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simplified parse_audio()

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18239 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb 2006-04-24 09:48:57 +00:00
parent 3a406e94d7
commit 538ae3dd8c
1 changed files with 63 additions and 72 deletions
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135
libmpdemux/muxer_mpeg.c
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@ -2046,57 +2046,50 @@ extern int aac_parse_frame(uint8_t *buf, int *srate, int *num);
static int parse_audio(muxer_stream_t *s, int finalize, unsigned int *nf, double *timer, double delay, int drop)
{
int i, j, len, chans, srate, spf, layer, dummy, tot, num, frm_idx;
int finished;
unsigned int frames;
uint64_t idur;
double dur;
muxer_headers_t *spriv = (muxer_headers_t *) s->priv;
i = tot = frames = 0;
switch(s->wf->wFormatTag)
finished = 0;
while(1)
{
len = 0;
switch(s->wf->wFormatTag)
{
case AUDIO_MP2:
case AUDIO_MP3:
{
while(i + 3 < s->b_buffer_len)
{
if(i + 3 >= s->b_buffer_len)
{
finished = 1;
break;
}
if(s->b_buffer[i] == 0xFF && ((s->b_buffer[i+1] & 0xE0) == 0xE0))
{
len = mp_get_mp3_header(&(s->b_buffer[i]), &chans, &srate, &spf, &layer, NULL);
if(len > 0 && (srate == s->wf->nSamplesPerSec) && (i + len <= s->b_buffer_len))
{
dur = (double) spf / (double) srate;
spriv->timer += dur;
if(spriv->drop_delayed_frames && delay < 0 && spriv->timer <= -delay)
{
i += len;
tot = i;
continue;
}
frames++;
fill_last_frame(spriv, &(s->b_buffer[tot]), i - tot);
idur = (27000000ULL * spf) / srate;
frm_idx = add_frame(spriv, idur, &(s->b_buffer[i]), len, 0, spriv->last_pts, spriv->last_pts);
if(frm_idx < 0)
continue;
for(j = frm_idx; j < spriv->framebuf_cnt; j++)
spriv->framebuf[j].pts = spriv->last_pts;
spriv->last_pts += idur;
i += len;
tot = i;
continue;
}
else
len = 0;
}
i++;
}
}
break;
case AUDIO_A52:
{
while(i + 6 < s->b_buffer_len)
{
if(i + 6 >= s->b_buffer_len)
{
finished = 1;
break;
}
if(s->b_buffer[i] == 0x0B && s->b_buffer[i+1] == 0x77)
{
srate = 0;
@ -2108,73 +2101,71 @@ static int parse_audio(muxer_stream_t *s, int finalize, unsigned int *nf, double
if((len > 0) && (srate == s->wf->nSamplesPerSec) && (i + len <= s->b_buffer_len))
{
dur = (double) 1536 / (double) srate;
spriv->timer += dur;
if(spriv->drop_delayed_frames && delay < 0 && spriv->timer <= -delay)
{
i += len;
tot = i;
continue;
}
frames++;
fill_last_frame(spriv, &(s->b_buffer[tot]), i - tot);
idur = (27000000ULL * 1536) / srate;
frm_idx = add_frame(spriv, idur, &(s->b_buffer[i]), len, 0, spriv->last_pts, spriv->last_pts);
if(frm_idx < 0)
continue;
for(j = frm_idx; j < spriv->framebuf_cnt; j++)
spriv->framebuf[j].pts = spriv->last_pts;
spriv->last_pts += idur;
i += len;
tot = i;
continue;
}
else
len = 0;
}
i++;
}
}
break;
case AUDIO_AAC1:
case AUDIO_AAC2:
{
while(i + 7 < s->b_buffer_len)
{
if(i + 7 >= s->b_buffer_len)
{
finished = 1;
break;
}
if(s->b_buffer[i] == 0xFF && ((s->b_buffer[i+1] & 0xF6) == 0xF0))
{
len = aac_parse_frame(&(s->b_buffer[i]), &srate, &num);
if((len > 0) && (srate == s->wf->nSamplesPerSec) && (i + len <= s->b_buffer_len))
{
dur = (double) 1024 / (double) srate;
spriv->timer += dur;
if(spriv->drop_delayed_frames && delay < 0 && spriv->timer <= -delay)
{
i += len;
tot = i;
continue;
}
frames++;
fill_last_frame(spriv, &(s->b_buffer[tot]), i - tot);
idur = (27000000ULL * 1024 * num) / srate;
frm_idx = add_frame(spriv, idur, &(s->b_buffer[i]), len, 0, spriv->last_pts, spriv->last_pts);
if(frm_idx < 0)
continue;
for(j = frm_idx; j < spriv->framebuf_cnt; j++)
spriv->framebuf[j].pts = spriv->last_pts;
spriv->last_pts += idur;
i += len;
tot = i;
continue;
}
else
len = 0;
}
i++;
}
}
if(finished)
break;
if(!len)
{
i++;
continue;
}
spriv->timer += dur;
if(spriv->drop_delayed_frames && delay < 0 && spriv->timer <= -delay)
{
i += len;
tot = i;
continue;
}
frames++;
fill_last_frame(spriv, &(s->b_buffer[tot]), i - tot);
frm_idx = add_frame(spriv, idur, &(s->b_buffer[i]), len, 0, spriv->last_pts, spriv->last_pts);
if(frm_idx < 0)
{
mp_msg(MSGT_MUXER, MSGL_FATAL, "Couldn't add audio frame buffer(frame), abort\n");
goto audio_exit;
}
for(j = frm_idx; j < spriv->framebuf_cnt; j++)
spriv->framebuf[j].pts = spriv->last_pts;
spriv->last_pts += idur;
i += len;
tot = i;
}
audio_exit:
if(tot)
{
memmove(s->b_buffer, &(s->b_buffer[tot]), s->b_buffer_len - tot);