]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/h264_cavlc.c
dv: Mark internal frame reference as const
[ffmpeg] / libavcodec / h264_cavlc.c
index 50094b37e79728e6f4a9c3ddf95eb7cc8f28df37..7445788e5633e63df253b50e620915925ba35201 100644 (file)
@@ -283,7 +283,7 @@ static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];
  * Get the predicted number of non-zero coefficients.
  * @param n block index
  */
-static inline int pred_non_zero_count(H264Context *h, H264SliceContext *sl, int n)
+static inline int pred_non_zero_count(const H264Context *h, H264SliceContext *sl, int n)
 {
     const int index8= scan8[n];
     const int left = sl->non_zero_count_cache[index8 - 1];
@@ -292,7 +292,7 @@ static inline int pred_non_zero_count(H264Context *h, H264SliceContext *sl, int
 
     if(i<64) i= (i+1)>>1;
 
-    tprintf(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
+    ff_tlog(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
 
     return i&31;
 }
@@ -442,7 +442,7 @@ static inline int get_level_prefix(GetBitContext *gb){
  * @param max_coeff number of coefficients in the block
  * @return <0 if an error occurred
  */
-static int decode_residual(H264Context *h, H264SliceContext *sl,
+static int decode_residual(const H264Context *h, H264SliceContext *sl,
                            GetBitContext *gb, int16_t *block, int n,
                            const uint8_t *scantable, const uint32_t *qmul,
                            int max_coeff)
@@ -477,12 +477,12 @@ static int decode_residual(H264Context *h, H264SliceContext *sl,
     if(total_coeff==0)
         return 0;
     if(total_coeff > (unsigned)max_coeff) {
-        av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", h->mb_x, h->mb_y, total_coeff);
+        av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", sl->mb_x, sl->mb_y, total_coeff);
         return -1;
     }
 
     trailing_ones= coeff_token&3;
-    tprintf(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
+    ff_tlog(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
     assert(total_coeff<=16);
 
     i = show_bits(gb, 3);
@@ -615,7 +615,7 @@ static int decode_residual(H264Context *h, H264SliceContext *sl,
 
     if (zeros_left < 0) {
         av_log(h->avctx, AV_LOG_ERROR,
-               "negative number of zero coeffs at %d %d\n", h->mb_x, h->mb_y);
+               "negative number of zero coeffs at %d %d\n", sl->mb_x, sl->mb_y);
         return AVERROR_INVALIDDATA;
     }
 
@@ -628,15 +628,20 @@ static int decode_residual(H264Context *h, H264SliceContext *sl,
     return 0;
 }
 
-static av_always_inline int decode_luma_residual(H264Context *h, H264SliceContext *sl, GetBitContext *gb, const uint8_t *scan, const uint8_t *scan8x8, int pixel_shift, int mb_type, int cbp, int p){
+static av_always_inline
+int decode_luma_residual(const H264Context *h, H264SliceContext *sl,
+                         GetBitContext *gb, const uint8_t *scan,
+                         const uint8_t *scan8x8, int pixel_shift,
+                         int mb_type, int cbp, int p)
+{
     int i4x4, i8x8;
     int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
     if(IS_INTRA16x16(mb_type)){
-        AV_ZERO128(h->mb_luma_dc[p]+0);
-        AV_ZERO128(h->mb_luma_dc[p]+8);
-        AV_ZERO128(h->mb_luma_dc[p]+16);
-        AV_ZERO128(h->mb_luma_dc[p]+24);
-        if( decode_residual(h, sl, h->intra_gb_ptr, h->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX+p, scan, NULL, 16) < 0){
+        AV_ZERO128(sl->mb_luma_dc[p]+0);
+        AV_ZERO128(sl->mb_luma_dc[p]+8);
+        AV_ZERO128(sl->mb_luma_dc[p]+16);
+        AV_ZERO128(sl->mb_luma_dc[p]+24);
+        if (decode_residual(h, sl, gb, sl->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX + p, scan, NULL, 16) < 0) {
             return -1; //FIXME continue if partitioned and other return -1 too
         }
 
@@ -646,7 +651,7 @@ static av_always_inline int decode_luma_residual(H264Context *h, H264SliceContex
             for(i8x8=0; i8x8<4; i8x8++){
                 for(i4x4=0; i4x4<4; i4x4++){
                     const int index= i4x4 + 4*i8x8 + p*16;
-                    if( decode_residual(h, sl, h->intra_gb_ptr, h->mb + (16*index << pixel_shift),
+                    if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift),
                         index, scan + 1, h->dequant4_coeff[p][qscale], 15) < 0 ){
                         return -1;
                     }
@@ -664,7 +669,7 @@ static av_always_inline int decode_luma_residual(H264Context *h, H264SliceContex
         for(i8x8=0; i8x8<4; i8x8++){
             if(cbp & (1<<i8x8)){
                 if(IS_8x8DCT(mb_type)){
-                    int16_t *buf = &h->mb[64*i8x8+256*p << pixel_shift];
+                    int16_t *buf = &sl->mb[64*i8x8+256*p << pixel_shift];
                     uint8_t *nnz;
                     for(i4x4=0; i4x4<4; i4x4++){
                         const int index= i4x4 + 4*i8x8 + p*16;
@@ -678,7 +683,7 @@ static av_always_inline int decode_luma_residual(H264Context *h, H264SliceContex
                 }else{
                     for(i4x4=0; i4x4<4; i4x4++){
                         const int index= i4x4 + 4*i8x8 + p*16;
-                        if( decode_residual(h, sl, gb, h->mb + (16*index << pixel_shift), index,
+                        if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), index,
                                             scan, h->dequant4_coeff[cqm][qscale], 16) < 0 ){
                             return -1;
                         }
@@ -694,7 +699,7 @@ static av_always_inline int decode_luma_residual(H264Context *h, H264SliceContex
     }
 }
 
-int ff_h264_decode_mb_cavlc(H264Context *h, H264SliceContext *sl)
+int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
 {
     int mb_xy;
     int partition_count;
@@ -703,32 +708,32 @@ int ff_h264_decode_mb_cavlc(H264Context *h, H264SliceContext *sl)
     int decode_chroma = h->sps.chroma_format_idc == 1 || h->sps.chroma_format_idc == 2;
     const int pixel_shift = h->pixel_shift;
 
-    mb_xy = h->mb_xy = h->mb_x + h->mb_y*h->mb_stride;
+    mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;
 
-    tprintf(h->avctx, "pic:%d mb:%d/%d\n", h->frame_num, h->mb_x, h->mb_y);
+    ff_tlog(h->avctx, "pic:%d mb:%d/%d\n", h->frame_num, sl->mb_x, sl->mb_y);
     cbp = 0; /* avoid warning. FIXME: find a solution without slowing
                 down the code */
     if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
-        if(h->mb_skip_run==-1)
-            h->mb_skip_run= get_ue_golomb(&h->gb);
+        if (sl->mb_skip_run == -1)
+            sl->mb_skip_run = get_ue_golomb(&sl->gb);
 
-        if (h->mb_skip_run--) {
-            if(FRAME_MBAFF(h) && (h->mb_y&1) == 0){
-                if(h->mb_skip_run==0)
-                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb);
+        if (sl->mb_skip_run--) {
+            if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) {
+                if (sl->mb_skip_run == 0)
+                    sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb);
             }
             decode_mb_skip(h, sl);
             return 0;
         }
     }
     if (FRAME_MBAFF(h)) {
-        if( (h->mb_y&1) == 0 )
-            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb);
+        if ((sl->mb_y & 1) == 0)
+            sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb);
     }
 
     sl->prev_mb_skipped = 0;
 
-    mb_type= get_ue_golomb(&h->gb);
+    mb_type= get_ue_golomb(&sl->gb);
     if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
         if(mb_type < 23){
             partition_count= b_mb_type_info[mb_type].partition_count;
@@ -751,7 +756,7 @@ int ff_h264_decode_mb_cavlc(H264Context *h, H264SliceContext *sl)
             mb_type--;
 decode_intra_mb:
         if(mb_type > 25){
-            av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(sl->slice_type), h->mb_x, h->mb_y);
+            av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(sl->slice_type), sl->mb_x, sl->mb_y);
             return -1;
         }
         partition_count=0;
@@ -760,7 +765,7 @@ decode_intra_mb:
         mb_type= i_mb_type_info[mb_type].type;
     }
 
-    if(MB_FIELD(h))
+    if (MB_FIELD(sl))
         mb_type |= MB_TYPE_INTERLACED;
 
     h->slice_table[mb_xy] = sl->slice_num;
@@ -770,12 +775,12 @@ decode_intra_mb:
                             h->sps.bit_depth_luma;
 
         // We assume these blocks are very rare so we do not optimize it.
-        sl->intra_pcm_ptr = align_get_bits(&h->gb);
-        if (get_bits_left(&h->gb) < mb_size) {
+        sl->intra_pcm_ptr = align_get_bits(&sl->gb);
+        if (get_bits_left(&sl->gb) < mb_size) {
             av_log(h->avctx, AV_LOG_ERROR, "Not enough data for an intra PCM block.\n");
             return AVERROR_INVALIDDATA;
         }
-        skip_bits_long(&h->gb, mb_size);
+        skip_bits_long(&sl->gb, mb_size);
 
         // In deblocking, the quantizer is 0
         h->cur_pic.qscale_table[mb_xy] = 0;
@@ -796,7 +801,7 @@ decode_intra_mb:
         if(IS_INTRA4x4(mb_type)){
             int i;
             int di = 1;
-            if(dct8x8_allowed && get_bits1(&h->gb)){
+            if(dct8x8_allowed && get_bits1(&sl->gb)){
                 mb_type |= MB_TYPE_8x8DCT;
                 di = 4;
             }
@@ -805,8 +810,8 @@ decode_intra_mb:
             for(i=0; i<16; i+=di){
                 int mode = pred_intra_mode(h, sl, i);
 
-                if(!get_bits1(&h->gb)){
-                    const int rem_mode= get_bits(&h->gb, 3);
+                if(!get_bits1(&sl->gb)){
+                    const int rem_mode= get_bits(&sl->gb, 3);
                     mode = rem_mode + (rem_mode >= mode);
                 }
 
@@ -824,7 +829,7 @@ decode_intra_mb:
                 return -1;
         }
         if(decode_chroma){
-            pred_mode= ff_h264_check_intra_pred_mode(h, sl, get_ue_golomb_31(&h->gb), 1);
+            pred_mode= ff_h264_check_intra_pred_mode(h, sl, get_ue_golomb_31(&sl->gb), 1);
             if(pred_mode < 0)
                 return -1;
             sl->chroma_pred_mode = pred_mode;
@@ -836,9 +841,9 @@ decode_intra_mb:
 
         if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
             for(i=0; i<4; i++){
-                sl->sub_mb_type[i]= get_ue_golomb_31(&h->gb);
+                sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb);
                 if(sl->sub_mb_type[i] >=13){
-                    av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], h->mb_x, h->mb_y);
+                    av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y);
                     return -1;
                 }
                 sub_partition_count[i]= b_sub_mb_type_info[ sl->sub_mb_type[i] ].partition_count;
@@ -854,9 +859,9 @@ decode_intra_mb:
         }else{
             assert(sl->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ?
             for(i=0; i<4; i++){
-                sl->sub_mb_type[i]= get_ue_golomb_31(&h->gb);
+                sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb);
                 if(sl->sub_mb_type[i] >=4){
-                    av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], h->mb_x, h->mb_y);
+                    av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y);
                     return -1;
                 }
                 sub_partition_count[i]= p_sub_mb_type_info[ sl->sub_mb_type[i] ].partition_count;
@@ -865,7 +870,7 @@ decode_intra_mb:
         }
 
         for (list = 0; list < sl->list_count; list++) {
-            int ref_count = IS_REF0(mb_type) ? 1 : sl->ref_count[list] << MB_MBAFF(h);
+            int ref_count = IS_REF0(mb_type) ? 1 : sl->ref_count[list] << MB_MBAFF(sl);
             for(i=0; i<4; i++){
                 if(IS_DIRECT(sl->sub_mb_type[i])) continue;
                 if(IS_DIR(sl->sub_mb_type[i], 0, list)){
@@ -873,9 +878,9 @@ decode_intra_mb:
                     if(ref_count == 1){
                         tmp= 0;
                     }else if(ref_count == 2){
-                        tmp= get_bits1(&h->gb)^1;
+                        tmp= get_bits1(&sl->gb)^1;
                     }else{
-                        tmp= get_ue_golomb_31(&h->gb);
+                        tmp= get_ue_golomb_31(&sl->gb);
                         if(tmp>=ref_count){
                             av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
                             return -1;
@@ -909,9 +914,9 @@ decode_intra_mb:
                         const int index= 4*i + block_width*j;
                         int16_t (* mv_cache)[2]= &sl->mv_cache[list][ scan8[index] ];
                         pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my);
-                        mx += get_se_golomb(&h->gb);
-                        my += get_se_golomb(&h->gb);
-                        tprintf(h->avctx, "final mv:%d %d\n", mx, my);
+                        mx += get_se_golomb(&sl->gb);
+                        my += get_se_golomb(&sl->gb);
+                        ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
 
                         if(IS_SUB_8X8(sub_mb_type)){
                             mv_cache[ 1 ][0]=
@@ -945,13 +950,13 @@ decode_intra_mb:
             for (list = 0; list < sl->list_count; list++) {
                     unsigned int val;
                     if(IS_DIR(mb_type, 0, list)){
-                        int rc = sl->ref_count[list] << MB_MBAFF(h);
+                        int rc = sl->ref_count[list] << MB_MBAFF(sl);
                         if (rc == 1) {
                             val= 0;
                         } else if (rc == 2) {
-                            val= get_bits1(&h->gb)^1;
+                            val= get_bits1(&sl->gb)^1;
                         }else{
-                            val= get_ue_golomb_31(&h->gb);
+                            val= get_ue_golomb_31(&sl->gb);
                             if (val >= rc) {
                                 av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                 return -1;
@@ -963,9 +968,9 @@ decode_intra_mb:
             for (list = 0; list < sl->list_count; list++) {
                 if(IS_DIR(mb_type, 0, list)){
                     pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my);
-                    mx += get_se_golomb(&h->gb);
-                    my += get_se_golomb(&h->gb);
-                    tprintf(h->avctx, "final mv:%d %d\n", mx, my);
+                    mx += get_se_golomb(&sl->gb);
+                    my += get_se_golomb(&sl->gb);
+                    ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
 
                     fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
                 }
@@ -976,13 +981,13 @@ decode_intra_mb:
                     for(i=0; i<2; i++){
                         unsigned int val;
                         if(IS_DIR(mb_type, i, list)){
-                            int rc = sl->ref_count[list] << MB_MBAFF(h);
+                            int rc = sl->ref_count[list] << MB_MBAFF(sl);
                             if (rc == 1) {
                                 val= 0;
                             } else if (rc == 2) {
-                                val= get_bits1(&h->gb)^1;
+                                val= get_bits1(&sl->gb)^1;
                             }else{
-                                val= get_ue_golomb_31(&h->gb);
+                                val= get_ue_golomb_31(&sl->gb);
                                 if (val >= rc) {
                                     av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                     return -1;
@@ -998,9 +1003,9 @@ decode_intra_mb:
                     unsigned int val;
                     if(IS_DIR(mb_type, i, list)){
                         pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my);
-                        mx += get_se_golomb(&h->gb);
-                        my += get_se_golomb(&h->gb);
-                        tprintf(h->avctx, "final mv:%d %d\n", mx, my);
+                        mx += get_se_golomb(&sl->gb);
+                        my += get_se_golomb(&sl->gb);
+                        ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
 
                         val= pack16to32(mx,my);
                     }else
@@ -1014,13 +1019,13 @@ decode_intra_mb:
                     for(i=0; i<2; i++){
                         unsigned int val;
                         if(IS_DIR(mb_type, i, list)){ //FIXME optimize
-                            int rc = sl->ref_count[list] << MB_MBAFF(h);
+                            int rc = sl->ref_count[list] << MB_MBAFF(sl);
                             if (rc == 1) {
                                 val= 0;
                             } else if (rc == 2) {
-                                val= get_bits1(&h->gb)^1;
+                                val= get_bits1(&sl->gb)^1;
                             }else{
-                                val= get_ue_golomb_31(&h->gb);
+                                val= get_ue_golomb_31(&sl->gb);
                                 if (val >= rc) {
                                     av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                     return -1;
@@ -1036,9 +1041,9 @@ decode_intra_mb:
                     unsigned int val;
                     if(IS_DIR(mb_type, i, list)){
                         pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
-                        mx += get_se_golomb(&h->gb);
-                        my += get_se_golomb(&h->gb);
-                        tprintf(h->avctx, "final mv:%d %d\n", mx, my);
+                        mx += get_se_golomb(&sl->gb);
+                        my += get_se_golomb(&sl->gb);
+                        ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
 
                         val= pack16to32(mx,my);
                     }else
@@ -1053,18 +1058,18 @@ decode_intra_mb:
         write_back_motion(h, sl, mb_type);
 
     if(!IS_INTRA16x16(mb_type)){
-        cbp= get_ue_golomb(&h->gb);
+        cbp= get_ue_golomb(&sl->gb);
 
         if(decode_chroma){
             if(cbp > 47){
-                av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y);
+                av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y);
                 return -1;
             }
             if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
             else                     cbp= golomb_to_inter_cbp   [cbp];
         }else{
             if(cbp > 15){
-                av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y);
+                av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y);
                 return -1;
             }
             if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
@@ -1073,9 +1078,9 @@ decode_intra_mb:
     }
 
     if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
-        mb_type |= MB_TYPE_8x8DCT*get_bits1(&h->gb);
+        mb_type |= MB_TYPE_8x8DCT*get_bits1(&sl->gb);
     }
-    h->cbp=
+    sl->cbp=
     h->cbp_table[mb_xy]= cbp;
     h->cur_pic.mb_type[mb_xy] = mb_type;
 
@@ -1083,7 +1088,7 @@ decode_intra_mb:
         int i4x4, i8x8, chroma_idx;
         int dquant;
         int ret;
-        GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
+        GetBitContext *gb = &sl->gb;
         const uint8_t *scan, *scan8x8;
         const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
 
@@ -1095,7 +1100,7 @@ decode_intra_mb:
             scan    = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
         }
 
-        dquant= get_se_golomb(&h->gb);
+        dquant= get_se_golomb(&sl->gb);
 
         sl->qscale += dquant;
 
@@ -1103,7 +1108,7 @@ decode_intra_mb:
             if (sl->qscale < 0) sl->qscale += max_qp + 1;
             else                sl->qscale -= max_qp+1;
             if (((unsigned)sl->qscale) > max_qp){
-                av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, h->mb_x, h->mb_y);
+                av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, sl->mb_x, sl->mb_y);
                 return -1;
             }
         }
@@ -1125,7 +1130,7 @@ decode_intra_mb:
         } else if (CHROMA422(h)) {
             if(cbp&0x30){
                 for(chroma_idx=0; chroma_idx<2; chroma_idx++)
-                    if (decode_residual(h, sl, gb, h->mb + ((256 + 16*16*chroma_idx) << pixel_shift),
+                    if (decode_residual(h, sl, gb, sl->mb + ((256 + 16*16*chroma_idx) << pixel_shift),
                                         CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma422_dc_scan,
                                         NULL, 8) < 0) {
                         return -1;
@@ -1135,7 +1140,7 @@ decode_intra_mb:
             if(cbp&0x20){
                 for(chroma_idx=0; chroma_idx<2; chroma_idx++){
                     const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[chroma_idx]];
-                    int16_t *mb = h->mb + (16*(16 + 16*chroma_idx) << pixel_shift);
+                    int16_t *mb = sl->mb + (16*(16 + 16*chroma_idx) << pixel_shift);
                     for (i8x8 = 0; i8x8 < 2; i8x8++) {
                         for (i4x4 = 0; i4x4 < 4; i4x4++) {
                             const int index = 16 + 16*chroma_idx + 8*i8x8 + i4x4;
@@ -1152,7 +1157,7 @@ decode_intra_mb:
         } else /* yuv420 */ {
             if(cbp&0x30){
                 for(chroma_idx=0; chroma_idx<2; chroma_idx++)
-                    if( decode_residual(h, sl, gb, h->mb + ((256 + 16*16*chroma_idx) << pixel_shift), CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma_dc_scan, NULL, 4) < 0){
+                    if( decode_residual(h, sl, gb, sl->mb + ((256 + 16*16*chroma_idx) << pixel_shift), CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma_dc_scan, NULL, 4) < 0){
                         return -1;
                     }
             }
@@ -1162,7 +1167,7 @@ decode_intra_mb:
                     const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[chroma_idx]];
                     for(i4x4=0; i4x4<4; i4x4++){
                         const int index= 16 + 16*chroma_idx + i4x4;
-                        if( decode_residual(h, sl, gb, h->mb + (16*index << pixel_shift), index, scan + 1, qmul, 15) < 0){
+                        if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), index, scan + 1, qmul, 15) < 0){
                             return -1;
                         }
                     }