added GTK UI

1 files changed, 466 insertions, 0 deletions

diff --git a/gtk/main.c b/gtk/main.c
new file mode 100644
index 0000000..7dd183a
--- /dev/null
+++ b/gtk/main.c
@@ -0,0 +1,466 @@
+#include <gtk/gtk.h>
+#include <portaudio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <cairo.h>
+
+#include "fmdriver/fmdriver_fmp.h"
+#include "fmdriver/ppz8.h"
+#include "libopna/opna.h"
+#include "libopna/opnatimer.h"
+#include "fmdsp/fmdsp.h"
+
+#define DATADIR "/.local/share/fmplayer/"
+
+enum {
+  SRATE = 55467,
+  PPZ8MIX = 0xa000,
+  FONT_ROM_SIZE = 0x84000,
+  FONT_ROM_FILESIZE = 0x46800,
+  AUDIOBUFLEN = 0,
+};
+
+static struct {
+  GtkWidget *mainwin;
+  bool pa_initialized;
+  PaStream *pastream;
+  struct opna opna;
+  struct opna_timer opna_timer;
+  struct ppz8 ppz8;
+  struct fmdriver_work work;
+  struct fmdsp fmdsp;
+  char drum_rom[OPNA_ROM_SIZE];
+  bool drum_rom_loaded;
+  char adpcm_ram[OPNA_ADPCM_RAM_SIZE];
+  struct driver_fmp *fmp;
+  void *fmpdata;
+  void *ppzbuf;
+  uint8_t vram[PC98_W*PC98_H];
+  uint8_t font[FONT_ROM_SIZE];
+  void *vram32;
+  int vram32_stride;
+} g;
+
+static void quit(void) {
+  if (g.pastream) {
+    Pa_CloseStream(g.pastream);
+  }
+  if (g.pa_initialized) Pa_Terminate();
+  free(g.fmp);
+  free(g.fmpdata);
+  free(g.ppzbuf);
+  gtk_main_quit();
+}
+
+static void on_destroy(GtkWidget *w, gpointer ptr) {
+  quit();
+}
+
+static void on_menu_quit(GtkMenuItem *menuitem, gpointer ptr) {
+  quit();
+}
+
+static void msgbox_err(const char *msg) {
+  GtkWidget *d = gtk_message_dialog_new(GTK_WINDOW(g.mainwin), GTK_DIALOG_MODAL,
+                          GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+                          msg);
+  gtk_dialog_run(GTK_DIALOG(d));
+  gtk_widget_destroy(d);
+}
+
+
+static int pastream_cb(const void *inptr, void *outptr, unsigned long frames,
+                       const PaStreamCallbackTimeInfo *timeinfo,
+                       PaStreamCallbackFlags statusFlags,
+                       void *userdata) {
+  struct opna_timer *timer = (struct opna_timer *)userdata;
+  int16_t *buf = (int16_t *)outptr;
+  memset(outptr, 0, sizeof(int16_t)*frames*2);
+  opna_timer_mix(timer, buf, frames);
+  return paContinue;
+}
+
+static void opna_int_cb(void *userptr) {
+  struct fmdriver_work *work = (struct fmdriver_work *)userptr;
+  work->driver_opna_interrupt(work);
+}
+
+static void opna_mix_cb(void *userptr, int16_t *buf, unsigned samples) {
+  struct ppz8 *ppz8 = (struct ppz8 *)userptr;
+  ppz8_mix(ppz8, buf, samples);
+}
+
+static void opna_writereg_libopna(struct fmdriver_work *work, unsigned addr, unsigned data) {
+  struct opna_timer *timer = (struct opna_timer *)work->opna;
+  opna_timer_writereg(timer, addr, data);
+}
+
+static uint8_t opna_status_libopna(struct fmdriver_work *work, bool a1) {
+  struct opna_timer *timer = (struct opna_timer *)work->opna;
+  uint8_t status = opna_timer_status(timer);
+  if (!a1) {
+    status &= 0x83;
+  }
+  return status;
+}
+
+static FILE *pvisearch(const char *filename, const char *pvibase) {
+  // TODO: not SJIS aware
+  char pviname[8+3+2] = {0};
+  char pviname_l[8+3+2] = {0};
+  strcpy(pviname, pvibase);
+  strcat(pviname, ".PVI");
+  strcpy(pviname_l, pviname);
+  for (char *c = pviname_l; *c; c++) {
+    if (('A' <= *c) && (*c <= 'Z')) {
+      *c += ('a' - 'A');
+    }
+  }
+  FILE *pvifile = fopen(pviname, "r");
+  if (pvifile) return pvifile;
+  pvifile = fopen(pviname_l, "r");
+  if (pvifile) return pvifile;
+  char *slash = strrchr(filename, '/');
+  if (!slash) return 0;
+  char *pvipath = malloc((slash-filename)+1+sizeof(pviname));
+  if (!pvipath) return 0;
+  memcpy(pvipath, filename, slash-filename+1);
+  pvipath[slash-filename+1] = 0;
+  strcat(pvipath, pviname);
+  pvifile = fopen(pvipath, "r");
+  if (pvifile) {
+    free(pvipath);
+    return pvifile;
+  }
+  pvipath[slash-filename+1] = 0;
+  strcat(pvipath, pviname_l);
+  pvifile = fopen(pvipath, "r");
+  if (pvifile) {
+    free(pvipath);
+    return pvifile;
+  }
+  free(pvipath);
+  return 0;
+}
+
+static bool loadpvi(struct fmdriver_work *work,
+                    struct driver_fmp *fmp,
+                    const char *filename) {
+  // no need to load, always success
+  if(strlen(fmp->pvi_name) == 0) return true;
+  FILE *pvifile = pvisearch(filename, fmp->pvi_name);
+  if (!pvifile) goto err;
+  if (fseek(pvifile, 0, SEEK_END) != 0) goto err_file;
+  size_t fsize;
+  {
+    long size = ftell(pvifile);
+    if (size < 0) goto err_file;
+    fsize = size;
+  }
+  if (fseek(pvifile, 0, SEEK_SET) != 0) goto err_file;
+  void *data = malloc(fsize);
+  if (!data) goto err_file;
+  if (fread(data, 1, fsize, pvifile) != fsize) goto err_memory;
+  if (!fmp_adpcm_load(work, data, fsize)) goto err_memory;
+  free(data);
+  fclose(pvifile);
+  return true;
+err_memory:
+  free(data);
+err_file:
+  fclose(pvifile);
+err:
+  return false;
+}
+
+static bool loadppzpvi(struct fmdriver_work *work,
+                    struct driver_fmp *fmp,
+                    const char *filename) {
+  // no need to load, always success
+  if(strlen(fmp->ppz_name) == 0) return true;
+  FILE *pvifile = pvisearch(filename, fmp->ppz_name);
+  if (!pvifile) goto err;
+  if (fseek(pvifile, 0, SEEK_END) != 0) goto err_file;
+  size_t fsize;
+  {
+    long size = ftell(pvifile);
+    if (size < 0) goto err_file;
+    fsize = size;
+  }
+  if (fseek(pvifile, 0, SEEK_SET) != 0) goto err_file;
+  void *data = malloc(fsize);
+  if (!data) goto err_file;
+  if (fread(data, 1, fsize, pvifile) != fsize) goto err_memory;
+  int16_t *decbuf = calloc(ppz8_pvi_decodebuf_samples(fsize), sizeof(int16_t));
+  if (!decbuf) goto err_memory;
+  if (!ppz8_pvi_load(work->ppz8, 0, data, fsize, decbuf)) goto err_decbuf;
+  free(g.ppzbuf);
+  g.ppzbuf = decbuf;
+  free(data);
+  fclose(pvifile);
+  return true;
+err_decbuf:
+  free(decbuf);
+err_memory:
+  free(data);
+err_file:
+  fclose(pvifile);
+err:
+  return false;
+}
+
+static void load_drumrom(void) {
+  const char *path = "ym2608_adpcm_rom.bin";
+  const char *home = getenv("HOME");
+  char *dpath = 0;
+  if (home) {
+    const char *datadir = DATADIR;
+    dpath = malloc(strlen(home)+strlen(datadir)+strlen(path) + 1);
+    if (dpath) {
+      strcpy(dpath, home);
+      strcat(dpath, datadir);
+      strcat(dpath, path);
+      path = dpath;
+    }
+  }
+  FILE *rhythm = fopen(path, "r");
+  free(dpath);
+  if (!rhythm) goto err;
+  if (fseek(rhythm, 0, SEEK_END) != 0) goto err_file;
+  long size = ftell(rhythm);
+  if (size != OPNA_ROM_SIZE) goto err_file;
+  if (fseek(rhythm, 0, SEEK_SET) != 0) goto err_file;
+  if (fread(g.drum_rom, 1, OPNA_ROM_SIZE, rhythm) != OPNA_ROM_SIZE) goto err_file;
+  fclose(rhythm);
+  g.drum_rom_loaded = true;
+  return;
+err_file:
+  fclose(rhythm);
+err:
+  return;
+}
+
+static void load_fontrom(void) {
+  const char *path = "font.rom";
+  const char *home = getenv("HOME");
+  char *dpath = 0;
+  if (home) {
+    const char *datadir = DATADIR;
+    dpath = malloc(strlen(home)+strlen(datadir)+strlen(path) + 1);
+    if (dpath) {
+      strcpy(dpath, home);
+      strcat(dpath, datadir);
+      strcat(dpath, path);
+      path = dpath;
+    }
+  }
+  FILE *font = fopen(path, "r");
+  free(dpath);
+  if (!font) goto err;
+  if (fseek(font, 0, SEEK_END) != 0) goto err_file;
+  long size = ftell(font);
+  if (size != FONT_ROM_FILESIZE) goto err_file;
+  if (fseek(font, 0, SEEK_SET) != 0) goto err_file;
+  uint8_t *fontbuf = malloc(FONT_ROM_FILESIZE);
+  if (!fontbuf) goto err_file;
+  if (fread(fontbuf, 1, FONT_ROM_FILESIZE, font) != FONT_ROM_FILESIZE) goto err_fontbuf;
+  fmdsp_font_from_fontrom(g.font, fontbuf);
+  free(fontbuf);
+  fclose(font);
+  return;
+err_fontbuf:
+  free(fontbuf);
+err_file:
+  fclose(font);
+err:
+  return;
+}
+
+static bool openfile(const char *path) {
+  if (!g.pa_initialized) {
+    msgbox_err("Could not initialize Portaudio");
+    goto err;
+  }
+  FILE *fmfile = fopen(path, "r");
+  if (!fmfile) {
+    msgbox_err("Cannot open file");
+    goto err;
+  }
+  if (fseek(fmfile, 0, SEEK_END) != 0) {
+    msgbox_err("cannot seek file to end");
+    goto err_file;
+  }
+  size_t filelen;
+  {
+    long tfilelen = ftell(fmfile);
+    if ((tfilelen < 0) || (tfilelen > 0xffff)) {
+      msgbox_err("invalid file length");
+      goto err_file;
+    }
+    filelen = tfilelen;
+  }
+  if (fseek(fmfile, 0, SEEK_SET) != 0) {
+    msgbox_err("cannot seek file to beginning");
+    goto err_file;
+  }
+  void *fmbuf = malloc(filelen);
+  if (!fmbuf) {
+    msgbox_err("cannot allocate memory for file");
+    goto err_file;
+  }
+  if (fread(fmbuf, 1, filelen, fmfile) != filelen) {
+    msgbox_err("cannot read file");
+    goto err_fmbuf;
+  }
+  struct driver_fmp *fmp = calloc(1, sizeof(struct driver_fmp));
+  if (!fmp) {
+    msgbox_err("cannot allocate memory for fmp");
+    goto err_fmbuf;
+  }
+  if (!fmp_load(fmp, fmbuf, filelen)) {
+    msgbox_err("invalid FMP file");
+   goto err_fmp;
+  }
+  if (!g.pastream) {
+    PaError pe = Pa_OpenDefaultStream(&g.pastream, 0, 2, paInt16, SRATE, AUDIOBUFLEN,
+                                      pastream_cb, &g.opna_timer);
+    if (pe != paNoError) {
+      msgbox_err("cannot open portaudio stream");
+      goto err_fmp;
+    }
+  } else {
+    PaError pe = Pa_StopStream(g.pastream);
+    if (pe != paNoError) {
+      msgbox_err("Portaudio Error");
+      goto err_fmp;
+    }
+  }
+  free(g.fmp);
+  g.fmp = fmp;
+  free(g.fmpdata);
+  g.fmpdata = fmbuf;
+  opna_reset(&g.opna);
+  if (!g.drum_rom_loaded) {
+    load_drumrom();
+  }
+  if (g.drum_rom_loaded) {
+    opna_drum_set_rom(&g.opna.drum, g.drum_rom);
+  }
+  opna_adpcm_set_ram_256k(&g.opna.adpcm, g.adpcm_ram);
+  ppz8_init(&g.ppz8, SRATE, PPZ8MIX);
+  opna_timer_reset(&g.opna_timer, &g.opna);
+  memset(&g.work, 0, sizeof(g.work));
+  g.work.opna_writereg = opna_writereg_libopna;
+  g.work.opna_status = opna_status_libopna;
+  g.work.opna = &g.opna_timer;
+  g.work.ppz8 = &g.ppz8;
+  g.work.ppz8_functbl = &ppz8_functbl;
+  opna_timer_set_int_callback(&g.opna_timer, opna_int_cb, &g.work);
+  opna_timer_set_mix_callback(&g.opna_timer, opna_mix_cb, &g.ppz8);
+  fmp_init(&g.work, g.fmp);
+  fmdsp_vram_init(&g.fmdsp, &g.work, g.font, g.vram);
+  loadpvi(&g.work, g.fmp, path);
+  loadppzpvi(&g.work, g.fmp, path);
+  fclose(fmfile);
+  Pa_StartStream(g.pastream);
+  return true;
+err_fmp:
+  free(fmp);
+err_fmbuf:
+  free(fmbuf);
+err_file:
+  fclose(fmfile);
+err:
+  return false;
+}
+
+static void on_file_activated(GtkFileChooser *chooser, gpointer ptr) {
+  gchar *filename = gtk_file_chooser_get_filename(chooser);
+  if (filename) {
+    openfile(filename);
+    g_free(filename);
+  }
+}
+
+static GtkWidget *create_menubar() {
+  GtkWidget *menubar = gtk_menu_bar_new();
+  GtkWidget *menu = gtk_menu_new();
+  GtkWidget *file = gtk_menu_item_new_with_label("File");
+  gtk_menu_item_set_submenu(GTK_MENU_ITEM(file), menu);
+  gtk_menu_shell_append(GTK_MENU_SHELL(menubar), file);
+  GtkWidget *open = gtk_menu_item_new_with_label("Open");
+  //g_signal_connect(open, "activate", G_CALLBACK(on_menu_open), 0);
+  gtk_menu_shell_append(GTK_MENU_SHELL(menu), open);
+  GtkWidget *quit = gtk_menu_item_new_with_label("Quit");
+  g_signal_connect(quit, "activate", G_CALLBACK(on_menu_quit), 0);
+  gtk_menu_shell_append(GTK_MENU_SHELL(menu), quit);
+  return menubar;
+}
+
+static gboolean draw_cb(GtkWidget *w,
+                 cairo_t *cr,
+                 gpointer p) {
+  fmdsp_update(&g.fmdsp, &g.work, g.vram);
+  fmdsp_vrampalette(&g.fmdsp, g.vram, g.vram32, g.vram32_stride);
+  cairo_surface_t *s = cairo_image_surface_create_for_data(
+    g.vram32, CAIRO_FORMAT_RGB24, PC98_W, PC98_H, g.vram32_stride);
+  cairo_scale(cr, 2.0, 2.0);
+  cairo_set_source_surface(cr, s, 0.0, 0.0);
+  cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
+  cairo_paint(cr);
+  cairo_surface_destroy(s);
+  return FALSE;
+}
+
+static gboolean tick_cb(GtkWidget *w,
+                        GdkFrameClock *frame_clock,
+                        gpointer p) {
+  (void)frame_clock;
+  gtk_widget_queue_draw(GTK_WIDGET(p));
+  return G_SOURCE_CONTINUE;
+}
+
+static void destroynothing(gpointer p) {
+  (void)p;
+}
+
+int main(int argc, char **argv) {
+  load_fontrom();
+  gtk_init(&argc, &argv);
+  GtkWidget *w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+  g.mainwin = w;
+  //gtk_window_set_resizable(GTK_WINDOW(w), FALSE);
+  gtk_window_set_title(GTK_WINDOW(w), "FMPlayer");
+  g_signal_connect(w, "destroy", G_CALLBACK(on_destroy), 0);
+  GtkWidget *box = gtk_vbox_new(FALSE, 0);
+  gtk_container_add(GTK_CONTAINER(w), box);
+
+  GtkWidget *menubar = create_menubar();
+  gtk_box_pack_start(GTK_BOX(box), menubar, FALSE, TRUE, 0);
+
+  GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
+  gtk_box_pack_start(GTK_BOX(box), hbox, FALSE, TRUE, 0);
+  
+  GtkWidget *drawarea = gtk_drawing_area_new();
+  gtk_widget_set_size_request(drawarea, PC98_W*2, PC98_H*2);
+  g_signal_connect(drawarea, "draw", G_CALLBACK(draw_cb), 0);
+  gtk_box_pack_start(GTK_BOX(hbox), drawarea, FALSE, TRUE, 0);
+
+  GtkWidget *filechooser = gtk_file_chooser_widget_new(GTK_FILE_CHOOSER_ACTION_OPEN);
+  g_signal_connect(filechooser, "file-activated", G_CALLBACK(on_file_activated), 0);
+  gtk_box_pack_start(GTK_BOX(hbox), filechooser, TRUE, TRUE, 0);
+
+  
+  g.pa_initialized = (Pa_Initialize() == paNoError);
+  fmdsp_init(&g.fmdsp);
+  fmdsp_vram_init(&g.fmdsp, &g.work, g.font, g.vram);
+  g.vram32_stride = cairo_format_stride_for_width(CAIRO_FORMAT_RGB24, PC98_W);
+  g.vram32 = malloc((g.vram32_stride*PC98_H)*4);
+  
+  gtk_widget_show_all(w);
+  gtk_widget_add_tick_callback(w, tick_cb, drawarea, destroynothing);
+  gtk_main();
+  return 0;
+}