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Only draw frames that are newer than the last frame we drew

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This commit is contained in:
Cameron Gutman 2016-02-24 13:55:35 -05:00
parent eba9769378
commit 24cf97b0ae
1 changed files with 16 additions and 3 deletions
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17
viddec.cpp
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@ -13,6 +13,8 @@ static unsigned char* s_DecodeBuffer;
static unsigned int s_DecodeBufferLength;
static int s_LastTextureType;
static int s_LastTextureId;
static int s_NextDecodeFrameNumber;
static int s_LastDisplayFrameNumber;
static unsigned char s_LastSps[256];
static unsigned char s_LastPps[256];
static unsigned int s_LastSpsLength;
@ -146,6 +148,8 @@ void MoonlightInstance::VidDecSetup(int width, int height, int redrawRate, void*
s_LastTextureId = 0;
s_LastSpsLength = 0;
s_LastPpsLength = 0;
s_NextDecodeFrameNumber = 0;
s_LastDisplayFrameNumber = 0;
g_Instance->m_VideoDecoder->Initialize(g_Instance->m_Graphics3D,
PP_VIDEOPROFILE_H264HIGH,
@ -284,7 +288,7 @@ int MoonlightInstance::VidDecSubmitDecodeUnit(PDECODE_UNIT decodeUnit) {
}
// Start the decoding
g_Instance->m_VideoDecoder->Decode(0, offset, s_DecodeBuffer, pp::BlockUntilComplete());
g_Instance->m_VideoDecoder->Decode(s_NextDecodeFrameNumber++, offset, s_DecodeBuffer, pp::BlockUntilComplete());
return DR_OK;
}
@ -415,12 +419,21 @@ void MoonlightInstance::PictureReady(int32_t result, PP_VideoPicture picture) {
return;
}
// Ensure we only push newer frames onto the display queue
if (picture.decode_id > s_LastDisplayFrameNumber) {
m_PendingPictureQueue.push(picture);
s_LastDisplayFrameNumber = picture.decode_id;
}
else {
// This picture is older than the last one we displayed. Discard
// it without displaying.
g_Instance->m_VideoDecoder->RecyclePicture(picture);
}
g_Instance->m_VideoDecoder->GetPicture(
g_Instance->m_CallbackFactory.NewCallbackWithOutput(&MoonlightInstance::PictureReady));
if (!m_IsPainting) {
if (!m_IsPainting && !m_PendingPictureQueue.empty()) {
PaintPicture();
}
}