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gl-renderer: Add support for a few YUV dmabuf formats

Browse Source 
Namely the single-planar YUYV, the two-planar NV12, and the
three-planar YUV420, using the shaders already present in Weston.

Signed-off-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>

Maniphest Tasks: T13

Differential Revision: https://phabricator.freedesktop.org/D334
dev
Emmanuel Gil Peyrot 9 years ago committed by Derek Foreman
parent b8053505f4
commit bc35fdaed1
1 changed files with 252 additions and 43 deletions
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  1. 295
      src/gl-renderer.c

295
src/gl-renderer.c
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@ -101,11 +101,36 @@ struct egl_image {
int refcount;
};
enum import_type {
IMPORT_TYPE_INVALID,
IMPORT_TYPE_DIRECT,
IMPORT_TYPE_GL_CONVERSION
};
struct dmabuf_image {
struct linux_dmabuf_buffer *dmabuf;
int num_images;
struct egl_image *images[3];
struct wl_list link;
enum import_type import_type;
GLenum target;
struct gl_shader *shader;
};
struct yuv_plane_descriptor {
int width_divisor;
int height_divisor;
uint32_t format;
int plane_index;
};
struct yuv_format_descriptor {
uint32_t format;
int input_planes;
int output_planes;
int texture_type;
struct yuv_plane_descriptor plane[4];
};
struct gl_surface_state {
@ -1517,25 +1542,219 @@ import_simple_dmabuf(struct gl_renderer *gr,
return image;
}
/* The kernel header drm_fourcc.h defines the DRM formats below. We duplicate
* some of the definitions here so that building Weston won't require
* bleeding-edge kernel headers.
*/
#ifndef DRM_FORMAT_R8
#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
#endif
#ifndef DRM_FORMAT_GR88
#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
#endif
struct yuv_format_descriptor yuv_formats[] = {
{
.format = DRM_FORMAT_YUYV,
.input_planes = 1,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_XUXV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_GR88,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 1,
.format = DRM_FORMAT_ARGB8888,
.plane_index = 0
}}
}, {
.format = DRM_FORMAT_NV12,
.input_planes = 2,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_UV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_GR88,
.plane_index = 1
}}
}, {
.format = DRM_FORMAT_YUV420,
.input_planes = 3,
.output_planes = 3,
.texture_type = EGL_TEXTURE_Y_U_V_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 1
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 2
}}
}
};
static struct egl_image *
import_dmabuf_single_plane(struct gl_renderer *gr,
const struct dmabuf_attributes *attributes,
struct yuv_plane_descriptor *descriptor)
{
struct dmabuf_attributes plane;
struct egl_image *image;
char fmt[4];
plane.width = attributes->width / descriptor->width_divisor;
plane.height = attributes->height / descriptor->height_divisor;
plane.format = descriptor->format;
plane.n_planes = 1;
plane.fd[0] = attributes->fd[descriptor->plane_index];
plane.offset[0] = attributes->offset[descriptor->plane_index];
plane.stride[0] = attributes->stride[descriptor->plane_index];
plane.modifier[0] = attributes->modifier[descriptor->plane_index];
image = import_simple_dmabuf(gr, &plane);
if (!image) {
weston_log("Failed to import plane %d as %.4s\n",
descriptor->plane_index,
dump_format(descriptor->format, fmt));
return NULL;
}
return image;
}
static bool
import_yuv_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
unsigned i;
int j;
int ret;
struct yuv_format_descriptor *format = NULL;
struct dmabuf_attributes *attributes = &image->dmabuf->attributes;
char fmt[4];
for (i = 0; i < ARRAY_LENGTH(yuv_formats); ++i) {
if (yuv_formats[i].format == attributes->format) {
format = &yuv_formats[i];
break;
}
}
if (!format) {
weston_log("Error during import, and no known conversion for format "
"%.4s in the renderer",
dump_format(attributes->format, fmt));
return false;
}
if (attributes->n_planes != format->input_planes) {
weston_log("%.4s dmabuf must contain %d plane%s (%d provided)",
dump_format(format->format, fmt),
format->input_planes,
(format->input_planes > 1) ? "s" : "",
attributes->n_planes);
return false;
}
for (j = 0; j < format->output_planes; ++j) {
image->images[j] = import_dmabuf_single_plane(gr, attributes,
&format->plane[j]);
if (!image->images[j]) {
while (j) {
ret = egl_image_unref(image->images[--j]);
assert(ret == 0);
}
return false;
}
}
image->num_images = format->output_planes;
switch (format->texture_type) {
case EGL_TEXTURE_Y_XUXV_WL:
image->shader = &gr->texture_shader_y_xuxv;
break;
case EGL_TEXTURE_Y_UV_WL:
image->shader = &gr->texture_shader_y_uv;
break;
case EGL_TEXTURE_Y_U_V_WL:
image->shader = &gr->texture_shader_y_u_v;
break;
default:
assert(false);
}
return true;
}
static GLenum
choose_texture_target(struct dmabuf_attributes *attributes)
{
if (attributes->n_planes > 1)
return GL_TEXTURE_EXTERNAL_OES;
switch (attributes->format & ~DRM_FORMAT_BIG_ENDIAN) {
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
case DRM_FORMAT_AYUV:
return GL_TEXTURE_EXTERNAL_OES;
default:
return GL_TEXTURE_2D;
}
}
static struct dmabuf_image *
import_dmabuf(struct gl_renderer *gr,
struct linux_dmabuf_buffer *dmabuf)
{
struct egl_image *egl_image;
struct dmabuf_image *image;
char fmt[4];
egl_image = import_simple_dmabuf(gr, &dmabuf->attributes);
if (!egl_image) {
weston_log("Format %.4s unsupported by EGL, aborting\n",
dump_format(dmabuf->attributes.format, fmt));
return NULL;
}
image = dmabuf_image_create();
image->dmabuf = dmabuf;
image->num_images = 1;
image->images[0] = egl_image;
egl_image = import_simple_dmabuf(gr, &dmabuf->attributes);
if (egl_image) {
image->num_images = 1;
image->images[0] = egl_image;
image->import_type = IMPORT_TYPE_DIRECT;
image->target = choose_texture_target(&dmabuf->attributes);
switch (image->target) {
case GL_TEXTURE_2D:
image->shader = &gr->texture_shader_rgba;
break;
default:
image->shader = &gr->texture_shader_egl_external;
}
} else {
if (!import_yuv_dmabuf(gr, image)) {
dmabuf_image_destroy(image);
return NULL;
}
image->import_type = IMPORT_TYPE_GL_CONVERSION;
image->target = GL_TEXTURE_2D;
}
return image;
}
@ -1571,22 +1790,28 @@ gl_renderer_import_dmabuf(struct weston_compositor *ec,
return true;
}
static GLenum
choose_texture_target(struct dmabuf_attributes *attributes)
static bool
import_known_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
if (attributes->n_planes > 1)
return GL_TEXTURE_EXTERNAL_OES;
switch (image->import_type) {
case IMPORT_TYPE_DIRECT:
image->images[0] = import_simple_dmabuf(gr, &image->dmabuf->attributes);
if (!image->images[0])
return false;
break;
case IMPORT_TYPE_GL_CONVERSION:
if (!import_yuv_dmabuf(gr, image))
return false;
break;
switch (attributes->format & ~DRM_FORMAT_BIG_ENDIAN) {
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
case DRM_FORMAT_AYUV:
return GL_TEXTURE_EXTERNAL_OES;
default:
return GL_TEXTURE_2D;
weston_log("Invalid import type for dmabuf\n");
return false;
}
return true;
}
static void
@ -1615,15 +1840,6 @@ gl_renderer_attach_dmabuf(struct weston_surface *surface,
egl_image_unref(gs->images[i]);
gs->num_images = 0;
gs->target = choose_texture_target(&dmabuf->attributes);
switch (gs->target) {
case GL_TEXTURE_2D:
gs->shader = &gr->texture_shader_rgba;
break;
default:
gs->shader = &gr->texture_shader_egl_external;
}
/*
* We try to always hold an imported EGLImage from the dmabuf
* to prevent the client from preventing re-imports. But, we also
@ -1642,24 +1858,16 @@ gl_renderer_attach_dmabuf(struct weston_surface *surface,
assert(ret == 0);
}
for (i = 0; i < image->num_images; ++i) {
image->images[i] = import_simple_dmabuf(gr, &image->dmabuf->attributes);
if (!image->images[i]) {
image->num_images = 0;
while (i) {
ret = egl_image_unref(image->images[--i]);
assert(ret == 0);
}
linux_dmabuf_buffer_send_server_error(dmabuf,
"EGL dmabuf import failed");
return;
}
if (!import_known_dmabuf(gr, image)) {
linux_dmabuf_buffer_send_server_error(dmabuf, "EGL dmabuf import failed");
return;
}
gs->num_images = image->num_images;
for (i = 0; i < gs->num_images; ++i)
gs->images[i] = egl_image_ref(image->images[i]);
gs->target = image->target;
ensure_textures(gs, gs->num_images);
for (i = 0; i < gs->num_images; ++i) {
glActiveTexture(GL_TEXTURE0 + i);
@ -1667,6 +1875,7 @@ gl_renderer_attach_dmabuf(struct weston_surface *surface,
gr->image_target_texture_2d(gs->target, gs->images[i]->image);
}
gs->shader = image->shader;
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;

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