From 7e350379f87e7f74420b4813170fe808e2313911 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 28 Nov 2012 08:41:07 +0100
Subject: lavfi: switch to AVFrame.

Deprecate AVFilterBuffer/AVFilterBufferRef and everything related to it
and use AVFrame instead.
---
 libavfilter/video.c | 89 +++++++++++++----------------------------------------
 1 file changed, 21 insertions(+), 68 deletions(-)

(limited to 'libavfilter/video.c')

diff --git a/libavfilter/video.c b/libavfilter/video.c
index cb68ca4162..23bf867a82 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -19,6 +19,7 @@
 #include <string.h>
 #include <stdio.h>
 
+#include "libavutil/buffer.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/mem.h"
 
@@ -26,77 +27,34 @@
 #include "internal.h"
 #include "video.h"
 
-#ifdef DEBUG
-static char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms)
+AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
 {
-    snprintf(buf, buf_size, "%s%s%s%s%s%s",
-             perms & AV_PERM_READ      ? "r" : "",
-             perms & AV_PERM_WRITE     ? "w" : "",
-             perms & AV_PERM_PRESERVE  ? "p" : "",
-             perms & AV_PERM_REUSE     ? "u" : "",
-             perms & AV_PERM_REUSE2    ? "U" : "",
-             perms & AV_PERM_NEG_LINESIZES ? "n" : "");
-    return buf;
-}
-#endif
-
-static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
-{
-    av_unused char buf[16];
-    av_dlog(ctx,
-            "ref[%p buf:%p refcount:%d perms:%s data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64,
-            ref, ref->buf, ref->buf->refcount, ff_get_ref_perms_string(buf, sizeof(buf), ref->perms), ref->data[0],
-            ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
-            ref->pts, ref->pos);
-
-    if (ref->video) {
-        av_dlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
-                ref->video->pixel_aspect.num, ref->video->pixel_aspect.den,
-                ref->video->w, ref->video->h,
-                !ref->video->interlaced     ? 'P' :         /* Progressive  */
-                ref->video->top_field_first ? 'T' : 'B',    /* Top / Bottom */
-                ref->video->key_frame,
-                av_get_picture_type_char(ref->video->pict_type));
-    }
-    if (ref->audio) {
-        av_dlog(ctx, " cl:%"PRId64"d n:%d r:%d p:%d",
-                ref->audio->channel_layout,
-                ref->audio->nb_samples,
-                ref->audio->sample_rate,
-                ref->audio->planar);
-    }
-
-    av_dlog(ctx, "]%s", end ? "\n" : "");
-}
-
-AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
-{
-    return ff_get_video_buffer(link->dst->outputs[0], perms, w, 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. */
-AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
 {
-    int linesize[4];
-    uint8_t *data[4];
-    AVFilterBufferRef *picref = NULL;
+    AVFrame *frame = av_frame_alloc();
+    int ret;
 
-    // +2 is needed for swscaler, +16 to be SIMD-friendly
-    if (av_image_alloc(data, linesize, w, h, link->format, 16) < 0)
+    if (!frame)
         return NULL;
 
-    picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
-                                                       perms, w, h, link->format);
-    if (!picref) {
-        av_free(data[0]);
-        return NULL;
-    }
+    frame->width  = w;
+    frame->height = h;
+    frame->format = link->format;
 
-    return picref;
+    ret = av_frame_get_buffer(frame, 32);
+    if (ret < 0)
+        av_frame_free(&frame);
+
+    return frame;
 }
 
+#if FF_API_AVFILTERBUFFER
 AVFilterBufferRef *
 avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
                                           int w, int h, enum AVPixelFormat format)
@@ -141,25 +99,20 @@ fail:
     av_free(pic);
     return NULL;
 }
+#endif
 
-AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
 {
-    AVFilterBufferRef *ret = NULL;
+    AVFrame *ret = NULL;
 
     av_unused char buf[16];
     FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
-    av_dlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
 
     if (link->dstpad->get_video_buffer)
-        ret = link->dstpad->get_video_buffer(link, perms, w, h);
+        ret = link->dstpad->get_video_buffer(link, w, h);
 
     if (!ret)
-        ret = ff_default_get_video_buffer(link, perms, w, h);
-
-    if (ret)
-        ret->type = AVMEDIA_TYPE_VIDEO;
-
-    FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " returning "); ff_dlog_ref(NULL, ret, 1);
+        ret = ff_default_get_video_buffer(link, w, h);
 
     return ret;
 }
-- 
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