/* wav input */
static int wav_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int64_t size, av_uninit(data_size);
int rf64;
unsigned int tag;
ByteIOContext *pb = s->pb;
AVStream *st;
WAVContext *wav = s->priv_data;
/* check RIFF header */
tag = get_le32(pb);
rf64 = tag == MKTAG('R', 'F', '6', '4');
if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
return -1;
get_le32(pb); /* file size */
tag = get_le32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return -1;
if (rf64) {
if (get_le32(pb) != MKTAG('d', 's', '6', '4'))
return -1;
size = get_le32(pb);
if (size < 16)
return -1;
get_le64(pb); /* RIFF size */
data_size = get_le64(pb);
url_fskip(pb, size - 16); /* skip rest of ds64 chunk */
}
/* parse fmt header */
size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
if (size < 0)
return -1;
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
ff_get_wav_header(pb, st->codec, size);
st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
if (rf64)
size = data_size;
if (size < 0)
return -1;
if (!size) {
wav->data_end = INT64_MAX;
} else
wav->data_end= url_ftell(pb) + size;
return 0;
}
static int w64_read_header(AVFormatContext *s)
{
int64_t size;
AVIOContext *pb = s->pb;
WAVDemuxContext *wav = s->priv_data;
AVStream *st;
uint8_t guid[16];
int ret;
avio_read(pb, guid, 16);
if (memcmp(guid, guid_riff, 16))
return AVERROR_INVALIDDATA;
/* riff + wave + fmt + sizes */
if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
return AVERROR_INVALIDDATA;
avio_read(pb, guid, 16);
if (memcmp(guid, guid_wave, 16)) {
av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
return AVERROR_INVALIDDATA;
}
size = find_guid(pb, guid_fmt);
if (size < 0) {
av_log(s, AV_LOG_ERROR, "could not find fmt guid\n");
return AVERROR_INVALIDDATA;
}
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
/* subtract chunk header size - normal wav file doesn't count it */
ret = ff_get_wav_header(s, pb, st->codecpar, size - 24);
if (ret < 0)
return ret;
avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
st->need_parsing = AVSTREAM_PARSE_FULL;
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
size = find_guid(pb, guid_data);
if (size < 0) {
av_log(s, AV_LOG_ERROR, "could not find data guid\n");
return AVERROR_INVALIDDATA;
}
wav->data_end = avio_tell(pb) + size - 24;
wav->w64 = 1;
return 0;
}
static int w64_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
int64_t size;
ByteIOContext *pb = s->pb;
WAVContext *wav = s->priv_data;
AVStream *st;
uint8_t guid[16];
get_buffer(pb, guid, 16);
if (memcmp(guid, guid_riff, 16))
return -1;
if (get_le64(pb) < 16 + 8 + 16 + 8 + 16 + 8) /* riff + wave + fmt + sizes */
return -1;
get_buffer(pb, guid, 16);
if (memcmp(guid, guid_wave, 16)) {
av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
return -1;
}
size = find_guid(pb, guid_fmt);
if (size < 0) {
av_log(s, AV_LOG_ERROR, "could not find fmt guid\n");
return -1;
}
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
/* subtract chunk header size - normal wav file doesn't count it */
ff_get_wav_header(pb, st->codec, size - 24);
url_fskip(pb, FFALIGN(size, INT64_C(8)) - size);
st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
size = find_guid(pb, guid_data);
if (size < 0) {
av_log(s, AV_LOG_ERROR, "could not find data guid\n");
return -1;
}
wav->data_end = url_ftell(pb) + size - 24;
wav->w64 = 1;
return 0;
}
static int read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
ACTContext* ctx = s->priv_data;
AVIOContext *pb = s->pb;
int size;
AVStream* st;
int min,sec,msec;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(pb, 16);
size=avio_rl32(pb);
ff_get_wav_header(pb, st->codec, size);
/*
8000Hz (Fine-rec) file format has 10 bytes long
packets with 10ms of sound data in them
*/
if (st->codec->sample_rate != 8000) {
av_log(s, AV_LOG_ERROR, "Sample rate %d is not supported.\n", st->codec->sample_rate);
return AVERROR_INVALIDDATA;
}
st->codec->frame_size=80;
st->codec->channels=1;
av_set_pts_info(st, 64, 1, 100);
st->codec->codec_id=CODEC_ID_G729;
avio_seek(pb, 257, SEEK_SET);
msec=avio_rl16(pb);
sec=avio_r8(pb);
min=avio_rl32(pb);
st->duration = av_rescale(1000*(min*60+sec)+msec, st->codec->sample_rate, 1000 * st->codec->frame_size);
ctx->bytes_left_in_chunk=CHUNK_SIZE;
avio_seek(pb, 512, SEEK_SET);
return 0;
}
static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
{
AVIOContext *pb = s->pb;
int ret;
/* parse fmt header */
*st = av_new_stream(s, 0);
if (!*st)
return AVERROR(ENOMEM);
ret = ff_get_wav_header(pb, (*st)->codec, size);
if (ret < 0)
return ret;
(*st)->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate);
return 0;
}
/* wav input */
static int wav_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int64_t size;
unsigned int tag;
ByteIOContext *pb = s->pb;
AVStream *st;
WAVContext *wav = s->priv_data;
/* check RIFF header */
tag = get_le32(pb);
if (tag != MKTAG('R', 'I', 'F', 'F'))
return -1;
get_le32(pb); /* file size */
tag = get_le32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return -1;
/* parse fmt header */
size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
if (size < 0)
return -1;
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
ff_get_wav_header(pb, st->codec, size);
st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
if (size < 0)
return -1;
wav->data_end= url_ftell(pb) + size;
return 0;
}
static int dxa_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVIOContext *pb = s->pb;
DXAContext *c = s->priv_data;
AVStream *st, *ast;
uint32_t tag;
int32_t fps;
int w, h;
int num, den;
int flags;
tag = avio_rl32(pb);
if (tag != MKTAG('D', 'E', 'X', 'A'))
return -1;
flags = avio_r8(pb);
c->frames = avio_rb16(pb);
if(!c->frames){
av_log(s, AV_LOG_ERROR, "File contains no frames ???\n");
return -1;
}
fps = avio_rb32(pb);
if(fps > 0){
den = 1000;
num = fps;
}else if (fps < 0){
den = 100000;
num = -fps;
}else{
den = 10;
num = 1;
}
w = avio_rb16(pb);
h = avio_rb16(pb);
c->has_sound = 0;
st = av_new_stream(s, 0);
if (!st)
return -1;
// Parse WAV data header
if(avio_rl32(pb) == MKTAG('W', 'A', 'V', 'E')){
uint32_t size, fsize;
c->has_sound = 1;
size = avio_rb32(pb);
c->vidpos = avio_tell(pb) + size;
avio_seek(pb, 16, SEEK_CUR);
fsize = avio_rl32(pb);
ast = av_new_stream(s, 0);
if (!ast)
return -1;
ff_get_wav_header(pb, ast->codec, fsize);
// find 'data' chunk
while(avio_tell(pb) < c->vidpos && !url_feof(pb)){
tag = avio_rl32(pb);
fsize = avio_rl32(pb);
if(tag == MKTAG('d', 'a', 't', 'a')) break;
avio_seek(pb, fsize, SEEK_CUR);
}
c->bpc = (fsize + c->frames - 1) / c->frames;
if(ast->codec->block_align)
c->bpc = ((c->bpc + ast->codec->block_align - 1) / ast->codec->block_align) * ast->codec->block_align;
c->bytes_left = fsize;
c->wavpos = avio_tell(pb);
avio_seek(pb, c->vidpos, SEEK_SET);
}
/* now we are ready: build format streams */
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_DXA;
st->codec->width = w;
st->codec->height = h;
av_reduce(&den, &num, den, num, (1UL<<31)-1);
av_set_pts_info(st, 33, num, den);
/* flags & 0x80 means that image is interlaced,
* flags & 0x40 means that image has double height
* either way set true height
*/
if(flags & 0xC0){
st->codec->height >>= 1;
}
static int xwma_read_header(AVFormatContext *s)
{
int64_t size;
int ret;
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(pb, st->codec, size);
if (ret < 0)
return ret;
st->need_parsing = AVSTREAM_PARSE_NONE;
/* All xWMA files I have seen contained WMAv2 data. If there are files
* using WMA Pro or some other codec, then we need to figure out the right
* extradata for that. Thus, ask the user for feedback, but try to go on
* anyway.
*/
if (st->codec->codec_id != AV_CODEC_ID_WMAV2) {
avpriv_request_sample(s, "Unexpected codec (tag 0x04%x; id %d)",
st->codec->codec_tag, st->codec->codec_id);
} else {
/* In all xWMA files I have seen, there is no extradata. But the WMA
* codecs require extradata, 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->codec->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->codec->extradata_size);
} else {
st->codec->extradata_size = 6;
st->codec->extradata = av_mallocz(6 + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
/* setup extradata with our experimentally obtained value */
st->codec->extradata[4] = 31;
}
}
if (!st->codec->channels) {
av_log(s, AV_LOG_WARNING, "Invalid channel count: %d\n",
st->codec->channels);
return AVERROR_INVALIDDATA;
}
if (!st->codec->bits_per_coded_sample) {
av_log(s, AV_LOG_WARNING, "Invalid bits_per_coded_sample: %d\n",
st->codec->bits_per_coded_sample);
return AVERROR_INVALIDDATA;
}
/* set the sample rate */
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
/* parse the remaining RIFF chunks */
for (;;) {
if (pb->eof_reached) {
ret = AVERROR_EOF;
goto end;
}
/* 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->codec->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 end;
}
/* 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(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 end;
}
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->codec->channels * st->codec->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->codec->bits_per_coded_sample, st->codec->channels);
ret = AVERROR_INVALIDDATA;
goto end;
}
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->codec->block_align, /* pos */
dpds_table[i] / bytes_per_sample, /* timestamp */
st->codec->block_align, /* size */
0, /* duration */
AVINDEX_KEYFRAME);
}
} else if (st->codec->bit_rate) {
static int w64_read_header(AVFormatContext *s)
{
int64_t size, data_ofs = 0;
AVIOContext *pb = s->pb;
WAVDemuxContext *wav = s->priv_data;
AVStream *st;
uint8_t guid[16];
int ret;
avio_read(pb, guid, 16);
if (memcmp(guid, ff_w64_guid_riff, 16))
return AVERROR_INVALIDDATA;
/* riff + wave + fmt + sizes */
if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
return AVERROR_INVALIDDATA;
avio_read(pb, guid, 16);
if (memcmp(guid, ff_w64_guid_wave, 16)) {
av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
return AVERROR_INVALIDDATA;
}
wav->w64 = 1;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
while (!url_feof(pb)) {
if (avio_read(pb, guid, 16) != 16)
break;
size = avio_rl64(pb);
if (size <= 24 || INT64_MAX - size < avio_tell(pb))
return AVERROR_INVALIDDATA;
if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
/* subtract chunk header size - normal wav file doesn't count it */
ret = ff_get_wav_header(pb, st->codec, size - 24);
if (ret < 0)
return ret;
avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
} else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
int64_t samples;
samples = avio_rl64(pb);
if (samples > 0)
st->duration = samples;
} else if (!memcmp(guid, ff_w64_guid_data, 16)) {
wav->data_end = avio_tell(pb) + size - 24;
data_ofs = avio_tell(pb);
if (!pb->seekable)
break;
avio_skip(pb, size - 24);
} else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
int64_t start, end, cur;
uint32_t count, chunk_size, i;
start = avio_tell(pb);
end = start + size;
count = avio_rl32(pb);
for (i = 0; i < count; i++) {
char chunk_key[5], *value;
if (url_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
break;
chunk_key[4] = 0;
avio_read(pb, chunk_key, 4);
chunk_size = avio_rl32(pb);
value = av_mallocz(chunk_size + 1);
if (!value)
return AVERROR(ENOMEM);
ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
avio_skip(pb, chunk_size - ret);
av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
}
avio_skip(pb, end - avio_tell(pb));
} else {
av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
avio_skip(pb, size - 24);
}
}
if (!data_ofs)
return AVERROR_EOF;
ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
handle_stream_probing(st);
st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
avio_seek(pb, data_ofs, SEEK_SET);
return 0;
}
/* wav input */
static int wav_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int64_t size, av_uninit(data_size);
int64_t sample_count=0;
int rf64;
unsigned int tag;
AVIOContext *pb = s->pb;
AVStream *st;
WAVContext *wav = s->priv_data;
/* check RIFF header */
tag = avio_rl32(pb);
rf64 = tag == MKTAG('R', 'F', '6', '4');
if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
return -1;
avio_rl32(pb); /* file size */
tag = avio_rl32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return -1;
if (rf64) {
if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
return -1;
size = avio_rl32(pb);
if (size < 16)
return -1;
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
avio_seek(pb, size - 16, SEEK_CUR); /* skip rest of ds64 chunk */
}
/* parse fmt header */
size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
if (size < 0)
return -1;
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
ff_get_wav_header(pb, st->codec, size);
st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
for (;;) {
if (url_feof(pb))
return -1;
size = next_tag(pb, &tag);
if (tag == MKTAG('d', 'a', 't', 'a')){
break;
}else if (tag == MKTAG('f','a','c','t') && !sample_count){
sample_count = avio_rl32(pb);
size -= 4;
}
avio_seek(pb, size, SEEK_CUR);
}
if (rf64)
size = data_size;
if (size < 0)
return -1;
if (!size) {
wav->data_end = INT64_MAX;
} else
wav->data_end= avio_tell(pb) + size;
if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id))
sample_count = (size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
if (sample_count)
st->duration = sample_count;
return 0;
}