From 759001c534287a96dc96d1e274665feb7059145d Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 21 Nov 2012 21:34:46 +0100
Subject: lavc decoders: work with refcounted frames.

---
 libavcodec/roqvideodec.c | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

(limited to 'libavcodec/roqvideodec.c')

diff --git a/libavcodec/roqvideodec.c b/libavcodec/roqvideodec.c
index 3ee62c01b5..ef561a3210 100644
--- a/libavcodec/roqvideodec.c
+++ b/libavcodec/roqvideodec.c
@@ -31,6 +31,7 @@
 
 #include "avcodec.h"
 #include "bytestream.h"
+#include "internal.h"
 #include "roqvideo.h"
 
 static void roqvideo_decode_frame(RoqContext *ri)
@@ -168,8 +169,15 @@ static av_cold int roq_decode_init(AVCodecContext *avctx)
 
     s->width = avctx->width;
     s->height = avctx->height;
-    s->last_frame    = &s->frames[0];
-    s->current_frame = &s->frames[1];
+
+    s->last_frame    = av_frame_alloc();
+    s->current_frame = av_frame_alloc();
+    if (!s->current_frame || !s->last_frame) {
+        av_frame_free(&s->current_frame);
+        av_frame_free(&s->last_frame);
+        return AVERROR(ENOMEM);
+    }
+
     avctx->pix_fmt = AV_PIX_FMT_YUV444P;
 
     return 0;
@@ -183,11 +191,11 @@ static int roq_decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     RoqContext *s = avctx->priv_data;
     int copy= !s->current_frame->data[0];
+    int ret;
 
-    s->current_frame->reference = 3;
-    if (avctx->reget_buffer(avctx, s->current_frame)) {
+    if ((ret = ff_reget_buffer(avctx, s->current_frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "  RoQ: get_buffer() failed\n");
-        return -1;
+        return ret;
     }
 
     if(copy)
@@ -197,8 +205,9 @@ static int roq_decode_frame(AVCodecContext *avctx,
     bytestream2_init(&s->gb, buf, buf_size);
     roqvideo_decode_frame(s);
 
+    if ((ret = av_frame_ref(data, s->current_frame)) < 0)
+        return ret;
     *got_frame      = 1;
-    *(AVFrame*)data = *s->current_frame;
 
     /* shuffle frames */
     FFSWAP(AVFrame *, s->current_frame, s->last_frame);
@@ -210,11 +219,8 @@ static av_cold int roq_decode_end(AVCodecContext *avctx)
 {
     RoqContext *s = avctx->priv_data;
 
-    /* release the last frame */
-    if (s->last_frame->data[0])
-        avctx->release_buffer(avctx, s->last_frame);
-    if (s->current_frame->data[0])
-        avctx->release_buffer(avctx, s->current_frame);
+    av_frame_free(&s->current_frame);
+    av_frame_free(&s->last_frame);
 
     return 0;
 }
-- 
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