public DecoderStream(MediaFileReader file, ref AVStream stream)
{
// Initialize instance variables
m_disposed = false;
m_position = m_bufferUsedSize = 0;
m_file = file;
m_avStream = stream;
m_avCodecCtx = *m_avStream.codec;
// Open the decoding codec
AVCodec *avCodec = FFmpeg.avcodec_find_decoder(m_avCodecCtx.codec_id);
if (avCodec == null)
{
throw new DecoderException("No decoder found");
}
if (FFmpeg.avcodec_open(ref m_avCodecCtx, avCodec) < 0)
{
throw new DecoderException("Error opening codec");
}
m_codecOpen = true;
}
/// <summary>
/// Constructs a new VideoDecoderStream over a specific filename.
/// </summary>
/// <param name="Filename">File to decode</param>
internal VideoDecoderStream(MediaFileReader file, ref AVStream stream)
: base(file, ref stream)
{
// allocate video frame
m_avFrame = FFmpeg.avcodec_alloc_frame();
if (FFmpeg.avpicture_alloc(out m_avPicture, m_avCodecCtx.pix_fmt, m_avCodecCtx.width, m_avCodecCtx.height) != 0)
throw new DecoderException("Error allocating AVPicture");
m_avPicture_allocated = true;
int buffersize = FFmpeg.avpicture_get_size(m_avCodecCtx.pix_fmt, m_avCodecCtx.width, m_avCodecCtx.height);
if (buffersize <= 0)
throw new DecoderException("Invalid size returned by avpicture_get_size");
m_buffer = new byte[buffersize];
}
/// <summary>
/// Constructs a new VideoDecoderStream over a specific filename.
/// </summary>
/// <param name="Filename">File to decode</param>
internal VideoDecoderStream(MediaFileReader file, ref AVStream stream)
: base(file, ref stream)
{
// allocate video frame
m_avFrame = FFmpeg.avcodec_alloc_frame();
if (FFmpeg.avpicture_alloc(out m_avPicture, m_avCodecCtx.pix_fmt, m_avCodecCtx.width, m_avCodecCtx.height) != 0)
{
throw new DecoderException("Error allocating AVPicture");
}
m_avPicture_allocated = true;
int buffersize = FFmpeg.avpicture_get_size(m_avCodecCtx.pix_fmt, m_avCodecCtx.width, m_avCodecCtx.height);
if (buffersize <= 0)
{
throw new DecoderException("Invalid size returned by avpicture_get_size");
}
m_buffer = new byte[buffersize];
}
public DecoderStream(MediaFileReader file, ref AVStream stream)
{
// Initialize instance variables
m_disposed = false;
m_position = m_bufferUsedSize = 0;
m_file = file;
m_avStream = stream;
m_avCodecCtx = *m_avStream.codec;
// Open the decoding codec
AVCodec* avCodec = FFmpeg.avcodec_find_decoder(m_avCodecCtx.codec_id);
if (avCodec == null)
throw new DecoderException("No decoder found");
if (FFmpeg.avcodec_open(ref m_avCodecCtx, avCodec) < 0)
throw new DecoderException("Error opening codec");
m_codecOpen = true;
}
internal AudioDecoderStream(MediaFileReader file, ref AVStream stream)
: base(file, ref stream)
{
m_buffer = new byte[FFmpeg.AVCODEC_MAX_AUDIO_FRAME_SIZE];
}
internal AudioDecoderStream(MediaFileReader file, ref AVStream stream)
: base(file, ref stream)
{
m_buffer = new byte[FFmpeg.AVCODEC_MAX_AUDIO_FRAME_SIZE];
}
