AudioSystem::sample_t* JackAudioSystem::output_buffer(int index)
{
jack_nframes_t nframes = output_buffer_size(index);
if(index == 0) {
assert(_port[0]);
return static_cast<float*>( jack_port_get_buffer(_port[0], nframes) );
}else if(index == 1) {
assert(_port[1]);
return static_cast<float*>( jack_port_get_buffer(_port[1], nframes) );
}
return 0;
}
int VideoEncoderFfmpeg::Encode(int force_key_frame, int *is_key_frame)
{
if (bitrate() < 0)
return 0;
frag_writer()->Clear();
frame_->pict_type = AV_PICTURE_TYPE_NONE != force_key_frame ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_NONE;
int enc_size = avcodec_encode_video(context_,
output_buffer(), output_buffer_size(), frame_);
if (0 == enc_size)
return 0;
if (NULL != is_key_frame)
*is_key_frame = frame_->key_frame;
int size = 0;
Fragmenter *fragmenter = GetFragmenter();
if (fragsize() > 0 && NULL != fragmenter) {
#ifdef FRAG_FILE_DEBUG
{
static int frame_count_enc = 0;
FILE *fd = NULL;
char filename[50];
sprintf_s(filename, "out_enc_%03d.dbg", frame_count_enc);
_VERIFY(0 == fopen_s(&fd, filename, "wb"));
fwrite(output_buffer(), enc_size, 1, fd);
fclose(fd);
++frame_count_enc;
}
#endif
size = fragmenter->Fragment(output_buffer(), enc_size);
} else {
size = enc_size;
_VERIFY(frag_writer()->AppendItem(output_buffer(), enc_size));
}
*fragcount() = frag_writer()->frag_count();
return size;
}