huffyuv: use the AVFrame API properly.

libavcodec/huffyuv.h

@@ -78,7 +78,6 @@ typedef struct HYuvContext {
     uint32_t bits[3][256];
     uint32_t pix_bgr_map[1<<VLC_BITS];
     VLC vlc[6];                             //Y,U,V,YY,YU,YV
-    AVFrame picture;
     uint8_t *bitstream_buffer;
     unsigned int bitstream_buffer_size;
     DSPContext dsp;

libavcodec/huffyuvenc.c

@@ -151,7 +151,12 @@ static av_cold int encode_init(AVCodecContext *avctx)
     avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
     s->version = 2;
 
-    avctx->coded_frame = &s->picture;
+    avctx->coded_frame = av_frame_alloc();
+    if (!avctx->coded_frame)
+        return AVERROR(ENOMEM);
+
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+    avctx->coded_frame->key_frame = 1;
 
     switch (avctx->pix_fmt) {
     case AV_PIX_FMT_YUV420P:
@@ -438,7 +443,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     const int fake_ystride = s->interlaced ? pict->linesize[0]*2  : pict->linesize[0];
     const int fake_ustride = s->interlaced ? pict->linesize[1]*2  : pict->linesize[1];
     const int fake_vstride = s->interlaced ? pict->linesize[2]*2  : pict->linesize[2];
-    AVFrame * const p = &s->picture;
+    const AVFrame * const p = pict;
     int i, j, size = 0, ret;
 
     if (!pkt->data &&
@@ -447,10 +452,6 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         return ret;
     }
 
-    *p = *pict;
-    p->pict_type = AV_PICTURE_TYPE_I;
-    p->key_frame = 1;
-
     if (s->context) {
         for (i = 0; i < 3; i++) {
             ff_huff_gen_len_table(s->len[i], s->stats[i]);
@@ -676,6 +677,8 @@ static av_cold int encode_end(AVCodecContext *avctx)
     av_freep(&avctx->extradata);
     av_freep(&avctx->stats_out);
 
+    av_frame_free(&avctx->coded_frame);
+
     return 0;
 }