int quicktime_set_video(quicktime_t *file,
int tracks,
int frame_w,
int frame_h,
double frame_rate,
char *compressor)
{
int i;
quicktime_trak_t *trak;
if(tracks)
{
quicktime_mhvd_init_video(file, &(file->moov.mvhd), frame_rate);
file->total_vtracks = tracks;
file->vtracks = (quicktime_video_map_t*)calloc(1, sizeof(quicktime_video_map_t) * file->total_vtracks);
for(i = 0; i < tracks; i++)
{
trak = quicktime_add_track(file);
quicktime_trak_init_video(file, trak, frame_w, frame_h, frame_rate, compressor);
quicktime_init_video_map(&(file->vtracks[i]), trak);
}
}
return 0;
}
int quicktime_set_audio(quicktime_t *file,
int channels,
long sample_rate,
int bits,
char *compressor)
{
quicktime_trak_t *trak;
/* allocate an arbitrary number of tracks */
if(channels)
{
/* Fake the bits parameter for some formats. */
if(quicktime_match_32(compressor, QUICKTIME_ULAW) ||
quicktime_match_32(compressor, QUICKTIME_IMA4)) bits = 16;
file->atracks = (quicktime_audio_map_t*)calloc(1, sizeof(quicktime_audio_map_t));
trak = quicktime_add_track(file);
quicktime_trak_init_audio(file,
trak,
channels,
sample_rate,
bits,
compressor);
quicktime_init_audio_map(&(file->atracks[0]), trak);
file->atracks[file->total_atracks].track = trak;
file->atracks[file->total_atracks].channels = channels;
file->atracks[file->total_atracks].current_position = 0;
file->atracks[file->total_atracks].current_chunk = 1;
file->total_atracks++;
}
return 1; /* Return the number of tracks created */
}
int quicktime_set_audio_hint(quicktime_t *file, int audioTrack,
char *payloadName, u_int* pPayloadNumber,
int maxPktSize)
{
quicktime_audio_map_t* pMap = NULL;
quicktime_trak_t* hintTrak = NULL;
int timeScale;
float frameRate;
int sampleDuration;
char rtpMapBuf[128];
char sdpBuf[256];
/* check our arguments */
if (file == NULL) {
return -1;
}
if (audioTrack < 0 || audioTrack > file->total_atracks) {
return -1;
}
if (payloadName == NULL) {
return -1;
}
pMap = &file->atracks[audioTrack];
timeScale = quicktime_audio_time_scale(file, audioTrack);
if (timeScale == 0) {
return -1;
}
sampleDuration = file->atracks[audioTrack].track->mdia.minf.stbl.stts.table[0].sample_duration;
/* add the hint track */
hintTrak = quicktime_add_track(&(file->moov));
if (*pPayloadNumber == 0) {
(*pPayloadNumber) = 96 + file->total_hint_tracks++;
}
/* initialize it to reference the audio track */
quicktime_trak_init_hint(file, hintTrak, pMap->track,
maxPktSize, timeScale, sampleDuration);
/* set the payload info */
hintTrak->hint_udta.hinf.payt.payloadNumber = *pPayloadNumber;
sprintf(rtpMapBuf, "%s/%u", payloadName, timeScale);
strcpy(hintTrak->hint_udta.hinf.payt.rtpMapString, rtpMapBuf);
/* set the SDP media section */
sprintf(sdpBuf,
"m=audio 0 RTP/AVP %u\015\012a=rtpmap:%u %s\015\012a=control:trackID=%u\015\012",
*pPayloadNumber, *pPayloadNumber, rtpMapBuf, hintTrak->tkhd.track_id);
quicktime_sdp_set(&(hintTrak->hint_udta.hnti.sdp), sdpBuf);
pMap->hintTracks[pMap->totalHintTracks] = hintTrak;
pMap->hintPositions[pMap->totalHintTracks] = 0;
pMap->totalHintTracks++;
return (pMap->totalHintTracks - 1);
}
int quicktime_set_audio(quicktime_t *file,
int channels,
long sample_rate,
int bits,
int sample_size,
int time_scale,
int sample_duration,
char *compressor)
{
int i, j;
quicktime_trak_t *trak;
/* delete any existing tracks */
for(i = 0; i < file->total_atracks; i++) {
for (j = 0; j < file->atracks[i].totalHintTracks; j++) {
quicktime_delete_trak(&(file->moov),
file->atracks[i].hintTracks[j]);
free(file->atracks[i].hintTracks[j]);
file->atracks[i].hintTracks[j] = NULL;
file->total_hint_tracks--;
}
quicktime_delete_audio_map(&(file->atracks[i]));
quicktime_delete_trak(&(file->moov), file->atracks[i].track);
}
free(file->atracks);
file->atracks = NULL;
file->total_atracks = 0;
if(channels) {
/* Fake the bits parameter for some formats. */
if(quicktime_match_32(compressor, QUICKTIME_ULAW) ||
quicktime_match_32(compressor, QUICKTIME_IMA4)) bits = 16;
file->atracks = (quicktime_audio_map_t*)
calloc(1, sizeof(quicktime_audio_map_t));
trak = quicktime_add_track(&(file->moov));
quicktime_trak_init_audio(file, trak, channels, sample_rate, bits,
sample_size, time_scale, sample_duration, compressor);
quicktime_init_audio_map(&(file->atracks[0]), trak);
file->atracks[file->total_atracks].track = trak;
file->atracks[file->total_atracks].channels = channels;
file->atracks[file->total_atracks].current_position = 0;
file->atracks[file->total_atracks].current_chunk = 1;
file->total_atracks++;
}
return 1; /* Return the number of tracks created */
}
int quicktime_set_video(quicktime_t *file,
int tracks,
int frame_w,
int frame_h,
float frame_rate,
int time_scale,
char *compressor)
{
int i, j;
quicktime_trak_t *trak;
/* delete any existing tracks */
for(i = 0; i < file->total_vtracks; i++) {
for (j = 0; j < file->vtracks[i].totalHintTracks; j++) {
quicktime_delete_trak(&(file->moov),
file->vtracks[i].hintTracks[j]);
file->vtracks[i].hintTracks[j] = NULL;
file->total_hint_tracks--;
}
quicktime_delete_video_map(&(file->vtracks[i]));
quicktime_delete_trak(&(file->moov), file->vtracks[i].track);
}
free(file->vtracks);
file->vtracks = NULL;
file->total_vtracks = 0;
if (tracks > 0) {
file->total_vtracks = tracks;
file->vtracks = (quicktime_video_map_t*)calloc(1, sizeof(quicktime_video_map_t) * file->total_vtracks);
for(i = 0; i < tracks; i++)
{
trak = quicktime_add_track(&(file->moov));
quicktime_trak_init_video(file, trak, frame_w, frame_h, frame_rate,
time_scale, compressor);
quicktime_init_video_map(&(file->vtracks[i]), trak);
}
}
return 0;
}
int quicktime_set_video_hint(quicktime_t *file, int videoTrack,
char *payloadName, u_int* pPayloadNumber,
int maxPktSize)
{
quicktime_video_map_t* pMap = NULL;
quicktime_trak_t* hintTrak = NULL;
float frameRate;
int timeScale;
int sampleDuration;
char rtpMapBuf[128];
char sdpBuf[1024];
/* check our arguments */
if (file == NULL) {
return -1;
}
if (videoTrack < 0 || videoTrack > file->total_vtracks) {
return -1;
}
if (payloadName == NULL) {
return -1;
}
frameRate = quicktime_video_frame_rate(file, videoTrack);
if (frameRate == 0.0) {
return -1;
}
timeScale = quicktime_video_time_scale(file, videoTrack);
if (timeScale == 0) {
return -1;
}
sampleDuration = timeScale / frameRate;
if (sampleDuration == 0) {
return -1;
}
/* add the hint track */
hintTrak = quicktime_add_track(&(file->moov));
if (*pPayloadNumber == 0) {
(*pPayloadNumber) = 96 + file->total_hint_tracks++;
}
pMap = &file->vtracks[videoTrack];
/* initialize it to reference the video track */
quicktime_trak_init_hint(file, hintTrak, pMap->track,
maxPktSize, timeScale, sampleDuration);
/* set the payload info */
hintTrak->hint_udta.hinf.payt.payloadNumber = *pPayloadNumber;
sprintf(rtpMapBuf, "%s/90000", payloadName);
strcpy(hintTrak->hint_udta.hinf.payt.rtpMapString, rtpMapBuf);
/* set the SDP media section */
sprintf(sdpBuf,
"m=video 0 RTP/AVP %u\015\012a=rtpmap:%u %s\015\012a=control:trackID=%u\015\012",
*pPayloadNumber, *pPayloadNumber, rtpMapBuf, hintTrak->tkhd.track_id);
quicktime_sdp_set(&(hintTrak->hint_udta.hnti.sdp), sdpBuf);
pMap->hintTracks[pMap->totalHintTracks] = hintTrak;
pMap->hintPositions[pMap->totalHintTracks] = 0;
pMap->totalHintTracks++;
return (pMap->totalHintTracks - 1);
}
