static int
handle_metadata0(rtmp_t *r, AMFObject *obj,
media_pipe_t *mp, char *errstr, size_t errlen)
{
AVal metastring;
AMFObjectProperty prop;
prop_t *m = mp->mp_prop_metadata;
AMFProp_GetString(AMF_GetProp(obj, NULL, 0), &metastring);
if(!AVMATCH(&metastring, &av_onMetaData)) {
snprintf(errstr, errlen, "No metadata in metadata packet");
return -1;
}
if(RTMP_FindFirstMatchingProperty(obj, &av_duration, &prop) &&
prop.p_type == AMF_NUMBER && prop.p_vu.p_number > 0) {
prop_set_float(prop_create(m, "duration"), prop.p_vu.p_number);
r->total_duration = prop.p_vu.p_number * 1000;
mp_set_duration(mp, r->total_duration * 1000LL);
mp_set_clr_flags(mp, MP_CAN_SEEK, 0);
if(r->ss == NULL && !(r->va->flags & BACKEND_VIDEO_NO_SUBTITLE_SCAN))
r->ss = sub_scanner_create(r->url, mp->mp_prop_subtitle_tracks, r->va, 0);
} else {
r->total_duration = 0;
mp_set_duration(mp, AV_NOPTS_VALUE);
mp_set_clr_flags(mp, 0, MP_CAN_SEEK);
}
if((RTMP_FindFirstMatchingProperty(obj, &av_videoframerate, &prop) &&
RTMP_FindFirstMatchingProperty(obj, &av_framerate, &prop))
&& prop.p_type == AMF_NUMBER) {
r->vframeduration = 1000000.0 / prop.p_vu.p_number;
mp->mp_framerate.num = 1000000;
mp->mp_framerate.den = prop.p_vu.p_number;
}
r->width = r->height = 0;
if(RTMP_FindFirstMatchingProperty(obj, &av_width, &prop) &&
prop.p_type == AMF_NUMBER)
r->width = prop.p_vu.p_number;
if(RTMP_FindFirstMatchingProperty(obj, &av_height, &prop) &&
prop.p_type == AMF_NUMBER)
r->height = prop.p_vu.p_number;
if(r->width && r->height)
TRACE(TRACE_DEBUG, "RTMP", "Video size %d x %d", r->width, r->height);
return 0;
}
static int
handle_metadata0(rtmp_t *r, AMFObject *obj,
media_pipe_t *mp, char *errstr, size_t errlen)
{
AVal metastring;
AMFObjectProperty prop;
prop_t *m = mp->mp_prop_metadata;
AMFProp_GetString(AMF_GetProp(obj, NULL, 0), &metastring);
if(!AVMATCH(&metastring, &av_onMetaData)) {
snprintf(errstr, errlen, "No metadata in metadata packet");
return -1;
}
if(!RTMP_FindFirstMatchingProperty(obj, &av_duration, &prop) ||
prop.p_type != AMF_NUMBER) {
snprintf(errstr, errlen, "Unable to parse total duration");
return -1;
}
prop_set_float(prop_create(m, "duration"), prop.p_vu.p_number);
r->duration = prop.p_vu.p_number;
if(!RTMP_FindFirstMatchingProperty(obj, &av_videoframerate, &prop) ||
prop.p_type != AMF_NUMBER) {
if(!RTMP_FindFirstMatchingProperty(obj, &av_framerate, &prop) ||
prop.p_type != AMF_NUMBER) {
snprintf(errstr, errlen, "Unable to parse video framerate");
return -1;
}
}
r->vframeduration = 1000000.0 / prop.p_vu.p_number;
r->width = r->height = 0;
if(RTMP_FindFirstMatchingProperty(obj, &av_width, &prop) &&
prop.p_type == AMF_NUMBER)
r->width = prop.p_vu.p_number;
if(RTMP_FindFirstMatchingProperty(obj, &av_height, &prop) &&
prop.p_type == AMF_NUMBER)
r->height = prop.p_vu.p_number;
if(r->width && r->height)
TRACE(TRACE_DEBUG, "RTMP", "Video size %d x %d", r->width, r->height);
return 0;
}
int
OpenResumeFile(const char *flvFile, // file name [in]
FILE ** file, // opened file [out]
off_t * size, // size of the file [out]
char **metaHeader, // meta data read from the file [out]
uint32_t * nMetaHeaderSize, // length of metaHeader [out]
double *duration) // duration of the stream in ms [out]
{
size_t bufferSize = 0;
char hbuf[16], *buffer = NULL;
*nMetaHeaderSize = 0;
*size = 0;
*file = fopen(flvFile, "r+b");
if (!*file)
return RD_SUCCESS; // RD_SUCCESS, because we go to fresh file mode instead of quiting
fseek(*file, 0, SEEK_END);
*size = ftello(*file);
fseek(*file, 0, SEEK_SET);
if (*size > 0)
{
// verify FLV format and read header
uint32_t prevTagSize = 0;
// check we've got a valid FLV file to continue!
if (fread(hbuf, 1, 13, *file) != 13)
{
RTMP_Log(RTMP_LOGERROR, "Couldn't read FLV file header!");
return RD_FAILED;
}
if (hbuf[0] != 'F' || hbuf[1] != 'L' || hbuf[2] != 'V'
|| hbuf[3] != 0x01)
{
RTMP_Log(RTMP_LOGERROR, "Invalid FLV file!");
return RD_FAILED;
}
if ((hbuf[4] & 0x05) == 0)
{
RTMP_Log(RTMP_LOGERROR,
"FLV file contains neither video nor audio, aborting!");
return RD_FAILED;
}
uint32_t dataOffset = AMF_DecodeInt32(hbuf + 5);
fseek(*file, dataOffset, SEEK_SET);
if (fread(hbuf, 1, 4, *file) != 4)
{
RTMP_Log(RTMP_LOGERROR, "Invalid FLV file: missing first prevTagSize!");
return RD_FAILED;
}
prevTagSize = AMF_DecodeInt32(hbuf);
if (prevTagSize != 0)
{
RTMP_Log(RTMP_LOGWARNING,
"First prevTagSize is not zero: prevTagSize = 0x%08X",
prevTagSize);
}
// go through the file to find the meta data!
off_t pos = dataOffset + 4;
int bFoundMetaHeader = FALSE;
while (pos < *size - 4 && !bFoundMetaHeader)
{
fseeko(*file, pos, SEEK_SET);
if (fread(hbuf, 1, 4, *file) != 4)
break;
uint32_t dataSize = AMF_DecodeInt24(hbuf + 1);
if (hbuf[0] == 0x12)
{
if (dataSize > bufferSize)
{
/* round up to next page boundary */
bufferSize = dataSize + 4095;
bufferSize ^= (bufferSize & 4095);
free(buffer);
buffer = (char *)malloc(bufferSize);
if (!buffer)
return RD_FAILED;
}
fseeko(*file, pos + 11, SEEK_SET);
if (fread(buffer, 1, dataSize, *file) != dataSize)
break;
AMFObject metaObj;
int nRes = AMF_Decode(&metaObj, buffer, dataSize, FALSE);
if (nRes < 0)
{
RTMP_Log(RTMP_LOGERROR, "%s, error decoding meta data packet",
__FUNCTION__);
break;
}
AVal metastring;
AMFProp_GetString(AMF_GetProp(&metaObj, NULL, 0), &metastring);
if (AVMATCH(&metastring, &av_onMetaData))
{
AMF_Dump(&metaObj);
*nMetaHeaderSize = dataSize;
if (*metaHeader)
free(*metaHeader);
*metaHeader = (char *) malloc(*nMetaHeaderSize);
memcpy(*metaHeader, buffer, *nMetaHeaderSize);
// get duration
AMFObjectProperty prop;
if (RTMP_FindFirstMatchingProperty
(&metaObj, &av_duration, &prop))
{
*duration = AMFProp_GetNumber(&prop);
RTMP_Log(RTMP_LOGDEBUG, "File has duration: %f", *duration);
}
bFoundMetaHeader = TRUE;
break;
}
//metaObj.Reset();
//delete obj;
}
pos += (dataSize + 11 + 4);
}
free(buffer);
if (!bFoundMetaHeader)
RTMP_Log(RTMP_LOGWARNING, "Couldn't locate meta data!");
}
return RD_SUCCESS;
}
