int ReadMedia::decodeAudio( gavl_audio_frame_t * af ) {
lockState();
if (m_state != STATE_READY || m_audio_stream_count < 1 || m_fifoaudio == NULL ) {
unlockState();
return -1;
}
if ( !m_fifoaudio->Get( af ) ) {
if ( m_aeof ) {
m_pcm_seek = SEEK_NOTHING;
unlockState();
signalA();
return 0;
} else {
printf("Couldn't get an audio frame, audiofifo is %f full.\n", m_fifoaudio->getSizePercentage()); // this can only happen if the fifo is empty
unlockState();
signalA();
return -1;
}
}
//m_atime = af->timestamp / (double)m_audio_format.samplerate;
unlockState();
signalA();
return 1 ;
}
bool ReadMedia::rewind() {
// NOTE!! Always check for stream count before setting aeof or veof
lockState();
if ( m_state == STATE_READY && m_file != NULL) {
//printf("ReadMedia::rewind(), valid_samples=%d\n", m_audio_frame->valid_samples);
m_pcm_seek = SEEK_REWIND;
if(m_audio_stream_count) m_aeof = false;
//m_atime = 0;
m_frame_seek=SEEK_REWIND;
if (m_video_stream_count) m_veof = false;
//m_vtime=0;
unlockState();
if (m_audio_stream_count) {
signalA(); // only signal one or the other here
//printf("ReadMedia::rewind(), signaled audio\n");
// we are gong to flush here even though it is flushed
// during the audio or video thread. This will ensure our fifo
// is clean and empty. Otherwise, the audio thread may be waiting
// at the bottom of its loop and not make it to the flush part even
// though we signalled it.
if (m_fifoaudio)
m_fifoaudio->Flush();
}
else if (m_video_stream_count) {
signalV();
if (m_fifovideo)
m_fifovideo->Flush();
}
return true;
}
unlockState();
return false;
}
int ReadMedia::decodeVideo( gavl_video_frame_t * vf ) {
// check state first, if state is ready, we can check the other vars without locking
lockState();
if (m_state != STATE_READY || m_video_stream_count < 1 || m_fifovideo == NULL ) {
unlockState();
return -1;
}
if (!m_fifovideo->Get( vf ) ) {
if ( m_veof ) {
m_frame_seek = SEEK_NOTHING;
unlockState();
signalV();
return 0;
} else {
//printf("Couldn't get a video frame, videofifo is %f full\n", m_fifovideo->getSizePercentage()); // this can only happen if the fifo is empty
unlockState();
signalV();
return -1; // return with error
}
}
//m_vtime = vf->timestamp / (double)m_video_format.timescale;
unlockState();
signalV();
return 1 ;
}
bool ReadMedia::pcmSeek( int64_t samples ) {
lockState();
if (m_state == STATE_READY && m_file && bgav_can_seek( m_file) && samples >= 0 && samples < m_num_samples ) {
m_pcm_seek = samples;
unlockState();
signalAV();
return true;
} else {
m_pcm_seek = SEEK_NOTHING;
unlockState();
return false;
}
}
int64_t ReadMedia::getLengthInVideoFrames() {
int64_t frames = 0;
lockState();
frames = m_num_frames;
unlockState();
return frames;
}
int64_t ReadMedia::getLengthInAudioSamples() {
int64_t samples = 0;
lockState();
samples = m_num_samples;
unlockState();
return samples;
}
double ReadMedia::getLengthInSeconds() {
double secs = 0.0;
lockState();
secs = m_length_in_seconds;
unlockState();
return secs;
}
gavl_time_t ReadMedia::getLengthInGavlTime() {
gavl_time_t time = 0;
lockState();
time = m_length_in_gavltime;
unlockState();
return time;
}
int ReadMedia::getVideoTimescale() {
int t=0;
lockState();
t = m_video_format.timescale;
unlockState();
return t;
}
// NOT PUBLIC
bool ReadMedia::getVEOF() {
bool tmp = false;
lockState();
tmp = m_veof;
unlockState();
return tmp;
}
int ReadMedia::getSamplesPerFrame() {
int spf=0;
lockState();
spf = m_audio_format.samples_per_frame;
unlockState();
return spf;
}
int ReadMedia::getVideoStreamCount() {
int vsc=0;
lockState();
vsc = m_video_stream_count;
unlockState();
return vsc;
}
// NOT PUBLIC
int ReadMedia::getCommand() {
int cmd= CMD_NULL;
lockState();
cmd = m_cmd;
unlockState();
return cmd;
}
int ReadMedia::getState() {
int s=STATE_EMPTY;
lockState();
s = m_state;
unlockState();
return s;
}
// NOT PUBLIC
// killAVThreads is only called from the opener thread
// and from the destructor
// THIS IS NOT REALLY A PUBLIC function
void ReadMedia::killAVThreads() {
lockState();
m_state = STATE_EMPTY;
quit_av_threads = true;
unlockState();
signalAV();
signalAV();
// FIRST need to join the threads that exist and are running
if (m_audio_thread_ret == 0) {
pthread_join( m_thread_fillaudiofifo, NULL);
//pthread_detach( m_thread_fillaudiofifo);
}
if (m_video_thread_ret == 0){
pthread_join( m_thread_fillvideofifo, NULL);
//pthread_detach( m_thread_fillvideofifo);
}
m_audio_thread_ret = -1;
m_video_thread_ret = -1;
// no need to lock here
quit_av_threads = false;
}
bool ReadMedia::quitAVThreads() {
bool b =false;
lockState();
b = quit_av_threads;
unlockState();
return b;
}
int ReadMedia::getAudioStreamCount() {
int asc=0;
lockState();
asc = m_audio_stream_count;
unlockState();
return asc;
}
// NOT PUBLIC
void ReadMedia::setVideoStreamCount(int s){
lockState();
m_video_stream_count=s;
if (s==0) // if there are no video streams, video is at eof
m_veof = true;
else m_veof =false;
unlockState();
}
// NOT PUBLIC
int64_t ReadMedia::frameSeek() {
int64_t tmp=SEEK_NOTHING;
lockState();
tmp = m_frame_seek;
m_frame_seek = SEEK_NOTHING;
unlockState();
return tmp;
}
int ReadMedia::getAudioChannelCount() {
int ch=0;
lockState();
//if (m_state == STATE_READY )
ch = m_audio_format.num_channels;
unlockState();
return ch;
}
int ReadMedia::getAudioSamplerate() {
int sr=0;
lockState();
//if (m_state == STATE_READY )
sr = m_audio_format.samplerate;
unlockState();
return sr;
}
float ReadMedia::getAudioFifoSizePercentage() {
float f=0.0;
lockState();
if (m_fifoaudio)
f = m_fifoaudio->getSizePercentage();
unlockState();
return f;
}
// NOT PUBLIC
void ReadMedia::setAudioStreamCount(int s){
lockState();
m_audio_stream_count=s;
if (s == 0) // no audio streams, we are already at audio eof
m_aeof = true;
else m_aeof = false;
unlockState();
}
// NOT PUBLIC
int64_t ReadMedia::pcmSeek() {
int64_t tmp=SEEK_NOTHING;
lockState();
tmp = m_pcm_seek;
m_pcm_seek = SEEK_NOTHING;
unlockState();
return tmp;
}
bool ReadMedia::getEOF() {
bool tmp = true;
lockState();
if (m_state == STATE_READY)
tmp = (m_aeof && m_veof);
unlockState();
//printf("ReadMedia:getEOF=%d, aeof=%d, veof=%d\n", tmp, m_aeof, m_veof);
return tmp;
}
void ReadMedia::setBufferCallback(bgav_buffer_callback bc, void *v ) {
lockState();
m_buffer_callback = bc;
m_buffer_callback_data = v;
// set up callbacks.
if (m_buffer_callback) {
bgav_options_set_buffer_callback( m_opt, m_buffer_callback, m_buffer_callback_data);
}
unlockState();
};
bool ReadMedia::getLoop() {
bool tmp = true;
lockState();
if (m_file && bgav_can_seek( m_file) ) {
tmp = m_loop;
} else {
tmp = false; // we can't loop on file, return false
// but leave the loop var untouched
}
unlockState();
return tmp;
}
bool ReadMedia::timeSeek(double seconds) {
gavl_time_t gt = gavl_seconds_to_time( seconds ) ;
lockState();
if (m_state == STATE_READY && m_file && bgav_can_seek( m_file) && seconds >= 0.0 && seconds < m_length_in_seconds ) {
if (m_audio_stream_count) {
m_pcm_seek = gavl_time_to_samples(m_audio_format.samplerate, gt );
if (m_pcm_seek >= m_num_samples || m_pcm_seek < 0)
m_pcm_seek = SEEK_NOTHING;
unlockState();
signalAV();
return true;
} else if ( m_video_stream_count && m_video_format.framerate_mode == GAVL_FRAMERATE_CONSTANT ) {
m_frame_seek = gavl_time_to_frames( m_video_format.timescale, m_video_format.frame_duration, gt );
if (m_frame_seek >= m_num_frames || m_frame_seek < 0 )
m_frame_seek = SEEK_NOTHING;
unlockState();
signalAV();
return true;
}
}
unlockState();
return false;
}
void ReadMedia::openFile( char * fn, int vsize, int asize, int spf) {
lockState();
/*
if ( strcmp(m_filename, fn) == 0 && m_state == STATE_READY) {
printf("%s is already open for action. \n", m_filename);
unlockState();
callOpenCallback();
return;
}
*/
// signal the dispatcher that we want an new file
m_audio_format.samples_per_frame = spf ;
m_afifosize = asize;
m_vfifosize = vsize;
sprintf(m_filename, "%s", fn);
m_cmd = CMD_OPEN ;
unlockState();
signalDispatcher();
}
void CState::clearState()
{
unlockState();
currentState_.clear();
}
