Hi all,
I am implementing h264 hardware encoder via AMD Media SDK. everything is worked well except that setting the encode parameter "GopSize" isn't usabled, since i need to got ouput h264 stream every 1 sec is an I frame. The platform and driver listed below:
OS: window 7
platform: Intel Core i5 & AMD Radeon HD 7700 series
GPU driver Ver: 12.104.0.0 (2013/3/18)
AMD Media SDK Ver: 1.1
the code of main parameters setting before called Init() listed below:
result = AMFCreateComponent(m_context, AMFVideoEncoderVCE_AVC, &m_encoder);
if (result != AMF_OK) {
LOGE(TAG, "create AVC encoder failed\n");
return false;
}
LOGV(TAG, "created AVC encoder component\n");
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_USAGE, usage);
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_TARGET_BITRATE, m_encodeParam.bitrate);
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_FRAMESIZE, ::AMFConstructSize(m_encodeParam.width, m_encodeParam.height));
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_FRAMERATE, ::AMFConstructRate(m_encodeParam.framerate, 1));
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_B_PIC_PATTERN, 0);
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_QUALITY_PRESET, AMF_VIDEO_ENCODER_QUALITY_PRESET_SPEED);
result = m_encoder->Init(m_formatIn, m_encodeParam.width, m_encodeParam.height);
if (result != AMF_OK) {
LOGE(TAG, "init AVC encoder failed\n");
return false;
}
besides, referred to Media SDK reference manual, setting dynamic parameter (gopsize, idrperiod, etc) every 30 frames before called SubmitInput() to submit encode frame, see below:
if (submitCount % m_encodeParam.framerate == 0) {
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_IDR_PERIOD, 0);
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_GOP_SIZE, m_encodeParam.gopSize);
CHECK_SET_PROPERTY(m_encoder, AMF_VIDEO_ENCODER_FRAMERATE, ::AMFConstructRate(m_encodeParam.framerate, 1));
CHECK_SET_PROPERTY(surfaceIn, AMF_VIDEO_ENCODER_FORCE_PICTURE_TYPE, L"I");
}
result = m_encoder->SubmitInput(surfaceIn);
submitCount++;
unfortunately, the nal type of ouput encoded frame are always like this: sps, pps, idr , p, p, ...., p.
please tell me which step is wrong.
hope for your help.
Thx
newjor
