static Bool MP3_ConfigureFromFile(MP3Reader *read)
{
u32 hdr, size, pos;
if (!read->stream) return 0;
hdr = gf_mp3_get_next_header(read->stream);
if (!hdr) return 0;
read->sample_rate = gf_mp3_sampling_rate(hdr);
read->oti = gf_mp3_object_type_indication(hdr);
fseek(read->stream, 0, SEEK_SET);
if (!read->oti) return 0;
/*we don't have the full file...*/
if (read->is_remote) return 1;
return 1;
read->duration = gf_mp3_window_size(hdr);
size = gf_mp3_frame_size(hdr);
pos = ftell(read->stream);
fseek(read->stream, pos + size - 4, SEEK_SET);
while (1) {
hdr = gf_mp3_get_next_header(read->stream);
if (!hdr) break;
read->duration += gf_mp3_window_size(hdr);
size = gf_mp3_frame_size(hdr);
pos = ftell(read->stream);
fseek(read->stream, pos + size - 4, SEEK_SET);
}
fseek(read->stream, 0, SEEK_SET);
return 1;
}
static void MP3_OnLiveData(MP3Reader *read, char *data, u32 data_size)
{
u32 hdr, size, pos;
if (read->needs_connection) {
hdr = gf_mp3_get_next_header_mem(data, data_size, &pos);
if (!hdr) return;
read->sample_rate = gf_mp3_sampling_rate(hdr);
read->oti = gf_mp3_object_type_indication(hdr);
read->is_live = 1;
memset(&read->sl_hdr, 0, sizeof(GF_SLHeader));
read->needs_connection = 0;
gf_term_on_connect(read->service, NULL, GF_OK);
mp3_setup_object(read);
}
if (!data_size) return;
read->data = gf_realloc(read->data, sizeof(char)*(read->data_size+data_size) );
memcpy(read->data + read->data_size, data, sizeof(char)*data_size);
read->data_size += data_size;
if (!read->ch) return;
data = read->data;
data_size = read->data_size;
while (1) {
hdr = gf_mp3_get_next_header_mem(data, data_size, &pos);
if (hdr) size = gf_mp3_frame_size(hdr);
/*not enough data, copy over*/
if (!hdr || (pos+size>data_size)) {
char *d = gf_malloc(sizeof(char) * data_size);
memcpy(d, data, sizeof(char) * data_size);
gf_free(read->data);
read->data = d;
read->data_size = data_size;
MP3_RegulateDataRate(read);
return;
}
read->sl_hdr.accessUnitStartFlag = 1;
read->sl_hdr.accessUnitEndFlag = 1;
read->sl_hdr.AU_sequenceNumber++;
read->sl_hdr.compositionTimeStampFlag = 1;
read->sl_hdr.compositionTimeStamp += gf_mp3_window_size(hdr);
gf_term_on_sl_packet(read->service, read->ch, data + pos, size, &read->sl_hdr, GF_OK);
data += pos + size;
assert(data_size>=pos+size);
data_size -= pos+size;
}
}
/**
* Returns TRUE if file is ready to be read, FALSE otherwise
* @param read Reader
* @param minSizeToRead How much bytes do we need to start reading at minimum
*/
static Bool MP3_ConfigureFromFile(MP3Reader *read, u32 *minSizeToRead)
{
unsigned char id3v2[10];
u32 hdr, size;
u64 pos;
if (!read->stream) return 0;
/* ID3VVFFFFSIZE = 13bytes
* ID3 string
* VV = Version
* F = Flags
* SIZE = 32bits size with first Most Significant bit set to 0 -> 28 bits
* Size starts AFTER this header, meaning we have to add 10 bytes
*/
pos = fread(id3v2, sizeof(unsigned char), 10, read->stream);
*minSizeToRead = 0;
if (pos == 10){
/* Did we read an ID3v2 ? */
if (id3v2[0] == 'I' && id3v2[1] == 'D' && id3v2[2] == '3'){
int sz = 10 + ((id3v2[9] & 0x7f) + ((id3v2[8] & 0x7f) << 7) + ((id3v2[7] & 0x7f) << 14) + ((id3v2[6] & 0x7f) << 21));
//printf("Size of id3v2 header = %d\n", sz);
*minSizeToRead = sz;
}
}
gf_f64_seek(read->stream, 0, SEEK_SET);
hdr = gf_mp3_get_next_header(read->stream);
if (!hdr) return 0;
read->sample_rate = gf_mp3_sampling_rate(hdr);
read->oti = gf_mp3_object_type_indication(hdr);
gf_f64_seek(read->stream, 0, SEEK_SET);
if (!read->oti) return 0;
/*we don't have the full file...*/
if (read->is_remote) return 1;
// return 1;
gf_f64_seek(read->stream, 0, SEEK_SET);
read->duration = 0;
while (1) {
hdr = gf_mp3_get_next_header(read->stream);
if (!hdr) break;
read->duration += gf_mp3_window_size(hdr);
size = gf_mp3_frame_size(hdr);
pos = gf_f64_tell(read->stream);
gf_f64_seek(read->stream, pos + size - 4, SEEK_SET);
}
gf_f64_seek(read->stream, 0, SEEK_SET);
return 1;
}
GF_EXPORT
GF_RTPHinter *gf_hinter_track_new(GF_ISOFile *file, u32 TrackNum,
u32 Path_MTU, u32 max_ptime, u32 default_rtp_rate, u32 flags, u8 PayloadID,
Bool copy_media, u32 InterleaveGroupID, u8 InterleaveGroupPriority, GF_Err *e)
{
GF_SLConfig my_sl;
u32 descIndex, MinSize, MaxSize, avgTS, streamType, oti, const_dur, nb_ch, maxDTSDelta;
u8 OfficialPayloadID;
u32 TrackMediaSubType, TrackMediaType, hintType, nbEdts, required_rate, force_dts_delta, avc_nalu_size, PL_ID, bandwidth, IV_length, KI_length;
const char *url, *urn;
char *mpeg4mode;
Bool is_crypted, has_mpeg4_mapping;
GF_RTPHinter *tmp;
GF_ESD *esd;
*e = GF_BAD_PARAM;
if (!file || !TrackNum || !gf_isom_get_track_id(file, TrackNum)) return NULL;
if (!gf_isom_get_sample_count(file, TrackNum)) {
*e = GF_OK;
return NULL;
}
*e = GF_NOT_SUPPORTED;
nbEdts = gf_isom_get_edit_segment_count(file, TrackNum);
if (nbEdts>1) {
u64 et, sd, mt;
u8 em;
gf_isom_get_edit_segment(file, TrackNum, 1, &et, &sd, &mt, &em);
if ((nbEdts>2) || (em!=GF_ISOM_EDIT_EMPTY)) {
GF_LOG(GF_LOG_ERROR, GF_LOG_RTP, ("[rtp hinter] Cannot hint track whith EditList\n"));
return NULL;
}
}
if (nbEdts) gf_isom_remove_edit_segments(file, TrackNum);
if (!gf_isom_is_track_enabled(file, TrackNum)) return NULL;
/*by default NO PL signaled*/
PL_ID = 0;
OfficialPayloadID = 0;
force_dts_delta = 0;
streamType = oti = 0;
mpeg4mode = NULL;
required_rate = 0;
is_crypted = 0;
IV_length = KI_length = 0;
oti = 0;
nb_ch = 0;
avc_nalu_size = 0;
has_mpeg4_mapping = 1;
TrackMediaType = gf_isom_get_media_type(file, TrackNum);
TrackMediaSubType = gf_isom_get_media_subtype(file, TrackNum, 1);
/*for max compatibility with QT*/
if (!default_rtp_rate) default_rtp_rate = 90000;
/*timed-text is a bit special, we support multiple stream descriptions & co*/
if ( (TrackMediaType==GF_ISOM_MEDIA_TEXT) || (TrackMediaType==GF_ISOM_MEDIA_SUBT)) {
hintType = GF_RTP_PAYT_3GPP_TEXT;
oti = GPAC_OTI_TEXT_MPEG4;
streamType = GF_STREAM_TEXT;
/*fixme - this works cos there's only one PL for text in mpeg4 at the current time*/
PL_ID = 0x10;
} else {
if (gf_isom_get_sample_description_count(file, TrackNum) > 1) return NULL;
TrackMediaSubType = gf_isom_get_media_subtype(file, TrackNum, 1);
switch (TrackMediaSubType) {
case GF_ISOM_SUBTYPE_MPEG4_CRYP:
is_crypted = 1;
case GF_ISOM_SUBTYPE_MPEG4:
esd = gf_isom_get_esd(file, TrackNum, 1);
hintType = GF_RTP_PAYT_MPEG4;
if (esd) {
streamType = esd->decoderConfig->streamType;
oti = esd->decoderConfig->objectTypeIndication;
if (esd->URLString) hintType = 0;
/*AAC*/
if ((streamType==GF_STREAM_AUDIO) && esd->decoderConfig->decoderSpecificInfo
/*(nb: we use mpeg4 for MPEG-2 AAC)*/
&& ((oti==GPAC_OTI_AUDIO_AAC_MPEG4) || (oti==GPAC_OTI_AUDIO_AAC_MPEG4) || (oti==GPAC_OTI_AUDIO_AAC_MPEG2_MP) || (oti==GPAC_OTI_AUDIO_AAC_MPEG2_LCP) || (oti==GPAC_OTI_AUDIO_AAC_MPEG2_SSRP)) ) {
u32 sample_rate;
GF_M4ADecSpecInfo a_cfg;
gf_m4a_get_config(esd->decoderConfig->decoderSpecificInfo->data, esd->decoderConfig->decoderSpecificInfo->dataLength, &a_cfg);
nb_ch = a_cfg.nb_chan;
sample_rate = a_cfg.base_sr;
PL_ID = a_cfg.audioPL;
switch (a_cfg.base_object_type) {
case GF_M4A_AAC_MAIN:
case GF_M4A_AAC_LC:
if (flags & GP_RTP_PCK_USE_LATM_AAC) {
hintType = GF_RTP_PAYT_LATM;
break;
}
case GF_M4A_AAC_SBR:
case GF_M4A_AAC_PS:
case GF_M4A_AAC_LTP:
case GF_M4A_AAC_SCALABLE:
case GF_M4A_ER_AAC_LC:
case GF_M4A_ER_AAC_LTP:
case GF_M4A_ER_AAC_SCALABLE:
mpeg4mode = "AAC";
break;
case GF_M4A_CELP:
case GF_M4A_ER_CELP:
mpeg4mode = "CELP";
break;
}
required_rate = sample_rate;
}
/*MPEG1/2 audio*/
else if ((streamType==GF_STREAM_AUDIO) && ((oti==GPAC_OTI_AUDIO_MPEG2_PART3) || (oti==GPAC_OTI_AUDIO_MPEG1))) {
u32 sample_rate;
if (!is_crypted) {
GF_ISOSample *samp = gf_isom_get_sample(file, TrackNum, 1, NULL);
u32 hdr = GF_4CC((u8)samp->data[0], (u8)samp->data[1], (u8)samp->data[2], (u8)samp->data[3]);
nb_ch = gf_mp3_num_channels(hdr);
sample_rate = gf_mp3_sampling_rate(hdr);
gf_isom_sample_del(&samp);
hintType = GF_RTP_PAYT_MPEG12_AUDIO;
/*use official RTP/AVP payload type*/
OfficialPayloadID = 14;
required_rate = 90000;
}
/*encrypted MP3 must be sent through MPEG-4 generic to signal all ISMACryp stuff*/
else {
u8 bps;
gf_isom_get_audio_info(file, TrackNum, 1, &sample_rate, &nb_ch, &bps);
required_rate = sample_rate;
}
}
/*QCELP audio*/
else if ((streamType==GF_STREAM_AUDIO) && (oti==GPAC_OTI_AUDIO_13K_VOICE)) {
hintType = GF_RTP_PAYT_QCELP;
OfficialPayloadID = 12;
required_rate = 8000;
streamType = GF_STREAM_AUDIO;
nb_ch = 1;
}
/*EVRC/SVM audio*/
else if ((streamType==GF_STREAM_AUDIO) && ((oti==GPAC_OTI_AUDIO_EVRC_VOICE) || (oti==GPAC_OTI_AUDIO_SMV_VOICE)) ) {
hintType = GF_RTP_PAYT_EVRC_SMV;
required_rate = 8000;
streamType = GF_STREAM_AUDIO;
nb_ch = 1;
}
/*visual streams*/
else if (streamType==GF_STREAM_VISUAL) {
if (oti==GPAC_OTI_VIDEO_MPEG4_PART2) {
GF_M4VDecSpecInfo dsi;
gf_m4v_get_config(esd->decoderConfig->decoderSpecificInfo->data, esd->decoderConfig->decoderSpecificInfo->dataLength, &dsi);
PL_ID = dsi.VideoPL;
}
/*MPEG1/2 video*/
if ( ((oti>=GPAC_OTI_VIDEO_MPEG2_SIMPLE) && (oti<=GPAC_OTI_VIDEO_MPEG2_422)) || (oti==GPAC_OTI_VIDEO_MPEG1)) {
if (!is_crypted) {
hintType = GF_RTP_PAYT_MPEG12_VIDEO;
OfficialPayloadID = 32;
}
}
/*for ISMA*/
if (is_crypted) {
/*that's another pain with ISMACryp, even if no B-frames the DTS is signaled...*/
if (oti==GPAC_OTI_VIDEO_MPEG4_PART2) force_dts_delta = 22;
else if (oti==GPAC_OTI_VIDEO_AVC) {
flags &= ~GP_RTP_PCK_USE_MULTI;
force_dts_delta = 22;
}
flags |= GP_RTP_PCK_SIGNAL_RAP | GP_RTP_PCK_SIGNAL_TS;
}
required_rate = default_rtp_rate;
}
/*systems streams*/
else if (gf_isom_has_sync_shadows(file, TrackNum) || gf_isom_has_sample_dependency(file, TrackNum)) {
flags |= GP_RTP_PCK_SYSTEMS_CAROUSEL;
}
gf_odf_desc_del((GF_Descriptor*)esd);
}
break;
case GF_ISOM_SUBTYPE_3GP_H263:
hintType = GF_RTP_PAYT_H263;
required_rate = 90000;
streamType = GF_STREAM_VISUAL;
OfficialPayloadID = 34;
/*not 100% compliant (short header is missing) but should still work*/
oti = GPAC_OTI_VIDEO_MPEG4_PART2;
PL_ID = 0x01;
break;
case GF_ISOM_SUBTYPE_3GP_AMR:
required_rate = 8000;
hintType = GF_RTP_PAYT_AMR;
streamType = GF_STREAM_AUDIO;
has_mpeg4_mapping = 0;
nb_ch = 1;
break;
case GF_ISOM_SUBTYPE_3GP_AMR_WB:
required_rate = 16000;
hintType = GF_RTP_PAYT_AMR_WB;
streamType = GF_STREAM_AUDIO;
has_mpeg4_mapping = 0;
nb_ch = 1;
break;
case GF_ISOM_SUBTYPE_AVC_H264:
case GF_ISOM_SUBTYPE_AVC2_H264:
case GF_ISOM_SUBTYPE_SVC_H264:
{
GF_AVCConfig *avcc = gf_isom_avc_config_get(file, TrackNum, 1);
required_rate = 90000; /* "90 kHz clock rate MUST be used"*/
hintType = GF_RTP_PAYT_H264_AVC;
streamType = GF_STREAM_VISUAL;
avc_nalu_size = avcc->nal_unit_size;
oti = GPAC_OTI_VIDEO_AVC;
PL_ID = 0x0F;
gf_odf_avc_cfg_del(avcc);
}
break;
case GF_ISOM_SUBTYPE_3GP_QCELP:
required_rate = 8000;
hintType = GF_RTP_PAYT_QCELP;
streamType = GF_STREAM_AUDIO;
oti = GPAC_OTI_AUDIO_13K_VOICE;
OfficialPayloadID = 12;
nb_ch = 1;
break;
case GF_ISOM_SUBTYPE_3GP_EVRC:
case GF_ISOM_SUBTYPE_3GP_SMV:
required_rate = 8000;
hintType = GF_RTP_PAYT_EVRC_SMV;
streamType = GF_STREAM_AUDIO;
oti = (TrackMediaSubType==GF_ISOM_SUBTYPE_3GP_EVRC) ? GPAC_OTI_AUDIO_EVRC_VOICE : GPAC_OTI_AUDIO_SMV_VOICE;
nb_ch = 1;
break;
case GF_ISOM_SUBTYPE_3GP_DIMS:
hintType = GF_RTP_PAYT_3GPP_DIMS;
streamType = GF_STREAM_SCENE;
break;
case GF_ISOM_SUBTYPE_AC3:
hintType = GF_RTP_PAYT_AC3;
streamType = GF_STREAM_AUDIO;
gf_isom_get_audio_info(file, TrackNum, 1, NULL, &nb_ch, NULL);
break;
default:
/*ERROR*/
hintType = 0;
break;
}
}
/*not hintable*/
if (!hintType) return NULL;
/*we only support self-contained files for hinting*/
gf_isom_get_data_reference(file, TrackNum, 1, &url, &urn);
if (url || urn) return NULL;
*e = GF_OUT_OF_MEM;
GF_SAFEALLOC(tmp, GF_RTPHinter);
if (!tmp) return NULL;
/*override hinter type if requested and possible*/
if (has_mpeg4_mapping && (flags & GP_RTP_PCK_FORCE_MPEG4)) {
hintType = GF_RTP_PAYT_MPEG4;
avc_nalu_size = 0;
}
/*use static payload ID if enabled*/
else if (OfficialPayloadID && (flags & GP_RTP_PCK_USE_STATIC_ID) ) {
PayloadID = OfficialPayloadID;
}
tmp->file = file;
tmp->TrackNum = TrackNum;
tmp->avc_nalu_size = avc_nalu_size;
tmp->nb_chan = nb_ch;
/*spatial scalability check*/
tmp->has_ctts = gf_isom_has_time_offset(file, TrackNum);
/*get sample info*/
gf_media_get_sample_average_infos(file, TrackNum, &MinSize, &MaxSize, &avgTS, &maxDTSDelta, &const_dur, &bandwidth);
/*systems carousel: we need at least IDX and RAP signaling*/
if (flags & GP_RTP_PCK_SYSTEMS_CAROUSEL) {
flags |= GP_RTP_PCK_SIGNAL_RAP;
}
/*update flags in MultiSL*/
if (flags & GP_RTP_PCK_USE_MULTI) {
if (MinSize != MaxSize) flags |= GP_RTP_PCK_SIGNAL_SIZE;
if (!const_dur) flags |= GP_RTP_PCK_SIGNAL_TS;
}
if (tmp->has_ctts) flags |= GP_RTP_PCK_SIGNAL_TS;
/*default SL for RTP */
InitSL_RTP(&my_sl);
my_sl.timestampResolution = gf_isom_get_media_timescale(file, TrackNum);
/*override clockrate if set*/
if (required_rate) {
Double sc = required_rate;
sc /= my_sl.timestampResolution;
maxDTSDelta = (u32) (maxDTSDelta*sc);
my_sl.timestampResolution = required_rate;
}
/*switch to RTP TS*/
max_ptime = (u32) (max_ptime * my_sl.timestampResolution / 1000);
my_sl.AUSeqNumLength = gf_get_bit_size(gf_isom_get_sample_count(file, TrackNum));
my_sl.CUDuration = const_dur;
if (gf_isom_has_sync_points(file, TrackNum)) {
my_sl.useRandomAccessPointFlag = 1;
} else {
my_sl.useRandomAccessPointFlag = 0;
my_sl.hasRandomAccessUnitsOnlyFlag = 1;
}
if (is_crypted) {
Bool use_sel_enc;
gf_isom_get_ismacryp_info(file, TrackNum, 1, NULL, NULL, NULL, NULL, NULL, &use_sel_enc, &IV_length, &KI_length);
if (use_sel_enc) flags |= GP_RTP_PCK_SELECTIVE_ENCRYPTION;
}
// in case a different timescale was provided
tmp->OrigTimeScale = gf_isom_get_media_timescale(file, TrackNum);
tmp->rtp_p = gf_rtp_builder_new(hintType, &my_sl, flags, tmp,
MP4T_OnNewPacket, MP4T_OnPacketDone,
/*if copy, no data ref*/
copy_media ? NULL : MP4T_OnDataRef,
MP4T_OnData);
//init the builder
gf_rtp_builder_init(tmp->rtp_p, PayloadID, Path_MTU, max_ptime,
streamType, oti, PL_ID, MinSize, MaxSize, avgTS, maxDTSDelta, IV_length, KI_length, mpeg4mode);
/*ISMA compliance is a pain...*/
if (force_dts_delta) tmp->rtp_p->slMap.DTSDeltaLength = force_dts_delta;
/* Hint Track Setup */
tmp->TrackID = gf_isom_get_track_id(file, TrackNum);
tmp->HintID = tmp->TrackID + 65535;
while (gf_isom_get_track_by_id(file, tmp->HintID)) tmp->HintID++;
tmp->HintTrack = gf_isom_new_track(file, tmp->HintID, GF_ISOM_MEDIA_HINT, my_sl.timestampResolution);
gf_isom_setup_hint_track(file, tmp->HintTrack, GF_ISOM_HINT_RTP);
/*create a hint description*/
gf_isom_new_hint_description(file, tmp->HintTrack, -1, -1, 0, &descIndex);
gf_isom_rtp_set_timescale(file, tmp->HintTrack, descIndex, my_sl.timestampResolution);
if (hintType==GF_RTP_PAYT_MPEG4) {
tmp->rtp_p->slMap.ObjectTypeIndication = oti;
/*set this SL for extraction.*/
gf_isom_set_extraction_slc(file, TrackNum, 1, &my_sl);
}
tmp->bandwidth = bandwidth;
/*set interleaving*/
gf_isom_set_track_group(file, TrackNum, InterleaveGroupID);
if (!copy_media) {
/*if we don't copy data set hint track and media track in the same group*/
gf_isom_set_track_group(file, tmp->HintTrack, InterleaveGroupID);
} else {
gf_isom_set_track_group(file, tmp->HintTrack, InterleaveGroupID + OFFSET_HINT_GROUP_ID);
}
/*use user-secified priority*/
InterleaveGroupPriority*=2;
gf_isom_set_track_priority_in_group(file, TrackNum, InterleaveGroupPriority+1);
gf_isom_set_track_priority_in_group(file, tmp->HintTrack, InterleaveGroupPriority);
#if 0
/*QT FF: not setting these flags = server uses a random offset*/
gf_isom_rtp_set_time_offset(file, tmp->HintTrack, 1, 0);
/*we don't use seq offset for maintainance pruposes*/
gf_isom_rtp_set_time_sequence_offset(file, tmp->HintTrack, 1, 0);
#endif
*e = GF_OK;
return tmp;
}
