X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fdecode.c;h=a7b37c6917d73751d8c9c4ba1638631d6c44b711;hb=e786e37326d4274c1dfbc37a6478680684c779c9;hp=4607e9f318a59b8bb146e5ee9e6b85e584a8610e;hpb=f3881c04e93ee70567bd3fe087f49b996b026d30;p=ffmpeg

diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 4607e9f318a..a7b37c6917d 100644
--- 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);
@@ -304,7 +300,6 @@ static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
         ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
         if (ret == AVERROR(EAGAIN)) {
             /* no packets available, try the next filter up the chain */
-            ret = 0;
             idx--;
             continue;
         } else if (ret < 0 && ret != AVERROR_EOF) {
@@ -744,7 +739,7 @@ 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 +764,51 @@ 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 +1422,7 @@ 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 +1541,7 @@ 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];
@@ -1883,6 +1924,11 @@ static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
             av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
             return AVERROR(EINVAL);
         }
+    } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+        if (frame->nb_samples > avctx->max_samples) {
+            av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
+            return AVERROR(EINVAL);
+        }
     }
     ret = ff_decode_frame_props(avctx, frame);
     if (ret < 0)
@@ -1929,7 +1975,7 @@ int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
     return ret;
 }
 
-static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
+static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
 {
     AVFrame *tmp;
     int ret;
@@ -1945,7 +1991,7 @@ static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
     if (!frame->data[0])
         return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
 
-    if (av_frame_is_writable(frame))
+    if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || av_frame_is_writable(frame))
         return ff_decode_frame_props(avctx, frame);
 
     tmp = av_frame_alloc();
@@ -1966,9 +2012,9 @@ static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
     return 0;
 }
 
-int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
+int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
 {
-    int ret = reget_buffer_internal(avctx, frame);
+    int ret = reget_buffer_internal(avctx, frame, flags);
     if (ret < 0)
         av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
     return ret;