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Don't use nested loops to iterate valid sample rates.

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Eliminates a goto and mirrors the bitrate validation.

Originally committed as revision 25980 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2010-12-14 14:52:25 +00:00
parent 1607db0a95
commit 99ca4f73f0
1 changed files with 8 additions and 8 deletions
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16
libavcodec/ac3enc.c
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@ -1252,7 +1252,7 @@ static av_cold int set_channel_info(AC3EncodeContext *s, int channels,
static av_cold int validate_options(AVCodecContext *avctx, AC3EncodeContext *s)
{
int i, j;
int i;
if (!avctx->channel_layout) {
av_log(avctx, AV_LOG_WARNING, "No channel layout specified. The "
@ -1265,16 +1265,16 @@ static av_cold int validate_options(AVCodecContext *avctx, AC3EncodeContext *s)
}
/* frequency */
for (i = 0; i < 3; i++) {
for (j = 0; j < 3; j++)
if ((ff_ac3_sample_rate_tab[j] >> i) == avctx->sample_rate)
goto found;
for (i = 0; i < 9; i++) {
if ((ff_ac3_sample_rate_tab[i / 3] >> (i % 3)) == avctx->sample_rate)
break;
}
if (i == 9) {
return -1;
found:
}
s->sample_rate = avctx->sample_rate;
s->bit_alloc.sr_shift = i;
s->bit_alloc.sr_code = j;
s->bit_alloc.sr_shift = i % 3;
s->bit_alloc.sr_code = i / 3;
s->bitstream_id = 8 + s->bit_alloc.sr_shift;
s->bitstream_mode = 0; /* complete main audio service */