pass bap table to ff_ac3_bit_alloc_calc_bap()
authorJustin Ruggles <justin.ruggles@gmail.com>
Sat, 7 Jun 2008 22:29:54 +0000 (22:29 +0000)
committerJustin Ruggles <justin.ruggles@gmail.com>
Sat, 7 Jun 2008 22:29:54 +0000 (22:29 +0000)
Originally committed as revision 13694 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ac3.c
libavcodec/ac3.h
libavcodec/ac3dec.c
libavcodec/ac3enc.c

index 132ea0f..6b18930 100644 (file)
@@ -173,7 +173,8 @@ void ff_ac3_bit_alloc_calc_mask(AC3BitAllocParameters *s, int16_t *band_psd,
 }
 
 void ff_ac3_bit_alloc_calc_bap(int16_t *mask, int16_t *psd, int start, int end,
-                               int snr_offset, int floor, uint8_t *bap)
+                               int snr_offset, int floor,
+                               const uint8_t *bap_tab, uint8_t *bap)
 {
     int i, j, k, end1, v, address;
 
@@ -190,7 +191,7 @@ void ff_ac3_bit_alloc_calc_bap(int16_t *mask, int16_t *psd, int start, int end,
         end1 = FFMIN(band_start_tab[j] + ff_ac3_critical_band_size_tab[j], end);
         for (k = i; k < end1; k++) {
             address = av_clip((psd[i] - v) >> 5, 0, 63);
-            bap[i] = ff_ac3_bap_tab[address];
+            bap[i] = bap_tab[address];
             i++;
         }
     } while (end > band_start_tab[j++]);
@@ -215,7 +216,8 @@ void ac3_parametric_bit_allocation(AC3BitAllocParameters *s, uint8_t *bap,
                                dba_mode, dba_nsegs, dba_offsets, dba_lengths, dba_values,
                                mask);
 
-    ff_ac3_bit_alloc_calc_bap(mask, psd, start, end, snr_offset, s->floor, bap);
+    ff_ac3_bit_alloc_calc_bap(mask, psd, start, end, snr_offset, s->floor,
+                              ff_ac3_bap_tab, bap);
 }
 
 /**
index abe40a5..2eae0ea 100644 (file)
@@ -168,10 +168,12 @@ void ff_ac3_bit_alloc_calc_mask(AC3BitAllocParameters *s, int16_t *band_psd,
  * @param[in]  end        ending bin location
  * @param[in]  snr_offset SNR adjustment
  * @param[in]  floor      noise floor
+ * @param[in]  bap_tab    look-up table for bit allocation pointers
  * @param[out] bap        bit allocation pointers
  */
 void ff_ac3_bit_alloc_calc_bap(int16_t *mask, int16_t *psd, int start, int end,
-                               int snr_offset, int floor, uint8_t *bap);
+                               int snr_offset, int floor,
+                               const uint8_t *bap_tab, uint8_t *bap);
 
 void ac3_parametric_bit_allocation(AC3BitAllocParameters *s, uint8_t *bap,
                                    int8_t *exp, int start, int end,
index 982dfbc..e7fcd87 100644 (file)
@@ -1047,7 +1047,7 @@ static int ac3_parse_audio_block(AC3DecodeContext *s, int blk)
                                       s->start_freq[ch], s->end_freq[ch],
                                       s->snr_offset[ch],
                                       s->bit_alloc_params.floor,
-                                      s->bap[ch]);
+                                      ff_ac3_bap_tab, s->bap[ch]);
         }
     }
 
index e85d86c..b171055 100644 (file)
@@ -463,7 +463,8 @@ static int bit_alloc(AC3EncodeContext *s,
         for(ch=0;ch<s->nb_all_channels;ch++) {
             ff_ac3_bit_alloc_calc_bap(mask[i][ch], psd[i][ch], 0,
                                       s->nb_coefs[ch], snr_offset,
-                                      s->bit_alloc.floor, bap[i][ch]);
+                                      s->bit_alloc.floor, ff_ac3_bap_tab,
+                                      bap[i][ch]);
             frame_bits += compute_mantissa_size(s, bap[i][ch],
                                                  s->nb_coefs[ch]);
         }