int
ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *rst, int codec_data_size)
{
unsigned int v;
int size;
int64_t codec_pos;
int ret;
avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb);
v = avio_rb32(pb);
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
/* ra type header */
if (rm_read_audio_stream_info(s, pb, st, rst, 0))
return -1;
} else if (v == MKBETAG('L', 'S', 'D', ':')) {
avio_seek(pb, -4, SEEK_CUR);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
return ret;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(st->codec->extradata);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
} else {
int fps;
if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
fail1:
av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n");
goto skip;
}
st->codec->codec_tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
if (st->codec->codec_id == AV_CODEC_ID_NONE)
goto fail1;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 2); // looks like bits per sample
avio_skip(pb, 4); // always zero?
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
fps = avio_rb32(pb);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
return ret;
av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
0x10000, fps, (1 << 30) - 1);
}
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_skip(pb, codec_data_size - size);
return 0;
}
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
{
enum AVCodecID codec_id;
unsigned v;
int len, tag;
int ret;
int object_type_id = avio_r8(pb);
avio_r8(pb); /* stream type */
avio_rb24(pb); /* buffer size db */
v = avio_rb32(pb);
// TODO: fix this with codecpar
#if FF_API_LAVF_AVCTX
FF_DISABLE_DEPRECATION_WARNINGS
if (v < INT32_MAX)
st->codec->rc_max_rate = v;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
st->codecpar->bit_rate = avio_rb32(pb); /* avg bitrate */
codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
if (codec_id)
st->codecpar->codec_id = codec_id;
av_log(fc, AV_LOG_TRACE, "esds object type id 0x%02x\n", object_type_id);
len = ff_mp4_read_descr(fc, pb, &tag);
if (tag == MP4DecSpecificDescrTag) {
av_log(fc, AV_LOG_TRACE, "Specific MPEG-4 header len=%d\n", len);
if (!len || (uint64_t)len > (1<<30))
return -1;
av_free(st->codecpar->extradata);
if ((ret = ff_get_extradata(fc, st->codecpar, pb, len)) < 0)
return ret;
if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
MPEG4AudioConfig cfg = {0};
avpriv_mpeg4audio_get_config(&cfg, st->codecpar->extradata,
st->codecpar->extradata_size * 8, 1);
st->codecpar->channels = cfg.channels;
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
st->codecpar->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
else if (cfg.ext_sample_rate)
st->codecpar->sample_rate = cfg.ext_sample_rate;
else
st->codecpar->sample_rate = cfg.sample_rate;
av_log(fc, AV_LOG_TRACE, "mp4a config channels %d obj %d ext obj %d "
"sample rate %d ext sample rate %d\n", st->codecpar->channels,
cfg.object_type, cfg.ext_object_type,
cfg.sample_rate, cfg.ext_sample_rate);
if (!(st->codecpar->codec_id = ff_codec_get_id(mp4_audio_types,
cfg.object_type)))
st->codecpar->codec_id = AV_CODEC_ID_AAC;
}
}
return 0;
}
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
{
enum AVCodecID codec_id;
int len, tag;
int ret;
int object_type_id = avio_r8(pb);
avio_r8(pb); /* stream type */
avio_rb24(pb); /* buffer size db */
avio_rb32(pb); /* max bitrate */
avio_rb32(pb); /* avg bitrate */
if(avcodec_is_open(st->codec)) {
av_log(fc, AV_LOG_DEBUG, "codec open in read_dec_config_descr\n");
return -1;
}
codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
if (codec_id)
st->codec->codec_id= codec_id;
av_log(fc, AV_LOG_TRACE, "esds object type id 0x%02x\n", object_type_id);
len = ff_mp4_read_descr(fc, pb, &tag);
if (tag == MP4DecSpecificDescrTag) {
av_log(fc, AV_LOG_TRACE, "Specific MPEG4 header len=%d\n", len);
if (!len || (uint64_t)len > (1<<30))
return -1;
av_free(st->codec->extradata);
if ((ret = ff_get_extradata(st->codec, pb, len)) < 0)
return ret;
if (st->codec->codec_id == AV_CODEC_ID_AAC) {
MPEG4AudioConfig cfg = {0};
avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
st->codec->extradata_size * 8, 1);
st->codec->channels = cfg.channels;
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
st->codec->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
else if (cfg.ext_sample_rate)
st->codec->sample_rate = cfg.ext_sample_rate;
else
st->codec->sample_rate = cfg.sample_rate;
av_log(fc, AV_LOG_TRACE, "mp4a config channels %d obj %d ext obj %d "
"sample rate %d ext sample rate %d\n", st->codec->channels,
cfg.object_type, cfg.ext_object_type,
cfg.sample_rate, cfg.ext_sample_rate);
if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
cfg.object_type)))
st->codec->codec_id = AV_CODEC_ID_AAC;
}
}
return 0;
}
static int read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVStream *st;
AVRational time_base;
avio_rl32(s->pb); // DKIF
avio_rl16(s->pb); // version
avio_rl16(s->pb); // header size
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_tag = avio_rl32(s->pb);
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, st->codec->codec_tag);
st->codec->width = avio_rl16(s->pb);
st->codec->height = avio_rl16(s->pb);
time_base.den = avio_rl32(s->pb);
time_base.num = avio_rl32(s->pb);
st->duration = avio_rl64(s->pb);
st->need_parsing = AVSTREAM_PARSE_HEADERS;
if (!time_base.den || !time_base.num) {
av_log(s, AV_LOG_ERROR, "Invalid frame rate\n");
return AVERROR_INVALIDDATA;
}
av_set_pts_info(st, 64, time_base.num, time_base.den);
return 0;
}
static int read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
AVStream *st;
AVRational fps;
uint32_t chunk_size;
avio_skip(pb, 4);
chunk_size = avio_rb32(pb);
if (chunk_size != 80)
return AVERROR(EIO);
avio_skip(pb, 20);
st = avformat_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->need_parsing = AVSTREAM_PARSE_HEADERS;
st->start_time = 0;
st->nb_frames =
st->duration = avio_rb32(pb);
fps = av_d2q(av_int2float(avio_rb32(pb)), INT_MAX);
st->codec->width = avio_rb32(pb);
st->codec->height = avio_rb32(pb);
avio_skip(pb, 12);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_tag = avio_rb32(pb);
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
st->codec->codec_tag);
avpriv_set_pts_info(st, 64, fps.den, fps.num);
avio_skip(pb, 20);
return 0;
}
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
{
int len, tag;
int object_type_id = avio_r8(pb);
avio_r8(pb); /* stream type */
avio_rb24(pb); /* buffer size db */
avio_rb32(pb); /* max bitrate */
avio_rb32(pb); /* avg bitrate */
st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
len = ff_mp4_read_descr(fc, pb, &tag);
if (tag == MP4DecSpecificDescrTag)
{
av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
if((uint64_t)len > (1<<30))
return -1;
av_free(st->codec->extradata);
st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
avio_read(pb, st->codec->extradata, len);
st->codec->extradata_size = len;
if (st->codec->codec_id == CODEC_ID_AAC)
{
MPEG4AudioConfig cfg;
ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
st->codec->extradata_size);
st->codec->channels = cfg.channels;
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
else if (cfg.ext_sample_rate)
st->codec->sample_rate = cfg.ext_sample_rate;
else
st->codec->sample_rate = cfg.sample_rate;
av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
"sample rate %d ext sample rate %d\n", st->codec->channels,
cfg.object_type, cfg.ext_object_type,
cfg.sample_rate, cfg.ext_sample_rate);
if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
cfg.object_type)))
st->codec->codec_id = CODEC_ID_AAC;
}
}
return 0;
}
/* au input */
static int au_read_header(AVFormatContext *s)
{
int size, bps, data_size = 0;
unsigned int tag;
AVIOContext *pb = s->pb;
unsigned int id, channels, rate;
enum AVCodecID codec;
AVStream *st;
/* check ".snd" header */
tag = avio_rl32(pb);
if (tag != MKTAG('.', 's', 'n', 'd'))
return AVERROR_INVALIDDATA;
size = avio_rb32(pb); /* header size */
data_size = avio_rb32(pb); /* data size in bytes */
if (data_size < 0 && data_size != AU_UNKNOWN_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid negative data size '%d' found\n", data_size);
return AVERROR_INVALIDDATA;
}
id = avio_rb32(pb);
rate = avio_rb32(pb);
channels = avio_rb32(pb);
codec = ff_codec_get_id(codec_au_tags, id);
if (!(bps = av_get_bits_per_sample(codec))) {
av_log_ask_for_sample(s, "could not determine bits per sample\n");
return AVERROR_PATCHWELCOME;
}
if (channels == 0 || channels > 64) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels %d\n", channels);
return AVERROR_INVALIDDATA;
}
if (size >= 24) {
/* skip unused data */
avio_skip(pb, size - 24);
}
/* now we are ready: build format streams */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = id;
st->codec->codec_id = codec;
st->codec->channels = channels;
st->codec->sample_rate = rate;
st->codec->block_align = FFMAX(bps * st->codec->channels / 8, 1);
if (data_size != AU_UNKNOWN_SIZE)
st->duration = (((int64_t)data_size)<<3) / (st->codec->channels * (int64_t)bps);
avpriv_set_pts_info(st, 64, 1, rate);
return 0;
}
ComponentResult FFAvi_MovieImportValidateDataRef(ff_global_ptr storage, Handle dataRef, OSType dataRefType, UInt8 *valid)
{
ComponentResult result = noErr;
DataHandler dataHandler = NULL;
uint8_t buf[PROBE_BUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE] = {0};
AVProbeData pd;
ByteIOContext *byteContext;
/* default */
*valid = 0;
/* Get a data handle and read a probe of data */
result = OpenADataHandler(dataRef, dataRefType, NULL, 0, NULL, kDataHCanRead, &dataHandler);
if(result || !dataHandler) goto bail;
pd.buf = buf;
pd.buf_size = PROBE_BUF_SIZE;
result = DataHScheduleData(dataHandler, (Ptr)pd.buf, 0, PROBE_BUF_SIZE, 0, NULL, NULL);
require_noerr(result,bail);
FFInitFFmpeg();
storage->format = av_probe_input_format(&pd, 1);
if(storage->format != NULL) {
*valid = 255; /* This means we can read the data */
/* we don't do MJPEG's Huffman tables right yet, and DV video seems to have
an aspect ratio coded in the bitstream that ffmpeg doesn't read, so let Apple's
AVI importer handle AVIs with these two video types */
if (IS_AVI(storage->componentType)) {
/* Prepare the iocontext structure */
result = url_open_dataref(&byteContext, dataRef, dataRefType, NULL, NULL, NULL);
require_noerr(result, bail);
OSType fourcc = get_avi_strf_fourcc(byteContext);
enum CodecID id = ff_codec_get_id(ff_codec_bmp_tags, BSWAP(fourcc));
if (id == CODEC_ID_MJPEG || id == CODEC_ID_DVVIDEO || id == CODEC_ID_RAWVIDEO || id == CODEC_ID_MSVIDEO1 || id == CODEC_ID_MSRLE)
*valid = 0;
url_fclose(byteContext);
}
}
bail:
if(dataHandler)
CloseComponent(dataHandler);
return result;
} /* FFAvi_MovieImportValidateDataRef() */
/* au input */
static int au_read_header(AVFormatContext *s)
{
int size;
unsigned int tag;
AVIOContext *pb = s->pb;
unsigned int id, channels, rate;
enum AVCodecID codec;
AVStream *st;
/* check ".snd" header */
tag = avio_rl32(pb);
if (tag != MKTAG('.', 's', 'n', 'd'))
return -1;
size = avio_rb32(pb); /* header size */
avio_rb32(pb); /* data size */
id = avio_rb32(pb);
rate = avio_rb32(pb);
channels = avio_rb32(pb);
codec = ff_codec_get_id(codec_au_tags, id);
if (!av_get_bits_per_sample(codec)) {
av_log_ask_for_sample(s, "could not determine bits per sample\n");
return AVERROR_INVALIDDATA;
}
if (channels == 0 || channels > 64) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels %d\n", channels);
return AVERROR_INVALIDDATA;
}
if (size >= 24) {
/* skip unused data */
avio_skip(pb, size - 24);
}
/* now we are ready: build format streams */
st = avformat_new_stream(s, NULL);
if (!st)
return -1;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = id;
st->codec->codec_id = codec;
st->codec->channels = channels;
st->codec->sample_rate = rate;
avpriv_set_pts_info(st, 64, 1, rate);
return 0;
}
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
{
enum AVCodecID id;
id = ff_codec_get_id(ff_codec_wav_tags, tag);
if (id <= 0)
return id;
if (id == AV_CODEC_ID_PCM_S16LE)
id = ff_get_pcm_codec_id(bps, 0, 0, ~1);
else if (id == AV_CODEC_ID_PCM_F32LE)
id = ff_get_pcm_codec_id(bps, 1, 0, 0);
if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
id = AV_CODEC_ID_PCM_ZORK;
return id;
}
/* au input */
static int au_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int size;
unsigned int tag;
ByteIOContext *pb = s->pb;
unsigned int id, channels, rate;
enum CodecID codec;
AVStream *st;
/* check ".snd" header */
tag = get_le32(pb);
if (tag != MKTAG('.', 's', 'n', 'd'))
return -1;
size = get_be32(pb); /* header size */
get_be32(pb); /* data size */
id = get_be32(pb);
rate = get_be32(pb);
channels = get_be32(pb);
codec = ff_codec_get_id(codec_au_tags, id);
if (!av_get_bits_per_sample(codec)) {
av_log_ask_for_sample(s, "could not determine bits per sample\n");
return AVERROR_INVALIDDATA;
}
if (size >= 24) {
/* skip unused data */
url_fseek(pb, size - 24, SEEK_CUR);
}
/* now we are ready: build format streams */
st = av_new_stream(s, 0);
if (!st)
return -1;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = id;
st->codec->codec_id = codec;
st->codec->channels = channels;
st->codec->sample_rate = rate;
av_set_pts_info(st, 64, 1, rate);
return 0;
}
static int rso_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
int id, rate, bps;
unsigned int size;
enum AVCodecID codec;
AVStream *st;
id = avio_rb16(pb);
size = avio_rb16(pb);
rate = avio_rb16(pb);
avio_rb16(pb); /* play mode ? (0x0000 = don't loop) */
codec = ff_codec_get_id(ff_codec_rso_tags, id);
if (codec == AV_CODEC_ID_ADPCM_IMA_WAV) {
av_log(s, AV_LOG_ERROR, "ADPCM in RSO not implemented\n");
return AVERROR_PATCHWELCOME;
}
bps = av_get_bits_per_sample(codec);
if (!bps) {
av_log_ask_for_sample(s, "could not determine bits per sample\n");
return AVERROR_INVALIDDATA;
}
/* now we are ready: build format streams */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->duration = (size * 8) / bps;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = id;
st->codec->codec_id = codec;
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
st->codec->sample_rate = rate;
avpriv_set_pts_info(st, 64, 1, rate);
return 0;
}
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
{
enum AVCodecID id;
id = ff_codec_get_id(ff_codec_wav_tags, tag);
if (id <= 0)
return id;
/* handle specific u8 codec */
if (id == AV_CODEC_ID_PCM_S16LE && bps == 8)
id = AV_CODEC_ID_PCM_U8;
if (id == AV_CODEC_ID_PCM_S16LE && bps == 24)
id = AV_CODEC_ID_PCM_S24LE;
if (id == AV_CODEC_ID_PCM_S16LE && bps == 32)
id = AV_CODEC_ID_PCM_S32LE;
if (id == AV_CODEC_ID_PCM_F32LE && bps == 64)
id = AV_CODEC_ID_PCM_F64LE;
if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
id = AV_CODEC_ID_PCM_ZORK;
return id;
}
static int ast_read_header(AVFormatContext *s)
{
int depth;
AVStream *st;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(s->pb, 8);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = ff_codec_get_id(ff_codec_ast_tags, avio_rb16(s->pb));
depth = avio_rb16(s->pb);
if (depth != 16) {
avpriv_request_sample(s, "depth %d", depth);
return AVERROR_INVALIDDATA;
}
st->codec->channels = avio_rb16(s->pb);
if (!st->codec->channels)
return AVERROR_INVALIDDATA;
if (st->codec->channels == 2)
st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
else if (st->codec->channels == 4)
st->codec->channel_layout = AV_CH_LAYOUT_4POINT0;
avio_skip(s->pb, 2);
st->codec->sample_rate = avio_rb32(s->pb);
if (st->codec->sample_rate <= 0)
return AVERROR_INVALIDDATA;
st->start_time = 0;
st->duration = avio_rb32(s->pb);
avio_skip(s->pb, 40);
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
return 0;
}
/** Read audio description chunk */
static int read_desc_chunk(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
CafContext *caf = s->priv_data;
AVStream *st;
int flags;
/* new audio stream */
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
/* parse format description */
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->sample_rate = av_int2double(avio_rb64(pb));
st->codecpar->codec_tag = avio_rb32(pb);
flags = avio_rb32(pb);
caf->bytes_per_packet = avio_rb32(pb);
st->codecpar->block_align = caf->bytes_per_packet;
caf->frames_per_packet = avio_rb32(pb);
st->codecpar->channels = avio_rb32(pb);
st->codecpar->bits_per_coded_sample = avio_rb32(pb);
/* calculate bit rate for constant size packets */
if (caf->frames_per_packet > 0 && caf->bytes_per_packet > 0) {
st->codecpar->bit_rate = (uint64_t)st->codecpar->sample_rate * (uint64_t)caf->bytes_per_packet * 8
/ (uint64_t)caf->frames_per_packet;
} else {
st->codecpar->bit_rate = 0;
}
/* determine codec */
if (st->codecpar->codec_tag == MKBETAG('l','p','c','m'))
st->codecpar->codec_id = ff_mov_get_lpcm_codec_id(st->codecpar->bits_per_coded_sample, (flags ^ 0x2) | 0x4);
else
st->codecpar->codec_id = ff_codec_get_id(ff_codec_caf_tags, st->codecpar->codec_tag);
return 0;
}
int
voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
{
VocDecContext *voc = s->priv_data;
AVCodecContext *dec = st->codec;
ByteIOContext *pb = s->pb;
VocType type;
int size;
int sample_rate = 0;
int channels = 1;
while (!voc->remaining_size) {
type = get_byte(pb);
if (type == VOC_TYPE_EOF)
return AVERROR(EIO);
voc->remaining_size = get_le24(pb);
if (!voc->remaining_size) {
if (url_is_streamed(s->pb))
return AVERROR(EIO);
voc->remaining_size = url_fsize(pb) - url_ftell(pb);
}
max_size -= 4;
switch (type) {
case VOC_TYPE_VOICE_DATA:
dec->sample_rate = 1000000 / (256 - get_byte(pb));
if (sample_rate)
dec->sample_rate = sample_rate;
dec->channels = channels;
dec->codec_id = ff_codec_get_id(ff_voc_codec_tags, get_byte(pb));
dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
voc->remaining_size -= 2;
max_size -= 2;
channels = 1;
break;
case VOC_TYPE_VOICE_DATA_CONT:
break;
case VOC_TYPE_EXTENDED:
sample_rate = get_le16(pb);
get_byte(pb);
channels = get_byte(pb) + 1;
sample_rate = 256000000 / (channels * (65536 - sample_rate));
voc->remaining_size = 0;
max_size -= 4;
break;
case VOC_TYPE_NEW_VOICE_DATA:
dec->sample_rate = get_le32(pb);
dec->bits_per_coded_sample = get_byte(pb);
dec->channels = get_byte(pb);
dec->codec_id = ff_codec_get_id(ff_voc_codec_tags, get_le16(pb));
url_fskip(pb, 4);
voc->remaining_size -= 12;
max_size -= 12;
break;
default:
url_fskip(pb, voc->remaining_size);
max_size -= voc->remaining_size;
voc->remaining_size = 0;
break;
}
}
dec->bit_rate = dec->sample_rate * dec->bits_per_coded_sample;
if (max_size <= 0)
max_size = 2048;
size = FFMIN(voc->remaining_size, max_size);
voc->remaining_size -= size;
return av_get_packet(pb, pkt, size);
}
/* Returns the number of sound data frames or negative on error */
static unsigned int get_aiff_header(AVFormatContext *s, int size,
unsigned version)
{
AVIOContext *pb = s->pb;
AVCodecContext *codec = s->streams[0]->codec;
AIFFInputContext *aiff = s->priv_data;
int exp;
uint64_t val;
double sample_rate;
unsigned int num_frames;
if (size & 1)
size++;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->channels = avio_rb16(pb);
num_frames = avio_rb32(pb);
codec->bits_per_coded_sample = avio_rb16(pb);
exp = avio_rb16(pb);
val = avio_rb64(pb);
sample_rate = ldexp(val, exp - 16383 - 63);
codec->sample_rate = sample_rate;
size -= 18;
/* Got an AIFF-C? */
if (version == AIFF_C_VERSION1) {
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(ff_codec_aiff_tags, codec->codec_tag);
switch (codec->codec_id) {
case CODEC_ID_PCM_S16BE:
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
aiff->block_duration = 1;
break;
case CODEC_ID_ADPCM_IMA_QT:
codec->block_align = 34*codec->channels;
aiff->block_duration = 64;
break;
case CODEC_ID_MACE3:
codec->block_align = 2*codec->channels;
aiff->block_duration = 6;
break;
case CODEC_ID_MACE6:
codec->block_align = 1*codec->channels;
aiff->block_duration = 6;
break;
case CODEC_ID_GSM:
codec->block_align = 33;
aiff->block_duration = 160;
break;
case CODEC_ID_QCELP:
codec->block_align = 35;
aiff->block_duration = 160;
break;
default:
break;
}
size -= 4;
} else {
/* Need the codec type */
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
aiff->block_duration = 1;
}
/* Block align needs to be computed in all cases, as the definition
* is specific to applications -> here we use the WAVE format definition */
if (!codec->block_align)
codec->block_align = (codec->bits_per_coded_sample * codec->channels) >> 3;
codec->bit_rate = codec->sample_rate * (codec->block_align << 3) /
aiff->block_duration;
/* Chunk is over */
if (size)
avio_skip(pb, size);
return num_frames;
}
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *ast, int read_all)
{
char buf[256];
uint32_t version;
int ret;
/* ra type header */
version = avio_rb16(pb); /* version */
if (version == 3) {
unsigned bytes_per_minute;
int header_size = avio_rb16(pb);
int64_t startpos = avio_tell(pb);
avio_skip(pb, 8);
bytes_per_minute = avio_rb16(pb);
avio_skip(pb, 4);
rm_read_metadata(s, pb, 0);
if ((startpos + header_size) >= avio_tell(pb) + 2) {
// fourcc (should always be "lpcJ")
avio_r8(pb);
get_str8(pb, buf, sizeof(buf));
}
// Skip extra header crap (this should never happen)
if ((startpos + header_size) > avio_tell(pb))
avio_skip(pb, header_size + startpos - avio_tell(pb));
if (bytes_per_minute)
st->codec->bit_rate = 8LL * bytes_per_minute / 60;
st->codec->sample_rate = 8000;
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_RA_144;
ast->deint_id = DEINT_ID_INT0;
} else {
int flavor, sub_packet_h, coded_framesize, sub_packet_size;
int codecdata_length;
unsigned bytes_per_minute;
/* old version (4) */
avio_skip(pb, 2); /* unused */
avio_rb32(pb); /* .ra4 */
avio_rb32(pb); /* data size */
avio_rb16(pb); /* version2 */
avio_rb32(pb); /* header size */
flavor= avio_rb16(pb); /* add codec info / flavor */
ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
avio_rb32(pb); /* ??? */
bytes_per_minute = avio_rb32(pb);
if (version == 4) {
if (bytes_per_minute)
st->codec->bit_rate = 8LL * bytes_per_minute / 60;
}
avio_rb32(pb); /* ??? */
ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
st->codec->block_align= avio_rb16(pb); /* frame size */
ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
avio_rb16(pb); /* ??? */
if (version == 5) {
avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
}
st->codec->sample_rate = avio_rb16(pb);
avio_rb32(pb);
st->codec->channels = avio_rb16(pb);
if (version == 5) {
ast->deint_id = avio_rl32(pb);
avio_read(pb, buf, 4);
buf[4] = 0;
} else {
AV_WL32(buf, 0);
get_str8(pb, buf, sizeof(buf)); /* desc */
ast->deint_id = AV_RL32(buf);
get_str8(pb, buf, sizeof(buf)); /* desc */
}
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(buf);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
switch (st->codec->codec_id) {
case AV_CODEC_ID_AC3:
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
case AV_CODEC_ID_RA_288:
st->codec->extradata_size= 0;
ast->audio_framesize = st->codec->block_align;
st->codec->block_align = coded_framesize;
break;
case AV_CODEC_ID_COOK:
st->need_parsing = AVSTREAM_PARSE_HEADERS;
case AV_CODEC_ID_ATRAC3:
case AV_CODEC_ID_SIPR:
if (read_all) {
codecdata_length = 0;
} else {
avio_rb16(pb); avio_r8(pb);
if (version == 5)
avio_r8(pb);
codecdata_length = avio_rb32(pb);
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
return -1;
}
}
ast->audio_framesize = st->codec->block_align;
if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
if (flavor > 3) {
av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
flavor);
return -1;
}
st->codec->block_align = ff_sipr_subpk_size[flavor];
} else {
if(sub_packet_size <= 0){
av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
return -1;
}
st->codec->block_align = ast->sub_packet_size;
}
if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
return ret;
break;
case AV_CODEC_ID_AAC:
avio_rb16(pb); avio_r8(pb);
if (version == 5)
avio_r8(pb);
codecdata_length = avio_rb32(pb);
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
return -1;
}
if (codecdata_length >= 1) {
avio_r8(pb);
if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
return ret;
}
break;
}
switch (ast->deint_id) {
case DEINT_ID_INT4:
if (ast->coded_framesize > ast->audio_framesize ||
sub_packet_h <= 1 ||
ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
return AVERROR_INVALIDDATA;
if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
avpriv_request_sample(s, "mismatching interleaver parameters");
return AVERROR_INVALIDDATA;
}
break;
case DEINT_ID_GENR:
if (ast->sub_packet_size <= 0 ||
ast->sub_packet_size > ast->audio_framesize)
return AVERROR_INVALIDDATA;
if (ast->audio_framesize % ast->sub_packet_size)
return AVERROR_INVALIDDATA;
break;
case DEINT_ID_SIPR:
case DEINT_ID_INT0:
case DEINT_ID_VBRS:
case DEINT_ID_VBRF:
break;
default:
av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
return AVERROR_INVALIDDATA;
}
if (ast->deint_id == DEINT_ID_INT4 ||
ast->deint_id == DEINT_ID_GENR ||
ast->deint_id == DEINT_ID_SIPR) {
if (st->codec->block_align <= 0 ||
ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
ast->audio_framesize * sub_packet_h < st->codec->block_align)
return AVERROR_INVALIDDATA;
if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
return AVERROR(ENOMEM);
}
if (read_all) {
avio_r8(pb);
avio_r8(pb);
avio_r8(pb);
rm_read_metadata(s, pb, 0);
}
}
return 0;
}
int
ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *rst, int codec_data_size, const uint8_t *mime)
{
unsigned int v;
int size;
int64_t codec_pos;
int ret;
if (codec_data_size < 0)
return AVERROR_INVALIDDATA;
avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb);
v = avio_rb32(pb);
if (v == MKBETAG('M', 'L', 'T', 'I')) {
int number_of_streams = avio_rb16(pb);
int number_of_mdpr;
int i;
for (i = 0; i<number_of_streams; i++)
avio_rb16(pb);
number_of_mdpr = avio_rb16(pb);
if (number_of_mdpr != 1) {
avpriv_request_sample(s, "MLTI with multiple MDPR");
}
avio_rb32(pb);
v = avio_rb32(pb);
}
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
/* ra type header */
if (rm_read_audio_stream_info(s, pb, st, rst, 0))
return -1;
} else if (v == MKBETAG('L', 'S', 'D', ':')) {
avio_seek(pb, -4, SEEK_CUR);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
return ret;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(st->codec->extradata);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
} else if(mime && !strcmp(mime, "logical-fileinfo")){
int stream_count, rule_count, property_count, i;
ff_free_stream(s, st);
if (avio_rb16(pb) != 0) {
av_log(s, AV_LOG_WARNING, "Unsupported version\n");
goto skip;
}
stream_count = avio_rb16(pb);
avio_skip(pb, 6*stream_count);
rule_count = avio_rb16(pb);
avio_skip(pb, 2*rule_count);
property_count = avio_rb16(pb);
for(i=0; i<property_count; i++){
uint8_t name[128], val[128];
avio_rb32(pb);
if (avio_rb16(pb) != 0) {
av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
goto skip; //FIXME skip just this one
}
get_str8(pb, name, sizeof(name));
switch(avio_rb32(pb)) {
case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
av_dict_set(&s->metadata, name, val, 0);
break;
default: avio_skip(pb, avio_rb16(pb));
}
}
} else {
int fps;
if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
fail1:
av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
goto skip;
}
st->codec->codec_tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
if (st->codec->codec_id == AV_CODEC_ID_NONE)
goto fail1;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 2); // looks like bits per sample
avio_skip(pb, 4); // always zero?
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
fps = avio_rb32(pb);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
return ret;
if (fps > 0) {
av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
0x10000, fps, (1 << 30) - 1);
#if FF_API_R_FRAME_RATE
st->r_frame_rate = st->avg_frame_rate;
#endif
} else if (s->error_recognition & AV_EF_EXPLODE) {
av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
return AVERROR_INVALIDDATA;
}
}
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_skip(pb, codec_data_size - size);
return 0;
}
static int avisynth_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVISynthContext *avs = s->priv_data;
HRESULT res;
AVIFILEINFO info;
DWORD id;
AVStream *st;
AVISynthStream *stream;
AVIFileInit();
res = AVIFileOpen(&avs->file, s->filename, OF_READ|OF_SHARE_DENY_WRITE, NULL);
if (res != S_OK)
{
av_log(s, AV_LOG_ERROR, "AVIFileOpen failed with error %ld", res);
AVIFileExit();
return -1;
}
res = AVIFileInfo(avs->file, &info, sizeof(info));
if (res != S_OK)
{
av_log(s, AV_LOG_ERROR, "AVIFileInfo failed with error %ld", res);
AVIFileExit();
return -1;
}
avs->streams = av_mallocz(info.dwStreams * sizeof(AVISynthStream));
for (id=0; id<info.dwStreams; id++)
{
stream = &avs->streams[id];
stream->read = 0;
if (AVIFileGetStream(avs->file, &stream->handle, 0, id) == S_OK)
{
if (AVIStreamInfo(stream->handle, &stream->info, sizeof(stream->info)) == S_OK)
{
if (stream->info.fccType == streamtypeAUDIO)
{
WAVEFORMATEX wvfmt;
LONG struct_size = sizeof(WAVEFORMATEX);
if (AVIStreamReadFormat(stream->handle, 0, &wvfmt, &struct_size) != S_OK)
continue;
st = av_new_stream(s, id);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->block_align = wvfmt.nBlockAlign;
st->codec->channels = wvfmt.nChannels;
st->codec->sample_rate = wvfmt.nSamplesPerSec;
st->codec->bit_rate = wvfmt.nAvgBytesPerSec * 8;
st->codec->bits_per_coded_sample = wvfmt.wBitsPerSample;
stream->chunck_samples = wvfmt.nSamplesPerSec * (uint64_t)info.dwScale / (uint64_t)info.dwRate;
stream->chunck_size = stream->chunck_samples * wvfmt.nChannels * wvfmt.wBitsPerSample / 8;
st->codec->codec_tag = wvfmt.wFormatTag;
st->codec->codec_id = ff_wav_codec_get_id(wvfmt.wFormatTag, st->codec->bits_per_coded_sample);
}
else if (stream->info.fccType == streamtypeVIDEO)
{
BITMAPINFO imgfmt;
LONG struct_size = sizeof(BITMAPINFO);
stream->chunck_size = stream->info.dwSampleSize;
stream->chunck_samples = 1;
if (AVIStreamReadFormat(stream->handle, 0, &imgfmt, &struct_size) != S_OK)
continue;
st = av_new_stream(s, id);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->r_frame_rate.num = stream->info.dwRate;
st->r_frame_rate.den = stream->info.dwScale;
st->codec->width = imgfmt.bmiHeader.biWidth;
st->codec->height = imgfmt.bmiHeader.biHeight;
st->codec->bits_per_coded_sample = imgfmt.bmiHeader.biBitCount;
st->codec->bit_rate = (uint64_t)stream->info.dwSampleSize * (uint64_t)stream->info.dwRate * 8 / (uint64_t)stream->info.dwScale;
st->codec->codec_tag = imgfmt.bmiHeader.biCompression;
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, imgfmt.bmiHeader.biCompression);
st->duration = stream->info.dwLength;
}
else
{
AVIStreamRelease(stream->handle);
continue;
}
avs->nb_streams++;
st->codec->stream_codec_tag = stream->info.fccHandler;
av_set_pts_info(st, 64, info.dwScale, info.dwRate);
st->start_time = stream->info.dwStart;
}
}
}
return 0;
}
int
voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
{
VocDecContext *voc = s->priv_data;
AVCodecContext *dec = st->codec;
AVIOContext *pb = s->pb;
VocType type;
int size, tmp_codec=-1;
int sample_rate = 0;
int channels = 1;
while (!voc->remaining_size) {
type = avio_r8(pb);
if (type == VOC_TYPE_EOF)
return AVERROR(EIO);
voc->remaining_size = avio_rl24(pb);
if (!voc->remaining_size) {
if (!s->pb->seekable)
return AVERROR(EIO);
voc->remaining_size = avio_size(pb) - avio_tell(pb);
}
max_size -= 4;
switch (type) {
case VOC_TYPE_VOICE_DATA:
dec->sample_rate = 1000000 / (256 - avio_r8(pb));
if (sample_rate)
dec->sample_rate = sample_rate;
dec->channels = channels;
tmp_codec = avio_r8(pb);
dec->bits_per_coded_sample = av_get_bits_per_sample(dec->codec_id);
voc->remaining_size -= 2;
max_size -= 2;
channels = 1;
break;
case VOC_TYPE_VOICE_DATA_CONT:
break;
case VOC_TYPE_EXTENDED:
sample_rate = avio_rl16(pb);
avio_r8(pb);
channels = avio_r8(pb) + 1;
sample_rate = 256000000 / (channels * (65536 - sample_rate));
voc->remaining_size = 0;
max_size -= 4;
break;
case VOC_TYPE_NEW_VOICE_DATA:
dec->sample_rate = avio_rl32(pb);
dec->bits_per_coded_sample = avio_r8(pb);
dec->channels = avio_r8(pb);
tmp_codec = avio_rl16(pb);
avio_skip(pb, 4);
voc->remaining_size -= 12;
max_size -= 12;
break;
default:
avio_skip(pb, voc->remaining_size);
max_size -= voc->remaining_size;
voc->remaining_size = 0;
break;
}
}
if (tmp_codec >= 0) {
tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
if (dec->codec_id == CODEC_ID_NONE)
dec->codec_id = tmp_codec;
else if (dec->codec_id != tmp_codec)
av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
if (dec->codec_id == CODEC_ID_NONE) {
if (s->audio_codec_id == CODEC_ID_NONE) {
av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
return AVERROR(EINVAL);
}
av_log(s, AV_LOG_WARNING, "unknown codec tag\n");
}
}
dec->bit_rate = dec->sample_rate * dec->bits_per_coded_sample;
if (max_size <= 0)
max_size = 2048;
size = FFMIN(voc->remaining_size, max_size);
voc->remaining_size -= size;
return av_get_packet(pb, pkt, size);
}
/* Returns the number of sound data frames or negative on error */
static unsigned int get_aiff_header(AVFormatContext *s, int size,
unsigned version)
{
AVIOContext *pb = s->pb;
AVCodecContext *codec = s->streams[0]->codec;
AIFFInputContext *aiff = s->priv_data;
int exp;
uint64_t val;
double sample_rate;
unsigned int num_frames;
if (size & 1)
size++;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->channels = avio_rb16(pb);
num_frames = avio_rb32(pb);
codec->bits_per_coded_sample = avio_rb16(pb);
exp = avio_rb16(pb);
val = avio_rb64(pb);
sample_rate = ldexp(val, exp - 16383 - 63);
codec->sample_rate = sample_rate;
size -= 18;
/* get codec id for AIFF-C */
if (size < 4) {
version = AIFF;
} else if (version == AIFF_C_VERSION1) {
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(ff_codec_aiff_tags, codec->codec_tag);
size -= 4;
}
if (version != AIFF_C_VERSION1 || codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
aiff->block_duration = 1;
} else {
switch (codec->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:
codec->block_align = 34*codec->channels;
break;
case AV_CODEC_ID_MACE3:
codec->block_align = 2*codec->channels;
break;
case AV_CODEC_ID_ADPCM_G726LE:
codec->bits_per_coded_sample = 5;
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_MACE6:
codec->block_align = 1*codec->channels;
break;
case AV_CODEC_ID_GSM:
codec->block_align = 33;
break;
default:
aiff->block_duration = 1;
break;
}
if (codec->block_align > 0)
aiff->block_duration = av_get_audio_frame_duration(codec,
codec->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 (!codec->block_align)
codec->block_align = (av_get_bits_per_sample(codec->codec_id) * codec->channels) >> 3;
if (aiff->block_duration) {
codec->bit_rate = codec->sample_rate * (codec->block_align << 3) /
aiff->block_duration;
}
/* Chunk is over */
if (size)
avio_skip(pb, size);
return num_frames;
}
/**
* @brief read until we found all data needed for decoding
* @param vst video stream of which to change parameters
* @param ast video stream of which to change parameters
* @param myth set if this is a MythTVVideo format file
* @return 1 if all required codec data was found
*/
static int get_codec_data(AVIOContext *pb, AVStream *vst,
AVStream *ast, int myth) {
nuv_frametype frametype;
if (!vst && !myth)
return 1; // no codec data needed
while (!url_feof(pb)) {
int size, subtype;
frametype = avio_r8(pb);
switch (frametype) {
case NUV_EXTRADATA:
subtype = avio_r8(pb);
avio_skip(pb, 6);
size = PKTSIZE(avio_rl32(pb));
if (vst && subtype == 'R') {
vst->codec->extradata_size = size;
vst->codec->extradata = av_malloc(size);
avio_read(pb, vst->codec->extradata, size);
size = 0;
if (!myth)
return 1;
}
break;
case NUV_MYTHEXT:
avio_skip(pb, 7);
size = PKTSIZE(avio_rl32(pb));
if (size != 128 * 4)
break;
avio_rl32(pb); // version
if (vst) {
vst->codec->codec_tag = avio_rl32(pb);
vst->codec->codec_id =
ff_codec_get_id(ff_codec_bmp_tags, vst->codec->codec_tag);
if (vst->codec->codec_tag == MKTAG('R', 'J', 'P', 'G'))
vst->codec->codec_id = CODEC_ID_NUV;
} else
avio_skip(pb, 4);
if (ast) {
ast->codec->codec_tag = avio_rl32(pb);
ast->codec->sample_rate = avio_rl32(pb);
ast->codec->bits_per_coded_sample = avio_rl32(pb);
ast->codec->channels = avio_rl32(pb);
ast->codec->codec_id =
ff_wav_codec_get_id(ast->codec->codec_tag,
ast->codec->bits_per_coded_sample);
ast->need_parsing = AVSTREAM_PARSE_FULL;
} else
avio_skip(pb, 4 * 4);
size -= 6 * 4;
avio_skip(pb, size);
return 1;
case NUV_SEEKP:
size = 11;
break;
default:
avio_skip(pb, 7);
size = PKTSIZE(avio_rl32(pb));
break;
}
avio_skip(pb, size);
}
return 0;
}
static int avisynth_read_header(AVFormatContext *s)
{
AVISynthContext *avs = s->priv_data;
HRESULT res;
AVIFILEINFO info;
DWORD id;
AVStream *st;
AVISynthStream *stream;
wchar_t filename_wchar[1024] = { 0 };
char filename_char[1024] = { 0 };
AVIFileInit();
/* avisynth can't accept UTF-8 filename */
MultiByteToWideChar(CP_UTF8, 0, s->filename, -1, filename_wchar, 1024);
WideCharToMultiByte(CP_THREAD_ACP, 0, filename_wchar, -1, filename_char, 1024, NULL, NULL);
res = AVIFileOpen(&avs->file, filename_char, OF_READ|OF_SHARE_DENY_WRITE, NULL);
if (res != S_OK)
{
av_log(s, AV_LOG_ERROR, "AVIFileOpen failed with error %ld", res);
AVIFileExit();
return -1;
}
res = AVIFileInfo(avs->file, &info, sizeof(info));
if (res != S_OK)
{
av_log(s, AV_LOG_ERROR, "AVIFileInfo failed with error %ld", res);
AVIFileExit();
return -1;
}
avs->streams = av_mallocz(info.dwStreams * sizeof(AVISynthStream));
for (id=0; id<info.dwStreams; id++)
{
stream = &avs->streams[id];
stream->read = 0;
if (AVIFileGetStream(avs->file, &stream->handle, 0, id) == S_OK)
{
if (AVIStreamInfo(stream->handle, &stream->info, sizeof(stream->info)) == S_OK)
{
if (stream->info.fccType == streamtypeAUDIO)
{
WAVEFORMATEX wvfmt;
LONG struct_size = sizeof(WAVEFORMATEX);
if (AVIStreamReadFormat(stream->handle, 0, &wvfmt, &struct_size) != S_OK)
continue;
st = avformat_new_stream(s, NULL);
st->id = id;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->block_align = wvfmt.nBlockAlign;
st->codec->channels = wvfmt.nChannels;
st->codec->sample_rate = wvfmt.nSamplesPerSec;
st->codec->bit_rate = wvfmt.nAvgBytesPerSec * 8;
st->codec->bits_per_coded_sample = wvfmt.wBitsPerSample;
stream->chunck_samples = wvfmt.nSamplesPerSec * (uint64_t)info.dwScale / (uint64_t)info.dwRate;
stream->chunck_size = stream->chunck_samples * wvfmt.nChannels * wvfmt.wBitsPerSample / 8;
st->codec->codec_tag = wvfmt.wFormatTag;
st->codec->codec_id = ff_wav_codec_get_id(wvfmt.wFormatTag, st->codec->bits_per_coded_sample);
}
else if (stream->info.fccType == streamtypeVIDEO)
{
BITMAPINFO imgfmt;
LONG struct_size = sizeof(BITMAPINFO);
stream->chunck_size = stream->info.dwSampleSize;
stream->chunck_samples = 1;
if (AVIStreamReadFormat(stream->handle, 0, &imgfmt, &struct_size) != S_OK)
continue;
st = avformat_new_stream(s, NULL);
st->id = id;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->r_frame_rate.num = stream->info.dwRate;
st->r_frame_rate.den = stream->info.dwScale;
st->codec->width = imgfmt.bmiHeader.biWidth;
st->codec->height = imgfmt.bmiHeader.biHeight;
st->codec->bits_per_coded_sample = imgfmt.bmiHeader.biBitCount;
st->codec->bit_rate = (uint64_t)stream->info.dwSampleSize * (uint64_t)stream->info.dwRate * 8 / (uint64_t)stream->info.dwScale;
st->codec->codec_tag = imgfmt.bmiHeader.biCompression;
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, imgfmt.bmiHeader.biCompression);
if (st->codec->codec_id == CODEC_ID_RAWVIDEO && imgfmt.bmiHeader.biCompression== BI_RGB) {
st->codec->extradata = av_malloc(9 + FF_INPUT_BUFFER_PADDING_SIZE);
if (st->codec->extradata) {
st->codec->extradata_size = 9;
memcpy(st->codec->extradata, "BottomUp", 9);
}
}
st->duration = stream->info.dwLength;
}
else
{
AVIStreamRelease(stream->handle);
continue;
}
avs->nb_streams++;
st->codec->stream_codec_tag = stream->info.fccHandler;
avpriv_set_pts_info(st, 64, info.dwScale, info.dwRate);
st->start_time = stream->info.dwStart;
}
}
}
return 0;
}
static int lvf_read_header(AVFormatContext *s)
{
AVStream *st;
int64_t next_offset;
unsigned size, nb_streams, id;
avio_skip(s->pb, 16);
nb_streams = avio_rl32(s->pb);
if (!nb_streams)
return AVERROR_INVALIDDATA;
if (nb_streams > 2) {
avpriv_request_sample(s, "%d streams", nb_streams);
return AVERROR_PATCHWELCOME;
}
avio_skip(s->pb, 1012);
while (!url_feof(s->pb)) {
id = avio_rl32(s->pb);
size = avio_rl32(s->pb);
next_offset = avio_tell(s->pb) + size;
switch (id) {
case MKTAG('0', '0', 'f', 'm'):
st = avformat_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
avio_skip(s->pb, 4);
st->codec->width = avio_rl32(s->pb);
st->codec->height = avio_rl32(s->pb);
avio_skip(s->pb, 4);
st->codec->codec_tag = avio_rl32(s->pb);
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
st->codec->codec_tag);
avpriv_set_pts_info(st, 32, 1, 1000);
break;
case MKTAG('0', '1', 'f', 'm'):
st = avformat_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = avio_rl16(s->pb);
st->codec->channels = avio_rl16(s->pb);
st->codec->sample_rate = avio_rl16(s->pb);
avio_skip(s->pb, 8);
st->codec->bits_per_coded_sample = avio_r8(s->pb);
st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags,
st->codec->codec_tag);
avpriv_set_pts_info(st, 32, 1, 1000);
break;
case 0:
avio_seek(s->pb, 2048 + 8, SEEK_SET);
return 0;
default:
avpriv_request_sample(s, "id %d", id);
return AVERROR_PATCHWELCOME;
}
avio_seek(s->pb, next_offset, SEEK_SET);
}
return AVERROR_EOF;
}
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 <= 0 || codec->channels > INT_MAX / 36) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", 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_XMA2:
codec->block_align = 2048;
ff_alloc_extradata(codec, 34);
if (!codec->extradata)
return AVERROR(ENOMEM);
memset(codec->extradata, 0, 34);
break;
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_LE:
/* 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;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP:
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));
if (codec->codec_id == AV_CODEC_ID_XMA2) {
avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
st->duration = avio_rb32(pb);
}
avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
return 0;
}
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
{
AVIOContext *pb = s->pb;
char abss[24];
int hour, min, sec, i, ret, config;
int dsd_layout[6];
ID3v2ExtraMeta *id3v2_extra_meta;
while (avio_tell(pb) + 12 <= eof) {
uint32_t tag = avio_rl32(pb);
uint64_t size = avio_rb64(pb);
uint64_t orig_pos = avio_tell(pb);
switch(tag) {
case MKTAG('A','B','S','S'):
if (size < 8)
return AVERROR_INVALIDDATA;
hour = avio_rb16(pb);
min = avio_r8(pb);
sec = avio_r8(pb);
snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
break;
case MKTAG('C','H','N','L'):
if (size < 2)
return AVERROR_INVALIDDATA;
st->codec->channels = avio_rb16(pb);
if (size < 2 + st->codec->channels * 4)
return AVERROR_INVALIDDATA;
st->codec->channel_layout = 0;
if (st->codec->channels > FF_ARRAY_ELEMS(dsd_layout)) {
avpriv_request_sample(s, "channel layout");
break;
}
for (i = 0; i < st->codec->channels; i++)
dsd_layout[i] = avio_rl32(pb);
for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
const DSDLayoutDesc * d = &dsd_channel_layout[i];
if (av_get_channel_layout_nb_channels(d->layout) == st->codec->channels &&
!memcmp(d->dsd_layout, dsd_layout, st->codec->channels * sizeof(uint32_t))) {
st->codec->channel_layout = d->layout;
break;
}
}
break;
case MKTAG('C','M','P','R'):
if (size < 4)
return AVERROR_INVALIDDATA;
tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
if (!st->codec->codec_id) {
av_log(s, AV_LOG_ERROR, "'%c%c%c%c' compression is not supported\n",
tag&0xFF, (tag>>8)&0xFF, (tag>>16)&0xFF, (tag>>24)&0xFF);
return AVERROR_PATCHWELCOME;
}
break;
case MKTAG('F','S',' ',' '):
if (size < 4)
return AVERROR_INVALIDDATA;
st->codec->sample_rate = avio_rb32(pb) / 8;
break;
case MKTAG('I','D','3',' '):
id3v2_extra_meta = NULL;
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 (size < avio_tell(pb) - orig_pos) {
av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
return AVERROR_INVALIDDATA;
}
break;
case MKTAG('L','S','C','O'):
if (size < 2)
return AVERROR_INVALIDDATA;
config = avio_rb16(pb);
if (config != 0xFFFF) {
if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
st->codec->channel_layout = dsd_loudspeaker_config[config];
if (!st->codec->channel_layout)
avpriv_request_sample(s, "loudspeaker configuration %d", config);
}
break;
}
avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
}
static int smjpeg_read_header(AVFormatContext *s)
{
SMJPEGContext *sc = s->priv_data;
AVStream *ast = NULL, *vst = NULL;
AVIOContext *pb = s->pb;
uint32_t version, htype, hlength, duration;
char *comment;
avio_skip(pb, 8); // magic
version = avio_rb32(pb);
if (version)
av_log_ask_for_sample(s, "unknown version %d\n", version);
duration = avio_rb32(pb); // in msec
while (!pb->eof_reached) {
htype = avio_rl32(pb);
switch (htype) {
case SMJPEG_TXT:
hlength = avio_rb32(pb);
if (!hlength || hlength > 512)
return AVERROR_INVALIDDATA;
comment = av_malloc(hlength + 1);
if (!comment)
return AVERROR(ENOMEM);
if (avio_read(pb, comment, hlength) != hlength) {
av_freep(&comment);
av_log(s, AV_LOG_ERROR, "error when reading comment\n");
return AVERROR_INVALIDDATA;
}
comment[hlength] = 0;
av_dict_set(&s->metadata, "comment", comment,
AV_DICT_DONT_STRDUP_VAL);
break;
case SMJPEG_SND:
if (ast) {
av_log_ask_for_sample(s, "multiple audio streams not supported\n");
return AVERROR_INVALIDDATA;
}
hlength = avio_rb32(pb);
if (hlength < 8)
return AVERROR_INVALIDDATA;
ast = avformat_new_stream(s, 0);
if (!ast)
return AVERROR(ENOMEM);
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codec->sample_rate = avio_rb16(pb);
ast->codec->bits_per_coded_sample = avio_r8(pb);
ast->codec->channels = avio_r8(pb);
ast->codec->codec_tag = avio_rl32(pb);
ast->codec->codec_id = ff_codec_get_id(ff_codec_smjpeg_audio_tags,
ast->codec->codec_tag);
ast->duration = duration;
sc->audio_stream_index = ast->index;
avpriv_set_pts_info(ast, 32, 1, 1000);
avio_skip(pb, hlength - 8);
break;
case SMJPEG_VID:
if (vst) {
av_log_ask_for_sample(s, "multiple video streams not supported\n");
return AVERROR_INVALIDDATA;
}
hlength = avio_rb32(pb);
if (hlength < 12)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4); // number of frames
vst = avformat_new_stream(s, 0);
if (!vst)
return AVERROR(ENOMEM);
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->width = avio_rb16(pb);
vst->codec->height = avio_rb16(pb);
vst->codec->codec_tag = avio_rl32(pb);
vst->codec->codec_id = ff_codec_get_id(ff_codec_smjpeg_video_tags,
vst->codec->codec_tag);
vst->duration = duration;
sc->video_stream_index = vst->index;
avpriv_set_pts_info(vst, 32, 1, 1000);
avio_skip(pb, hlength - 12);
break;
case SMJPEG_HEND:
return 0;
default:
av_log(s, AV_LOG_ERROR, "unknown header %x\n", htype);
return AVERROR_INVALIDDATA;
}
}
return AVERROR_EOF;
}
/* Returns the number of sound data frames or negative on error */
static unsigned int get_aiff_header(AVIOContext *pb, AVCodecContext *codec,
int size, unsigned version)
{
AVExtFloat ext;
double sample_rate;
unsigned int num_frames;
if (size & 1)
size++;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->channels = avio_rb16(pb);
num_frames = avio_rb32(pb);
codec->bits_per_coded_sample = avio_rb16(pb);
avio_read(pb, (uint8_t*)&ext, sizeof(ext));/* Sample rate is in */
sample_rate = av_ext2dbl(ext); /* 80 bits BE IEEE extended float */
codec->sample_rate = sample_rate;
size -= 18;
/* Got an AIFF-C? */
if (version == AIFF_C_VERSION1) {
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(ff_codec_aiff_tags, codec->codec_tag);
switch (codec->codec_id) {
case CODEC_ID_PCM_S16BE:
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
break;
case CODEC_ID_ADPCM_IMA_QT:
codec->block_align = 34*codec->channels;
codec->frame_size = 64;
break;
case CODEC_ID_MACE3:
codec->block_align = 2*codec->channels;
codec->frame_size = 6;
break;
case CODEC_ID_MACE6:
codec->block_align = 1*codec->channels;
codec->frame_size = 6;
break;
case CODEC_ID_GSM:
codec->block_align = 33;
codec->frame_size = 160;
break;
case CODEC_ID_QCELP:
codec->block_align = 35;
codec->frame_size= 160;
break;
default:
break;
}
size -= 4;
} else {
/* Need the codec type */
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
}
/* Block align needs to be computed in all cases, as the definition
* is specific to applications -> here we use the WAVE format definition */
if (!codec->block_align)
codec->block_align = (codec->bits_per_coded_sample * codec->channels) >> 3;
codec->bit_rate = (codec->frame_size ? codec->sample_rate/codec->frame_size :
codec->sample_rate) * (codec->block_align << 3);
/* Chunk is over */
if (size)
avio_skip(pb, size);
return num_frames;
}
static int rsd_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
int i, 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[5];
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_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_THP:
/* RSD3GADP is mono, so only alloc enough memory
to store the coeff table for a single channel. */
start = avio_rl32(pb);
if (ff_get_extradata(codec, s->pb, 32) < 0)
return AVERROR(ENOMEM);
for (i = 0; i < 16; i++)
AV_WB16(codec->extradata + i * 2, AV_RL16(codec->extradata + i * 2));
if (pb->seekable)
st->duration = (avio_size(pb) - start) / 8 * 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;
}