Control: tags -1 patch

Hi,

On 06/06/18 14:26, James Cowgill wrote:
> On Wed, 24 Jan 2018 22:26:50 +0000 jcowg...@debian.org wrote:
>> Source: opencv
>> Version: 3.2.0+dfsg-4
>> Severity: important
>> User: debian-multime...@lists.debian.org
>> Usertags: ffmpeg-3.5-transition
>>
>> Hi,
>>
>> Your package FTBFS with the upcoming version 3.5 of FFmpeg.
> 
> It seems upstream has fixed this in OpenCV 3.4. Do you know if there are
> plans to package 3.4 soon or should I try to backport the relevant
> patches to 3.2?

It turns out the backport was very easy - a single upstream PR contains
all the changes needed to get 3.2 building with FFmpeg 4.0. Patch attached.

James
Description: Fix FTBFS with FFmpeg 4.0
Origin: upstream, https://github.com/opencv/opencv/commit/b1d208891b9f6ae3968730b120a5d0dcbba679d0
Bug: https://github.com/opencv/opencv/pull/10011
Bug-Debian: https://bugs.debian.org/888386
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/

--- a/modules/videoio/src/cap_ffmpeg_impl.hpp
+++ b/modules/videoio/src/cap_ffmpeg_impl.hpp
@@ -149,6 +149,10 @@ extern "C" {
 #define AV_PIX_FMT_GRAY16BE PIX_FMT_GRAY16BE
 #endif
 
+#ifndef PKT_FLAG_KEY
+#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
+#endif
+
 #if LIBAVUTIL_BUILD >= (LIBAVUTIL_VERSION_MICRO >= 100 \
     ? CALC_FFMPEG_VERSION(52, 38, 100) : CALC_FFMPEG_VERSION(52, 13, 0))
 #define USE_AV_FRAME_GET_BUFFER 1
@@ -1538,7 +1542,11 @@ static AVStream *icv_add_video_stream_FF
     // some formats want stream headers to be seperate
     if(oc->oformat->flags & AVFMT_GLOBALHEADER)
     {
+#if LIBAVCODEC_BUILD > CALC_FFMPEG_VERSION(56, 35, 0)
+        c->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
+#else
         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+#endif
     }
 #endif
 
@@ -1566,23 +1574,24 @@ static int icv_av_write_frame_FFMPEG( AV
 #endif
     int ret = OPENCV_NO_FRAMES_WRITTEN_CODE;
 
-    if (oc->oformat->flags & AVFMT_RAWPICTURE) {
+#if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(57, 0, 0)
+    if (oc->oformat->flags & AVFMT_RAWPICTURE)
+    {
         /* raw video case. The API will change slightly in the near
            futur for that */
         AVPacket pkt;
         av_init_packet(&pkt);
 
-#ifndef PKT_FLAG_KEY
-#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
-#endif
-
         pkt.flags |= PKT_FLAG_KEY;
         pkt.stream_index= video_st->index;
         pkt.data= (uint8_t *)picture;
         pkt.size= sizeof(AVPicture);
 
         ret = av_write_frame(oc, &pkt);
-    } else {
+    }
+    else
+#endif
+    {
         /* encode the image */
         AVPacket pkt;
         av_init_packet(&pkt);
@@ -1740,7 +1749,9 @@ void CvVideoWriter_FFMPEG::close()
     /* write the trailer, if any */
     if(ok && oc)
     {
-        if( (oc->oformat->flags & AVFMT_RAWPICTURE) == 0 )
+#if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(57, 0, 0)
+        if (!(oc->oformat->flags & AVFMT_RAWPICTURE))
+#endif
         {
             for(;;)
             {
@@ -2036,7 +2047,11 @@ bool CvVideoWriter_FFMPEG::open( const c
 
     outbuf = NULL;
 
-    if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
+
+#if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(57, 0, 0)
+    if (!(oc->oformat->flags & AVFMT_RAWPICTURE))
+#endif
+    {
         /* allocate output buffer */
         /* assume we will never get codec output with more than 4 bytes per pixel... */
         outbuf_size = width*height*4;
@@ -2335,7 +2350,11 @@ AVStream* OutputMediaStream_FFMPEG::addV
         // some formats want stream headers to be seperate
         if (oc->oformat->flags & AVFMT_GLOBALHEADER)
         {
-            c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+            #if LIBAVCODEC_BUILD > CALC_FFMPEG_VERSION(56, 35, 0)
+                c->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
+            #else
+                c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+            #endif
         }
     #endif
 

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