Mercurial > hg > xmms-sid
view src/xs_sidplay2.cc @ 833:c0e892fa914a
Begin moving libSIDPlay2-FP stuff to a separete module by removing the
relevant parts from the libSIDPlay2 backend interface.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Thu, 08 Nov 2012 20:45:28 +0200 |
parents | b158abe91a75 |
children |
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/* XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS) libSIDPlay v2 support Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org> (C) Copyright 1999-2012 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_SIDPLAY2 #include "xs_sidplay2.h" #include "xs_slsup.h" #include "xs_config.h" #include <sidplay/sidplay2.h> #if G_BYTE_ORDER == G_BIG_ENDIAN # define SID2_NATIVE_UNSIGNED SID2_BIG_UNSIGNED # define SID2_NATIVE_SIGNED SID2_BIG_SIGNED #elif G_BYTE_ORDER == G_LITTLE_ENDIAN # define SID2_NATIVE_UNSIGNED SID2_LITTLE_UNSIGNED # define SID2_NATIVE_SIGNED SID2_LITTLE_SIGNED #else # error Unsupported endianess! #endif class XSSIDPlay2 { public: sidplay2 emu; sid2_config_t config; SidTune tune; XSSIDPlay2(void); virtual ~XSSIDPlay2(void); }; #ifdef HAVE_RESID_BUILDER # include <sidplay/builders/resid.h> #endif #ifdef HAVE_HARDSID_BUILDER # include <sidplay/builders/hardsid.h> #endif XSSIDPlay2::XSSIDPlay2(void) : tune(0) { } XSSIDPlay2::~XSSIDPlay2(void) { emu.load(NULL); } /* We need to 'export' all this pseudo-C++ crap */ extern "C" { /* Return song information */ #define TFUNCTION xs_sidplay2_getinfo #define TFUNCTION2 xs_sidplay2_updateinfo #define TTUNEINFO SidTuneInfo #define TTUNE SidTune #define TENGINE XSSIDPlay2 #include "xs_sidplay.h" /* Check if we can play the given file */ gboolean xs_sidplay2_probe(XSFile *f) { gchar tmpBuf[5]; if (!f) return FALSE; if (xs_fread(tmpBuf, sizeof(gchar), 4, f) != 4) return FALSE; if (!strncmp(tmpBuf, "PSID", 4) || !strncmp(tmpBuf, "RSID", 4)) return TRUE; else return FALSE; } /* Initialize SIDPlay2 */ gboolean xs_sidplay2_init(XSEngineState * state) { XSSIDPlay2 *engine; sid_filter_t tmpFilter; xs_sid_filter_t *f; gint i; assert(state); /* Allocate internal structures */ engine = new XSSIDPlay2(); state->internal = engine; if (!engine) return FALSE; /* Get current configuration */ engine->config = engine->emu.config(); /* Configure channels and stuff */ switch (state->audioChannels) { case XS_CHN_AUTOPAN: engine->config.playback = sid2_stereo; break; case XS_CHN_STEREO: engine->config.playback = sid2_stereo; break; case XS_CHN_MONO: default: engine->config.playback = sid2_mono; state->audioChannels = XS_CHN_MONO; break; } /* Memory mode settings */ switch (xs_cfg.memoryMode) { case XS_MPU_BANK_SWITCHING: engine->config.environment = sid2_envBS; break; case XS_MPU_TRANSPARENT_ROM: engine->config.environment = sid2_envTP; break; case XS_MPU_PLAYSID_ENVIRONMENT: engine->config.environment = sid2_envPS; break; case XS_MPU_REAL: default: engine->config.environment = sid2_envR; xs_cfg.memoryMode = XS_MPU_REAL; break; } /* Audio parameters sanity checking and setup */ engine->config.precision = state->audioBitsPerSample; engine->config.frequency = state->audioFrequency; switch (state->audioBitsPerSample) { case XS_RES_8BIT: state->audioFormat = FMT_U8; engine->config.sampleFormat = SID2_LITTLE_UNSIGNED; break; case XS_RES_16BIT: default: switch (state->audioFormat) { case FMT_U16_LE: engine->config.sampleFormat = SID2_LITTLE_UNSIGNED; break; case FMT_U16_BE: engine->config.sampleFormat = SID2_BIG_UNSIGNED; break; case FMT_U16_NE: engine->config.sampleFormat = SID2_NATIVE_UNSIGNED; break; case FMT_S16_LE: engine->config.sampleFormat = SID2_LITTLE_SIGNED; break; case FMT_S16_BE: engine->config.sampleFormat = SID2_BIG_SIGNED; break; default: state->audioFormat = FMT_S16_NE; engine->config.sampleFormat = SID2_NATIVE_SIGNED; break; } break; } /* Convert filter */ f = &(xs_cfg.sid2Filter); XSDEBUG("using filter '%s', %d points\n", f->name, f->npoints); if (f->npoints > XS_SIDPLAY2_NFPOINTS) { xs_error("[SIDPlay2] Invalid number of filter curve points (%d > %d)\n", f->npoints, XS_SIDPLAY2_NFPOINTS); f->npoints = XS_SIDPLAY2_NFPOINTS; } tmpFilter.points = f->npoints; for (i = 0; i < f->npoints; i++) { tmpFilter.cutoff[i][0] = f->points[i].x; tmpFilter.cutoff[i][1] = f->points[i].y; } /* Initialize builder object */ XSDEBUG("init builder #%i, maxsids=%i\n", xs_cfg.sid2Builder, (engine->emu.info()).maxsids); switch (xs_cfg.sid2Builder) { #ifdef HAVE_RESID_BUILDER case XS_BLD_RESID: { ReSIDBuilder *rs = new ReSIDBuilder("ReSID builder"); if (rs) { engine->config.sidEmulation = rs; if (!*rs) return FALSE; rs->create((engine->emu.info()).maxsids); if (!*rs) return FALSE; } } break; #endif #ifdef HAVE_HARDSID_BUILDER case XS_BLD_HARDSID: { HardSIDBuilder *hs = new HardSIDBuilder("HardSID builder (FP)"); engine->config.sidEmulation = (sidbuilder *) hs; if (hs) { hs->create((engine->emu.info()).maxsids); if (!*hs) { xs_error("hardSID->create() failed.\n"); return FALSE; } } } break; #endif default: xs_error("[SIDPlay2] Invalid or unsupported builder selected.\n"); break; } if (!engine->config.sidEmulation) { xs_error("[SIDPlay2] Could not initialize SIDBuilder object.\n"); return FALSE; } #if 0 // Setup filter engine->config.sidEmulation->filter(xs_cfg.emulateFilters); if (!*(engine->config.sidEmulation)) { xs_error("builder->filter(%d) failed.\n", xs_cfg.emulateFilters); return FALSE; } #endif XSDEBUG("%s\n", engine->config.sidEmulation->credits()); /* Clockspeed settings */ switch (xs_cfg.clockSpeed) { case XS_CLOCK_NTSC: engine->config.clockDefault = SID2_CLOCK_NTSC; break; default: case XS_CLOCK_PAL: engine->config.clockDefault = SID2_CLOCK_PAL; xs_cfg.clockSpeed = XS_CLOCK_PAL; break; } /* Configure rest of the emulation */ if (xs_cfg.forceSpeed) { engine->config.clockForced = true; engine->config.clockSpeed = engine->config.clockDefault; } else { engine->config.clockForced = false; engine->config.clockSpeed = SID2_CLOCK_CORRECT; } if (xs_cfg.sid2OptLevel < 0 || xs_cfg.sid2OptLevel > SID2_MAX_OPTIMISATION) { xs_error("Invalid sid2OptLevel=%d, falling back to %d.\n", xs_cfg.sid2OptLevel, SID2_DEFAULT_OPTIMISATION); xs_cfg.sid2OptLevel = SID2_DEFAULT_OPTIMISATION; } engine->config.optimisation = xs_cfg.sid2OptLevel; engine->config.sidDefault = xs_cfg.mos8580 ? SID2_MOS8580 : SID2_MOS6581; engine->config.sidModel = xs_cfg.forceModel ? engine->config.sidDefault : SID2_MODEL_CORRECT; engine->config.sidSamples = TRUE; return TRUE; } /* Close SIDPlay2 engine */ void xs_sidplay2_close(XSEngineState * state) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; xs_sidplay2_delete(state); if (engine) { delete engine; engine = NULL; } state->internal = NULL; } /* Initialize current song and sub-tune */ gboolean xs_sidplay2_initsong(XSEngineState * state) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; if (!engine) return FALSE; if (!engine->tune.selectSong(state->currSong)) { xs_error("[SIDPlay2] tune.selectSong() failed\n"); return FALSE; } if (engine->emu.load(&(engine->tune)) < 0) { xs_error("[SIDPlay2] emu.load() failed\n"); return FALSE; } if (engine->emu.config(engine->config) < 0) { xs_error("[SIDPlay2] Emulator engine configuration failed!\n"); return FALSE; } return TRUE; } /* Emulate and render audio data to given buffer */ guint xs_sidplay2_fillbuffer(XSEngineState * state, gchar * audioBuffer, guint audioBufSize) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; if (!engine) return 0; return engine->emu.play(audioBuffer, audioBufSize); } /* Load a given SID-tune file */ gboolean xs_sidplay2_load(XSEngineState * state, gchar * filename) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; if (!engine || !filename) return FALSE; engine->tune.load(filename); if (!engine->tune) { xs_error("Could not load file '%s': %s\n", filename, (engine->tune.getInfo()).statusString); return FALSE; } return TRUE; } /* Delete INTERNAL information */ void xs_sidplay2_delete(XSEngineState * state) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; } /* Hardware backend flushing */ void xs_sidplay2_flush(XSEngineState * state) { XSSIDPlay2 *engine = (XSSIDPlay2 *) state->internal; #ifdef HAVE_HARDSID_BUILDER if (xs_cfg.sid2Builder == XS_BLD_HARDSID) { ((HardSIDBuilder *) engine->config.sidEmulation)->flush(); } #endif } } /* extern "C" */ #endif /* HAVE_SIDPLAY2 */