Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h
new file mode 100644
index 0000000000..22dc70f140
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h
@@ -0,0 +1,155 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef __FFmpegLibWrapper_h__
+#define __FFmpegLibWrapper_h__
+
+#include "FFmpegRDFTTypes.h"  // for AvRdftInitFn, etc.
+#include "mozilla/Attributes.h"
+#include "mozilla/Types.h"
+
+struct AVCodec;
+struct AVCodecContext;
+struct AVFrame;
+struct AVPacket;
+struct AVDictionary;
+struct AVCodecParserContext;
+struct PRLibrary;
+#ifdef MOZ_WAYLAND
+struct AVCodecHWConfig;
+struct AVBufferRef;
+#endif
+
+namespace mozilla {
+
+struct MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS FFmpegLibWrapper {
+  // The class is used only in static storage and so is zero initialized.
+  FFmpegLibWrapper() = default;
+  // The libraries are not unloaded in the destructor, because doing so would
+  // require a static constructor to register the static destructor.  As the
+  // class is in static storage, the destructor would only run on shutdown
+  // anyway.
+  ~FFmpegLibWrapper() = default;
+
+  enum class LinkResult {
+    Success,
+    NoProvidedLib,
+    NoAVCodecVersion,
+    CannotUseLibAV57,
+    BlockedOldLibAVVersion,
+    UnknownFutureLibAVVersion,
+    UnknownFutureFFMpegVersion,
+    UnknownOlderFFMpegVersion,
+    MissingFFMpegFunction,
+    MissingLibAVFunction,
+  };
+  // Examine mAVCodecLib, mAVUtilLib and mVALib, and attempt to resolve
+  // all symbols.
+  // Upon failure, the entire object will be reset and any attached libraries
+  // will be unlinked.
+  LinkResult Link();
+
+  // Reset the wrapper and unlink all attached libraries.
+  void Unlink();
+
+#ifdef MOZ_WAYLAND
+  // Check if mVALib are available and we can use HW decode.
+  bool IsVAAPIAvailable();
+  void LinkVAAPILibs();
+#endif
+
+  // indicate the version of libavcodec linked to.
+  // 0 indicates that the function wasn't initialized with Link().
+  int mVersion;
+
+  // libavcodec
+  unsigned (*avcodec_version)();
+  int (*av_lockmgr_register)(int (*cb)(void** mutex, int op));
+  AVCodecContext* (*avcodec_alloc_context3)(const AVCodec* codec);
+  int (*avcodec_close)(AVCodecContext* avctx);
+  int (*avcodec_decode_audio4)(AVCodecContext* avctx, AVFrame* frame,
+                               int* got_frame_ptr, const AVPacket* avpkt);
+  int (*avcodec_decode_video2)(AVCodecContext* avctx, AVFrame* picture,
+                               int* got_picture_ptr, const AVPacket* avpkt);
+  AVCodec* (*avcodec_find_decoder)(int id);
+  void (*avcodec_flush_buffers)(AVCodecContext* avctx);
+  int (*avcodec_open2)(AVCodecContext* avctx, const AVCodec* codec,
+                       AVDictionary** options);
+  void (*avcodec_register_all)();
+  void (*av_init_packet)(AVPacket* pkt);
+  AVCodecParserContext* (*av_parser_init)(int codec_id);
+  void (*av_parser_close)(AVCodecParserContext* s);
+  int (*av_parser_parse2)(AVCodecParserContext* s, AVCodecContext* avctx,
+                          uint8_t** poutbuf, int* poutbuf_size,
+                          const uint8_t* buf, int buf_size, int64_t pts,
+                          int64_t dts, int64_t pos);
+
+  // only used in libavcodec <= 54
+  AVFrame* (*avcodec_alloc_frame)();
+  void (*avcodec_get_frame_defaults)(AVFrame* pic);
+  // libavcodec v54 only
+  void (*avcodec_free_frame)(AVFrame** frame);
+
+  // libavcodec v58 and later only
+  int (*avcodec_send_packet)(AVCodecContext* avctx, const AVPacket* avpkt);
+  int (*avcodec_receive_frame)(AVCodecContext* avctx, AVFrame* frame);
+
+  // libavcodec optional
+  AvRdftInitFn av_rdft_init;
+  AvRdftCalcFn av_rdft_calc;
+  AvRdftEndFn av_rdft_end;
+
+  // libavutil
+  void (*av_log_set_level)(int level);
+  void* (*av_malloc)(size_t size);
+  void (*av_freep)(void* ptr);
+
+  // libavutil v55 and later only
+  AVFrame* (*av_frame_alloc)();
+  void (*av_frame_free)(AVFrame** frame);
+  void (*av_frame_unref)(AVFrame* frame);
+
+  // libavutil optional
+  int (*av_frame_get_colorspace)(const AVFrame* frame);
+  int (*av_frame_get_color_range)(const AVFrame* frame);
+
+#ifdef MOZ_WAYLAND
+  const AVCodecHWConfig* (*avcodec_get_hw_config)(const AVCodec* codec,
+                                                  int index);
+  AVBufferRef* (*av_hwdevice_ctx_alloc)(int);
+  int (*av_hwdevice_ctx_init)(AVBufferRef* ref);
+
+  AVBufferRef* (*av_buffer_ref)(AVBufferRef* buf);
+  void (*av_buffer_unref)(AVBufferRef** buf);
+  int (*av_hwframe_transfer_get_formats)(AVBufferRef* hwframe_ctx, int dir,
+                                         int** formats, int flags);
+  int (*av_hwdevice_ctx_create_derived)(AVBufferRef** dst_ctx, int type,
+                                        AVBufferRef* src_ctx, int flags);
+  AVBufferRef* (*av_hwframe_ctx_alloc)(AVBufferRef* device_ctx);
+  int (*av_dict_set)(AVDictionary** pm, const char* key, const char* value,
+                     int flags);
+  void (*av_dict_free)(AVDictionary** m);
+
+  int (*vaExportSurfaceHandle)(void*, unsigned int, uint32_t, uint32_t, void*);
+  int (*vaSyncSurface)(void*, unsigned int);
+  int (*vaInitialize)(void* dpy, int* major_version, int* minor_version);
+  int (*vaTerminate)(void* dpy);
+  void* (*vaGetDisplayWl)(struct wl_display* display);
+  void* (*vaGetDisplayDRM)(int fd);
+#endif
+
+  PRLibrary* mAVCodecLib;
+  PRLibrary* mAVUtilLib;
+#ifdef MOZ_WAYLAND
+  PRLibrary* mVALib;
+  PRLibrary* mVALibWayland;
+  PRLibrary* mVALibDrm;
+#endif
+
+ private:
+};
+
+}  // namespace mozilla
+
+#endif  // FFmpegLibWrapper