Mercurial > hg > xmms-sid
view src/xs_sidplay1.cpp @ 887:89c05adc87cc
Silence a warning.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Fri, 09 Nov 2012 06:17:12 +0200 |
parents | 3a9bf45178ff |
children | a5b118c853f5 |
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/* XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS) libSIDPlay1 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 "xs_sidplay1.h" #include "xs_slsup.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; } XSSIDPlay1; /* We need to 'export' all this pseudo-C++ crap */ extern "C" { /* 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); XSDEBUG("SIDPlay1 backend initializing.\n"); /* 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; XSDEBUG("SIDPlay1 emulation configuration\n"); /* 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); XSDEBUG("SIDPlay1 backend shutdown.\n"); 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; } 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 = (XSSIDPlay1 *) state->internal; gboolean res = FALSE; guint8 *buf = NULL; size_t bufSize; if (!engine) return FALSE; if (!xs_fload_buffer(filename, &buf, &bufSize, XS_SIDBUF_SIZE, TRUE)) goto error; if (!engine->tune->load(buf, bufSize)) { xs_error("could not initialize tune from buffer, %p:%d '%s'.\n", buf, bufSize, filename); goto error; } res = TRUE; error: g_free(buf); return res; } /* Delete INTERNAL information */ void xs_sidplay1_delete(XSEngineState * state) { (void) state; } /* This function gets most of the information, though we do miss some * (those variables that are only set by libSIDPlay when tune is initialized). * Rest of the information is acquired in xs_sidplay1_updateinfo() */ XSTuneInfo *xs_sidplay1_getinfo(const gchar *filename) { XSTuneInfo *res = NULL; sidTune *tune = NULL; sidTuneInfo info; guint8 *buf = NULL; size_t bufSize; /* Check if the tune exists and is readable */ if (!xs_fload_buffer(filename, &buf, &bufSize, XS_SIDBUF_SIZE, TRUE)) { XSDEBUG("could not load file '%s'.\n", filename); goto error; } if ((tune = new sidTune(buf, bufSize)) == NULL) { XSDEBUG("could not initialize tune from '%s'.\n", filename); goto error; } if (!tune->getStatus()) { XSDEBUG("tune->getStatus() returned false for '%s'.\n", filename); goto error; } /* Get general tune information */ tune->getInfo(info); /* Allocate tuneinfo structure and set information */ res = xs_tuneinfo_new(filename, info.songs, info.startSong, info.infoString[0], info.infoString[1], info.infoString[2], info.loadAddr, info.initAddr, info.playAddr, info.dataFileLen, info.formatString, info.sidModel ); error: if (tune) delete tune; g_free(buf); return res; } /* Updates the information of currently playing tune */ gboolean xs_sidplay1_updateinfo(XSEngineState *state) { XSSIDPlay1 *engine; sidTuneInfo info; /* Check if we have required structures initialized */ if (!state || !state->tuneInfo || !state->internal) return FALSE; engine = (XSSIDPlay1 *) state->internal; if (!(engine->tune)) return FALSE; /* Get general tune information */ engine->tune->getInfo(info); /* NOTICE! Here we assume that libSIDPlay[12] headers define * SIDTUNE_SIDMODEL_* similarly to our enums in xs_config.h ... */ state->tuneInfo->sidModel = info.sidModel; if (state->currSong > 0 && state->currSong <= state->tuneInfo->nsubTunes) { gint tmpSpeed = info.clockSpeed; switch (info.clockSpeed) { case SIDTUNE_CLOCK_PAL: tmpSpeed = XS_CLOCK_PAL; break; case SIDTUNE_CLOCK_NTSC: tmpSpeed = XS_CLOCK_NTSC; break; case SIDTUNE_CLOCK_ANY: tmpSpeed = XS_CLOCK_ANY; break; case SIDTUNE_CLOCK_UNKNOWN: switch (info.songSpeed) { case SIDTUNE_SPEED_VBI: tmpSpeed = XS_CLOCK_VBI; break; case SIDTUNE_SPEED_CIA_1A: tmpSpeed = XS_CLOCK_CIA; break; default: tmpSpeed = info.songSpeed; break; } break; } state->tuneInfo->subTunes[state->currSong - 1].tuneSpeed = tmpSpeed; } return TRUE; } } /* extern "C" */ #endif /* HAVE_SIDPLAY1 */