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dingusppc/devices/video/videoctrl.cpp
joevt 7c3bb41728 videoctrl: Add more convert frame methods. 
Also rename 1bpp and 8bpp methods to 1bpp_indexed and 8bpp_indexed.
2023-12-03 20:38:01 +01:00

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