vp9_metadata: Avoid allocations and copies of packet structures

[ffmpeg] / libavcodec / decode.c

diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 4607e9f318a59b8bb146e5ee9e6b85e584a8610e..6c31166ec28ae76c62834c66887885c2e4c8fc7f 100644 (file)
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -281,10 +281,6 @@ int ff_decode_bsfs_init(AVCodecContext *avctx)
             bsfs_str++;
     }
 
-    ret = avcodec_parameters_to_context(avctx, s->bsfs[s->nb_bsfs - 1]->par_out);
-    if (ret < 0)
-        return ret;
-
     return 0;
 fail:
     ff_decode_bsfs_uninit(avctx);
@@ -744,7 +740,7 @@ static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
 {
     AVCodecInternal *avci = avctx->internal;
-    int ret;
+    int ret, changed;
 
     av_frame_unref(frame);
 
@@ -769,6 +765,51 @@ int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *fr
 
     avctx->frame_number++;
 
+    if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
+
+        if (avctx->frame_number == 1) {
+            avci->initial_format = frame->format;
+            switch(avctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO:
+                avci->initial_width  = frame->width;
+                avci->initial_height = frame->height;
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
+                                                                 avctx->sample_rate;
+                avci->initial_channels       = frame->channels;
+                avci->initial_channel_layout = frame->channel_layout;
+                break;
+            }
+        }
+
+        if (avctx->frame_number > 1) {
+            changed = avci->initial_format != frame->format;
+
+           switch(avctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO:
+                changed |= avci->initial_width  != frame->width ||
+                           avci->initial_height != frame->height;
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                changed |= avci->initial_sample_rate    != frame->sample_rate ||
+                           avci->initial_sample_rate    != avctx->sample_rate ||
+                           avci->initial_channels       != frame->channels ||
+                           avci->initial_channel_layout != frame->channel_layout;
+                break;
+            }
+
+            if (changed) {
+                avci->changed_frames_dropped++;
+                av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
+                                            " drop count: %d \n",
+                                            avctx->frame_number, frame->pts,
+                                            avci->changed_frames_dropped);
+                av_frame_unref(frame);
+                return AVERROR_INPUT_CHANGED;
+            }
+        }
+    }
     return 0;
 }
 
@@ -1382,6 +1423,7 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
         if (i == n) {
             av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
                    "%s not in possible list.\n", desc->name);
+            ret = AV_PIX_FMT_NONE;
             break;
         }
 
@@ -1500,7 +1542,7 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
         tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
                                          NULL, linesize);
         if (tmpsize < 0)
-            return -1;
+            return tmpsize;
 
         for (i = 0; i < 3 && data[i + 1]; i++)
             size[i] = data[i + 1] - data[i];