Codec.FFmpeg.Common

Documentation

open_codec :: AVCodecContext -> AVCodec -> Ptr AVDictionary -> IO CInt

av_frame_alloc :: IO AVFrame

av_frame_get_buffer :: AVFrame -> CInt -> IO CInt

av_frame_free :: Ptr AVFrame -> IO ()

codec_close :: AVCodecContext -> IO CInt

init_packet :: AVPacket -> IO ()

free_packet :: AVPacket -> IO ()

av_free :: Ptr () -> IO ()

sws_getCachedContext :: SwsContext -> CInt -> CInt -> AVPixelFormat -> CInt -> CInt -> AVPixelFormat -> SwsAlgorithm -> Ptr () -> Ptr () -> Ptr CDouble -> IO SwsContext

sws_scale :: SwsContext -> Ptr (Ptr CUChar) -> Ptr CInt -> CInt -> CInt -> Ptr (Ptr CUChar) -> Ptr CInt -> IO CInt

Utility functions

wrapIOError :: (MonadIO m, Error e, MonadError e m) => IO a -> m a

Catch an IOException from an IO action and re-throw it in a wrapping monad transformer.

errMsg :: (Error e, MonadError e m) => String -> m a

Throw an error with a String message.

Wrappers that may throw IOExceptions.

frame_alloc_check :: IO AVFrame

Allocate an AVFrame and set its fields to default values.

frame_get_buffer_check :: AVFrame -> CInt -> IO ()

Allocate new buffer(s) for audio or video data with the required alignment. Note, for video frames, pixel format, width, and height must be set before calling this function. For audio frames, sample format, nb_samples, and channel_layout must be set.