Merge commit '3176217c60ca7828712985092d9102d331ea4f3d'
[ffmpeg.git] / libavcodec / h264.c
index 81c1e81..0de6d91 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
  */
 
@@ -25,6 +25,8 @@
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
+#define UNCHECKED_BITSTREAM_READER 1
+
 #include "libavutil/avassert.h"
 #include "libavutil/display.h"
 #include "libavutil/imgutils.h"
 #include "profiles.h"
 #include "rectangle.h"
 #include "thread.h"
+#include "vdpau_compat.h"
 
-#include <assert.h>
+static int h264_decode_end(AVCodecContext *avctx);
 
 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
 
+int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
+{
+    H264Context *h = avctx->priv_data;
+    return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
+}
+
 static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
                               int (*mv)[2][4][2],
                               int mb_x, int mb_y, int mb_intra, int mb_skipped)
@@ -65,19 +74,28 @@ static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
     sl->mb_y = mb_y;
     sl->mb_xy = mb_x + mb_y * h->mb_stride;
     memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
-    assert(ref >= 0);
+    av_assert1(ref >= 0);
     /* FIXME: It is possible albeit uncommon that slice references
      * differ between slices. We take the easy approach and ignore
      * it for now. If this turns out to have any relevance in
      * practice then correct remapping should be added. */
     if (ref >= sl->ref_count[0])
         ref = 0;
+    if (!sl->ref_list[0][ref].data[0]) {
+        av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
+        ref = 0;
+    }
+    if ((sl->ref_list[0][ref].reference&3) != 3) {
+        av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
+        return;
+    }
     fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
                    2, 2, 2, ref, 1);
     fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
     fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
                    pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
-    assert(!FRAME_MBAFF(h));
+    sl->mb_mbaff =
+    sl->mb_field_decoding_flag = 0;
     ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
 }
 
@@ -162,11 +180,11 @@ void ff_h264_free_tables(H264Context *h)
 int ff_h264_alloc_tables(H264Context *h)
 {
     const int big_mb_num = h->mb_stride * (h->mb_height + 1);
-    const int row_mb_num = h->mb_stride * 2 * h->avctx->thread_count;
+    const int row_mb_num = 2*h->mb_stride*FFMAX(h->avctx->thread_count, 1);
     int x, y;
 
-    FF_ALLOCZ_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
-                      row_mb_num * 8 * sizeof(uint8_t), fail)
+    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
+                      row_mb_num, 8 * sizeof(uint8_t), fail)
     h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
 
     FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
@@ -177,10 +195,10 @@ int ff_h264_alloc_tables(H264Context *h)
                       big_mb_num * sizeof(uint16_t), fail)
     FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
                       big_mb_num * sizeof(uint8_t), fail)
-    FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[0],
-                      16 * row_mb_num * sizeof(uint8_t), fail);
-    FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[1],
-                      16 * row_mb_num * sizeof(uint8_t), fail);
+    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0],
+                      row_mb_num, 16 * sizeof(uint8_t), fail);
+    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1],
+                      row_mb_num, 16 * sizeof(uint8_t), fail);
     h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
     h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
 
@@ -233,7 +251,11 @@ int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
     sl->ref_cache[1][scan8[7]  + 1] =
     sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
 
+    if (sl != h->slice_ctx) {
+        memset(er, 0, sizeof(*er));
+    } else
     if (CONFIG_ERROR_RESILIENCE) {
+
         /* init ER */
         er->avctx          = h->avctx;
         er->decode_mb      = h264_er_decode_mb;
@@ -330,20 +352,23 @@ static int decode_extradata_ps_mp4(H264Context *h, const uint8_t *buf, int buf_s
     return 0;
 }
 
-int ff_h264_decode_extradata(H264Context *h)
+int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
 {
     AVCodecContext *avctx = h->avctx;
     int ret;
 
-    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 %d too short\n", avctx->extradata_size);
+                   "avcC %d too short\n", size);
             return AVERROR_INVALIDDATA;
         }
         /* sps and pps in the avcC always have length coded with 2 bytes,
@@ -354,7 +379,7 @@ 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 AVERROR_INVALIDDATA;
             ret = decode_extradata_ps_mp4(h, p, nalsize);
             if (ret < 0) {
@@ -368,7 +393,7 @@ 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 AVERROR_INVALIDDATA;
             ret = decode_extradata_ps_mp4(h, p, nalsize);
             if (ret < 0) {
@@ -379,14 +404,14 @@ int ff_h264_decode_extradata(H264Context *h)
             p += nalsize;
         }
         // Store right nal length size that will be used 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;
-        ret = decode_nal_units(h, avctx->extradata, avctx->extradata_size, 1);
+        ret = decode_nal_units(h, buf, size, 1);
         if (ret < 0)
             return ret;
     }
-    return 0;
+    return size;
 }
 
 static int h264_init_context(AVCodecContext *avctx, H264Context *h)
@@ -394,6 +419,11 @@ static int h264_init_context(AVCodecContext *avctx, H264Context *h)
     int i;
 
     h->avctx                 = avctx;
+    h->backup_width          = -1;
+    h->backup_height         = -1;
+    h->backup_pix_fmt        = AV_PIX_FMT_NONE;
+    h->current_sps_id        = -1;
+    h->cur_chroma_format_idc = -1;
 
     h->picture_structure     = PICT_FRAME;
     h->slice_context_count   = 1;
@@ -403,6 +433,8 @@ static int h264_init_context(AVCodecContext *avctx, H264Context *h)
     h->x264_build            = -1;
     h->recovery_frame        = -1;
     h->frame_recovered       = 0;
+    h->prev_frame_num        = -1;
+    h->sei_fpa.frame_packing_arrangement_cancel_flag = -1;
 
     h->next_outputed_poc = INT_MIN;
     for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
@@ -429,6 +461,10 @@ static int h264_init_context(AVCodecContext *avctx, H264Context *h)
     if (!h->cur_pic.f)
         return AVERROR(ENOMEM);
 
+    h->last_pic_for_ec.f = av_frame_alloc();
+    if (!h->last_pic_for_ec.f)
+        return AVERROR(ENOMEM);
+
     for (i = 0; i < h->nb_slice_ctx; i++)
         h->slice_ctx[i].h264 = h;
 
@@ -457,17 +493,21 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx)
     }
 
     if (avctx->codec_id == AV_CODEC_ID_H264) {
-        if (avctx->ticks_per_frame == 1)
-            h->avctx->framerate.num *= 2;
+        if (avctx->ticks_per_frame == 1) {
+            if(h->avctx->time_base.den < INT_MAX/2) {
+                h->avctx->time_base.den *= 2;
+            } else
+                h->avctx->time_base.num /= 2;
+        }
         avctx->ticks_per_frame = 2;
     }
 
     if (avctx->extradata_size > 0 && avctx->extradata) {
-       ret = ff_h264_decode_extradata(h);
-       if (ret < 0) {
-           ff_h264_free_context(h);
-           return ret;
-       }
+        ret = ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size);
+        if (ret < 0) {
+            h264_decode_end(avctx);
+            return ret;
+        }
     }
 
     if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
@@ -478,15 +518,21 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx)
 
     avctx->internal->allocate_progress = 1;
 
-    if (h->enable_er) {
+    ff_h264_flush_change(h);
+
+    if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
+        h->enable_er = 0;
+
+    if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
         av_log(avctx, AV_LOG_WARNING,
-               "Error resilience is enabled. It is unsafe and unsupported and may crash. "
+               "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
                "Use it at your own risk\n");
     }
 
     return 0;
 }
 
+#if HAVE_THREADS
 static int decode_init_thread_copy(AVCodecContext *avctx)
 {
     H264Context *h = avctx->priv_data;
@@ -505,6 +551,7 @@ static int decode_init_thread_copy(AVCodecContext *avctx)
 
     return 0;
 }
+#endif
 
 /**
  * Run setup operations that must be run after slice header decoding.
@@ -520,7 +567,6 @@ static void decode_postinit(H264Context *h, int setup_finished)
     H264Picture *out = h->cur_pic_ptr;
     H264Picture *cur = h->cur_pic_ptr;
     int i, pics, out_of_order, out_idx;
-    int invalid = 0, cnt = 0;
 
     h->cur_pic_ptr->f->pict_type = h->pict_type;
 
@@ -534,7 +580,10 @@ static void decode_postinit(H264Context *h, int setup_finished)
          * yet, so we assume the worst for now. */
         // if (setup_finished)
         //    ff_thread_finish_setup(h->avctx);
-        return;
+        if (cur->field_poc[0] == INT_MAX && cur->field_poc[1] == INT_MAX)
+            return;
+        if (h->avctx->hwaccel || h->missing_fields <=1)
+            return;
     }
 
     cur->f->interlaced_frame = 0;
@@ -588,7 +637,7 @@ static void decode_postinit(H264Context *h, int setup_finished)
         /* Derive top_field_first from field pocs. */
         cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
     } else {
-        if (cur->f->interlaced_frame || sps->pic_struct_present_flag) {
+        if (sps->pic_struct_present_flag) {
             /* Use picture timing SEI information. Even if it is a
              * information of a past frame, better than nothing. */
             if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
@@ -596,6 +645,10 @@ static void decode_postinit(H264Context *h, int setup_finished)
                 cur->f->top_field_first = 1;
             else
                 cur->f->top_field_first = 0;
+        } else if (cur->f->interlaced_frame) {
+            /* Default to top field first when pic_struct_present_flag
+             * is not set but interlaced frame detected */
+            cur->f->top_field_first = 1;
         } else {
             /* Most likely progressive */
             cur->f->top_field_first = 0;
@@ -608,9 +661,7 @@ static void decode_postinit(H264Context *h, int setup_finished)
         h->content_interpretation_type > 0 &&
         h->content_interpretation_type < 3) {
         AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
-        if (!stereo)
-            return;
-
+        if (stereo) {
         switch (h->frame_packing_arrangement_type) {
         case 0:
             stereo->type = AV_STEREO3D_CHECKERBOARD;
@@ -640,6 +691,7 @@ static void decode_postinit(H264Context *h, int setup_finished)
 
         if (h->content_interpretation_type == 2)
             stereo->flags = AV_STEREO3D_FLAG_INVERT;
+        }
     }
 
     if (h->sei_display_orientation_present &&
@@ -648,146 +700,111 @@ static void decode_postinit(H264Context *h, int setup_finished)
         AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
                                                            AV_FRAME_DATA_DISPLAYMATRIX,
                                                            sizeof(int32_t) * 9);
-        if (!rotation)
-            return;
-
-        av_display_rotation_set((int32_t *)rotation->data, angle);
-        av_display_matrix_flip((int32_t *)rotation->data,
-                               h->sei_hflip, h->sei_vflip);
+        if (rotation) {
+            av_display_rotation_set((int32_t *)rotation->data, angle);
+            av_display_matrix_flip((int32_t *)rotation->data,
+                                   h->sei_hflip, h->sei_vflip);
+        }
     }
 
     if (h->sei_reguserdata_afd_present) {
         AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
                                                      sizeof(uint8_t));
-        if (!sd)
-            return;
 
-        *sd->data = h->active_format_description;
-        h->sei_reguserdata_afd_present = 0;
+        if (sd) {
+            *sd->data = h->active_format_description;
+            h->sei_reguserdata_afd_present = 0;
+        }
     }
 
     if (h->a53_caption) {
         AVFrameSideData *sd = av_frame_new_side_data(cur->f,
                                                      AV_FRAME_DATA_A53_CC,
                                                      h->a53_caption_size);
-        if (!sd)
-            return;
-
-        memcpy(sd->data, h->a53_caption, h->a53_caption_size);
+        if (sd)
+            memcpy(sd->data, h->a53_caption, h->a53_caption_size);
         av_freep(&h->a53_caption);
         h->a53_caption_size = 0;
+        h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
     }
 
+    cur->mmco_reset = h->mmco_reset;
+    h->mmco_reset = 0;
+
     // FIXME do something with unavailable reference frames
 
     /* Sort B-frames into display order */
     if (sps->bitstream_restriction_flag ||
-        h->avctx->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
+        h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
         h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
     }
     h->low_delay = !h->avctx->has_b_frames;
 
+    for (i = 0; 1; i++) {
+        if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
+            if(i)
+                h->last_pocs[i-1] = cur->poc;
+            break;
+        } else if(i) {
+            h->last_pocs[i-1]= h->last_pocs[i];
+        }
+    }
+    out_of_order = MAX_DELAYED_PIC_COUNT - i;
+    if(   cur->f->pict_type == AV_PICTURE_TYPE_B
+       || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
+        out_of_order = FFMAX(out_of_order, 1);
+    if (out_of_order == MAX_DELAYED_PIC_COUNT) {
+        av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
+        for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
+            h->last_pocs[i] = INT_MIN;
+        h->last_pocs[0] = cur->poc;
+        cur->mmco_reset = 1;
+    } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
+        av_log(h->avctx, AV_LOG_INFO, "Increasing reorder buffer to %d\n", out_of_order);
+        h->avctx->has_b_frames = out_of_order;
+        h->low_delay = 0;
+    }
+
     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->reference == 0)
         cur->reference = DELAYED_PIC_REF;
 
-    /* Frame reordering. This code takes pictures from coding order and sorts
-     * them by their incremental POC value into display order. It supports POC
-     * gaps, MMCO reset codes and random resets.
-     * A "display group" can start either with a IDR frame (f.key_frame = 1),
-     * and/or can be closed down with a MMCO reset code. In sequences where
-     * there is no delay, we can't detect that (since the frame was already
-     * output to the user), so we also set h->mmco_reset to detect the MMCO
-     * reset code.
-     * FIXME: if we detect insufficient delays (as per h->avctx->has_b_frames),
-     * we increase the delay between input and output. All frames affected by
-     * the lag (e.g. those that should have been output before another frame
-     * that we already returned to the user) will be dropped. This is a bug
-     * that we will fix later. */
-    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
-        cnt     += out->poc < h->last_pocs[i];
-        invalid += out->poc == INT_MIN;
-    }
-    if (!h->mmco_reset && !cur->f->key_frame &&
-        cnt + invalid == MAX_DELAYED_PIC_COUNT && cnt > 0) {
-        h->mmco_reset = 2;
-        if (pics > 1)
-            h->delayed_pic[pics - 2]->mmco_reset = 2;
-    }
-    if (h->mmco_reset || cur->f->key_frame) {
-        for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
-            h->last_pocs[i] = INT_MIN;
-        cnt     = 0;
-        invalid = MAX_DELAYED_PIC_COUNT;
-    }
     out     = h->delayed_pic[0];
     out_idx = 0;
-    for (i = 1; i < MAX_DELAYED_PIC_COUNT &&
-                h->delayed_pic[i] &&
-                !h->delayed_pic[i - 1]->mmco_reset &&
-                !h->delayed_pic[i]->f->key_frame;
+    for (i = 1; h->delayed_pic[i] &&
+                !h->delayed_pic[i]->f->key_frame &&
+                !h->delayed_pic[i]->mmco_reset;
          i++)
         if (h->delayed_pic[i]->poc < out->poc) {
             out     = h->delayed_pic[i];
             out_idx = i;
         }
     if (h->avctx->has_b_frames == 0 &&
-        (h->delayed_pic[0]->f->key_frame || h->mmco_reset))
+        (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
         h->next_outputed_poc = INT_MIN;
-    out_of_order = !out->f->key_frame && !h->mmco_reset &&
-                   (out->poc < h->next_outputed_poc);
-
-    if (sps->bitstream_restriction_flag &&
-        h->avctx->has_b_frames >= sps->num_reorder_frames) {
-    } else if (out_of_order && pics - 1 == h->avctx->has_b_frames &&
-               h->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) {
-        if (invalid + cnt < MAX_DELAYED_PIC_COUNT) {
-            h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, cnt);
-        }
-        h->low_delay = 0;
-    } else if (h->low_delay &&
-               ((h->next_outputed_poc != INT_MIN &&
-                 out->poc > h->next_outputed_poc + 2) ||
-                cur->f->pict_type == AV_PICTURE_TYPE_B)) {
-        h->low_delay = 0;
-        h->avctx->has_b_frames++;
-    }
+    out_of_order = out->poc < h->next_outputed_poc;
 
-    if (pics > h->avctx->has_b_frames) {
+    if (out_of_order || pics > h->avctx->has_b_frames) {
         out->reference &= ~DELAYED_PIC_REF;
         // for frame threading, the owner must be the second field's thread or
         // else the first thread can release the picture and reuse it unsafely
         for (i = out_idx; h->delayed_pic[i]; i++)
             h->delayed_pic[i] = h->delayed_pic[i + 1];
     }
-    memmove(h->last_pocs, &h->last_pocs[1],
-            sizeof(*h->last_pocs) * (MAX_DELAYED_PIC_COUNT - 1));
-    h->last_pocs[MAX_DELAYED_PIC_COUNT - 1] = cur->poc;
     if (!out_of_order && pics > h->avctx->has_b_frames) {
         h->next_output_pic = out;
-        if (out->mmco_reset) {
-            if (out_idx > 0) {
-                h->next_outputed_poc                    = out->poc;
-                h->delayed_pic[out_idx - 1]->mmco_reset = out->mmco_reset;
-            } else {
-                h->next_outputed_poc = INT_MIN;
-            }
-        } else {
-            if (out_idx == 0 && pics > 1 && h->delayed_pic[0]->f->key_frame) {
-                h->next_outputed_poc = INT_MIN;
-            } else {
-                h->next_outputed_poc = out->poc;
-            }
-        }
-        h->mmco_reset = 0;
+        if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
+            h->next_outputed_poc = INT_MIN;
+        } else
+            h->next_outputed_poc = out->poc;
     } else {
-        av_log(h->avctx, AV_LOG_DEBUG, "no picture\n");
+        av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
     }
 
     if (h->next_output_pic) {
@@ -812,28 +829,43 @@ static void decode_postinit(H264Context *h, int setup_finished)
  */
 static void idr(H264Context *h)
 {
+    int i;
     ff_h264_remove_all_refs(h);
     h->prev_frame_num        =
-    h->prev_frame_num_offset =
-    h->prev_poc_msb          =
+    h->prev_frame_num_offset = 0;
+    h->prev_poc_msb          = 1<<16;
     h->prev_poc_lsb          = 0;
+    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
+        h->last_pocs[i] = INT_MIN;
 }
 
 /* forget old pics after a seek */
 void ff_h264_flush_change(H264Context *h)
 {
-    int i;
-    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
-        h->last_pocs[i] = INT_MIN;
+    int i, j;
+
     h->next_outputed_poc = INT_MIN;
     h->prev_interlaced_frame = 1;
     idr(h);
-    if (h->cur_pic_ptr)
+
+    h->prev_frame_num = -1;
+    if (h->cur_pic_ptr) {
         h->cur_pic_ptr->reference = 0;
+        for (j=i=0; h->delayed_pic[i]; i++)
+            if (h->delayed_pic[i] != h->cur_pic_ptr)
+                h->delayed_pic[j++] = h->delayed_pic[i];
+        h->delayed_pic[j] = NULL;
+    }
+    ff_h264_unref_picture(h, &h->last_pic_for_ec);
+
     h->first_field = 0;
     ff_h264_reset_sei(h);
     h->recovery_frame = -1;
     h->frame_recovered = 0;
+    h->current_slice = 0;
+    h->mmco_reset = 1;
+    for (i = 0; i < h->nb_slice_ctx; i++)
+        h->slice_ctx[i].list_count = 0;
 }
 
 /* forget old pics after a seek */
@@ -963,10 +995,17 @@ int ff_h264_get_profile(const SPS *sps)
     return profile;
 }
 
+
+#if FF_API_CAP_VDPAU
+static const uint8_t start_code[] = { 0x00, 0x00, 0x01 };
+#endif
+
 static int get_last_needed_nal(H264Context *h)
 {
     int nals_needed = 0;
+    int first_slice = 0;
     int i;
+    int ret;
 
     for (i = 0; i < h->pkt.nb_nals; i++) {
         H2645NAL *nal = &h->pkt.nals[i];
@@ -984,9 +1023,15 @@ static int get_last_needed_nal(H264Context *h)
         case NAL_DPA:
         case NAL_IDR_SLICE:
         case NAL_SLICE:
-            init_get_bits(&gb, nal->data + 1, (nal->size - 1) * 8);
-            if (!get_ue_golomb(&gb))
+            ret = init_get_bits8(&gb, nal->data + 1, (nal->size - 1));
+            if (ret < 0)
+                return ret;
+            if (!get_ue_golomb_long(&gb) ||  // first_mb_in_slice
+                !first_slice ||
+                first_slice != nal->type)
                 nals_needed = i;
+            if (!first_slice)
+                first_slice = nal->type;
         }
     }
 
@@ -999,8 +1044,13 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
     AVCodecContext *const avctx = h->avctx;
     unsigned context_count = 0;
     int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
+    int idr_cleared=0;
     int i, ret = 0;
 
+    h->nal_unit_type= 0;
+
+    if(!h->slice_context_count)
+         h->slice_context_count= 1;
     h->max_contexts = h->slice_context_count;
     if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
         h->current_slice = 0;
@@ -1009,16 +1059,26 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
         ff_h264_reset_sei(h);
     }
 
+    if (h->nal_length_size == 4) {
+        if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
+            h->is_avc = 0;
+        }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
+            h->is_avc = 1;
+    }
+
     ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc,
                                 h->nal_length_size, avctx->codec_id);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR,
                "Error splitting the input into NAL units.\n");
-        return ret;
+        /* don't consider NAL parsing failure a fatal error when parsing extradata, as the stream may work without it */
+        return parse_extradata ? buf_size : ret;
     }
 
     if (avctx->active_thread_type & FF_THREAD_FRAME)
         nals_needed = get_last_needed_nal(h);
+    if (nals_needed < 0)
+        return nals_needed;
 
     for (i = 0; i < h->pkt.nb_nals; i++) {
         H2645NAL *nal = &h->pkt.nals[i];
@@ -1030,17 +1090,23 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
             continue;
 
 again:
-        /* Ignore every NAL unit type except PPS and SPS during extradata
+        /* Ignore per frame NAL unit type during extradata
          * parsing. Decoding slices is not possible in codec init
          * with frame-mt */
-        if (parse_extradata && HAVE_THREADS &&
-            (h->avctx->active_thread_type & FF_THREAD_FRAME) &&
-            (nal->type != NAL_PPS && nal->type != NAL_SPS)) {
-            if (nal->type < NAL_AUD || nal->type > NAL_AUXILIARY_SLICE)
-                av_log(avctx, AV_LOG_INFO,
-                       "Ignoring NAL unit %d during extradata parsing\n",
+        if (parse_extradata) {
+            switch (nal->type) {
+            case NAL_IDR_SLICE:
+            case NAL_SLICE:
+            case NAL_DPA:
+            case NAL_DPB:
+            case NAL_DPC:
+                av_log(h->avctx, AV_LOG_WARNING,
+                       "Ignoring NAL %d in global header/extradata\n",
                        nal->type);
-            nal->type = NAL_FF_IGNORE;
+                // fall through to next case
+            case NAL_AUXILIARY_SLICE:
+                nal->type = NAL_FF_IGNORE;
+            }
         }
 
         // FIXME these should stop being context-global variables
@@ -1050,28 +1116,54 @@ again:
         err = 0;
         switch (nal->type) {
         case NAL_IDR_SLICE:
+            if ((nal->data[1] & 0xFC) == 0x98) {
+                av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
+                h->next_outputed_poc = INT_MIN;
+                ret = -1;
+                goto end;
+            }
             if (nal->type != NAL_IDR_SLICE) {
                 av_log(h->avctx, AV_LOG_ERROR,
                        "Invalid mix of idr and non-idr slices\n");
                 ret = -1;
                 goto end;
             }
-            idr(h); // FIXME ensure we don't lose some frames if there is reordering
+            if(!idr_cleared) {
+                if (h->current_slice && (avctx->active_thread_type & FF_THREAD_SLICE)) {
+                    av_log(h, AV_LOG_ERROR, "invalid mixed IDR / non IDR frames cannot be decoded in slice multithreading mode\n");
+                    ret = AVERROR_INVALIDDATA;
+                    goto end;
+                }
+                idr(h); // FIXME ensure we don't lose some frames if there is reordering
+            }
+            idr_cleared = 1;
+            h->has_recovery_point = 1;
         case NAL_SLICE:
             sl->gb = nal->gb;
+            if (   nals_needed >= i
+                || (!(avctx->active_thread_type & FF_THREAD_FRAME) && !context_count))
+                h->au_pps_id = -1;
 
             if ((err = ff_h264_decode_slice_header(h, sl)))
                 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->ps.sps->log2_max_frame_num) - 1);
+            if (h->sei_recovery_frame_cnt >= 0) {
+                if (h->frame_num != h->sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
+                    h->valid_recovery_point = 1;
+
+                if (   h->recovery_frame < 0
+                    || av_mod_uintp2(h->recovery_frame - h->frame_num, h->ps.sps->log2_max_frame_num) > h->sei_recovery_frame_cnt) {
+                    h->recovery_frame = av_mod_uintp2(h->frame_num + h->sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
+
+                    if (!h->valid_recovery_point)
+                        h->recovery_frame = h->frame_num;
+                }
             }
 
-            h->cur_pic_ptr->f->key_frame |=
-                (nal->type == NAL_IDR_SLICE) || (h->sei_recovery_frame_cnt >= 0);
+            h->cur_pic_ptr->f->key_frame |= (nal->type == NAL_IDR_SLICE);
 
-            if (nal->type == NAL_IDR_SLICE || h->recovery_frame == h->frame_num) {
+            if (nal->type == NAL_IDR_SLICE ||
+                (h->recovery_frame == h->frame_num && nal->ref_idc)) {
                 h->recovery_frame         = -1;
                 h->cur_pic_ptr->recovered = 1;
             }
@@ -1079,28 +1171,43 @@ again:
             // "recovered".
             if (nal->type == NAL_IDR_SLICE)
                 h->frame_recovered |= FRAME_RECOVERED_IDR;
+#if 1
+            h->cur_pic_ptr->recovered |= h->frame_recovered;
+#else
             h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
+#endif
 
             if (h->current_slice == 1) {
                 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS))
                     decode_postinit(h, i >= nals_needed);
 
                 if (h->avctx->hwaccel &&
-                    (ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0)) < 0)
-                    return ret;
+                    (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
+                    goto end;
+#if FF_API_CAP_VDPAU
+                if (CONFIG_H264_VDPAU_DECODER &&
+                    h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU)
+                    ff_vdpau_h264_picture_start(h);
+#endif
             }
 
-            if (sl->redundant_pic_count == 0 &&
-                (avctx->skip_frame < AVDISCARD_NONREF || nal->ref_idc) &&
-                (avctx->skip_frame < AVDISCARD_BIDIR  ||
-                 sl->slice_type_nos != AV_PICTURE_TYPE_B) &&
-                (avctx->skip_frame < AVDISCARD_NONKEY ||
-                 h->cur_pic_ptr->f->key_frame) &&
-                avctx->skip_frame < AVDISCARD_ALL) {
+            if (sl->redundant_pic_count == 0) {
                 if (avctx->hwaccel) {
-                    ret = avctx->hwaccel->decode_slice(avctx, nal->raw_data, nal->raw_size);
+                    ret = avctx->hwaccel->decode_slice(avctx,
+                                                       nal->raw_data,
+                                                       nal->raw_size);
                     if (ret < 0)
-                        return ret;
+                        goto end;
+#if FF_API_CAP_VDPAU
+                } else if (CONFIG_H264_VDPAU_DECODER &&
+                           h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU) {
+                    ff_vdpau_add_data_chunk(h->cur_pic_ptr->f->data[0],
+                                            start_code,
+                                            sizeof(start_code));
+                    ff_vdpau_add_data_chunk(h->cur_pic_ptr->f->data[0],
+                                            nal->raw_data,
+                                            nal->raw_size);
+#endif
                 } else
                     context_count++;
             }
@@ -1109,8 +1216,6 @@ again:
         case NAL_DPB:
         case NAL_DPC:
             avpriv_request_sample(avctx, "data partitioning");
-            ret = AVERROR(ENOSYS);
-            goto end;
             break;
         case NAL_SEI:
             h->gb = nal->gb;
@@ -1118,11 +1223,18 @@ again:
             if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
                 goto end;
             break;
-        case NAL_SPS:
-            ret = ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps);
-            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
-                goto end;
+        case NAL_SPS: {
+            GetBitContext tmp_gb = nal->gb;
+            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
+                break;
+            av_log(h->avctx, AV_LOG_DEBUG,
+                   "SPS decoding failure, trying again with the complete NAL\n");
+            init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
+            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
+                break;
+            ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
             break;
+        }
         case NAL_PPS:
             ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
                                                        nal->size_bits);
@@ -1150,10 +1262,17 @@ again:
             context_count = 0;
         }
 
-        if (err < 0) {
-            av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
+        if (err < 0 || err == SLICE_SKIPED) {
+            if (err < 0)
+                av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
             sl->ref_count[0] = sl->ref_count[1] = sl->list_count = 0;
-        } else if (err == 1) {
+        } else if (err == SLICE_SINGLETHREAD) {
+            if (context_count > 0) {
+                ret = ff_h264_execute_decode_slices(h, context_count);
+                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+                    goto end;
+                context_count = 0;
+            }
             /* Slice could not be decoded in parallel mode, restart. Note
              * that rbsp_buffer is not transferred, but since we no longer
              * run in parallel mode this should not be an issue. */
@@ -1169,6 +1288,50 @@ again:
 
     ret = 0;
 end:
+
+#if CONFIG_ERROR_RESILIENCE
+    /*
+     * FIXME: Error handling code does not seem to support interlaced
+     * when slices span multiple rows
+     * The ff_er_add_slice calls don't work right for bottom
+     * fields; they cause massive erroneous error concealing
+     * Error marking covers both fields (top and bottom).
+     * This causes a mismatched s->error_count
+     * and a bad error table. Further, the error count goes to
+     * INT_MAX when called for bottom field, because mb_y is
+     * past end by one (callers fault) and resync_mb_y != 0
+     * causes problems for the first MB line, too.
+     */
+    if (!FIELD_PICTURE(h) && h->current_slice &&
+        h->ps.sps == (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data &&
+        h->enable_er) {
+
+        H264SliceContext *sl = h->slice_ctx;
+        int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
+
+        ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
+
+        if (use_last_pic) {
+            ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
+            sl->ref_list[0][0].parent = &h->last_pic_for_ec;
+            memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
+            memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
+            sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
+        } else if (sl->ref_count[0]) {
+            ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
+        } else
+            ff_h264_set_erpic(&sl->er.last_pic, NULL);
+
+        if (sl->ref_count[1])
+            ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
+
+        sl->er.ref_count = sl->ref_count[0];
+
+        ff_er_frame_end(&sl->er);
+        if (use_last_pic)
+            memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
+    }
+#endif /* CONFIG_ERROR_RESILIENCE */
     /* clean up */
     if (h->cur_pic_ptr && !h->droppable) {
         ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
@@ -1191,26 +1354,62 @@ static int get_consumed_bytes(int pos, int buf_size)
     return pos;
 }
 
-static int output_frame(H264Context *h, AVFrame *dst, AVFrame *src)
+static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
 {
+    AVFrame *src = srcp->f;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format);
     int i;
     int ret = av_frame_ref(dst, src);
     if (ret < 0)
         return ret;
 
-    if (!h->ps.sps || !h->ps.sps->crop)
+    av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(h), 0);
+
+    h->backup_width   = h->avctx->width;
+    h->backup_height  = h->avctx->height;
+    h->backup_pix_fmt = h->avctx->pix_fmt;
+
+    h->avctx->width   = dst->width;
+    h->avctx->height  = dst->height;
+    h->avctx->pix_fmt = dst->format;
+
+    if (srcp->sei_recovery_frame_cnt == 0)
+        dst->key_frame = 1;
+    if (!srcp->crop)
         return 0;
 
-    for (i = 0; i < 3; i++) {
-        int hshift = (i > 0) ? h->chroma_x_shift : 0;
-        int vshift = (i > 0) ? h->chroma_y_shift : 0;
-        int off    = ((h->ps.sps->crop_left >> hshift) << h->pixel_shift) +
-                     (h->ps.sps->crop_top >> vshift) * dst->linesize[i];
+    for (i = 0; i < desc->nb_components; i++) {
+        int hshift = (i > 0) ? desc->log2_chroma_w : 0;
+        int vshift = (i > 0) ? desc->log2_chroma_h : 0;
+        int off    = ((srcp->crop_left >> hshift) << h->pixel_shift) +
+                      (srcp->crop_top  >> vshift) * dst->linesize[i];
         dst->data[i] += off;
     }
     return 0;
 }
 
+static int is_extra(const uint8_t *buf, int buf_size)
+{
+    int cnt= buf[5]&0x1f;
+    const uint8_t *p= buf+6;
+    while(cnt--){
+        int nalsize= AV_RB16(p) + 2;
+        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
+            return 0;
+        p += nalsize;
+    }
+    cnt = *(p++);
+    if(!cnt)
+        return 0;
+    while(cnt--){
+        int nalsize= AV_RB16(p) + 2;
+        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
+            return 0;
+        p += nalsize;
+    }
+    return 1;
+}
+
 static int h264_decode_frame(AVCodecContext *avctx, void *data,
                              int *got_frame, AVPacket *avpkt)
 {
@@ -1219,18 +1418,34 @@ static int h264_decode_frame(AVCodecContext *avctx, void *data,
     H264Context *h     = avctx->priv_data;
     AVFrame *pict      = data;
     int buf_index      = 0;
+    H264Picture *out;
+    int i, out_idx;
     int ret;
 
     h->flags = avctx->flags;
     h->setup_finished = 0;
 
+    if (h->backup_width != -1) {
+        avctx->width    = h->backup_width;
+        h->backup_width = -1;
+    }
+    if (h->backup_height != -1) {
+        avctx->height    = h->backup_height;
+        h->backup_height = -1;
+    }
+    if (h->backup_pix_fmt != AV_PIX_FMT_NONE) {
+        avctx->pix_fmt    = h->backup_pix_fmt;
+        h->backup_pix_fmt = AV_PIX_FMT_NONE;
+    }
+
+    ff_h264_unref_picture(h, &h->last_pic_for_ec);
+
     /* end of stream, output what is still in the buffers */
-out:
     if (buf_size == 0) {
-        H264Picture *out;
-        int i, out_idx;
+ out:
 
         h->cur_pic_ptr = NULL;
+        h->first_field = 0;
 
         // FIXME factorize this with the output code below
         out     = h->delayed_pic[0];
@@ -1249,7 +1464,8 @@ out:
             h->delayed_pic[i] = h->delayed_pic[i + 1];
 
         if (out) {
-            ret = output_frame(h, pict, out->f);
+            out->reference &= ~DELAYED_PIC_REF;
+            ret = output_frame(h, pict, out);
             if (ret < 0)
                 return ret;
             *got_frame = 1;
@@ -1257,19 +1473,30 @@ out:
 
         return buf_index;
     }
+    if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) {
+        int side_size;
+        uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
+        if (is_extra(side, side_size))
+            ff_h264_decode_extradata(h, side, side_size);
+    }
+    if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){
+        if (is_extra(buf, buf_size))
+            return ff_h264_decode_extradata(h, buf, buf_size);
+    }
 
     buf_index = decode_nal_units(h, buf, buf_size, 0);
     if (buf_index < 0)
         return AVERROR_INVALIDDATA;
 
     if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
-        buf_size = 0;
+        av_assert0(buf_index <= buf_size);
         goto out;
     }
 
     if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) {
-        if (avctx->skip_frame >= AVDISCARD_NONREF)
-            return 0;
+        if (avctx->skip_frame >= AVDISCARD_NONREF ||
+            buf_size >= 4 && !memcmp("Q264", buf, 4))
+            return buf_size;
         av_log(avctx, AV_LOG_ERROR, "no frame!\n");
         return AVERROR_INVALIDDATA;
     }
@@ -1279,22 +1506,58 @@ out:
         if (avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)
             decode_postinit(h, 1);
 
-        ff_h264_field_end(h, &h->slice_ctx[0], 0);
+        if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
+            return ret;
 
+        /* Wait for second field. */
         *got_frame = 0;
         if (h->next_output_pic && ((avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
+                                   (avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
                                    h->next_output_pic->recovered)) {
             if (!h->next_output_pic->recovered)
                 h->next_output_pic->f->flags |= AV_FRAME_FLAG_CORRUPT;
 
-            ret = output_frame(h, pict, h->next_output_pic->f);
+            if (!h->avctx->hwaccel &&
+                 (h->next_output_pic->field_poc[0] == INT_MAX ||
+                  h->next_output_pic->field_poc[1] == INT_MAX)
+            ) {
+                int p;
+                AVFrame *f = h->next_output_pic->f;
+                int field = h->next_output_pic->field_poc[0] == INT_MAX;
+                uint8_t *dst_data[4];
+                int linesizes[4];
+                const uint8_t *src_data[4];
+
+                av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
+
+                for (p = 0; p<4; p++) {
+                    dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
+                    src_data[p] = f->data[p] +  field   *f->linesize[p];
+                    linesizes[p] = 2*f->linesize[p];
+                }
+
+                av_image_copy(dst_data, linesizes, src_data, linesizes,
+                              f->format, f->width, f->height>>1);
+            }
+
+            ret = output_frame(h, pict, h->next_output_pic);
             if (ret < 0)
                 return ret;
             *got_frame = 1;
+            if (CONFIG_MPEGVIDEO) {
+                ff_print_debug_info2(h->avctx, pict, NULL,
+                                    h->next_output_pic->mb_type,
+                                    h->next_output_pic->qscale_table,
+                                    h->next_output_pic->motion_val,
+                                    &h->low_delay,
+                                    h->mb_width, h->mb_height, h->mb_stride, 1);
+            }
         }
     }
 
-    assert(pict->buf[0] || !*got_frame);
+    av_assert0(pict->buf[0] || !*got_frame);
+
+    ff_h264_unref_picture(h, &h->last_pic_for_ec);
 
     return get_consumed_bytes(buf_index, buf_size);
 }
@@ -1309,6 +1572,7 @@ av_cold void ff_h264_free_context(H264Context *h)
         ff_h264_unref_picture(h, &h->DPB[i]);
         av_frame_free(&h->DPB[i].f);
     }
+    memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
 
     h->cur_pic_ptr = NULL;
 
@@ -1317,12 +1581,18 @@ av_cold void ff_h264_free_context(H264Context *h)
     av_freep(&h->slice_ctx);
     h->nb_slice_ctx = 0;
 
+    h->a53_caption_size = 0;
+    av_freep(&h->a53_caption);
+
     for (i = 0; i < MAX_SPS_COUNT; i++)
         av_buffer_unref(&h->ps.sps_list[i]);
 
     for (i = 0; i < MAX_PPS_COUNT; i++)
         av_buffer_unref(&h->ps.pps_list[i]);
 
+    av_buffer_unref(&h->ps.sps_ref);
+    av_buffer_unref(&h->ps.pps_ref);
+
     ff_h2645_packet_uninit(&h->pkt);
 }
 
@@ -1330,10 +1600,13 @@ static av_cold int h264_decode_end(AVCodecContext *avctx)
 {
     H264Context *h = avctx->priv_data;
 
+    ff_h264_remove_all_refs(h);
     ff_h264_free_context(h);
 
     ff_h264_unref_picture(h, &h->cur_pic);
     av_frame_free(&h->cur_pic.f);
+    ff_h264_unref_picture(h, &h->last_pic_for_ec);
+    av_frame_free(&h->last_pic_for_ec.f);
 
     return 0;
 }
@@ -1341,12 +1614,14 @@ static av_cold int h264_decode_end(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(H264Context, x)
 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
 static const AVOption h264_options[] = {
-    { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VD },
+    {"is_avc", "is avc", offsetof(H264Context, is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0},
+    {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0},
+    { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
     { NULL },
 };
 
 static const AVClass h264_class = {
-    .class_name = "h264",
+    .class_name = "H264 Decoder",
     .item_name  = av_default_item_name,
     .option     = h264_options,
     .version    = LIBAVUTIL_VERSION_INT,
@@ -1371,3 +1646,29 @@ AVCodec ff_h264_decoder = {
     .profiles              = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
     .priv_class            = &h264_class,
 };
+
+#if CONFIG_H264_VDPAU_DECODER && FF_API_VDPAU
+static const AVClass h264_vdpau_class = {
+    .class_name = "H264 VDPAU Decoder",
+    .item_name  = av_default_item_name,
+    .option     = h264_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_h264_vdpau_decoder = {
+    .name           = "h264_vdpau",
+    .long_name      = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H264,
+    .priv_data_size = sizeof(H264Context),
+    .init           = ff_h264_decode_init,
+    .close          = h264_decode_end,
+    .decode         = h264_decode_frame,
+    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HWACCEL_VDPAU,
+    .flush          = flush_dpb,
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
+                                                     AV_PIX_FMT_NONE},
+    .profiles       = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
+    .priv_class     = &h264_vdpau_class,
+};
+#endif