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mpv/video/out/hwdec/dmabuf_interop_gl.c

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/*
* 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 "dmabuf_interop.h"
#include <drm_fourcc.h>
#include <EGL/egl.h>
#include "video/out/opengl/ra_gl.h"
typedef void* GLeglImageOES;
typedef void *EGLImageKHR;
// Any EGL_EXT_image_dma_buf_import definitions used in this source file.
#define EGL_LINUX_DMA_BUF_EXT 0x3270
#define EGL_LINUX_DRM_FOURCC_EXT 0x3271
#define EGL_DMA_BUF_PLANE0_FD_EXT 0x3272
#define EGL_DMA_BUF_PLANE0_OFFSET_EXT 0x3273
#define EGL_DMA_BUF_PLANE0_PITCH_EXT 0x3274
#define EGL_DMA_BUF_PLANE1_FD_EXT 0x3275
#define EGL_DMA_BUF_PLANE1_OFFSET_EXT 0x3276
#define EGL_DMA_BUF_PLANE1_PITCH_EXT 0x3277
#define EGL_DMA_BUF_PLANE2_FD_EXT 0x3278
#define EGL_DMA_BUF_PLANE2_OFFSET_EXT 0x3279
#define EGL_DMA_BUF_PLANE2_PITCH_EXT 0x327A
// Any EGL_EXT_image_dma_buf_import definitions used in this source file.
#define EGL_DMA_BUF_PLANE3_FD_EXT 0x3440
#define EGL_DMA_BUF_PLANE3_OFFSET_EXT 0x3441
#define EGL_DMA_BUF_PLANE3_PITCH_EXT 0x3442
#define EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT 0x3443
#define EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT 0x3444
#define EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT 0x3445
#define EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT 0x3446
#define EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT 0x3447
#define EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT 0x3448
#define EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT 0x3449
#define EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT 0x344A
struct vaapi_gl_mapper_priv {
GLuint gl_textures[4];
EGLImageKHR images[4];
EGLImageKHR (EGLAPIENTRY *CreateImageKHR)(EGLDisplay, EGLContext,
EGLenum, EGLClientBuffer,
const EGLint *);
EGLBoolean (EGLAPIENTRY *DestroyImageKHR)(EGLDisplay, EGLImageKHR);
void (EGLAPIENTRY *EGLImageTargetTexture2DOES)(GLenum, GLeglImageOES);
};
static bool vaapi_gl_mapper_init(struct ra_hwdec_mapper *mapper,
const struct ra_imgfmt_desc *desc)
{
struct dmabuf_interop_priv *p_mapper = mapper->priv;
struct vaapi_gl_mapper_priv *p = talloc_ptrtype(NULL, p);
p_mapper->interop_mapper_priv = p;
*p = (struct vaapi_gl_mapper_priv) {
// EGL_KHR_image_base
.CreateImageKHR = (void *)eglGetProcAddress("eglCreateImageKHR"),
.DestroyImageKHR = (void *)eglGetProcAddress("eglDestroyImageKHR"),
// GL_OES_EGL_image
.EGLImageTargetTexture2DOES =
(void *)eglGetProcAddress("glEGLImageTargetTexture2DOES"),
};
if (!p->CreateImageKHR || !p->DestroyImageKHR ||
!p->EGLImageTargetTexture2DOES)
return false;
GL *gl = ra_gl_get(mapper->ra);
gl->GenTextures(4, p->gl_textures);
for (int n = 0; n < desc->num_planes; n++) {
gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl->BindTexture(GL_TEXTURE_2D, 0);
struct ra_tex_params params = {
.dimensions = 2,
.w = mp_image_plane_w(&p_mapper->layout, n),
.h = mp_image_plane_h(&p_mapper->layout, n),
.d = 1,
.format = desc->planes[n],
.render_src = true,
.src_linear = true,
};
if (params.format->ctype != RA_CTYPE_UNORM)
return false;
p_mapper->tex[n] = ra_create_wrapped_tex(mapper->ra, &params,
p->gl_textures[n]);
if (!p_mapper->tex[n])
return false;
}
return true;
}
static void vaapi_gl_mapper_uninit(const struct ra_hwdec_mapper *mapper)
{
struct dmabuf_interop_priv *p_mapper = mapper->priv;
struct vaapi_gl_mapper_priv *p = p_mapper->interop_mapper_priv;
if (p) {
GL *gl = ra_gl_get(mapper->ra);
gl->DeleteTextures(4, p->gl_textures);
for (int n = 0; n < 4; n++) {
p->gl_textures[n] = 0;
ra_tex_free(mapper->ra, &p_mapper->tex[n]);
}
talloc_free(p);
p_mapper->interop_mapper_priv = NULL;
}
}
#define ADD_ATTRIB(name, value) \
do { \
assert(num_attribs + 3 < MP_ARRAY_SIZE(attribs)); \
attribs[num_attribs++] = (name); \
attribs[num_attribs++] = (value); \
attribs[num_attribs] = EGL_NONE; \
} while(0)
#define ADD_PLANE_ATTRIBS(plane) do { \
uint64_t drm_format_modifier = p_mapper->desc.objects[p_mapper->desc.layers[i].planes[j].object_index].format_modifier; \
ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _FD_EXT, \
p_mapper->desc.objects[p_mapper->desc.layers[i].planes[j].object_index].fd); \
ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _OFFSET_EXT, \
p_mapper->desc.layers[i].planes[j].offset); \
ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _PITCH_EXT, \
p_mapper->desc.layers[i].planes[j].pitch); \
if (dmabuf_interop->use_modifiers && drm_format_modifier != DRM_FORMAT_MOD_INVALID) { \
ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _MODIFIER_LO_EXT, drm_format_modifier & 0xfffffffful); \
ADD_ATTRIB(EGL_DMA_BUF_PLANE ## plane ## _MODIFIER_HI_EXT, drm_format_modifier >> 32); \
} \
} while (0)
static bool vaapi_gl_map(struct ra_hwdec_mapper *mapper,
struct dmabuf_interop *dmabuf_interop,
bool probing)
{
struct dmabuf_interop_priv *p_mapper = mapper->priv;
struct vaapi_gl_mapper_priv *p = p_mapper->interop_mapper_priv;
GL *gl = ra_gl_get(mapper->ra);
for (int i = 0, n = 0; i < p_mapper->desc.nb_layers; i++) {
/*
* As we must map surfaces as one texture per plane, we can only support
* a subset of possible multi-plane layer formats. This is due to having
* to manually establish what DRM format each synthetic layer should
* have.
*/
uint32_t format[AV_DRM_MAX_PLANES] = {
p_mapper->desc.layers[i].format,
};
if (p_mapper->desc.layers[i].nb_planes > 1) {
switch (p_mapper->desc.layers[i].format) {
case DRM_FORMAT_NV12:
format[0] = DRM_FORMAT_R8;
format[1] = DRM_FORMAT_GR88;
break;
case DRM_FORMAT_YUV420:
format[0] = DRM_FORMAT_R8;
format[1] = DRM_FORMAT_R8;
format[2] = DRM_FORMAT_R8;
break;
case DRM_FORMAT_P010:
format[0] = DRM_FORMAT_R16;
format[1] = DRM_FORMAT_GR1616;
break;
default:
mp_msg(mapper->log, probing ? MSGL_DEBUG : MSGL_ERR,
"Cannot map unknown multi-plane format: 0x%08X\n",
p_mapper->desc.layers[i].format);
return false;
}
} else {
/*
* As OpenGL only has one guaranteed rgba format (rgba8), drivers
* that support importing dmabuf formats with different channel
* orders do implicit swizzling to get to rgba. However, we look at
* the original imgfmt to decide channel order, and we then swizzle
* based on that. So, we can get into a situation where we swizzle
* twice and end up with a mess.
*
* The simplest way to avoid that is to lie to OpenGL and say that
* the surface we are importing is in the natural channel order, so
* that our swizzling does the right thing.
*
* DRM ABGR corresponds to OpenGL RGBA due to different naming
* conventions.
*/
switch (format[0]) {
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_BGRA8888:
format[0] = DRM_FORMAT_ABGR8888;
break;
case DRM_FORMAT_XRGB8888:
format[0] = DRM_FORMAT_XBGR8888;
break;
case DRM_FORMAT_RGBX8888:
case DRM_FORMAT_BGRX8888:
// Logically, these two formats should be handled as above,
// but there appear to be additional problems that make the
// format change here insufficient or incorrect, so we're
// doing nothing for now.
break;
}
}
for (int j = 0; j < p_mapper->desc.layers[i].nb_planes; j++, n++) {
int attribs[48] = {EGL_NONE};
int num_attribs = 0;
ADD_ATTRIB(EGL_LINUX_DRM_FOURCC_EXT, format[j]);
ADD_ATTRIB(EGL_WIDTH, p_mapper->tex[n]->params.w);
ADD_ATTRIB(EGL_HEIGHT, p_mapper->tex[n]->params.h);
ADD_PLANE_ATTRIBS(0);
p->images[n] = p->CreateImageKHR(eglGetCurrentDisplay(),
EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
if (!p->images[n]) {
mp_msg(mapper->log, probing ? MSGL_DEBUG : MSGL_ERR,
"Failed to import surface in EGL: %u\n", eglGetError());
return false;
}
gl->BindTexture(GL_TEXTURE_2D, p->gl_textures[n]);
p->EGLImageTargetTexture2DOES(GL_TEXTURE_2D, p->images[n]);
mapper->tex[n] = p_mapper->tex[n];
}
}
gl->BindTexture(GL_TEXTURE_2D, 0);
return true;
}
static void vaapi_gl_unmap(struct ra_hwdec_mapper *mapper)
{
struct dmabuf_interop_priv *p_mapper = mapper->priv;
struct vaapi_gl_mapper_priv *p = p_mapper->interop_mapper_priv;
if (p) {
for (int n = 0; n < 4; n++) {
if (p->images[n])
p->DestroyImageKHR(eglGetCurrentDisplay(), p->images[n]);
p->images[n] = 0;
}
}
}
bool dmabuf_interop_gl_init(const struct ra_hwdec *hw,
struct dmabuf_interop *dmabuf_interop)
{
if (!ra_is_gl(hw->ra)) {
// This is not an OpenGL RA.
return false;
}
if (!eglGetCurrentContext())
return false;
const char *exts = eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS);
if (!exts)
return false;
GL *gl = ra_gl_get(hw->ra);
if (!gl_check_extension(exts, "EGL_EXT_image_dma_buf_import") ||
!gl_check_extension(exts, "EGL_KHR_image_base") ||
!gl_check_extension(gl->extensions, "GL_OES_EGL_image") ||
!(gl->mpgl_caps & MPGL_CAP_TEX_RG))
return false;
dmabuf_interop->use_modifiers =
gl_check_extension(exts, "EGL_EXT_image_dma_buf_import_modifiers");
MP_VERBOSE(hw, "using EGL dmabuf interop\n");
dmabuf_interop->interop_init = vaapi_gl_mapper_init;
dmabuf_interop->interop_uninit = vaapi_gl_mapper_uninit;
dmabuf_interop->interop_map = vaapi_gl_map;
dmabuf_interop->interop_unmap = vaapi_gl_unmap;
return true;
}
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