diff options
Diffstat (limited to 'src/post/visualizations/fftgraph.c')
| -rw-r--r-- | src/post/visualizations/fftgraph.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/src/post/visualizations/fftgraph.c b/src/post/visualizations/fftgraph.c index f9f8f0d4a..669a4bc94 100644 --- a/src/post/visualizations/fftgraph.c +++ b/src/post/visualizations/fftgraph.c @@ -20,7 +20,7 @@ * FftGraph Visualization Post Plugin For xine * by Thibaut Mattern (tmattern@noos.fr) * - * $Id: fftgraph.c,v 1.14 2006/01/27 07:46:14 tmattern Exp $ + * $Id: fftgraph.c,v 1.15 2006/12/02 22:35:18 miguelfreitas Exp $ * */ @@ -230,6 +230,7 @@ static int fftgraph_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream this->lines_per_channel = FFTGRAPH_HEIGHT / this->channels; this->samples_per_frame = rate / FPS; this->data_idx = 0; + this->sample_counter = 0; this->vo_port->open(this->vo_port, XINE_ANON_STREAM); this->metronom->set_master(this->metronom, stream->metronom); @@ -342,7 +343,7 @@ static void fftgraph_port_put_buffer (xine_audio_port_t *port_gen, data8 += samples_used * this->channels; /* scale 8 bit data to 16 bits and convert to signed as well */ - for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES; + for( i = samples_used; i < buf->num_frames && this->data_idx < NUMSAMPLES; i++, this->data_idx++, data8 += this->channels ) { for( c = 0; c < this->channels; c++){ this->wave[c][this->data_idx].re = (double)(data8[c] << 8) - 0x8000; @@ -353,7 +354,7 @@ static void fftgraph_port_put_buffer (xine_audio_port_t *port_gen, data = buf->mem; data += samples_used * this->channels; - for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES; + for( i = samples_used; i < buf->num_frames && this->data_idx < NUMSAMPLES; i++, this->data_idx++, data += this->channels ) { for( c = 0; c < this->channels; c++){ this->wave[c][this->data_idx].re = (double)data[c]; @@ -362,17 +363,24 @@ static void fftgraph_port_put_buffer (xine_audio_port_t *port_gen, } } - if( this->sample_counter >= this->samples_per_frame && - this->data_idx == NUMSAMPLES ) { + if( this->sample_counter >= this->samples_per_frame ) { - this->data_idx = 0; samples_used += this->samples_per_frame; frame = this->vo_port->get_frame (this->vo_port, FFTGRAPH_WIDTH, FFTGRAPH_HEIGHT, this->ratio, XINE_IMGFMT_YUY2, VO_BOTH_FIELDS); frame->extra_info->invalid = 1; - frame->bad_frame = 0; + + /* frame is marked as bad if we don't have enough samples for + * updating the viz plugin (calculations may be skipped). + * we must keep the framerate though. */ + if( this->data_idx == NUMSAMPLES ) { + frame->bad_frame = 0; + this->data_idx = 0; + } else { + frame->bad_frame = 1; + } frame->duration = 90000 * this->samples_per_frame / port->rate; frame->pts = pts; this->metronom->got_video_frame(this->metronom, frame); |