removing unused encoding code

Originally committed as revision 3133 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/svq1.c

@@ -85,8 +85,6 @@ typedef struct SVQ1Context {
     int c_block_width;
     int c_block_height;
     
-    unsigned char *c_plane;
-    
     uint16_t *mb_type;
     uint32_t *dummy;
     int16_t (*motion_val8[3])[2];
@@ -914,419 +912,10 @@ static void svq1_write_header(SVQ1Context *s, int frame_type)
     put_bits(&s->pb, 2, 0);
 }
 
-int level_sizes[6] =      { 8, 16, 32, 64, 128, 256 };
-int level_log2_sizes[6] = { 3,  4,  5,  6,   7,   8 };
-
-#define IABS(x) ((x < 0) ? (-(x)) : x)
-
-
-
-//#define USE_MAD_ALGORITHM
-
-#ifdef USE_MAD_ALGORITHM
 
 #define QUALITY_THRESHOLD 100
 #define THRESHOLD_MULTIPLIER 0.6
 
-/* This function calculates vector differences using mean absolute 
- * difference (MAD). */
-
-static int encode_vector(SVQ1Context *s, unsigned char *vector, 
-    unsigned int level, int threshold)
-{
-    int i, j, k;
-    int mean;
-    signed short work_vector[256];
-    int best_codebook;
-    int best_score;
-    int multistage_codebooks[6];
-    int number_of_stages = 0;
-    int8_t *current_codebook;
-    int total_deviation;
-    int ret;
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  ** recursive entry point: encoding level %d vector at threshold %d\n",
-  level, threshold);
-#endif
-    if (level > 5) {
-        av_log(s->avctx, AV_LOG_INFO, " help! level %d > 5\n", level);
-        return 0;
-    }
-
-#ifdef DEBUG_SVQ1
-for (i = 0; i < level_sizes[level]; i++)
-  av_log(s->avctx, AV_LOG_INFO, " %02X", vector[i]);
-av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-    /* calculate the mean */
-    mean = 0;
-    for (i = 0; i < level_sizes[level]; i++)
-        mean += vector[i];
-    mean >>= level_log2_sizes[level];
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " vector mean = 0x%02X\n", mean);
-#endif
-
-    /* remove the mean from the vector */
-    total_deviation = 0;
-    for (i = 0; i < level_sizes[level]; i++) {
-        work_vector[i] = (signed short)vector[i] - mean;
-        total_deviation += IABS(work_vector[i]);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " %d", work_vector[i]);
-#endif
-    }
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "\n  total deviation = %d\n", total_deviation);
-#endif
-
-    if (total_deviation < threshold) {
-
-#ifdef DEBUG_SVQ1
-    av_log(s->avctx, AV_LOG_INFO, " mean-only encoding found for level %d vector, mean = %d\n",
-      level, mean);
-#endif
-
-        /* indicate that this is the end of the subdivisions */
-        if (level > 0)
-            put_bits(&s->pb, 1, 0);
-
-        /* index 1 in the table indicates mean-only encoding */
-        put_bits(&s->pb, svq1_intra_multistage_vlc[level][1][1],
-            svq1_intra_multistage_vlc[level][1][0]);
-        put_bits(&s->pb, svq1_intra_mean_vlc[mean][1],
-            svq1_intra_mean_vlc[mean][0]);
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  mean-only L%d, VLC = (0x%X, %d), mean = %d (0x%X, %d)\n", 
-  level,
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][0],
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-  mean,
-  svq1_intra_mean_vlc[mean][0],
-  svq1_intra_mean_vlc[mean][1]);
-#endif
-
-        ret = 0;
-
-    } else {
-
-        if (level <= 3) {
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " multistage VQ search...\n");
-#endif
-            /* conduct multistage VQ search, for each stage... */
-            for (i = 0; i < 6; i++) {
-
-                best_codebook = 0;
-                best_score = 0x7FFFFFFF;
-                /* for each codebook in stage */
-                for (j = 0; j < 16; j++) {
-
-                    total_deviation = 0;
-                    current_codebook =
-                        &svq1_intra_codebooks[level]
-                        [i * level_sizes[level] * 16 + j * level_sizes[level]];
-                    /* calculate the total deviation for the vector */
-                    for (k = 0; k < level_sizes[level]; k++) {
-                        total_deviation += 
-                            IABS(work_vector[k] - current_codebook[k]);
-                    }
-
-                    /* lowest score so far? */
-                    if (total_deviation < best_score) {
-                        best_score = total_deviation;
-                        best_codebook = j;
-                    }
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  after %d, %d, best codebook is %d with a score of %d (score was %d)\n",
-  i, j, best_codebook, best_score, total_deviation);
-#endif
-                }
-
-                /* apply the winning codebook to the work vector and check if
-                 * the vector meets the quality threshold */
-                total_deviation = 0;
-                current_codebook =
-                    &svq1_intra_codebooks[level]
-                    [i * level_sizes[level] * 16 + j * level_sizes[level]];
-                multistage_codebooks[number_of_stages++] = best_codebook;
-                for (j = 0; j < level_sizes[level]; j++) {
-                    work_vector[j] = work_vector[j] - current_codebook[j];
-                    total_deviation += IABS(work_vector[j]);
-                }
-
-                /* do not go forward with the rest of the search if an acceptable
-                 * codebook combination has been found */
-                if (total_deviation < threshold)
-                    break;
-            }
-        }
-
-        if ((total_deviation < threshold) || (level == 0)) {
-#ifdef DEBUG_SVQ1
-      av_log(s->avctx, AV_LOG_INFO, " level %d VQ encoding found using mean %d and codebooks", level, mean);
-      for (i = 0; i < number_of_stages; i++)
-        av_log(s->avctx, AV_LOG_INFO, " %d", multistage_codebooks[i]);
-      av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-            /* indicate that this is the end of the subdivisions */
-            if (level > 0)
-                put_bits(&s->pb, 1, 0);
-
-            /* output the encoding */
-            put_bits(&s->pb, 
-                svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-                svq1_intra_multistage_vlc[level][1 + number_of_stages][0]);
-            put_bits(&s->pb, svq1_intra_mean_vlc[mean][1],
-                svq1_intra_mean_vlc[mean][0]);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  L%d: multistage = %d (0x%X, %d), mean = %d (0x%X, %d), codebooks = ", 
-  level,
-  number_of_stages,
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][0],
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-  mean,
-  svq1_intra_mean_vlc[mean][0],
-  svq1_intra_mean_vlc[mean][1]);
-#endif
-
-            for (i = 0; i < number_of_stages; i++)
-{
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "%d ", multistage_codebooks[i]);
-#endif
-                put_bits(&s->pb, 4, multistage_codebooks[i]);
-}
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-            ret = 0;
-
-        } else {
-
-            /* output a subdivision bit to the encoded stream and signal to 
-             * the calling function that this vector could not be
-             * coded at the requested threshold and needs to be subdivided */
-            put_bits(&s->pb, 1, 1);
-            ret = 1;
-        }
-    }
-
-    return ret;
-}
-
-#else
-
-#define QUALITY_THRESHOLD 100
-#define THRESHOLD_MULTIPLIER 0.6
-
-/* This function calculates vector differences using mean square 
- * error (MSE). */
-
-static int encode_vector(SVQ1Context *s, unsigned char *vector, 
-    unsigned int level, int threshold)
-{
-    int i, j, k;
-    int mean;
-    signed short work_vector[256];
-    int best_codebook;
-    int best_score;
-    int multistage_codebooks[6];
-    int number_of_stages = 0;
-    int8_t *current_codebook;
-    int mse;
-    int diff;
-    int ret;
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  ** recursive entry point: encoding level %d vector at threshold %d\n",
-  level, threshold);
-#endif
-    if (level > 5) {
-        av_log(s->avctx, AV_LOG_INFO, " help! level %d > 5\n", level);
-        return 0;
-    }
-
-#ifdef DEBUG_SVQ1
-for (i = 0; i < level_sizes[level]; i++)
-  av_log(s->avctx, AV_LOG_INFO, " %02X", vector[i]);
-av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-    /* calculate the mean */
-    mean = 0;
-    for (i = 0; i < level_sizes[level]; i++)
-        mean += vector[i];
-    mean >>= level_log2_sizes[level];
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " vector mean = 0x%02X\n", mean);
-#endif
-
-    /* remove the mean from the vector and compute the resulting MSE */
-    mse = 0;
-    for (i = 0; i < level_sizes[level]; i++) {
-        work_vector[i] = (signed short)vector[i] - mean;
-        mse += (work_vector[i] * work_vector[i]);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " %d", work_vector[i]);
-#endif
-    }
-    mse >>= level_log2_sizes[level];
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "\n  MSE = %d\n", mse);
-#endif
-
-    if (mse < threshold) {
-
-#ifdef DEBUG_SVQ1
-    av_log(s->avctx, AV_LOG_INFO, " mean-only encoding found for level %d vector, mean = %d\n",
-      level, mean);
-#endif
-
-        /* indicate that this is the end of the subdivisions */
-        if (level > 0)
-            put_bits(&s->pb, 1, 0);
-
-        /* index 1 in the table indicates mean-only encoding */
-        put_bits(&s->pb, svq1_intra_multistage_vlc[level][1][1],
-            svq1_intra_multistage_vlc[level][1][0]);
-        put_bits(&s->pb, svq1_intra_mean_vlc[mean][1],
-            svq1_intra_mean_vlc[mean][0]);
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  mean-only L%d, VLC = (0x%X, %d), mean = %d (0x%X, %d)\n", 
-  level,
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][0],
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-  mean,
-  svq1_intra_mean_vlc[mean][0],
-  svq1_intra_mean_vlc[mean][1]);
-#endif
-
-        ret = 0;
-
-    } else {
-
-        if (level <= 3) {
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, " multistage VQ search...\n");
-#endif
-            /* conduct multistage VQ search, for each stage... */
-            for (i = 0; i < 6; i++) {
-
-                best_codebook = 0;
-                best_score = 0x7FFFFFFF;
-                /* for each codebook in stage */
-                for (j = 0; j < 16; j++) {
-
-                    mse = 0;
-                    current_codebook =
-                        &svq1_intra_codebooks[level]
-                        [i * level_sizes[level] * 16 + j * level_sizes[level]];
-                    /* calculate the MSE for this vector */
-                    for (k = 0; k < level_sizes[level]; k++) {
-                        diff = work_vector[k] - current_codebook[k];
-                        mse += (diff * diff);
-                    }
-                    mse >>= level_log2_sizes[level];
-
-                    /* lowest score so far? */
-                    if (mse < best_score) {
-                        best_score = mse;
-                        best_codebook = j;
-                    }
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  after %d, %d, best codebook is %d with a score of %d (score was %d)\n",
-  i, j, best_codebook, best_score, mse);
-#endif
-                }
-
-                /* apply the winning codebook to the work vector and check if
-                 * the vector meets the quality threshold */
-                mse = 0;
-                current_codebook =
-                    &svq1_intra_codebooks[level]
-                    [i * level_sizes[level] * 16 + j * level_sizes[level]];
-                multistage_codebooks[number_of_stages++] = best_codebook;
-                for (j = 0; j < level_sizes[level]; j++) {
-                    work_vector[j] = work_vector[j] - current_codebook[j];
-                    mse += (work_vector[j] * work_vector[j]);
-                }
-                mse >>= level_log2_sizes[level];
-
-                /* do not go forward with the rest of the search if an acceptable
-                 * codebook combination has been found */
-                if (mse < threshold)
-                    break;
-            }
-        }
-
-        if ((mse < threshold) || (level == 0)) {
-#ifdef DEBUG_SVQ1
-      av_log(s->avctx, AV_LOG_INFO, " level %d VQ encoding found using mean %d and codebooks", level, mean);
-      for (i = 0; i < number_of_stages; i++)
-        av_log(s->avctx, AV_LOG_INFO, " %d", multistage_codebooks[i]);
-      av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-            /* indicate that this is the end of the subdivisions */
-            if (level > 0)
-                put_bits(&s->pb, 1, 0);
-
-            /* output the encoding */
-            put_bits(&s->pb, 
-                svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-                svq1_intra_multistage_vlc[level][1 + number_of_stages][0]);
-            put_bits(&s->pb, svq1_intra_mean_vlc[mean][1],
-                svq1_intra_mean_vlc[mean][0]);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  L%d: multistage = %d (0x%X, %d), mean = %d (0x%X, %d), codebooks = ", 
-  level,
-  number_of_stages,
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][0],
-  svq1_intra_multistage_vlc[level][1 + number_of_stages][1],
-  mean,
-  svq1_intra_mean_vlc[mean][0],
-  svq1_intra_mean_vlc[mean][1]);
-#endif
-
-            for (i = 0; i < number_of_stages; i++)
-{
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "%d ", multistage_codebooks[i]);
-#endif
-                put_bits(&s->pb, 4, multistage_codebooks[i]);
-}
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "\n");
-#endif
-
-            ret = 0;
-
-        } else {
-
-            /* output a subdivision bit to the encoded stream and signal to 
-             * the calling function that this vector could not be
-             * coded at the requested threshold and needs to be subdivided */
-            put_bits(&s->pb, 1, 1);
-            ret = 1;
-        }
-    }
-
-    return ret;
-}
-#endif
 
 static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra){
     int count, y, x, i, j, split, best_mean, best_score, best_count;
@@ -1480,27 +1069,13 @@ static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref, uint8_t *dec
 static void svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane,
     int width, int height, int src_stride, int stride)
 {
-    unsigned char buffer0[256];
-    unsigned char buffer1[256];
-    int current_buffer;
-    unsigned char *vector;
-    unsigned char *subvectors;
-    int vector_count;
-    int subvector_count;
     int x, y;
-    int i, j;
+    int i;
     int block_width, block_height;
-    int left_edge;
     int level;
     int threshold[6];
     const int lambda= (s->picture.quality*s->picture.quality) >> (2*FF_LAMBDA_SHIFT);
 
-static int frame = 0;
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "********* frame #%d\n", frame++);
-#endif
-
     /* figure out the acceptable level thresholds in advance */
     threshold[5] = QUALITY_THRESHOLD;
     for (level = 4; level >= 0; level--)
@@ -1537,9 +1112,9 @@ av_log(s->avctx, AV_LOG_INFO, "********* frame #%d\n", frame++);
         s->m.mb_type= s->mb_type;
         
         //dummies, to avoid segfaults
-        s->m.current_picture.mb_mean= s->dummy;
+        s->m.current_picture.mb_mean=   (uint8_t *)s->dummy;
-        s->m.current_picture.mb_var= s->dummy;
+        s->m.current_picture.mb_var=    (uint16_t*)s->dummy;
-        s->m.current_picture.mc_mb_var= s->dummy;
+        s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
         s->m.current_picture.mb_type= s->dummy;
         
         s->m.current_picture.motion_val[0]= s->motion_val8[plane];
@@ -1602,9 +1177,6 @@ av_log(s->avctx, AV_LOG_INFO, "********* frame #%d\n", frame++);
             s->m.mb_x= x;
             ff_init_block_index(&s->m);
             ff_update_block_index(&s->m);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "* level 5 vector @ %d, %d:\n", x * 16, y * 16);
-#endif
             
             if(s->picture.pict_type == I_TYPE || (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTRA)){
                 for(i=0; i<6; i++){
@@ -1690,125 +1262,14 @@ av_log(s->avctx, AV_LOG_INFO, "* level 5 vector @ %d, %d:\n", x * 16, y * 16);
             if(best==0){
                 s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
             }
-            
-#if 0
-            for (i = 0; i < 256; i += 16) {
-                memcpy(&buffer0[i], &plane[left_edge], 16);
-                left_edge += stride;
-            }
-            current_buffer = 1;  /* this will toggle to 0 immediately */
-
-            /* perform a breadth-first tree encoding for each vector level */
-            subvector_count = 1;  /* one subvector at level 5 */
-            for (level = 5; level >= 0; level--) {
-
-                vector_count = subvector_count;
-                subvector_count = 0;
-
-                if (current_buffer == 0) {
-                    current_buffer = 1;
-                    vector = buffer1;
-                    subvectors = buffer0;
-                } else {
-                    current_buffer = 0;
-                    vector = buffer0;
-                    subvectors = buffer1;
-                }
-
-                /* iterate through each vector in the list */
-                for (i = 0; i < vector_count; i++) {
-
-                    if (encode_vector(s, vector, level, threshold[level])) {
-
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  split to level %d\n", level - 1);
-#endif
-                        /* subdivide into 2 subvectors for later processing */
-                        subvector_count += 2;
-
-                        if (level - 1 == 3) {
-                            /* subdivide 16x8 -> 2 8x8 */
-                            for (j = 0; j < 8; j++) {
-                                /* left half */
-                                memcpy(subvectors + j * 8, vector + j * 16, 8);
-                                /* right half */
-                                memcpy(subvectors + 64 + j * 8,
-                                    vector + 8 + j * 16, 8);
-                            }
-                            subvectors += 128;
-                        } else if (level - 1 == 1) {
-                            /* subdivide 8x4 -> 2 4x4 */
-                            for (j = 0; j < 4; j++) {
-                                /* left half */
-                                memcpy(subvectors + j * 4, vector + j * 8, 4);
-                                /* right half */
-                                memcpy(subvectors + 16 + j * 4,
-                                    vector + 4 + j * 8, 4);
-                            }
-                            subvectors += 32;
-                        } else {
-                            /* first half */
-                            memcpy(subvectors, vector, level_sizes[level - 1]);
-                            subvectors += level_sizes[level - 1];
-                            /* second half */
-                            memcpy(subvectors, vector + level_sizes[level - 1], 
-                                level_sizes[level - 1]);
-                            subvectors += level_sizes[level - 1];
-                        }
-                    }
- 
-                    vector += level_sizes[level];
-                }
-
-                /* if there are no more subvectors, break early */
-                if (!subvector_count)
-                    break;
-            }
-#endif
         }
         s->m.first_slice_line=0;
     }
 }
 
-/* output a plane with a constant mean value; good for debugging and for
- * greyscale encoding but only valid for intra frames */
-static void svq1_output_intra_constant_mean(SVQ1Context *s, int block_width, 
-    int block_height, unsigned char mean)
-{
-    int i;
-
-    /* for each level 5 vector, output the specified mean value */
-    for (i = 0; i < block_width * block_height; i++) {
-
-        /* output a 0 before each vector indicating no subdivision */
-        put_bits(&s->pb, 1, 0);
-
-        /* output a 0 indicating mean-only encoding; use index 1 as that
-         * maps to code 0 */
-        put_bits(&s->pb, svq1_intra_multistage_vlc[5][1][1],
-            svq1_intra_multistage_vlc[5][1][0]);
-
-        /* output a constant mean */
-        put_bits(&s->pb, svq1_intra_mean_vlc[mean][1],
-            svq1_intra_mean_vlc[mean][0]);
-#ifdef DEBUG_SVQ1
-av_log(s->avctx, AV_LOG_INFO, "  const L5 %d/%d: multistage = 0 (0x%X, %d), mean = %d (0x%X, %d)\n", 
-  i, block_width * block_height,
-  svq1_intra_multistage_vlc[5][1][0],
-  svq1_intra_multistage_vlc[5][1][1],
-  mean,
-  svq1_intra_mean_vlc[mean][0],
-  svq1_intra_mean_vlc[mean][1]);
-#endif
-    }
-}
-
 static int svq1_encode_init(AVCodecContext *avctx)
 {
     SVQ1Context * const s = avctx->priv_data;
-    int i;
-    unsigned char least_bits_value = 0;
-    int least_bits;
 
     dsputil_init(&s->dsp, avctx);
     avctx->coded_frame= (AVFrame*)&s->picture;
@@ -1835,22 +1296,6 @@ av_log(s->avctx, AV_LOG_INFO, " Hey: %d x %d, %d x %d, %d x %d\n",
   s->y_block_width, s->y_block_height,
   s->c_block_width, s->c_block_height);
 
-    /* allocate a plane for the U & V planes (color, or C, planes) and
-     * initialize them to the value that is represented by the fewest bits
-     * in the mean table; the reasoning behind this is that when the border
-     * vectors are operated upon and possibly subdivided, the mean will be
-     * removed resulting in a perfect deviation score of 0 and encoded with
-     * the minimal possible bits */
-    s->c_plane = av_malloc(s->c_block_width * s->c_block_height * 16 * 16);
-    least_bits = 10000;
-    for (i = 0; i < 256; i++)
-        if (svq1_intra_mean_vlc[i][1] < least_bits) {
-            least_bits = svq1_intra_mean_vlc[i][1];
-            least_bits_value = i;
-        }
-    memset(s->c_plane, least_bits_value, 
-        s->c_block_width * s->c_block_height * 16 * 16);
-
     return 0;
 }
 
@@ -1907,7 +1352,6 @@ static int svq1_encode_end(AVCodecContext *avctx)
 
     av_log(avctx, AV_LOG_DEBUG, "RD: %f\n", s->rd_total/(double)(avctx->width*avctx->height*avctx->frame_number));
     
-    av_freep(&s->c_plane);
     av_freep(&s->m.me.scratchpad);     
     av_freep(&s->m.me.map);
     av_freep(&s->m.me.score_map);