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/cdxl.c | 36 ++++++++++++++----------------------
 1 file changed, 14 insertions(+), 22 deletions(-)

(limited to 'libavcodec/cdxl.c')

diff --git a/libavcodec/cdxl.c b/libavcodec/cdxl.c
index 0b3d59cb80..465867c098 100644
--- a/libavcodec/cdxl.c
+++ b/libavcodec/cdxl.c
@@ -49,7 +49,6 @@ static av_cold int cdxl_decode_init(AVCodecContext *avctx)
 {
     CDXLVideoContext *c = avctx->priv_data;
 
-    avcodec_get_frame_defaults(&c->frame);
     c->new_video_size = 0;
     c->avctx          = avctx;
 
@@ -113,15 +112,15 @@ static void import_format(CDXLVideoContext *c, int linesize, uint8_t *out)
     }
 }
 
-static void cdxl_decode_rgb(CDXLVideoContext *c)
+static void cdxl_decode_rgb(CDXLVideoContext *c, AVFrame *frame)
 {
-    uint32_t *new_palette = (uint32_t *)c->frame.data[1];
+    uint32_t *new_palette = (uint32_t *)frame->data[1];
 
     import_palette(c, new_palette);
-    import_format(c, c->frame.linesize[0], c->frame.data[0]);
+    import_format(c, frame->linesize[0], frame->data[0]);
 }
 
-static void cdxl_decode_ham6(CDXLVideoContext *c)
+static void cdxl_decode_ham6(CDXLVideoContext *c, AVFrame *frame)
 {
     AVCodecContext *avctx = c->avctx;
     uint32_t new_palette[16], r, g, b;
@@ -129,7 +128,7 @@ static void cdxl_decode_ham6(CDXLVideoContext *c)
     int x, y;
 
     ptr = c->new_video;
-    out = c->frame.data[0];
+    out = frame->data[0];
 
     import_palette(c, new_palette);
     import_format(c, avctx->width, c->new_video);
@@ -160,11 +159,11 @@ static void cdxl_decode_ham6(CDXLVideoContext *c)
             }
             AV_WL24(out + x * 3, r | g | b);
         }
-        out += c->frame.linesize[0];
+        out += frame->linesize[0];
     }
 }
 
-static void cdxl_decode_ham8(CDXLVideoContext *c)
+static void cdxl_decode_ham8(CDXLVideoContext *c, AVFrame *frame)
 {
     AVCodecContext *avctx = c->avctx;
     uint32_t new_palette[64], r, g, b;
@@ -172,7 +171,7 @@ static void cdxl_decode_ham8(CDXLVideoContext *c)
     int x, y;
 
     ptr = c->new_video;
-    out = c->frame.data[0];
+    out = frame->data[0];
 
     import_palette(c, new_palette);
     import_format(c, avctx->width, c->new_video);
@@ -203,7 +202,7 @@ static void cdxl_decode_ham8(CDXLVideoContext *c)
             }
             AV_WL24(out + x * 3, r | g | b);
         }
-        out += c->frame.linesize[0];
+        out += frame->linesize[0];
     }
 }
 
@@ -211,7 +210,7 @@ static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
                              int *got_frame, AVPacket *pkt)
 {
     CDXLVideoContext *c = avctx->priv_data;
-    AVFrame * const p = &c->frame;
+    AVFrame * const p = data;
     int ret, w, h, encoding, aligned_width, buf_size = pkt->size;
     const uint8_t *buf = pkt->data;
 
@@ -259,11 +258,7 @@ static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
         return AVERROR_PATCHWELCOME;
     }
 
-    if (p->data[0])
-        avctx->release_buffer(avctx, p);
-
-    p->reference = 0;
-    if ((ret = ff_get_buffer(avctx, p)) < 0) {
+    if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -275,14 +270,13 @@ static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
         if (!c->new_video)
             return AVERROR(ENOMEM);
         if (c->bpp == 8)
-            cdxl_decode_ham8(c);
+            cdxl_decode_ham8(c, p);
         else
-            cdxl_decode_ham6(c);
+            cdxl_decode_ham6(c, p);
     } else {
-        cdxl_decode_rgb(c);
+        cdxl_decode_rgb(c, p);
     }
     *got_frame = 1;
-    *(AVFrame*)data = c->frame;
 
     return buf_size;
 }
@@ -292,8 +286,6 @@ static av_cold int cdxl_decode_end(AVCodecContext *avctx)
     CDXLVideoContext *c = avctx->priv_data;
 
     av_free(c->new_video);
-    if (c->frame.data[0])
-        avctx->release_buffer(avctx, &c->frame);
 
     return 0;
 }
-- 
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