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Make sure the rdft has enough audio available.

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10l (looks cleaner now)

Originally committed as revision 21645 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-02-05 15:16:38 +00:00
parent ffdf0d48fc
commit 4c7c76456d
1 changed files with 9 additions and 7 deletions
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16
ffplay.c
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@ -782,11 +782,17 @@ static void video_audio_display(VideoState *s)
int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
int ch, channels, h, h2, bgcolor, fgcolor;
int16_t time_diff;
int rdft_bits, nb_freq;
for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
;
nb_freq= 1<<(rdft_bits-1);
/* compute display index : center on currently output samples */
channels = s->audio_st->codec->channels;
nb_display_channels = channels;
if (!s->paused) {
int data_used= s->show_audio==1 ? s->width : (2*nb_freq);
n = 2 * channels;
delay = audio_write_get_buf_size(s);
delay /= n;
@ -798,9 +804,9 @@ static void video_audio_display(VideoState *s)
delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
}
delay -= s->width / 2;
if (delay < s->width)
delay = s->width;
delay -= data_used / 2;
if (delay < data_used)
delay = data_used;
i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
if(s->show_audio==1){
@ -866,16 +872,12 @@ static void video_audio_display(VideoState *s)
}
SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
}else{
int rdft_bits, nb_freq;
nb_display_channels= FFMIN(nb_display_channels, 2);
for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
;
if(rdft_bits != s->rdft_bits){
ff_rdft_end(&s->rdft);
ff_rdft_init(&s->rdft, rdft_bits, RDFT);
s->rdft_bits= rdft_bits;
}
nb_freq= 1<<(rdft_bits-1);
{
FFTSample data[2][2*nb_freq];
for(ch = 0;ch < nb_display_channels; ch++) {