk->pts_inc = (int32_t)avio_rl32(pb);
smk->flags = avio_rl32(pb);
if(smk->flags & SMACKER_FLAG_RING_FRAME)
smk->frames++;
for(i = 0; i < 7; i++)
smk->audio[i] = avio_rl32(pb);
smk->treesize = avio_rl32(pb);
if(smk->treesize >= UINT_MAX/4){ // smk->treesize + 16 must not overflow (this check is probably redundant)
av_log(s, AV_LOG_ERROR, "treesize too large\n");
return AVERROR_INVALIDDATA;
}
//FIXME remove extradata "rebuilding"
smk->mmap_size = avio_rl32(pb);
smk->mclr_size = avio_rl32(pb);
smk->full_size = avio_rl32(pb);
smk->type_size = avio_rl32(pb);
for(i = 0; i < 7; i++) {
smk->rates[i] = avio_rl24(pb);
smk->aflags[i] = avio_r8(pb);
}
smk->pad = avio_rl32(pb);
/* setup data */
if(smk->frames > 0xFFFFFF) {
av_log(s, AV_LOG_ERROR, "Too many frames: %"PRIu32"\n", smk->frames);
return AVERROR_INVALIDDATA;
}
smk->frm_size = av_malloc_array(smk->frames, sizeof(*smk->frm_size));
smk->frm_flags = av_malloc(smk->frames);
if (!smk->frm_size || !smk->frm_flags) {
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
return AVERROR(ENOMEM);
}
smk->is_ver4 = (smk->magic != MKTAG('S', 'M', 'K', '2'));
/* read frame info */
for(i = 0; i < smk->frames; i++) {
smk->frm_size[i] = avio_rl32(pb);
}
for(i = 0; i < smk->frames; i++) {
smk->frm_flags[i] = avio_r8(pb);
}
/* init video codec */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
smk->videoindex = st->index;
st->codec->width = smk->width;
st->codec->height = smk->height;
st->codec->pix_fmt = AV_PIX_FMT_PAL8;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_SMACKVIDEO;
st->codec->codec_tag = smk->magic;
/* Smacker uses 100000 as internal timebase */
if(smk->pts_inc < 0)
smk->pts_inc = -smk->pts_inc;
else
smk->pts_inc *= 100;
tbase = 100000;
av_reduce(&tbase, &smk->pts_inc, tbase, smk->pts_inc, (1UL<<31)-1);
avpriv_set_pts_info(st, 33, smk->pts_inc, tbase);
st->duration = smk->frames;
/* handle possible audio streams */
for(i = 0; i < 7; i++) {
smk->indexes[i] = -1;
if (smk->rates[i]) {
ast[i] = avformat_new_stream(s, NULL);
if (!ast[i])
return AVERROR(ENOMEM);
smk->indexes[i] = ast[i]->index;
ast[i]->codec->codec_type = AVMEDIA_TYPE_AUDIO;
if (smk->aflags[i] & SMK_AUD_BINKAUD) {
ast[i]->codec->codec_id = AV_CODEC_ID_BINKAUDIO_RDFT;
} else if (smk->aflags[i] & SMK_AUD_USEDCT) {
ast[i]->codec->codec_id = AV_CODEC_ID_BINKAUDIO_DCT;
} else if (smk->aflags[i] & SMK_AUD_PACKED){
ast[i]->codec->codec_id = AV_CODEC_ID_SMACKAUDIO;
ast[i]->codec->codec_tag = MKTAG('S', 'M', 'K', 'A');
} else {
ast[i]->codec->codec_id = AV_CODEC_ID_PCM_U8;
}
if (smk->aflags[i] & SMK_AUD_STEREO) {
ast[i]->codec->channels = 2;
ast[i]->codec->channel_layout = AV_CH_LAYOUT_STEREO;
} else {
ast[i]->codec->channels = 1;
ast[i]->codec->channel_layout = AV_CH_LAYOUT_MONO;
}
ast[i]->codec->sample_rate = smk->rates[i];
ast[i]->codec->bits_per_coded_sample = (smk->aflags[i] & SMK_AUD_16BITS) ? 16 : 8;
if(ast[i]->codec->bits_per_coded_sample == 16 && ast[i]->codec->codec_id == AV_CODEC_ID_PCM_U8)
ast[i]->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
avpriv_set_pts_info(ast[i], 64, 1, ast[i]->codec->sample_rate
* ast[i]->codec->channels * ast[i]->codec->bits_per_coded_sample / 8);
}
}
/* load trees to extradata, they will be unpacked by decoder */
if(ff_alloc_extradata(st->codec, smk->treesize + 16)){
av_log(s, AV_LOG_ERROR,
"Cannot allocate %"PRIu32" bytes of extradata\n",
smk->treesize + 16);
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
return AVERROR(ENOMEM);
}
ret = avio_read(pb, st->codec->extradata + 16, st->codec->extradata_size - 16);
if(ret != st->codec->extradata_size - 16){
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
return AVERROR(EIO);
}
((int32_t*)st->codec->extradata)[0] = av_le2ne32(smk->mmap_size);
((int32_t*)st->codec->extradata)[1] = av_le2ne32(smk->mclr_size);
((int32_t*)st->codec->extradata)[2] = av_le2ne32(smk->full_size);
((int32_t*)st->codec->extradata)[3] = av_le2ne32(smk->type_size);
smk->curstream = -1;
smk->nextpos = avio_tell(pb);
return 0;
}
static int yop_read_header(AVFormatContext *s)
{
YopDecContext *yop = s->priv_data;
AVIOContext *pb = s->pb;
AVCodecContext *audio_dec, *video_dec;
AVStream *audio_stream, *video_stream;
int frame_rate, ret;
audio_stream = avformat_new_stream(s, NULL);
video_stream = avformat_new_stream(s, NULL);
if (!audio_stream || !video_stream)
return AVERROR(ENOMEM);
// Extra data that will be passed to the decoder
if (ff_alloc_extradata(video_stream->codec, 8))
return AVERROR(ENOMEM);
// Audio
audio_dec = audio_stream->codec;
audio_dec->codec_type = AVMEDIA_TYPE_AUDIO;
audio_dec->codec_id = AV_CODEC_ID_ADPCM_IMA_APC;
audio_dec->channels = 1;
audio_dec->channel_layout = AV_CH_LAYOUT_MONO;
audio_dec->sample_rate = 22050;
// Video
video_dec = video_stream->codec;
video_dec->codec_type = AVMEDIA_TYPE_VIDEO;
video_dec->codec_id = AV_CODEC_ID_YOP;
avio_skip(pb, 6);
frame_rate = avio_r8(pb);
yop->frame_size = avio_r8(pb) * 2048;
video_dec->width = avio_rl16(pb);
video_dec->height = avio_rl16(pb);
video_stream->sample_aspect_ratio = (AVRational){1, 2};
ret = avio_read(pb, video_dec->extradata, 8);
if (ret < 8)
return ret < 0 ? ret : AVERROR_EOF;
yop->palette_size = video_dec->extradata[0] * 3 + 4;
yop->audio_block_length = AV_RL16(video_dec->extradata + 6);
video_dec->bit_rate = 8 * (yop->frame_size - yop->audio_block_length) * frame_rate;
// 1840 samples per frame, 1 nibble per sample; hence 1840/2 = 920
if (yop->audio_block_length < 920 ||
yop->audio_block_length + yop->palette_size >= yop->frame_size) {
av_log(s, AV_LOG_ERROR, "YOP has invalid header\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, 2048, SEEK_SET);
avpriv_set_pts_info(video_stream, 32, 1, frame_rate);
return 0;
}
static int mpc_read_header(AVFormatContext *s)
{
MPCContext *c = s->priv_data;
AVStream *st;
if(avio_rl24(s->pb) != MKTAG('M', 'P', '+', 0)){
av_log(s, AV_LOG_ERROR, "Not a Musepack file\n");
return AVERROR_INVALIDDATA;
}
c->ver = avio_r8(s->pb);
if(c->ver != 0x07 && c->ver != 0x17){
av_log(s, AV_LOG_ERROR, "Can demux Musepack SV7, got version %02X\n", c->ver);
return AVERROR_INVALIDDATA;
}
c->fcount = avio_rl32(s->pb);
if((int64_t)c->fcount * sizeof(MPCFrame) >= UINT_MAX){
av_log(s, AV_LOG_ERROR, "Too many frames, seeking is not possible\n");
return AVERROR_INVALIDDATA;
}
if(c->fcount){
c->frames = av_malloc(c->fcount * sizeof(MPCFrame));
if(!c->frames){
av_log(s, AV_LOG_ERROR, "Cannot allocate seektable\n");
return AVERROR(ENOMEM);
}
}else{
av_log(s, AV_LOG_WARNING, "Container reports no frames\n");
}
c->curframe = 0;
c->lastframe = -1;
c->curbits = 8;
c->frames_noted = 0;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_MUSEPACK7;
st->codec->channels = 2;
st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
st->codec->bits_per_coded_sample = 16;
if (ff_alloc_extradata(st->codec, 16))
return AVERROR(ENOMEM);
avio_read(s->pb, st->codec->extradata, 16);
st->codec->sample_rate = mpc_rate[st->codec->extradata[2] & 3];
avpriv_set_pts_info(st, 32, MPC_FRAMESIZE, st->codec->sample_rate);
/* scan for seekpoints */
st->start_time = 0;
st->duration = c->fcount;
/* try to read APE tags */
if (s->pb->seekable) {
int64_t pos = avio_tell(s->pb);
ff_ape_parse_tag(s);
if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
ff_id3v1_read(s);
avio_seek(s->pb, pos, SEEK_SET);
}
return 0;
}
static int wsvqa_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
WsVqaDemuxContext *wsvqa = s->priv_data;
AVIOContext *pb = s->pb;
int ret = -1;
uint8_t preamble[VQA_PREAMBLE_SIZE];
uint32_t chunk_type;
uint32_t chunk_size;
int skip_byte;
while (avio_read(pb, preamble, VQA_PREAMBLE_SIZE) == VQA_PREAMBLE_SIZE) {
chunk_type = AV_RB32(&preamble[0]);
chunk_size = AV_RB32(&preamble[4]);
skip_byte = chunk_size & 0x01;
if ((chunk_type == SND0_TAG) || (chunk_type == SND1_TAG) ||
(chunk_type == SND2_TAG) || (chunk_type == VQFR_TAG)) {
ret= av_get_packet(pb, pkt, chunk_size);
if (ret<0)
return AVERROR(EIO);
switch (chunk_type) {
case SND0_TAG:
case SND1_TAG:
case SND2_TAG:
if (wsvqa->audio_stream_index == -1) {
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
wsvqa->audio_stream_index = st->index;
if (!wsvqa->sample_rate)
wsvqa->sample_rate = 22050;
if (!wsvqa->channels)
wsvqa->channels = 1;
if (!wsvqa->bps)
wsvqa->bps = 8;
st->codec->sample_rate = wsvqa->sample_rate;
st->codec->bits_per_coded_sample = wsvqa->bps;
st->codec->channels = wsvqa->channels;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
switch (chunk_type) {
case SND0_TAG:
if (wsvqa->bps == 16)
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
else
st->codec->codec_id = AV_CODEC_ID_PCM_U8;
break;
case SND1_TAG:
st->codec->codec_id = AV_CODEC_ID_WESTWOOD_SND1;
break;
case SND2_TAG:
st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WS;
if (ff_alloc_extradata(st->codec, 2))
return AVERROR(ENOMEM);
AV_WL16(st->codec->extradata, wsvqa->version);
break;
}
}
pkt->stream_index = wsvqa->audio_stream_index;
switch (chunk_type) {
case SND1_TAG:
/* unpacked size is stored in header */
if(pkt->data)
pkt->duration = AV_RL16(pkt->data) / wsvqa->channels;
break;
case SND2_TAG:
/* 2 samples/byte, 1 or 2 samples per frame depending on stereo */
pkt->duration = (chunk_size * 2) / wsvqa->channels;
break;
}
break;
case VQFR_TAG:
pkt->stream_index = wsvqa->video_stream_index;
pkt->duration = 1;
break;
}
/* stay on 16-bit alignment */
if (skip_byte)
avio_skip(pb, 1);
return ret;
} else {
switch(chunk_type){
case CMDS_TAG:
break;
default:
av_log(s, AV_LOG_INFO, "Skipping unknown chunk 0x%08X\n", chunk_type);
}
avio_skip(pb, chunk_size + skip_byte);
}
}
return ret;
}
static int redspark_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
RedSparkContext *redspark = s->priv_data;
AVCodecParameters *par;
GetByteContext gbc;
int i, coef_off, ret = 0;
uint32_t key, data;
uint8_t header[HEADER_SIZE];
AVStream *st;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
par = st->codecpar;
/* Decrypt header */
data = avio_rb32(pb);
key = data ^ 0x52656453;
data ^= key;
AV_WB32(header, data);
key = rol(key, 11);
for (i = 4; i < HEADER_SIZE; i += 4) {
key += rol(key, 3);
data = avio_rb32(pb) ^ key;
AV_WB32(header + i, data);
}
par->codec_id = AV_CODEC_ID_ADPCM_THP;
par->codec_type = AVMEDIA_TYPE_AUDIO;
bytestream2_init(&gbc, header, HEADER_SIZE);
bytestream2_seek(&gbc, 0x3c, SEEK_SET);
par->sample_rate = bytestream2_get_be32u(&gbc);
if (par->sample_rate <= 0 || par->sample_rate > 96000) {
av_log(s, AV_LOG_ERROR, "Invalid sample rate: %d\n", par->sample_rate);
return AVERROR_INVALIDDATA;
}
st->duration = bytestream2_get_be32u(&gbc) * 14;
redspark->samples_count = 0;
bytestream2_skipu(&gbc, 10);
par->channels = bytestream2_get_byteu(&gbc);
if (!par->channels) {
return AVERROR_INVALIDDATA;
}
coef_off = 0x54 + par->channels * 8;
if (bytestream2_get_byteu(&gbc)) // Loop flag
coef_off += 16;
if (coef_off + par->channels * (32 + 14) > HEADER_SIZE) {
return AVERROR_INVALIDDATA;
}
if (ff_alloc_extradata(par, 32 * par->channels)) {
return AVERROR_INVALIDDATA;
}
/* Get the ADPCM table */
bytestream2_seek(&gbc, coef_off, SEEK_SET);
for (i = 0; i < par->channels; i++) {
if (bytestream2_get_bufferu(&gbc, par->extradata + i * 32, 32) != 32) {
return AVERROR_INVALIDDATA;
}
bytestream2_skipu(&gbc, 14);
}
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
return ret;
}
static int tta_read_header(AVFormatContext *s)
{
TTAContext *c = s->priv_data;
AVStream *st;
int i, channels, bps, samplerate;
uint64_t framepos, start_offset;
uint32_t nb_samples, crc;
ff_id3v1_read(s);
start_offset = avio_tell(s->pb);
ffio_init_checksum(s->pb, tta_check_crc, UINT32_MAX);
if (avio_rl32(s->pb) != AV_RL32("TTA1"))
return AVERROR_INVALIDDATA;
avio_skip(s->pb, 2); // FIXME: flags
channels = avio_rl16(s->pb);
bps = avio_rl16(s->pb);
samplerate = avio_rl32(s->pb);
if(samplerate <= 0 || samplerate > 1000000){
av_log(s, AV_LOG_ERROR, "nonsense samplerate\n");
return AVERROR_INVALIDDATA;
}
nb_samples = avio_rl32(s->pb);
if (!nb_samples) {
av_log(s, AV_LOG_ERROR, "invalid number of samples\n");
return AVERROR_INVALIDDATA;
}
crc = ffio_get_checksum(s->pb) ^ UINT32_MAX;
if (crc != avio_rl32(s->pb)) {
av_log(s, AV_LOG_ERROR, "Header CRC error\n");
return AVERROR_INVALIDDATA;
}
c->frame_size = samplerate * 256 / 245;
c->last_frame_size = nb_samples % c->frame_size;
if (!c->last_frame_size)
c->last_frame_size = c->frame_size;
c->totalframes = nb_samples / c->frame_size + (c->last_frame_size < c->frame_size);
c->currentframe = 0;
if(c->totalframes >= UINT_MAX/sizeof(uint32_t) || c->totalframes <= 0){
av_log(s, AV_LOG_ERROR, "totalframes %d invalid\n", c->totalframes);
return AVERROR_INVALIDDATA;
}
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avpriv_set_pts_info(st, 64, 1, samplerate);
st->start_time = 0;
st->duration = nb_samples;
framepos = avio_tell(s->pb) + 4*c->totalframes + 4;
if (ff_alloc_extradata(st->codec, avio_tell(s->pb) - start_offset))
return AVERROR(ENOMEM);
avio_seek(s->pb, start_offset, SEEK_SET);
avio_read(s->pb, st->codec->extradata, st->codec->extradata_size);
ffio_init_checksum(s->pb, tta_check_crc, UINT32_MAX);
for (i = 0; i < c->totalframes; i++) {
uint32_t size = avio_rl32(s->pb);
av_add_index_entry(st, framepos, i * c->frame_size, size, 0,
AVINDEX_KEYFRAME);
framepos += size;
}
crc = ffio_get_checksum(s->pb) ^ UINT32_MAX;
if (crc != avio_rl32(s->pb)) {
av_log(s, AV_LOG_ERROR, "Seek table CRC error\n");
return AVERROR_INVALIDDATA;
}
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_TTA;
st->codec->channels = channels;
st->codec->sample_rate = samplerate;
st->codec->bits_per_coded_sample = bps;
if (s->pb->seekable) {
int64_t pos = avio_tell(s->pb);
ff_ape_parse_tag(s);
avio_seek(s->pb, pos, SEEK_SET);
}
return 0;
}
static int flic_read_header(AVFormatContext *s)
{
FlicDemuxContext *flic = s->priv_data;
AVIOContext *pb = s->pb;
unsigned char header[FLIC_HEADER_SIZE];
AVStream *st, *ast;
int speed;
int magic_number;
unsigned char preamble[FLIC_PREAMBLE_SIZE];
flic->frame_number = 0;
/* load the whole header and pull out the width and height */
if (avio_read(pb, header, FLIC_HEADER_SIZE) != FLIC_HEADER_SIZE)
return AVERROR(EIO);
magic_number = AV_RL16(&header[4]);
speed = AV_RL32(&header[0x10]);
if (speed == 0)
speed = FLIC_DEFAULT_SPEED;
/* initialize the decoder streams */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
flic->video_stream_index = st->index;
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->codec_id = AV_CODEC_ID_FLIC;
st->codecpar->codec_tag = 0; /* no fourcc */
st->codecpar->width = AV_RL16(&header[0x08]);
st->codecpar->height = AV_RL16(&header[0x0A]);
if (!st->codecpar->width || !st->codecpar->height) {
/* Ugly hack needed for the following sample: */
/* http://samples.mplayerhq.hu/fli-flc/fli-bugs/specular.flc */
av_log(s, AV_LOG_WARNING,
"File with no specified width/height. Trying 640x480.\n");
st->codecpar->width = 640;
st->codecpar->height = 480;
}
/* send over the whole 128-byte FLIC header */
if (ff_alloc_extradata(st->codecpar, FLIC_HEADER_SIZE))
return AVERROR(ENOMEM);
memcpy(st->codecpar->extradata, header, FLIC_HEADER_SIZE);
/* peek at the preamble to detect TFTD videos - they seem to always start with an audio chunk */
if (avio_read(pb, preamble, FLIC_PREAMBLE_SIZE) != FLIC_PREAMBLE_SIZE) {
av_log(s, AV_LOG_ERROR, "Failed to peek at preamble\n");
return AVERROR(EIO);
}
avio_seek(pb, -FLIC_PREAMBLE_SIZE, SEEK_CUR);
/* Time to figure out the framerate:
* If the first preamble's magic number is 0xAAAA then this file is from
* X-COM: Terror from the Deep. If on the other hand there is a FLIC chunk
* magic number at offset 0x10 assume this file is from Magic Carpet instead.
* If neither of the above is true then this is a normal FLIC file.
*/
if (AV_RL16(&preamble[4]) == FLIC_TFTD_CHUNK_AUDIO) {
/* TFTD videos have an extra 22050 Hz 8-bit mono audio stream */
ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
flic->audio_stream_index = ast->index;
/* all audio frames are the same size, so use the size of the first chunk for block_align */
ast->codecpar->block_align = AV_RL32(&preamble[0]);
ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
ast->codecpar->codec_tag = 0;
ast->codecpar->sample_rate = FLIC_TFTD_SAMPLE_RATE;
ast->codecpar->channels = 1;
ast->codecpar->bit_rate = st->codecpar->sample_rate * 8;
ast->codecpar->bits_per_coded_sample = 8;
ast->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
ast->codecpar->extradata_size = 0;
/* Since the header information is incorrect we have to figure out the
* framerate using block_align and the fact that the audio is 22050 Hz.
* We usually have two cases: 2205 -> 10 fps and 1470 -> 15 fps */
avpriv_set_pts_info(st, 64, ast->codecpar->block_align, FLIC_TFTD_SAMPLE_RATE);
avpriv_set_pts_info(ast, 64, 1, FLIC_TFTD_SAMPLE_RATE);
} else if (AV_RL16(&header[0x10]) == FLIC_CHUNK_MAGIC_1) {
avpriv_set_pts_info(st, 64, FLIC_MC_SPEED, 70);
/* rewind the stream since the first chunk is at offset 12 */
avio_seek(pb, 12, SEEK_SET);
/* send over abbreviated FLIC header chunk */
av_freep(&st->codecpar->extradata);
if (ff_alloc_extradata(st->codecpar, 12))
return AVERROR(ENOMEM);
memcpy(st->codecpar->extradata, header, 12);
} else if (magic_number == FLIC_FILE_MAGIC_1) {
avpriv_set_pts_info(st, 64, speed, 70);
} else if ((magic_number == FLIC_FILE_MAGIC_2) ||
(magic_number == FLIC_FILE_MAGIC_3)) {
avpriv_set_pts_info(st, 64, speed, 1000);
} else {
av_log(s, AV_LOG_ERROR, "Invalid or unsupported magic chunk in file\n");
return AVERROR_INVALIDDATA;
}
return 0;
}
static int rsd_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
int i, ret, version, start = 0x800;
AVCodecContext *codec;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(pb, 3); // "RSD"
version = avio_r8(pb) - '0';
codec = st->codec;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(rsd_tags, codec->codec_tag);
if (!codec->codec_id) {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), codec->codec_tag);
for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
if (codec->codec_tag == rsd_unsupported_tags[i]) {
avpriv_request_sample(s, "Codec tag: %s", tag_buf);
return AVERROR_PATCHWELCOME;
}
}
av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
return AVERROR_INVALIDDATA;
}
codec->channels = avio_rl32(pb);
if (!codec->channels)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4); // Bit depth
codec->sample_rate = avio_rl32(pb);
if (!codec->sample_rate)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4); // Unknown
switch (codec->codec_id) {
case AV_CODEC_ID_ADPCM_PSX:
codec->block_align = 16 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_RAD:
codec->block_align = 20 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (version == 2)
start = avio_rl32(pb);
codec->bits_per_coded_sample = 4;
codec->block_align = 36 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP:
if (st->codec->codec_tag == MKTAG('G','A','D','P')) {
/* RSD3GADP is mono, so only alloc enough memory
to store the coeff table for a single channel. */
start = avio_rl32(pb);
if ((ret = ff_get_extradata(codec, s->pb, 32)) < 0)
return ret;
for (i = 0; i < 16; i++)
AV_WB16(codec->extradata + i * 2, AV_RL16(codec->extradata + i * 2));
} else {
codec->block_align = 8 * codec->channels;
avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
if ((ret = ff_alloc_extradata(st->codec, 32 * st->codec->channels)) < 0)
return ret;
for (i = 0; i < st->codec->channels; i++) {
avio_read(s->pb, st->codec->extradata + 32 * i, 32);
avio_skip(s->pb, 8);
}
}
if (pb->seekable)
st->duration = (avio_size(pb) - start) / (8 * st->codec->channels) * 14;
break;
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16BE:
if (version != 4)
start = avio_rl32(pb);
if (pb->seekable)
st->duration = (avio_size(pb) - start) / 2 / codec->channels;
break;
}
avio_skip(pb, start - avio_tell(pb));
avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
return 0;
}
/** Read magic cookie chunk */
static int read_kuki_chunk(AVFormatContext *s, int64_t size)
{
AVIOContext *pb = s->pb;
AVStream *st = s->streams[0];
if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
return -1;
if (st->codec->codec_id == AV_CODEC_ID_AAC) {
/* The magic cookie format for AAC is an mp4 esds atom.
The lavc AAC decoder requires the data from the codec specific
description as extradata input. */
int strt, skip;
strt = avio_tell(pb);
ff_mov_read_esds(s, pb);
skip = size - (avio_tell(pb) - strt);
if (skip < 0 || !st->codec->extradata ||
st->codec->codec_id != AV_CODEC_ID_AAC) {
av_log(s, AV_LOG_ERROR, "invalid AAC magic cookie\n");
return AVERROR_INVALIDDATA;
}
avio_skip(pb, skip);
} else if (st->codec->codec_id == AV_CODEC_ID_ALAC) {
#define ALAC_PREAMBLE 12
#define ALAC_HEADER 36
#define ALAC_NEW_KUKI 24
uint8_t preamble[12];
if (size < ALAC_NEW_KUKI) {
av_log(s, AV_LOG_ERROR, "invalid ALAC magic cookie\n");
avio_skip(pb, size);
return AVERROR_INVALIDDATA;
}
if (avio_read(pb, preamble, ALAC_PREAMBLE) != ALAC_PREAMBLE) {
av_log(s, AV_LOG_ERROR, "failed to read preamble\n");
return AVERROR_INVALIDDATA;
}
av_freep(&st->codec->extradata);
if (ff_alloc_extradata(st->codec, ALAC_HEADER))
return AVERROR(ENOMEM);
/* For the old style cookie, we skip 12 bytes, then read 36 bytes.
* The new style cookie only contains the last 24 bytes of what was
* 36 bytes in the old style cookie, so we fabricate the first 12 bytes
* in that case to maintain compatibility. */
if (!memcmp(&preamble[4], "frmaalac", 8)) {
if (size < ALAC_PREAMBLE + ALAC_HEADER) {
av_log(s, AV_LOG_ERROR, "invalid ALAC magic cookie\n");
av_freep(&st->codec->extradata);
return AVERROR_INVALIDDATA;
}
if (avio_read(pb, st->codec->extradata, ALAC_HEADER) != ALAC_HEADER) {
av_log(s, AV_LOG_ERROR, "failed to read kuki header\n");
av_freep(&st->codec->extradata);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);
} else {
AV_WB32(st->codec->extradata, 36);
memcpy(&st->codec->extradata[4], "alac", 4);
AV_WB32(&st->codec->extradata[8], 0);
memcpy(&st->codec->extradata[12], preamble, 12);
if (avio_read(pb, &st->codec->extradata[24], ALAC_NEW_KUKI - 12) != ALAC_NEW_KUKI - 12) {
av_log(s, AV_LOG_ERROR, "failed to read new kuki header\n");
av_freep(&st->codec->extradata);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - ALAC_NEW_KUKI);
}
} else {
av_freep(&st->codec->extradata);
if (ff_get_extradata(st->codec, pb, size) < 0)
return AVERROR(ENOMEM);
}
return 0;
}
static int xwma_read_header(AVFormatContext *s)
{
int64_t size;
int ret = 0;
uint32_t dpds_table_size = 0;
uint32_t *dpds_table = NULL;
unsigned int tag;
AVIOContext *pb = s->pb;
AVStream *st;
XWMAContext *xwma = s->priv_data;
int i;
/* The following code is mostly copied from wav.c, with some
* minor alterations.
*/
/* check RIFF header */
tag = avio_rl32(pb);
if (tag != MKTAG('R', 'I', 'F', 'F'))
return -1;
avio_rl32(pb); /* file size */
tag = avio_rl32(pb);
if (tag != MKTAG('X', 'W', 'M', 'A'))
return -1;
/* parse fmt header */
tag = avio_rl32(pb);
if (tag != MKTAG('f', 'm', 't', ' '))
return -1;
size = avio_rl32(pb);
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
ret = ff_get_wav_header(s, pb, st->codecpar, size, 0);
if (ret < 0)
return ret;
st->need_parsing = AVSTREAM_PARSE_NONE;
/* XWMA encoder only allows a few channel/sample rate/bitrate combinations,
* but some create identical files with fake bitrate (1ch 22050hz at
* 20/48/192kbps are all 20kbps, with the exact same codec data).
* Decoder needs correct bitrate to work, so it's normalized here. */
if (st->codecpar->codec_id == AV_CODEC_ID_WMAV2) {
int ch = st->codecpar->channels;
int sr = st->codecpar->sample_rate;
int br = st->codecpar->bit_rate;
if (ch == 1) {
if (sr == 22050 && (br==48000 || br==192000))
br = 20000;
else if (sr == 32000 && (br==48000 || br==192000))
br = 20000;
else if (sr == 44100 && (br==96000 || br==192000))
br = 48000;
}
else if (ch == 2) {
if (sr == 22050 && (br==48000 || br==192000))
br = 32000;
else if (sr == 32000 && (br==192000))
br = 48000;
}
st->codecpar->bit_rate = br;
}
/* Normally xWMA can only contain WMAv2 with 1/2 channels,
* and WMAPRO with 6 channels. */
if (st->codecpar->codec_id != AV_CODEC_ID_WMAV2 &&
st->codecpar->codec_id != AV_CODEC_ID_WMAPRO) {
avpriv_request_sample(s, "Unexpected codec (tag %s; id %d)",
av_fourcc2str(st->codecpar->codec_tag),
st->codecpar->codec_id);
} else {
/* xWMA shouldn't have extradata. But the WMA codecs require it,
* so we provide our own fake extradata.
*
* First, check that there really was no extradata in the header. If
* there was, then try to use it, after asking the user to provide a
* sample of this unusual file.
*/
if (st->codecpar->extradata_size != 0) {
/* Surprise, surprise: We *did* get some extradata. No idea
* if it will work, but just go on and try it, after asking
* the user for a sample.
*/
avpriv_request_sample(s, "Unexpected extradata (%d bytes)",
st->codecpar->extradata_size);
} else if (st->codecpar->codec_id == AV_CODEC_ID_WMAPRO) {
if (ff_alloc_extradata(st->codecpar, 18))
return AVERROR(ENOMEM);
memset(st->codecpar->extradata, 0, st->codecpar->extradata_size);
st->codecpar->extradata[ 0] = st->codecpar->bits_per_coded_sample;
st->codecpar->extradata[14] = 224;
} else {
if (ff_alloc_extradata(st->codecpar, 6))
return AVERROR(ENOMEM);
memset(st->codecpar->extradata, 0, st->codecpar->extradata_size);
/* setup extradata with our experimentally obtained value */
st->codecpar->extradata[4] = 31;
}
}
if (!st->codecpar->channels) {
av_log(s, AV_LOG_WARNING, "Invalid channel count: %d\n",
st->codecpar->channels);
return AVERROR_INVALIDDATA;
}
if (!st->codecpar->bits_per_coded_sample) {
av_log(s, AV_LOG_WARNING, "Invalid bits_per_coded_sample: %d\n",
st->codecpar->bits_per_coded_sample);
return AVERROR_INVALIDDATA;
}
/* set the sample rate */
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
/* parse the remaining RIFF chunks */
for (;;) {
if (pb->eof_reached) {
ret = AVERROR_EOF;
goto fail;
}
/* read next chunk tag */
tag = avio_rl32(pb);
size = avio_rl32(pb);
if (tag == MKTAG('d', 'a', 't', 'a')) {
/* We assume that the data chunk comes last. */
break;
} else if (tag == MKTAG('d','p','d','s')) {
/* Quoting the MSDN xWMA docs on the dpds chunk: "Contains the
* decoded packet cumulative data size array, each element is the
* number of bytes accumulated after the corresponding xWMA packet
* is decoded in order."
*
* Each packet has size equal to st->codecpar->block_align, which in
* all cases I saw so far was always 2230. Thus, we can use the
* dpds data to compute a seeking index.
*/
/* Error out if there is more than one dpds chunk. */
if (dpds_table) {
av_log(s, AV_LOG_ERROR, "two dpds chunks present\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}
/* Compute the number of entries in the dpds chunk. */
if (size & 3) { /* Size should be divisible by four */
av_log(s, AV_LOG_WARNING,
"dpds chunk size %"PRId64" not divisible by 4\n", size);
}
dpds_table_size = size / 4;
if (dpds_table_size == 0 || dpds_table_size >= INT_MAX / 4) {
av_log(s, AV_LOG_ERROR,
"dpds chunk size %"PRId64" invalid\n", size);
return AVERROR_INVALIDDATA;
}
/* Allocate some temporary storage to keep the dpds data around.
* for processing later on.
*/
dpds_table = av_malloc_array(dpds_table_size, sizeof(uint32_t));
if (!dpds_table) {
return AVERROR(ENOMEM);
}
for (i = 0; i < dpds_table_size; ++i) {
dpds_table[i] = avio_rl32(pb);
size -= 4;
}
}
avio_skip(pb, size);
}
/* Determine overall data length */
if (size < 0) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (!size) {
xwma->data_end = INT64_MAX;
} else
xwma->data_end = avio_tell(pb) + size;
if (dpds_table && dpds_table_size) {
int64_t cur_pos;
const uint32_t bytes_per_sample
= (st->codecpar->channels * st->codecpar->bits_per_coded_sample) >> 3;
/* Estimate the duration from the total number of output bytes. */
const uint64_t total_decoded_bytes = dpds_table[dpds_table_size - 1];
if (!bytes_per_sample) {
av_log(s, AV_LOG_ERROR,
"Invalid bits_per_coded_sample %d for %d channels\n",
st->codecpar->bits_per_coded_sample, st->codecpar->channels);
ret = AVERROR_INVALIDDATA;
goto fail;
}
st->duration = total_decoded_bytes / bytes_per_sample;
/* Use the dpds data to build a seek table. We can only do this after
* we know the offset to the data chunk, as we need that to determine
* the actual offset to each input block.
* Note: If we allowed ourselves to assume that the data chunk always
* follows immediately after the dpds block, we could of course guess
* the data block's start offset already while reading the dpds chunk.
* I decided against that, just in case other chunks ever are
* discovered.
*/
cur_pos = avio_tell(pb);
for (i = 0; i < dpds_table_size; ++i) {
/* From the number of output bytes that would accumulate in the
* output buffer after decoding the first (i+1) packets, we compute
* an offset / timestamp pair.
*/
av_add_index_entry(st,
cur_pos + (i+1) * st->codecpar->block_align, /* pos */
dpds_table[i] / bytes_per_sample, /* timestamp */
st->codecpar->block_align, /* size */
0, /* duration */
AVINDEX_KEYFRAME);
}
} else if (st->codecpar->bit_rate) {
/**
* read rl2 header data and setup the avstreams
* @param s demuxer context
* @return 0 on success, AVERROR otherwise
*/
static av_cold int rl2_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
AVStream *st;
unsigned int frame_count;
unsigned int audio_frame_counter = 0;
unsigned int video_frame_counter = 0;
unsigned int back_size;
unsigned short sound_rate;
unsigned short rate;
unsigned short channels;
unsigned short def_sound_size;
unsigned int signature;
unsigned int pts_den = 11025; /* video only case */
unsigned int pts_num = 1103;
unsigned int* chunk_offset = NULL;
int* chunk_size = NULL;
int* audio_size = NULL;
int i;
int ret = 0;
avio_skip(pb,4); /* skip FORM tag */
back_size = avio_rl32(pb); /**< get size of the background frame */
signature = avio_rb32(pb);
avio_skip(pb, 4); /* data size */
frame_count = avio_rl32(pb);
/* disallow back_sizes and frame_counts that may lead to overflows later */
if(back_size > INT_MAX/2 || frame_count > INT_MAX / sizeof(uint32_t))
return AVERROR_INVALIDDATA;
avio_skip(pb, 2); /* encoding mentod */
sound_rate = avio_rl16(pb);
rate = avio_rl16(pb);
channels = avio_rl16(pb);
def_sound_size = avio_rl16(pb);
/** setup video stream */
st = avformat_new_stream(s, NULL);
if(!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_RL2;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = 320;
st->codec->height = 200;
/** allocate and fill extradata */
st->codec->extradata_size = EXTRADATA1_SIZE;
if(signature == RLV3_TAG && back_size > 0)
st->codec->extradata_size += back_size;
if(ff_alloc_extradata(st->codec, st->codec->extradata_size))
return AVERROR(ENOMEM);
if(avio_read(pb,st->codec->extradata,st->codec->extradata_size) !=
st->codec->extradata_size)
return AVERROR(EIO);
/** setup audio stream if present */
if(sound_rate){
if (!channels || channels > 42) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", channels);
return AVERROR_INVALIDDATA;
}
pts_num = def_sound_size;
pts_den = rate;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_PCM_U8;
st->codec->codec_tag = 1;
st->codec->channels = channels;
st->codec->bits_per_coded_sample = 8;
st->codec->sample_rate = rate;
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
st->codec->bits_per_coded_sample;
st->codec->block_align = st->codec->channels *
st->codec->bits_per_coded_sample / 8;
avpriv_set_pts_info(st,32,1,rate);
}
avpriv_set_pts_info(s->streams[0], 32, pts_num, pts_den);
chunk_size = av_malloc(frame_count * sizeof(uint32_t));
audio_size = av_malloc(frame_count * sizeof(uint32_t));
chunk_offset = av_malloc(frame_count * sizeof(uint32_t));
if(!chunk_size || !audio_size || !chunk_offset){
av_free(chunk_size);
av_free(audio_size);
av_free(chunk_offset);
return AVERROR(ENOMEM);
}
/** read offset and size tables */
for(i=0; i < frame_count;i++)
chunk_size[i] = avio_rl32(pb);
for(i=0; i < frame_count;i++)
chunk_offset[i] = avio_rl32(pb);
for(i=0; i < frame_count;i++)
audio_size[i] = avio_rl32(pb) & 0xFFFF;
/** build the sample index */
for(i=0;i<frame_count;i++){
if(chunk_size[i] < 0 || audio_size[i] > chunk_size[i]){
ret = AVERROR_INVALIDDATA;
break;
}
if(sound_rate && audio_size[i]){
av_add_index_entry(s->streams[1], chunk_offset[i],
audio_frame_counter,audio_size[i], 0, AVINDEX_KEYFRAME);
audio_frame_counter += audio_size[i] / channels;
}
av_add_index_entry(s->streams[0], chunk_offset[i] + audio_size[i],
video_frame_counter,chunk_size[i]-audio_size[i],0,AVINDEX_KEYFRAME);
++video_frame_counter;
}
av_free(chunk_size);
av_free(audio_size);
av_free(chunk_offset);
return ret;
}
static int ape_tag_read_field(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
uint8_t key[1024], *value;
uint32_t size, flags;
int i, c;
size = avio_rl32(pb); /* field size */
flags = avio_rl32(pb); /* field flags */
for (i = 0; i < sizeof(key) - 1; i++) {
c = avio_r8(pb);
if (c < 0x20 || c > 0x7E)
break;
else
key[i] = c;
}
key[i] = 0;
if (c != 0) {
av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key);
return -1;
}
if (size >= UINT_MAX)
return -1;
if (flags & APE_TAG_FLAG_IS_BINARY) {
uint8_t filename[1024];
enum AVCodecID id;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
size -= avio_get_str(pb, size, filename, sizeof(filename));
if (size <= 0) {
av_log(s, AV_LOG_WARNING, "Skipping binary tag '%s'.\n", key);
return 0;
}
av_dict_set(&st->metadata, key, filename, 0);
if ((id = ff_guess_image2_codec(filename)) != AV_CODEC_ID_NONE) {
AVPacket pkt;
int ret;
ret = av_get_packet(s->pb, &pkt, size);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Error reading cover art.\n");
return ret;
}
st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = id;
st->attached_pic = pkt;
st->attached_pic.stream_index = st->index;
st->attached_pic.flags |= AV_PKT_FLAG_KEY;
} else {
if (ff_alloc_extradata(st->codec, size))
return AVERROR(ENOMEM);
if (avio_read(pb, st->codec->extradata, size) != size) {
av_freep(&st->codec->extradata);
st->codec->extradata_size = 0;
return AVERROR(EIO);
}
st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT;
}
} else {
value = av_malloc(size+1);
if (!value)
return AVERROR(ENOMEM);
c = avio_read(pb, value, size);
if (c < 0) {
av_free(value);
return c;
}
value[c] = 0;
av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
}
return 0;
}
static int genh_read_header(AVFormatContext *s)
{
unsigned start_offset, header_size, codec, coef_type, coef[2];
GENHDemuxContext *c = s->priv_data;
av_unused unsigned coef_splitted[2];
int align, ch, ret;
AVStream *st;
avio_skip(s->pb, 4);
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->channels = avio_rl32(s->pb);
if (st->codec->channels <= 0)
return AVERROR_INVALIDDATA;
if (st->codec->channels == 1)
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
else if (st->codec->channels == 2)
st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
align =
c->interleave_size = avio_rl32(s->pb);
if (align < 0 || align > INT_MAX / st->codec->channels)
return AVERROR_INVALIDDATA;
st->codec->block_align = align * st->codec->channels;
st->codec->sample_rate = avio_rl32(s->pb);
avio_skip(s->pb, 4);
st->duration = avio_rl32(s->pb);
codec = avio_rl32(s->pb);
switch (codec) {
case 0: st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX; break;
case 1:
case 11: st->codec->bits_per_coded_sample = 4;
st->codec->block_align = 36 * st->codec->channels;
st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV; break;
case 2: st->codec->codec_id = AV_CODEC_ID_ADPCM_DTK; break;
case 3: st->codec->codec_id = st->codec->block_align > 0 ?
AV_CODEC_ID_PCM_S16BE_PLANAR :
AV_CODEC_ID_PCM_S16BE; break;
case 4: st->codec->codec_id = st->codec->block_align > 0 ?
AV_CODEC_ID_PCM_S16LE_PLANAR :
AV_CODEC_ID_PCM_S16LE; break;
case 5: st->codec->codec_id = st->codec->block_align > 0 ?
AV_CODEC_ID_PCM_S8_PLANAR :
AV_CODEC_ID_PCM_S8; break;
case 6: st->codec->codec_id = AV_CODEC_ID_SDX2_DPCM; break;
case 7: ret = ff_alloc_extradata(st->codec, 2);
if (ret < 0)
return ret;
AV_WL16(st->codec->extradata, 3);
st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WS; break;
case 10: st->codec->codec_id = AV_CODEC_ID_ADPCM_AICA; break;
case 12: st->codec->codec_id = AV_CODEC_ID_ADPCM_THP; break;
case 13: st->codec->codec_id = AV_CODEC_ID_PCM_U8; break;
case 17: st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_QT; break;
default:
avpriv_request_sample(s, "codec %d", codec);
return AVERROR_PATCHWELCOME;
}
start_offset = avio_rl32(s->pb);
header_size = avio_rl32(s->pb);
if (header_size > start_offset)
return AVERROR_INVALIDDATA;
if (header_size == 0)
start_offset = 0x800;
coef[0] = avio_rl32(s->pb);
coef[1] = avio_rl32(s->pb);
c->dsp_int_type = avio_rl32(s->pb);
coef_type = avio_rl32(s->pb);
coef_splitted[0] = avio_rl32(s->pb);
coef_splitted[1] = avio_rl32(s->pb);
if (st->codec->codec_id == AV_CODEC_ID_ADPCM_THP) {
if (st->codec->channels > 2) {
avpriv_request_sample(s, "channels %d>2", st->codec->channels);
return AVERROR_PATCHWELCOME;
}
ff_alloc_extradata(st->codec, 32 * st->codec->channels);
for (ch = 0; ch < st->codec->channels; ch++) {
if (coef_type & 1) {
avpriv_request_sample(s, "coef_type & 1");
return AVERROR_PATCHWELCOME;
} else {
avio_seek(s->pb, coef[ch], SEEK_SET);
avio_read(s->pb, st->codec->extradata + 32 * ch, 32);
}
}
if (c->dsp_int_type == 1) {
st->codec->block_align = 8 * st->codec->channels;
if (c->interleave_size != 1 &&
c->interleave_size != 2 &&
c->interleave_size != 4)
return AVERROR_INVALIDDATA;
}
}
avio_skip(s->pb, start_offset - avio_tell(s->pb));
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
return 0;
}
