//this is useful to duplicate on the fly a descriptor (mainly for authoring purposes)
GF_EXPORT
GF_Err gf_odf_desc_copy(GF_Descriptor *inDesc, GF_Descriptor **outDesc)
{
GF_Err e;
char *desc;
u32 size;
//warning: here we get some data allocated
e = gf_odf_desc_write(inDesc, &desc, &size);
if (e) return e;
e = gf_odf_desc_read(desc, size, outDesc);
gf_free(desc);
return e;
}
GF_EXPORT
char *gf_seng_get_base64_iod(GF_SceneEngine *seng)
{
u32 size, size64;
char *buffer, *buf64;
u32 i=0;
GF_StreamContext*sc = NULL;
if (!seng->ctx->root_od) return NULL;
while ((sc = (GF_StreamContext*)gf_list_enum(seng->ctx->streams, &i))) {
if ((sc->streamType == GF_STREAM_SCENE) && (sc->objectType != GPAC_OTI_SCENE_DIMS))
break;
}
if (!sc) return NULL;
size = 0;
gf_odf_desc_write((GF_Descriptor *) seng->ctx->root_od, &buffer, &size);
buf64 = gf_malloc(size*2);
size64 = gf_base64_encode( buffer, size, buf64, size*2);
buf64[size64] = 0;
gf_free(buffer);
return buf64;
}
int sdp_generator(PNC_CallbackData *data, char *ip_dest, char *sdp_fmt)
{
GF_SceneEngine *codec;
GF_ESD *esd = NULL;
u32 size,size64;
char *buffer;
char buf64[5000];
FILE *fp;
int ret;
char temp[5000];
u16 port;
u32 socket_type;
gf_sk_get_local_info(data->chan->rtp, &port, &socket_type);
fp = fopen("broadcaster.sdp", "w+");
if(fp == NULL) {
fprintf(stderr, "Cannot open SDP file broadcaster.sdp\n");
exit(1);
}
ret = fwrite("v=0\n", 1, 4, fp);
sprintf(temp, "o=GpacBroadcaster 3326096807 1117107880000 IN IP%d %s\n", gf_net_is_ipv6(ip_dest) ? 6 : 4, ip_dest);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("s=MPEG4Broadcaster\n", 1, 19, fp);
sprintf(temp, "c=IN IP%d %s\n", gf_net_is_ipv6(ip_dest) ? 6 : 4, ip_dest);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("t=0 0\n", 1, 6, fp);
codec = (GF_SceneEngine *) data->codec;
if (codec) {
buffer = NULL;
size = 0;
gf_odf_desc_write((GF_Descriptor *) codec->ctx->root_od, &buffer, &size);
esd = gf_list_get(codec->ctx->root_od->ESDescriptors, 0);
size64 = gf_base64_encode((unsigned char *) buffer, size, (unsigned char *) buf64, 2000);
buf64[size64] = 0;
free(buffer);
sprintf(temp, "a=mpeg4-iod:\"data:application/mpeg4-iod;base64,%s\"\n", buf64);
ret = fwrite(temp, 1, strlen(temp), fp);
}
sprintf(temp, "m=application %d RTP/AVP 96\n", port);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("a=rtpmap:96 mpeg4-generic/1000\n", 1, 31, fp);
if (esd) {
sprintf(temp, "a=mpeg4-esid:%d\n", esd->ESID);
ret = fwrite(temp, 1, strlen(temp), fp);
}
sprintf(temp, "%s\n", sdp_fmt);
ret = fwrite(temp, 1, strlen(temp), fp);
fflush(fp);
fclose(fp);
dprintf(DEBUG_sdp_generator, "SDP file generated in broadcaster.sdp\n");
return GF_OK;
}
GF_EXPORT
GF_Err gf_hinter_finalize(GF_ISOFile *file, u32 IOD_Profile, u32 bandwidth)
{
u32 i, sceneT, odT, descIndex, size, size64;
GF_InitialObjectDescriptor *iod;
GF_SLConfig slc;
GF_ESD *esd;
GF_ISOSample *samp;
Bool remove_ocr;
char *buffer;
char buf64[5000], sdpLine[2300];
gf_isom_sdp_clean(file);
if (bandwidth) {
sprintf(buf64, "b=AS:%d", bandwidth);
gf_isom_sdp_add_line(file, buf64);
}
//xtended attribute for copyright
sprintf(buf64, "a=x-copyright: %s", "MP4/3GP File hinted with GPAC " GPAC_FULL_VERSION " (C)2000-2005 - http://gpac.sourceforge.net");
gf_isom_sdp_add_line(file, buf64);
if (IOD_Profile == GF_SDP_IOD_NONE) return GF_OK;
odT = sceneT = 0;
for (i=0; i<gf_isom_get_track_count(file); i++) {
if (!gf_isom_is_track_in_root_od(file, i+1)) continue;
switch (gf_isom_get_media_type(file,i+1)) {
case GF_ISOM_MEDIA_OD:
odT = i+1;
break;
case GF_ISOM_MEDIA_SCENE:
sceneT = i+1;
break;
}
}
remove_ocr = 0;
if (IOD_Profile == GF_SDP_IOD_ISMA_STRICT) {
IOD_Profile = GF_SDP_IOD_ISMA;
remove_ocr = 1;
}
/*if we want ISMA like iods, we need at least BIFS */
if ( (IOD_Profile == GF_SDP_IOD_ISMA) && !sceneT ) return GF_BAD_PARAM;
/*do NOT change PLs, we assume they are correct*/
iod = (GF_InitialObjectDescriptor *) gf_isom_get_root_od(file);
if (!iod) return GF_NOT_SUPPORTED;
/*rewrite an IOD with good SL config - embbed data if possible*/
if (IOD_Profile == GF_SDP_IOD_ISMA) {
Bool is_ok = 1;
while (gf_list_count(iod->ESDescriptors)) {
esd = (GF_ESD*)gf_list_get(iod->ESDescriptors, 0);
gf_odf_desc_del((GF_Descriptor *) esd);
gf_list_rem(iod->ESDescriptors, 0);
}
/*get OD esd, and embbed stream data if possible*/
if (odT) {
esd = gf_isom_get_esd(file, odT, 1);
if (gf_isom_get_sample_count(file, odT)==1) {
samp = gf_isom_get_sample(file, odT, 1, &descIndex);
if (gf_hinter_can_embbed_data(samp->data, samp->dataLength, GF_STREAM_OD)) {
InitSL_NULL(&slc);
slc.predefined = 0;
slc.hasRandomAccessUnitsOnlyFlag = 1;
slc.timeScale = slc.timestampResolution = gf_isom_get_media_timescale(file, odT);
slc.OCRResolution = 1000;
slc.startCTS = samp->DTS+samp->CTS_Offset;
slc.startDTS = samp->DTS;
//set the SL for future extraction
gf_isom_set_extraction_slc(file, odT, 1, &slc);
size64 = gf_base64_encode(samp->data, samp->dataLength, buf64, 2000);
buf64[size64] = 0;
sprintf(sdpLine, "data:application/mpeg4-od-au;base64,%s", buf64);
esd->decoderConfig->avgBitrate = 0;
esd->decoderConfig->bufferSizeDB = samp->dataLength;
esd->decoderConfig->maxBitrate = 0;
size64 = strlen(sdpLine)+1;
esd->URLString = (char*)gf_malloc(sizeof(char) * size64);
strcpy(esd->URLString, sdpLine);
} else {
GF_LOG(GF_LOG_WARNING, GF_LOG_RTP, ("[rtp hinter] OD sample too large to be embedded in IOD - ISMA disabled\n"));
is_ok = 0;
}
gf_isom_sample_del(&samp);
}
if (remove_ocr) esd->OCRESID = 0;
else if (esd->OCRESID == esd->ESID) esd->OCRESID = 0;
//OK, add this to our IOD
gf_list_add(iod->ESDescriptors, esd);
}
esd = gf_isom_get_esd(file, sceneT, 1);
if (gf_isom_get_sample_count(file, sceneT)==1) {
samp = gf_isom_get_sample(file, sceneT, 1, &descIndex);
if (gf_hinter_can_embbed_data(samp->data, samp->dataLength, GF_STREAM_SCENE)) {
slc.timeScale = slc.timestampResolution = gf_isom_get_media_timescale(file, sceneT);
slc.OCRResolution = 1000;
slc.startCTS = samp->DTS+samp->CTS_Offset;
slc.startDTS = samp->DTS;
//set the SL for future extraction
gf_isom_set_extraction_slc(file, sceneT, 1, &slc);
//encode in Base64 the sample
size64 = gf_base64_encode(samp->data, samp->dataLength, buf64, 2000);
buf64[size64] = 0;
sprintf(sdpLine, "data:application/mpeg4-bifs-au;base64,%s", buf64);
esd->decoderConfig->avgBitrate = 0;
esd->decoderConfig->bufferSizeDB = samp->dataLength;
esd->decoderConfig->maxBitrate = 0;
esd->URLString = (char*)gf_malloc(sizeof(char) * (strlen(sdpLine)+1));
strcpy(esd->URLString, sdpLine);
} else {
GF_LOG(GF_LOG_ERROR, GF_LOG_RTP, ("[rtp hinter] Scene description sample too large to be embedded in IOD - ISMA disabled\n"));
is_ok = 0;
}
gf_isom_sample_del(&samp);
}
if (remove_ocr) esd->OCRESID = 0;
else if (esd->OCRESID == esd->ESID) esd->OCRESID = 0;
gf_list_add(iod->ESDescriptors, esd);
if (is_ok) {
u32 has_a, has_v, has_i_a, has_i_v;
has_a = has_v = has_i_a = has_i_v = 0;
for (i=0; i<gf_isom_get_track_count(file); i++) {
esd = gf_isom_get_esd(file, i+1, 1);
if (!esd) continue;
if (esd->decoderConfig->streamType==GF_STREAM_VISUAL) {
if (esd->decoderConfig->objectTypeIndication==GPAC_OTI_VIDEO_MPEG4_PART2) has_i_v ++;
else has_v++;
} else if (esd->decoderConfig->streamType==GF_STREAM_AUDIO) {
if (esd->decoderConfig->objectTypeIndication==GPAC_OTI_AUDIO_AAC_MPEG4) has_i_a ++;
else has_a++;
}
gf_odf_desc_del((GF_Descriptor *)esd);
}
/*only 1 MPEG-4 visual max and 1 MPEG-4 audio max for ISMA compliancy*/
if (!has_v && !has_a && (has_i_v<=1) && (has_i_a<=1)) {
sprintf(sdpLine, "a=isma-compliance:1,1.0,1");
gf_isom_sdp_add_line(file, sdpLine);
}
}
}
//encode the IOD
buffer = NULL;
size = 0;
gf_odf_desc_write((GF_Descriptor *) iod, &buffer, &size);
gf_odf_desc_del((GF_Descriptor *)iod);
//encode in Base64 the iod
size64 = gf_base64_encode(buffer, size, buf64, 2000);
buf64[size64] = 0;
gf_free(buffer);
sprintf(sdpLine, "a=mpeg4-iod:\"data:application/mpeg4-iod;base64,%s\"", buf64);
gf_isom_sdp_add_line(file, sdpLine);
return GF_OK;
}
int sdp_generator(PNC_CallbackData * data, char *ip_dest, char *sdp_fmt)
{
GF_BifsEngine *codec;
GF_ESD *esd;
u32 size,size64;
char *buffer;
char buf64[5000];
FILE *fp;
int ret;
char temp[5000];
u16 port;
u32 socket_type;
// fonctions necessaires pour recuperer les informations necessaires a la construction du fichier
gf_sk_get_local_info(data->chan->rtp, &port, &socket_type);
// fprintf(stdout, "%s --------- %d\n", ip_adresse, port);
fp = fopen("broadcaster.sdp", "w+");
if(fp == NULL)
{
fprintf(stdout, "[broadcaster] : erreur, probleme a ouvrir file temp pour scene initiale\n");
exit(1);
}
// ecriture du fichier SDP
ret = fwrite("v=0\n", 1, 4, fp);
sprintf(temp, "o=GpacBroadcaster 3326096807 1117107880000 IN IP%d %s\n", gf_net_is_ipv6(ip_dest) ? 6 : 4, ip_dest);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("s=MPEG4Broadcaster\n", 1, 19, fp);
sprintf(temp, "c=IN IP%d %s\n", gf_net_is_ipv6(ip_dest) ? 6 : 4, ip_dest);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("t=0 0\n", 1, 6, fp);
// GF_BIFSEngine
codec = (GF_BifsEngine *) data->codec;
buffer = NULL;
size = 0;
gf_odf_desc_write((GF_Descriptor *) codec->ctx->root_od, &buffer, &size);
esd = gf_list_get(codec->ctx->root_od->ESDescriptors, 0);
//encode in Base64 the iod
size64 = gf_base64_encode((unsigned char *) buffer, size, (unsigned char *) buf64, 2000);
// size64 = gf_base64_encode(buffer, size, buf64, 2000);
buf64[size64] = 0;
free(buffer);
// fprintf(stdout, "a=mpeg4-iod:\"data:application/mpeg4-iod;base64,%s\"\n", buf64);
sprintf(temp, "a=mpeg4-iod:\"data:application/mpeg4-iod;base64,%s\"\n", buf64);
ret = fwrite(temp, 1, strlen(temp), fp);
sprintf(temp, "m=application %d RTP/AVP 96\n", port);
ret = fwrite(temp, 1, strlen(temp), fp);
ret = fwrite("a=rtpmap:96 mpeg4-generic/1000\n", 1, 31, fp);
sprintf(temp, "a=mpeg4-esid:%d\n", esd->ESID);
ret = fwrite(temp, 1, strlen(temp), fp);
// fprintf(stdout, "%s\n", sdp_fmt);
sprintf(temp, "%s\n", sdp_fmt);
ret = fwrite(temp, 1, strlen(temp), fp);
fclose(fp);
fprintf(stdout, "[sdp generator] : fichier SDP generater in broadcaster.sdp\n");
return GF_OK;
}