diff options
Diffstat (limited to 'plugins/gme/Game_Music_Emu-0.5.2/player/player.cpp')
| -rw-r--r-- | plugins/gme/Game_Music_Emu-0.5.2/player/player.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/player/player.cpp b/plugins/gme/Game_Music_Emu-0.5.2/player/player.cpp new file mode 100644 index 00000000..a0685997 --- /dev/null +++ b/plugins/gme/Game_Music_Emu-0.5.2/player/player.cpp @@ -0,0 +1,213 @@ +/* How to play game music files with Music_Player (requires SDL library) + +Run program with path to a game music file. + +Left/Right Change track +Space Pause/unpause +E Normal/slight stereo echo/more stereo echo +-/= Adjust tempo +1-9 Toggle channel on/off +0 Reset tempo and turn channels back on */ + +int const scope_width = 512; + +#include "Music_Player.h" +#include "Audio_Scope.h" + +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include "SDL.h" + +void handle_error( const char* ); + +static bool paused; +static Audio_Scope* scope; +static Music_Player* player; +static short scope_buf [scope_width * 2]; + +static void init() +{ + // Start SDL + if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO ) < 0 ) + exit( EXIT_FAILURE ); + atexit( SDL_Quit ); + SDL_EnableKeyRepeat( 500, 80 ); + + // Init scope + scope = new Audio_Scope; + if ( !scope ) + handle_error( "Out of memory" ); + if ( scope->init( scope_width, 256 ) ) + handle_error( "Couldn't initialize scope" ); + memset( scope_buf, 0, sizeof scope_buf ); + + // Create player + player = new Music_Player; + if ( !player ) + handle_error( "Out of memory" ); + handle_error( player->init() ); + player->set_scope_buffer( scope_buf, scope_width * 2 ); +} + +static void start_track( int track, const char* path ) +{ + paused = false; + handle_error( player->start_track( track - 1 ) ); + + // update window title with track info + + long seconds = player->track_info().length / 1000; + const char* game = player->track_info().game; + if ( !*game ) + { + // extract filename + game = strrchr( path, '\\' ); // DOS + if ( !game ) + game = strrchr( path, '/' ); // UNIX + if ( !game ) + game = path; + else + game++; // skip path separator + } + + char title [512]; + sprintf( title, "%s: %d/%d %s (%ld:%02ld)", + game, track, player->track_count(), player->track_info().song, + seconds / 60, seconds % 60 ); + SDL_WM_SetCaption( title, title ); +} + +int main( int argc, char** argv ) +{ + init(); + + // Load file + const char* path = (argc > 1 ? argv [argc - 1] : "test.nsf"); + handle_error( player->load_file( path ) ); + start_track( 1, path ); + + // Main loop + int track = 1; + double tempo = 1.0; + bool running = true; + double stereo_depth = 0.0; + int muting_mask = 0; + while ( running ) + { + SDL_Delay( 1000 / 100 ); + + // Update scope + scope->draw( scope_buf, scope_width, 2 ); + + // Automatically go to next track when current one ends + if ( player->track_ended() ) + { + if ( track < player->track_count() ) + start_track( ++track, path ); + else + player->pause( paused = true ); + } + + // Handle keyboard input + SDL_Event e; + while ( SDL_PollEvent( &e ) ) + { + switch ( e.type ) + { + case SDL_QUIT: + running = false; + break; + + case SDL_KEYDOWN: + int key = e.key.keysym.sym; + switch ( key ) + { + case SDLK_q: + case SDLK_ESCAPE: // quit + running = false; + break; + + case SDLK_LEFT: // prev track + if ( !paused && !--track ) + track = 1; + start_track( track, path ); + break; + + case SDLK_RIGHT: // next track + if ( track < player->track_count() ) + start_track( ++track, path ); + break; + + case SDLK_MINUS: // reduce tempo + tempo -= 0.1; + if ( tempo < 0.1 ) + tempo = 0.1; + player->set_tempo( tempo ); + break; + + case SDLK_EQUALS: // increase tempo + tempo += 0.1; + if ( tempo > 2.0 ) + tempo = 2.0; + player->set_tempo( tempo ); + break; + + case SDLK_SPACE: // toggle pause + paused = !paused; + player->pause( paused ); + break; + + case SDLK_e: // toggle echo + stereo_depth += 0.2; + if ( stereo_depth > 0.5 ) + stereo_depth = 0; + player->set_stereo_depth( stereo_depth ); + break; + + case SDLK_0: // reset tempo and muting + tempo = 1.0; + muting_mask = 0; + player->set_tempo( tempo ); + player->mute_voices( muting_mask ); + break; + + default: + if ( SDLK_1 <= key && key <= SDLK_9 ) // toggle muting + { + muting_mask ^= 1 << (key - SDLK_1); + player->mute_voices( muting_mask ); + } + } + } + } + } + + // Cleanup + delete player; + delete scope; + + return 0; +} + +void handle_error( const char* error ) +{ + if ( error ) + { + // put error in window title + char str [256]; + sprintf( str, "Error: %s", error ); + fprintf( stderr, str ); + SDL_WM_SetCaption( str, str ); + + // wait for keyboard or mouse activity + SDL_Event e; + do + { + while ( !SDL_PollEvent( &e ) ) { } + } + while ( e.type != SDL_QUIT && e.type != SDL_KEYDOWN && e.type != SDL_MOUSEBUTTONDOWN ); + + exit( EXIT_FAILURE ); + } +} |