LCOV - code coverage report
Current view: top level - libavfilter - video.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 28 39 71.8 %
Date: 2017-12-10 21:22:29 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright 2007 Bobby Bingham
       3             :  * Copyright Stefano Sabatini <stefasab gmail com>
       4             :  * Copyright Vitor Sessak <vitor1001 gmail com>
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       8             :  * FFmpeg is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public
      10             :  * License as published by the Free Software Foundation; either
      11             :  * version 2.1 of the License, or (at your option) any later version.
      12             :  *
      13             :  * FFmpeg is distributed in the hope that it will be useful,
      14             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public
      19             :  * License along with FFmpeg; if not, write to the Free Software
      20             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      21             :  */
      22             : 
      23             : #include <string.h>
      24             : #include <stdio.h>
      25             : 
      26             : #include "libavutil/avassert.h"
      27             : #include "libavutil/buffer.h"
      28             : #include "libavutil/hwcontext.h"
      29             : #include "libavutil/imgutils.h"
      30             : #include "libavutil/mem.h"
      31             : 
      32             : #include "avfilter.h"
      33             : #include "internal.h"
      34             : #include "video.h"
      35             : 
      36             : #define BUFFER_ALIGN 32
      37             : 
      38             : 
      39       37295 : AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
      40             : {
      41       37295 :     return ff_get_video_buffer(link->dst->outputs[0], w, h);
      42             : }
      43             : 
      44       42688 : AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
      45             : {
      46       42688 :     int pool_width = 0;
      47       42688 :     int pool_height = 0;
      48       42688 :     int pool_align = 0;
      49       42688 :     enum AVPixelFormat pool_format = AV_PIX_FMT_NONE;
      50             : 
      51       42688 :     if (link->hw_frames_ctx &&
      52           0 :         ((AVHWFramesContext*)link->hw_frames_ctx->data)->format == link->format) {
      53             :         int ret;
      54           0 :         AVFrame *frame = av_frame_alloc();
      55             : 
      56           0 :         if (!frame)
      57           0 :             return NULL;
      58             : 
      59           0 :         ret = av_hwframe_get_buffer(link->hw_frames_ctx, frame, 0);
      60           0 :         if (ret < 0)
      61           0 :             av_frame_free(&frame);
      62             : 
      63           0 :         return frame;
      64             :     }
      65             : 
      66       42688 :     if (!link->frame_pool) {
      67        3755 :         link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
      68        3755 :                                                     link->format, BUFFER_ALIGN);
      69        3755 :         if (!link->frame_pool)
      70           0 :             return NULL;
      71             :     } else {
      72       38933 :         if (ff_frame_pool_get_video_config(link->frame_pool,
      73             :                                            &pool_width, &pool_height,
      74             :                                            &pool_format, &pool_align) < 0) {
      75           0 :             return NULL;
      76             :         }
      77             : 
      78       77865 :         if (pool_width != w || pool_height != h ||
      79       77864 :             pool_format != link->format || pool_align != BUFFER_ALIGN) {
      80             : 
      81           1 :             ff_frame_pool_uninit((FFFramePool **)&link->frame_pool);
      82           1 :             link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
      83           1 :                                                         link->format, BUFFER_ALIGN);
      84           1 :             if (!link->frame_pool)
      85           0 :                 return NULL;
      86             :         }
      87             :     }
      88             : 
      89       42688 :     return ff_frame_pool_get(link->frame_pool);
      90             : }
      91             : 
      92       80557 : AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
      93             : {
      94       80557 :     AVFrame *ret = NULL;
      95             : 
      96       80557 :     FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0);
      97             : 
      98       80557 :     if (link->dstpad->get_video_buffer)
      99       37934 :         ret = link->dstpad->get_video_buffer(link, w, h);
     100             : 
     101       80557 :     if (!ret)
     102       42623 :         ret = ff_default_get_video_buffer(link, w, h);
     103             : 
     104       80557 :     return ret;
     105             : }

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