2 #define _FFMPEG_RAII_H 1
4 // Some helpers to make RAII versions of FFmpeg objects.
5 // The cleanup functions don't interact all that well with unique_ptr,
6 // so things get a bit messy and verbose, but overall it's worth it to ensure
7 // we never leak things by accident in error paths.
9 // This does not cover any of the types that can actually be declared as
10 // a unique_ptr with no helper functions for deleter.
15 struct AVCodecContext;
16 struct AVCodecParameters;
18 struct AVFormatContext;
24 struct avformat_close_input_unique {
25 void operator() (AVFormatContext *format_ctx) const;
28 typedef std::unique_ptr<AVFormatContext, avformat_close_input_unique>
29 AVFormatContextWithCloser;
31 AVFormatContextWithCloser avformat_open_input_unique(
32 const char *pathname, AVInputFormat *fmt, AVDictionary **options);
36 struct avcodec_free_context_unique {
37 void operator() (AVCodecContext *ctx) const;
40 typedef std::unique_ptr<AVCodecContext, avcodec_free_context_unique>
41 AVCodecContextWithDeleter;
43 AVCodecContextWithDeleter avcodec_alloc_context3_unique(const AVCodec *codec);
47 struct avcodec_parameters_free_unique {
48 void operator() (AVCodecParameters *codec_par) const;
51 typedef std::unique_ptr<AVCodecParameters, avcodec_parameters_free_unique>
52 AVCodecParametersWithDeleter;
56 struct av_frame_free_unique {
57 void operator() (AVFrame *frame) const;
60 typedef std::unique_ptr<AVFrame, av_frame_free_unique>
63 AVFrameWithDeleter av_frame_alloc_unique();
66 struct sws_free_context_unique {
67 void operator() (SwsContext *context) const;
70 typedef std::unique_ptr<SwsContext, sws_free_context_unique>
71 SwsContextWithDeleter;
73 #endif // !defined(_FFMPEG_RAII_H)