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/kgv1dec.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

(limited to 'libavcodec/kgv1dec.c')

diff --git a/libavcodec/kgv1dec.c b/libavcodec/kgv1dec.c
index 01655a54b8..74ae6b7ffe 100644
--- a/libavcodec/kgv1dec.c
+++ b/libavcodec/kgv1dec.c
@@ -32,20 +32,20 @@
 
 typedef struct {
     AVCodecContext *avctx;
-    AVFrame prev, cur;
+    AVFrame prev;
 } KgvContext;
 
 static void decode_flush(AVCodecContext *avctx)
 {
     KgvContext * const c = avctx->priv_data;
 
-    if (c->prev.data[0])
-        avctx->release_buffer(avctx, &c->prev);
+    av_frame_unref(&c->prev);
 }
 
 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                         AVPacket *avpkt)
 {
+    AVFrame *frame = data;
     const uint8_t *buf = avpkt->data;
     const uint8_t *buf_end = buf + avpkt->size;
     KgvContext * const c = avctx->priv_data;
@@ -65,17 +65,15 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         return res;
 
     if (w != avctx->width || h != avctx->height) {
-        if (c->prev.data[0])
-            avctx->release_buffer(avctx, &c->prev);
+        av_frame_unref(&c->prev);
         avcodec_set_dimensions(avctx, w, h);
     }
 
     maxcnt = w * h;
 
-    c->cur.reference = 3;
-    if ((res = ff_get_buffer(avctx, &c->cur)) < 0)
+    if ((res = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0)
         return res;
-    out  = (uint16_t *) c->cur.data[0];
+    out  = (uint16_t *) frame->data[0];
     if (c->prev.data[0]) {
         prev = (uint16_t *) c->prev.data[0];
     } else {
@@ -156,12 +154,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     if (outcnt - maxcnt)
         av_log(avctx, AV_LOG_DEBUG, "frame finished with %d diff\n", outcnt - maxcnt);
 
-    *got_frame = 1;
-    *(AVFrame*)data = c->cur;
+    av_frame_unref(&c->prev);
+    if ((res = av_frame_ref(&c->prev, frame)) < 0)
+        return res;
 
-    if (c->prev.data[0])
-        avctx->release_buffer(avctx, &c->prev);
-    FFSWAP(AVFrame, c->cur, c->prev);
+    *got_frame = 1;
 
     return avpkt->size;
 }
-- 
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