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/* |
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* video_sdl.cpp - Video/graphics emulation, SDL specific stuff |
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* |
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* Basilisk II (C) 1997-2004 Christian Bauer |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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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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#include "video.h" |
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#include "video_defs.h" |
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#include "video_blit.h" |
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#include "vm_alloc.h" |
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#define DEBUG 0 |
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#include "debug.h" |
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#endif |
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// Constants |
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#ifdef WIN32 |
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const char KEYCODE_FILE_NAME[] = "BasiliskII_keycodes"; |
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#else |
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const char KEYCODE_FILE_NAME[] = DATADIR "/keycodes"; |
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#endif |
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|
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|
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// Global variables |
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static bool redraw_thread_active = false; // Flag: Redraw thread installed |
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static volatile bool redraw_thread_cancel; // Flag: Cancel Redraw thread |
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static SDL_Thread *redraw_thread = NULL; // Redraw thread |
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static volatile bool thread_stop_req = false; |
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static volatile bool thread_stop_ack = false; // Acknowledge for thread_stop_req |
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|
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#ifdef ENABLE_VOSF |
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static bool use_vosf = false; // Flag: VOSF enabled |
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/* |
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* Framebuffer allocation routines |
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*/ |
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|
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static void *vm_acquire_framebuffer(uint32 size) |
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{ |
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#ifdef SHEEPSHAVER |
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#ifdef DIRECT_ADDRESSING_HACK |
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const uint32 FRAME_BUFFER_BASE = 0x61000000; |
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uint8 *fb = Mac2HostAddr(FRAME_BUFFER_BASE); |
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if (vm_acquire_fixed(fb, size) < 0) |
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fb = VM_MAP_FAILED; |
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return fb; |
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#endif |
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#endif |
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return vm_acquire(size); |
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} |
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|
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static inline void vm_release_framebuffer(void *fb, uint32 size) |
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{ |
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vm_release(fb, size); |
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} |
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|
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|
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/* |
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* SheepShaver glue |
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*/ |
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if (s) |
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SDL_FreeSurface(s); |
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|
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// the_buffer shall always be mapped through vm_acquire_framebuffer() |
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if (the_buffer != VM_MAP_FAILED) { |
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D(bug(" releasing the_buffer at %p (%d bytes)\n", the_buffer, the_buffer_size)); |
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vm_release_framebuffer(the_buffer, the_buffer_size); |
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the_buffer = NULL; |
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} |
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|
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// Free frame buffer(s) |
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if (!use_vosf) { |
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if (the_buffer) { |
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free(the_buffer); |
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the_buffer = NULL; |
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} |
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if (the_buffer_copy) { |
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free(the_buffer_copy); |
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the_buffer_copy = NULL; |
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} |
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#ifdef ENABLE_VOSF |
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else { |
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// the_buffer shall always be mapped through vm_acquire() so that we can vm_protect() it at will |
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if (the_buffer != VM_MAP_FAILED) { |
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D(bug(" releasing the_buffer at %p (%d bytes)\n", the_buffer, the_buffer_size)); |
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vm_release(the_buffer, the_buffer_size); |
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the_buffer = NULL; |
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} |
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if (the_host_buffer) { |
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D(bug(" freeing the_host_buffer at %p\n", the_host_buffer)); |
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free(the_host_buffer); |
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free(the_buffer_copy); |
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the_buffer_copy = NULL; |
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} |
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|
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// Deinitialize VOSF |
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video_vosf_exit(); |
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} |
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#endif |
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} |
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// Allocate memory for frame buffer (SIZE is extended to page-boundary) |
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the_host_buffer = (uint8 *)s->pixels; |
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the_buffer_size = page_extend((aligned_height + 2) * s->pitch); |
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the_buffer = (uint8 *)vm_acquire(the_buffer_size); |
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the_buffer = (uint8 *)vm_acquire_framebuffer(the_buffer_size); |
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the_buffer_copy = (uint8 *)malloc(the_buffer_size); |
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D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer)); |
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// Allocate memory for frame buffer |
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the_buffer_size = (aligned_height + 2) * s->pitch; |
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the_buffer_copy = (uint8 *)calloc(1, the_buffer_size); |
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the_buffer = (uint8 *)calloc(1, the_buffer_size); |
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the_buffer = (uint8 *)vm_acquire_framebuffer(the_buffer_size); |
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D(bug("the_buffer = %p, the_buffer_copy = %p\n", the_buffer, the_buffer_copy)); |
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} |
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SDL_VideoDriverName(video_driver, sizeof(video_driver)); |
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bool video_driver_found = false; |
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char line[256]; |
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int n_keys = 0; |
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while (fgets(line, sizeof(line) - 1, f)) { |
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// Read line |
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int len = strlen(line); |
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continue; |
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if (video_driver_found) { |
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// Skip aliases |
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// Skip aliases as long as we have read keycodes yet |
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// Otherwise, it's another mapping and we have to stop |
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static const char sdl_str[] = "sdl"; |
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if (strncmp(line, sdl_str, sizeof(sdl_str) - 1) == 0) |
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if (strncmp(line, sdl_str, sizeof(sdl_str) - 1) == 0 && n_keys == 0) |
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continue; |
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// Read keycode |
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int x_code, mac_code; |
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if (sscanf(line, "%d %d", &x_code, &mac_code) == 2) |
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keycode_table[x_code & 0xff] = mac_code; |
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keycode_table[x_code & 0xff] = mac_code, n_keys++; |
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else |
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break; |
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} else { |
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WarningAlert(str); |
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return; |
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} |
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|
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D(bug("Using SDL/%s keycodes table, %d key mappings\n", video_driver, n_keys)); |
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} |
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} |
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UNLOCK_FRAME_BUFFER; |
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D(bug(" frame buffer unlocked\n")); |
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#ifdef ENABLE_VOSF |
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if (use_vosf) { |
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// Deinitialize VOSF |
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video_vosf_exit(); |
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} |
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#endif |
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|
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// Close display |
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delete drv; |
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drv = NULL; |
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csSave->saveData = ReadMacInt32(ParamPtr + csData); |
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csSave->savePage = ReadMacInt16(ParamPtr + csPage); |
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// Disable interrupts |
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// Disable interrupts and pause redraw thread |
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DisableInterrupt(); |
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thread_stop_ack = false; |
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thread_stop_req = true; |
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while (!thread_stop_ack) ; |
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cur_mode = i; |
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monitor_desc *monitor = VideoMonitors[0]; |
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csSave->saveData=VModes[cur_mode].viAppleID;/* First mode ... */ |
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csSave->saveMode=VModes[cur_mode].viAppleMode; |
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// Enable interrupts |
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// Enable interrupts and resume redraw thread |
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thread_stop_req = false; |
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EnableInterrupt(); |
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return noErr; |
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} |
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next = GetTicks_usec(); |
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ticks++; |
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#ifdef SHEEPSHAVER |
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// Pause if requested (during video mode switches) |
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if (thread_stop_req) { |
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thread_stop_ack = true; |
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continue; |
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} |
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#endif |
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|
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// Handle SDL events |
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handle_events(); |
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