Gather all coded_frame allocations and free functions to a single place

Allocating coded_frame is what most encoders do anyway, so it makes
sense to always allocate and free it in a single place. Moreover a lot
of encoders freed the frame with av_freep() instead of the correct API
av_frame_free().

This bring uniformity to encoder behaviour and prevents applications
from erroneusly accessing this field when not allocated. Additionally
this helps isolating encoders that export information with coded_frame,
and heavily simplifies its deprecation.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/libavcodec/zmbvenc.c b/libavcodec/zmbvenc.c
index d7b518db26..ea63b9477a 100644
--- a/libavcodec/zmbvenc.c
+++ b/libavcodec/zmbvenc.c
@@ -261,8 +261,6 @@ static av_cold int encode_end(AVCodecContext *avctx)
     deflateEnd(&c->zstream);
     av_freep(&c->prev);
 
-    av_frame_free(&avctx->coded_frame);
-
     return 0;
 }
 
@@ -326,12 +324,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
         return -1;
     }
 
-    avctx->coded_frame = av_frame_alloc();
-    if (!avctx->coded_frame) {
-        encode_end(avctx);
-        return AVERROR(ENOMEM);
-    }
-
     return 0;
 }