1 files changed, 38 insertions, 19 deletions

diff --git a/libavfilter/video.c b/libavfilter/video.c
index cadac50da8..2744be6360 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -1,24 +1,29 @@
 /*
- * This file is part of Libav.
+ * Copyright 2007 Bobby Bingham
+ * Copyright Stefano Sabatini <stefasab gmail com>
+ * Copyright Vitor Sessak <vitor1001 gmail com>
  *
- * Libav is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <string.h>
 #include <stdio.h>
 
+#include "libavutil/avassert.h"
 #include "libavutil/buffer.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/mem.h"
@@ -27,38 +32,52 @@
 #include "internal.h"
 #include "video.h"
 
+#define BUFFER_ALIGN 32
+
+
 AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
 {
     return ff_get_video_buffer(link->dst->outputs[0], w, h);
 }
 
-/* TODO: set the buffer's priv member to a context structure for the whole
- * filter chain.  This will allow for a buffer pool instead of the constant
- * alloc & free cycle currently implemented. */
 AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
 {
-    AVFrame *frame = av_frame_alloc();
-    int ret;
+    int pool_width = 0;
+    int pool_height = 0;
+    int pool_align = 0;
+    enum AVPixelFormat pool_format = AV_PIX_FMT_NONE;
 
-    if (!frame)
-        return NULL;
+    if (!link->video_frame_pool) {
+        link->video_frame_pool = ff_video_frame_pool_init(av_buffer_allocz, w, h,
+                                                          link->format, BUFFER_ALIGN);
+        if (!link->video_frame_pool)
+            return NULL;
+    } else {
+        if (ff_video_frame_pool_get_config(link->video_frame_pool,
+                                           &pool_width, &pool_height,
+                                           &pool_format, &pool_align) < 0) {
+            return NULL;
+        }
 
-    frame->width  = w;
-    frame->height = h;
-    frame->format = link->format;
+        if (pool_width != w || pool_height != h ||
+            pool_format != link->format || pool_align != BUFFER_ALIGN) {
 
-    ret = av_frame_get_buffer(frame, 32);
-    if (ret < 0)
-        av_frame_free(&frame);
+            ff_video_frame_pool_uninit((FFVideoFramePool **)&link->video_frame_pool);
+            link->video_frame_pool = ff_video_frame_pool_init(av_buffer_allocz, w, h,
+                                                              link->format, BUFFER_ALIGN);
+            if (!link->video_frame_pool)
+                return NULL;
+        }
+    }
 
-    return frame;
+    return ff_video_frame_pool_get(link->video_frame_pool);
 }
 
 AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
 {
     AVFrame *ret = NULL;
 
-    FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
+    FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0);
 
     if (link->dstpad->get_video_buffer)
         ret = link->dstpad->get_video_buffer(link, w, h);