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#include "../../include/capture/xcomposite_cuda.h"
#include "../../include/cuda.h"
#include <stdio.h>
#include <stdlib.h>
#include <libavutil/frame.h>
#include <libavcodec/avcodec.h>
typedef struct {
gsr_capture_xcomposite xcomposite;
bool overclock;
gsr_cuda cuda;
CUgraphicsResource cuda_graphics_resources[2];
CUarray mapped_arrays[2];
CUstream cuda_stream;
} gsr_capture_xcomposite_cuda;
static void gsr_capture_xcomposite_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context);
static int gsr_capture_xcomposite_cuda_start(gsr_capture *cap, AVCodecContext *video_codec_context, AVFrame *frame) {
gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
const int res = gsr_capture_xcomposite_start(&cap_xcomp->xcomposite, video_codec_context, frame);
if(res != 0) {
gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
return res;
}
if(!gsr_cuda_load(&cap_xcomp->cuda, cap_xcomp->xcomposite.params.egl->x11.dpy, cap_xcomp->overclock)) {
fprintf(stderr, "gsr error: gsr_capture_kms_cuda_start: failed to load cuda\n");
gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
return -1;
}
if(!cuda_create_codec_context(cap_xcomp->cuda.cu_ctx, video_codec_context, video_codec_context->width, video_codec_context->height, &cap_xcomp->cuda_stream)) {
gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
return -1;
}
gsr_cuda_context cuda_context = {
.cuda = &cap_xcomp->cuda,
.cuda_graphics_resources = cap_xcomp->cuda_graphics_resources,
.mapped_arrays = cap_xcomp->mapped_arrays
};
if(!gsr_capture_base_setup_cuda_textures(&cap_xcomp->xcomposite.base, frame, &cuda_context, cap_xcomp->xcomposite.params.color_range, GSR_SOURCE_COLOR_RGB, false)) {
gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
return -1;
}
return 0;
}
static void gsr_capture_xcomposite_unload_cuda_graphics(gsr_capture_xcomposite_cuda *cap_xcomp) {
if(cap_xcomp->cuda.cu_ctx) {
CUcontext old_ctx;
cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
for(int i = 0; i < 2; ++i) {
if(cap_xcomp->cuda_graphics_resources[i]) {
cap_xcomp->cuda.cuGraphicsUnmapResources(1, &cap_xcomp->cuda_graphics_resources[i], 0);
cap_xcomp->cuda.cuGraphicsUnregisterResource(cap_xcomp->cuda_graphics_resources[i]);
cap_xcomp->cuda_graphics_resources[i] = 0;
}
}
cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
}
}
static void gsr_capture_xcomposite_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context) {
(void)video_codec_context;
gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
gsr_capture_xcomposite_stop(&cap_xcomp->xcomposite);
gsr_capture_xcomposite_unload_cuda_graphics(cap_xcomp);
gsr_cuda_unload(&cap_xcomp->cuda);
}
static void gsr_capture_xcomposite_cuda_tick(gsr_capture *cap, AVCodecContext *video_codec_context) {
gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
gsr_capture_xcomposite_tick(&cap_xcomp->xcomposite, video_codec_context);
}
static bool gsr_capture_xcomposite_cuda_should_stop(gsr_capture *cap, bool *err) {
gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
return gsr_capture_xcomposite_should_stop(&cap_xcomp->xcomposite, err);
}
static int gsr_capture_xcomposite_cuda_capture(gsr_capture *cap, AVFrame *frame) {
gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
gsr_capture_xcomposite_capture(&cap_xcomp->xcomposite, frame);
const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
for(int i = 0; i < 2; ++i) {
CUDA_MEMCPY2D memcpy_struct;
memcpy_struct.srcXInBytes = 0;
memcpy_struct.srcY = 0;
memcpy_struct.srcMemoryType = CU_MEMORYTYPE_ARRAY;
memcpy_struct.dstXInBytes = 0;
memcpy_struct.dstY = 0;
memcpy_struct.dstMemoryType = CU_MEMORYTYPE_DEVICE;
memcpy_struct.srcArray = cap_xcomp->mapped_arrays[i];
memcpy_struct.srcPitch = frame->width / div[i];
memcpy_struct.dstDevice = (CUdeviceptr)frame->data[i];
memcpy_struct.dstPitch = frame->linesize[i];
memcpy_struct.WidthInBytes = frame->width;
memcpy_struct.Height = frame->height / div[i];
// TODO: Remove this copy if possible
cap_xcomp->cuda.cuMemcpy2DAsync_v2(&memcpy_struct, cap_xcomp->cuda_stream);
}
// TODO: needed?
cap_xcomp->cuda.cuStreamSynchronize(cap_xcomp->cuda_stream);
return 0;
}
static void gsr_capture_xcomposite_cuda_destroy(gsr_capture *cap, AVCodecContext *video_codec_context) {
if(cap->priv) {
gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
free(cap->priv);
cap->priv = NULL;
}
free(cap);
}
gsr_capture* gsr_capture_xcomposite_cuda_create(const gsr_capture_xcomposite_cuda_params *params) {
if(!params) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_create params is NULL\n");
return NULL;
}
gsr_capture *cap = calloc(1, sizeof(gsr_capture));
if(!cap)
return NULL;
gsr_capture_xcomposite_cuda *cap_xcomp = calloc(1, sizeof(gsr_capture_xcomposite_cuda));
if(!cap_xcomp) {
free(cap);
return NULL;
}
gsr_capture_xcomposite_init(&cap_xcomp->xcomposite, ¶ms->base);
cap_xcomp->overclock = params->overclock;
*cap = (gsr_capture) {
.start = gsr_capture_xcomposite_cuda_start,
.tick = gsr_capture_xcomposite_cuda_tick,
.should_stop = gsr_capture_xcomposite_cuda_should_stop,
.capture = gsr_capture_xcomposite_cuda_capture,
.capture_end = NULL,
.destroy = gsr_capture_xcomposite_cuda_destroy,
.priv = cap_xcomp
};
return cap;
}
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