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videoctrl: add framebuffer conversion callback.

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This commit is contained in:
Maxim Poliakovski 2021-12-07 22:47:25 +01:00
parent fff597075d
commit 476d893094
3 changed files with 25 additions and 8 deletions
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5
devices/video/atirage.cpp
View File

@ -525,6 +525,11 @@ void ATIRage::crtc_enable() {
this->refresh_rate = pixel_clock / hori_total / vert_total;
// specify framebuffer converter (hardcoded for now)
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_8bpp(dst_buf, dst_pitch);
};
LOG_F(INFO, "ATI Rage: primary CRT controller enabled:");
LOG_F(INFO, "Video mode: %s",
(this->mm_regs[ATI_CRTC_GEN_CNTL+3] & 1) ? "extended" : "VGA");

19
devices/video/videoctrl.cpp
View File

@ -28,17 +28,20 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <chrono>
#include <cinttypes>
VideoCtrlBase::VideoCtrlBase()
VideoCtrlBase::VideoCtrlBase(int width, int height)
{
LOG_F(INFO, "Create display window...");
this->active_width = width;
this->active_height = height;
// Create display window
this->display_wnd = SDL_CreateWindow(
"DingusPPC Display",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
640,
480,
this->active_width,
this->active_height,
SDL_WINDOW_OPENGL
);
@ -98,9 +101,8 @@ void VideoCtrlBase::update_screen()
SDL_LockTexture(this->disp_texture, NULL, (void **)&dst_buf, &dst_pitch);
// call texture update method (hardcoded for now)
// TODO: convert it to a callback
this->convert_frame_8bpp(dst_buf, dst_pitch);
// texture update callback to get ARGB data from guest framebuffer
this->convert_fb_cb(dst_buf, dst_pitch);
SDL_UnlockTexture(this->disp_texture);
SDL_RenderClear(this->renderer);
@ -121,6 +123,11 @@ void VideoCtrlBase::update_screen()
SDL_Delay(15);
}
void VideoCtrlBase::convert_frame_1bpp(uint8_t *dst_buf, int dst_pitch)
{
// TODO: implement me!
}
void VideoCtrlBase::convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch)
{
uint8_t *src_buf, *src_row, *dst_row, pix;

9
devices/video/videoctrl.h
View File

@ -27,15 +27,18 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <SDL.h>
#include <cinttypes>
#include <functional>
class VideoCtrlBase {
public:
VideoCtrlBase();
VideoCtrlBase(int width = 640, int height = 480);
~VideoCtrlBase();
void update_screen(void);
void convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch);
// converters for various framebuffer pixel depths
virtual void convert_frame_1bpp(uint8_t *dst_buf, int dst_pitch);
virtual void convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch);
protected:
/* CRT controller parameters */
@ -51,6 +54,8 @@ protected:
uint8_t* fb_ptr;
int fb_pitch;
std::function<void(uint8_t *dst_buf, int dst_pitch)> convert_fb_cb;
private:
SDL_Window *display_wnd;
SDL_Renderer *renderer;