Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / libavcodec / h264.c
index 17124c3..4906f92 100644 (file)
@@ -2,20 +2,20 @@
  * H.26L/H.264/AVC/JVT/14496-10/... decoder
  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -97,12 +97,9 @@ int ff_h264_check_intra4x4_pred_mode(H264Context *h){
     }
 
     return 0;
-} //FIXME cleanup like ff_h264_check_intra_pred_mode
+} //FIXME cleanup like check_intra_pred_mode
 
-/**
- * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
- */
-int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
+static int check_intra_pred_mode(H264Context *h, int mode, int is_chroma){
     MpegEncContext * const s = &h->s;
     static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
     static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
@@ -122,7 +119,7 @@ int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
 
     if((h->left_samples_available&0x8080) != 0x8080){
         mode= left[ mode ];
-        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
+        if(is_chroma && (h->left_samples_available&0x8080)){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
             mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
         }
         if(mode<0){
@@ -134,6 +131,23 @@ int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
     return mode;
 }
 
+/**
+ * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ */
+int ff_h264_check_intra16x16_pred_mode(H264Context *h, int mode)
+{
+    return check_intra_pred_mode(h, mode, 0);
+}
+
+/**
+ * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ */
+int ff_h264_check_intra_chroma_pred_mode(H264Context *h, int mode)
+{
+    return check_intra_pred_mode(h, mode, 1);
+}
+
+
 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
     int i, si, di;
     uint8_t *dst;
@@ -174,20 +188,28 @@ const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_l
         i-= RS;
     }
 
-    if(i>=length-1){ //no escaped 0
-        *dst_length= length;
-        *consumed= length+1; //+1 for the header
-        return src;
-    }
-
     bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
-    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
+    si=h->rbsp_buffer_size[bufidx];
+    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE+MAX_MBPAIR_SIZE);
     dst= h->rbsp_buffer[bufidx];
+    if(si != h->rbsp_buffer_size[bufidx])
+        memset(dst + length, 0, FF_INPUT_BUFFER_PADDING_SIZE+MAX_MBPAIR_SIZE);
 
     if (dst == NULL){
         return NULL;
     }
 
+    if(i>=length-1){ //no escaped 0
+        *dst_length= length;
+        *consumed= length+1; //+1 for the header
+        if(h->s.avctx->flags2 & CODEC_FLAG2_FAST){
+            return src;
+        }else{
+            memcpy(dst, src, length);
+            return dst;
+        }
+    }
+
 //printf("decoding esc\n");
     memcpy(dst, src, i);
     si=di=i;
@@ -706,7 +728,7 @@ prefetch_motion(H264Context *h, int list, int pixel_shift, int chroma_idc)
             s->dsp.prefetch(src[1]+off, s->linesize, 4);
             s->dsp.prefetch(src[2]+off, s->linesize, 4);
         }else{
-            off= ((mx>>1) << pixel_shift) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + (64 << pixel_shift);
+            off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (s->mb_x&7))*s->uvlinesize;
             s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
         }
     }
@@ -1028,30 +1050,39 @@ static av_cold void common_init(H264Context *h){
     s->height = s->avctx->height;
     s->codec_id= s->avctx->codec->id;
 
-    ff_h264dsp_init(&h->h264dsp, 8, 1);
-    ff_h264_pred_init(&h->hpc, s->codec_id, 8, 1);
+    s->avctx->bits_per_raw_sample = 8;
+    h->cur_chroma_format_idc = 1;
+
+    ff_h264dsp_init(&h->h264dsp,
+                    s->avctx->bits_per_raw_sample, h->cur_chroma_format_idc);
+    ff_h264_pred_init(&h->hpc, s->codec_id,
+                      s->avctx->bits_per_raw_sample, h->cur_chroma_format_idc);
 
     h->dequant_coeff_pps= -1;
     s->unrestricted_mv=1;
     s->decode=1; //FIXME
 
+    s->dsp.dct_bits = 16;
     dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
 
     memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
     memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
 }
 
-int ff_h264_decode_extradata(H264Context *h)
+int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
 {
     AVCodecContext *avctx = h->s.avctx;
 
-    if(avctx->extradata[0] == 1){
+    if(!buf || size <= 0)
+        return -1;
+
+    if(buf[0] == 1){
         int i, cnt, nalsize;
-        unsigned char *p = avctx->extradata;
+        const unsigned char *p = buf;
 
         h->is_avc = 1;
 
-        if(avctx->extradata_size < 7) {
+        if(size < 7) {
             av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
             return -1;
         }
@@ -1063,7 +1094,7 @@ int ff_h264_decode_extradata(H264Context *h)
         p += 6;
         for (i = 0; i < cnt; i++) {
             nalsize = AV_RB16(p) + 2;
-            if (p - avctx->extradata + nalsize > avctx->extradata_size)
+            if(nalsize > size - (p-buf))
                 return -1;
             if(decode_nal_units(h, p, nalsize) < 0) {
                 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
@@ -1075,7 +1106,7 @@ int ff_h264_decode_extradata(H264Context *h)
         cnt = *(p++); // Number of pps
         for (i = 0; i < cnt; i++) {
             nalsize = AV_RB16(p) + 2;
-            if (p - avctx->extradata + nalsize > avctx->extradata_size)
+            if(nalsize > size - (p-buf))
                 return -1;
             if (decode_nal_units(h, p, nalsize) < 0) {
                 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
@@ -1084,10 +1115,10 @@ int ff_h264_decode_extradata(H264Context *h)
             p += nalsize;
         }
         // Now store right nal length size, that will be use to parse all other nals
-        h->nal_length_size = (avctx->extradata[4] & 0x03) + 1;
+        h->nal_length_size = (buf[4] & 0x03) + 1;
     } else {
         h->is_avc = 0;
-        if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
+        if(decode_nal_units(h, buf, size) < 0)
             return -1;
     }
     return 0;
@@ -1131,7 +1162,7 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx){
     }
 
     if(avctx->extradata_size > 0 && avctx->extradata &&
-        ff_h264_decode_extradata(h))
+        ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size))
         return -1;
 
     if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
@@ -1255,6 +1286,7 @@ static int decode_update_thread_context(AVCodecContext *dst, const AVCodecContex
     copy_picture_range(h->delayed_pic, h1->delayed_pic, MAX_DELAYED_PIC_COUNT+2, s, s1);
 
     h->last_slice_type = h1->last_slice_type;
+    h->sync            = h1->sync;
 
     if(!s->current_picture_ptr) return 0;
 
@@ -1441,7 +1473,7 @@ static void decode_postinit(H264Context *h, int setup_finished){
     pics = 0;
     while(h->delayed_pic[pics]) pics++;
 
-    assert(pics <= MAX_DELAYED_PIC_COUNT);
+    av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
 
     h->delayed_pic[pics++] = cur;
     if (cur->f.reference == 0)
@@ -1486,6 +1518,10 @@ static void decode_postinit(H264Context *h, int setup_finished){
         av_log(s->avctx, AV_LOG_DEBUG, "no picture\n");
     }
 
+    if (h->next_output_pic && h->next_output_pic->sync) {
+        h->sync |= 2;
+    }
+
     if (setup_finished)
         ff_thread_finish_setup(s->avctx);
 }
@@ -1523,7 +1559,7 @@ static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y,
                             AV_COPY128(top_border+16, src_cb + 15*uvlinesize);
                             AV_COPY128(top_border+32, src_cr + 15*uvlinesize);
                         }
-                    } else if(chroma422) {
+                    } else if(chroma422){
                         if (pixel_shift) {
                             AV_COPY128(top_border+32, src_cb + 15*uvlinesize);
                             AV_COPY128(top_border+48, src_cr + 15*uvlinesize);
@@ -1898,8 +1934,8 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, i
     }
 
     if (!simple && IS_INTRA_PCM(mb_type)) {
+        const int bit_depth = h->sps.bit_depth_luma;
         if (pixel_shift) {
-            const int bit_depth = h->sps.bit_depth_luma;
             int j;
             GetBitContext gb;
             init_get_bits(&gb, (uint8_t*)h->mb, 384*bit_depth);
@@ -1913,14 +1949,9 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, i
                 if (!h->sps.chroma_format_idc) {
                     for (i = 0; i < block_h; i++) {
                         uint16_t *tmp_cb = (uint16_t*)(dest_cb + i*uvlinesize);
-                        for (j = 0; j < 8; j++) {
-                            tmp_cb[j] = 1 << (bit_depth - 1);
-                        }
-                    }
-                    for (i = 0; i < block_h; i++) {
                         uint16_t *tmp_cr = (uint16_t*)(dest_cr + i*uvlinesize);
                         for (j = 0; j < 8; j++) {
-                            tmp_cr[j] = 1 << (bit_depth - 1);
+                            tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
                         }
                     }
                 } else {
@@ -1942,12 +1973,12 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, i
             }
             if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
                 if (!h->sps.chroma_format_idc) {
-                    for (i = 0; i < block_h; i++) {
-                        memset(dest_cb + i*uvlinesize, 128, 8);
-                        memset(dest_cr + i*uvlinesize, 128, 8);
+                    for (i=0; i<8; i++) {
+                        memset(dest_cb + i*uvlinesize, 1 << (bit_depth - 1), 8);
+                        memset(dest_cr + i*uvlinesize, 1 << (bit_depth - 1), 8);
                     }
                 } else {
-                    for (i = 0; i < block_h; i++) {
+                    for (i=0; i<block_h; i++) {
                         memcpy(dest_cb + i*uvlinesize, h->mb + 128 + i*4,  8);
                         memcpy(dest_cr + i*uvlinesize, h->mb + 160 + i*4,  8);
                     }
@@ -2026,7 +2057,9 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, i
                     h->h264dsp.h264_idct_add8(dest, block_offset,
                                               h->mb, uvlinesize,
                                               h->non_zero_count_cache);
-                }else{
+                }
+#if CONFIG_SVQ3_DECODER
+                else{
                     h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16*16*1, h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
                     h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16*16*2, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
                     for(j=1; j<3; j++){
@@ -2038,6 +2071,7 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, i
                         }
                     }
                 }
+#endif
             }
         }
     }
@@ -2330,7 +2364,7 @@ static void idr(H264Context *h){
 static void flush_dpb(AVCodecContext *avctx){
     H264Context *h= avctx->priv_data;
     int i;
-    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
+    for(i=0; i<=MAX_DELAYED_PIC_COUNT; i++) {
         if(h->delayed_pic[i])
             h->delayed_pic[i]->f.reference = 0;
         h->delayed_pic[i]= NULL;
@@ -2343,6 +2377,8 @@ static void flush_dpb(AVCodecContext *avctx){
     h->s.first_field= 0;
     ff_h264_reset_sei(h);
     ff_mpeg_flush(avctx);
+    h->recovery_frame= -1;
+    h->sync= 0;
 }
 
 static int init_poc(H264Context *h){
@@ -2671,14 +2707,17 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
 
     if (s->context_initialized
         && (   s->width != s->avctx->width || s->height != s->avctx->height
+            || s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma
+            || h->cur_chroma_format_idc != h->sps.chroma_format_idc
             || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
         if(h != h0) {
-            av_log_missing_feature(s->avctx, "Width/height changing with threads is", 0);
+            av_log_missing_feature(s->avctx, "Width/height/bit depth/chroma idc changing with threads is", 0);
             return -1;   // width / height changed during parallelized decoding
         }
         free_tables(h, 0);
         flush_dpb(s->avctx);
         MPV_common_end(s);
+        h->list_count = 0;
     }
     if (!s->context_initialized) {
         if (h != h0) {
@@ -2690,8 +2729,27 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
         s->avctx->sample_aspect_ratio= h->sps.sar;
         av_assert0(s->avctx->sample_aspect_ratio.den);
 
+        if (s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
+            h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
+            if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10 &&
+                (h->sps.bit_depth_luma != 9 || !CHROMA422)) {
+                s->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
+                h->cur_chroma_format_idc = h->sps.chroma_format_idc;
+                h->pixel_shift = h->sps.bit_depth_luma > 8;
+
+                ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma, h->sps.chroma_format_idc);
+                ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma, h->sps.chroma_format_idc);
+                s->dsp.dct_bits = h->sps.bit_depth_luma > 8 ? 32 : 16;
+                dsputil_init(&s->dsp, s->avctx);
+            } else {
+                av_log(s->avctx, AV_LOG_DEBUG, "Unsupported bit depth: %d chroma_idc: %d\n",
+                       h->sps.bit_depth_luma, h->sps.chroma_format_idc);
+                return -1;
+            }
+        }
+
         if(h->sps.video_signal_type_present_flag){
-            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
+            s->avctx->color_range = h->sps.full_range>0 ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
             if(h->sps.colour_description_present_flag){
                 s->avctx->color_primaries = h->sps.color_primaries;
                 s->avctx->color_trc       = h->sps.color_trc;
@@ -2727,6 +2785,10 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
             default:
                 if (CHROMA444){
                     s->avctx->pix_fmt = s->avctx->color_range == AVCOL_RANGE_JPEG ? PIX_FMT_YUVJ444P : PIX_FMT_YUV444P;
+                    if (s->avctx->colorspace == AVCOL_SPC_RGB) {
+                       s->avctx->pix_fmt = PIX_FMT_GBR24P;
+                       av_log(h->s.avctx, AV_LOG_DEBUG, "Detected GBR colorspace.\n");
+                    }
                 } else if (CHROMA422) {
                     s->avctx->pix_fmt = s->avctx->color_range == AVCOL_RANGE_JPEG ? PIX_FMT_YUVJ422P : PIX_FMT_YUV422P;
                 }else{
@@ -2789,6 +2851,10 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     if(h->sps.frame_mbs_only_flag){
         s->picture_structure= PICT_FRAME;
     }else{
+        if(!h->sps.direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B){
+            av_log(h->s.avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
+            return -1;
+        }
         if(get_bits1(&s->gb)) { //field_pic_flag
             s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
         } else {
@@ -2950,6 +3016,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     h->ref_count[1]= h->pps.ref_count[1];
 
     if(h->slice_type_nos != AV_PICTURE_TYPE_I){
+        unsigned max= (16<<(s->picture_structure != PICT_FRAME))-1;
         if(h->slice_type_nos == AV_PICTURE_TYPE_B){
             h->direct_spatial_mv_pred= get_bits1(&s->gb);
         }
@@ -2960,18 +3027,18 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
             if(h->slice_type_nos==AV_PICTURE_TYPE_B)
                 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
 
-            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
-                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
-                h->ref_count[0]= h->ref_count[1]= 1;
-                return -1;
-            }
+        }
+        if(h->ref_count[0]-1 > max || h->ref_count[1]-1 > max){
+            av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
+            h->ref_count[0]= h->ref_count[1]= 1;
+            return -1;
         }
         if(h->slice_type_nos == AV_PICTURE_TYPE_B)
             h->list_count= 2;
         else
             h->list_count= 1;
     }else
-        h->list_count= 0;
+        h->ref_count[1]= h->ref_count[0]= h->list_count= 0;
 
     if(!default_ref_list_done){
         ff_h264_fill_default_ref_list(h);
@@ -3105,8 +3172,14 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
 
     h0->last_slice_type = slice_type;
     h->slice_num = ++h0->current_slice;
-    if(h->slice_num >= MAX_SLICES){
-        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
+
+    if(h->slice_num)
+        h0->slice_row[(h->slice_num-1)&(MAX_SLICES-1)]= s->resync_mb_y;
+    if (   h0->slice_row[h->slice_num&(MAX_SLICES-1)] + 3 >= s->resync_mb_y
+        && h0->slice_row[h->slice_num&(MAX_SLICES-1)] <= s->resync_mb_y
+        && h->slice_num >= MAX_SLICES) {
+        //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
+        av_log(s->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", h->slice_num, MAX_SLICES);
     }
 
     for(j=0; j<2; j++){
@@ -3596,7 +3669,8 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg){
                 if(s->mb_y >= s->mb_height){
                     tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
 
-                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
+                    if(   get_bits_count(&s->gb) == s->gb.size_in_bits
+                       || get_bits_count(&s->gb) <  s->gb.size_in_bits && s->avctx->error_recognition < FF_ER_AGGRESSIVE) {
                         ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
 
                         return 0;
@@ -3646,6 +3720,7 @@ static int execute_decode_slices(H264Context *h, int context_count){
             hx = h->thread_context[i];
             hx->s.error_recognition = avctx->error_recognition;
             hx->s.error_count = 0;
+            hx->x264_build= h->x264_build;
         }
 
         avctx->execute(avctx, (void *)decode_slice,
@@ -3733,13 +3808,13 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             s->workaround_bugs |= FF_BUG_TRUNCATED;
 
         if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
-        while(ptr[dst_length - 1] == 0 && dst_length > 0)
+        while(dst_length > 0 && ptr[dst_length - 1] == 0)
             dst_length--;
         }
         bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
 
         if(s->avctx->debug&FF_DEBUG_STARTCODE){
-            av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
+            av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d/%d at %d/%d length %d\n", hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length);
         }
 
         if (h->is_avc && (nalsize != consumed) && nalsize){
@@ -3789,9 +3864,22 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             if((err = decode_slice_header(hx, h)))
                break;
 
+            if (h->sei_recovery_frame_cnt >= 0 && h->recovery_frame < 0) {
+                h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) %
+                                    (1 << h->sps.log2_max_frame_num);
+            }
+
             s->current_picture_ptr->f.key_frame |=
-                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
-                    (h->sei_recovery_frame_cnt >= 0);
+                    (hx->nal_unit_type == NAL_IDR_SLICE);
+
+            if (h->recovery_frame == h->frame_num) {
+                h->sync |= 1;
+                h->recovery_frame = -1;
+            }
+
+            h->sync |= !!s->current_picture_ptr->f.key_frame;
+            h->sync |= 3*!!(s->flags2 & CODEC_FLAG2_SHOW_ALL);
+            s->current_picture_ptr->sync = h->sync;
 
             if (h->current_slice == 1) {
                 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)) {
@@ -3854,7 +3942,11 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             break;
         case NAL_SPS:
             init_get_bits(&s->gb, ptr, bit_length);
-            ff_h264_decode_seq_parameter_set(h);
+            if(ff_h264_decode_seq_parameter_set(h) < 0 && h->is_avc && (nalsize != consumed) && nalsize){
+                av_log(h->s.avctx, AV_LOG_DEBUG, "SPS decoding failure, trying alternative mode\n");
+                init_get_bits(&s->gb, &buf[buf_index + 1 - consumed], 8*nalsize);
+                ff_h264_decode_seq_parameter_set(h);
+            }
 
             if (s->flags& CODEC_FLAG_LOW_DELAY ||
                 (h->sps.bitstream_restriction_flag && !h->sps.num_reorder_frames))
@@ -3862,23 +3954,6 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
 
             if(avctx->has_b_frames < 2)
                 avctx->has_b_frames= !s->low_delay;
-
-            if (avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
-                h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
-                if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
-                    avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
-                    h->cur_chroma_format_idc = h->sps.chroma_format_idc;
-                    h->pixel_shift = h->sps.bit_depth_luma > 8;
-
-                    ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma, h->sps.chroma_format_idc);
-                    ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma, h->sps.chroma_format_idc);
-                    s->dsp.dct_bits = h->sps.bit_depth_luma > 8 ? 32 : 16;
-                    dsputil_init(&s->dsp, s->avctx);
-                } else {
-                    av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
-                    return -1;
-                }
-            }
             break;
         case NAL_PPS:
             init_get_bits(&s->gb, ptr, bit_length);
@@ -3972,6 +4047,8 @@ static int decode_frame(AVCodecContext *avctx,
 
         return 0;
     }
+    if(h->is_avc && buf_size >= 9 && AV_RB32(buf)==0x0164001F && buf[5] && buf[8]==0x67)
+        return ff_h264_decode_extradata(h, buf, buf_size);
 
     buf_index=decode_nal_units(h, buf, buf_size);
     if(buf_index < 0)
@@ -3995,13 +4072,12 @@ static int decode_frame(AVCodecContext *avctx,
 
         field_end(h, 0);
 
-        if (!h->next_output_pic) {
-            /* Wait for second field. */
-            *data_size = 0;
-
-        } else {
-            *data_size = sizeof(AVFrame);
-            *pict = *(AVFrame*)h->next_output_pic;
+        *data_size = 0; /* Wait for second field. */
+        if (h->next_output_pic && h->next_output_pic->sync) {
+            if(h->sync>1 || h->next_output_pic->f.pict_type != AV_PICTURE_TYPE_B){
+                *data_size = sizeof(AVFrame);
+                *pict = *(AVFrame*)h->next_output_pic;
+            }
         }
     }
 
@@ -4036,6 +4112,7 @@ static inline void fill_mb_avail(H264Context *h){
 #undef random
 #define COUNT 8000
 #define SIZE (COUNT*40)
+extern AVCodec ff_h264_decoder;
 int main(void){
     int i;
     uint8_t temp[SIZE];
@@ -4045,6 +4122,8 @@ int main(void){
     DSPContext dsp;
     AVCodecContext avctx;
 
+    avcodec_get_context_defaults3(&avctx, &ff_h264_decoder);
+
     dsputil_init(&dsp, &avctx);
 
     init_put_bits(&pb, temp, SIZE);