[FFmpeg-soc] [soc]: r4409 - wmapro/wma3dec.c

[faust3]

Author: faust3
Date: Thu Jun 11 09:50:25 2009
New Revision: 4409

Log:
avoid av_log2, calculated value is already present in the extradata

Modified:
   wmapro/wma3dec.c

Modified: wmapro/wma3dec.c
==============================================================================
--- wmapro/wma3dec.c	Thu Jun 11 00:18:26 2009	(r4408)
+++ wmapro/wma3dec.c	Thu Jun 11 09:50:25 2009	(r4409)
@@ -183,6 +183,7 @@ static av_cold int wma_decode_init(AVCod
     int16_t* sfb_offsets;
     unsigned int channel_mask;
     int i;
+    int log2_num_subframes;
 
     s->avctx = avctx;
     dsputil_init(&s->dsp, avctx);
@@ -226,8 +227,9 @@ static av_cold int wma_decode_init(AVCod
         s->channel[i].prev_block_len = s->samples_per_frame;
 
     /** subframe info */
-    s->max_num_subframes = 1 << ((s->decode_flags & 0x38) >> 3);
-    s->num_possible_block_sizes = av_log2(s->max_num_subframes) + 1;
+    log2_num_subframes = ((s->decode_flags & 0x38) >> 3);
+    s->max_num_subframes = 1 << log2_num_subframes;
+    s->num_possible_block_sizes = log2_num_subframes + 1;
     s->min_samples_per_subframe = s->samples_per_frame / s->max_num_subframes;
     s->dynamic_range_compression = (s->decode_flags & 0x80) >> 7;