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WMA: store level_table as floats, use type punning for sign flip in decode

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Originally committed as revision 20078 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Måns Rullgård
2009-09-29 10:38:34 +00:00
parent ff00b94e9d
commit 076a9dea1e
4 changed files with 18 additions and 11 deletions
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4
libavcodec/wma.h
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@@ -93,7 +93,7 @@ typedef struct WMACodecContext {
//FIXME the following 3 tables should be shared between decoders
VLC coef_vlc[2];
uint16_t *run_table[2];
uint16_t *level_table[2];
float *level_table[2];
uint16_t *int_table[2];
const CoefVLCTable *coef_vlcs[2];
/* frame info */
@@ -153,7 +153,7 @@ int ff_wma_end(AVCodecContext *avctx);
unsigned int ff_wma_get_large_val(GetBitContext* gb);
int ff_wma_run_level_decode(AVCodecContext* avctx, GetBitContext* gb,
VLC *vlc,
const uint16_t *level_table, const uint16_t *run_table,
const float *level_table, const uint16_t *run_table,
int version, WMACoef *ptr, int offset,
int num_coefs, int block_len, int frame_len_bits,
int coef_nb_bits);