public void InitialiseDecoder()
{
_vpxDecodeCtx = new VpxCodecCtx();
var initDecoderRes = vpx_decoder.VpxCodecDecInitVer(_vpxDecodeCtx, vp8dx.VpxCodecVp8Dx(), null, 0, VPX_DECODER_ABI_VERSION);
if (initDecoderRes != VpxCodecErrT.VPX_CODEC_OK)
{
throw new ApplicationException($"Failed to initialise VP8 decoder, {vpx_codec.VpxCodecErrToString(initDecoderRes)}.");
}
}
// Setting config parameters in Chromium source.
// https://chromium.googlesource.com/external/webrtc/stable/src/+/b8671cb0516ec9f6c7fe22a6bbe331d5b091cdbb/modules/video_coding/codecs/vp8/vp8.cc
// Updated link 15 Jun 2020.
// https://chromium.googlesource.com/external/webrtc/stable/src/+/refs/heads/master/modules/video_coding/codecs/vp8/vp8_impl.cc
public void InitialiseEncoder(uint width, uint height)
{
_encodeWidth = width;
_encodeHeight = height;
_vpxEncodeCtx = new VpxCodecCtx();
_vpxEncodeImg = new VpxImage();
VpxCodecEncCfg vp8EncoderCfg = new VpxCodecEncCfg();
var setConfigRes = vpx_encoder.VpxCodecEncConfigDefault(vp8cx.VpxCodecVp8Cx(), vp8EncoderCfg, 0);
if (setConfigRes != VpxCodecErrT.VPX_CODEC_OK)
{
throw new ApplicationException($"Failed to set VP8 encoder configuration to default values, {setConfigRes}.");
}
vp8EncoderCfg.GW = _encodeWidth;
vp8EncoderCfg.GH = _encodeHeight;
// vpxConfig.g_w = width;
// vpxConfig.g_h = height;
// vpxConfig.rc_target_bitrate = _rc_target_bitrate;// 300; // 5000; // in kbps.
// vpxConfig.rc_min_quantizer = _rc_min_quantizer;// 20; // 50;
// vpxConfig.rc_max_quantizer = _rc_max_quantizer;// 30; // 60;
// vpxConfig.g_pass = VPX_RC_ONE_PASS;
// if (_rc_is_cbr)
// {
// vpxConfig.rc_end_usage = VPX_CBR;
// }
// else
// {
// vpxConfig.rc_end_usage = VPX_VBR;
// }
// vpxConfig.g_error_resilient = VPX_ERROR_RESILIENT_DEFAULT;
// vpxConfig.g_lag_in_frames = 0;
// vpxConfig.rc_resize_allowed = 0;
// vpxConfig.kf_max_dist = 20;
var initEncoderRes = vpx_encoder.VpxCodecEncInitVer(_vpxEncodeCtx, vp8cx.VpxCodecVp8Cx(), vp8EncoderCfg, 0, VPX_ENCODER_ABI_VERSION);
if (initEncoderRes != VpxCodecErrT.VPX_CODEC_OK)
{
throw new ApplicationException($"Failed to initialise VP8 encoder, {vpx_codec.VpxCodecErrToString(initEncoderRes)}.");
}
//VpxImage.VpxImgAlloc(_vpxEncodeImg, VpxImgFmt.VPX_IMG_FMT_I420, _encodeWidth, _encodeHeight, 1);
VpxImage.VpxImgAlloc(_vpxEncodeImg, VpxImgFmt.VPX_IMG_FMT_NV12, _encodeWidth, _encodeHeight, 1);
}
