453 lines
14 KiB
C++
453 lines
14 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file Video Controller base class implementation. */
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#include <core/timermanager.h>
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#include <devices/common/hwinterrupt.h>
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#include <devices/video/videoctrl.h>
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#include <memaccess.h>
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#include <cinttypes>
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VideoCtrlBase::VideoCtrlBase(int width, int height)
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{
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EventManager::get_instance()->add_window_handler(this, &VideoCtrlBase::handle_events);
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this->create_display_window(width, height);
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}
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VideoCtrlBase::~VideoCtrlBase()
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{
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this->stop_refresh_task();
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}
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void VideoCtrlBase::handle_events(const WindowEvent& wnd_event) {
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this->display.handle_events(wnd_event);
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}
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// TODO: consider renaming, since it's not always a window
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void VideoCtrlBase::create_display_window(int width, int height)
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{
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bool is_initialization = this->display.configure(width, height);
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if (is_initialization) {
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this->blank_on = true; // TODO: should be true!
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this->blank_display();
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}
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this->active_width = width;
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this->active_height = height;
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}
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void VideoCtrlBase::blank_display() {
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this->display.blank();
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}
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void VideoCtrlBase::update_screen()
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{
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if (this->blank_on) {
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this->display.blank();
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return;
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}
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int cursor_x = 0;
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int cursor_y = 0;
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if (this->cursor_on) {
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this->get_cursor_position(cursor_x, cursor_y);
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}
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if (draw_fb) {
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if (this->cursor_dirty) {
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this->setup_hw_cursor();
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this->cursor_dirty = false;
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}
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this->display.update(
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this->convert_fb_cb, this->cursor_ovl_cb,
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this->cursor_on, cursor_x, cursor_y);
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}
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}
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void VideoCtrlBase::start_refresh_task() {
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this->display.configure(this->active_width, this->active_height);
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uint64_t refresh_interval = static_cast<uint64_t>(1.0f / refresh_rate * NS_PER_SEC + 0.5);
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this->refresh_task_id = TimerManager::get_instance()->add_cyclic_timer(
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refresh_interval,
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[this]() {
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// assert VBL interrupt
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this->vbl_cb(1);
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this->update_screen();
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}
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);
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if (vert_blank == 0) {
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LOG_F(ERROR, "Vertical blank is 0. Using 25 instead.");
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vert_blank = 25;
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}
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uint64_t vbl_duration = static_cast<uint64_t>((double)hori_total * vert_blank / this->pixel_clock * NS_PER_SEC + 0.5);
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this->vbl_end_task_id = TimerManager::get_instance()->add_cyclic_timer(
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refresh_interval,
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refresh_interval + vbl_duration,
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[this]() {
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// deassert VBL interrupt
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this->vbl_cb(0);
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}
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);
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}
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void VideoCtrlBase::stop_refresh_task() {
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if (this->refresh_task_id) {
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TimerManager::get_instance()->cancel_timer(this->refresh_task_id);
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this->refresh_task_id = 0;
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}
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if (this->vbl_end_task_id) {
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TimerManager::get_instance()->cancel_timer(this->vbl_end_task_id);
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this->vbl_end_task_id = 0;
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}
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}
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void VideoCtrlBase::get_palette_color(uint8_t index, uint8_t& r, uint8_t& g,
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uint8_t& b, uint8_t& a)
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{
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b = this->palette[index] & 0xFFU;
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g = (this->palette[index] >> 8) & 0xFFU;
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r = (this->palette[index] >> 16) & 0xFFU;
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a = (this->palette[index] >> 24) & 0xFFU;
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}
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void VideoCtrlBase::set_palette_color(uint8_t index, uint8_t r, uint8_t g, uint8_t b, uint8_t a)
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{
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this->palette[index] = (a << 24) | (r << 16) | (g << 8) | b;
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}
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void VideoCtrlBase::setup_hw_cursor(int cursor_width, int cursor_height)
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{
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this->display.setup_hw_cursor(
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[this](uint8_t *dst_buf, int dst_pitch) {
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this->draw_hw_cursor(dst_buf, dst_pitch);
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},
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cursor_width, cursor_height);
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this->cursor_on = true;
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}
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void VideoCtrlBase::convert_frame_1bpp_indexed(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - ((this->active_width + 7) >> 3);
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr - 1;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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uint8_t bit = 0x00;
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uint8_t c;
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for (int x = this->active_width; x > 0; x--) {
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if (!bit) {
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src_row += 1;
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bit = 0x80;
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c = *src_row;
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}
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WRITE_DWORD_LE_A(dst_row, this->palette[!!(c & bit)]);
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bit >>= 1;
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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void VideoCtrlBase::convert_frame_2bpp_indexed(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - (this->active_width >> 2);
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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uint8_t c;
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for (int x = this->active_width >> 2; x > 0; x--) {
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c = *src_row;
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WRITE_DWORD_LE_A(dst_row, this->palette[c >> 6]);
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dst_row += 4;
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WRITE_DWORD_LE_A(dst_row, this->palette[(c >> 4) & 3]);
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dst_row += 4;
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WRITE_DWORD_LE_A(dst_row, this->palette[(c >> 2) & 3]);
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dst_row += 4;
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WRITE_DWORD_LE_A(dst_row, this->palette[c & 3]);
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dst_row += 4;
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src_row += 1;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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void VideoCtrlBase::convert_frame_4bpp_indexed(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - (this->active_width >> 1);
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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uint8_t c;
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for (int x = this->active_width >> 1; x > 0; x--) {
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c = *src_row;
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WRITE_DWORD_LE_A(dst_row, this->palette[c >> 4]);
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dst_row += 4;
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WRITE_DWORD_LE_A(dst_row, this->palette[c & 15]);
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dst_row += 4;
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src_row += 1;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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void VideoCtrlBase::convert_frame_8bpp_indexed(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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WRITE_DWORD_LE_A(dst_row, this->palette[*src_row++]);
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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#if 0
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// alternative version to the above but only works for little endian host
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void VideoCtrlBase::convert_frame_8bpp_32LE_indexed(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *dst_row;
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uint32_t *src_row;
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int src_pitch;
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src_pitch = this->fb_pitch - this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = (uint32_t*)this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width >> 2; x > 0; x--) {
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uint32_t pixels = *src_row++;
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WRITE_DWORD_LE_A(dst_row , this->palette[(uint8_t)(pixels )]);
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WRITE_DWORD_LE_A(dst_row + 4, this->palette[(uint8_t)(pixels >> 8)]);
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WRITE_DWORD_LE_A(dst_row + 8, this->palette[(uint8_t)(pixels >> 16)]);
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WRITE_DWORD_LE_A(dst_row + 12, this->palette[(uint8_t)(pixels >> 24)]);
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dst_row += 16;
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}
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src_row = (uint32_t*)((uint8_t*)src_row + src_pitch);
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dst_row += dst_pitch;
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}
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}
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#endif
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// RGB332
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void VideoCtrlBase::convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = *src_row++;
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uint32_t r = ((c << 16) & 0x00E00000) | ((c << 13) & 0x001C0000) | ((c << 10) & 0x00030000);
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uint32_t g = ((c << 11) & 0x0000E000) | ((c << 8) & 0x00001C00) | ((c << 5) & 0x00000300);
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uint32_t b = ((c << 6) & 0x000000C0) | ((c << 4) & 0x00000030) | ((c << 2) & 0x0000000C) | (c & 0x00000003);
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WRITE_DWORD_LE_A(dst_row, r | g | b);
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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// RGB555
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void VideoCtrlBase::convert_frame_15bpp(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 2 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = *((uint16_t*)(src_row));
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uint32_t r = ((c << 9) & 0x00F80000) | ((c << 4) & 0x00070000);
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uint32_t g = ((c << 6) & 0x0000F800) | ((c << 1) & 0x00000700);
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uint32_t b = ((c << 3) & 0x000000F8) | ((c >> 2) & 0x00000007);
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WRITE_DWORD_LE_A(dst_row, r | g | b);
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src_row += 2;
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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// RGB555_BE
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void VideoCtrlBase::convert_frame_15bpp_BE(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 2 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = READ_WORD_BE_A(src_row);
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uint32_t r = ((c << 9) & 0x00F80000) | ((c << 4) & 0x00070000);
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uint32_t g = ((c << 6) & 0x0000F800) | ((c << 1) & 0x00000700);
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uint32_t b = ((c << 3) & 0x000000F8) | ((c >> 2) & 0x00000007);
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WRITE_DWORD_LE_A(dst_row, r | g | b);
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src_row += 2;
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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// RGB565
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void VideoCtrlBase::convert_frame_16bpp(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 2 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = *((uint16_t*)(src_row));
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uint32_t r = ((c << 8) & 0x00F80000) | ((c << 3) & 0x00070000);
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uint32_t g = ((c << 5) & 0x0000FC00) | ((c >> 1) & 0x00000300);
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uint32_t b = ((c << 3) & 0x000000F8) | ((c >> 2) & 0x00000007);
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WRITE_DWORD_LE_A(dst_row, r | g | b);
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src_row += 2;
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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// RGB888
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void VideoCtrlBase::convert_frame_24bpp(uint8_t *dst_buf, int dst_pitch)
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{
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uint8_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 3 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = this->fb_ptr;
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dst_row = dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = (src_row[0] << 16) | (src_row[1] << 8) | src_row[2];
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WRITE_DWORD_LE_A(dst_row, c);
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src_row += 3;
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dst_row += 4;
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}
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src_row += src_pitch;
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dst_row += dst_pitch;
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}
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}
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// ARGB8888
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void VideoCtrlBase::convert_frame_32bpp(uint8_t *dst_buf, int dst_pitch)
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{
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uint32_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 4 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = (uint32_t*)this->fb_ptr;
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dst_row = (uint32_t*)dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = READ_DWORD_LE_A(src_row);
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WRITE_DWORD_LE_A(dst_row, c);
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src_row++;
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dst_row++;
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}
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src_row = (uint32_t*)((uint8_t*)src_row + src_pitch);
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dst_row = (uint32_t*)((uint8_t*)dst_row + dst_pitch);
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}
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}
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// ARGB8888_BE
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void VideoCtrlBase::convert_frame_32bpp_BE(uint8_t *dst_buf, int dst_pitch)
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{
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uint32_t *src_row, *dst_row;
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int src_pitch;
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src_pitch = this->fb_pitch - 4 * this->active_width;
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dst_pitch = dst_pitch - 4 * this->active_width;
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src_row = (uint32_t*)this->fb_ptr;
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dst_row = (uint32_t*)dst_buf;
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for (int h = this->active_height; h > 0; h--) {
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for (int x = this->active_width; x > 0; x--) {
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uint32_t c = READ_DWORD_BE_A(src_row);
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WRITE_DWORD_LE_A(dst_row, c);
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src_row++;
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dst_row++;
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}
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src_row = (uint32_t*)((uint8_t*)src_row + src_pitch);
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dst_row = (uint32_t*)((uint8_t*)dst_row + dst_pitch);
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}
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}
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