internal static unsafe void AvformatOpenInput(AVFormatContext **formatContext, AvioContext avioContext)
{
(*formatContext)->pb = (AVIOContext *)avioContext.ContextPtr;
int result = ffmpeg.avformat_open_input(formatContext, "DUMMY-FILENAME", null, null);
FfmpegException.Try(result, "avformat_open_input");
}
internal static unsafe int AvSamplesGetBufferSize(AVFrame *frame)
{
int result = ffmpeg.av_samples_get_buffer_size(null, frame->channels, frame->nb_samples,
(AVSampleFormat)frame->format, 1);
FfmpegException.Try(result, "av_samples_get_buffer_size");
return(result);
}
internal static unsafe bool AvCodecDecodeAudio4(AVCodecContext *codecContext, AVFrame *frame, AVPacket *packet,
out int bytesConsumed)
{
int gotFrame;
int result = ffmpeg.avcodec_decode_audio4(codecContext, frame, &gotFrame, packet);
FfmpegException.Try(result, "avcodec_decode_audio4");
bytesConsumed = result;
return(gotFrame != 0);
}
internal static unsafe int AvFindBestStreamInfo(AVFormatContext *formatContext)
{
int result = ffmpeg.av_find_best_stream(
formatContext,
AVMediaType.AVMEDIA_TYPE_AUDIO,
-1, -1, null, 0);
FfmpegException.Try(result, "av_find_best_stream");
return(result); //stream index
}
internal static unsafe void AvCodecOpen(AVCodecContext *codecContext, AVCodec *codec)
{
int result = ffmpeg.avcodec_open2(codecContext, codec, null);
FfmpegException.Try(result, "avcodec_open2");
}
internal static unsafe void AvFormatFindStreamInfo(AVFormatContext *formatContext)
{
int result = ffmpeg.avformat_find_stream_info(formatContext, null);
FfmpegException.Try(result, "avformat_find_stream_info");
}
internal static unsafe void AvformatOpenInput(AVFormatContext **formatContext, string url)
{
int result = ffmpeg.avformat_open_input(formatContext, url, null, null);
FfmpegException.Try(result, "avformat_open_input");
}