Add vulkan video encoding option (-k h264_vulkan). WIP, not fully hardware accelerated yet

TODO

@@ -164,3 +164,5 @@ Test vaapi low latency mode (setenv("AMD_DEBUG", "lowlatencyenc", true);), added
 Use nvidia low latency options for better encoding times.
 
 Test ideal async_depth value. Increasing async_depth also increased gpu memory usage a lot (from 100mb to 500mb when moving from async_depth 2 to 16) at 4k resolution. Setting it to 8 increases it by 200mb which might be ok.
+
+Replace -encoder cpu with -k h264_software?

include/codec_query/vulkan.h

@@ -0,0 +1,8 @@
+#ifndef GSR_CODEC_QUERY_VULKAN_H
+#define GSR_CODEC_QUERY_VULKAN_H
+
+#include "codec_query.h"
+
+bool gsr_get_supported_video_codecs_vulkan(gsr_supported_video_codecs *video_codecs, const char *card_path, bool cleanup);
+
+#endif /* GSR_CODEC_QUERY_VULKAN_H */

include/egl.h

@@ -313,6 +313,9 @@ struct gsr_egl {
     void (*glUniform2f)(int location, float v0, float v1);
     void (*glDebugMessageCallback)(GLDEBUGPROC callback, const void *userParam);
     void (*glScissor)(int x, int y, int width, int height);
+    void (*glReadPixels)(int x, int y, int width, int height, unsigned int format, unsigned int type, void *pixels);
+    void* (*glMapBuffer)(unsigned int target, unsigned int access);
+    unsigned char (*glUnmapBuffer)(unsigned int target);
 };
 
 bool gsr_egl_load(gsr_egl *self, Display *dpy, bool wayland, bool is_monitor_capture);

include/encoder/video/video.h

@@ -10,7 +10,7 @@ typedef struct AVFrame AVFrame;
 
 struct gsr_video_encoder {
     bool (*start)(gsr_video_encoder *encoder, AVCodecContext *video_codec_context, AVFrame *frame);
-    void (*copy_textures_to_frame)(gsr_video_encoder *encoder, AVFrame *frame); /* Can be NULL */
+    void (*copy_textures_to_frame)(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion); /* Can be NULL */
     /* |textures| should be able to fit 2 elements */
     void (*get_textures)(gsr_video_encoder *encoder, unsigned int *textures, int *num_textures, gsr_destination_color *destination_color);
     void (*destroy)(gsr_video_encoder *encoder, AVCodecContext *video_codec_context);
@@ -20,7 +20,7 @@ struct gsr_video_encoder {
 };
 
 bool gsr_video_encoder_start(gsr_video_encoder *encoder, AVCodecContext *video_codec_context, AVFrame *frame);
-void gsr_video_encoder_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame);
+void gsr_video_encoder_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion);
 void gsr_video_encoder_get_textures(gsr_video_encoder *encoder, unsigned int *textures, int *num_textures, gsr_destination_color *destination_color);
 void gsr_video_encoder_destroy(gsr_video_encoder *encoder, AVCodecContext *video_codec_context);
 

meson.build

@@ -20,6 +20,7 @@ src = [
     'src/encoder/video/software.c',
     'src/codec_query/cuda.c',
     'src/codec_query/vaapi.c',
+    'src/codec_query/vulkan.c',
     'src/egl.c',
     'src/cuda.c',
     'src/xnvctrl.c',

project.conf

@@ -32,3 +32,4 @@ wayland-client = ">=1"
 dbus-1 = ">=1"
 libpipewire-0.3 = ">=1"
 libspa-0.2 = ">=0"
+#vulkan = ">=1"

src/codec_query/vulkan.c

@@ -0,0 +1,153 @@
+#include "../../include/codec_query/vulkan.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <xf86drm.h>
+#include <vulkan/vulkan.h>
+
+#define MAX_PHYSICAL_DEVICES 32
+
+static const char *required_device_extensions[] = {
+    "VK_KHR_external_memory_fd",
+    "VK_KHR_external_semaphore_fd",
+    "VK_KHR_video_encode_queue",
+    "VK_KHR_video_queue",
+    "VK_KHR_video_maintenance1",
+    "VK_EXT_external_memory_dma_buf",
+    "VK_EXT_external_memory_host",
+    "VK_EXT_image_drm_format_modifier"
+};
+static int num_required_device_extensions = 8;
+
+bool gsr_get_supported_video_codecs_vulkan(gsr_supported_video_codecs *video_codecs, const char *card_path, bool cleanup) {
+    memset(video_codecs, 0, sizeof(*video_codecs));
+#if 0
+    bool success = false;
+    VkInstance instance = NULL;
+    VkPhysicalDevice physical_devices[MAX_PHYSICAL_DEVICES];
+    VkDevice device = NULL;
+    VkExtensionProperties *device_extensions = NULL;
+
+    const VkApplicationInfo app_info = {
+        .sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
+        .pApplicationName = "GPU Screen Recorder",
+        .applicationVersion = VK_MAKE_VERSION(1, 0, 0),
+        .pEngineName = "GPU Screen Recorder",
+        .engineVersion = VK_MAKE_VERSION(1, 0, 0),
+        .apiVersion = VK_API_VERSION_1_3,
+    };
+
+    const VkInstanceCreateInfo instance_create_info = {
+        .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
+        .pApplicationInfo = &app_info
+    };
+
+    if(vkCreateInstance(&instance_create_info, NULL, &instance) != VK_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkCreateInstance failed\n");
+        goto done;
+    }
+
+    uint32_t num_devices = 0;
+    if(vkEnumeratePhysicalDevices(instance, &num_devices, NULL) != VK_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumeratePhysicalDevices (query num devices) failed\n");
+        goto done;
+    }
+
+    if(num_devices == 0) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: no vulkan capable device found\n");
+        goto done;
+    }
+
+    if(num_devices > MAX_PHYSICAL_DEVICES)
+        num_devices = MAX_PHYSICAL_DEVICES;
+    
+    if(vkEnumeratePhysicalDevices(instance, &num_devices, physical_devices) != VK_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumeratePhysicalDevices (get data) failed\n");
+        goto done;
+    }
+
+    VkPhysicalDevice physical_device = NULL;
+    char device_card_path[128];
+    for(uint32_t i = 0; i < num_devices; ++i) {
+        VkPhysicalDeviceDrmPropertiesEXT device_drm_properties = {
+            .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRM_PROPERTIES_EXT
+        };
+
+        VkPhysicalDeviceProperties2 device_properties = {
+            .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2,
+            .pNext = &device_drm_properties
+        };
+        vkGetPhysicalDeviceProperties2(physical_devices[i], &device_properties);
+
+        if(!device_drm_properties.hasPrimary)
+            continue;
+
+        snprintf(device_card_path, sizeof(device_card_path), DRM_DEV_NAME, DRM_DIR_NAME, (int)device_drm_properties.primaryMinor);
+        if(strcmp(device_card_path, card_path) == 0) {
+            physical_device = physical_devices[i];
+            break;
+        }
+    }
+
+    if(!physical_device) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: failed to find a vulkan device that matches opengl device %s\n", card_path);
+        goto done;
+    }
+
+    const VkDeviceCreateInfo device_create_info = {
+        .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
+        .enabledExtensionCount = num_required_device_extensions,
+        .ppEnabledExtensionNames = required_device_extensions
+    };
+
+    if(vkCreateDevice(physical_device, &device_create_info, NULL, &device) != VK_SUCCESS) {
+        //fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkCreateDevice failed. Device %s likely doesn't support vulkan video encoding\n", card_path);
+        goto done;
+    }
+
+    uint32_t num_device_extensions = 0;
+    if(vkEnumerateDeviceExtensionProperties(physical_device, NULL, &num_device_extensions, NULL) != VK_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumerateDeviceExtensionProperties (query num device extensions) failed\n");
+        goto done;
+    }
+
+    device_extensions = calloc(num_device_extensions, sizeof(VkExtensionProperties));
+    if(!device_extensions) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: failed to allocate %d device extensions\n", num_device_extensions);
+        goto done;
+    }
+
+    if(vkEnumerateDeviceExtensionProperties(physical_device, NULL, &num_device_extensions, device_extensions) != VK_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumerateDeviceExtensionProperties (get data) failed\n");
+        goto done;
+    }
+
+    for(uint32_t i = 0; i < num_device_extensions; ++i) {
+        if(strcmp(device_extensions[i].extensionName, "VK_KHR_video_encode_h264") == 0) {
+            video_codecs->h264 = true;
+        } else if(strcmp(device_extensions[i].extensionName, "VK_KHR_video_encode_h265") == 0) {
+            // TODO: Verify if 10bit and hdr are actually supported
+            video_codecs->hevc = true;
+            video_codecs->hevc_10bit = true;
+            video_codecs->hevc_hdr = true;
+        }
+    }
+
+    success = true;
+
+    done:
+    if(cleanup) {
+        if(device)
+            vkDestroyDevice(device, NULL);
+        if(instance)
+            vkDestroyInstance(instance, NULL);
+    }
+    if(device_extensions)
+        free(device_extensions);
+    return success;
+#else
+    video_codecs->h264 = true;
+    return true;
+#endif
+}

src/egl.c

@@ -499,6 +499,9 @@ static bool gsr_egl_load_gl(gsr_egl *self, void *library) {
         { (void**)&self->glUniform2f, "glUniform2f" },
         { (void**)&self->glDebugMessageCallback, "glDebugMessageCallback" },
         { (void**)&self->glScissor, "glScissor" },
+        { (void**)&self->glReadPixels, "glReadPixels" },
+        { (void**)&self->glMapBuffer, "glMapBuffer" },
+        { (void**)&self->glUnmapBuffer, "glUnmapBuffer" },
 
         { NULL, NULL }
     };

src/encoder/video/cuda.c

@@ -171,7 +171,7 @@ void gsr_video_encoder_cuda_stop(gsr_video_encoder_cuda *self, AVCodecContext *v
     gsr_cuda_unload(&self->cuda);
 }
 
-static void gsr_video_encoder_cuda_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame) {
+static void gsr_video_encoder_cuda_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion) {
     gsr_video_encoder_cuda *self = encoder->priv;
     const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
     for(int i = 0; i < 2; ++i) {

src/encoder/video/software.c

@@ -84,7 +84,7 @@ void gsr_video_encoder_software_stop(gsr_video_encoder_software *self, AVCodecCo
     self->target_textures[1] = 0;
 }
 
-static void gsr_video_encoder_software_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame) {
+static void gsr_video_encoder_software_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion) {
     gsr_video_encoder_software *self = encoder->priv;
     // TODO: hdr support
     const unsigned int formats[2] = { GL_RED, GL_RG };

src/encoder/video/vaapi.c

@@ -235,7 +235,6 @@ gsr_video_encoder* gsr_video_encoder_vaapi_create(const gsr_video_encoder_vaapi_
 
     *encoder = (gsr_video_encoder) {
         .start = gsr_video_encoder_vaapi_start,
-        .copy_textures_to_frame = NULL,
         .get_textures = gsr_video_encoder_vaapi_get_textures,
         .destroy = gsr_video_encoder_vaapi_destroy,
         .priv = encoder_vaapi

src/encoder/video/video.c

@@ -9,10 +9,10 @@ bool gsr_video_encoder_start(gsr_video_encoder *encoder, AVCodecContext *video_c
     return res;
 }
 
-void gsr_video_encoder_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame) {
+void gsr_video_encoder_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion) {
     assert(encoder->started);
     if(encoder->copy_textures_to_frame)
-        encoder->copy_textures_to_frame(encoder, frame);
+        encoder->copy_textures_to_frame(encoder, frame, color_conversion);
 }
 
 void gsr_video_encoder_get_textures(gsr_video_encoder *encoder, unsigned int *textures, int *num_textures, gsr_destination_color *destination_color) {

src/encoder/video/vulkan.c

@@ -5,10 +5,28 @@
 #include <libavcodec/avcodec.h>
 #include <libavutil/hwcontext_vulkan.h>
 
+//#include <vulkan/vulkan_core.h>
+
+#define GL_TEXTURE_TILING_EXT             0x9580
+#define GL_OPTIMAL_TILING_EXT             0x9584
+#define GL_LINEAR_TILING_EXT              0x9585
+
+#define GL_PIXEL_PACK_BUFFER              0x88EB
+#define GL_PIXEL_UNPACK_BUFFER            0x88EC
+#define GL_STREAM_READ                    0x88E1
+#define GL_STREAM_DRAW                    0x88E0
+#define GL_READ_ONLY                      0x88B8
+#define GL_WRITE_ONLY                     0x88B9
+#define GL_READ_FRAMEBUFFER               0x8CA8
+
 typedef struct {
     gsr_video_encoder_vulkan_params params;
     unsigned int target_textures[2];
     AVBufferRef *device_ctx;
+    AVVulkanDeviceContext* vv;
+    unsigned int pbo_y[2];
+    unsigned int pbo_uv[2];
+    AVFrame *sw_frame;
 } gsr_video_encoder_vulkan;
 
 static bool gsr_video_encoder_vulkan_setup_context(gsr_video_encoder_vulkan *self, AVCodecContext *video_codec_context) {
@@ -32,6 +50,7 @@ static bool gsr_video_encoder_vulkan_setup_context(gsr_video_encoder_vulkan *sel
     hw_frame_context->format = video_codec_context->pix_fmt;
     hw_frame_context->device_ctx = (AVHWDeviceContext*)self->device_ctx->data;
 
+    //AVVulkanFramesContext *vk_frame_ctx = (AVVulkanFramesContext*)hw_frame_context->hwctx;
     //hw_frame_context->initial_pool_size = 20;
 
     if (av_hwframe_ctx_init(frame_context) < 0) {
@@ -47,12 +66,92 @@ static bool gsr_video_encoder_vulkan_setup_context(gsr_video_encoder_vulkan *sel
     return true;
 }
 
+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->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_TILING_EXT, GL_OPTIMAL_TILING_EXT);
+    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 AVVulkanDeviceContext* video_codec_context_get_vulkan_data(AVCodecContext *video_codec_context) {
+    AVBufferRef *hw_frames_ctx = video_codec_context->hw_frames_ctx;
+    if(!hw_frames_ctx)
+        return NULL;
+
+    AVHWFramesContext *hw_frame_context = (AVHWFramesContext*)hw_frames_ctx->data;
+    AVHWDeviceContext *device_context = (AVHWDeviceContext*)hw_frame_context->device_ctx;
+    if(device_context->type != AV_HWDEVICE_TYPE_VULKAN)
+        return NULL;
+
+    return (AVVulkanDeviceContext*)device_context->hwctx;
+}
+
 static bool gsr_video_encoder_vulkan_setup_textures(gsr_video_encoder_vulkan *self, AVCodecContext *video_codec_context, AVFrame *frame) {
     const int res = av_hwframe_get_buffer(video_codec_context->hw_frames_ctx, frame, 0);
     if(res < 0) {
         fprintf(stderr, "gsr error: gsr_video_encoder_vulkan_setup_textures: av_hwframe_get_buffer failed: %d\n", res);
         return false;
     }
+
+    //AVVkFrame *target_surface_id = (AVVkFrame*)frame->data[0];
+    self->vv = video_codec_context_get_vulkan_data(video_codec_context);
+
+    const unsigned int internal_formats_nv12[2] = { GL_RGBA8, GL_RGBA8 };
+    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->params.egl, video_codec_context->width / div[i], video_codec_context->height / div[i], self->params.color_depth == GSR_COLOR_DEPTH_8_BITS ? internal_formats_nv12[i] : internal_formats_p010[i], formats[i]);
+        if(self->target_textures[i] == 0) {
+            fprintf(stderr, "gsr error: gsr_video_encoder_cuda_setup_textures: failed to create opengl texture\n");
+            return false;
+        }
+    }
+
+    self->params.egl->glGenBuffers(2, self->pbo_y);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[0]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 3840 * 2160, 0, GL_STREAM_READ);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[1]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 3840 * 2160, 0, GL_STREAM_READ);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+
+    self->params.egl->glGenBuffers(2, self->pbo_uv);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_uv[0]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 1920 * 1080 * 2, 0, GL_STREAM_READ);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_uv[1]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 1920 * 1080 * 2, 0, GL_STREAM_READ);
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+
+    self->sw_frame = av_frame_alloc();
+    self->sw_frame->format = AV_PIX_FMT_NV12;
+    self->sw_frame->width = frame->width;
+    self->sw_frame->height = frame->height;
+
+    // TODO: Remove
+    if(av_frame_get_buffer(self->sw_frame, 0) < 0) {
+        fprintf(stderr, "failed to allocate sw frame\n");
+    }
+
+    // TODO: Remove
+    if(av_frame_make_writable(self->sw_frame) < 0) {
+        fprintf(stderr, "failed to make writable\n");
+    }
     return true;
 }
 
@@ -85,6 +184,91 @@ void gsr_video_encoder_vulkan_stop(gsr_video_encoder_vulkan *self, AVCodecContex
         av_buffer_unref(&self->device_ctx);
 }
 
+static void nop_free(void *opaque, uint8_t *data) {
+
+}
+
+static void gsr_video_encoder_vulkan_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame, gsr_color_conversion *color_conversion) {
+    gsr_video_encoder_vulkan *self = encoder->priv;
+
+    static int counter = 0;
+    ++counter;
+
+    // AVBufferRef *av_buffer_create(uint8_t *data, size_t size,
+    //                           void (*free)(void *opaque, uint8_t *data),
+    //                           void *opaque, int flags);
+
+    while(self->params.egl->glGetError()){}
+    self->params.egl->glBindFramebuffer(GL_READ_FRAMEBUFFER, color_conversion->framebuffers[0]);
+    //fprintf(stderr, "1 gl err: %d\n", self->params.egl->glGetError());
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[counter % 2]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 3840 * 2160, 0, GL_STREAM_READ);
+    self->params.egl->glReadPixels(0, 0, 3840, 2160, GL_RED, GL_UNSIGNED_BYTE, 0);
+    //fprintf(stderr, "2 gl err: %d\n", self->params.egl->glGetError());
+
+    const int next_pbo_y = (counter + 1) % 2;
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[next_pbo_y]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 3840 * 2160, 0, GL_STREAM_READ);
+    //fprintf(stderr, "3 gl err: %d\n", self->params.egl->glGetError());
+    uint8_t *ptr_y = (uint8_t*)self->params.egl->glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
+    //fprintf(stderr, "4 gl err: %d\n", self->params.egl->glGetError());
+    if(!ptr_y) {
+        fprintf(stderr, "failed to map buffer y!\n");
+    }
+
+    while(self->params.egl->glGetError()){}
+    self->params.egl->glBindFramebuffer(GL_READ_FRAMEBUFFER, color_conversion->framebuffers[1]);
+    //fprintf(stderr, "5 gl err: %d\n", self->params.egl->glGetError());
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_uv[counter % 2]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 1920 * 1080 * 2, 0, GL_STREAM_READ);
+    //fprintf(stderr, "5.5 gl err: %d\n", self->params.egl->glGetError());
+    self->params.egl->glReadPixels(0, 0, 1920, 1080, GL_RG, GL_UNSIGNED_BYTE, 0);
+    //fprintf(stderr, "6 gl err: %d\n", self->params.egl->glGetError());
+
+    const int next_pbo_uv = (counter + 1) % 2;
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_uv[next_pbo_uv]);
+    self->params.egl->glBufferData(GL_PIXEL_PACK_BUFFER, 1920 * 1080 * 2, 0, GL_STREAM_READ);
+    //fprintf(stderr, "7 gl err: %d\n", self->params.egl->glGetError());
+    uint8_t *ptr_uv = (uint8_t*)self->params.egl->glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
+    //fprintf(stderr, "8 gl err: %d\n", self->params.egl->glGetError());
+    if(!ptr_uv) {
+        fprintf(stderr, "failed to map buffer uv!\n");
+    }
+
+    //self->sw_frame->buf[0] = av_buffer_create(ptr_y, 3840 * 2160, nop_free, NULL, 0);
+    //self->sw_frame->buf[1] = av_buffer_create(ptr_uv, 1920 * 1080 * 2, nop_free, NULL, 0);
+    //self->sw_frame->data[0] = self->sw_frame->buf[0]->data;
+    //self->sw_frame->data[1] = self->sw_frame->buf[1]->data;
+    //self->sw_frame->extended_data[0] = self->sw_frame->data[0];
+    //self->sw_frame->extended_data[1] = self->sw_frame->data[1];
+
+    self->sw_frame->data[0] = ptr_y;
+    self->sw_frame->data[1] = ptr_uv;
+
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+    self->params.egl->glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+
+    //self->params.egl->glBindTexture(GL_TEXTURE_2D, self->target_textures[1]);
+    //self->params.egl->glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, sw_frame->data[1]);
+
+    //self->params.egl->glBindTexture(GL_TEXTURE_2D, 0);
+
+    int ret = av_hwframe_transfer_data(frame, self->sw_frame, 0);
+    if(ret < 0) {
+        fprintf(stderr, "transfer data failed, error: %s\n", av_err2str(ret));
+    }
+
+    //av_buffer_unref(&self->sw_frame->buf[0]);
+    //av_buffer_unref(&self->sw_frame->buf[1]);
+
+    //av_frame_free(&sw_frame);
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[next_pbo_y]);
+    self->params.egl->glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, self->pbo_y[next_pbo_uv]);
+    self->params.egl->glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
+    self->params.egl->glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+}
+
 static void gsr_video_encoder_vulkan_get_textures(gsr_video_encoder *encoder, unsigned int *textures, int *num_textures, gsr_destination_color *destination_color) {
     gsr_video_encoder_vulkan *self = encoder->priv;
     textures[0] = self->target_textures[0];
@@ -114,7 +298,7 @@ gsr_video_encoder* gsr_video_encoder_vulkan_create(const gsr_video_encoder_vulka
 
     *encoder = (gsr_video_encoder) {
         .start = gsr_video_encoder_vulkan_start,
-        .copy_textures_to_frame = NULL,
+        .copy_textures_to_frame = gsr_video_encoder_vulkan_copy_textures_to_frame,
         .get_textures = gsr_video_encoder_vulkan_get_textures,
         .destroy = gsr_video_encoder_vulkan_destroy,
         .priv = encoder_vulkan

src/main.cpp

@@ -8,9 +8,11 @@ extern "C" {
 #endif
 #include "../include/encoder/video/cuda.h"
 #include "../include/encoder/video/vaapi.h"
+#include "../include/encoder/video/vulkan.h"
 #include "../include/encoder/video/software.h"
 #include "../include/codec_query/cuda.h"
 #include "../include/codec_query/vaapi.h"
+#include "../include/codec_query/vulkan.h"
 #include "../include/egl.h"
 #include "../include/utils.h"
 #include "../include/damage.h"
@@ -102,7 +104,8 @@ enum class VideoCodec {
     AV1_HDR,
     AV1_10BIT,
     VP8,
-    VP9
+    VP9,
+    H264_VULKAN
 };
 
 enum class AudioCodec {
@@ -977,7 +980,7 @@ static void open_video_hardware(AVCodecContext *codec_context, VideoQuality vide
 static void usage_header() {
     const bool inside_flatpak = getenv("FLATPAK_ID") != NULL;
     const char *program_name = inside_flatpak ? "flatpak run --command=gpu-screen-recorder com.dec05eba.gpu_screen_recorder" : "gpu-screen-recorder";
-    fprintf(stderr, "usage: %s -w <window_id|monitor|focused|portal> [-c <container_format>] [-s WxH] -f <fps> [-a <audio_input>] [-q <quality>] [-r <replay_buffer_size_sec>] [-k h264|hevc|av1|vp8|vp9|hevc_hdr|av1_hdr|hevc_10bit|av1_10bit] [-ac aac|opus|flac] [-ab <bitrate>] [-oc yes|no] [-fm cfr|vfr|content] [-bm auto|qp|vbr] [-cr limited|full] [-df yes|no] [-sc <script_path>] [-cursor yes|no] [-keyint <value>] [-restore-portal-session yes|no] [-portal-session-token-filepath filepath] [-encoder gpu|cpu] [-o <output_file>] [-v yes|no] [--version] [-h|--help]\n", program_name);
+    fprintf(stderr, "usage: %s -w <window_id|monitor|focused|portal> [-c <container_format>] [-s WxH] -f <fps> [-a <audio_input>] [-q <quality>] [-r <replay_buffer_size_sec>] [-k h264|hevc|av1|vp8|vp9|hevc_hdr|av1_hdr|hevc_10bit|av1_10bit|h264_vulkan] [-ac aac|opus|flac] [-ab <bitrate>] [-oc yes|no] [-fm cfr|vfr|content] [-bm auto|qp|vbr] [-cr limited|full] [-df yes|no] [-sc <script_path>] [-cursor yes|no] [-keyint <value>] [-restore-portal-session yes|no] [-portal-session-token-filepath filepath] [-encoder gpu|cpu] [-o <output_file>] [-v yes|no] [--version] [-h|--help]\n", program_name);
 }
 
 // TODO: Update with portal info
@@ -1020,8 +1023,8 @@ static void usage_full() {
     fprintf(stderr, "        and the video will only be saved when the gpu-screen-recorder is closed. This feature is similar to Nvidia's instant replay feature.\n");
     fprintf(stderr, "        This option has be between 5 and 1200. Note that the replay buffer size will not always be precise, because of keyframes. Optional, disabled by default.\n");
     fprintf(stderr, "\n");
-    fprintf(stderr, "  -k    Video codec to use. Should be either 'auto', 'h264', 'hevc', 'av1', 'vp8', 'vp9', 'hevc_hdr', 'av1_hdr', 'hevc_10bit' or 'av1_10bit'. Optional, set to 'auto' by default which defaults to 'h264'.\n");
+    fprintf(stderr, "  -k    Video codec to use. Should be either 'auto', 'h264', 'hevc', 'av1', 'vp8', 'vp9', 'hevc_hdr', 'av1_hdr', 'hevc_10bit', 'av1_10bit' or 'h264_vulkan'.\n");
-    fprintf(stderr, "        Forcefully set to 'h264' if the file container type is 'flv'.\n");
+    fprintf(stderr, "        Optional, set to 'auto' by default which defaults to 'h264'. Forcefully set to 'h264' if the file container type is 'flv'.\n");
     fprintf(stderr, "        'hevc_hdr' and 'av1_hdr' option is not available on X11 nor when using the portal capture option.\n");
     fprintf(stderr, "        'hevc_10bit' and 'av1_10bit' options allow you to select 10 bit color depth which can reduce banding and improve quality in darker areas, but not all video players support 10 bit color depth\n");
     fprintf(stderr, "        and if you upload the video to a website the website might reduce 10 bit to 8 bit.\n");
@@ -1081,7 +1084,7 @@ static void usage_full() {
     fprintf(stderr, "\n");
     fprintf(stderr, "  --info\n");
     fprintf(stderr, "        List info about the system (for use by GPU Screen Recorder UI). Lists the following information (prints them to stdout and exits):\n");
-    fprintf(stderr, "        Supported video codecs (h264, h264_software, hevc, hevc_hdr, hevc_10bit, av1, av1_hdr, av1_10bit, vp8, vp9, (if supported)).\n");
+    fprintf(stderr, "        Supported video codecs (h264, h264_software, hevc, hevc_hdr, hevc_10bit, av1, av1_hdr, av1_10bit, vp8, vp9, h264_vulkan (if supported)).\n");
     fprintf(stderr, "        Supported capture options (window, focused, screen, monitors and portal, if supported by the system).\n");
     fprintf(stderr, "        If opengl initialization fails then the program exits with 22, if no usable drm device is found then it exits with 23. On success it exits with 0.\n");
     fprintf(stderr, "\n");
@@ -1625,7 +1628,7 @@ static int init_filter_graph(AVCodecContext *audio_codec_context, AVFilterGraph
     return 0;
 }
 
-static gsr_video_encoder* create_video_encoder(gsr_egl *egl, bool overclock, gsr_color_depth color_depth, bool use_software_video_encoder) {
+static gsr_video_encoder* create_video_encoder(gsr_egl *egl, bool overclock, gsr_color_depth color_depth, bool use_software_video_encoder, VideoCodec video_codec) {
     gsr_video_encoder *video_encoder = nullptr;
 
     if(use_software_video_encoder) {
@@ -1636,6 +1639,14 @@ static gsr_video_encoder* create_video_encoder(gsr_egl *egl, bool overclock, gsr
         return video_encoder;
     }
 
+    if(video_codec == VideoCodec::H264_VULKAN) {
+        gsr_video_encoder_vulkan_params params;
+        params.egl = egl;
+        params.color_depth = color_depth;
+        video_encoder = gsr_video_encoder_vulkan_create(&params);
+        return video_encoder;
+    }
+
     switch(egl->gpu_info.vendor) {
         case GSR_GPU_VENDOR_AMD:
         case GSR_GPU_VENDOR_INTEL: {
@@ -1658,7 +1669,7 @@ static gsr_video_encoder* create_video_encoder(gsr_egl *egl, bool overclock, gsr
     return video_encoder;
 }
 
-static bool get_supported_video_codecs(gsr_egl *egl, bool use_software_video_encoder, bool cleanup, gsr_supported_video_codecs *video_codecs) {
+static bool get_supported_video_codecs(gsr_egl *egl, VideoCodec video_codec, bool use_software_video_encoder, bool cleanup, gsr_supported_video_codecs *video_codecs) {
     memset(video_codecs, 0, sizeof(*video_codecs));
 
     if(use_software_video_encoder) {
@@ -1666,6 +1677,9 @@ static bool get_supported_video_codecs(gsr_egl *egl, bool use_software_video_enc
         return true;
     }
 
+    if(video_codec == VideoCodec::H264_VULKAN)
+        return gsr_get_supported_video_codecs_vulkan(video_codecs, egl->card_path, cleanup);
+
     switch(egl->gpu_info.vendor) {
         case GSR_GPU_VENDOR_AMD:
         case GSR_GPU_VENDOR_INTEL:
@@ -1741,6 +1755,8 @@ static const AVCodec* get_ffmpeg_video_codec(VideoCodec video_codec, gsr_gpu_ven
             return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp8_nvenc" : "vp8_vaapi");
         case VideoCodec::VP9:
             return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp9_nvenc" : "vp9_vaapi");
+        case VideoCodec::H264_VULKAN:
+            return avcodec_find_encoder_by_name("h264_vulkan");
     }
     return nullptr;
 }
@@ -1773,14 +1789,15 @@ static void set_supported_video_codecs_ffmpeg(gsr_supported_video_codecs *suppor
 
 static void list_supported_video_codecs(gsr_egl *egl, bool wayland) {
     // Dont clean it up on purpose to increase shutdown speed
-    gsr_video_encoder *video_encoder = create_video_encoder(egl, false, GSR_COLOR_DEPTH_8_BITS, false);
-    if(!video_encoder)
-        return;
-    
     gsr_supported_video_codecs supported_video_codecs;
-    get_supported_video_codecs(egl, false, false, &supported_video_codecs);
+    get_supported_video_codecs(egl, VideoCodec::H264, false, false, &supported_video_codecs);
     set_supported_video_codecs_ffmpeg(&supported_video_codecs, egl->gpu_info.vendor);
 
+    gsr_supported_video_codecs supported_video_codecs_vulkan;
+    get_supported_video_codecs(egl, VideoCodec::H264_VULKAN, false, false, &supported_video_codecs_vulkan);
+    if(!get_ffmpeg_video_codec(VideoCodec::H264_VULKAN, egl->gpu_info.vendor))
+        memset(&supported_video_codecs_vulkan, 0, sizeof(supported_video_codecs_vulkan));
+
     if(supported_video_codecs.h264)
         puts("h264");
     if(avcodec_find_encoder_by_name("libx264"))
@@ -1801,6 +1818,8 @@ static void list_supported_video_codecs(gsr_egl *egl, bool wayland) {
         puts("vp8");
     if(supported_video_codecs.vp9)
         puts("vp9");
+    if(supported_video_codecs_vulkan.h264)
+        puts("h264_vulkan");
 }
 
 static bool monitor_capture_use_drm(gsr_egl *egl, bool wayland) {
@@ -2107,11 +2126,14 @@ static gsr_capture* create_capture_impl(std::string &window_str, const char *scr
     return capture;
 }
 
-static AVPixelFormat get_pixel_format(gsr_gpu_vendor vendor, bool use_software_video_encoder) {
+static AVPixelFormat get_pixel_format(VideoCodec video_codec, gsr_gpu_vendor vendor, bool use_software_video_encoder) {
     if(use_software_video_encoder) {
         return AV_PIX_FMT_NV12;
     } else {
-        return vendor == GSR_GPU_VENDOR_NVIDIA ? AV_PIX_FMT_CUDA : AV_PIX_FMT_VAAPI;
+        if(video_codec == VideoCodec::H264_VULKAN)
+            return AV_PIX_FMT_VULKAN;
+        else
+            return vendor == GSR_GPU_VENDOR_NVIDIA ? AV_PIX_FMT_CUDA : AV_PIX_FMT_VAAPI;
     }
 }
 
@@ -2229,15 +2251,16 @@ static AudioCodec select_audio_codec_with_fallback(AudioCodec audio_codec, const
 
 static const char* video_codec_to_string(VideoCodec video_codec) {
     switch(video_codec) { 
-        case VideoCodec::H264:       return "h264";
+        case VideoCodec::H264:        return "h264";
-        case VideoCodec::HEVC:       return "hevc";
+        case VideoCodec::HEVC:        return "hevc";
-        case VideoCodec::HEVC_HDR:   return "hevc_hdr";
+        case VideoCodec::HEVC_HDR:    return "hevc_hdr";
-        case VideoCodec::HEVC_10BIT: return "hevc_10bit";
+        case VideoCodec::HEVC_10BIT:  return "hevc_10bit";
-        case VideoCodec::AV1:        return "av1";
+        case VideoCodec::AV1:         return "av1";
-        case VideoCodec::AV1_HDR:    return "av1_hdr";
+        case VideoCodec::AV1_HDR:     return "av1_hdr";
-        case VideoCodec::AV1_10BIT:  return "av1_10bit";
+        case VideoCodec::AV1_10BIT:   return "av1_10bit";
-        case VideoCodec::VP8:        return "vp8";
+        case VideoCodec::VP8:         return "vp8";
-        case VideoCodec::VP9:        return "vp9";
+        case VideoCodec::VP9:         return "vp9";
+        case VideoCodec::H264_VULKAN: return "h264_vulkan";
     }
     return "";
 }
@@ -2246,7 +2269,7 @@ static const AVCodec* pick_video_codec(VideoCodec *video_codec, gsr_egl *egl, bo
     // TODO: software encoder for hevc, av1, vp8 and vp9
 
     gsr_supported_video_codecs supported_video_codecs;
-    if(!get_supported_video_codecs(egl, use_software_video_encoder, true, &supported_video_codecs)) {
+    if(!get_supported_video_codecs(egl, *video_codec, use_software_video_encoder, true, &supported_video_codecs)) {
         fprintf(stderr, "Error: failed to query for supported video codecs\n");
         _exit(11);
     }
@@ -2301,6 +2324,11 @@ static const AVCodec* pick_video_codec(VideoCodec *video_codec, gsr_egl *egl, bo
                 video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
             break;
         }
+        case VideoCodec::H264_VULKAN: {
+            if(supported_video_codecs.h264)
+                video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
+            break;
+        }
     }
 
     if(!video_codec_auto && !video_codec_f && !is_flv) {
@@ -2336,6 +2364,19 @@ static const AVCodec* pick_video_codec(VideoCodec *video_codec, gsr_egl *egl, bo
             case VideoCodec::VP9:
                 // TODO: Cant fallback to other codec because webm only supports vp8/vp9
                 break;
+            case VideoCodec::H264_VULKAN: {
+                fprintf(stderr, "Warning: selected video codec h264_vulkan is not supported, trying h264 instead\n");
+                video_codec_to_use = "h264";
+                *video_codec = VideoCodec::H264;
+                // Need to do a query again because this time it's without vulkan
+                if(!get_supported_video_codecs(egl, *video_codec, use_software_video_encoder, true, &supported_video_codecs)) {
+                    fprintf(stderr, "Error: failed to query for supported video codecs\n");
+                    _exit(11);
+                }
+                if(supported_video_codecs.h264)
+                    video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
+                break;
+            }
         }
     }
 
@@ -2532,8 +2573,10 @@ int main(int argc, char **argv) {
         video_codec = VideoCodec::VP8;
     } else if(strcmp(video_codec_to_use, "vp9") == 0) {
         video_codec = VideoCodec::VP9;
+    } else if(strcmp(video_codec_to_use, "h264_vulkan") == 0) {
+        video_codec = VideoCodec::H264_VULKAN;
     } else if(strcmp(video_codec_to_use, "auto") != 0) {
-        fprintf(stderr, "Error: -k should either be either 'auto', 'h264', 'hevc', 'av1', 'vp8', 'vp9', 'hevc_hdr', 'av1_hdr', 'hevc_10bit' or 'av1_10bit', got: '%s'\n", video_codec_to_use);
+        fprintf(stderr, "Error: -k should either be either 'auto', 'h264', 'hevc', 'av1', 'vp8', 'vp9', 'hevc_hdr', 'av1_hdr', 'hevc_10bit', 'av1_10bit' or 'h264_vulkan', got: '%s'\n", video_codec_to_use);
         usage();
     }
 
@@ -3010,7 +3053,8 @@ int main(int argc, char **argv) {
     const bool hdr = video_codec_is_hdr(video_codec);
     const bool low_latency_recording = is_livestream || is_output_piped;
 
-    AVCodecContext *video_codec_context = create_video_codec_context(get_pixel_format(egl.gpu_info.vendor, use_software_video_encoder), quality, fps, video_codec_f, low_latency_recording, egl.gpu_info.vendor, framerate_mode, hdr, color_range, keyint, use_software_video_encoder, bitrate_mode);
+    const enum AVPixelFormat video_pix_fmt = get_pixel_format(video_codec, egl.gpu_info.vendor, use_software_video_encoder);
+    AVCodecContext *video_codec_context = create_video_codec_context(video_pix_fmt, quality, fps, video_codec_f, low_latency_recording, egl.gpu_info.vendor, framerate_mode, hdr, color_range, keyint, use_software_video_encoder, bitrate_mode);
     if(replay_buffer_size_secs == -1)
         video_stream = create_stream(av_format_context, video_codec_context);
 
@@ -3034,7 +3078,7 @@ int main(int argc, char **argv) {
         _exit(capture_result);
     }
 
-    gsr_video_encoder *video_encoder = create_video_encoder(&egl, overclock, color_depth, use_software_video_encoder);
+    gsr_video_encoder *video_encoder = create_video_encoder(&egl, overclock, color_depth, use_software_video_encoder, video_codec);
     if(!video_encoder) {
         fprintf(stderr, "Error: failed to create video encoder\n");
         _exit(1);
@@ -3479,8 +3523,7 @@ int main(int argc, char **argv) {
                 egl.glClear(0);
                 gsr_capture_capture(capture, video_frame, &color_conversion);
                 gsr_egl_swap_buffers(&egl);
-
+                gsr_video_encoder_copy_textures_to_frame(video_encoder, video_frame, &color_conversion);
-                gsr_video_encoder_copy_textures_to_frame(video_encoder, video_frame);
 
                 if(hdr && !hdr_metadata_set && replay_buffer_size_secs == -1 && add_hdr_metadata_to_video_stream(capture, video_stream))
                     hdr_metadata_set = true;