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Improve unsupported FPS options and performance

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This commit is contained in:
Cameron Gutman 2018-09-08 15:09:46 -07:00
parent 64a08f0533
commit c9a7c15f98
7 changed files with 110 additions and 65 deletions
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16
app/gui/SettingsView.qml
View File

@ -178,17 +178,28 @@ ScrollView {
fpsListModel.append({"text": "30 FPS", "video_fps": "30"})
fpsListModel.append({"text": "60 FPS", "video_fps": "60"})
// Add unsupported FPS values that come before the display max FPS
if (prefs.unsupportedFps) {
if (max_fps > 90) {
fpsListModel.append({"text": "90 FPS (Unsupported)", "video_fps": "90"})
}
if (max_fps > 120) {
fpsListModel.append({"text": "120 FPS (Unsupported)", "video_fps": "120"})
}
}
// Use 64 as the cutoff for adding a separate option to
// handle wonky displays that report just over 60 Hz.
if (max_fps > 64) {
fpsListModel.append({"text": max_fps+" FPS", "video_fps": ""+max_fps})
}
// Add unsupported FPS values that come after the display max FPS
if (prefs.unsupportedFps) {
if (max_fps !== 90) {
if (max_fps < 90) {
fpsListModel.append({"text": "90 FPS (Unsupported)", "video_fps": "90"})
}
if (max_fps !== 120) {
if (max_fps < 120) {
fpsListModel.append({"text": "120 FPS (Unsupported)", "video_fps": "120"})
}
}
@ -325,7 +336,6 @@ ScrollView {
id: vsyncCheck
text: "<font color=\"white\">Enable V-Sync</font>"
font.pointSize: 12
visible: prefs.windowMode === StreamingPreferences.WM_FULLSCREEN
checked: prefs.enableVsync
onCheckedChanged: {
prefs.enableVsync = checked

19
app/streaming/session.cpp
View File

@ -417,6 +417,10 @@ bool Session::validateLaunch()
if (m_Preferences.unsupportedFps && m_StreamConfig.fps > 60) {
emitLaunchWarning("Using unsupported FPS options may cause stuttering or lag.");
if (m_Preferences.enableVsync) {
emitLaunchWarning("V-sync will be disabled when streaming at a higher frame rate than the display.");
}
}
if (m_StreamConfig.supportsHevc) {
@ -1001,12 +1005,24 @@ void Session::exec(int displayOriginX, int displayOriginY)
SDL_FlushEvent(SDL_RENDER_DEVICE_RESET);
SDL_FlushEvent(SDL_RENDER_TARGETS_RESET);
{
// If the stream exceeds the display refresh rate (plus some slack),
// forcefully disable V-sync to allow the stream to render faster
// than the display.
int displayHz = StreamUtils::getDisplayRefreshRate(m_Window);
bool enableVsync = m_Preferences.enableVsync;
if (displayHz + 5 < m_StreamConfig.fps) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Disabling V-sync because refresh rate limit exceeded");
enableVsync = false;
}
// Choose a new decoder (hopefully the same one, but possibly
// not if a GPU was removed or something).
if (!chooseDecoder(m_Preferences.videoDecoderSelection,
m_Window, m_ActiveVideoFormat, m_ActiveVideoWidth,
m_ActiveVideoHeight, m_ActiveVideoFrameRate,
m_Preferences.enableVsync,
enableVsync,
s_ActiveSession->m_VideoDecoder)) {
SDL_AtomicUnlock(&m_DecoderLock);
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
@ -1014,6 +1030,7 @@ void Session::exec(int displayOriginX, int displayOriginY)
emit displayLaunchError("Unable to initialize video decoder. Please check your streaming settings and try again.");
goto DispatchDeferredCleanup;
}
}
// Request an IDR frame to complete the reset
m_NeedsIdr = true;

46
app/streaming/streamutils.cpp
View File

@ -25,6 +25,52 @@ void StreamUtils::scaleSourceToDestinationSurface(SDL_Rect* src, SDL_Rect* dst)
}
}
int StreamUtils::getDisplayRefreshRate(SDL_Window* window)
{
int displayIndex = SDL_GetWindowDisplayIndex(window);
if (displayIndex < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Failed to get current display: %s",
SDL_GetError());
// Assume display 0 if it fails
displayIndex = 0;
}
SDL_DisplayMode mode;
if ((SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN) {
// Use the window display mode for full-screen exclusive mode
if (SDL_GetWindowDisplayMode(window, &mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_GetWindowDisplayMode() failed: %s",
SDL_GetError());
// Assume 60 Hz
return 60;
}
}
else {
// Use the current display mode for windowed and borderless
if (SDL_GetCurrentDisplayMode(displayIndex, &mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_GetCurrentDisplayMode() failed: %s",
SDL_GetError());
// Assume 60 Hz
return 60;
}
}
// May be zero if undefined
if (mode.refresh_rate == 0) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Refresh rate unknown; assuming 60 Hz");
mode.refresh_rate = 60;
}
return mode.refresh_rate;
}
bool StreamUtils::getRealDesktopMode(int displayIndex, SDL_DisplayMode* mode)
{
#ifdef Q_OS_DARWIN

3
app/streaming/streamutils.h
View File

@ -10,4 +10,7 @@ public:
static
bool getRealDesktopMode(int displayIndex, SDL_DisplayMode* mode);
static
int getDisplayRefreshRate(SDL_Window* window);
};

20
app/streaming/video/ffmpeg-renderers/dxva2.cpp
View File

@ -17,7 +17,6 @@ DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68,0x4951,0x4C54,0x88,0xFE,0xAB,0x
#define SAFE_COM_RELEASE(x) if (x) { (x)->Release(); }
DXVA2Renderer::DXVA2Renderer() :
m_ForceVsyncOn(false),
m_DecService(nullptr),
m_Decoder(nullptr),
m_SurfacesUsed(0),
@ -467,7 +466,6 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
D3DPRESENT_PARAMETERS d3dpp = {};
d3dpp.hDeviceWindow = info.info.win.window;
d3dpp.Flags = D3DPRESENTFLAG_VIDEO;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
if ((windowFlags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN) {
d3dpp.Windowed = false;
@ -490,14 +488,20 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
// to reduce latency by avoiding double v-syncing.
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
// If V-sync is enabled (not rendering faster than display),
// we can use FlipEx for more efficient swapping.
if (enableVsync) {
// D3DSWAPEFFECT_FLIPEX requires at least 2 back buffers to allow us to
// continue while DWM is waiting to render the surface to the display.
d3dpp.SwapEffect = D3DSWAPEFFECT_FLIPEX;
d3dpp.BackBufferCount = 2;
// We need our V-sync source enabled to synchronize with DWM composition
// and avoid micro-stuttering.
m_ForceVsyncOn = true;
}
else {
// With V-sync off, we won't use FlipEx because that will block while
// DWM is waiting to render our surface (effectively behaving like V-Sync).
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferCount = 1;
}
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Windowed mode with DWM running");
@ -506,6 +510,7 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
// Uncomposited desktop or full-screen exclusive mode with V-sync enabled
// We will enable V-sync in this scenario to avoid tearing.
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferCount = 1;
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
@ -515,6 +520,7 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
// Uncomposited desktop or full-screen exclusive mode with V-sync disabled
// We will allowing tearing for lowest latency.
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferCount = 1;
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
@ -631,7 +637,7 @@ int DXVA2Renderer::getDecoderCapabilities()
IFFmpegRenderer::VSyncConstraint DXVA2Renderer::getVsyncConstraint()
{
return m_ForceVsyncOn ? VSYNC_FORCE_ON : VSYNC_ANY;
return VSYNC_ANY;
}
void DXVA2Renderer::renderFrameAtVsync(AVFrame *frame)

1
app/streaming/video/ffmpeg-renderers/dxva2.h
View File

@ -45,7 +45,6 @@ private:
int m_VideoFormat;
int m_VideoWidth;
int m_VideoHeight;
bool m_ForceVsyncOn;
int m_DisplayWidth;
int m_DisplayHeight;

40
app/streaming/video/ffmpeg-renderers/pacer/pacer.cpp
View File

@ -1,4 +1,5 @@
#include "pacer.h"
#include "streaming/streamutils.h"
#include "nullthreadedvsyncsource.h"
@ -120,44 +121,7 @@ bool Pacer::initialize(SDL_Window* window, int maxVideoFps, bool enableVsync)
{
m_MaxVideoFps = maxVideoFps;
m_EnableVsync = enableVsync;
int displayIndex = SDL_GetWindowDisplayIndex(window);
if (displayIndex < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Failed to get current display: %s",
SDL_GetError());
// Assume display 0 if it fails
displayIndex = 0;
}
SDL_DisplayMode mode;
if ((SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN) {
// Use the window display mode for full-screen exclusive mode
if (SDL_GetWindowDisplayMode(window, &mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_GetWindowDisplayMode() failed: %s",
SDL_GetError());
return false;
}
}
else {
// Use the current display mode for windowed and borderless
if (SDL_GetCurrentDisplayMode(displayIndex, &mode) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_GetCurrentDisplayMode() failed: %s",
SDL_GetError());
return false;
}
}
// May be zero if undefined
m_DisplayFps = mode.refresh_rate;
if (m_DisplayFps == 0) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Refresh rate unknown; assuming 60 Hz");
m_DisplayFps = 60;
}
m_DisplayFps = StreamUtils::getDisplayRefreshRate(window);
if (m_EnableVsync) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,