h264: add profile names for the existing defines

[ffmpeg] / libavcodec / ac3enc.c

diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index a9552568c4d2d83adb6c998244ba2055cd6c4ac7..ed7a171ac7e9a5ab5668e09e955190310023f113 100644 (file)
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -161,7 +161,7 @@ static av_cold int mdct_init(AVCodecContext *avctx, AC3MDCTContext *mdct,
 
 static void mdct512(AC3MDCTContext *mdct, CoefType *out, SampleType *in);
 
-static void apply_window(SampleType *output, const SampleType *input,
+static void apply_window(DSPContext *dsp, SampleType *output, const SampleType *input,
                          const SampleType *window, int n);
 
 static int normalize_samples(AC3EncodeContext *s);
@@ -262,7 +262,7 @@ static void apply_mdct(AC3EncodeContext *s)
             AC3Block *block = &s->blocks[blk];
             const SampleType *input_samples = &s->planar_samples[ch][blk * AC3_BLOCK_SIZE];
 
-            apply_window(s->windowed_samples, input_samples, s->mdct.window, AC3_WINDOW_SIZE);
+            apply_window(&s->dsp, s->windowed_samples, input_samples, s->mdct.window, AC3_WINDOW_SIZE);
 
             block->exp_shift[ch] = normalize_samples(s);
 
@@ -441,7 +441,7 @@ static void extract_exponents(AC3EncodeContext *s)
  * Calculate exponent strategies for all blocks in a single channel.
  */
 static void compute_exp_strategy_ch(AC3EncodeContext *s, uint8_t *exp_strategy,
-                                    uint8_t **exp)
+                                    uint8_t *exp)
 {
     int blk, blk1;
     int exp_diff;
@@ -449,12 +449,14 @@ static void compute_exp_strategy_ch(AC3EncodeContext *s, uint8_t *exp_strategy,
     /* estimate if the exponent variation & decide if they should be
        reused in the next frame */
     exp_strategy[0] = EXP_NEW;
+    exp += AC3_MAX_COEFS;
     for (blk = 1; blk < AC3_MAX_BLOCKS; blk++) {
-        exp_diff = s->dsp.sad[0](NULL, exp[blk], exp[blk-1], 16, 16);
+        exp_diff = s->dsp.sad[0](NULL, exp, exp - AC3_MAX_COEFS, 16, 16);
         if (exp_diff > EXP_DIFF_THRESHOLD)
             exp_strategy[blk] = EXP_NEW;
         else
             exp_strategy[blk] = EXP_REUSE;
+        exp += AC3_MAX_COEFS;
     }
     emms_c();
 
@@ -482,20 +484,10 @@ static void compute_exp_strategy_ch(AC3EncodeContext *s, uint8_t *exp_strategy,
  */
 static void compute_exp_strategy(AC3EncodeContext *s)
 {
-    uint8_t *exp1[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS];
-    uint8_t exp_str1[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS];
     int ch, blk;
 
     for (ch = 0; ch < s->fbw_channels; ch++) {
-        for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
-            exp1[ch][blk]     = s->blocks[blk].exp[ch];
-            exp_str1[ch][blk] = s->exp_strategy[ch][blk];
-        }
-
-        compute_exp_strategy_ch(s, exp_str1[ch], exp1[ch]);
-
-        for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
-            s->exp_strategy[ch][blk] = exp_str1[ch][blk];
+        compute_exp_strategy_ch(s, s->exp_strategy[ch], s->blocks[0].exp[ch]);
     }
     if (s->lfe_on) {
         ch = s->lfe_channel;
@@ -508,15 +500,25 @@ static void compute_exp_strategy(AC3EncodeContext *s)
 
 /**
  * Set each encoded exponent in a block to the minimum of itself and the
- * exponent in the same frequency bin of a following block.
- * exp[i] = min(exp[i], exp1[i]
+ * exponents in the same frequency bin of up to 5 following blocks.
  */
-static void exponent_min(uint8_t *exp, uint8_t *exp1, int n)
+static void exponent_min(uint8_t *exp, int num_reuse_blocks, int nb_coefs)
 {
-    int i;
-    for (i = 0; i < n; i++) {
-        if (exp1[i] < exp[i])
-            exp[i] = exp1[i];
+    int blk, i;
+
+    if (!num_reuse_blocks)
+        return;
+
+    for (i = 0; i < nb_coefs; i++) {
+        uint8_t min_exp = *exp;
+        uint8_t *exp1 = exp + AC3_MAX_COEFS;
+        for (blk = 0; blk < num_reuse_blocks; blk++) {
+            uint8_t next_exp = *exp1;
+            if (next_exp < min_exp)
+                min_exp = next_exp;
+            exp1 += AC3_MAX_COEFS;
+        }
+        *exp++ = min_exp;
     }
 }
 
@@ -595,31 +597,38 @@ static void encode_exponents_blk_ch(uint8_t *exp, int nb_exps, int exp_strategy)
  */
 static void encode_exponents(AC3EncodeContext *s)
 {
-    int blk, blk1, blk2, ch;
-    AC3Block *block, *block1, *block2;
+    int blk, blk1, ch;
+    uint8_t *exp, *exp1, *exp_strategy;
+    int nb_coefs, num_reuse_blocks;
 
     for (ch = 0; ch < s->channels; ch++) {
+        exp          = s->blocks[0].exp[ch];
+        exp_strategy = s->exp_strategy[ch];
+        nb_coefs     = s->nb_coefs[ch];
+
         blk = 0;
-        block = &s->blocks[0];
         while (blk < AC3_MAX_BLOCKS) {
             blk1 = blk + 1;
-            block1 = block + 1;
-            /* for the EXP_REUSE case we select the min of the exponents */
-            while (blk1 < AC3_MAX_BLOCKS && s->exp_strategy[ch][blk1] == EXP_REUSE) {
-                exponent_min(block->exp[ch], block1->exp[ch], s->nb_coefs[ch]);
+
+            /* count the number of EXP_REUSE blocks after the current block */
+            while (blk1 < AC3_MAX_BLOCKS && exp_strategy[blk1] == EXP_REUSE)
                 blk1++;
-                block1++;
-            }
-            encode_exponents_blk_ch(block->exp[ch], s->nb_coefs[ch],
-                                    s->exp_strategy[ch][blk]);
+            num_reuse_blocks = blk1 - blk - 1;
+
+            /* for the EXP_REUSE case we select the min of the exponents */
+            exponent_min(exp, num_reuse_blocks, nb_coefs);
+
+            encode_exponents_blk_ch(exp, nb_coefs, exp_strategy[blk]);
+
             /* copy encoded exponents for reuse case */
-            block2 = block + 1;
-            for (blk2 = blk+1; blk2 < blk1; blk2++, block2++) {
-                memcpy(block2->exp[ch], block->exp[ch],
-                       s->nb_coefs[ch] * sizeof(uint8_t));
+            exp1 = exp + AC3_MAX_COEFS;
+            while (blk < blk1-1) {
+                memcpy(exp1, exp, nb_coefs * sizeof(*exp));
+                exp1 += AC3_MAX_COEFS;
+                blk++;
             }
             blk = blk1;
-            block = block1;
+            exp = exp1;
         }
     }
 }
@@ -1806,7 +1815,7 @@ static av_cold int ac3_encode_init(AVCodecContext *avctx)
 
     avctx->frame_size = AC3_FRAME_SIZE;
 
-    ac3_common_init();
+    ff_ac3_common_init();
 
     ret = validate_options(avctx, s);
     if (ret)