WIP: reuse splitmv segmentation (partial)

still not reusing split mvs, but reusing partition size (8x8, 8x16, etc)

Change-Id: I4655b06fcdcbc71a97bff07def78297ae8e5104c

examples.mk

@@ -8,6 +8,20 @@
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
 
+LIBYUV_SRCS +=  third_party/libyuv/include/libyuv/basic_types.h  \
+                third_party/libyuv/include/libyuv/cpu_id.h  \
+                third_party/libyuv/include/libyuv/scale.h  \
+                third_party/libyuv/source/row.h \
+                third_party/libyuv/source/scale.c  \
+                third_party/libyuv/source/cpu_id.c
+
+NESTEGG_SRCS += nestegg/halloc/halloc.h \
+                nestegg/halloc/src/align.h \
+                nestegg/halloc/src/halloc.c \
+                nestegg/halloc/src/hlist.h \
+                nestegg/halloc/src/macros.h \
+                nestegg/include/nestegg/nestegg.h \
+                nestegg/src/nestegg.c
 
 # List of examples to build. UTILS are files that are taken from the source
 # tree directly, and GEN_EXAMPLES are files that are created from the
@@ -18,13 +32,7 @@ vpxdec.SRCS                 += vpx_ports/vpx_timer.h
 vpxdec.SRCS                 += vpx/vpx_integer.h
 vpxdec.SRCS                 += args.c args.h
 vpxdec.SRCS                 += tools_common.c tools_common.h
-vpxdec.SRCS                 += nestegg/halloc/halloc.h
-vpxdec.SRCS                 += nestegg/halloc/src/align.h
-vpxdec.SRCS                 += nestegg/halloc/src/halloc.c
-vpxdec.SRCS                 += nestegg/halloc/src/hlist.h
-vpxdec.SRCS                 += nestegg/halloc/src/macros.h
-vpxdec.SRCS                 += nestegg/include/nestegg/nestegg.h
-vpxdec.SRCS                 += nestegg/src/nestegg.c
+vpxdec.SRCS                 += $(NESTEGG_SRCS)
 vpxdec.GUID                  = BA5FE66F-38DD-E034-F542-B1578C5FB950
 vpxdec.DESCRIPTION           = Full featured decoder
 UTILS-$(CONFIG_ENCODERS)    += vpxenc.c
@@ -35,6 +43,8 @@ vpxenc.SRCS                 += vpx_ports/mem_ops_aligned.h
 vpxenc.SRCS                 += libmkv/EbmlIDs.h
 vpxenc.SRCS                 += libmkv/EbmlWriter.c
 vpxenc.SRCS                 += libmkv/EbmlWriter.h
+vpxenc.SRCS                 += $(LIBYUV_SRCS)
+vpxenc.SRCS                 += $(NESTEGG_SRCS)
 vpxenc.GUID                  = 548DEC74-7A15-4B2B-AFC3-AA102E7C25C1
 vpxenc.DESCRIPTION           = Full featured encoder
 UTILS-$(CONFIG_ENCODERS)    += vp8_scalable_patterns.c
@@ -98,13 +108,7 @@ vp8cx_set_ref.DESCRIPTION           = VP8 set encoder reference frame
 
 # C file is provided, not generated automatically.
 GEN_EXAMPLES-$(CONFIG_MULTI_RES_ENCODING) += vp8_multi_resolution_encoder.c
-vp8_multi_resolution_encoder.SRCS  \
-                         += third_party/libyuv/include/libyuv/basic_types.h  \
-                            third_party/libyuv/include/libyuv/cpu_id.h  \
-                            third_party/libyuv/include/libyuv/scale.h  \
-                            third_party/libyuv/source/row.h \
-                            third_party/libyuv/source/scale.c  \
-                            third_party/libyuv/source/cpu_id.c
+vp8_multi_resolution_encoder.SRCS         += $(LIBYUV_SRCS)
 vp8_multi_resolution_encoder.GUID         = 04f8738e-63c8-423b-90fa-7c2703a374de
 vp8_multi_resolution_encoder.DESCRIPTION  = VP8 Multiple-resolution Encoding
 

third_party/libyuv/source/scale.c

@@ -60,7 +60,7 @@ void SetUseReferenceImpl(int use) {
 
 #if defined(__ARM_NEON__) && !defined(YUV_DISABLE_ASM)
 #define HAS_SCALEROWDOWN2_NEON
-void ScaleRowDown2_NEON(const uint8* src_ptr, int /* src_stride */,
+void ScaleRowDown2_NEON(const uint8* src_ptr, int src_stride,
                         uint8* dst, int dst_width) {
   asm volatile (
     "1:                                        \n"
@@ -102,7 +102,7 @@ void ScaleRowDown2Int_NEON(const uint8* src_ptr, int src_stride,
 }
 
 #define HAS_SCALEROWDOWN4_NEON
-static void ScaleRowDown4_NEON(const uint8* src_ptr, int /* src_stride */,
+static void ScaleRowDown4_NEON(const uint8* src_ptr, int src_stride,
                                uint8* dst_ptr, int dst_width) {
   asm volatile (
     "1:                                        \n"
@@ -160,7 +160,7 @@ static void ScaleRowDown4Int_NEON(const uint8* src_ptr, int src_stride,
 // Down scale from 4 to 3 pixels.  Use the neon multilane read/write
 //  to load up the every 4th pixel into a 4 different registers.
 // Point samples 32 pixels to 24 pixels.
-static void ScaleRowDown34_NEON(const uint8* src_ptr, int /* src_stride */,
+static void ScaleRowDown34_NEON(const uint8* src_ptr, int src_stride,
                                 uint8* dst_ptr, int dst_width) {
   asm volatile (
     "1:                                        \n"
@@ -284,7 +284,7 @@ const unsigned short mult38_div9[8] __attribute__ ((aligned(16))) =
     65536 / 18, 65536 / 18, 65536 / 18, 65536 / 18 };
 
 // 32 -> 12
-static void ScaleRowDown38_NEON(const uint8* src_ptr, int,
+static void ScaleRowDown38_NEON(const uint8* src_ptr, int src_stride,
                                 uint8* dst_ptr, int dst_width) {
   asm volatile (
     "vld1.u8      {q3}, [%3]                   \n"

vp8/common/blockd.h

@@ -205,6 +205,11 @@ typedef struct macroblockd
     DECLARE_ALIGNED(16, short,  dequant_y2[16]);
     DECLARE_ALIGNED(16, short,  dequant_uv[16]);
 
+    /* position of this macroblock */
+    int mbr;
+    int mbc;
+    int mbrc;
+
     /* 16 Y blocks, 4 U, 4 V, 1 DC 2nd order block, each with 16 entries. */
     BLOCKD block[25];
     int fullpixel_mask;

vp8/encoder/encodeframe.c

@@ -411,6 +411,10 @@ void encode_mb_row(VP8_COMP *cpi,
     // for each macroblock col in image
     for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
     {
+        xd->mbr = mb_row;
+        xd->mbc = mb_col;
+        xd->mbrc = mb_row * cm->mb_cols + mb_col;
+
         // Distance of Mb to the left & right edges, specified in
         // 1/8th pel units as they are always compared to values
         // that are in 1/8th pel units
@@ -1111,6 +1115,8 @@ extern int cnt_pm;
 
 extern void vp8_fix_contexts(MACROBLOCKD *x);
 
+#include "valgrind/memcheck.h"
+
 int vp8cx_encode_inter_macroblock
 (
     VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t,
@@ -1130,6 +1136,15 @@ int vp8cx_encode_inter_macroblock
     else
         x->encode_breakout = cpi->oxcf.encode_breakout;
 
+    if (cpi->external_modeinfo)
+    {
+        vp8_rd_use_external_mode(cpi, x, recon_yoffset, recon_uvoffset, &rate,
+                                 &distortion, &intra_error);
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate);
+        VALGRIND_CHECK_VALUE_IS_DEFINED(distortion);
+        VALGRIND_CHECK_VALUE_IS_DEFINED(intra_error);
+    }
+    else
     if (cpi->sf.RD)
     {
         int zbin_mode_boost_enabled = cpi->zbin_mode_boost_enabled;

vp8/encoder/onyx_if.c

@@ -859,7 +859,7 @@ void vp8_set_speed_features(VP8_COMP *cpi)
         {
             sf->auto_filter = 0;                     // Faster selection of loop filter
             sf->search_method = HEX;
-            sf->iterative_sub_pixel = 0;
+            //sf->iterative_sub_pixel = 0;
         }
 
         if (Speed > 6)
@@ -2449,7 +2449,7 @@ int vp8_use_as_reference(VP8_COMP *cpi, int ref_frame_flags)
 }
 int vp8_update_reference(VP8_COMP *cpi, int ref_frame_flags)
 {
-    if (ref_frame_flags > 7)
+    if (ref_frame_flags > 127)
         return -1 ;
 
     cpi->common.refresh_golden_frame = 0;
@@ -2465,6 +2465,8 @@ int vp8_update_reference(VP8_COMP *cpi, int ref_frame_flags)
     if (ref_frame_flags & VP8_ALT_FLAG)
         cpi->common.refresh_alt_ref_frame = 1;
 
+    cpi->common.copy_buffer_to_gf = (ref_frame_flags >> 3) & 3;
+    cpi->common.copy_buffer_to_arf = (ref_frame_flags >> 5) & 3;
     return 0;
 }
 
@@ -3187,8 +3189,11 @@ static void encode_frame_to_data_rate
         cpi->per_frame_bandwidth  = (int)(cpi->target_bandwidth / cpi->output_frame_rate);
 
     // Default turn off buffer to buffer copying
+    if(!cpi->external_modeinfo)
+    {
     cm->copy_buffer_to_gf = 0;
     cm->copy_buffer_to_arf = 0;
+    }
 
     // Clear zbin over-quant value and mode boost values.
     cpi->zbin_over_quant = 0;
@@ -4063,10 +4068,14 @@ static void encode_frame_to_data_rate
     // For inter frames the current default behavior is that when
     // cm->refresh_golden_frame is set we copy the old GF over to the ARF buffer
     // This is purely an encoder decision at present.
-    if (!cpi->oxcf.error_resilient_mode && cm->refresh_golden_frame)
+    if(!cpi->external_modeinfo)
+    {
+    if (!cpi->oxcf.error_resilient_mode && cm->refresh_golden_frame
+        && !cm->refresh_alt_ref_frame)
         cm->copy_buffer_to_arf  = 2;
     else
         cm->copy_buffer_to_arf  = 0;
+    }
 
     cm->frame_to_show = &cm->yv12_fb[cm->new_fb_idx];
 
@@ -4620,7 +4629,12 @@ int vp8_get_compressed_data(VP8_COMP *cpi, unsigned int *frame_flags, unsigned l
         return -1;
 
     cm = &cpi->common;
-
+if(cm->refresh_last_frame && cm->refresh_golden_frame && cm->refresh_alt_ref_frame)
+{
+    cm->refresh_golden_frame = 0;
+    cm->refresh_alt_ref_frame = 0;
+    *frame_flags |= 1;
+}
     if (setjmp(cpi->common.error.jmp))
     {
         cpi->common.error.setjmp = 0;

vp8/encoder/onyx_int.h

@@ -678,7 +678,7 @@ typedef struct VP8_COMP
     /* Number of MBs per row at lower-resolution level */
     int    mr_low_res_mb_cols;
 #endif
-
+    MODE_INFO *external_modeinfo;
 } VP8_COMP;
 
 void control_data_rate(VP8_COMP *cpi);

vp8/encoder/rdopt.c

@@ -33,6 +33,7 @@
 #include "rdopt.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vp8/common/systemdependent.h"
+#include "valgrind/memcheck.h"
 
 extern void vp8_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x);
 
@@ -735,11 +736,12 @@ static int rd_pick_intra4x4mby_modes(VP8_COMP *cpi, MACROBLOCK *mb, int *Rate,
             break;
     }
 
+    VALGRIND_CHECK_VALUE_IS_DEFINED(tot_rate_y);
+    VALGRIND_CHECK_VALUE_IS_DEFINED(total_rd);
     if(total_rd >= (int64_t)best_rd)
         return INT_MAX;
-
     *Rate = cost;
-    *rate_y += tot_rate_y;
+    *rate_y = tot_rate_y;
     *Distortion = distortion;
 
     return RDCOST(mb->rdmult, mb->rddiv, cost, distortion);
@@ -1477,6 +1479,246 @@ static int vp8_rd_pick_best_mbsegmentation(VP8_COMP *cpi, MACROBLOCK *x,
     return bsi.segment_rd;
 }
 
+
+static void rd_reuse_segment(VP8_COMP *cpi, MACROBLOCK *x,
+                             BEST_SEG_INFO *bsi, unsigned int segmentation)
+{
+    int i;
+    int const *labels;
+    int br = 0;
+    int bd = 0;
+    B_PREDICTION_MODE this_mode;
+    int_mv reused_mv[16];
+
+
+    int label_count;
+    int this_segment_rd = 0;
+    int label_mv_thresh;
+    int rate = 0;
+    int sbr = 0;
+    int sbd = 0;
+    int segmentyrate = 0;
+
+    vp8_variance_fn_ptr_t *v_fn_ptr;
+
+    ENTROPY_CONTEXT_PLANES t_above, t_left;
+    ENTROPY_CONTEXT *ta;
+    ENTROPY_CONTEXT *tl;
+    ENTROPY_CONTEXT_PLANES t_above_b, t_left_b;
+    ENTROPY_CONTEXT *ta_b;
+    ENTROPY_CONTEXT *tl_b;
+
+    vpx_memcpy(&t_above, x->e_mbd.above_context, sizeof(ENTROPY_CONTEXT_PLANES));
+    vpx_memcpy(&t_left, x->e_mbd.left_context, sizeof(ENTROPY_CONTEXT_PLANES));
+
+    ta = (ENTROPY_CONTEXT *)&t_above;
+    tl = (ENTROPY_CONTEXT *)&t_left;
+    ta_b = (ENTROPY_CONTEXT *)&t_above_b;
+    tl_b = (ENTROPY_CONTEXT *)&t_left_b;
+
+    br = 0;
+    bd = 0;
+
+    v_fn_ptr = &cpi->fn_ptr[segmentation];
+    labels = vp8_mbsplits[segmentation];
+    label_count = vp8_mbsplit_count[segmentation];
+
+    // 64 makes this threshold really big effectively
+    // making it so that we very rarely check mvs on
+    // segments.   setting this to 1 would make mv thresh
+    // roughly equal to what it is for macroblocks
+    label_mv_thresh = 1 * bsi->mvthresh / label_count ;
+
+    // Segmentation method overheads
+    rate = vp8_cost_token(vp8_mbsplit_tree, vp8_mbsplit_probs, vp8_mbsplit_encodings + segmentation);
+    rate += vp8_cost_mv_ref(SPLITMV, bsi->mdcounts);
+    this_segment_rd += RDCOST(x->rdmult, x->rddiv, rate, 0);
+    br += rate;
+
+    for (i = 0; i < 16; i++)
+        reused_mv[i].as_int = x->e_mbd.block[i].bmi.mv.as_int;
+
+    for (i = 0; i < label_count; i++)
+    {
+        int_mv mode_mv[B_MODE_COUNT];
+        int best_label_rd = INT_MAX;
+        B_PREDICTION_MODE mode_selected = ZERO4X4;
+        int bestlabelyrate = 0;
+
+        // search for the best motion vector on this segment
+        for (this_mode = LEFT4X4; this_mode <= NEW4X4 ; this_mode ++)
+        {
+            int this_rd;
+            int distortion;
+            int labelyrate;
+            ENTROPY_CONTEXT_PLANES t_above_s, t_left_s;
+            ENTROPY_CONTEXT *ta_s;
+            ENTROPY_CONTEXT *tl_s;
+
+            vpx_memcpy(&t_above_s, &t_above, sizeof(ENTROPY_CONTEXT_PLANES));
+            vpx_memcpy(&t_left_s, &t_left, sizeof(ENTROPY_CONTEXT_PLANES));
+
+            ta_s = (ENTROPY_CONTEXT *)&t_above_s;
+            tl_s = (ENTROPY_CONTEXT *)&t_left_s;
+
+            /* find the first block for this label */
+            if (this_mode == NEW4X4)
+            {
+                int b;
+                for(b=0; b<16; b++)
+                    if(labels[b] == i) break;
+                mode_mv[NEW4X4].as_int = reused_mv[b].as_int;
+            }
+
+
+            rate = labels2mode(x, labels, i, this_mode, &mode_mv[this_mode],
+                               bsi->ref_mv, x->mvcost);
+
+            // Trap vectors that reach beyond the UMV borders
+            if (((mode_mv[this_mode].as_mv.row >> 3) < x->mv_row_min) || ((mode_mv[this_mode].as_mv.row >> 3) > x->mv_row_max) ||
+                ((mode_mv[this_mode].as_mv.col >> 3) < x->mv_col_min) || ((mode_mv[this_mode].as_mv.col >> 3) > x->mv_col_max))
+            {
+                continue;
+            }
+
+            distortion = vp8_encode_inter_mb_segment(x, labels, i) / 4;
+
+            labelyrate = rdcost_mbsegment_y(x, labels, i, ta_s, tl_s);
+            rate += labelyrate;
+
+            this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
+
+            if (this_rd < best_label_rd)
+            {
+                sbr = rate;
+                sbd = distortion;
+                bestlabelyrate = labelyrate;
+                mode_selected = this_mode;
+                best_label_rd = this_rd;
+
+                vpx_memcpy(ta_b, ta_s, sizeof(ENTROPY_CONTEXT_PLANES));
+                vpx_memcpy(tl_b, tl_s, sizeof(ENTROPY_CONTEXT_PLANES));
+
+            }
+        } /*for each 4x4 mode*/
+
+        vpx_memcpy(ta, ta_b, sizeof(ENTROPY_CONTEXT_PLANES));
+        vpx_memcpy(tl, tl_b, sizeof(ENTROPY_CONTEXT_PLANES));
+
+        labels2mode(x, labels, i, mode_selected, &mode_mv[mode_selected],
+                    bsi->ref_mv, x->mvcost);
+
+        br += sbr;
+        bd += sbd;
+        segmentyrate += bestlabelyrate;
+        this_segment_rd += best_label_rd;
+
+        if (this_segment_rd >= bsi->segment_rd)
+            break;
+
+    } /* for each label */
+
+    if (this_segment_rd < bsi->segment_rd)
+    {
+        bsi->r = br;
+        bsi->d = bd;
+        bsi->segment_yrate = segmentyrate;
+        bsi->segment_rd = this_segment_rd;
+        bsi->segment_num = segmentation;
+
+        // store everything needed to come back to this!!
+        for (i = 0; i < 16; i++)
+        {
+            bsi->mvs[i].as_mv = x->partition_info->bmi[i].mv.as_mv;
+            bsi->modes[i] = x->partition_info->bmi[i].mode;
+            bsi->eobs[i] = x->e_mbd.eobs[i];
+        }
+    }
+}
+
+
+static int vp8_rd_reuse_mbsegmentation(VP8_COMP *cpi, MACROBLOCK *x,
+                                           int_mv *best_ref_mv, int best_rd,
+                                           int *mdcounts, int *returntotrate,
+                                           int *returnyrate, int *returndistortion,
+                                           int mvthresh)
+{
+    int i;
+    BEST_SEG_INFO bsi;
+
+    vpx_memset(&bsi, 0, sizeof(bsi));
+
+    bsi.segment_rd = best_rd;
+    bsi.ref_mv = best_ref_mv;
+    bsi.mvp.as_int = best_ref_mv->as_int;
+    bsi.mvthresh = mvthresh;
+    bsi.mdcounts = mdcounts;
+
+    for(i = 0; i < 16; i++)
+    {
+        bsi.modes[i] = ZERO4X4;
+    }
+
+    {
+        int s;
+
+        for(s = 0; s < BLOCK_4X4; s++)
+        {
+            char set[16] = {0};
+            int smv[16];
+
+            for (i=0; i<16; i++)
+            {
+                int p = vp8_mbsplits[s][i];
+
+                if(!set[p])
+                {
+                    set[p] = 1;
+                    smv[p] = x->e_mbd.block[i].bmi.mv.as_int;
+                }
+                if(smv[p] != x->e_mbd.block[i].bmi.mv.as_int)
+                    break;
+            }
+            if(i==16)
+                break;
+        }
+        rd_check_segment(cpi, x, &bsi, s);
+    }
+
+    /* set it to the best */
+    for (i = 0; i < 16; i++)
+    {
+        BLOCKD *bd = &x->e_mbd.block[i];
+
+        bd->bmi.mv.as_int = bsi.mvs[i].as_int;
+        *bd->eob = bsi.eobs[i];
+    }
+
+    *returntotrate = bsi.r;
+    *returndistortion = bsi.d;
+    *returnyrate = bsi.segment_yrate;
+
+    /* save partitions */
+    x->e_mbd.mode_info_context->mbmi.partitioning = bsi.segment_num;
+    x->partition_info->count = vp8_mbsplit_count[bsi.segment_num];
+
+    for (i = 0; i < x->partition_info->count; i++)
+    {
+        int j;
+
+        j = vp8_mbsplit_offset[bsi.segment_num][i];
+
+        x->partition_info->bmi[i].mode = bsi.modes[j];
+        x->partition_info->bmi[i].mv.as_mv = bsi.mvs[j].as_mv;
+    }
+    /*
+     * used to set x->e_mbd.mode_info_context->mbmi.mv.as_int
+     */
+    x->partition_info->bmi[15].mv.as_int = bsi.mvs[15].as_int;
+
+    return bsi.segment_rd;
+}
+
 //The improved MV prediction
 void vp8_mv_pred
 (
@@ -1709,6 +1951,591 @@ static void rd_update_mvcount(VP8_COMP *cpi, MACROBLOCK *x, int_mv *best_ref_mv)
     }
 }
 
+#if 0
+void vp8_rd_use_external_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
+                            int recon_uvoffset, int *returnrate,
+                            int *returndistortion, int *returnintra)
+{
+    unsigned char *plane[4][3];
+    MODE_INFO *mi;
+    int rate, rate_y, rate_uv;
+    int distortion, distortion_y, distortion_uv;
+
+
+    mi = cpi->external_modeinfo + x->e_mbd.mbrc;
+    *x->e_mbd.mode_info_context = *mi;
+
+    /* Map partitioning info */
+    if(mi->mbmi.mode == SPLITMV)
+    {
+        int i;
+
+        x->partition_info->count = vp8_mbsplit_count[mi->mbmi.partitioning];
+
+        for (i = 0; i < x->partition_info->count; i++)
+        {
+            int j;
+
+            j = vp8_mbsplit_offset[mi->mbmi.partitioning][i];
+
+            /* TODO: this is mapping a union onto a struct, assume the
+             * data will never be looked at from the wrong context.
+             */
+            x->partition_info->bmi[i].mode = NEW4X4; //mi->bmi[j].as_mode;
+            x->partition_info->bmi[i].mv.as_int = mi->bmi[j].mv.as_int;
+        }
+        /*
+         * used to set x->e_mbd.mode_info_context->mbmi.mv.as_int
+         */
+        x->partition_info->bmi[15].mv.as_int = mi->bmi[15].mv.as_int;
+    }
+
+    rate = x->mbmode_cost[x->e_mbd.frame_type][mi->mbmi.mode];
+    rate += x->ref_frame_cost[mi->mbmi.ref_frame];
+    if(mi->mbmi.ref_frame == INTRA_FRAME)
+    {
+        vp8_build_intra_predictors_mby(&x->e_mbd);
+        macro_block_yrd(x, &rate_y, &distortion);
+        //hack
+        rate_uv = rate_y/4;
+        distortion_uv = distortion_y/4;
+    }
+    else
+    {
+        int sign_bias;
+        int_mv best_ref_mv_sb[2];
+        int_mv mode_mv_sb[2][MB_MODE_COUNT];
+        int_mv best_ref_mv;
+        int mdcounts[4];
+
+        get_predictor_pointers(cpi, plane, recon_yoffset, recon_uvoffset);
+        x->e_mbd.pre.y_buffer = plane[mi->mbmi.ref_frame][0];
+        x->e_mbd.pre.u_buffer = plane[mi->mbmi.ref_frame][1];
+        x->e_mbd.pre.v_buffer = plane[mi->mbmi.ref_frame][2];
+
+        /* Get nearby MV info */
+        sign_bias = vp8_find_near_mvs_bias(&x->e_mbd,
+                                           x->e_mbd.mode_info_context,
+                                           mode_mv_sb,
+                                           best_ref_mv_sb,
+                                           mdcounts,
+                                           mi->mbmi.ref_frame,
+                                           cpi->common.ref_frame_sign_bias);
+        best_ref_mv.as_int = best_ref_mv_sb[sign_bias].as_int;
+
+        if(mi->mbmi.mode != ZEROMV)
+            rate += vp8_mv_bit_cost(&mi->mbmi.mv, &best_ref_mv, x->mvcost, 96);
+        rate += vp8_cost_mv_ref(mi->mbmi.mode, mdcounts);
+
+        vp8_build_inter16x16_predictors_mby(&x->e_mbd, x->e_mbd.predictor, 16);
+        //rate += vp8_cost_mv_ref(mi->mbmi.mode, mdcounts);
+
+        // Y cost and distortion
+        macro_block_yrd(x, &rate_y, &distortion_y);
+
+        // UV cost and distortion
+        rd_inter16x16_uv(cpi, x, &rate_uv, &distortion_uv,
+                         cpi->common.full_pixel);
+    }
+
+    /* Test for skip blocks */
+    if (cpi->common.mb_no_coeff_skip)
+    {
+        int i, bit=1;
+
+        for(i=0; i<24; i++)
+            if(x->e_mbd.eobs[i])
+            {
+                bit = 0;
+                break;
+            }
+        if(bit)
+        {
+            rate_y = 0;
+            rate_uv = 0;
+        }
+        rate += vp8_cost_bit(cpi->prob_skip_false, bit);
+    }
+
+    *returnrate = rate + rate_y + rate_uv;
+    *returndistortion = distortion + distortion_y + distortion_uv;
+    *returnintra = (mi->mbmi.ref_frame == INTRA_FRAME)
+                   ? *returndistortion : INT_MAX;
+}
+#else
+void vp8_rd_use_external_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
+                            int recon_uvoffset, int *returnrate,
+                            int *returndistortion, int *returnintra)
+{
+    MODE_INFO *mi = cpi->external_modeinfo + x->e_mbd.mbrc;
+    BLOCK *b = &x->block[0];
+    BLOCKD *d = &x->e_mbd.block[0];
+    MACROBLOCKD *xd = &x->e_mbd;
+    union b_mode_info best_bmodes[16];
+    MB_MODE_INFO best_mbmode;
+    PARTITION_INFO best_partition;
+    int_mv best_ref_mv_sb[2];
+    int_mv mode_mv_sb[2][MB_MODE_COUNT];
+    int_mv best_ref_mv;
+    int_mv *mode_mv;
+    MB_PREDICTION_MODE this_mode;
+    int num00;
+
+    int i;
+    int mdcounts[4];
+    int rate=0;
+    int distortion=0;
+    int best_rd = INT_MAX;
+    int rate2, distortion2;
+    int uv_intra_rate, uv_intra_distortion, uv_intra_rate_tokenonly;
+    int rate_y, UNINITIALIZED_IS_SAFE(rate_uv);
+    int distortion_uv;
+    int best_yrd = INT_MAX;
+
+    MB_PREDICTION_MODE uv_intra_mode;
+    int_mv mvp;
+    int near_sadidx[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+    int saddone=0;
+    int sr=0;    //search range got from mv_pred(). It uses step_param levels. (0-7)
+
+    unsigned char *plane[4][3];
+    int sign_bias = 0;
+
+    mode_mv = mode_mv_sb[sign_bias];
+    best_ref_mv.as_int = 0;
+    vpx_memset(mode_mv_sb, 0, sizeof(mode_mv_sb));
+    vpx_memset(&best_mbmode, 0, sizeof(best_mbmode));
+    vpx_memset(&best_bmodes, 0, sizeof(best_bmodes));
+
+    {
+        sign_bias = vp8_find_near_mvs_bias(&x->e_mbd,
+                                           x->e_mbd.mode_info_context,
+                                           mode_mv_sb,
+                                           best_ref_mv_sb,
+                                           mdcounts,
+                                           LAST_FRAME,
+                                           cpi->common.ref_frame_sign_bias);
+
+        mode_mv = mode_mv_sb[sign_bias];
+        best_ref_mv.as_int = best_ref_mv_sb[sign_bias].as_int;
+    }
+
+    cpi->ref_frame_flags|=0x7;
+    get_predictor_pointers(cpi, plane, recon_yoffset, recon_uvoffset);
+
+    *returnintra = INT_MAX;
+    cpi->mbs_tested_so_far++;          // Count of the number of MBs tested so far this frame
+
+    x->skip = 0;
+
+    x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
+    rd_pick_intra_mbuv_mode(cpi, x, &uv_intra_rate, &uv_intra_rate_tokenonly, &uv_intra_distortion);
+    uv_intra_mode = x->e_mbd.mode_info_context->mbmi.uv_mode;
+
+    {
+        int this_rd = INT_MAX;
+        int disable_skip = 0;
+        int other_cost = 0;
+        int this_ref_frame;
+
+        // These variables hold are rolling total cost and distortion for this mode
+        rate2 = 0;
+        distortion2 = 0;
+
+        this_mode = mi->mbmi.mode; //JRK
+        this_ref_frame = mi->mbmi.ref_frame;
+
+#if 1
+        memcpy(x->e_mbd.mode_info_context, mi, sizeof(*mi));
+#else
+        x->e_mbd.mode_info_context->mbmi.mode = this_mode;
+        x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
+        x->e_mbd.mode_info_context->mbmi.ref_frame = this_ref_frame;
+#endif
+//if(this_mode == SPLITMV) this_mode=NEWMV;
+        /* everything but intra */
+        if (x->e_mbd.mode_info_context->mbmi.ref_frame)
+        {
+            x->e_mbd.pre.y_buffer = plane[this_ref_frame][0];
+            x->e_mbd.pre.u_buffer = plane[this_ref_frame][1];
+            x->e_mbd.pre.v_buffer = plane[this_ref_frame][2];
+
+            if (sign_bias != cpi->common.ref_frame_sign_bias[this_ref_frame])
+            {
+                sign_bias = cpi->common.ref_frame_sign_bias[this_ref_frame];
+                mode_mv = mode_mv_sb[sign_bias];
+                best_ref_mv.as_int = best_ref_mv_sb[sign_bias].as_int;
+            }
+        }
+
+        // Experimental code. Special case for gf and arf zeromv modes. Increase zbin size to supress noise
+        if (cpi->zbin_mode_boost_enabled)
+        {
+            if ( this_ref_frame == INTRA_FRAME )
+                cpi->zbin_mode_boost = 0;
+            else
+            {
+                if (this_mode == ZEROMV)
+                {
+                    if (this_ref_frame != LAST_FRAME)
+                        cpi->zbin_mode_boost = GF_ZEROMV_ZBIN_BOOST;
+                    else
+                        cpi->zbin_mode_boost = LF_ZEROMV_ZBIN_BOOST;
+                }
+                else if (this_mode == SPLITMV)
+                    cpi->zbin_mode_boost = 0;
+                else
+                    cpi->zbin_mode_boost = MV_ZBIN_BOOST;
+            }
+
+            vp8_update_zbin_extra(cpi, x);
+        }
+
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate2);
+        switch (this_mode)
+        {
+        case B_PRED:
+        {
+            int tmp_rd;
+
+            // Note the rate value returned here includes the cost of coding the BPRED mode : x->mbmode_cost[x->e_mbd.frame_type][BPRED];
+            tmp_rd = rd_pick_intra4x4mby_modes(cpi, x, &rate, &rate_y, &distortion, INT_MAX);
+            VALGRIND_CHECK_VALUE_IS_DEFINED(rate);
+            VALGRIND_CHECK_VALUE_IS_DEFINED(rate_y);
+            VALGRIND_CHECK_VALUE_IS_DEFINED(distortion);
+            rate2 += rate;
+            distortion2 += distortion;
+
+            if(tmp_rd < best_yrd)
+            {
+                rate2 += uv_intra_rate;
+                rate_uv = uv_intra_rate_tokenonly;
+                distortion2 += uv_intra_distortion;
+                distortion_uv = uv_intra_distortion;
+            }
+            else
+            {
+                this_rd = INT_MAX;
+                disable_skip = 1;
+            }
+        }
+        break;
+
+        case SPLITMV:
+        {
+#if 1
+            int tmp_rd;
+            int this_rd_thresh;
+
+            //this_rd_thresh = (this_ref_frame == 1) ? cpi->rd_threshes[THR_NEW1] : cpi->rd_threshes[THR_NEW3];
+            //this_rd_thresh = (this_ref_frame == 2) ? cpi->rd_threshes[THR_NEW2] : this_rd_thresh;
+            this_rd_thresh = 0;
+
+#if 0
+            tmp_rd = vp8_rd_pick_best_mbsegmentation(cpi, x, &best_ref_mv,
+                                                     best_yrd, mdcounts,
+                                                     &rate, &rate_y, &distortion, this_rd_thresh) ;
+#else
+            tmp_rd = vp8_rd_reuse_mbsegmentation(cpi, x, &best_ref_mv,
+                                                 best_yrd, mdcounts,
+                                                 &rate, &rate_y, &distortion, this_rd_thresh) ;
+#endif
+
+            VALGRIND_CHECK_VALUE_IS_DEFINED(rate);
+            VALGRIND_CHECK_VALUE_IS_DEFINED(distortion);
+            rate2 += rate;
+            distortion2 += distortion;
+
+            // If even the 'Y' rd value of split is higher than best so far then dont bother looking at UV
+            if (tmp_rd < best_yrd)
+            {
+                // Now work out UV cost and add it in
+                rd_inter4x4_uv(cpi, x, &rate_uv, &distortion_uv, cpi->common.full_pixel);
+                rate2 += rate_uv;
+                distortion2 += distortion_uv;
+            }
+            else
+            {
+                this_rd = INT_MAX;
+                disable_skip = 1;
+            }
+#else
+            int i;
+
+            for (i = 0; i < 16; i++)
+            {
+                x->e_mbd.block[i].bmi = mi->bmi[i];
+                x->e_mbd.block[i].eob = 15;
+            }
+            x->e_mbd.mode_info_context->mbmi.partitioning = mi->mbmi.partitioning;
+            x->partition_info->count = vp8_mbsplit_count[mi->mbmi.partitioning];
+            for (i = 0; i < x->partition_info->count; i++)
+            {
+                int j;
+
+                j = vp8_mbsplit_offset[mi->mbmi.partitioning][i];
+
+                x->partition_info->bmi[i].mode =
+                    mi->bmi[j].mv.as_int ? NEW4X4 : ZERO4X4;
+                x->partition_info->bmi[i].mv.as_mv = mi->bmi[j].mv.as_mv;
+                distortion2 = vp8_encode_inter_mb_segment(x, vp8_mbsplits[segmentation], i);
+                rate2 = 0;
+            }
+            // rate = labels2mode(x, labels, i, this_mode, &mode_mv[this_mode], bsi->ref_mv, x->mvcost);
+
+#endif
+        }
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate_y);
+        break;
+        case DC_PRED:
+        case V_PRED:
+        case H_PRED:
+        case TM_PRED:
+            x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
+            vp8_build_intra_predictors_mby
+                (&x->e_mbd);
+            macro_block_yrd(x, &rate_y, &distortion) ;
+            rate2 += rate_y;
+            distortion2 += distortion;
+            rate2 += x->mbmode_cost[x->e_mbd.frame_type][x->e_mbd.mode_info_context->mbmi.mode];
+            rate2 += uv_intra_rate;
+            rate_uv = uv_intra_rate_tokenonly;
+            distortion2 += uv_intra_distortion;
+            distortion_uv = uv_intra_distortion;
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate_y);
+            break;
+
+        case NEWMV:
+            mode_mv[NEWMV].as_int = mi->mbmi.mv.as_int;
+        case NEARESTMV:
+        case NEARMV:
+            // Clip "next_nearest" so that it does not extend to far out of image
+            vp8_clamp_mv2(&mode_mv[this_mode], xd);
+
+            // Do not bother proceeding if the vector (from newmv,nearest or near) is 0,0 as this should then be coded using the zeromv mode.
+            if (((this_mode == NEARMV) || (this_mode == NEARESTMV)) && (mode_mv[this_mode].as_int == 0))
+                this_mode = ZEROMV;
+
+        case ZEROMV:
+
+            // Trap vectors that reach beyond the UMV borders
+            // Note that ALL New MV, Nearest MV Near MV and Zero MV code drops through to this point
+            // because of the lack of break statements in the previous two cases.
+            if (((mode_mv[this_mode].as_mv.row >> 3) < x->mv_row_min) || ((mode_mv[this_mode].as_mv.row >> 3) > x->mv_row_max) ||
+                ((mode_mv[this_mode].as_mv.col >> 3) < x->mv_col_min) || ((mode_mv[this_mode].as_mv.col >> 3) > x->mv_col_max))
+                assert(0);
+
+            vp8_set_mbmode_and_mvs(x, this_mode, &mode_mv[this_mode]);
+            vp8_build_inter16x16_predictors_mby(&x->e_mbd, x->e_mbd.predictor, 16);
+
+            if (cpi->active_map_enabled && x->active_ptr[0] == 0) {
+                x->skip = 1;
+            }
+            else if (x->encode_breakout)
+            {
+                unsigned int sse;
+                unsigned int var;
+                int threshold = (xd->block[0].dequant[1]
+                            * xd->block[0].dequant[1] >>4);
+
+                if(threshold < x->encode_breakout)
+                    threshold = x->encode_breakout;
+
+                var = vp8_variance16x16
+                        (*(b->base_src), b->src_stride,
+                        x->e_mbd.predictor, 16, &sse);
+
+                if (sse < threshold)
+                {
+                     unsigned int q2dc = xd->block[24].dequant[0];
+                    /* If theres is no codeable 2nd order dc
+                       or a very small uniform pixel change change */
+                    if ((sse - var < q2dc * q2dc >>4) ||
+                        (sse /2 > var && sse-var < 64))
+                    {
+                        // Check u and v to make sure skip is ok
+                        int sse2=  VP8_UVSSE(x);
+                        if (sse2 * 2 < threshold)
+                        {
+                            x->skip = 1;
+                            distortion2 = sse + sse2;
+                            rate2 = 500;
+
+                            /* for best_yrd calculation */
+                            rate_uv = 0;
+                            distortion_uv = sse2;
+
+                            disable_skip = 1;
+                            this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
+
+                            break;
+                        }
+                    }
+                }
+            }
+
+
+            //intermodecost[mode_index] = vp8_cost_mv_ref(this_mode, mdcounts);   // Experimental debug code
+
+            // Add in the Mv/mode cost
+            rate2 += vp8_cost_mv_ref(this_mode, mdcounts);
+
+            // Y cost and distortion
+            macro_block_yrd(x, &rate_y, &distortion);
+            rate2 += rate_y;
+            distortion2 += distortion;
+
+            // UV cost and distortion
+            rd_inter16x16_uv(cpi, x, &rate_uv, &distortion_uv, cpi->common.full_pixel);
+            rate2 += rate_uv;
+            distortion2 += distortion_uv;
+            break;
+
+        default:
+            assert(0);
+        }
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate_y);
+
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate2);
+        // Where skip is allowable add in the default per mb cost for the no skip case.
+        // where we then decide to skip we have to delete this and replace it with the
+        // cost of signallying a skip
+        if (cpi->common.mb_no_coeff_skip)
+        {
+            other_cost += vp8_cost_bit(cpi->prob_skip_false, 0);
+            rate2 += other_cost;
+        }
+
+        /* Estimate the reference frame signaling cost and add it
+         * to the rolling cost variable.
+         */
+        rate2 +=
+            x->ref_frame_cost[x->e_mbd.mode_info_context->mbmi.ref_frame];
+
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate2);
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate_y);
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate_uv);
+        if (!disable_skip)
+        {
+            // Test for the condition where skip block will be activated because there are no non zero coefficients and make any necessary adjustment for rate
+            if (cpi->common.mb_no_coeff_skip)
+            {
+                int tteob;
+
+                tteob = 0;
+
+                for (i = 0; i <= 24; i++)
+                {
+                    tteob += x->e_mbd.eobs[i];
+                }
+
+                if (tteob == 0)
+                {
+                    rate2 -= (rate_y + rate_uv);
+                    //for best_yrd calculation
+                    rate_uv = 0;
+
+                    // Back out no skip flag costing and add in skip flag costing
+                    if (cpi->prob_skip_false)
+                    {
+                        int prob_skip_cost;
+
+                        prob_skip_cost = vp8_cost_bit(cpi->prob_skip_false, 1);
+                        prob_skip_cost -= vp8_cost_bit(cpi->prob_skip_false, 0);
+                        rate2 += prob_skip_cost;
+                        other_cost += prob_skip_cost;
+                    }
+                }
+            }
+            // Calculate the final RD estimate for this mode
+            this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
+        }
+
+        VALGRIND_CHECK_VALUE_IS_DEFINED(rate2);
+        // Keep record of best intra distortion
+        if (x->e_mbd.mode_info_context->mbmi.ref_frame == INTRA_FRAME)
+        {
+            *returnintra = distortion2 ;
+        }
+
+        // Did this mode help.. i.i is it the new best mode
+        {
+            if (this_mode <= B_PRED)
+            {
+                x->e_mbd.mode_info_context->mbmi.uv_mode = uv_intra_mode;
+                /* required for left and above block mv */
+                x->e_mbd.mode_info_context->mbmi.mv.as_int = 0;
+            }
+
+            other_cost +=
+            x->ref_frame_cost[x->e_mbd.mode_info_context->mbmi.ref_frame];
+
+            /* Calculate the final y RD estimate for this mode */
+            best_yrd = RDCOST(x->rdmult, x->rddiv, (rate2-rate_uv-other_cost),
+                              (distortion2-distortion_uv));
+
+            VALGRIND_CHECK_VALUE_IS_DEFINED(rate2);
+            *returnrate = rate2;
+            *returndistortion = distortion2;
+            best_rd = this_rd;
+            vpx_memcpy(&best_mbmode, &x->e_mbd.mode_info_context->mbmi, sizeof(MB_MODE_INFO));
+            vpx_memcpy(&best_partition, x->partition_info, sizeof(PARTITION_INFO));
+
+            if ((this_mode == B_PRED) || (this_mode == SPLITMV))
+                for (i = 0; i < 16; i++)
+                {
+                    best_bmodes[i] = x->e_mbd.block[i].bmi;
+                }
+        }
+    }
+
+    VALGRIND_CHECK_VALUE_IS_DEFINED(*returnrate);
+    VALGRIND_CHECK_VALUE_IS_DEFINED(*returndistortion);
+    VALGRIND_CHECK_VALUE_IS_DEFINED(*returnintra);
+
+    if (cpi->is_src_frame_alt_ref &&
+        (best_mbmode.mode != ZEROMV || best_mbmode.ref_frame != ALTREF_FRAME))
+    {
+        x->e_mbd.mode_info_context->mbmi.mode = ZEROMV;
+        x->e_mbd.mode_info_context->mbmi.ref_frame = ALTREF_FRAME;
+        x->e_mbd.mode_info_context->mbmi.mv.as_int = 0;
+        x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
+        x->e_mbd.mode_info_context->mbmi.mb_skip_coeff =
+                                        (cpi->common.mb_no_coeff_skip);
+        x->e_mbd.mode_info_context->mbmi.partitioning = 0;
+
+        return;
+    }
+
+
+    // macroblock modes
+    vpx_memcpy(&x->e_mbd.mode_info_context->mbmi, &best_mbmode, sizeof(MB_MODE_INFO));
+
+    if (best_mbmode.mode == B_PRED)
+    {
+        for (i = 0; i < 16; i++)
+            xd->mode_info_context->bmi[i].as_mode = best_bmodes[i].as_mode;
+    }
+
+    if (best_mbmode.mode == SPLITMV)
+    {
+        for (i = 0; i < 16; i++)
+            xd->mode_info_context->bmi[i].mv.as_int = best_bmodes[i].mv.as_int;
+
+        vpx_memcpy(x->partition_info, &best_partition, sizeof(PARTITION_INFO));
+
+        x->e_mbd.mode_info_context->mbmi.mv.as_int =
+                                      x->partition_info->bmi[15].mv.as_int;
+    }
+
+    if (sign_bias
+        != cpi->common.ref_frame_sign_bias[xd->mode_info_context->mbmi.ref_frame])
+        best_ref_mv.as_int = best_ref_mv_sb[!sign_bias].as_int;
+
+    rd_update_mvcount(cpi, x, &best_ref_mv);
+}
+#endif
+
 
 void vp8_rd_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
                             int recon_uvoffset, int *returnrate,

vp8/vp8_cx_iface.c

@@ -77,6 +77,18 @@ static const struct extraconfig_map extracfg_map[] =
     }
 };
 
+
+struct cx_data_iter
+{
+    struct vpx_codec_cx_pkt  pkt;
+    int                      frame_out;
+    int                      pkt_list_done;
+    vpx_codec_iter_t         pkt_list_iter;
+    int                      mode_info_done;
+    int                      mode_info_row;
+};
+
+
 struct vpx_codec_alg_priv
 {
     vpx_codec_priv_t        base;
@@ -92,6 +104,7 @@ struct vpx_codec_alg_priv
     vpx_codec_pkt_list_decl(64) pkt_list;              // changed to accomendate the maximum number of lagged frames allowed
     int                         deprecated_mode;
     unsigned int                fixed_kf_cntr;
+    struct cx_data_iter         cx_data_iter;
 };
 
 
@@ -952,7 +965,45 @@ static vpx_codec_err_t vp8e_encode(vpx_codec_alg_priv_t  *ctx,
 static const vpx_codec_cx_pkt_t *vp8e_get_cxdata(vpx_codec_alg_priv_t  *ctx,
         vpx_codec_iter_t      *iter)
 {
-    return vpx_codec_pkt_list_get(&ctx->pkt_list.head, iter);
+    if(!*iter)
+    {
+        memset(&ctx->cx_data_iter, 0, sizeof(ctx->cx_data_iter));
+        *iter = &ctx->cx_data_iter;
+    }
+    if(!ctx->cx_data_iter.pkt_list_done)
+    {
+        const vpx_codec_cx_pkt_t *pkt;
+
+        pkt = vpx_codec_pkt_list_get(&ctx->pkt_list.head,
+                                     &ctx->cx_data_iter.pkt_list_iter);
+        if(pkt)
+        {
+            ctx->cx_data_iter.frame_out = 1;
+            return pkt;
+        }
+        ctx->cx_data_iter.pkt_list_done = 1;
+    }
+    if(!ctx->cx_data_iter.frame_out)
+        return NULL;
+    if(!ctx->cx_data_iter.mode_info_done)
+    {
+        vpx_codec_cx_pkt_t *pkt = &ctx->cx_data_iter.pkt;
+
+        if(ctx->cx_data_iter.mode_info_row < ctx->cpi->common.mb_rows)
+        {
+            pkt->kind = VPX_CODEC_CUSTOM_PKT;
+            pkt->data.raw.buf = ctx->cpi->common.mi
+                                + ctx->cpi->common.mode_info_stride
+                                * ctx->cx_data_iter.mode_info_row;
+            pkt->data.raw.sz = sizeof(MODE_INFO) * ctx->cpi->common.mb_cols;
+
+            ctx->cx_data_iter.mode_info_row++;
+            return pkt;
+        }
+        else
+            ctx->cx_data_iter.mode_info_done = 1;
+    }
+    return NULL;
 }
 
 static vpx_codec_err_t vp8e_set_reference(vpx_codec_alg_priv_t *ctx,
@@ -1168,6 +1219,38 @@ static vpx_codec_err_t vp8e_set_scalemode(vpx_codec_alg_priv_t *ctx,
 }
 
 
+static vpx_codec_err_t set_modeinfo(vpx_codec_alg_priv_t *ctx,
+        int ctr_id,
+        va_list args)
+{
+    vpx_fixed_buf_t *data =  va_arg(args, vpx_fixed_buf_t *);
+
+    ctx->cpi->external_modeinfo = data ? data->buf : NULL;
+    return VPX_CODEC_OK;
+}
+
+
+static vpx_codec_err_t vp8_get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
+                                                int ctrl_id,
+                                                va_list args)
+{
+    int *update_info = va_arg(args, int *);
+    VP8_COMP *pbi = ctx->cpi;
+
+    if (update_info)
+    {
+        *update_info = pbi->common.refresh_alt_ref_frame * (int) VP8_ALTR_FRAME
+            + pbi->common.refresh_golden_frame * (int) VP8_GOLD_FRAME
+            + pbi->common.refresh_last_frame * (int) VP8_LAST_FRAME
+            + (pbi->common.copy_buffer_to_gf << 3)
+            + (pbi->common.copy_buffer_to_arf << 5);
+
+        return VPX_CODEC_OK;
+    }
+    else
+        return VPX_CODEC_INVALID_PARAM;
+}
+
 static vpx_codec_ctrl_fn_map_t vp8e_ctf_maps[] =
 {
     {VP8_SET_REFERENCE,                 vp8e_set_reference},
@@ -1194,6 +1277,8 @@ static vpx_codec_ctrl_fn_map_t vp8e_ctf_maps[] =
     {VP8E_SET_TUNING,                   set_param},
     {VP8E_SET_CQ_LEVEL,                 set_param},
     {VP8E_SET_MAX_INTRA_BITRATE_PCT,    set_param},
+    {VP8E_SET_MODEINFO,                 set_modeinfo},
+    {VP8E_GET_LAST_REF_UPDATES,         vp8_get_last_ref_updates},
     { -1, NULL},
 };
 

vp8/vp8_dx_iface.c

@@ -70,6 +70,7 @@ struct vpx_codec_alg_priv
     vpx_image_t             img;
     int                     img_setup;
     int                     img_avail;
+    vpx_fixed_buf_t         mode_info;
 };
 
 static unsigned long vp8_priv_sz(const vpx_codec_dec_cfg_t *si, vpx_codec_flags_t flags)
@@ -692,7 +693,9 @@ static vpx_codec_err_t vp8_get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
     {
         *update_info = pbi->common.refresh_alt_ref_frame * (int) VP8_ALTR_FRAME
             + pbi->common.refresh_golden_frame * (int) VP8_GOLD_FRAME
-            + pbi->common.refresh_last_frame * (int) VP8_LAST_FRAME;
+            + pbi->common.refresh_last_frame * (int) VP8_LAST_FRAME
+            + (pbi->common.copy_buffer_to_gf << 3)
+            + (pbi->common.copy_buffer_to_arf << 5);
 
         return VPX_CODEC_OK;
     }
@@ -741,6 +744,43 @@ static vpx_codec_err_t vp8_get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
 
 }
 
+static vpx_codec_err_t get_mode_info(vpx_codec_alg_priv_t *ctx,
+                                     int ctrl_id,
+                                     va_list args)
+{
+    vpx_fixed_buf_t **data =  va_arg(args, vpx_fixed_buf_t **);
+    VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
+    size_t mi_sz = sizeof(MODE_INFO)*pbi->common.mb_rows * pbi->common.mb_cols;
+    char *buf;
+    size_t buf_stride;
+    int i;
+    MODE_INFO *mi;
+
+    if(data)
+    {
+        if(ctx->mode_info.sz != mi_sz)
+        {
+            free(ctx->mode_info.buf);
+            ctx->mode_info.buf = malloc(mi_sz);
+            ctx->mode_info.sz = mi_sz;
+        }
+
+        mi = pbi->common.mi;
+        buf = ctx->mode_info.buf;
+        buf_stride = pbi->common.mb_cols * sizeof(MODE_INFO);
+        for(i=0; i<pbi->common.mb_rows; i++)
+        {
+            memcpy(buf, mi, buf_stride);
+            buf += buf_stride;
+            mi += pbi->common.mode_info_stride;
+        }
+        *data = &ctx->mode_info;
+        return VPX_CODEC_OK;
+    }
+    else
+        return VPX_CODEC_INVALID_PARAM;
+}
+
 vpx_codec_ctrl_fn_map_t vp8_ctf_maps[] =
 {
     {VP8_SET_REFERENCE,             vp8_set_reference},
@@ -753,6 +793,7 @@ vpx_codec_ctrl_fn_map_t vp8_ctf_maps[] =
     {VP8D_GET_LAST_REF_UPDATES,     vp8_get_last_ref_updates},
     {VP8D_GET_FRAME_CORRUPTED,      vp8_get_frame_corrupted},
     {VP8D_GET_LAST_REF_USED,        vp8_get_last_ref_frame},
+    {VP8D_GET_MODE_INFO,            get_mode_info},
     { -1, NULL},
 };
 

vpx/vp8cx.h

@@ -178,6 +178,10 @@ enum vp8e_enc_control_id
      *
      */
     VP8E_SET_MAX_INTRA_BITRATE_PCT,
+
+    /*!\brief Mode/mv data */
+    VP8E_SET_MODEINFO,
+    VP8E_GET_LAST_REF_UPDATES
 };
 
 /*!\brief vpx 1-D scaling mode
@@ -311,6 +315,8 @@ VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64,  int *)
 
 VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTRA_BITRATE_PCT, unsigned int)
 
+VPX_CTRL_USE_TYPE(VP8E_SET_MODEINFO, vpx_fixed_buf_t *)
+VPX_CTRL_USE_TYPE(VP8E_GET_LAST_REF_UPDATES, int *)
 
 /*! @} - end defgroup vp8_encoder */
 #include "vpx_codec_impl_bottom.h"

vpx/vp8dx.h

@@ -60,6 +60,8 @@ enum vp8_dec_control_id
      */
     VP8D_GET_LAST_REF_USED,
 
+    VP8D_GET_MODE_INFO,
+
     VP8_DECODER_CTRL_ID_MAX
 } ;
 
@@ -75,6 +77,7 @@ enum vp8_dec_control_id
 VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_UPDATES,   int *)
 VPX_CTRL_USE_TYPE(VP8D_GET_FRAME_CORRUPTED,    int *)
 VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_USED,      int *)
+VPX_CTRL_USE_TYPE(VP8D_GET_MODE_INFO,          vpx_fixed_buf_t **)
 
 /*! @} - end defgroup vp8_decoder */
 

vpx/vpx_codec.h

@@ -134,6 +134,17 @@ extern "C" {
     vpx_codec_err_t;
 
 
+    /*!\brief Generic fixed size buffer structure
+     *
+     * This structure is able to hold a reference to any fixed size buffer.
+     */
+    typedef struct vpx_fixed_buf
+    {
+        void          *buf; /**< Pointer to the data */
+        size_t         sz;  /**< Length of the buffer, in chars */
+    } vpx_fixed_buf_t; /**< alias for struct vpx_fixed_buf */
+
+
     /*! \brief Codec capabilities bitfield
      *
      *  Each codec advertises the capabilities it supports as part of its

vpx/vpx_encoder.h

@@ -77,17 +77,6 @@ extern "C" {
                                                      partition at a time. */
 
 
-    /*!\brief Generic fixed size buffer structure
-     *
-     * This structure is able to hold a reference to any fixed size buffer.
-     */
-    typedef struct vpx_fixed_buf
-    {
-        void          *buf; /**< Pointer to the data */
-        size_t         sz;  /**< Length of the buffer, in chars */
-    } vpx_fixed_buf_t; /**< alias for struct vpx_fixed_buf */
-
-
     /*!\brief Time Stamp Type
      *
      * An integer, which when multiplied by the stream's time base, provides

vpxenc.c

@@ -39,6 +39,10 @@
 #include "y4minput.h"
 #include "libmkv/EbmlWriter.h"
 #include "libmkv/EbmlIDs.h"
+#include "third_party/libyuv/include/libyuv/scale.h"
+#include "nestegg/include/nestegg/nestegg.h"
+#include "vpx/vpx_decoder.h"
+#include "vpx/vp8dx.h"
 
 /* Need special handling of these functions on Windows */
 #if defined(_MSC_VER)
@@ -289,7 +293,8 @@ enum video_file_type
 {
     FILE_TYPE_RAW,
     FILE_TYPE_IVF,
-    FILE_TYPE_Y4M
+    FILE_TYPE_Y4M,
+    FILE_TYPE_WEBM
 };
 
 struct detect_buffer {
@@ -299,6 +304,151 @@ struct detect_buffer {
 };
 
 
+struct webm_ctx
+{
+    FILE           *infile;
+    nestegg        *nestegg_ctx;
+    nestegg_packet *pkt;
+    unsigned int    chunk;
+    unsigned int    chunks;
+    unsigned int    video_track;
+    vpx_codec_ctx_t decoder;
+    unsigned char  *buf;
+    size_t          buf_sz;
+};
+
+static int
+nestegg_read_cb(void *buffer, size_t length, void *userdata)
+{
+    FILE *f = userdata;
+
+    if(fread(buffer, 1, length, f) < length)
+    {
+        if (ferror(f))
+            return -1;
+        if (feof(f))
+            return 0;
+    }
+    return 1;
+}
+
+
+static int
+nestegg_seek_cb(int64_t offset, int whence, void * userdata)
+{
+    switch(whence) {
+        case NESTEGG_SEEK_SET: whence = SEEK_SET; break;
+        case NESTEGG_SEEK_CUR: whence = SEEK_CUR; break;
+        case NESTEGG_SEEK_END: whence = SEEK_END; break;
+    };
+    return fseek(userdata, offset, whence)? -1 : 0;
+}
+
+
+static int64_t
+nestegg_tell_cb(void * userdata)
+{
+    return ftell(userdata);
+}
+
+
+static int
+webm_guess_framerate(struct webm_ctx  *input,
+                     unsigned int     *fps_den,
+                     unsigned int     *fps_num)
+{
+    unsigned int i;
+    uint64_t     tstamp=0;
+
+    /* Guess the framerate. Read up to 1 second, or 50 video packets,
+     * whichever comes first.
+     */
+    for(i=0; tstamp < 1000000000 && i < 50;)
+    {
+        nestegg_packet * pkt;
+        unsigned int track;
+
+        if(nestegg_read_packet(input->nestegg_ctx, &pkt) <= 0)
+            break;
+
+        nestegg_packet_track(pkt, &track);
+        if(track == input->video_track)
+        {
+            nestegg_packet_tstamp(pkt, &tstamp);
+            i++;
+        }
+
+        nestegg_free_packet(pkt);
+    }
+
+    if(nestegg_track_seek(input->nestegg_ctx, input->video_track, 0))
+        goto fail;
+
+    *fps_num = (i - 1) * 1000000;
+    *fps_den = tstamp / 1000;
+    return 0;
+fail:
+    nestegg_destroy(input->nestegg_ctx);
+    input->nestegg_ctx = NULL;
+    rewind(input->infile);
+    return 1;
+}
+
+
+static int
+file_is_webm(struct webm_ctx  *input,
+             unsigned int     *width,
+             unsigned int     *height,
+             unsigned int     *fps_den,
+             unsigned int     *fps_num)
+{
+    unsigned int i, n;
+    int          track_type = -1;
+
+    nestegg_io io = {nestegg_read_cb, nestegg_seek_cb, nestegg_tell_cb,
+                     input->infile};
+    nestegg_video_params params;
+
+    if(nestegg_init(&input->nestegg_ctx, io, NULL))
+        goto fail;
+
+    if(nestegg_track_count(input->nestegg_ctx, &n))
+        goto fail;
+
+    for(i=0; i<n; i++)
+    {
+        track_type = nestegg_track_type(input->nestegg_ctx, i);
+
+        if(track_type == NESTEGG_TRACK_VIDEO)
+            break;
+        else if(track_type < 0)
+            goto fail;
+    }
+
+    if(nestegg_track_codec_id(input->nestegg_ctx, i) != NESTEGG_CODEC_VP8)
+    {
+        fprintf(stderr, "Not VP8 video, quitting.\n");
+        exit(1);
+    }
+
+    input->video_track = i;
+
+    if(nestegg_track_video_params(input->nestegg_ctx, i, &params))
+        goto fail;
+
+    if(webm_guess_framerate(input, fps_den, fps_num))
+        goto fail;
+
+    *width = params.width;
+    *height = params.height;
+    return 1;
+fail:
+    input->nestegg_ctx = NULL;
+    rewind(input->infile);
+    return 0;
+}
+
+
 struct input_state
 {
     char                 *fn;
@@ -310,6 +460,7 @@ struct input_state
     unsigned int          h;
     struct vpx_rational   framerate;
     int                   use_i420;
+    struct webm_ctx       webm;
 };
 
 
@@ -323,6 +474,53 @@ static int read_frame(struct input_state *input, vpx_image_t *img)
     int plane = 0;
     int shortread = 0;
 
+    if (file_type == FILE_TYPE_WEBM)
+    {
+        struct webm_ctx *webm = &input->webm;
+        unsigned int p,r;
+        vpx_image_t *src;
+        vpx_codec_iter_t iter = NULL;
+
+        if(webm->chunk >= webm->chunks)
+        {
+            unsigned int track;
+
+            do
+            {
+                /* End of this packet, get another. */
+                if(webm->pkt)
+                    nestegg_free_packet(webm->pkt);
+
+                if(nestegg_read_packet(webm->nestegg_ctx, &webm->pkt) <= 0
+                   || nestegg_packet_track(webm->pkt, &track))
+                    return 0;
+
+            } while(track != webm->video_track);
+
+            if(nestegg_packet_count(webm->pkt, &webm->chunks))
+                return 0;
+            webm->chunk = 0;
+        }
+
+        if(nestegg_packet_data(webm->pkt, webm->chunk,
+                               &webm->buf, &webm->buf_sz))
+            return 0;
+
+        webm->chunk++;
+
+        if (vpx_codec_decode(&webm->decoder, webm->buf, webm->buf_sz, NULL, 0))
+            fatal("decode failed");
+
+        if ((src = vpx_codec_get_frame(&webm->decoder, &iter)))
+            for(p=0; p<3; p++)
+                for(r=0; r<img->d_h >> (p>0); r++)
+                    memcpy(img->planes[p] + r * img->stride[p],
+                           src->planes[p] + r * src->stride[p],
+                           img->d_w >> (p>0));
+
+        return !!src;
+    }
+    else
     if (file_type == FILE_TYPE_Y4M)
     {
         if (y4m_input_fetch_frame(y4m, f, img) < 1)
@@ -984,12 +1182,17 @@ static const arg_def_t q_hist_n         = ARG_DEF(NULL, "q-hist", 1,
         "Show quantizer histogram (n-buckets)");
 static const arg_def_t rate_hist_n         = ARG_DEF(NULL, "rate-hist", 1,
         "Show rate histogram (n-buckets)");
+static const arg_def_t read_modemv_arg  = ARG_DEF(NULL, "read-modemv", 1,
+        "Read modes/mvs");
+static const arg_def_t write_modemv_arg  = ARG_DEF(NULL, "write-modemv", 0,
+        "Write modes/mvs");
 static const arg_def_t *main_args[] =
 {
     &debugmode,
     &outputfile, &codecarg, &passes, &pass_arg, &fpf_name, &limit, &deadline,
     &best_dl, &good_dl, &rt_dl,
     &verbosearg, &psnrarg, &use_ivf, &q_hist_n, &rate_hist_n,
+    &read_modemv_arg, &write_modemv_arg,
     NULL
 };
 
@@ -1495,6 +1698,9 @@ struct global_config
     int                       debug;
     int                       show_q_hist_buckets;
     int                       show_rate_hist_buckets;
+    int                       read_modemv;
+    int                       write_modemv;
+    const char               *modemv_file;
 };
 
 
@@ -1530,6 +1736,7 @@ struct stream_state
     uint64_t                  cx_time;
     size_t                    nbytes;
     stats_io_t                stats;
+    struct vpx_image         *img;
 };
 
 
@@ -1609,6 +1816,13 @@ static void parse_global_config(struct global_config *global, char **argv)
             global->show_q_hist_buckets = arg_parse_uint(&arg);
         else if (arg_match(&arg, &rate_hist_n, argi))
             global->show_rate_hist_buckets = arg_parse_uint(&arg);
+        else if (arg_match(&arg, &read_modemv_arg, argi))
+        {
+            global->read_modemv = 1;
+            global->modemv_file = arg.val;
+        }
+        else if (arg_match(&arg, &write_modemv_arg, argi))
+            global->write_modemv = 1;
         else
             argj++;
     }
@@ -1639,6 +1853,21 @@ void open_input_file(struct input_state *input)
     if (!input->file)
         fatal("Failed to open input file");
 
+    if(strstr(input->fn, ".webm"))
+    {
+        input->webm.infile = input->file;
+        input->file_type = FILE_TYPE_WEBM;
+        if(!file_is_webm(&input->webm,
+                         &input->w, &input->h,
+                         &input->framerate.den,
+                         &input->framerate.num))
+            fatal("Couldn't open webm file");
+        if (vpx_codec_dec_init(&input->webm.decoder,
+                               &vpx_codec_vp8_dx_algo, NULL, 0))
+            fatal("Couldn't init decoder");
+        return;
+    }
+
     /* For RAW input sources, these bytes will applied on the first frame
      *  in read_frame().
      */
@@ -1943,11 +2172,17 @@ static void set_stream_dimensions(struct stream_state *stream,
                                   unsigned int w,
                                   unsigned int h)
 {
-    if ((stream->config.cfg.g_w && stream->config.cfg.g_w != w)
-        ||(stream->config.cfg.g_h && stream->config.cfg.g_h != h))
-        fatal("Stream %d: Resizing not yet supported", stream->index);
+    if(!stream->config.cfg.g_w)
+    {
+        if(!stream->config.cfg.g_h)
             stream->config.cfg.g_w = w;
-    stream->config.cfg.g_h = h;
+        else
+            stream->config.cfg.g_w = w * stream->config.cfg.g_h / h;
+    }
+    if(!stream->config.cfg.g_h)
+    {
+        stream->config.cfg.g_h = h * stream->config.cfg.g_w / w;
+    }
 }
 
 
@@ -2117,6 +2352,26 @@ static void encode_frame(struct stream_state  *stream,
     next_frame_start = (cfg->g_timebase.den * (int64_t)(frames_in)
                         * global->framerate.den)
                         / cfg->g_timebase.num / global->framerate.num;
+
+    /* Scale if necessary */
+    if(img && (img->d_w != cfg->g_w || img->d_h != cfg->g_h))
+    {
+        if(!stream->img)
+            stream->img = vpx_img_alloc(NULL, VPX_IMG_FMT_I420,
+                                        cfg->g_w, cfg->g_h, 16);
+        I420Scale(img->planes[PLANE_Y], img->stride[PLANE_Y],
+                  img->planes[PLANE_U], img->stride[PLANE_U],
+                  img->planes[PLANE_V], img->stride[PLANE_V],
+                  img->d_w, img->d_h,
+                  stream->img->planes[PLANE_Y], stream->img->stride[PLANE_Y],
+                  stream->img->planes[PLANE_U], stream->img->stride[PLANE_U],
+                  stream->img->planes[PLANE_V], stream->img->stride[PLANE_V],
+                  stream->img->d_w, stream->img->d_h,
+                  kFilterBox);
+
+        img = stream->img;
+    }
+
     vpx_usec_timer_start(&timer);
     vpx_codec_encode(&stream->encoder, img, frame_start,
                      next_frame_start - frame_start,
@@ -2211,6 +2466,128 @@ static void get_cx_data(struct stream_state  *stream,
 }
 
 
+struct link_record
+{
+    uint32_t sz;
+    uint16_t w;
+    uint16_t h;
+    int      refs_updated;
+};
+
+static void
+write_multistream_file(struct stream_state  *streams,
+                       struct global_config *global,
+                       int                  *got_data)
+{
+    const vpx_codec_cx_pkt_t *pkt;
+    vpx_codec_cx_pkt_t outpkt = {0};
+    int newsz;
+
+    FOREACH_STREAM({
+    vpx_codec_iter_t iter = NULL;
+    const struct vpx_codec_enc_cfg *cfg = &stream->config.cfg;
+    struct link_record link = {0};
+
+    vpx_codec_control(&stream->encoder, VP8E_GET_LAST_REF_UPDATES, &link.refs_updated);
+    ctx_exit_on_error(&stream->encoder, "Failed to get refs");
+
+    while ((pkt = vpx_codec_get_cx_data(&stream->encoder, &iter)))
+    {
+        *got_data = 1;
+
+        switch (pkt->kind)
+        {
+        case VPX_CODEC_CX_FRAME_PKT:
+            stream->frames_out++;
+            fprintf(stderr, " %6luF",
+                    (unsigned long)pkt->data.frame.sz);
+
+            update_rate_histogram(&stream->rate_hist, cfg, pkt);
+            stream->nbytes += pkt->data.raw.sz;
+
+            if(stream == streams)
+            {
+                outpkt = *pkt;
+                outpkt.data.raw.buf = malloc(outpkt.data.raw.sz);
+                memcpy(outpkt.data.raw.buf, pkt->data.raw.buf, pkt->data.raw.sz);
+            }
+            break;
+        case VPX_CODEC_STATS_PKT:
+            stream->frames_out++;
+            fprintf(stderr, " %6luS",
+                   (unsigned long)pkt->data.twopass_stats.sz);
+            stats_write(&stream->stats,
+                        pkt->data.twopass_stats.buf,
+                        pkt->data.twopass_stats.sz);
+            stream->nbytes += pkt->data.raw.sz;
+            break;
+        case VPX_CODEC_PSNR_PKT:
+
+            if (global->show_psnr)
+            {
+                int i;
+
+                stream->psnr_sse_total += pkt->data.psnr.sse[0];
+                stream->psnr_samples_total += pkt->data.psnr.samples[0];
+                for (i = 0; i < 4; i++)
+                {
+                    fprintf(stderr, "%.3lf ", pkt->data.psnr.psnr[i]);
+                    stream->psnr_totals[i] += pkt->data.psnr.psnr[i];
+                }
+                stream->psnr_count++;
+            }
+
+            break;
+        default:
+            /* Append other data packets to outpkt */
+            newsz = outpkt.data.raw.sz + pkt->data.raw.sz;
+            outpkt.data.raw.buf = realloc(outpkt.data.raw.buf, newsz);
+            memcpy((char*)outpkt.data.raw.buf + outpkt.data.raw.sz,
+                   pkt->data.raw.buf, pkt->data.raw.sz);
+            outpkt.data.raw.sz = newsz;
+            link.sz += pkt->data.raw.sz;
+            break;
+        }
+    }
+
+    if(link.sz)
+    {
+        link.w = cfg->g_w;
+        link.h = cfg->g_h;
+        link.sz |= (stream == streams)?0:(1<<31);
+        newsz = outpkt.data.raw.sz + sizeof(link);
+        outpkt.data.raw.buf = realloc(outpkt.data.raw.buf, newsz);
+        memcpy((char*)outpkt.data.raw.buf + outpkt.data.raw.sz,
+               &link, sizeof(link));
+        outpkt.data.raw.sz = newsz;
+    }
+
+    });
+    if(outpkt.data.raw.sz)
+    {
+        const struct vpx_codec_enc_cfg *cfg = &streams->config.cfg;
+        struct stream_state  *stream = streams;
+        const vpx_codec_cx_pkt_t *pkt = &outpkt;
+
+        if(stream->config.write_webm)
+        {
+            /* Update the hash */
+            if(!stream->ebml.debug)
+                stream->hash = murmur(pkt->data.frame.buf,
+                                      pkt->data.frame.sz, stream->hash);
+
+            write_webm_block(&streams->ebml, cfg, pkt);
+        }
+        else
+        {
+            write_ivf_frame_header(stream->file, pkt);
+            if(fwrite(pkt->data.frame.buf, 1,
+                      pkt->data.frame.sz, stream->file));
+        }
+        free(outpkt.data.raw.buf);
+    }
+}
+
 static void show_psnr(struct stream_state  *stream)
 {
     int i;
@@ -2238,13 +2615,71 @@ float usec_to_fps(uint64_t usec, unsigned int frames)
 }
 
 
+static void set_modeinfo(struct stream_state *stream,
+                         struct input_state  *input)
+{
+    struct webm_ctx     *webm = &input->webm;
+    unsigned char *ptr;
+    struct link_record link;
+    int again;
+    int refs=0;
+    int mi_set = 0;
+
+    vpx_codec_control(&stream->encoder, VP8E_SET_MODEINFO, NULL);
+    ptr = webm->buf + webm->buf_sz;
+    do
+    {
+        ptr -= sizeof(link);
+        memcpy(&link, ptr, sizeof(link));
+        again = link.sz >> 31;
+        link.sz &= ~(1<<31);
+        ptr -= link.sz;
+        if(link.w == stream->config.cfg.g_w
+           && link.h == stream->config.cfg.g_h)
+        {
+            vpx_fixed_buf_t modeinfo;
+
+            modeinfo.buf = ptr;
+            modeinfo.sz = link.sz;
+            vpx_codec_control(&stream->encoder, VP8E_SET_MODEINFO, &modeinfo);
+            vpx_codec_control(&stream->encoder, VP8E_UPD_REFERENCE, link.refs_updated);
+            ctx_exit_on_error(&stream->encoder, "Failed to set refs");
+            mi_set = 1;
+            break;
+        }
+        if((link.w|link.sz)&0xF)
+            break;
+        if(link.w > 16383 || link.h > 16383)
+            break;
+    } while(again);
+
+    if(!mi_set
+       && stream->config.cfg.g_w == input->w
+       && stream->config.cfg.g_h == input->h)
+    {
+        vpx_fixed_buf_t *modeinfo;
+        int refs_updated;
+
+        vpx_codec_control(&webm->decoder, VP8D_GET_MODE_INFO, &modeinfo);
+        ctx_exit_on_error(&webm->decoder, "Failed to get mode info");
+        vpx_codec_control(&stream->encoder, VP8E_SET_MODEINFO, modeinfo);
+        ctx_exit_on_error(&webm->decoder, "Failed to set mode info");
+
+        vpx_codec_control(&webm->decoder, VP8D_GET_LAST_REF_UPDATES, &refs_updated);
+        ctx_exit_on_error(&webm->decoder, "Failed to get ref updates");
+        vpx_codec_control(&stream->encoder, VP8E_UPD_REFERENCE, refs_updated);
+        ctx_exit_on_error(&stream->encoder, "Failed to set ref updates");
+    }
+}
+
 int main(int argc, const char **argv_)
 {
     int                    pass;
-    vpx_image_t            raw;
+    vpx_image_t            raw, junk;
     int                    frame_avail, got_data;
 
     struct input_state       input = {0};
+    struct input_state       modemv_input = {0};
     struct global_config     global;
     struct stream_state     *streams = NULL;
     char                   **argv, **argi;
@@ -2300,6 +2735,12 @@ int main(int argc, const char **argv_)
         int frames_in = 0;
 
         open_input_file(&input);
+        if(global.read_modemv)
+        {
+            modemv_input = input;
+            modemv_input.fn = global.modemv_file;
+            open_input_file(&modemv_input);
+        }
 
         /* If the input file doesn't specify its w/h (raw files), try to get
          * the data from the first stream's configuration.
@@ -2315,6 +2756,9 @@ int main(int argc, const char **argv_)
             });
 
         /* Update stream configurations from the input file's parameters */
+        if(!input.w || !input.h)
+            fatal("Specify stream dimensions with --width (-w) "
+                  " and --height (-h)");
         FOREACH_STREAM(set_stream_dimensions(stream, input.w, input.h));
         FOREACH_STREAM(validate_stream_config(stream));
 
@@ -2356,6 +2800,11 @@ int main(int argc, const char **argv_)
                                                &global.framerate));
         }
 
+        if(global.read_modemv)
+            vpx_img_alloc(&junk,
+                          input.use_i420 ? VPX_IMG_FMT_I420
+                                         : VPX_IMG_FMT_YV12,
+                          input.w, input.h, 1);
         FOREACH_STREAM(open_output_file(stream, &global));
         FOREACH_STREAM(setup_pass(stream, &global, pass));
         FOREACH_STREAM(initialize_encoder(stream, &global));
@@ -2370,6 +2819,8 @@ int main(int argc, const char **argv_)
             if (!global.limit || frames_in < global.limit)
             {
                 frame_avail = read_frame(&input, &raw);
+                if(global.read_modemv)
+                    read_frame(&modemv_input, &junk);
 
                 if (frame_avail)
                     frames_in++;
@@ -2391,6 +2842,10 @@ int main(int argc, const char **argv_)
             else
                 frame_avail = 0;
 
+            /* Update mode/mv info if available */
+            if(modemv_input.file_type == FILE_TYPE_WEBM && global.read_modemv)
+                FOREACH_STREAM(set_modeinfo(stream, &modemv_input));
+
             vpx_usec_timer_start(&timer);
             FOREACH_STREAM(encode_frame(stream, &global,
                                         frame_avail ? &raw : NULL,
@@ -2401,6 +2856,9 @@ int main(int argc, const char **argv_)
             FOREACH_STREAM(update_quantizer_histogram(stream));
 
             got_data = 0;
+            if(global.write_modemv)
+                write_multistream_file(streams, &global, &got_data);
+            else
                 FOREACH_STREAM(get_cx_data(stream, &global, &got_data));
 
             fflush(stdout);