static GF_Err ISOW_Close(GF_StreamingCache *mc, Bool delete_cache)
{
GF_Err e;
ISOMReader *cache = (ISOMReader *)mc->priv;
if (!cache->mov || !cache->service) return GF_BAD_PARAM;
while (gf_list_count(cache->channels)) {
ISOMChannel *ch = (ISOMChannel *)gf_list_get(cache->channels, 0);
gf_list_rem(cache->channels, 0);
if (ch->cache_sample) {
gf_isom_add_sample(cache->mov, ch->track, 1, ch->cache_sample);
gf_isom_sample_del(&ch->cache_sample);
}
gf_free(ch);
}
if (delete_cache) {
gf_isom_delete(cache->mov);
e = GF_OK;
} else {
e = gf_isom_close(cache->mov);
}
cache->mov = NULL;
cache->service = NULL;
return e;
}
//写入aac数据，只有raw数据
bool EasyMP4Writer::WriteAACFrame(unsigned char*data,int len,long timestamp)
{
if (m_audiostartimestamp==-1)
{
m_audiostartimestamp=timestamp;
}
p_audiosample->IsRAP=1;
p_audiosample->dataLength=len;
memcpy( p_audiosample->data,data,len);
p_audiosample->DTS=timestamp-m_audiostartimestamp;
p_audiosample->CTS_Offset=0;
GF_Err gferr=gf_isom_add_sample(p_file,m_audiotrackid,i_audiodescidx,p_audiosample);
if (gferr==-1)
{
p_audiosample->DTS=timestamp-m_audiostartimestamp+15;
gf_isom_add_sample(p_file,m_audiotrackid,i_audiodescidx,p_audiosample);
}
return true;
}
//写入一帧，前四字节为该帧NAL长度
bool EasyMP4Writer::WriteH264Frame(unsigned char*data,int len,bool keyframe,long timestamp)
{
if (m_videostartimestamp==-1&&keyframe)
{
m_videostartimestamp=timestamp;
}
if (m_videostartimestamp!=-1)
{
p_videosample->IsRAP=keyframe;
p_videosample->dataLength=len;
memcpy(p_videosample->data,data,len);
p_videosample->DTS=timestamp-m_videostartimestamp;
p_videosample->CTS_Offset=0;
GF_Err gferr=gf_isom_add_sample(p_file,m_videtrackid,i_videodescidx,p_videosample);
if (gferr==-1)
{
p_videosample->DTS=timestamp-m_videostartimestamp+15;
gf_isom_add_sample(p_file,m_videtrackid,i_videodescidx,p_videosample);
}
}
return true;
}
//stores the hint sample in the file
//set IsRandomAccessPoint if you want to indicate that this is a random access point
//in the stream
GF_Err gf_isom_end_hint_sample(GF_ISOFile *the_file, u32 trackNumber, u8 IsRandomAccessPoint)
{
GF_TrackBox *trak;
GF_HintSampleEntryBox *entry;
u32 dataRefIndex;
GF_Err e;
GF_BitStream *bs;
GF_ISOSample *samp;
trak = gf_isom_get_track_from_file(the_file, trackNumber);
if (!trak || !IsHintTrack(trak)) return GF_BAD_PARAM;
e = Media_GetSampleDesc(trak->Media, trak->Media->information->sampleTable->currentEntryIndex, (GF_SampleEntryBox **) &entry, &dataRefIndex);
if (e) return e;
if (!entry->hint_sample) return GF_BAD_PARAM;
//first of all, we need to adjust the offset for data referenced IN THIS hint sample
//and get some PckSize
e = AdjustHintInfo(entry, trak->Media->information->sampleTable->SampleSize->sampleCount + 1);
if (e) return e;
//ok, let's write the sample
bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
e = gf_isom_hint_sample_write(entry->hint_sample, bs);
if (e) {
gf_bs_del(bs);
return e;
}
samp = gf_isom_sample_new();
samp->CTS_Offset = 0;
samp->IsRAP = IsRandomAccessPoint;
samp->DTS = entry->hint_sample->TransmissionTime;
//get the sample
gf_bs_get_content(bs, &samp->data, &samp->dataLength);
gf_bs_del(bs);
//finally add the sample
e = gf_isom_add_sample(the_file, trackNumber, trak->Media->information->sampleTable->currentEntryIndex, samp);
gf_isom_sample_del(&samp);
//and delete the sample in our entry ...
gf_isom_hint_sample_del(entry->hint_sample);
entry->hint_sample = NULL;
return e;
}
static int write_frame( hnd_t handle, uint8_t *p_nalu, int i_size, x264_picture_t *p_picture )
{
mp4_hnd_t *p_mp4 = handle;
int64_t dts;
int64_t cts;
if( check_buffer( p_mp4, p_mp4->p_sample->dataLength + i_size ) )
return -1;
memcpy( p_mp4->p_sample->data + p_mp4->p_sample->dataLength, p_nalu, i_size );
p_mp4->p_sample->dataLength += i_size;
if( !p_mp4->i_numframe )
p_mp4->i_delay_time = p_picture->i_dts * -1;
if( p_mp4->b_dts_compress )
{
if( p_mp4->i_numframe == 1 )
p_mp4->i_init_delta = (p_picture->i_dts + p_mp4->i_delay_time) * p_mp4->i_time_inc;
dts = p_mp4->i_numframe > p_mp4->i_delay_frames
? p_picture->i_dts * p_mp4->i_time_inc
: p_mp4->i_numframe * (p_mp4->i_init_delta / p_mp4->i_dts_compress_multiplier);
cts = p_picture->i_pts * p_mp4->i_time_inc;
}
else
{
dts = (p_picture->i_dts + p_mp4->i_delay_time) * p_mp4->i_time_inc;
cts = (p_picture->i_pts + p_mp4->i_delay_time) * p_mp4->i_time_inc;
}
p_mp4->p_sample->IsRAP = p_picture->b_keyframe;
p_mp4->p_sample->DTS = dts;
p_mp4->p_sample->CTS_Offset = (uint32_t)(cts - dts);
gf_isom_add_sample( p_mp4->p_file, p_mp4->i_track, p_mp4->i_descidx, p_mp4->p_sample );
p_mp4->p_sample->dataLength = 0;
p_mp4->i_numframe++;
return i_size;
}
static GF_Err ISOW_Write(GF_StreamingCache *mc, LPNETCHANNEL ch, char *data, u32 data_size, GF_SLHeader *sl_hdr)
{
ISOMChannel *mch;
GF_ESD *esd;
u32 di, mtype;
u64 DTS, CTS;
ISOMReader *cache = (ISOMReader *)mc->priv;
if (!cache->mov || !cache->service) return GF_BAD_PARAM;
mch = isor_get_channel(cache, ch);
if (!mch) {
Bool mapped;
GF_NetworkCommand com;
com.base.on_channel = ch;
com.base.command_type = GF_NET_CHAN_GET_ESD;
gf_service_command(cache->service, &com, GF_OK);
if (!com.cache_esd.esd) return GF_SERVICE_ERROR;
esd = (GF_ESD *)com.cache_esd.esd;
switch (esd->decoderConfig->streamType) {
case GF_STREAM_OD:
mtype = GF_ISOM_MEDIA_OD;
break;
case GF_STREAM_SCENE:
mtype = GF_ISOM_MEDIA_SCENE;
break;
case GF_STREAM_VISUAL:
mtype = GF_ISOM_MEDIA_VISUAL;
break;
case GF_STREAM_AUDIO:
mtype = GF_ISOM_MEDIA_AUDIO;
break;
case GF_STREAM_MPEG7:
mtype = GF_ISOM_MEDIA_MPEG7;
break;
case GF_STREAM_OCI:
mtype = GF_ISOM_MEDIA_OCI;
break;
case GF_STREAM_IPMP:
mtype = GF_ISOM_MEDIA_IPMP;
break;
case GF_STREAM_MPEGJ:
mtype = GF_ISOM_MEDIA_MPEGJ;
break;
case GF_STREAM_TEXT:
mtype = GF_ISOM_MEDIA_TEXT;
break;
default:
return GF_NOT_SUPPORTED;
}
GF_SAFEALLOC(mch, ISOMChannel);
if (!mch) {
return GF_OUT_OF_MEM;
}
mch->time_scale = esd->slConfig->timestampResolution;
mch->streamType = esd->decoderConfig->streamType;
mch->track = gf_isom_new_track(cache->mov, com.cache_esd.esd->ESID, mtype, mch->time_scale);
mch->is_playing = GF_TRUE;
mch->channel = ch;
mch->owner = cache;
gf_isom_set_track_enabled(cache->mov, mch->track, 1);
/*translate 3GP streams to MP4*/
mapped = GF_FALSE;
if (esd->decoderConfig->objectTypeIndication==GPAC_OTI_MEDIA_GENERIC) {
char szCode[5];
strncpy(szCode, esd->decoderConfig->decoderSpecificInfo->data, 4);
szCode[4]=0;
if (!stricmp(szCode, "samr") || !stricmp(szCode, "amr ") || !stricmp(szCode, "sawb")) {
GF_3GPConfig amrc;
mapped = GF_TRUE;
memset(&amrc, 0, sizeof(GF_3GPConfig));
amrc.frames_per_sample = (u32) esd->decoderConfig->decoderSpecificInfo->data[13];
amrc.type = (!stricmp(szCode, "sawb")) ? GF_ISOM_SUBTYPE_3GP_AMR_WB : GF_ISOM_SUBTYPE_3GP_AMR;
amrc.vendor = GF_VENDOR_GPAC;
gf_isom_3gp_config_new(cache->mov, mch->track, &amrc, NULL, NULL, &di);
} else if (!stricmp(szCode, "h263")) {
GF_3GPConfig h263c;
memset(&h263c, 0, sizeof(GF_3GPConfig));
h263c.type = GF_ISOM_SUBTYPE_3GP_H263;
h263c.vendor = GF_VENDOR_GPAC;
gf_isom_3gp_config_new(cache->mov, mch->track, &h263c, NULL, NULL, &di);
mapped = GF_TRUE;
}
}
if (!mapped) gf_isom_new_mpeg4_description(cache->mov, mch->track, esd, NULL, NULL, &di);
if (com.cache_esd.is_iod_stream) gf_isom_add_track_to_root_od(cache->mov, mch->track);
gf_list_add(cache->channels, mch);
}
/*first sample, cache it*/
if (!mch->cache_sample) {
mch->cache_seed_ts = sl_hdr->decodingTimeStamp;
mch->cache_sample = gf_isom_sample_new();
mch->cache_sample->IsRAP = sl_hdr->randomAccessPointFlag;
mch->cache_sample->dataLength = data_size;
mch->cache_sample->data = (char*)gf_malloc(sizeof(char)*data_size);
memcpy(mch->cache_sample->data, data, sizeof(char)*data_size);
return GF_OK;
}
/*adjust DTS/CTS*/
DTS = sl_hdr->decodingTimeStamp - mch->cache_seed_ts;
if ((mch->streamType==GF_STREAM_VISUAL) && (DTS<=mch->cache_sample->DTS)) {
assert(DTS>mch->prev_dts);
CTS = mch->cache_sample->DTS + mch->cache_sample->CTS_Offset;
mch->cache_sample->CTS_Offset = 0;
/*first time, shift all CTS*/
if (!mch->frame_cts_offset) {
u32 i, count = gf_isom_get_sample_count(cache->mov, mch->track);
mch->frame_cts_offset = (u32) (DTS-mch->prev_dts);
for (i=0; i<count; i++) {
gf_isom_modify_cts_offset(cache->mov, mch->track, i+1, mch->frame_cts_offset);
}
mch->cache_sample->CTS_Offset += mch->frame_cts_offset;
}
mch->cache_sample->DTS = mch->prev_dts + mch->frame_cts_offset;
mch->cache_sample->CTS_Offset += (u32) (CTS-mch->cache_sample->DTS);
}
/*deal with reference picture insertion: if no CTS offset and biggest CTS until now, this is
a reference insertion - we must check that in order to make sure we have strictly increasing DTSs*/
if (mch->max_cts && !mch->cache_sample->CTS_Offset && (mch->cache_sample->DTS+mch->cache_sample->CTS_Offset > mch->max_cts)) {
assert(mch->cache_sample->DTS > mch->prev_dts + mch->frame_cts_offset);
CTS = mch->cache_sample->DTS + mch->cache_sample->CTS_Offset;
mch->cache_sample->DTS = mch->prev_dts + mch->frame_cts_offset;
mch->cache_sample->CTS_Offset = (u32) (CTS-mch->cache_sample->DTS);
}
if (mch->cache_sample->CTS_Offset)
mch->max_cts = mch->cache_sample->DTS+mch->cache_sample->CTS_Offset;
/*add cache*/
gf_isom_add_sample(cache->mov, mch->track, 1, mch->cache_sample);
assert(!mch->prev_dts || (mch->prev_dts < mch->cache_sample->DTS));
mch->prev_dts = mch->cache_sample->DTS;
mch->duration = MAX(mch->max_cts, mch->prev_dts);
gf_isom_sample_del(&mch->cache_sample);
/*store sample*/
mch->cache_sample = gf_isom_sample_new();
mch->cache_sample->IsRAP = sl_hdr->randomAccessPointFlag;
mch->cache_sample->DTS = DTS + mch->frame_cts_offset;
mch->cache_sample->CTS_Offset = (u32) (sl_hdr->compositionTimeStamp - mch->cache_seed_ts - DTS);
mch->cache_sample->dataLength = data_size;
mch->cache_sample->data = (char*)gf_malloc(sizeof(char)*data_size);
memcpy(mch->cache_sample->data, data, sizeof(char)*data_size);
return GF_OK;
}
int main(int argc, char **argv)
{
GF_ISOFile *movie;
GF_ESD *esd;
GF_Err e;
Double gb_size = 5.0;
u8 store_mode;
u32 track, di, i, nb_samp;
GF_ISOSample *samp;
store_mode = GF_ISOM_OPEN_WRITE;
for (i=1; i<argc; i++) {
if (!strcmp(argv[i], "-flat")) store_mode = GF_ISOM_OPEN_WRITE;
else if (!strcmp(argv[i], "-inter")) store_mode = GF_ISOM_WRITE_EDIT;
else if (!strcmp(argv[i], "-size") && (i+1<argc)) {
gb_size = atof(argv[i+1]);
i++;
}
else if (!strcmp(argv[i], "-h")) {
PrintUsage();
return 0;
}
}
nb_samp = (u32) (gb_size*1024);
fprintf(stdout, "Creating test file %s - %g GBytes - %d samples - %s mode\n", TEST_FILE_NAME, gb_size, nb_samp, (store_mode == GF_ISOM_OPEN_WRITE) ? "Flat" : "Interleaved");
movie = gf_isom_open(TEST_FILE_NAME, store_mode, NULL);
if (!movie) {
fprintf(stdout, "Error creating file: %s\n", gf_error_to_string(gf_isom_last_error(NULL)));
return 1;
}
track = gf_isom_new_track(movie, 1, GF_ISOM_MEDIA_VISUAL, 25);
esd = gf_odf_desc_esd_new(2);
esd->decoderConfig->streamType = 4;
gf_isom_new_mpeg4_description(movie, track, esd, NULL, NULL, &di);
samp = gf_isom_sample_new();
samp->dataLength = 1024*1024;
samp->data = gf_malloc(sizeof(char)*samp->dataLength);
memset(samp->data, 0, sizeof(char)*samp->dataLength);
for (i=0; i<nb_samp; i++) {
if (samp->DTS % 25) samp->IsRAP = 0;
else samp->IsRAP = 1;
e = gf_isom_add_sample(movie, track, di, samp);
samp->DTS += 1;
fprintf(stdout, "Writing sample %d / %d \r", i+1, nb_samp);
if (e) break;
}
gf_isom_sample_del(&samp);
if (e) {
fprintf(stdout, "\nError writing sample %d\n", i);
gf_isom_delete(movie);
return 1;
}
fprintf(stdout, "\nDone writing samples\n");
e = gf_isom_close(movie);
if (e) {
fprintf(stdout, "Error writing file\n");
return 1;
}
return 0;
}
