[FFmpeg-devel] [PATCH] avfilter/framepool: fix alignment requirements for audio and video filters

[Paul B Mahol <onemda@gmail.com>]

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavfilter/audio.c     | 11 +++++------
 libavfilter/framepool.c | 18 ++++++++----------
 libavfilter/video.c     | 11 +++++------
 3 files changed, 18 insertions(+), 22 deletions(-)

diff --git a/libavfilter/audio.c b/libavfilter/audio.c
index cebc9709dd..a0408226a3 100644
--- a/libavfilter/audio.c
+++ b/libavfilter/audio.c
@@ -22,15 +22,13 @@
 #include "libavutil/avassert.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/common.h"
+#include "libavutil/cpu.h"
 
 #include "audio.h"
 #include "avfilter.h"
 #include "framepool.h"
 #include "internal.h"
 
-#define BUFFER_ALIGN 0
-
-
 AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
 {
     return ff_get_audio_buffer(link->dst->outputs[0], nb_samples);
@@ -41,12 +39,13 @@ AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
     AVFrame *frame = NULL;
     int channels = link->channels;
     int channel_layout_nb_channels = av_get_channel_layout_nb_channels(link->channel_layout);
+    int align = av_cpu_max_align();
 
     av_assert0(channels == channel_layout_nb_channels || !channel_layout_nb_channels);
 
     if (!link->frame_pool) {
         link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels,
-                                                    nb_samples, link->format, BUFFER_ALIGN);
+                                                    nb_samples, link->format, align);
         if (!link->frame_pool)
             return NULL;
     } else {
@@ -62,11 +61,11 @@ AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
         }
 
         if (pool_channels != channels || pool_nb_samples < nb_samples ||
-            pool_format != link->format || pool_align != BUFFER_ALIGN) {
+            pool_format != link->format || pool_align != align) {
 
             ff_frame_pool_uninit((FFFramePool **)&link->frame_pool);
             link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels,
-                                                        nb_samples, link->format, BUFFER_ALIGN);
+                                                        nb_samples, link->format, align);
             if (!link->frame_pool)
                 return NULL;
         }
diff --git a/libavfilter/framepool.c b/libavfilter/framepool.c
index 7c63807df3..5b510c9af9 100644
--- a/libavfilter/framepool.c
+++ b/libavfilter/framepool.c
@@ -76,27 +76,25 @@ FFFramePool *ff_frame_pool_video_init(AVBufferRef* (*alloc)(size_t size),
     }
 
     if (!pool->linesize[0]) {
-        for(i = 1; i <= align; i += i) {
-            ret = av_image_fill_linesizes(pool->linesize, pool->format,
-                                          FFALIGN(pool->width, i));
-            if (ret < 0) {
-                goto fail;
-            }
-            if (!(pool->linesize[0] & (pool->align - 1)))
-                break;
+        ret = av_image_fill_linesizes(pool->linesize, pool->format,
+                                      FFALIGN(pool->width, align));
+        if (ret < 0) {
+            goto fail;
         }
 
         for (i = 0; i < 4 && pool->linesize[i]; i++) {
             pool->linesize[i] = FFALIGN(pool->linesize[i], pool->align);
+            if ((pool->linesize[i] & (pool->align - 1)))
+                goto fail;
         }
     }
 
     for (i = 0; i < 4 && pool->linesize[i]; i++) {
-        int h = FFALIGN(pool->height, 32);
+        int h = pool->height;
         if (i == 1 || i == 2)
             h = AV_CEIL_RSHIFT(h, desc->log2_chroma_h);
 
-        pool->pools[i] = av_buffer_pool_init(pool->linesize[i] * h + 16 + 16 - 1,
+        pool->pools[i] = av_buffer_pool_init(pool->linesize[i] * h + align,
                                              alloc);
         if (!pool->pools[i])
             goto fail;
diff --git a/libavfilter/video.c b/libavfilter/video.c
index 7ef04144e4..fa3d588044 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 
 #include "libavutil/buffer.h"
+#include "libavutil/cpu.h"
 #include "libavutil/hwcontext.h"
 #include "libavutil/imgutils.h"
 
@@ -32,9 +33,6 @@
 #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);
@@ -46,6 +44,7 @@ AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
     int pool_width = 0;
     int pool_height = 0;
     int pool_align = 0;
+    int align = av_cpu_max_align();
     enum AVPixelFormat pool_format = AV_PIX_FMT_NONE;
 
     if (link->hw_frames_ctx &&
@@ -65,7 +64,7 @@ AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
 
     if (!link->frame_pool) {
         link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
-                                                    link->format, BUFFER_ALIGN);
+                                                    link->format, align);
         if (!link->frame_pool)
             return NULL;
     } else {
@@ -76,11 +75,11 @@ AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
         }
 
         if (pool_width != w || pool_height != h ||
-            pool_format != link->format || pool_align != BUFFER_ALIGN) {
+            pool_format != link->format || pool_align != align) {
 
             ff_frame_pool_uninit((FFFramePool **)&link->frame_pool);
             link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
-                                                        link->format, BUFFER_ALIGN);
+                                                        link->format, align);
             if (!link->frame_pool)
                 return NULL;
         }
-- 
2.33.0

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