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/huffyuvdec.c | 37 +++++++++++++------------------------
 1 file changed, 13 insertions(+), 24 deletions(-)

(limited to 'libavcodec/huffyuvdec.c')

diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c
index 6aa7335bf9..7a58ba4688 100644
--- a/libavcodec/huffyuvdec.c
+++ b/libavcodec/huffyuvdec.c
@@ -241,7 +241,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
     ff_huffyuv_common_init(avctx);
     memset(s->vlc, 0, 3 * sizeof(VLC));
 
-    avctx->coded_frame = &s->picture;
     s->interlaced = s->height > 288;
 
     s->bgr32 = 1;
@@ -337,7 +336,6 @@ static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
     HYuvContext *s = avctx->priv_data;
     int i;
 
-    avctx->coded_frame= &s->picture;
     ff_huffyuv_alloc_temp(s);
 
     for (i = 0; i < 6; i++)
@@ -443,7 +441,7 @@ static void decode_bgr_bitstream(HYuvContext *s, int count)
     }
 }
 
-static void draw_slice(HYuvContext *s, int y)
+static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
 {
     int h, cy, i;
     int offset[AV_NUM_DATA_POINTERS];
@@ -460,14 +458,14 @@ static void draw_slice(HYuvContext *s, int y)
         cy = y;
     }
 
-    offset[0] = s->picture.linesize[0]*y;
-    offset[1] = s->picture.linesize[1]*cy;
-    offset[2] = s->picture.linesize[2]*cy;
+    offset[0] = frame->linesize[0] * y;
+    offset[1] = frame->linesize[1] * cy;
+    offset[2] = frame->linesize[2] * cy;
     for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
         offset[i] = 0;
     emms_c();
 
-    s->avctx->draw_horiz_band(s->avctx, &s->picture, offset, y, 3, h);
+    s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
 
     s->last_slice_end = y + h;
 }
@@ -482,11 +480,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     const int width2 = s->width>>1;
     const int height = s->height;
     int fake_ystride, fake_ustride, fake_vstride;
-    AVFrame * const p = &s->picture;
+    ThreadFrame frame = { .f = data };
+    AVFrame * const p = data;
     int table_size = 0;
 
-    AVFrame *picture = data;
-
     av_fast_malloc(&s->bitstream_buffer,
                    &s->bitstream_buffer_size,
                    buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
@@ -497,11 +494,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer,
                      (const uint32_t*)buf, buf_size / 4);
 
-    if (p->data[0])
-        ff_thread_release_buffer(avctx, p);
-
-    p->reference = 0;
-    if (ff_thread_get_buffer(avctx, p) < 0) {
+    if (ff_thread_get_buffer(avctx, &frame, 0) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
@@ -572,7 +565,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                         if (y >= s->height) break;
                     }
 
-                    draw_slice(s, y);
+                    draw_slice(s, p, y);
 
                     ydst = p->data[0] + p->linesize[0]*y;
                     udst = p->data[1] + p->linesize[1]*cy;
@@ -594,7 +587,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                         }
                     }
                 }
-                draw_slice(s, height);
+                draw_slice(s, p, height);
 
                 break;
             case MEDIAN:
@@ -651,7 +644,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                         }
                         if (y >= height) break;
                     }
-                    draw_slice(s, y);
+                    draw_slice(s, p, y);
 
                     decode_422_bitstream(s, width);
 
@@ -666,7 +659,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                     }
                 }
 
-                draw_slice(s, height);
+                draw_slice(s, p, height);
                 break;
             }
         }
@@ -710,7 +703,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                     }
                 }
                 // just 1 large slice as this is not possible in reverse order
-                draw_slice(s, height);
+                draw_slice(s, p, height);
                 break;
             default:
                 av_log(avctx, AV_LOG_ERROR,
@@ -724,7 +717,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     }
     emms_c();
 
-    *picture = *p;
     *got_frame = 1;
 
     return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
@@ -735,9 +727,6 @@ static av_cold int decode_end(AVCodecContext *avctx)
     HYuvContext *s = avctx->priv_data;
     int i;
 
-    if (s->picture.data[0])
-        avctx->release_buffer(avctx, &s->picture);
-
     ff_huffyuv_common_end(s);
     av_freep(&s->bitstream_buffer);
 
-- 
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