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Code Issues Releases Activity

Remove some duplicated code

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Originally committed as revision 9575 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2007-07-10 13:32:22 +00:00
parent 0d79efeba9
commit a562e2e651
1 changed files with 12 additions and 45 deletions
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57
libavcodec/alac.c
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@ -460,6 +460,10 @@ static int alac_decode_frame(AVCodecContext *avctx,
int channels;
int32_t outputsamples;
int hassize;
int readsamplesize;
int wasted_bytes;
int isnotcompressed;
/* short-circuit null buffers */
if (!inbuffer || !input_buffer_size)
@ -479,24 +483,10 @@ static int alac_decode_frame(AVCodecContext *avctx,
alac->context_initialized = 1;
}
outputsamples = alac->setinfo_max_samples_per_frame;
init_get_bits(&alac->gb, inbuffer, input_buffer_size * 8);
channels = get_bits(&alac->gb, 3);
*outputsize = outputsamples * alac->bytespersample;
switch(channels) {
case 0: { /* 1 channel */
int hassize;
int isnotcompressed;
int readsamplesize;
int wasted_bytes;
int ricemodifier;
/* 2^result = something to do with output waiting.
* perhaps matters if we read > 1 frame in a pass?
*/
@ -514,10 +504,15 @@ static int alac_decode_frame(AVCodecContext *avctx,
/* now read the number of samples,
* as a 32bit integer */
outputsamples = get_bits(&alac->gb, 32);
*outputsize = outputsamples * alac->bytespersample;
}
} else
outputsamples = alac->setinfo_max_samples_per_frame;
readsamplesize = alac->setinfo_sample_size - (wasted_bytes * 8);
*outputsize = outputsamples * alac->bytespersample;
readsamplesize = alac->setinfo_sample_size - (wasted_bytes * 8) + channels;
switch(channels) {
case 0: { /* 1 channel */
int ricemodifier;
if (!isnotcompressed) {
/* so it is compressed */
@ -628,37 +623,9 @@ static int alac_decode_frame(AVCodecContext *avctx,
break;
}
case 1: { /* 2 channels */
int hassize;
int isnotcompressed;
int readsamplesize;
int wasted_bytes;
uint8_t interlacing_shift;
uint8_t interlacing_leftweight;
/* 2^result = something to do with output waiting.
* perhaps matters if we read > 1 frame in a pass?
*/
get_bits(&alac->gb, 4);
get_bits(&alac->gb, 12); /* unknown, skip 12 bits */
hassize = get_bits(&alac->gb, 1); /* the output sample size is stored soon */
wasted_bytes = get_bits(&alac->gb, 2); /* unknown ? */
isnotcompressed = get_bits(&alac->gb, 1); /* whether the frame is compressed */
if (hassize) {
/* now read the number of samples,
* as a 32bit integer */
outputsamples = get_bits(&alac->gb, 32);
*outputsize = outputsamples * alac->bytespersample;
}
readsamplesize = alac->setinfo_sample_size - (wasted_bytes * 8) + 1;
if (!isnotcompressed) {
/* compressed */
int16_t predictor_coef_table_a[32];