mpv/video/out/hwdec/hwdec_vulkan.c

323 lines
9.9 KiB
C

/*
* Copyright (c) 2022 Philip Langdale <philipl@overt.org>
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "video/out/gpu/hwdec.h"
#include "video/out/vulkan/context.h"
#include "video/out/placebo/ra_pl.h"
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vulkan.h>
struct vulkan_hw_priv {
struct mp_hwdec_ctx hwctx;
pl_gpu gpu;
};
struct vulkan_mapper_priv {
struct mp_image layout;
AVVkFrame *vkf;
pl_tex tex[4];
};
static void lock_queue(struct AVHWDeviceContext *ctx,
uint32_t queue_family, uint32_t index)
{
pl_vulkan vulkan = ctx->user_opaque;
vulkan->lock_queue(vulkan, queue_family, index);
}
static void unlock_queue(struct AVHWDeviceContext *ctx,
uint32_t queue_family, uint32_t index)
{
pl_vulkan vulkan = ctx->user_opaque;
vulkan->unlock_queue(vulkan, queue_family, index);
}
static int vulkan_init(struct ra_hwdec *hw)
{
AVBufferRef *hw_device_ctx = NULL;
int ret = 0;
struct vulkan_hw_priv *p = hw->priv;
struct mpvk_ctx *vk = ra_vk_ctx_get(hw->ra_ctx);
if (!vk) {
MP_ERR(hw, "This is not a libplacebo vulkan gpu api context.\n");
return 0;
}
p->gpu = ra_pl_get(hw->ra_ctx->ra);
if (!p->gpu) {
MP_ERR(hw, "Failed to obtain pl_gpu.\n");
return 0;
}
/*
* libplacebo initialises all queues, but we still need to discover which
* one is the decode queue.
*/
uint32_t num_qf = 0;
VkQueueFamilyProperties *qf = NULL;
vkGetPhysicalDeviceQueueFamilyProperties(vk->vulkan->phys_device, &num_qf, NULL);
if (!num_qf)
goto error;
qf = talloc_array(NULL, VkQueueFamilyProperties, num_qf);
vkGetPhysicalDeviceQueueFamilyProperties(vk->vulkan->phys_device, &num_qf, qf);
int decode_index = -1, decode_count = 0;
for (int i = 0; i < num_qf; i++) {
/*
* Pick the first discovered decode queue that we find. Maybe a day will
* come when this needs to be smarter, but I'm sure a bunch of other
* things will have to change too.
*/
if ((qf[i].queueFlags) & VK_QUEUE_VIDEO_DECODE_BIT_KHR) {
decode_index = i;
decode_count = qf[i].queueCount;
}
}
hw_device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VULKAN);
if (!hw_device_ctx)
goto error;
AVHWDeviceContext *device_ctx = (void *)hw_device_ctx->data;
AVVulkanDeviceContext *device_hwctx = device_ctx->hwctx;
device_ctx->user_opaque = (void *)vk->vulkan;
device_hwctx->lock_queue = lock_queue;
device_hwctx->unlock_queue = unlock_queue;
device_hwctx->get_proc_addr = vk->vkinst->get_proc_addr;
device_hwctx->inst = vk->vkinst->instance;
device_hwctx->phys_dev = vk->vulkan->phys_device;
device_hwctx->act_dev = vk->vulkan->device;
device_hwctx->device_features = *vk->vulkan->features;
device_hwctx->enabled_inst_extensions = vk->vkinst->extensions;
device_hwctx->nb_enabled_inst_extensions = vk->vkinst->num_extensions;
device_hwctx->enabled_dev_extensions = vk->vulkan->extensions;
device_hwctx->nb_enabled_dev_extensions = vk->vulkan->num_extensions;
device_hwctx->queue_family_index = vk->vulkan->queue_graphics.index;
device_hwctx->nb_graphics_queues = vk->vulkan->queue_graphics.count;
device_hwctx->queue_family_tx_index = vk->vulkan->queue_transfer.index;
device_hwctx->nb_tx_queues = vk->vulkan->queue_transfer.count;
device_hwctx->queue_family_comp_index = vk->vulkan->queue_compute.index;
device_hwctx->nb_comp_queues = vk->vulkan->queue_compute.count;
device_hwctx->queue_family_decode_index = decode_index;
device_hwctx->nb_decode_queues = decode_count;
ret = av_hwdevice_ctx_init(hw_device_ctx);
if (ret < 0) {
MP_ERR(hw, "av_hwdevice_ctx_init failed\n");
goto error;
}
p->hwctx = (struct mp_hwdec_ctx) {
.driver_name = hw->driver->name,
.av_device_ref = hw_device_ctx,
.hw_imgfmt = IMGFMT_VULKAN,
};
hwdec_devices_add(hw->devs, &p->hwctx);
talloc_free(qf);
return 0;
error:
talloc_free(qf);
av_buffer_unref(&hw_device_ctx);
return -1;
}
static void vulkan_uninit(struct ra_hwdec *hw)
{
struct vulkan_hw_priv *p = hw->priv;
hwdec_devices_remove(hw->devs, &p->hwctx);
av_buffer_unref(&p->hwctx.av_device_ref);
}
static int mapper_init(struct ra_hwdec_mapper *mapper)
{
struct vulkan_mapper_priv *p = mapper->priv;
mapper->dst_params = mapper->src_params;
mapper->dst_params.imgfmt = mapper->src_params.hw_subfmt;
mapper->dst_params.hw_subfmt = 0;
mp_image_set_params(&p->layout, &mapper->dst_params);
struct ra_imgfmt_desc desc = {0};
if (!ra_get_imgfmt_desc(mapper->ra, mapper->dst_params.imgfmt, &desc))
return -1;
return 0;
}
static void mapper_uninit(struct ra_hwdec_mapper *mapper)
{
}
static void mapper_unmap(struct ra_hwdec_mapper *mapper)
{
struct vulkan_hw_priv *p_owner = mapper->owner->priv;
struct vulkan_mapper_priv *p = mapper->priv;
if (!mapper->src)
goto end;
AVHWFramesContext *hwfc = (AVHWFramesContext *) mapper->src->hwctx->data;;
const AVVulkanFramesContext *vkfc = hwfc->hwctx;;
AVVkFrame *vkf = p->vkf;
int num_images;
for (num_images = 0; (vkf->img[num_images] != NULL); num_images++);
for (int i = 0; (p->tex[i] != NULL); i++) {
pl_tex *tex = &p->tex[i];
if (!*tex)
continue;
// If we have multiple planes and one image, then that is a multiplane
// frame. Anything else is treated as one-image-per-plane.
int index = p->layout.num_planes > 1 && num_images == 1 ? 0 : i;
// Update AVVkFrame state to reflect current layout
bool ok = pl_vulkan_hold_ex(p_owner->gpu, pl_vulkan_hold_params(
.tex = *tex,
.out_layout = &vkf->layout[index],
.qf = VK_QUEUE_FAMILY_IGNORED,
.semaphore = (pl_vulkan_sem) {
.sem = vkf->sem[index],
.value = vkf->sem_value[index] + 1,
},
));
vkf->access[index] = 0;
vkf->sem_value[index] += !!ok;
*tex = NULL;
}
vkfc->unlock_frame(hwfc, vkf);
end:
for (int i = 0; i < p->layout.num_planes; i++)
ra_tex_free(mapper->ra, &mapper->tex[i]);
p->vkf = NULL;
}
static int mapper_map(struct ra_hwdec_mapper *mapper)
{
bool result = false;
struct vulkan_hw_priv *p_owner = mapper->owner->priv;
struct vulkan_mapper_priv *p = mapper->priv;
pl_vulkan vk = pl_vulkan_get(p_owner->gpu);
if (!vk)
return -1;
AVHWFramesContext *hwfc = (AVHWFramesContext *) mapper->src->hwctx->data;
const AVVulkanFramesContext *vkfc = hwfc->hwctx;
AVVkFrame *vkf = (AVVkFrame *) mapper->src->planes[0];
int num_images;
for (num_images = 0; (vkf->img[num_images] != NULL); num_images++);
const VkFormat *vk_fmt = av_vkfmt_from_pixfmt(hwfc->sw_format);
vkfc->lock_frame(hwfc, vkf);
for (int i = 0; i < p->layout.num_planes; i++) {
pl_tex *tex = &p->tex[i];
VkImageAspectFlags aspect = VK_IMAGE_ASPECT_COLOR_BIT;
int index = i;
// If we have multiple planes and one image, then that is a multiplane
// frame. Anything else is treated as one-image-per-plane.
if (p->layout.num_planes > 1 && num_images == 1) {
index = 0;
switch (i) {
case 0:
aspect = VK_IMAGE_ASPECT_PLANE_0_BIT_KHR;
break;
case 1:
aspect = VK_IMAGE_ASPECT_PLANE_1_BIT_KHR;
break;
case 2:
aspect = VK_IMAGE_ASPECT_PLANE_2_BIT_KHR;
break;
default:
goto error;
}
}
*tex = pl_vulkan_wrap(p_owner->gpu, pl_vulkan_wrap_params(
.image = vkf->img[index],
.width = mp_image_plane_w(&p->layout, i),
.height = mp_image_plane_h(&p->layout, i),
.format = vk_fmt[i],
.usage = vkfc->usage,
.aspect = aspect,
));
if (!*tex)
goto error;
pl_vulkan_release_ex(p_owner->gpu, pl_vulkan_release_params(
.tex = p->tex[i],
.layout = vkf->layout[index],
.qf = VK_QUEUE_FAMILY_IGNORED,
.semaphore = (pl_vulkan_sem) {
.sem = vkf->sem[index],
.value = vkf->sem_value[index],
},
));
struct ra_tex *ratex = talloc_ptrtype(NULL, ratex);
result = mppl_wrap_tex(mapper->ra, *tex, ratex);
if (!result) {
pl_tex_destroy(p_owner->gpu, tex);
talloc_free(ratex);
goto error;
}
mapper->tex[i] = ratex;
}
p->vkf = vkf;
return 0;
error:
vkfc->unlock_frame(hwfc, vkf);
mapper_unmap(mapper);
return -1;
}
const struct ra_hwdec_driver ra_hwdec_vulkan = {
.name = "vulkan",
.imgfmts = {IMGFMT_VULKAN, 0},
.priv_size = sizeof(struct vulkan_hw_priv),
.init = vulkan_init,
.uninit = vulkan_uninit,
.mapper = &(const struct ra_hwdec_mapper_driver){
.priv_size = sizeof(struct vulkan_mapper_priv),
.init = mapper_init,
.uninit = mapper_uninit,
.map = mapper_map,
.unmap = mapper_unmap,
},
};