# HG changeset patch
# User Vittorio Giovara <vittorio.giovara@gmail.com>
# Date 1446650373 -3600
# Node ID 210650fc7182bdd4e8fc0b3b70f7eeebc3b284b5
# Parent  7dd69f024c2aba0fc45157f10437a6e8c18e8999
Update libav API, keeping forward and backward compatibility

diff -r 7dd69f024c2a -r 210650fc7182 QTfrontend/util/LibavInteraction.cpp
--- a/QTfrontend/util/LibavInteraction.cpp	Wed Nov 04 13:42:09 2015 +0100
+++ b/QTfrontend/util/LibavInteraction.cpp	Wed Nov 04 16:19:33 2015 +0100
@@ -21,7 +21,9 @@
 #if VIDEOREC
 extern "C"
 {
+#include "libavcodec/avcodec.h"
 #include "libavformat/avformat.h"
+#include "libavutil/avutil.h"
 }
 
 #include <QVector>
@@ -30,13 +32,25 @@
 
 #include "HWApplication.h"
 
-#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54, 25, 0)
-#define CodecID AVCodecID
+// compatibility section
+#if LIBAVCODEC_VERSION_MAJOR < 55
+#define av_codec_is_encoder(x)          x->encode
+#define AVCodecID                       CodecID
+#endif
+
+#if LIBAVFORMAT_VERSION_MAJOR < 54
+#define avformat_find_stream_info(x, y) av_find_stream_info(x)
+#define avformat_close_input(x)         av_close_input_file(*(x))
+#endif
+
+#if LIBAVUTIL_VERSION_MAJOR < 54
+#define AVPixelFormat                   PixelFormat
+#define AV_PIX_FMT_YUV420P              PIX_FMT_YUV420P
 #endif
 
 struct Codec
 {
-    CodecID id;
+    AVCodecID id;
     bool isAudio;
     QString shortName; // used for identification
     QString longName; // used for displaying to user
@@ -56,7 +70,7 @@
 QMap<QString,Format> formats;
 
 // test if given format supports given codec
-bool FormatQueryCodec(AVOutputFormat *ofmt, enum CodecID codec_id)
+bool FormatQueryCodec(AVOutputFormat *ofmt, enum AVCodecID codec_id)
 {
 #if LIBAVFORMAT_VERSION_MAJOR >= 54
     return avformat_query_codec(ofmt, codec_id, FF_COMPLIANCE_NORMAL) == 1;
@@ -76,11 +90,7 @@
     AVCodec* pCodec = NULL;
     while ((pCodec = av_codec_next(pCodec)))
     {
-#if LIBAVCODEC_VERSION_MAJOR >= 54
         if (!av_codec_is_encoder(pCodec))
-#else
-        if (!pCodec->encode)
-#endif
             continue;
 
         if (pCodec->type != AVMEDIA_TYPE_VIDEO && pCodec->type != AVMEDIA_TYPE_AUDIO)
@@ -106,8 +116,8 @@
             if (!pCodec->pix_fmts)
                 continue;
             bool yuv420Supported = false;
-            for (const PixelFormat* pfmt = pCodec->pix_fmts; *pfmt != -1; pfmt++)
-                if (*pfmt == PIX_FMT_YUV420P)
+            for (const AVPixelFormat* pfmt = pCodec->pix_fmts; *pfmt != -1; pfmt++)
+                if (*pfmt == AV_PIX_FMT_YUV420P)
                 {
                     yuv420Supported = true;
                     break;
@@ -274,11 +284,7 @@
     QByteArray utf8path = filepath.toUtf8();
     if (avformat_open_input(&pContext, utf8path.data(), NULL, NULL) < 0)
         return "";
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-    if (av_find_stream_info(pContext) < 0)
-#else
     if (avformat_find_stream_info(pContext, NULL) < 0)
-#endif
         return "";
 
     int s = float(pContext->duration)/AV_TIME_BASE;
@@ -312,11 +318,7 @@
     AVDictionaryEntry* pComment = av_dict_get(pContext->metadata, "comment", NULL, 0);
     if (pComment)
         desc += QString("\n") + pComment->value;
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-    av_close_input_file(pContext);
-#else
     avformat_close_input(&pContext);
-#endif
     return desc;
 }
 
diff -r 7dd69f024c2a -r 210650fc7182 hedgewars/avwrapper/avwrapper.c
--- a/hedgewars/avwrapper/avwrapper.c	Wed Nov 04 13:42:09 2015 +0100
+++ b/hedgewars/avwrapper/avwrapper.c	Wed Nov 04 16:19:33 2015 +0100
@@ -21,13 +21,12 @@
 #include <stdint.h>
 #include <string.h>
 #include <stdarg.h>
+
+#include "libavcodec/avcodec.h"
 #include "libavformat/avformat.h"
+#include "libavutil/avutil.h"
 #include "libavutil/mathematics.h"
 
-#ifndef AVIO_FLAG_WRITE
-#define AVIO_FLAG_WRITE AVIO_WRONLY
-#endif
-
 #if (defined _MSC_VER)
 #define AVWRAP_DECL __declspec(dllexport)
 #elif ((__GNUC__ >= 3) && (!__EMX__) && (!sun))
@@ -57,11 +56,38 @@
 static int g_NumSamples;
 
 
+// compatibility section
 #if LIBAVCODEC_VERSION_MAJOR < 54
 #define OUTBUFFER_SIZE 200000
 static uint8_t g_OutBuffer[OUTBUFFER_SIZE];
+#define avcodec_open2(x, y, z)              avcodec_open(x, y)
 #endif
 
+#if LIBAVCODEC_VERSION_MAJOR < 56
+#define av_frame_alloc                      avcodec_alloc_frame
+#define av_frame_free                       av_freep
+#endif
+
+#if LIBAVCODEC_VERSION_MAJOR < 57
+#define AV_CODEC_CAP_DELAY                  CODEC_CAP_DELAY
+#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE    CODEC_CAP_VARIABLE_FRAME_SIZE
+#define AV_CODEC_FLAG_GLOBAL_HEADER         CODEC_FLAG_GLOBAL_HEADER
+#define AV_CODEC_FLAG_QSCALE                CODEC_FLAG_QSCALE
+#endif
+
+#if LIBAVFORMAT_VERSION_MAJOR < 53
+#define AVIO_FLAG_WRITE                     AVIO_WRONLY
+#endif
+
+#if LIBAVFORMAT_VERSION_MAJOR < 54
+#define avformat_new_stream(x, y)           av_new_stream(x, y->type == AVMEDIA_TYPE_AUDIO)
+#endif
+
+#if LIBAVUTIL_VERSION_MAJOR < 54
+#define AV_PIX_FMT_YUV420P                  PIX_FMT_YUV420P
+#endif
+
+
 // pointer to function from hwengine (uUtils.pas)
 static void (*AddFileLogRaw)(const char* pString);
 
@@ -105,11 +131,7 @@
 
 static void AddAudioStream()
 {
-#if LIBAVFORMAT_VERSION_MAJOR >= 53
     g_pAStream = avformat_new_stream(g_pContainer, g_pACodec);
-#else
-    g_pAStream = av_new_stream(g_pContainer, 1);
-#endif
     if(!g_pAStream)
     {
         Log("Could not allocate audio stream\n");
@@ -131,26 +153,22 @@
     g_pAudio->bit_rate = 160000;
 
     // for codecs that support variable bitrate use it, it should be better
-    g_pAudio->flags |= CODEC_FLAG_QSCALE;
+    g_pAudio->flags |= AV_CODEC_FLAG_QSCALE;
     g_pAudio->global_quality = 1*FF_QP2LAMBDA;
 
     // some formats want stream headers to be separate
     if (g_pFormat->flags & AVFMT_GLOBALHEADER)
-        g_pAudio->flags |= CODEC_FLAG_GLOBAL_HEADER;
+        g_pAudio->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 
     // open it
-#if LIBAVCODEC_VERSION_MAJOR >= 53
     if (avcodec_open2(g_pAudio, g_pACodec, NULL) < 0)
-#else
-    if (avcodec_open(g_pAudio, g_pACodec) < 0)
-#endif
     {
         Log("Could not open audio codec %s\n", g_pACodec->long_name);
         return;
     }
 
 #if LIBAVCODEC_VERSION_MAJOR >= 54
-    if (g_pACodec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)
+    if (g_pACodec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
 #else
     if (g_pAudio->frame_size == 0)
 #endif
@@ -158,7 +176,7 @@
     else
         g_NumSamples = g_pAudio->frame_size;
     g_pSamples = (int16_t*)av_malloc(g_NumSamples*g_Channels*sizeof(int16_t));
-    g_pAFrame = avcodec_alloc_frame();
+    g_pAFrame = av_frame_alloc();
     if (!g_pAFrame)
     {
         Log("Could not allocate frame\n");
@@ -217,11 +235,7 @@
 // add a video output stream
 static int AddVideoStream()
 {
-#if LIBAVFORMAT_VERSION_MAJOR >= 53
     g_pVStream = avformat_new_stream(g_pContainer, g_pVCodec);
-#else
-    g_pVStream = av_new_stream(g_pContainer, 0);
-#endif
     if (!g_pVStream)
         return FatalError("Could not allocate video stream");
 
@@ -241,20 +255,20 @@
     g_pVideo->time_base.den = g_Framerate.num;
     g_pVideo->time_base.num = g_Framerate.den;
     //g_pVideo->gop_size = 12; /* emit one intra frame every twelve frames at most */
-    g_pVideo->pix_fmt = PIX_FMT_YUV420P;
+    g_pVideo->pix_fmt = AV_PIX_FMT_YUV420P;
 
     // set quality
     if (g_VQuality > 100)
         g_pVideo->bit_rate = g_VQuality;
     else
     {
-        g_pVideo->flags |= CODEC_FLAG_QSCALE;
+        g_pVideo->flags |= AV_CODEC_FLAG_QSCALE;
         g_pVideo->global_quality = g_VQuality*FF_QP2LAMBDA;
     }
 
     // some formats want stream headers to be separate
     if (g_pFormat->flags & AVFMT_GLOBALHEADER)
-        g_pVideo->flags |= CODEC_FLAG_GLOBAL_HEADER;
+        g_pVideo->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 
 #if LIBAVCODEC_VERSION_MAJOR < 53
     // for some versions of ffmpeg x264 options must be set explicitly
@@ -292,14 +306,12 @@
     AVDictionary* pDict = NULL;
     if (strcmp(g_pVCodec->name, "libx264") == 0)
         av_dict_set(&pDict, "preset", "medium", 0);
+#endif
 
     if (avcodec_open2(g_pVideo, g_pVCodec, &pDict) < 0)
-#else
-    if (avcodec_open(g_pVideo, g_pVCodec) < 0)
-#endif
         return FatalError("Could not open video codec %s", g_pVCodec->long_name);
 
-    g_pVFrame = avcodec_alloc_frame();
+    g_pVFrame = av_frame_alloc();
     if (!g_pVFrame)
         return FatalError("Could not allocate frame");
 
@@ -317,10 +329,10 @@
     // write interleaved audio frame
     if (g_pAStream)
     {
-        VideoTime = (double)g_pVStream->pts.val*g_pVStream->time_base.num/g_pVStream->time_base.den;
+        VideoTime = (double)g_pVFrame->pts * g_pVStream->time_base.num/g_pVStream->time_base.den;
         do
         {
-            AudioTime = (double)g_pAStream->pts.val*g_pAStream->time_base.num/g_pAStream->time_base.den;
+            AudioTime = (double)g_pAFrame->pts * g_pAStream->time_base.num/g_pAStream->time_base.den;
             ret = WriteAudioFrame();
         }
         while (AudioTime < VideoTime && ret);
@@ -496,7 +508,7 @@
 {
     int ret;
     // output buffered frames
-    if (g_pVCodec->capabilities & CODEC_CAP_DELAY)
+    if (g_pVCodec->capabilities & AV_CODEC_CAP_DELAY)
     {
         do
             ret = WriteFrame(NULL);
@@ -526,14 +538,14 @@
         avcodec_close(g_pVideo);
         av_free(g_pVideo);
         av_free(g_pVStream);
-        av_free(g_pVFrame);
+        av_frame_free(&g_pVFrame);
     }
     if (g_pAStream)
     {
         avcodec_close(g_pAudio);
         av_free(g_pAudio);
         av_free(g_pAStream);
-        av_free(g_pAFrame);
+        av_frame_free(&g_pAFrame);
         av_free(g_pSamples);
         fclose(g_pSoundFile);
     }