ref: 1e674fdb3338c137128eac6259bed85583b2925e
dir: /examples/dp_renderer_placebo.c/
/*
* Copyright © 2020, VideoLAN and dav1d authors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "dp_renderer.h"
#ifdef HAVE_RENDERER_PLACEBO
#include <assert.h>
#include <libplacebo/renderer.h>
#include <libplacebo/utils/upload.h>
#ifdef HAVE_PLACEBO_VULKAN
# include <libplacebo/vulkan.h>
# include <SDL_vulkan.h>
#endif
#ifdef HAVE_PLACEBO_OPENGL
# include <libplacebo/opengl.h>
# include <SDL_opengl.h>
#endif
/**
* Renderer context for libplacebo
*/
typedef struct renderer_priv_ctx
{
// SDL window
SDL_Window *win;
// Placebo context
struct pl_context *ctx;
// Placebo renderer
struct pl_renderer *renderer;
#ifdef HAVE_PLACEBO_VULKAN
// Placebo Vulkan handle
const struct pl_vulkan *vk;
// Placebo Vulkan instance
const struct pl_vk_inst *vk_inst;
// Vulkan surface
VkSurfaceKHR surf;
#endif
#ifdef HAVE_PLACEBO_OPENGL
// Placebo OpenGL handle
const struct pl_opengl *gl;
#endif
// Placebo GPU
const struct pl_gpu *gpu;
// Placebo swapchain
const struct pl_swapchain *swapchain;
// Lock protecting access to the texture
SDL_mutex *lock;
// Image to render, and planes backing them
struct pl_image image;
const struct pl_tex *plane_tex[3];
} Dav1dPlayRendererPrivateContext;
static Dav1dPlayRendererPrivateContext*
placebo_renderer_create_common(int window_flags)
{
// Create Window
SDL_Window *sdlwin = dp_create_sdl_window(window_flags | SDL_WINDOW_RESIZABLE);
if (sdlwin == NULL)
return NULL;
// Alloc
Dav1dPlayRendererPrivateContext *rd_priv_ctx = malloc(sizeof(Dav1dPlayRendererPrivateContext));
if (rd_priv_ctx == NULL) {
return NULL;
}
*rd_priv_ctx = (Dav1dPlayRendererPrivateContext) {0};
rd_priv_ctx->win = sdlwin;
// Init libplacebo
rd_priv_ctx->ctx = pl_context_create(PL_API_VER, &(struct pl_context_params) {
.log_cb = pl_log_color,
#ifndef NDEBUG
.log_level = PL_LOG_DEBUG,
#else
.log_level = PL_LOG_WARN,
#endif
});
if (rd_priv_ctx->ctx == NULL) {
free(rd_priv_ctx);
return NULL;
}
// Create Mutex
rd_priv_ctx->lock = SDL_CreateMutex();
if (rd_priv_ctx->lock == NULL) {
fprintf(stderr, "SDL_CreateMutex failed: %s\n", SDL_GetError());
pl_context_destroy(&(rd_priv_ctx->ctx));
free(rd_priv_ctx);
return NULL;
}
return rd_priv_ctx;
}
#ifdef HAVE_PLACEBO_OPENGL
static void *placebo_renderer_create_gl()
{
SDL_Window *sdlwin = NULL;
SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
// Common init
Dav1dPlayRendererPrivateContext *rd_priv_ctx =
placebo_renderer_create_common(SDL_WINDOW_OPENGL);
if (rd_priv_ctx == NULL)
return NULL;
sdlwin = rd_priv_ctx->win;
// Init OpenGL
struct pl_opengl_params params = pl_opengl_default_params;
# ifndef NDEBUG
params.debug = true;
# endif
SDL_GLContext glcontext = SDL_GL_CreateContext(sdlwin);
SDL_GL_MakeCurrent(sdlwin, glcontext);
rd_priv_ctx->gl = pl_opengl_create(rd_priv_ctx->ctx, ¶ms);
if (!rd_priv_ctx->gl) {
fprintf(stderr, "Failed creating opengl device!\n");
exit(2);
}
rd_priv_ctx->swapchain = pl_opengl_create_swapchain(rd_priv_ctx->gl,
&(struct pl_opengl_swapchain_params) {
.swap_buffers = (void (*)(void *)) SDL_GL_SwapWindow,
.priv = sdlwin,
});
if (!rd_priv_ctx->swapchain) {
fprintf(stderr, "Failed creating opengl swapchain!\n");
exit(2);
}
int w = WINDOW_WIDTH, h = WINDOW_HEIGHT;
SDL_GL_GetDrawableSize(sdlwin, &w, &h);
if (!pl_swapchain_resize(rd_priv_ctx->swapchain, &w, &h)) {
fprintf(stderr, "Failed resizing vulkan swapchain!\n");
exit(2);
}
rd_priv_ctx->gpu = rd_priv_ctx->gl->gpu;
if (w != WINDOW_WIDTH || h != WINDOW_HEIGHT)
printf("Note: window dimensions differ (got %dx%d)\n", w, h);
return rd_priv_ctx;
}
#endif
#ifdef HAVE_PLACEBO_VULKAN
static void *placebo_renderer_create_vk()
{
SDL_Window *sdlwin = NULL;
// Common init
Dav1dPlayRendererPrivateContext *rd_priv_ctx =
placebo_renderer_create_common(SDL_WINDOW_VULKAN);
if (rd_priv_ctx == NULL)
return NULL;
sdlwin = rd_priv_ctx->win;
// Init Vulkan
unsigned num = 0;
if (!SDL_Vulkan_GetInstanceExtensions(sdlwin, &num, NULL)) {
fprintf(stderr, "Failed enumerating Vulkan extensions: %s\n", SDL_GetError());
exit(1);
}
const char **extensions = malloc(num * sizeof(const char *));
assert(extensions);
SDL_bool ok = SDL_Vulkan_GetInstanceExtensions(sdlwin, &num, extensions);
if (!ok) {
fprintf(stderr, "Failed getting Vk instance extensions\n");
exit(1);
}
if (num > 0) {
printf("Requesting %d additional Vulkan extensions:\n", num);
for (unsigned i = 0; i < num; i++)
printf(" %s\n", extensions[i]);
}
struct pl_vk_inst_params iparams = pl_vk_inst_default_params;
iparams.extensions = extensions;
iparams.num_extensions = num;
rd_priv_ctx->vk_inst = pl_vk_inst_create(rd_priv_ctx->ctx, &iparams);
if (!rd_priv_ctx->vk_inst) {
fprintf(stderr, "Failed creating Vulkan instance!\n");
exit(1);
}
free(extensions);
if (!SDL_Vulkan_CreateSurface(sdlwin, rd_priv_ctx->vk_inst->instance, &rd_priv_ctx->surf)) {
fprintf(stderr, "Failed creating vulkan surface: %s\n", SDL_GetError());
exit(1);
}
struct pl_vulkan_params params = pl_vulkan_default_params;
params.instance = rd_priv_ctx->vk_inst->instance;
params.surface = rd_priv_ctx->surf;
params.allow_software = true;
rd_priv_ctx->vk = pl_vulkan_create(rd_priv_ctx->ctx, ¶ms);
if (!rd_priv_ctx->vk) {
fprintf(stderr, "Failed creating vulkan device!\n");
exit(2);
}
// Create swapchain
rd_priv_ctx->swapchain = pl_vulkan_create_swapchain(rd_priv_ctx->vk,
&(struct pl_vulkan_swapchain_params) {
.surface = rd_priv_ctx->surf,
.present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR,
});
if (!rd_priv_ctx->swapchain) {
fprintf(stderr, "Failed creating vulkan swapchain!\n");
exit(2);
}
int w = WINDOW_WIDTH, h = WINDOW_HEIGHT;
if (!pl_swapchain_resize(rd_priv_ctx->swapchain, &w, &h)) {
fprintf(stderr, "Failed resizing vulkan swapchain!\n");
exit(2);
}
rd_priv_ctx->gpu = rd_priv_ctx->vk->gpu;
if (w != WINDOW_WIDTH || h != WINDOW_HEIGHT)
printf("Note: window dimensions differ (got %dx%d)\n", w, h);
return rd_priv_ctx;
}
#endif
static void placebo_renderer_destroy(void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
pl_renderer_destroy(&(rd_priv_ctx->renderer));
pl_swapchain_destroy(&(rd_priv_ctx->swapchain));
for (int i = 0; i < 3; i++)
pl_tex_destroy(rd_priv_ctx->gpu, &(rd_priv_ctx->plane_tex[i]));
#ifdef HAVE_PLACEBO_VULKAN
if (rd_priv_ctx->vk) {
pl_vulkan_destroy(&(rd_priv_ctx->vk));
vkDestroySurfaceKHR(rd_priv_ctx->vk_inst->instance, rd_priv_ctx->surf, NULL);
pl_vk_inst_destroy(&(rd_priv_ctx->vk_inst));
}
#endif
#ifdef HAVE_PLACEBO_OPENGL
if (rd_priv_ctx->gl)
pl_opengl_destroy(&(rd_priv_ctx->gl));
#endif
SDL_DestroyWindow(rd_priv_ctx->win);
pl_context_destroy(&(rd_priv_ctx->ctx));
}
static void placebo_render(void *cookie, const Dav1dPlaySettings *settings)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (!rd_priv_ctx->image.num_planes) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
// Prepare rendering
if (rd_priv_ctx->renderer == NULL) {
rd_priv_ctx->renderer = pl_renderer_create(rd_priv_ctx->ctx, rd_priv_ctx->gpu);
}
struct pl_swapchain_frame frame;
bool ok = pl_swapchain_start_frame(rd_priv_ctx->swapchain, &frame);
if (!ok) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
struct pl_render_params render_params = {0};
if (settings->highquality)
render_params = pl_render_default_params;
struct pl_render_target target;
pl_render_target_from_swapchain(&target, &frame);
target.profile = (struct pl_icc_profile) {
.data = NULL,
.len = 0,
};
#if PL_API_VER >= 66
pl_rect2df_aspect_copy(&target.dst_rect, &rd_priv_ctx->image.src_rect, 0.0);
if (pl_render_target_partial(&target))
pl_tex_clear(rd_priv_ctx->gpu, target.fbo, (float[4]){ 0.0 });
#endif
if (!pl_render_image(rd_priv_ctx->renderer, &rd_priv_ctx->image, &target, &render_params)) {
fprintf(stderr, "Failed rendering frame!\n");
pl_tex_clear(rd_priv_ctx->gpu, target.fbo, (float[4]){ 1.0 });
}
ok = pl_swapchain_submit_frame(rd_priv_ctx->swapchain);
if (!ok) {
fprintf(stderr, "Failed submitting frame!\n");
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
pl_swapchain_swap_buffers(rd_priv_ctx->swapchain);
SDL_UnlockMutex(rd_priv_ctx->lock);
}
static int placebo_upload_image(void *cookie, Dav1dPicture *dav1d_pic,
const Dav1dPlaySettings *settings)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (dav1d_pic == NULL) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return 0;
}
int width = dav1d_pic->p.w;
int height = dav1d_pic->p.h;
int sub_x = 0, sub_y = 0;
int bytes = (dav1d_pic->p.bpc + 7) / 8; // rounded up
enum pl_chroma_location chroma_loc = PL_CHROMA_UNKNOWN;
struct pl_image *image = &rd_priv_ctx->image;
*image = (struct pl_image) {
.num_planes = 3,
.width = width,
.height = height,
.src_rect = {0, 0, width, height},
.repr = {
.bits = {
.sample_depth = bytes * 8,
.color_depth = dav1d_pic->p.bpc,
},
},
};
// Figure out the correct plane dimensions/count
switch (dav1d_pic->p.layout) {
case DAV1D_PIXEL_LAYOUT_I400:
image->num_planes = 1;
break;
case DAV1D_PIXEL_LAYOUT_I420:
sub_x = sub_y = 1;
break;
case DAV1D_PIXEL_LAYOUT_I422:
sub_x = 1;
break;
case DAV1D_PIXEL_LAYOUT_I444:
break;
}
// Set the right colorspace metadata etc.
switch (dav1d_pic->seq_hdr->pri) {
case DAV1D_COLOR_PRI_UNKNOWN: image->color.primaries = PL_COLOR_PRIM_UNKNOWN; break;
case DAV1D_COLOR_PRI_BT709: image->color.primaries = PL_COLOR_PRIM_BT_709; break;
case DAV1D_COLOR_PRI_BT470M: image->color.primaries = PL_COLOR_PRIM_BT_470M; break;
case DAV1D_COLOR_PRI_BT470BG: image->color.primaries = PL_COLOR_PRIM_BT_601_625; break;
case DAV1D_COLOR_PRI_BT601: image->color.primaries = PL_COLOR_PRIM_BT_601_625; break;
case DAV1D_COLOR_PRI_BT2020: image->color.primaries = PL_COLOR_PRIM_BT_2020; break;
case DAV1D_COLOR_PRI_XYZ:
// Handled below
assert(dav1d_pic->seq_hdr->mtrx == DAV1D_MC_IDENTITY);
break;
default:
printf("warning: unknown dav1d color primaries %d.. ignoring, picture "
"may be very incorrect\n", dav1d_pic->seq_hdr->pri);
break;
}
switch (dav1d_pic->seq_hdr->trc) {
case DAV1D_TRC_BT709:
case DAV1D_TRC_BT470M:
case DAV1D_TRC_BT470BG:
case DAV1D_TRC_BT601:
case DAV1D_TRC_SMPTE240:
case DAV1D_TRC_BT2020_10BIT:
case DAV1D_TRC_BT2020_12BIT:
// These all map to the effective "SDR" CRT-based EOTF, BT.1886
image->color.transfer = PL_COLOR_TRC_BT_1886;
break;
case DAV1D_TRC_UNKNOWN: image->color.transfer = PL_COLOR_TRC_UNKNOWN; break;
case DAV1D_TRC_LINEAR: image->color.transfer = PL_COLOR_TRC_LINEAR; break;
case DAV1D_TRC_SRGB: image->color.transfer = PL_COLOR_TRC_SRGB; break;
case DAV1D_TRC_SMPTE2084: image->color.transfer = PL_COLOR_TRC_PQ; break;
case DAV1D_TRC_HLG: image->color.transfer = PL_COLOR_TRC_HLG; break;
default:
printf("warning: unknown dav1d color transfer %d.. ignoring, picture "
"may be very incorrect\n", dav1d_pic->seq_hdr->trc);
break;
}
switch (dav1d_pic->seq_hdr->mtrx) {
case DAV1D_MC_IDENTITY:
// This is going to be either RGB or XYZ
if (dav1d_pic->seq_hdr->pri == DAV1D_COLOR_PRI_XYZ) {
image->repr.sys = PL_COLOR_SYSTEM_XYZ;
} else {
image->repr.sys = PL_COLOR_SYSTEM_RGB;
}
break;
case DAV1D_MC_UNKNOWN:
// PL_COLOR_SYSTEM_UNKNOWN maps to RGB, so hard-code this one
image->repr.sys = pl_color_system_guess_ycbcr(width, height);
break;
case DAV1D_MC_BT709: image->repr.sys = PL_COLOR_SYSTEM_BT_709; break;
case DAV1D_MC_BT601: image->repr.sys = PL_COLOR_SYSTEM_BT_601; break;
case DAV1D_MC_SMPTE240: image->repr.sys = PL_COLOR_SYSTEM_SMPTE_240M; break;
case DAV1D_MC_SMPTE_YCGCO: image->repr.sys = PL_COLOR_SYSTEM_YCGCO; break;
case DAV1D_MC_BT2020_NCL: image->repr.sys = PL_COLOR_SYSTEM_BT_2020_NC; break;
case DAV1D_MC_BT2020_CL: image->repr.sys = PL_COLOR_SYSTEM_BT_2020_C; break;
case DAV1D_MC_ICTCP:
// This one is split up based on the actual HDR curve in use
if (dav1d_pic->seq_hdr->trc == DAV1D_TRC_HLG) {
image->repr.sys = PL_COLOR_SYSTEM_BT_2100_HLG;
} else {
image->repr.sys = PL_COLOR_SYSTEM_BT_2100_PQ;
}
break;
default:
printf("warning: unknown dav1d color matrix %d.. ignoring, picture "
"may be very incorrect\n", dav1d_pic->seq_hdr->mtrx);
break;
}
if (dav1d_pic->seq_hdr->color_range) {
image->repr.levels = PL_COLOR_LEVELS_PC;
} else {
image->repr.levels = PL_COLOR_LEVELS_TV;
}
switch (dav1d_pic->seq_hdr->chr) {
case DAV1D_CHR_UNKNOWN: chroma_loc = PL_CHROMA_UNKNOWN; break;
case DAV1D_CHR_VERTICAL: chroma_loc = PL_CHROMA_LEFT; break;
case DAV1D_CHR_COLOCATED: chroma_loc = PL_CHROMA_TOP_LEFT; break;
}
#if PL_API_VER >= 63
if (settings->gpugrain && dav1d_pic->frame_hdr->film_grain.present) {
Dav1dFilmGrainData *src = &dav1d_pic->frame_hdr->film_grain.data;
struct pl_av1_grain_data *dst = &image->av1_grain;
*dst = (struct pl_av1_grain_data) {
.grain_seed = src->seed,
.num_points_y = src->num_y_points,
.chroma_scaling_from_luma = src->chroma_scaling_from_luma,
.num_points_uv = { src->num_uv_points[0], src->num_uv_points[1] },
.scaling_shift = src->scaling_shift,
.ar_coeff_lag = src->ar_coeff_lag,
.ar_coeff_shift = src->ar_coeff_shift,
.grain_scale_shift = src->grain_scale_shift,
.uv_mult = { src->uv_mult[0], src->uv_mult[1] },
.uv_mult_luma = { src->uv_luma_mult[0], src->uv_luma_mult[1] },
.uv_offset = { src->uv_offset[0], src->uv_offset[1] },
.overlap = src->overlap_flag,
};
assert(sizeof(dst->points_y) == sizeof(src->y_points));
assert(sizeof(dst->points_uv) == sizeof(src->uv_points));
assert(sizeof(dst->ar_coeffs_y) == sizeof(src->ar_coeffs_y));
memcpy(dst->points_y, src->y_points, sizeof(src->y_points));
memcpy(dst->points_uv, src->uv_points, sizeof(src->uv_points));
memcpy(dst->ar_coeffs_y, src->ar_coeffs_y, sizeof(src->ar_coeffs_y));
// this one has different row sizes for alignment
for (int c = 0; c < 2; c++) {
for (int i = 0; i < 25; i++)
dst->ar_coeffs_uv[c][i] = src->ar_coeffs_uv[c][i];
}
}
#endif
// Upload the actual planes
struct pl_plane_data data[3] = {
{
// Y plane
.type = PL_FMT_UNORM,
.width = width,
.height = height,
.pixel_stride = bytes,
.row_stride = dav1d_pic->stride[0],
.component_size = {bytes * 8},
.component_map = {0},
}, {
// U plane
.type = PL_FMT_UNORM,
.width = width >> sub_x,
.height = height >> sub_y,
.pixel_stride = bytes,
.row_stride = dav1d_pic->stride[1],
.component_size = {bytes * 8},
.component_map = {1},
}, {
// V plane
.type = PL_FMT_UNORM,
.width = width >> sub_x,
.height = height >> sub_y,
.pixel_stride = bytes,
.row_stride = dav1d_pic->stride[1],
.component_size = {bytes * 8},
.component_map = {2},
},
};
bool ok = true;
for (int i = 0; i < image->num_planes; i++) {
if (settings->zerocopy) {
const struct pl_buf *buf = dav1d_pic->allocator_data;
assert(buf);
data[i].buf = buf;
data[i].buf_offset = (uintptr_t) dav1d_pic->data[i] - (uintptr_t) buf->data;
} else {
data[i].pixels = dav1d_pic->data[i];
}
ok &= pl_upload_plane(rd_priv_ctx->gpu, &image->planes[i], &rd_priv_ctx->plane_tex[i], &data[i]);
}
// Apply the correct chroma plane shift. This has to be done after pl_upload_plane
#if PL_API_VER >= 67
pl_image_set_chroma_location(image, chroma_loc);
#else
pl_chroma_location_offset(chroma_loc, &image->planes[1].shift_x, &image->planes[1].shift_y);
pl_chroma_location_offset(chroma_loc, &image->planes[2].shift_x, &image->planes[2].shift_y);
#endif
if (!ok) {
fprintf(stderr, "Failed uploading planes!\n");
*image = (struct pl_image) {0};
}
SDL_UnlockMutex(rd_priv_ctx->lock);
return !ok;
}
// Align to power of 2
#define ALIGN2(x, align) (((x) + (align) - 1) & ~((align) - 1))
static int placebo_alloc_pic(Dav1dPicture *const p, void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
const struct pl_gpu *gpu = rd_priv_ctx->gpu;
int ret = DAV1D_ERR(ENOMEM);
// Copied from dav1d_default_picture_alloc
const int hbd = p->p.bpc > 8;
const int aligned_w = ALIGN2(p->p.w, 128);
const int aligned_h = ALIGN2(p->p.h, 128);
const int has_chroma = p->p.layout != DAV1D_PIXEL_LAYOUT_I400;
const int ss_ver = p->p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = p->p.layout != DAV1D_PIXEL_LAYOUT_I444;
p->stride[0] = aligned_w << hbd;
p->stride[1] = has_chroma ? (aligned_w >> ss_hor) << hbd : 0;
// Align strides up to multiples of the GPU performance hints
p->stride[0] = ALIGN2(p->stride[0], gpu->limits.align_tex_xfer_stride);
p->stride[1] = ALIGN2(p->stride[1], gpu->limits.align_tex_xfer_stride);
// Aligning offsets to 4 also implicity aligns to the texel size (1 or 2)
size_t off_align = ALIGN2(gpu->limits.align_tex_xfer_offset, 4);
const size_t y_sz = ALIGN2(p->stride[0] * aligned_h, off_align);
const size_t uv_sz = ALIGN2(p->stride[1] * (aligned_h >> ss_ver), off_align);
// The extra DAV1D_PICTURE_ALIGNMENTs are to brute force plane alignment,
// even in the case that the driver gives us insane alignments
const size_t pic_size = y_sz + 2 * uv_sz;
const size_t total_size = pic_size + DAV1D_PICTURE_ALIGNMENT * 4;
// Validate size limitations
if (total_size > gpu->limits.max_xfer_size) {
printf("alloc of %zu bytes exceeds limits\n", total_size);
goto err;
}
const struct pl_buf *buf = pl_buf_create(gpu, &(struct pl_buf_params) {
.type = PL_BUF_TEX_TRANSFER,
.host_mapped = true,
.size = total_size,
.memory_type = PL_BUF_MEM_HOST,
.user_data = p,
});
if (!buf) {
printf("alloc of GPU mapped buffer failed\n");
goto err;
}
assert(buf->data);
uintptr_t base = (uintptr_t) buf->data, data[3];
data[0] = ALIGN2(base, DAV1D_PICTURE_ALIGNMENT);
data[1] = ALIGN2(data[0] + y_sz, DAV1D_PICTURE_ALIGNMENT);
data[2] = ALIGN2(data[1] + uv_sz, DAV1D_PICTURE_ALIGNMENT);
// Sanity check offset alignment for the sake of debugging
if (data[0] - base != ALIGN2(data[0] - base, off_align) ||
data[1] - base != ALIGN2(data[1] - base, off_align) ||
data[2] - base != ALIGN2(data[2] - base, off_align))
{
printf("GPU buffer horribly misaligned, expect slowdown!\n");
}
p->allocator_data = (void *) buf;
p->data[0] = (void *) data[0];
p->data[1] = (void *) data[1];
p->data[2] = (void *) data[2];
ret = 0;
// fall through
err:
SDL_UnlockMutex(rd_priv_ctx->lock);
return ret;
}
static void placebo_release_pic(Dav1dPicture *pic, void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
assert(pic->allocator_data);
SDL_LockMutex(rd_priv_ctx->lock);
const struct pl_gpu *gpu = rd_priv_ctx->gpu;
pl_buf_destroy(gpu, (const struct pl_buf **) &pic->allocator_data);
SDL_UnlockMutex(rd_priv_ctx->lock);
}
#ifdef HAVE_PLACEBO_VULKAN
const Dav1dPlayRenderInfo rdr_placebo_vk = {
.name = "placebo-vk",
.create_renderer = placebo_renderer_create_vk,
.destroy_renderer = placebo_renderer_destroy,
.render = placebo_render,
.update_frame = placebo_upload_image,
.alloc_pic = placebo_alloc_pic,
.release_pic = placebo_release_pic,
# if PL_API_VER >= 63
.supports_gpu_grain = 1,
# endif
};
#else
const Dav1dPlayRenderInfo rdr_placebo_vk = { NULL };
#endif
#ifdef HAVE_PLACEBO_OPENGL
const Dav1dPlayRenderInfo rdr_placebo_gl = {
.name = "placebo-gl",
.create_renderer = placebo_renderer_create_gl,
.destroy_renderer = placebo_renderer_destroy,
.render = placebo_render,
.update_frame = placebo_upload_image,
.alloc_pic = placebo_alloc_pic,
.release_pic = placebo_release_pic,
# if PL_API_VER >= 63
.supports_gpu_grain = 1,
# endif
};
#else
const Dav1dPlayRenderInfo rdr_placebo_gl = { NULL };
#endif
#else
const Dav1dPlayRenderInfo rdr_placebo_vk = { NULL };
const Dav1dPlayRenderInfo rdr_placebo_gl = { NULL };
#endif