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alac: reduce the number of parameters to bastardized_rice_decompress()

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Use the ALACContext fields directly instead.
This commit is contained in:
Justin Ruggles 2012-07-09 10:30:40 -04:00
parent 836e8b9ba0
commit 6e91f62256
1 changed files with 5 additions and 11 deletions
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16
libavcodec/alac.c
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@ -107,13 +107,10 @@ static void bastardized_rice_decompress(ALACContext *alac,
int32_t *output_buffer,
int output_size,
int readsamplesize,
int rice_initial_history,
int rice_limit,
int rice_history_mult,
int rice_kmodifier_mask)
int rice_history_mult)
{
int output_count;
unsigned int history = rice_initial_history;
unsigned int history = alac->rice_initial_history;
int sign_modifier = 0;
for (output_count = 0; output_count < output_size; output_count++) {
@ -126,7 +123,7 @@ static void bastardized_rice_decompress(ALACContext *alac,
/* read k, that is bits as is */
k = av_log2((history >> 9) + 3);
x= decode_scalar(&alac->gb, k, rice_limit, readsamplesize);
x = decode_scalar(&alac->gb, k, alac->rice_limit, readsamplesize);
x_modified = sign_modifier + x;
final_val = (x_modified + 1) / 2;
@ -152,7 +149,7 @@ static void bastardized_rice_decompress(ALACContext *alac,
k = 7 - av_log2(history) + ((history + 16) >> 6 /* / 64 */);
block_size = decode_scalar(&alac->gb, k, rice_limit, 16);
block_size = decode_scalar(&alac->gb, k, alac->rice_limit, 16);
if (block_size > 0) {
if(block_size >= output_size - output_count){
@ -434,10 +431,7 @@ static int alac_decode_frame(AVCodecContext *avctx, void *data,
alac->predict_error_buffer[ch],
outputsamples,
readsamplesize,
alac->rice_initial_history,
alac->rice_limit,
ricemodifier[ch] * alac->rice_history_mult / 4,
(1 << alac->rice_limit) - 1);
ricemodifier[ch] * alac->rice_history_mult / 4);
/* adaptive FIR filter */
if (prediction_type[ch] == 15) {