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/cscd.c | 32 +++++++++++---------------------
 1 file changed, 11 insertions(+), 21 deletions(-)

(limited to 'libavcodec/cscd.c')

diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c
index b982f5029c..6b8d144f76 100644
--- a/libavcodec/cscd.c
+++ b/libavcodec/cscd.c
@@ -31,7 +31,6 @@
 #include "libavutil/lzo.h"
 
 typedef struct {
-    AVFrame pic;
     int linelen, height, bpp;
     unsigned int decomp_size;
     unsigned char* decomp_buf;
@@ -150,12 +149,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         return AVERROR_INVALIDDATA;
     }
 
-    if (c->pic.data[0])
-        avctx->release_buffer(avctx, &c->pic);
-    c->pic.reference = 1;
-    c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
-                          FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if ((ret = ff_get_buffer(avctx, &c->pic)) < 0) {
+    if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -186,36 +180,35 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
 
     // flip upside down, add difference frame
     if (buf[0] & 1) { // keyframe
-        c->pic.pict_type = AV_PICTURE_TYPE_I;
-        c->pic.key_frame = 1;
+        picture->pict_type = AV_PICTURE_TYPE_I;
+        picture->key_frame = 1;
         switch (c->bpp) {
           case 16:
-              copy_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+              copy_frame_16(picture, c->decomp_buf, c->linelen, c->height);
               break;
           case 32:
-              copy_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+              copy_frame_32(picture, c->decomp_buf, c->linelen, c->height);
               break;
           default:
-              copy_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+              copy_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
                                  c->linelen, c->height);
         }
     } else {
-        c->pic.pict_type = AV_PICTURE_TYPE_P;
-        c->pic.key_frame = 0;
+        picture->pict_type = AV_PICTURE_TYPE_P;
+        picture->key_frame = 0;
         switch (c->bpp) {
           case 16:
-              add_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+              add_frame_16(picture, c->decomp_buf, c->linelen, c->height);
               break;
           case 32:
-              add_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+              add_frame_32(picture, c->decomp_buf, c->linelen, c->height);
               break;
           default:
-              add_frame_default(&c->pic, c->decomp_buf, FFALIGN(c->linelen, 4),
+              add_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
                                 c->linelen, c->height);
         }
     }
 
-    *picture = c->pic;
     *got_frame = 1;
     return buf_size;
 }
@@ -234,7 +227,6 @@ static av_cold int decode_init(AVCodecContext *avctx) {
             return AVERROR_INVALIDDATA;
     }
     c->bpp = avctx->bits_per_coded_sample;
-    c->pic.data[0] = NULL;
     c->linelen = avctx->width * avctx->bits_per_coded_sample / 8;
     c->height = avctx->height;
     stride = c->linelen;
@@ -252,8 +244,6 @@ static av_cold int decode_init(AVCodecContext *avctx) {
 static av_cold int decode_end(AVCodecContext *avctx) {
     CamStudioContext *c = avctx->priv_data;
     av_freep(&c->decomp_buf);
-    if (c->pic.data[0])
-        avctx->release_buffer(avctx, &c->pic);
     return 0;
 }
 
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