Fix a typo in the documentation.

[ffmpeg] / libavcodec / dca.c

diff --git a/libavcodec/dca.c b/libavcodec/dca.c
index 86b9c8f6abeaef7ec575a9cd83e51564a500f996..ebdcdd62ae5465a1a41edd94a189df6c42fc384d 100644 (file)
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -32,7 +32,7 @@
 
 #include "avcodec.h"
 #include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
 #include "put_bits.h"
 #include "dcadata.h"
 #include "dcahuff.h"
@@ -230,6 +230,7 @@ typedef struct {
     DECLARE_ALIGNED_16(float, subband_fir_hist[DCA_PRIM_CHANNELS_MAX][512]);
     float subband_fir_noidea[DCA_PRIM_CHANNELS_MAX][32];
     int hist_index[DCA_PRIM_CHANNELS_MAX];
+    DECLARE_ALIGNED_16(float, raXin[32]);
 
     int output;                 ///< type of output
     float add_bias;             ///< output bias
@@ -252,42 +253,64 @@ typedef struct {
     MDCTContext imdct;
 } DCAContext;
 
+static const uint16_t dca_vlc_offs[] = {
+        0,   512,   640,   768,  1282,  1794,  2436,  3080,  3770,  4454,  5364,
+     5372,  5380,  5388,  5392,  5396,  5412,  5420,  5428,  5460,  5492,  5508,
+     5572,  5604,  5668,  5796,  5860,  5892,  6412,  6668,  6796,  7308,  7564,
+     7820,  8076,  8620,  9132,  9388,  9910, 10166, 10680, 11196, 11726, 12240,
+    12752, 13298, 13810, 14326, 14840, 15500, 16022, 16540, 17158, 17678, 18264,
+    18796, 19352, 19926, 20468, 21472, 22398, 23014, 23622,
+};
+
 static av_cold void dca_init_vlcs(void)
 {
     static int vlcs_initialized = 0;
-    int i, j;
+    int i, j, c = 14;
+    static VLC_TYPE dca_table[23622][2];
 
     if (vlcs_initialized)
         return;
 
     dca_bitalloc_index.offset = 1;
     dca_bitalloc_index.wrap = 2;
-    for (i = 0; i < 5; i++)
+    for (i = 0; i < 5; i++) {
+        dca_bitalloc_index.vlc[i].table = &dca_table[dca_vlc_offs[i]];
+        dca_bitalloc_index.vlc[i].table_allocated = dca_vlc_offs[i + 1] - dca_vlc_offs[i];
         init_vlc(&dca_bitalloc_index.vlc[i], bitalloc_12_vlc_bits[i], 12,
                  bitalloc_12_bits[i], 1, 1,
-                 bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_STATIC);
+                 bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+    }
     dca_scalefactor.offset = -64;
     dca_scalefactor.wrap = 2;
-    for (i = 0; i < 5; i++)
+    for (i = 0; i < 5; i++) {
+        dca_scalefactor.vlc[i].table = &dca_table[dca_vlc_offs[i + 5]];
+        dca_scalefactor.vlc[i].table_allocated = dca_vlc_offs[i + 6] - dca_vlc_offs[i + 5];
         init_vlc(&dca_scalefactor.vlc[i], SCALES_VLC_BITS, 129,
                  scales_bits[i], 1, 1,
-                 scales_codes[i], 2, 2, INIT_VLC_USE_STATIC);
+                 scales_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+    }
     dca_tmode.offset = 0;
     dca_tmode.wrap = 1;
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < 4; i++) {
+        dca_tmode.vlc[i].table = &dca_table[dca_vlc_offs[i + 10]];
+        dca_tmode.vlc[i].table_allocated = dca_vlc_offs[i + 11] - dca_vlc_offs[i + 10];
         init_vlc(&dca_tmode.vlc[i], tmode_vlc_bits[i], 4,
                  tmode_bits[i], 1, 1,
-                 tmode_codes[i], 2, 2, INIT_VLC_USE_STATIC);
+                 tmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+    }
 
     for(i = 0; i < 10; i++)
         for(j = 0; j < 7; j++){
             if(!bitalloc_codes[i][j]) break;
             dca_smpl_bitalloc[i+1].offset = bitalloc_offsets[i];
             dca_smpl_bitalloc[i+1].wrap = 1 + (j > 4);
+            dca_smpl_bitalloc[i+1].vlc[j].table = &dca_table[dca_vlc_offs[c]];
+            dca_smpl_bitalloc[i+1].vlc[j].table_allocated = dca_vlc_offs[c + 1] - dca_vlc_offs[c];
             init_vlc(&dca_smpl_bitalloc[i+1].vlc[j], bitalloc_maxbits[i][j],
                      bitalloc_sizes[i],
                      bitalloc_bits[i][j], 1, 1,
-                     bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_STATIC);
+                     bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_NEW_STATIC);
+            c++;
         }
     vlcs_initialized = 1;
 }
@@ -729,7 +752,6 @@ static void qmf_32_subbands(DCAContext * s, int chans,
 {
     const float *prCoeff;
     int i, j;
-    DECLARE_ALIGNED_16(float, raXin[32]);
 
     int hist_index= s->hist_index[chans];
     float *subband_fir_hist2 = s->subband_fir_noidea[chans];
@@ -749,13 +771,13 @@ static void qmf_32_subbands(DCAContext * s, int chans,
         float *subband_fir_hist = s->subband_fir_hist[chans] + hist_index;
         /* Load in one sample from each subband and clear inactive subbands */
         for (i = 0; i < s->subband_activity[chans]; i++){
-            if((i-1)&2) raXin[i] = -samples_in[i][subindex];
-            else        raXin[i] =  samples_in[i][subindex];
+            if((i-1)&2) s->raXin[i] = -samples_in[i][subindex];
+            else        s->raXin[i] =  samples_in[i][subindex];
         }
         for (; i < 32; i++)
-            raXin[i] = 0.0;
+            s->raXin[i] = 0.0;
 
-        ff_imdct_half(&s->imdct, subband_fir_hist, raXin);
+        ff_imdct_half(&s->imdct, subband_fir_hist, s->raXin);
 
         /* Multiply by filter coefficients */
         for (i = 0; i < 16; i++){
@@ -1296,7 +1318,7 @@ static av_cold int dca_decode_init(AVCodecContext * avctx)
     dca_init_vlcs();
 
     dsputil_init(&s->dsp, avctx);
-    ff_mdct_init(&s->imdct, 6, 1);
+    ff_mdct_init(&s->imdct, 6, 1, 1.0);
 
     for(i = 0; i < 6; i++)
         s->samples_chanptr[i] = s->samples + i * 256;