From 29c293b100e046eaf82ceadbf676c0226b0e9e82 Mon Sep 17 00:00:00 2001
From: trav90 <travawine@protonmail.ch>
Date: Sat, 28 Apr 2018 14:00:09 -0500
Subject: Add support for libavcodec 58/FFmpeg 4.0

---
 dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp   |  6 ++++++
 dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp    | 15 ++++++++++-----
 dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp |  4 ++++
 3 files changed, 20 insertions(+), 5 deletions(-)

(limited to 'dom')

diff --git a/dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp b/dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp
index 0b31fb0f9..8cb5c8578 100644
--- a/dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp
+++ b/dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp
@@ -69,15 +69,21 @@ FFmpegDataDecoder<LIBAV_VER>::InitDecoder()
     mCodecContext->extradata_size = mExtraData->Length();
     // FFmpeg may use SIMD instructions to access the data which reads the
     // data in 32 bytes block. Must ensure we have enough data to read.
+#if LIBAVCODEC_VERSION_MAJOR >= 58
+    mExtraData->AppendElements(AV_INPUT_BUFFER_PADDING_SIZE);
+#else
     mExtraData->AppendElements(FF_INPUT_BUFFER_PADDING_SIZE);
+#endif
     mCodecContext->extradata = mExtraData->Elements();
   } else {
     mCodecContext->extradata_size = 0;
   }
 
+#if LIBAVCODEC_VERSION_MAJOR < 57
   if (codec->capabilities & CODEC_CAP_DR1) {
     mCodecContext->flags |= CODEC_FLAG_EMU_EDGE;
   }
+#endif
 
   if (mLib->avcodec_open2(mCodecContext, codec, nullptr) < 0) {
     NS_WARNING("Couldn't initialise ffmpeg decoder");
diff --git a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp
index f3dc00ad7..6302882a6 100644
--- a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp
+++ b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp
@@ -69,12 +69,14 @@ FFmpegLibWrapper::Link()
     AV_FUNC_55 = 1 << 2,
     AV_FUNC_56 = 1 << 3,
     AV_FUNC_57 = 1 << 4,
+    AV_FUNC_58 = 1 << 5,
     AV_FUNC_AVUTIL_53 = AV_FUNC_53 | AV_FUNC_AVUTIL_MASK,
     AV_FUNC_AVUTIL_54 = AV_FUNC_54 | AV_FUNC_AVUTIL_MASK,
     AV_FUNC_AVUTIL_55 = AV_FUNC_55 | AV_FUNC_AVUTIL_MASK,
     AV_FUNC_AVUTIL_56 = AV_FUNC_56 | AV_FUNC_AVUTIL_MASK,
     AV_FUNC_AVUTIL_57 = AV_FUNC_57 | AV_FUNC_AVUTIL_MASK,
-    AV_FUNC_AVCODEC_ALL = AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 | AV_FUNC_56 | AV_FUNC_57,
+    AV_FUNC_AVUTIL_58 = AV_FUNC_58 | AV_FUNC_AVUTIL_MASK,
+    AV_FUNC_AVCODEC_ALL = AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 | AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58,
     AV_FUNC_AVUTIL_ALL = AV_FUNC_AVCODEC_ALL | AV_FUNC_AVUTIL_MASK
   };
 
@@ -94,6 +96,9 @@ FFmpegLibWrapper::Link()
     case 57:
       version = AV_FUNC_57;
       break;
+    case 58:
+      version = AV_FUNC_58;
+      break;
     default:
       FFMPEG_LOG("Unknown avcodec version");
       Unlink();
@@ -142,9 +147,9 @@ FFmpegLibWrapper::Link()
   AV_FUNC(av_log_set_level, AV_FUNC_AVUTIL_ALL)
   AV_FUNC(av_malloc, AV_FUNC_AVUTIL_ALL)
   AV_FUNC(av_freep, AV_FUNC_AVUTIL_ALL)
-  AV_FUNC(av_frame_alloc, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57))
-  AV_FUNC(av_frame_free, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57))
-  AV_FUNC(av_frame_unref, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57))
+  AV_FUNC(av_frame_alloc, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 | AV_FUNC_AVUTIL_58))
+  AV_FUNC(av_frame_free, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 | AV_FUNC_AVUTIL_58))
+  AV_FUNC(av_frame_unref, (AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 | AV_FUNC_AVUTIL_58))
   AV_FUNC_OPTION(av_frame_get_colorspace, AV_FUNC_AVUTIL_ALL)
 #undef AV_FUNC
 #undef AV_FUNC_OPTION
@@ -175,4 +180,4 @@ FFmpegLibWrapper::Unlink()
   PodZero(this);
 }
 
-} // namespace mozilla
\ No newline at end of file
+} // namespace mozilla
diff --git a/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp b/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp
index fdbe77ef7..4671499e5 100644
--- a/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp
+++ b/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp
@@ -27,12 +27,15 @@ static FFmpegLibWrapper sLibAV;
 
 static const char* sLibs[] = {
 #if defined(XP_DARWIN)
+  "libavcodec.58.dylib",
   "libavcodec.57.dylib",
   "libavcodec.56.dylib",
   "libavcodec.55.dylib",
   "libavcodec.54.dylib",
   "libavcodec.53.dylib",
 #else
+  "libavcodec.so.58",
+  "libavcodec-ffmpeg.so.58",
   "libavcodec-ffmpeg.so.57",
   "libavcodec-ffmpeg.so.56",
   "libavcodec.so.57",
@@ -134,6 +137,7 @@ FFmpegRuntimeLinker::CreateDecoderModule()
     case 55:
     case 56: module = FFmpegDecoderModule<55>::Create(&sLibAV); break;
     case 57: module = FFmpegDecoderModule<57>::Create(&sLibAV); break;
+    case 58: module = FFmpegDecoderModule<58>::Create(&sLibAV); break;
     default: module = nullptr;
   }
   return module.forget();
-- 
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