/*************************************************************************
*
* Makes a copy of a tag into a PPPoE packe
*
************************************************************************/
void copy_tag(struct pppoe_packet *dest, struct pppoe_tag *pt)
{
struct pppoe_tag *end_tag = get_tag(dest->hdr, PTT_EOL);
int tagid;
int tag_len;
if( !pt ) {
return;
}
tagid = tag_index(pt->tag_type);
tag_len = sizeof(struct pppoe_tag) + ntohs(pt->tag_len);
if( end_tag ){
memcpy(((char*)end_tag)+tag_len ,
end_tag, sizeof(struct pppoe_tag));
dest->tags[tagid]=end_tag;
dest->tags[TAG_EOL] = (struct pppoe_tag*)((char*)dest->tags[TAG_EOL] + tag_len);
memcpy(end_tag, pt, tag_len);
dest->hdr->length = htons(ntohs(dest->hdr->length) + tag_len);
}else{
memcpy(next_tag(dest->hdr),pt, tag_len);
dest->tags[tagid]=next_tag(dest->hdr);
add_tag(dest->hdr,next_tag(dest->hdr));
}
}
/*************************************************************************
*
* Look for a tag of a specific type
*
************************************************************************/
struct pppoe_tag *get_tag(struct pppoe_hdr *ph, u_int16_t idx)
{
char *end = (char *) next_tag(ph);
char *ptn = NULL;
struct pppoe_tag *pt = &ph->tag[0];
/*
* Keep processing tags while a tag header will still fit.
*
* This check will ensure that the entire tag header pointed
* to by pt will fit inside the message, and thus it will be
* valid to check the tag_type and tag_len fields.
*/
while ((char *)(pt + 1) <= end) {
/*
* If the tag data would go past the end of the packet, abort.
*/
ptn = (((char *) (pt + 1)) + ntohs(pt->tag_len));
if (ptn > end)
return NULL;
if (pt->tag_type == idx)
return pt;
pt = (struct pppoe_tag *) ptn;
}
return NULL;
}
static const char *parse_field(struct buffer *self, int tag)
{
if (parse_tag(self) != tag) {
next_tag(self);
return NULL;
}
return parse_value(self);
}
/**************************************************************************
*
* Update header to reflect the addition of a new tag
*
**************************************************************************/
static void add_tag(struct pppoe_hdr *ph, struct pppoe_tag *pt)
{
int len = (ntohs(ph->length) +
ntohs(pt->tag_len) +
sizeof(struct pppoe_tag));
if (pt != next_tag(ph))
printf("PPPoE add_tag caller is buggy\n");
ph->length = htons(len);
}
static const char *parse_field_promisc(struct buffer *self, int *tag)
{
*tag = parse_tag(self);
if (!(*tag)) {
next_tag(self);
return NULL;
}
return parse_value(self);
}
int main(int argc, char *argv[]) {
int valid = FALSE;
int x = 0;
char str1[8];
char str2[8];
next_tag(str1);
gets(str2);
if (strncmp(str1, str2, 8) == 0)
valid = TRUE;
printf("buffer1: str1(%s), str2(%s), valid(%d)\n", str1, str2, valid);
}
/* return the size of the found tag */
static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
{
unsigned int tag;
int64_t size;
for (;;) {
if (pb->eof_reached)
return -1;
size = next_tag(pb, &tag);
if (tag == tag1)
break;
wav_seek_tag(pb, size, SEEK_CUR);
}
return size;
}
/* return the size of the found tag */
static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
{
unsigned int tag;
int64_t size;
for (;;) {
if (url_feof(pb))
return -1;
size = next_tag(pb, &tag);
if (tag == tag1)
break;
avio_skip(pb, size);
}
return size;
}
/* return the size of the found tag */
static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
{
unsigned int tag;
int64_t size;
for (;;) {
if (url_feof(pb))
return AVERROR_EOF;
size = next_tag(pb, &tag);
if (tag == tag1)
break;
wav_seek_tag(pb, size, SEEK_CUR);
}
return size;
}
static int parse_field_promisc(struct buffer *self, int *tag, const char **value)
{
int ret;
ret = parse_tag(self, tag);
if (ret)
goto fail;
return parse_value(self, value);
fail:
next_tag(self);
return ret;
}
bool find_tags(const char *name, struct ptr_array *tags)
{
struct tag *t;
size_t pos = 0;
if (!load_tag_file())
return false;
t = xnew(struct tag, 1);
while (next_tag(tag_file, &pos, name, 1, t)) {
ptr_array_add(tags, t);
t = xnew(struct tag, 1);
}
free(t);
sort_tags(tags);
return true;
}
void collect_tags(const char *prefix)
{
struct tag t;
size_t pos = 0;
char *prev = NULL;
if (!load_tag_file())
return;
while (next_tag(tag_file, &pos, prefix, 0, &t)) {
if (!prev || strcmp(prev, t.name)) {
add_completion(t.name);
prev = t.name;
t.name = NULL;
}
free_tag(&t);
}
}
static void parse_string(sd_stringparser *parser,
void(*frame_cb)(sd_stringparser*, void*, char,int),
void(*tag_cb)(sd_stringparser*, void*, tag_attribute*, int param),
void *data) {
if(parser->string) {
int pos = 0;
while(1) {
const char *start = parser->string + pos;
const char *str = parser->string + pos;
int type = next_tag(&str);
pos += (str-start);
start = parser->string + pos;
if(type == TAG_TAG) {
// a tag
tag_attribute attrib;
if(rn_tag_attribute(static_taglist, &str, &attrib) == 0) {
// read the numeric param and call the callback function
// if a param is not present, 0 is assumed
int pos = 0;
int param = rn_int(&pos, str);
str += pos;
if(tag_cb) tag_cb(parser, data, &attrib, param);
}
} else if(type == TAG_FRAME) {
// a frame
int duration=0;
char frame_letter=0;
rn_frame(&str, &frame_letter, &duration);
if(frame_cb) frame_cb(parser, data, frame_letter, duration);
} else if(type == TAG_MARKER) {
// an end of frame descriptor marker (a dash, '-')
rn_descriptor_marker(&str);
} else {
// the end of stream
break;
}
pos += (str-start);
}
}
}
static int parse_field(struct buffer *self, int tag, const char **value)
{
int ptag, ret;
ret = parse_tag(self, &ptag);
if (ret)
goto fail;
else if (ptag != tag) {
ret = FIX_MSG_STATE_GARBLED;
goto fail;
}
return parse_value(self, value);
fail:
next_tag(self);
return ret;
}
int main(int argc, char *argv[])
{
int cnt;
char tbuf[LINE_LENGTH_MAX + 10]; /* txt data buffer */
uint8_t bbuf[LINE_LENGTH_MAX / 3 + 10]; /* bin data buffer */
char *tag;
char *pt;
if(0 != deal_with_parameter(argc, argv)) {
return -1;
}
fd_o = fopen(file_o, "wb");
if(NULL == fd_o) {
RPTERR("open \"%s\" failed", file_o);
return -1;
}
while(NULL != fgets(tbuf, LINE_LENGTH_MAX, stdin)) {
pt = tbuf;
while(0 == next_tag(&tag, &pt)) {
if(0 == strcmp(tag, "*ts") ||
0 == strcmp(tag, "*rs") ||
0 == strcmp(tag, "*data") ||
0 == strcmp(tag, "*pes") ||
0 == strcmp(tag, "*es")) {
cnt = next_nbyte_hex(bbuf, &pt, LINE_LENGTH_MAX / 3);
(void)fwrite(bbuf, (size_t)cnt, 1, fd_o);
}
}
}
fclose(fd_o);
return 0;
}
/* wav input */
static int wav_read_header(AVFormatContext *s)
{
int64_t size, av_uninit(data_size);
int64_t sample_count = 0;
int rf64;
uint32_t tag;
AVIOContext *pb = s->pb;
AVStream *st = NULL;
WAVDemuxContext *wav = s->priv_data;
int ret, got_fmt = 0;
int64_t next_tag_ofs, data_ofs = -1;
/* check RIFF header */
tag = avio_rl32(pb);
rf64 = tag == MKTAG('R', 'F', '6', '4');
if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
return AVERROR_INVALIDDATA;
avio_rl32(pb); /* file size */
tag = avio_rl32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return AVERROR_INVALIDDATA;
if (rf64) {
if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
return AVERROR_INVALIDDATA;
size = avio_rl32(pb);
if (size < 16)
return AVERROR_INVALIDDATA;
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
if (data_size < 0 || sample_count < 0) {
av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
"ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
data_size, sample_count);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - 16); /* skip rest of ds64 chunk */
}
for (;;) {
size = next_tag(pb, &tag);
next_tag_ofs = avio_tell(pb) + size;
if (pb->eof_reached)
break;
switch (tag) {
case MKTAG('f', 'm', 't', ' '):
/* only parse the first 'fmt ' tag found */
if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st) < 0)) {
return ret;
} else if (got_fmt)
av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
got_fmt = 1;
break;
case MKTAG('d', 'a', 't', 'a'):
if (!got_fmt) {
av_log(s, AV_LOG_ERROR,
"found no 'fmt ' tag before the 'data' tag\n");
return AVERROR_INVALIDDATA;
}
if (rf64) {
next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
} else {
data_size = size;
next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
}
data_ofs = avio_tell(pb);
/* don't look for footer metadata if we can't seek or if we don't
* know where the data tag ends
*/
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!rf64 && !size))
goto break_loop;
break;
case MKTAG('f', 'a', 'c', 't'):
if (!sample_count)
sample_count = avio_rl32(pb);
break;
case MKTAG('b', 'e', 'x', 't'):
if ((ret = wav_parse_bext_tag(s, size)) < 0)
return ret;
break;
case MKTAG('L', 'I', 'S', 'T'):
if (size < 4) {
av_log(s, AV_LOG_ERROR, "too short LIST");
return AVERROR_INVALIDDATA;
}
switch (avio_rl32(pb)) {
case MKTAG('I', 'N', 'F', 'O'):
if ((ret = ff_read_riff_info(s, size - 4)) < 0)
return ret;
}
break;
}
/* seek to next tag unless we know that we'll run into EOF */
if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
wav_seek_tag(pb, next_tag_ofs, SEEK_SET) < 0) {
break;
}
}
break_loop:
if (data_ofs < 0) {
av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, data_ofs, SEEK_SET);
if (!sample_count && st->codecpar->channels &&
av_get_bits_per_sample(st->codecpar->codec_id))
sample_count = (data_size << 3) /
(st->codecpar->channels *
(uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
if (sample_count)
st->duration = sample_count;
ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
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;
}
/*************************************************************************
*
* Construct and send a discovery message.
*
************************************************************************/
int send_disc(struct session *ses, struct pppoe_packet *p)
{
char buf[MAX_PAYLOAD + sizeof(struct pppoe_hdr)];
int data_len = sizeof(struct pppoe_hdr);
struct pppoe_hdr *ph = NULL;
struct pppoe_tag *tag = NULL;
int i, err = 0;
int got_host_uniq = 0;
int got_srv_name = 0;
int got_ac_name = 0;
for (i = 0; i < MAX_TAGS; i++) {
if (!p->tags[i])
continue;
got_host_uniq |= (p->tags[i]->tag_type == PTT_HOST_UNIQ);
/* Relay identifiers qualify as HOST_UNIQ's:
we need HOST_UNIQ to uniquely identify the packet,
PTT_RELAY_SID is sufficient for us for outgoing packets */
got_host_uniq |= (p->tags[i]->tag_type == PTT_RELAY_SID);
got_srv_name |= (p->tags[i]->tag_type == PTT_SRV_NAME);
got_ac_name |= (p->tags[i]->tag_type == PTT_AC_NAME);
data_len += (ntohs(p->tags[i]->tag_len) +
sizeof(struct pppoe_tag));
}
ph = (struct pppoe_hdr *) buf;
memcpy(ph, p->hdr, sizeof(struct pppoe_hdr));
ph->length = __constant_htons(0);
/* if no HOST_UNIQ tags --- add one with process id */
if (!got_host_uniq){
data_len += (sizeof(struct pppoe_tag) +
sizeof(struct session *));
tag = next_tag(ph);
tag->tag_type = PTT_HOST_UNIQ;
tag->tag_len = htons(sizeof(struct session *));
memcpy(tag->tag_data,
&ses,
sizeof(struct session *));
add_tag(ph, tag);
}
if( !got_srv_name ){
data_len += sizeof(struct pppoe_tag);
tag = next_tag(ph);
tag->tag_type = PTT_SRV_NAME;
tag->tag_len = 0;
add_tag(ph, tag);
}
if(!got_ac_name && ph->code==PADO_CODE){
data_len += sizeof(struct pppoe_tag);
tag = next_tag(ph);
tag->tag_type = PTT_AC_NAME;
tag->tag_len = 0;
add_tag(ph, tag);
}
for (i = 0; i < MAX_TAGS; i++) {
if (!p->tags[i])
continue;
tag = next_tag(ph);
memcpy(tag, p->tags[i],
sizeof(struct pppoe_tag) + ntohs(p->tags[i]->tag_len));
add_tag(ph, tag);
}
/* Now fixup the packet struct to make sure all of its pointers
are self-contained */
memcpy( p->hdr , ph, data_len );
extract_tags( p->hdr, p->tags);
err = sendto(disc_sock, buf, data_len, 0,
(struct sockaddr*) &p->addr,
sizeof(struct sockaddr_ll));
if(err < 0)
poe_error(ses,"sendto returned: %m\n");
return err;
}
/* 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;
int ret, got_fmt = 0;
int64_t next_tag_ofs, data_ofs = -1;
int min_samples_est0=0;
int min_samples_est1=0;
unsigned char bit_per_sample = 0;
/* 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 < 24)
return -1;
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
if (data_size < 0 || sample_count < 0) {
av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
"ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
data_size, sample_count);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
}
for (;;) {
size = next_tag(pb, &tag);
next_tag_ofs = avio_tell(pb) + size;
if (url_feof(pb))
break;
switch (tag) {
case MKTAG('f', 'm', 't', ' '):
/* only parse the first 'fmt ' tag found */
if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st) < 0)) {
return ret;
} else if (got_fmt)
av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
got_fmt = 1;
break;
case MKTAG('d', 'a', 't', 'a'):
if (!got_fmt) {
av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'data' tag\n");
return AVERROR_INVALIDDATA;
}
if (rf64) {
next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
} else {
data_size = size;
next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
}
data_ofs = avio_tell(pb);
/* don't look for footer metadata if we can't seek or if we don't
* know where the data tag ends
*/
if (!pb->seekable || (!rf64 && !size))
goto break_loop;
break;
case MKTAG('f','a','c','t'):
if(!sample_count)
sample_count = avio_rl32(pb);
break;
case MKTAG('b','e','x','t'):
if ((ret = wav_parse_bext_tag(s, size)) < 0)
return ret;
break;
}
/* seek to next tag unless we know that we'll run into EOF */
if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) {
break;
}
}
break_loop:
if (data_ofs < 0) {
av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, data_ofs, SEEK_SET);
bit_per_sample = av_get_bits_per_sample(st->codec->codec_id);
if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id))
sample_count = (data_size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
if(bit_per_sample&&st->codec->channels&&st->codec->bit_rate){//PCM audio
min_samples_est0 = (size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
min_samples_est1 = (size<<3) / st->codec->bit_rate * st->codec->sample_rate;
if (sample_count){
if(sample_count <= min_samples_est0)//:indecate that sample_count is unvalid
st->duration = min_samples_est1;
else
st->duration = (min_samples_est1 > sample_count? min_samples_est1:sample_count);
}
}
ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
return 0;
}
/* wav input */
static int wav_read_header(AVFormatContext *s)
{
int64_t size, av_uninit(data_size);
int64_t sample_count = 0;
int rf64;
uint32_t tag;
AVIOContext *pb = s->pb;
AVStream *st = NULL;
WAVDemuxContext *wav = s->priv_data;
int ret, got_fmt = 0;
int64_t next_tag_ofs, data_ofs = -1;
wav->smv_data_ofs = -1;
/* check RIFF header */
tag = avio_rl32(pb);
rf64 = tag == MKTAG('R', 'F', '6', '4');
if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
return AVERROR_INVALIDDATA;
avio_rl32(pb); /* file size */
tag = avio_rl32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return AVERROR_INVALIDDATA;
if (rf64) {
if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
return AVERROR_INVALIDDATA;
size = avio_rl32(pb);
if (size < 24)
return AVERROR_INVALIDDATA;
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
if (data_size < 0 || sample_count < 0) {
av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
"ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
data_size, sample_count);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
}
for (;;) {
AVStream *vst;
size = next_tag(pb, &tag);
next_tag_ofs = avio_tell(pb) + size;
if (url_feof(pb))
break;
switch (tag) {
case MKTAG('f', 'm', 't', ' '):
/* only parse the first 'fmt ' tag found */
if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
return ret;
} else if (got_fmt)
av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
got_fmt = 1;
break;
case MKTAG('d', 'a', 't', 'a'):
if (!got_fmt) {
av_log(s, AV_LOG_ERROR,
"found no 'fmt ' tag before the 'data' tag\n");
return AVERROR_INVALIDDATA;
}
if (rf64) {
next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
} else {
data_size = size;
next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
}
data_ofs = avio_tell(pb);
/* don't look for footer metadata if we can't seek or if we don't
* know where the data tag ends
*/
if (!pb->seekable || (!rf64 && !size))
goto break_loop;
break;
case MKTAG('f', 'a', 'c', 't'):
if (!sample_count)
sample_count = avio_rl32(pb);
break;
case MKTAG('b', 'e', 'x', 't'):
if ((ret = wav_parse_bext_tag(s, size)) < 0)
return ret;
break;
case MKTAG('S','M','V','0'):
if (!got_fmt) {
av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
return AVERROR_INVALIDDATA;
}
// SMV file, a wav file with video appended.
if (size != MKTAG('0','2','0','0')) {
av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
goto break_loop;
}
av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
wav->smv_given_first = 0;
vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
avio_r8(pb);
vst->id = 1;
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->codec_id = AV_CODEC_ID_SMVJPEG;
vst->codec->width = avio_rl24(pb);
vst->codec->height = avio_rl24(pb);
vst->codec->extradata_size = 4;
vst->codec->extradata = av_malloc(vst->codec->extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!vst->codec->extradata) {
av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
return AVERROR(ENOMEM);
}
size = avio_rl24(pb);
wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
avio_rl24(pb);
wav->smv_block_size = avio_rl24(pb);
avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
vst->duration = avio_rl24(pb);
avio_rl24(pb);
avio_rl24(pb);
wav->smv_frames_per_jpeg = avio_rl24(pb);
AV_WL32(vst->codec->extradata, wav->smv_frames_per_jpeg);
wav->smv_cur_pt = 0;
goto break_loop;
case MKTAG('L', 'I', 'S', 'T'):
if (size < 4) {
av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
return AVERROR_INVALIDDATA;
}
switch (avio_rl32(pb)) {
case MKTAG('I', 'N', 'F', 'O'):
ff_read_riff_info(s, size - 4);
}
break;
}
/* seek to next tag unless we know that we'll run into EOF */
if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
wav_seek_tag(pb, next_tag_ofs, SEEK_SET) < 0) {
break;
}
}
break_loop:
if (data_ofs < 0) {
av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, data_ofs, SEEK_SET);
if (!sample_count && st->codec->channels &&
av_get_bits_per_sample(st->codec->codec_id) && wav->data_end <= avio_size(pb))
sample_count = (data_size << 3) /
(st->codec->channels *
(uint64_t)av_get_bits_per_sample(st->codec->codec_id));
if (sample_count)
st->duration = sample_count;
ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
return 0;
}
