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gpu-screen-recorder/src/capture/capture.c

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#include "../../include/capture/capture.h"
#include "../../include/egl.h"
#include "../../include/cuda.h"
#include "../../include/utils.h"
#include <stdio.h>
#include <stdint.h>
#include <va/va.h>
#include <va/va_drmcommon.h>
#include <libavutil/frame.h>
#include <libavutil/hwcontext_vaapi.h>
#include <libavutil/hwcontext_cuda.h>
#include <libavcodec/avcodec.h>
int gsr_capture_start(gsr_capture *cap, AVCodecContext *video_codec_context, AVFrame *frame) {
if(cap->started)
return -1;
int res = cap->start(cap, video_codec_context, frame);
if(res == 0)
cap->started = true;
return res;
}
void gsr_capture_tick(gsr_capture *cap, AVCodecContext *video_codec_context) {
if(!cap->started) {
fprintf(stderr, "gsr error: gsp_capture_tick failed: the gsr capture has not been started\n");
return;
}
if(cap->tick)
cap->tick(cap, video_codec_context);
}
bool gsr_capture_should_stop(gsr_capture *cap, bool *err) {
if(!cap->started) {
fprintf(stderr, "gsr error: gsr_capture_should_stop failed: the gsr capture has not been started\n");
return false;
}
if(!cap->should_stop)
return false;
return cap->should_stop(cap, err);
}
int gsr_capture_capture(gsr_capture *cap, AVFrame *frame) {
if(!cap->started) {
fprintf(stderr, "gsr error: gsr_capture_capture failed: the gsr capture has not been started\n");
return -1;
}
return cap->capture(cap, frame);
}
void gsr_capture_end(gsr_capture *cap, AVFrame *frame) {
if(!cap->started) {
fprintf(stderr, "gsr error: gsr_capture_end failed: the gsr capture has not been started\n");
return;
}
if(!cap->capture_end)
return;
cap->capture_end(cap, frame);
}
void gsr_capture_destroy(gsr_capture *cap, AVCodecContext *video_codec_context) {
cap->destroy(cap, video_codec_context);
}
static uint32_t fourcc(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {
return (d << 24) | (c << 16) | (b << 8) | a;
}
bool gsr_capture_base_setup_vaapi_textures(gsr_capture_base *self, AVFrame *frame, VADisplay va_dpy, VADRMPRIMESurfaceDescriptor *prime, gsr_color_range color_range) {
const int res = av_hwframe_get_buffer(self->video_codec_context->hw_frames_ctx, frame, 0);
if(res < 0) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: av_hwframe_get_buffer failed: %d\n", res);
return false;
}
VASurfaceID target_surface_id = (uintptr_t)frame->data[3];
VAStatus va_status = vaExportSurfaceHandle(va_dpy, target_surface_id, VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2, VA_EXPORT_SURFACE_WRITE_ONLY | VA_EXPORT_SURFACE_SEPARATE_LAYERS, prime);
if(va_status != VA_STATUS_SUCCESS) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: vaExportSurfaceHandle failed, error: %d\n", va_status);
return false;
}
vaSyncSurface(va_dpy, target_surface_id);
self->egl->glGenTextures(1, &self->input_texture);
self->egl->glBindTexture(GL_TEXTURE_2D, self->input_texture);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
self->egl->glGenTextures(1, &self->cursor_texture);
self->egl->glBindTexture(GL_TEXTURE_2D, self->cursor_texture);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
const uint32_t formats_nv12[2] = { fourcc('R', '8', ' ', ' '), fourcc('G', 'R', '8', '8') };
const uint32_t formats_p010[2] = { fourcc('R', '1', '6', ' '), fourcc('G', 'R', '3', '2') };
if(prime->fourcc == VA_FOURCC_NV12 || prime->fourcc == VA_FOURCC_P010) {
const uint32_t *formats = prime->fourcc == VA_FOURCC_NV12 ? formats_nv12 : formats_p010;
const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
self->egl->glGenTextures(2, self->target_textures);
for(int i = 0; i < 2; ++i) {
const int layer = i;
const int plane = 0;
const uint64_t modifier = prime->objects[prime->layers[layer].object_index[plane]].drm_format_modifier;
const intptr_t img_attr[] = {
EGL_LINUX_DRM_FOURCC_EXT, formats[i],
EGL_WIDTH, prime->width / div[i],
EGL_HEIGHT, prime->height / div[i],
EGL_DMA_BUF_PLANE0_FD_EXT, prime->objects[prime->layers[layer].object_index[plane]].fd,
EGL_DMA_BUF_PLANE0_OFFSET_EXT, prime->layers[layer].offset[plane],
EGL_DMA_BUF_PLANE0_PITCH_EXT, prime->layers[layer].pitch[plane],
EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT, modifier & 0xFFFFFFFFULL,
EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, modifier >> 32ULL,
EGL_NONE
};
while(self->egl->eglGetError() != EGL_SUCCESS){}
EGLImage image = self->egl->eglCreateImage(self->egl->egl_display, 0, EGL_LINUX_DMA_BUF_EXT, NULL, img_attr);
if(!image) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: failed to create egl image from drm fd for output drm fd, error: %d\n", self->egl->eglGetError());
return false;
}
self->egl->glBindTexture(GL_TEXTURE_2D, self->target_textures[i]);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
while(self->egl->glGetError()) {}
while(self->egl->eglGetError() != EGL_SUCCESS){}
self->egl->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
if(self->egl->glGetError() != 0 || self->egl->eglGetError() != EGL_SUCCESS) {
// TODO: Get the error properly
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: failed to bind egl image to gl texture, error: %d\n", self->egl->eglGetError());
self->egl->eglDestroyImage(self->egl->egl_display, image);
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
return false;
}
self->egl->eglDestroyImage(self->egl->egl_display, image);
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
}
gsr_color_conversion_params color_conversion_params = {0};
color_conversion_params.color_range = color_range;
color_conversion_params.egl = self->egl;
color_conversion_params.source_color = GSR_SOURCE_COLOR_RGB;
if(prime->fourcc == VA_FOURCC_NV12)
color_conversion_params.destination_color = GSR_DESTINATION_COLOR_NV12;
else
color_conversion_params.destination_color = GSR_DESTINATION_COLOR_P010;
color_conversion_params.destination_textures[0] = self->target_textures[0];
color_conversion_params.destination_textures[1] = self->target_textures[1];
color_conversion_params.num_destination_textures = 2;
if(gsr_color_conversion_init(&self->color_conversion, &color_conversion_params) != 0) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: failed to create color conversion\n");
return false;
}
gsr_color_conversion_clear(&self->color_conversion);
return true;
} else {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_vaapi_textures: unexpected fourcc %u for output drm fd, expected nv12 or p010\n", prime->fourcc);
return false;
}
}
static unsigned int gl_create_texture(gsr_egl *egl, int width, int height, int internal_format, unsigned int format) {
unsigned int texture_id = 0;
egl->glGenTextures(1, &texture_id);
egl->glBindTexture(GL_TEXTURE_2D, texture_id);
egl->glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL);
egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
egl->glBindTexture(GL_TEXTURE_2D, 0);
return texture_id;
}
static bool cuda_register_opengl_texture(gsr_cuda *cuda, CUgraphicsResource *cuda_graphics_resource, CUarray *mapped_array, unsigned int texture_id) {
CUresult res;
res = cuda->cuGraphicsGLRegisterImage(cuda_graphics_resource, texture_id, GL_TEXTURE_2D, CU_GRAPHICS_REGISTER_FLAGS_NONE);
if (res != CUDA_SUCCESS) {
const char *err_str = "unknown";
cuda->cuGetErrorString(res, &err_str);
fprintf(stderr, "gsr error: cuda_register_opengl_texture: cuGraphicsGLRegisterImage failed, error: %s, texture " "id: %u\n", err_str, texture_id);
return false;
}
res = cuda->cuGraphicsResourceSetMapFlags(*cuda_graphics_resource, CU_GRAPHICS_MAP_RESOURCE_FLAGS_NONE);
res = cuda->cuGraphicsMapResources(1, cuda_graphics_resource, 0);
res = cuda->cuGraphicsSubResourceGetMappedArray(mapped_array, *cuda_graphics_resource, 0, 0);
return true;
}
bool gsr_capture_base_setup_cuda_textures(gsr_capture_base *self, AVFrame *frame, gsr_cuda_context *cuda_context, gsr_color_range color_range, gsr_source_color source_color, bool hdr) {
// TODO:
const int res = av_hwframe_get_buffer(self->video_codec_context->hw_frames_ctx, frame, 0);
if(res < 0) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_cuda_textures: av_hwframe_get_buffer failed: %d\n", res);
return false;
}
self->egl->glGenTextures(1, &self->input_texture);
self->egl->glBindTexture(GL_TEXTURE_2D, self->input_texture);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
self->egl->glGenTextures(1, &self->cursor_texture);
self->egl->glBindTexture(GL_TEXTURE_EXTERNAL_OES, self->cursor_texture);
self->egl->glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
self->egl->glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
self->egl->glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
self->egl->glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0);
const unsigned int internal_formats_nv12[2] = { GL_R8, GL_RG8 };
const unsigned int internal_formats_p010[2] = { GL_R16, GL_RG16 };
const unsigned int formats[2] = { GL_RED, GL_RG };
const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
for(int i = 0; i < 2; ++i) {
self->target_textures[i] = gl_create_texture(self->egl, self->video_codec_context->width / div[i], self->video_codec_context->height / div[i], !hdr ? internal_formats_nv12[i] : internal_formats_p010[i], formats[i]);
if(self->target_textures[i] == 0) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_cuda_textures: failed to create opengl texture\n");
return false;
}
if(!cuda_register_opengl_texture(cuda_context->cuda, &cuda_context->cuda_graphics_resources[i], &cuda_context->mapped_arrays[i], self->target_textures[i])) {
return false;
}
}
gsr_color_conversion_params color_conversion_params = {0};
color_conversion_params.color_range = color_range;
color_conversion_params.egl = self->egl;
color_conversion_params.source_color = source_color;
if(!hdr)
color_conversion_params.destination_color = GSR_DESTINATION_COLOR_NV12;
else
color_conversion_params.destination_color = GSR_DESTINATION_COLOR_P010;
color_conversion_params.destination_textures[0] = self->target_textures[0];
color_conversion_params.destination_textures[1] = self->target_textures[1];
color_conversion_params.num_destination_textures = 2;
color_conversion_params.load_external_image_shader = true;
if(gsr_color_conversion_init(&self->color_conversion, &color_conversion_params) != 0) {
fprintf(stderr, "gsr error: gsr_capture_kms_setup_cuda_textures: failed to create color conversion\n");
return false;
}
gsr_color_conversion_clear(&self->color_conversion);
return true;
}
void gsr_capture_base_stop(gsr_capture_base *self) {
gsr_color_conversion_deinit(&self->color_conversion);
if(self->egl->egl_context) {
if(self->input_texture) {
self->egl->glDeleteTextures(1, &self->input_texture);
self->input_texture = 0;
}
if(self->cursor_texture) {
self->egl->glDeleteTextures(1, &self->cursor_texture);
self->cursor_texture = 0;
}
self->egl->glDeleteTextures(2, self->target_textures);
self->target_textures[0] = 0;
self->target_textures[1] = 0;
}
if(self->video_codec_context->hw_device_ctx)
av_buffer_unref(&self->video_codec_context->hw_device_ctx);
if(self->video_codec_context->hw_frames_ctx)
av_buffer_unref(&self->video_codec_context->hw_frames_ctx);
}
bool drm_create_codec_context(const char *card_path, AVCodecContext *video_codec_context, int width, int height, bool hdr, VADisplay *va_dpy) {
char render_path[128];
if(!gsr_card_path_get_render_path(card_path, render_path)) {
fprintf(stderr, "gsr error: failed to get /dev/dri/renderDXXX file from %s\n", card_path);
return false;
}
AVBufferRef *device_ctx;
if(av_hwdevice_ctx_create(&device_ctx, AV_HWDEVICE_TYPE_VAAPI, render_path, NULL, 0) < 0) {
fprintf(stderr, "Error: Failed to create hardware device context\n");
return false;
}
AVBufferRef *frame_context = av_hwframe_ctx_alloc(device_ctx);
if(!frame_context) {
fprintf(stderr, "Error: Failed to create hwframe context\n");
av_buffer_unref(&device_ctx);
return false;
}
AVHWFramesContext *hw_frame_context =
(AVHWFramesContext *)frame_context->data;
hw_frame_context->width = width;
hw_frame_context->height = height;
hw_frame_context->sw_format = hdr ? AV_PIX_FMT_P010LE : AV_PIX_FMT_NV12;
hw_frame_context->format = video_codec_context->pix_fmt;
hw_frame_context->device_ref = device_ctx;
hw_frame_context->device_ctx = (AVHWDeviceContext*)device_ctx->data;
//hw_frame_context->initial_pool_size = 20;
AVVAAPIDeviceContext *vactx =((AVHWDeviceContext*)device_ctx->data)->hwctx;
*va_dpy = vactx->display;
if (av_hwframe_ctx_init(frame_context) < 0) {
fprintf(stderr, "Error: Failed to initialize hardware frame context "
"(note: ffmpeg version needs to be > 4.0)\n");
av_buffer_unref(&device_ctx);
//av_buffer_unref(&frame_context);
return false;
}
video_codec_context->hw_device_ctx = av_buffer_ref(device_ctx);
video_codec_context->hw_frames_ctx = av_buffer_ref(frame_context);
return true;
}
bool cuda_create_codec_context(CUcontext cu_ctx, AVCodecContext *video_codec_context, int width, int height, bool hdr, CUstream *cuda_stream) {
AVBufferRef *device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
if(!device_ctx) {
fprintf(stderr, "gsr error: cuda_create_codec_context failed: failed to create hardware device context\n");
return false;
}
AVHWDeviceContext *hw_device_context = (AVHWDeviceContext*)device_ctx->data;
AVCUDADeviceContext *cuda_device_context = (AVCUDADeviceContext*)hw_device_context->hwctx;
cuda_device_context->cuda_ctx = cu_ctx;
if(av_hwdevice_ctx_init(device_ctx) < 0) {
fprintf(stderr, "gsr error: cuda_create_codec_context failed: failed to create hardware device context\n");
av_buffer_unref(&device_ctx);
return false;
}
AVBufferRef *frame_context = av_hwframe_ctx_alloc(device_ctx);
if(!frame_context) {
fprintf(stderr, "gsr error: cuda_create_codec_context failed: failed to create hwframe context\n");
av_buffer_unref(&device_ctx);
return false;
}
AVHWFramesContext *hw_frame_context = (AVHWFramesContext*)frame_context->data;
hw_frame_context->width = width;
hw_frame_context->height = height;
hw_frame_context->sw_format = hdr ? AV_PIX_FMT_P010LE : AV_PIX_FMT_NV12;
hw_frame_context->format = video_codec_context->pix_fmt;
hw_frame_context->device_ref = device_ctx;
hw_frame_context->device_ctx = (AVHWDeviceContext*)device_ctx->data;
if (av_hwframe_ctx_init(frame_context) < 0) {
fprintf(stderr, "gsr error: cuda_create_codec_context failed: failed to initialize hardware frame context "
"(note: ffmpeg version needs to be > 4.0)\n");
av_buffer_unref(&device_ctx);
//av_buffer_unref(&frame_context);
return false;
}
*cuda_stream = cuda_device_context->stream;
video_codec_context->hw_device_ctx = av_buffer_ref(device_ctx);
video_codec_context->hw_frames_ctx = av_buffer_ref(frame_context);
return true;
}
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