Mercurial > hg > xmms-sid
view src/xs_sidplay1.cc @ 764:5eee092d1b13
Rename some variables.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Mon, 05 Nov 2012 22:40:01 +0200 |
parents | 8299288df6d2 |
children | 0995fa233462 |
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/* XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS) libSIDPlay v1 support Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org> (C) Copyright 1999-2007 Tecnic Software productions (TNSP) 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 2 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "xmms-sid.h" #ifdef HAVE_SIDPLAY1 #include <stdio.h> #include "xs_sidplay1.h" #include "xs_config.h" #include <sidplay/player.h> #include <sidplay/myendian.h> #include <sidplay/fformat.h> /* Maximum audio frequency supported by libSIDPlay v1 */ #define SIDPLAY1_MAX_FREQ (48000) typedef struct { emuEngine *emu; emuConfig currConfig; sidTune *tune; guint8 *buf; size_t bufSize; } XSSIDPlay1; /* We need to 'export' all this pseudo-C++ crap */ extern "C" { /* Return song information */ #define TFUNCTION xs_sidplay1_getinfo #define TFUNCTION2 xs_sidplay1_updateinfo #define TTUNEINFO sidTuneInfo #define TTUNE sidTune #define TENGINE XSSIDPlay1 #include "xs_sidplay.h" /* Check if we can play the given file */ gboolean xs_sidplay1_probe(XSFile *f) { gchar tmpBuf[4]; if (!f) return FALSE; if (xs_fread(tmpBuf, sizeof(gchar), 4, f) != 4) return FALSE; if (!strncmp(tmpBuf, "PSID", 4)) return TRUE; else return FALSE; } /* Initialize SIDPlay1 */ gboolean xs_sidplay1_init(XSEngineState * state) { gint tmpFreq; XSSIDPlay1 *engine; assert(state); /* Allocate internal structures */ engine = (XSSIDPlay1 *) g_malloc0(sizeof(XSSIDPlay1)); if (!engine) return FALSE; /* Initialize engine */ engine->emu = new emuEngine(); if (!engine->emu) { xs_error("[SIDPlay1] Could not initialize emulation engine.\n"); g_free(engine); return FALSE; } /* Verify endianess */ if (!engine->emu->verifyEndianess()) { xs_error("[SIDPlay1] Endianess verification failed.\n"); delete engine->emu; g_free(engine); return FALSE; } state->internal = engine; /* Get current configuration */ engine->emu->getConfig(engine->currConfig); /* Configure channel parameters */ switch (state->audioChannels) { case XS_CHN_AUTOPAN: engine->currConfig.channels = SIDEMU_STEREO; engine->currConfig.autoPanning = SIDEMU_CENTEREDAUTOPANNING; engine->currConfig.volumeControl = SIDEMU_FULLPANNING; break; case XS_CHN_STEREO: engine->currConfig.channels = SIDEMU_STEREO; engine->currConfig.autoPanning = SIDEMU_NONE; engine->currConfig.volumeControl = SIDEMU_NONE; break; case XS_CHN_MONO: default: engine->currConfig.channels = SIDEMU_MONO; engine->currConfig.autoPanning = SIDEMU_NONE; engine->currConfig.volumeControl = SIDEMU_NONE; state->audioChannels = XS_CHN_MONO; break; } /* Memory mode settings */ switch (xs_cfg.memoryMode) { case XS_MPU_TRANSPARENT_ROM: engine->currConfig.memoryMode = MPU_TRANSPARENT_ROM; break; case XS_MPU_PLAYSID_ENVIRONMENT: engine->currConfig.memoryMode = MPU_PLAYSID_ENVIRONMENT; break; case XS_MPU_BANK_SWITCHING: default: engine->currConfig.memoryMode = MPU_BANK_SWITCHING; xs_cfg.memoryMode = XS_MPU_BANK_SWITCHING; break; } /* Audio parameters sanity checking and setup */ engine->currConfig.bitsPerSample = state->audioBitsPerSample; tmpFreq = state->audioFrequency; if (tmpFreq > SIDPLAY1_MAX_FREQ) tmpFreq = SIDPLAY1_MAX_FREQ; engine->currConfig.frequency = tmpFreq; switch (state->audioBitsPerSample) { case XS_RES_8BIT: switch (state->audioFormat) { case FMT_S8: state->audioFormat = FMT_S8; engine->currConfig.sampleFormat = SIDEMU_SIGNED_PCM; break; case FMT_U8: default: state->audioFormat = FMT_U8; engine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; break; } break; case XS_RES_16BIT: default: switch (state->audioFormat) { case FMT_U16_NE: case FMT_U16_LE: case FMT_U16_BE: state->audioFormat = FMT_U16_NE; engine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; break; case FMT_S16_NE: case FMT_S16_LE: case FMT_S16_BE: default: state->audioFormat = FMT_S16_NE; engine->currConfig.sampleFormat = SIDEMU_SIGNED_PCM; break; } break; } /* Clockspeed settings */ switch (xs_cfg.clockSpeed) { case XS_CLOCK_NTSC: engine->currConfig.clockSpeed = SIDTUNE_CLOCK_NTSC; break; case XS_CLOCK_PAL: default: engine->currConfig.clockSpeed = SIDTUNE_CLOCK_PAL; xs_cfg.clockSpeed = XS_CLOCK_PAL; break; } engine->currConfig.forceSongSpeed = xs_cfg.forceSpeed; /* Configure rest of the emulation */ /* if (xs_cfg.forceModel) */ engine->currConfig.mos8580 = xs_cfg.mos8580; engine->currConfig.emulateFilter = xs_cfg.emulateFilters; engine->currConfig.filterFs = xs_cfg.sid1Filter.fs; engine->currConfig.filterFm = xs_cfg.sid1Filter.fm; engine->currConfig.filterFt = xs_cfg.sid1Filter.ft; /* Now set the emulator configuration */ if (!engine->emu->setConfig(engine->currConfig)) { xs_error("[SIDPlay1] Emulator engine configuration failed!\n"); return FALSE; } /* Create sidtune object */ engine->tune = new sidTune(0); if (!engine->tune) { xs_error("[SIDPlay1] Could not initialize SIDTune object.\n"); return FALSE; } return TRUE; } /* Close SIDPlay1 engine */ void xs_sidplay1_close(XSEngineState * state) { XSSIDPlay1 *engine; assert(state); engine = (XSSIDPlay1 *) state->internal; /* Free internals */ if (engine->emu) { delete engine->emu; engine->emu = NULL; } if (engine->tune) { delete engine->tune; engine->tune = NULL; } xs_sidplay1_delete(state); g_free(engine); state->internal = NULL; } /* Initialize current song and sub-tune */ gboolean xs_sidplay1_initsong(XSEngineState * state) { XSSIDPlay1 *engine; assert(state); engine = (XSSIDPlay1 *) state->internal; if (!engine) return FALSE; if (!engine->tune) { xs_error("[SIDPlay1] SID-tune struct pointer was NULL. This should not happen, report to XMMS-SID author.\n"); return FALSE; } if (!engine->tune->getStatus()) { xs_error("[SIDPlay1] SID-tune status check failed. This should not happen, report to XMMS-SID author.\n"); return FALSE; } state->isInitialized = TRUE; return sidEmuInitializeSong(*engine->emu, *engine->tune, state->currSong); } /* Emulate and render audio data to given buffer */ guint xs_sidplay1_fillbuffer(XSEngineState * state, gchar * audioBuffer, guint audioBufSize) { XSSIDPlay1 *engine; assert(state); engine = (XSSIDPlay1 *) state->internal; if (!engine) return 0; sidEmuFillBuffer(*engine->emu, *engine->tune, audioBuffer, audioBufSize); return audioBufSize; } /* Load a given SID-tune file */ gboolean xs_sidplay1_load(XSEngineState * state, gchar * filename) { XSSIDPlay1 *engine; assert(state); state->isInitialized = FALSE; engine = (XSSIDPlay1 *) state->internal; if (!engine) return FALSE; /* Try to get the tune */ if (!filename) return FALSE; if (xs_fload_buffer(filename, &(engine->buf), &(engine->bufSize)) != 0) return FALSE; if (!engine->tune->load(engine->buf, engine->bufSize)) return FALSE; return TRUE; } /* Delete INTERNAL information */ void xs_sidplay1_delete(XSEngineState * state) { XSSIDPlay1 *engine; assert(state); engine = (XSSIDPlay1 *) state->internal; if (!engine) return; g_free(engine->buf); engine->buf = NULL; engine->bufSize = 0; } } /* extern "C" */ #endif /* HAVE_SIDPLAY1 */