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Initialize a DRM hardware context for hwaccel usage

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This commit is contained in:
Cameron Gutman 2021-01-30 16:33:58 -06:00
parent 3af24eafbb
commit 243ba371b3
2 changed files with 29 additions and 3 deletions
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31
app/streaming/video/ffmpeg-renderers/drm.cpp
View File

@ -15,7 +15,8 @@ extern "C" {
#include <Limelight.h>
DrmRenderer::DrmRenderer()
: m_DrmFd(-1),
: m_HwContext(nullptr),
m_DrmFd(-1),
m_CrtcId(0),
m_PlaneId(0),
m_CurrentFbId(0)
@ -31,11 +32,15 @@ DrmRenderer::~DrmRenderer()
if (m_DrmFd != -1) {
close(m_DrmFd);
}
if (m_HwContext != nullptr) {
av_buffer_unref(&m_HwContext);
}
}
bool DrmRenderer::prepareDecoderContext(AVCodecContext*, AVDictionary**)
bool DrmRenderer::prepareDecoderContext(AVCodecContext* context, AVDictionary**)
{
/* Nothing to do */
context->hw_device_ctx = av_buffer_ref(m_HwContext);
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Using DRM renderer");
@ -185,6 +190,26 @@ bool DrmRenderer::initialize(PDECODER_PARAMETERS)
drmModeFreePlaneResources(planeRes);
m_HwContext = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DRM);
if (m_HwContext == nullptr) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"av_hwdevice_ctx_alloc(DRM) failed");
return false;
}
AVHWDeviceContext* deviceContext = (AVHWDeviceContext*)m_HwContext->data;
AVDRMDeviceContext* drmDeviceContext = (AVDRMDeviceContext*)deviceContext->hwctx;
drmDeviceContext->fd = m_DrmFd;
int err = av_hwdevice_ctx_init(m_HwContext);
if (err < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"av_hwdevice_ctx_init(DRM) failed: %d",
err);
return false;
}
return true;
}

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

@ -16,6 +16,7 @@ public:
virtual int getRendererAttributes() override;
private:
AVBufferRef* m_HwContext;
int m_DrmFd;
uint32_t m_CrtcId;
uint32_t m_PlaneId;