SDL_mirframebuffer.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_MIR
#include "SDL_mirevents.h"
#include "SDL_mirframebuffer.h"
#include "SDL_mirwindow.h"
#include "SDL_mirdyn.h"
static const Uint32 mir_pixel_format_to_sdl_format[] = {
SDL_PIXELFORMAT_UNKNOWN, /* mir_pixel_format_invalid */
SDL_PIXELFORMAT_ABGR8888, /* mir_pixel_format_abgr_8888 */
SDL_PIXELFORMAT_BGR888, /* mir_pixel_format_xbgr_8888 */
SDL_PIXELFORMAT_ARGB8888, /* mir_pixel_format_argb_8888 */
SDL_PIXELFORMAT_RGB888, /* mir_pixel_format_xrgb_8888 */
SDL_PIXELFORMAT_BGR24, /* mir_pixel_format_bgr_888 */
SDL_PIXELFORMAT_RGB24, /* mir_pixel_format_rgb_888 */
SDL_PIXELFORMAT_RGB565, /* mir_pixel_format_rgb_565 */
SDL_PIXELFORMAT_RGBA5551, /* mir_pixel_format_rgba_5551 */
SDL_PIXELFORMAT_RGBA4444 /* mir_pixel_format_rgba_4444 */
};
Uint32
MIR_GetSDLPixelFormat(MirPixelFormat format)
{
return mir_pixel_format_to_sdl_format[format];
}
int
MIR_CreateWindowFramebuffer(_THIS, SDL_Window* window, Uint32* format,
void** pixels, int* pitch)
{
MIR_Data* mir_data = _this->driverdata;
mir_data->software = SDL_TRUE;
if (MIR_CreateWindow(_this, window) < 0)
return SDL_SetError("Failed to created a mir window.");
*format = MIR_GetSDLPixelFormat(mir_data->pixel_format);
if (*format == SDL_PIXELFORMAT_UNKNOWN)
return SDL_SetError("Unknown pixel format");
*pitch = (((window->w * SDL_BYTESPERPIXEL(*format)) + 3) & ~3);
*pixels = SDL_malloc(window->h*(*pitch));
if (*pixels == NULL)
return SDL_OutOfMemory();
return 0;
}
int
MIR_UpdateWindowFramebuffer(_THIS, SDL_Window* window,
const SDL_Rect* rects, int numrects)
{
MIR_Window* mir_window = window->driverdata;
MirGraphicsRegion region;
MirBufferStream* bs;
int i, j, x, y, w, h, start;
int bytes_per_pixel, bytes_per_row, s_stride, d_stride;
char* s_dest;
char* pixels;
bs = MIR_mir_surface_get_buffer_stream(mir_window->surface);
MIR_mir_buffer_stream_get_graphics_region(bs, &region);
s_dest = region.vaddr;
pixels = (char*)window->surface->pixels;
s_stride = window->surface->pitch;
d_stride = region.stride;
bytes_per_pixel = window->surface->format->BytesPerPixel;
for (i = 0; i < numrects; i++) {
s_dest = region.vaddr;
pixels = (char*)window->surface->pixels;
x = rects[i].x;
y = rects[i].y;
w = rects[i].w;
h = rects[i].h;
if (w <= 0 || h <= 0 || (x + w) <= 0 || (y + h) <= 0)
continue;
if (x < 0) {
x += w;
w += rects[i].x;
}
if (y < 0) {
y += h;
h += rects[i].y;
}
if (x + w > window->w)
w = window->w - x;
if (y + h > window->h)
h = window->h - y;
start = y * s_stride + x;
pixels += start;
s_dest += start;
bytes_per_row = bytes_per_pixel * w;
for (j = 0; j < h; j++) {
memcpy(s_dest, pixels, bytes_per_row);
pixels += s_stride;
s_dest += d_stride;
}
}
MIR_mir_buffer_stream_swap_buffers_sync(bs);
return 0;
}
void
MIR_DestroyWindowFramebuffer(_THIS, SDL_Window* window)
{
}
#endif /* SDL_VIDEO_DRIVER_MIR */
/* vi: set ts=4 sw=4 expandtab: */
SDL_PIXELFORMAT_ARGB8888
Definition: SDL_pixels.h:247
format
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1565
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
SDL_mirevents.h
SDL_Window::w
int w
Definition: SDL_sysvideo.h:78
MIR_CreateWindowFramebuffer
int MIR_CreateWindowFramebuffer(_THIS, SDL_Window *sdl_window, Uint32 *format, void **pixels, int *pitch)
SDL_PIXELFORMAT_BGR24
Definition: SDL_pixels.h:232
x
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
SDL_PixelFormat::BytesPerPixel
Uint8 BytesPerPixel
Definition: SDL_pixels.h:304
MIR_CreateWindow
int MIR_CreateWindow(_THIS, SDL_Window *window)
window
SDL_Window * window
Definition: testautomation_render.c:26
MIR_Data::pixel_format
MirPixelFormat pixel_format
Definition: SDL_mirvideo.h:39
SDL_VideoDevice::driverdata
void * driverdata
Definition: SDL_sysvideo.h:332
SDL_mirwindow.h
MIR_Window
Definition: SDL_mirwindow.h:34
SDL_BYTESPERPIXEL
#define SDL_BYTESPERPIXEL(X)
Definition: SDL_pixels.h:127
start
GLuint start
Definition: SDL_opengl.h:1564
pixels
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1565
SDL_PIXELFORMAT_RGBA4444
Definition: SDL_pixels.h:202
SDL_PIXELFORMAT_RGB888
Definition: SDL_pixels.h:235
SDL_PIXELFORMAT_BGR888
Definition: SDL_pixels.h:241
MIR_Data
Definition: SDL_mirvideo.h:34
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:114
MIR_Data::software
SDL_bool software
Definition: SDL_mirvideo.h:38
y
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
SDL_PIXELFORMAT_ABGR8888
Definition: SDL_pixels.h:253
SDL_Surface::pixels
void * pixels
Definition: SDL_surface.h:75
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
SDL_PIXELFORMAT_UNKNOWN
Definition: SDL_pixels.h:172
MIR_UpdateWindowFramebuffer
int MIR_UpdateWindowFramebuffer(_THIS, SDL_Window *sdl_window, const SDL_Rect *rects, int numrects)
SDL_Rect::x
int x
Definition: SDL_rect.h:66
SDL_mirdyn.h
SDL_TRUE
Definition: SDL_stdinc.h:129
SDL_Rect::w
int w
Definition: SDL_rect.h:67
SDL_Window::h
int h
Definition: SDL_sysvideo.h:78
MIR_DestroyWindowFramebuffer
void MIR_DestroyWindowFramebuffer(_THIS, SDL_Window *sdl_window)
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
NULL
#define NULL
Definition: begin_code.h:143
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_Surface::format
SDL_PixelFormat * format
Definition: SDL_surface.h:72
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:36
SDL_PIXELFORMAT_RGB565
Definition: SDL_pixels.h:223
memcpy
#define memcpy
Definition: SDL_malloc.c:640
SDL_Rect::h
int h
Definition: SDL_rect.h:67
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:71
rects
SDL_Rect rects[MAX_RECTS]
Definition: testintersections.c:129
SDL_PIXELFORMAT_RGBA5551
Definition: SDL_pixels.h:214
SDL_Surface::pitch
int pitch
Definition: SDL_surface.h:74
SDL_PIXELFORMAT_RGB24
Definition: SDL_pixels.h:229
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:380
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
SDL_Window::driverdata
void * driverdata
Definition: SDL_sysvideo.h:106
MIR_Window::surface
MirSurface * surface
Definition: SDL_mirwindow.h:38
SDL_Window::surface
SDL_Surface * surface
Definition: SDL_sysvideo.h:93
SDL_Rect::y
int y
Definition: SDL_rect.h:66
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_mirframebuffer.h
SDL_Rect
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
j
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int int in j)
Definition: SDL_x11sym.h:42