зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
3.2 KiB
C++
101 строка
3.2 KiB
C++
/* 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 "mozilla/Attributes.h"
|
|
#include "mozilla/Types.h"
|
|
|
|
struct AVCodec;
|
|
struct AVCodecContext;
|
|
struct AVFrame;
|
|
struct AVPacket;
|
|
struct AVDictionary;
|
|
struct AVCodecParserContext;
|
|
struct PRLibrary;
|
|
|
|
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 and mAVUtilLib, 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();
|
|
|
|
// 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);
|
|
|
|
// 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);
|
|
|
|
PRLibrary* mAVCodecLib;
|
|
PRLibrary* mAVUtilLib;
|
|
|
|
private:
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // FFmpegLibWrapper
|