/* in_flac - Winamp2 FLAC input plugin * Copyright (C) 2000,2001,2002,2003,2004 Josh Coalson * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include "winamp2/in2.h" #include "FLAC/all.h" #include "plugin_common/all.h" #include "share/grabbag.h" #include "share/replaygain_synthesis.h" #include "config.h" #include "infobox.h" #include "tagz.h" typedef struct { FLAC__bool abort_flag; int seek_to; int paused; unsigned total_samples; unsigned bits_per_sample; unsigned output_bits_per_sample; unsigned channels; unsigned sample_rate; unsigned length_in_msec; FLAC__bool has_replaygain; double replay_scale; DitherContext dither_context; } file_info_struct; static FLAC__bool safe_decoder_init_(const char *infilename, FLAC__FileDecoder *decoder); static void safe_decoder_finish_(FLAC__FileDecoder *decoder); static void safe_decoder_delete_(FLAC__FileDecoder *decoder); static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); static void get_description_(const char *filename, char *description, unsigned max_size); char ini_name[MAX_PATH]; flac_config_t flac_cfg; static output_config_t cfg; /* local copy */ static In_Module mod_; /* the input module (declared near the bottom of this file) */ static char lastfn_[MAX_PATH]; /* currently playing file (used for getting info on the current file) */ static int decode_pos_ms_; /* current decoding position, in milliseconds */ #define SAMPLES_PER_WRITE 576 static FLAC__int32 reservoir_[FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS][FLAC__MAX_BLOCK_SIZE * 2/*for overflow*/]; static FLAC__int32 *reservoir__[FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS] = { reservoir_[0], reservoir_[1] }; /*@@@ kind of a hard-coded hack */ static char sample_buffer_[SAMPLES_PER_WRITE * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS * (24/8) * 2]; /* (24/8) for max bytes per sample, and 2 for who knows what */ static unsigned wide_samples_in_reservoir_; static file_info_struct file_info_; static FLAC__FileDecoder *decoder_; static volatile int killDecodeThread = 0; /* the kill switch for the decode thread */ static HANDLE thread_handle = NULL; /* the handle to the decode thread */ static DWORD WINAPI DecodeThread(void *b); /* the decode thread procedure */ static void show_error(const char *message,...) { char foo[512]; va_list args; va_start(args, message); vsprintf(foo, message, args); va_end(args); MessageBox(mod_.hMainWindow, foo, "FLAC Plug-in Error", MB_ICONSTOP); } void config(HWND hwndParent) { if (DoConfig(mod_.hDllInstance, hwndParent)) WriteConfig(); } void about(HWND hwndParent) { MessageBox(hwndParent, "Winamp FLAC Plugin v" VERSION ", by Josh Coalson\nSee http://flac.sourceforge.net/", "About FLAC Plugin", MB_OK); } void init() { char *p; decoder_ = FLAC__file_decoder_new(); strcpy(lastfn_, ""); /* read config */ GetModuleFileName(NULL, ini_name, sizeof(ini_name)); p = strrchr(ini_name, '.'); if (!p) p = ini_name + strlen(ini_name); strcpy(p, ".ini"); ReadConfig(); } void quit() { WriteConfig(); safe_decoder_delete_(decoder_); decoder_ = 0; } int isourfile(char *fn) { return 0; } int play(char *fn) { int maxlatency; int thread_id; HANDLE input_file; DWORD file_size; /*@@@ fixme 64-bit */ if (decoder_ == 0) return 1; input_file = CreateFile(fn, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if(input_file == INVALID_HANDLE_VALUE) return -1; file_size = GetFileSize(input_file, NULL); CloseHandle(input_file); file_info_.abort_flag = false; file_info_.has_replaygain = false; if (!safe_decoder_init_(fn, decoder_)) return 1; cfg = flac_cfg.output; strcpy(lastfn_, fn); wide_samples_in_reservoir_ = 0; file_info_.output_bits_per_sample = file_info_.has_replaygain && cfg.replaygain.enable ? cfg.resolution.replaygain.bps_out : cfg.resolution.normal.dither_24_to_16 ? min(file_info_.bits_per_sample, 16) : file_info_.bits_per_sample; if (file_info_.has_replaygain && cfg.replaygain.enable && cfg.resolution.replaygain.dither) FLAC__replaygain_synthesis__init_dither_context(&file_info_.dither_context, file_info_.bits_per_sample, cfg.resolution.replaygain.noise_shaping); maxlatency = mod_.outMod->Open(file_info_.sample_rate, file_info_.channels, file_info_.output_bits_per_sample, -1, -1); if (maxlatency < 0) /* error opening device */ return 1; /* dividing by 1000 for the first parameter of setinfo makes it */ /* display 'H'... for hundred.. i.e. 14H Kbps. */ mod_.SetInfo((int)(file_size/(125.*file_info_.total_samples/file_info_.sample_rate)), file_info_.sample_rate/1000, file_info_.channels, 1); /* initialize vis stuff */ mod_.SAVSAInit(maxlatency, file_info_.sample_rate); mod_.VSASetInfo(file_info_.sample_rate, file_info_.channels); /* set the output plug-ins default volume */ mod_.outMod->SetVolume(-666); file_info_.paused = 0; file_info_.seek_to = -1; decode_pos_ms_ = 0; killDecodeThread = 0; thread_handle = CreateThread(NULL, 0, DecodeThread, NULL, 0, &thread_id); if (!thread_handle) return 1; return 0; } void pause() { file_info_.paused = 1; mod_.outMod->Pause(1); } void unpause() { file_info_.paused = 0; mod_.outMod->Pause(0); } int ispaused() { return file_info_.paused; } void stop() { if (thread_handle) { killDecodeThread = 1; if(WaitForSingleObject(thread_handle, 2000) == WAIT_TIMEOUT) { show_error("Error while stopping decoding thread."); TerminateThread(thread_handle, 0); } CloseHandle(thread_handle); thread_handle = NULL; } safe_decoder_finish_(decoder_); mod_.outMod->Close(); mod_.SAVSADeInit(); } int getlength() { return (int)file_info_.length_in_msec; } int getoutputtime() { return decode_pos_ms_ + (mod_.outMod->GetOutputTime() - mod_.outMod->GetWrittenTime()); } void setoutputtime(int time_in_ms) { file_info_.seek_to = time_in_ms; } void setvolume(int volume) { mod_.outMod->SetVolume(volume); } void setpan(int pan) { mod_.outMod->SetPan(pan); } int infoDlg(char *fn, HWND hwnd) { DoInfoBox(mod_.hDllInstance, hwnd, fn); return 0; } void getfileinfo(char *filename, char *title, int *length_in_msec) { FLAC__StreamMetadata streaminfo; if (!filename || !*filename) { filename = lastfn_; if (length_in_msec) { *length_in_msec = getlength(); length_in_msec = 0; /* force skip in following code */ } } if (!FLAC__metadata_get_streaminfo(filename, &streaminfo)) { if (title) sprintf(title, "Invalid FLAC: %s", filename); if (length_in_msec) *length_in_msec = -1; return; } if (title) get_description_(filename, title, 400); if (length_in_msec) *length_in_msec = (int)(streaminfo.data.stream_info.total_samples * 10 / (streaminfo.data.stream_info.sample_rate / 100)); } void eq_set(int on, char data[10], int preamp) {} static void do_vis(char *data, int nch, int resolution, int position, unsigned samples) { static char vis_buffer[SAMPLES_PER_WRITE * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS]; char *ptr; int size, count; /* * Winamp visuals may have problems accepting sample sizes larger than * 16 bits, so we reduce the sample size here if necessary. */ switch(resolution) { case 32: case 24: size = resolution / 8; count = samples * nch; data += size - 1; ptr = vis_buffer; while(count--) { *ptr++ = data[0] ^ 0x80; data += size; } data = vis_buffer; resolution = 8; /* fall through */ case 16: case 8: default: mod_.SAAddPCMData(data, nch, resolution, position); mod_.VSAAddPCMData(data, nch, resolution, position); } } static DWORD WINAPI DecodeThread(void *unused) { int done = 0; (void)unused; while(!killDecodeThread) { const unsigned channels = file_info_.channels; const unsigned bits_per_sample = file_info_.bits_per_sample; const unsigned target_bps = file_info_.output_bits_per_sample; const unsigned sample_rate = file_info_.sample_rate; if(file_info_.seek_to != -1) { const double distance = (double)file_info_.seek_to / (double)getlength(); const unsigned target_sample = (unsigned)(distance * (double)file_info_.total_samples); if(FLAC__file_decoder_seek_absolute(decoder_, (FLAC__uint64)target_sample)) { decode_pos_ms_ = (int)(distance * (double)getlength()); file_info_.seek_to = -1; done = 0; mod_.outMod->Flush(decode_pos_ms_); } } if(done) { if(!mod_.outMod->IsPlaying()) { PostMessage(mod_.hMainWindow, WM_WA_MPEG_EOF, 0, 0); return 0; } Sleep(10); } else if(mod_.outMod->CanWrite() >= ((int)(SAMPLES_PER_WRITE*channels*((target_bps+7)/8)) << (mod_.dsp_isactive()?1:0))) { while(wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) { if(FLAC__file_decoder_get_state(decoder_) == FLAC__FILE_DECODER_END_OF_FILE) { done = 1; break; } else if(!FLAC__file_decoder_process_single(decoder_)) { show_error("Error while processing frame (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder_)]); done = 1; break; } } if(wide_samples_in_reservoir_ == 0) { done = 1; } else { const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE); int bytes; unsigned i; if(cfg.replaygain.enable && file_info_.has_replaygain) { bytes = (int)FLAC__replaygain_synthesis__apply_gain( sample_buffer_, true, /* little_endian_data_out */ target_bps == 8, /* unsigned_data_out */ reservoir__, n, channels, bits_per_sample, target_bps, file_info_.replay_scale, cfg.replaygain.hard_limit, cfg.resolution.replaygain.dither, &file_info_.dither_context ); } else { bytes = (int)FLAC__plugin_common__pack_pcm_signed_little_endian( sample_buffer_, reservoir__, n, channels, bits_per_sample, target_bps ); } for (i = 0; i < channels; i++) memmove(&reservoir_[i][0], &reservoir_[i][n], sizeof(reservoir_[0][0]) * (wide_samples_in_reservoir_ - n)); wide_samples_in_reservoir_ -= n; do_vis(sample_buffer_, channels, target_bps, decode_pos_ms_, n); decode_pos_ms_ += (n*1000 + sample_rate/2)/sample_rate; if(mod_.dsp_isactive()) bytes = mod_.dsp_dosamples((short *)sample_buffer_, n, target_bps, channels, sample_rate) * (channels*target_bps/8); mod_.outMod->Write(sample_buffer_, bytes); } } else Sleep(20); } return 0; } In_Module mod_ = { IN_VER, "FLAC Reference Player v" VERSION, 0, /* hMainWindow */ 0, /* hDllInstance */ "FLAC\0FLAC Audio File (*.FLAC)\0" , 1, /* is_seekable */ 1, /* uses output */ config, about, init, quit, getfileinfo, infoDlg, isourfile, play, pause, unpause, ispaused, stop, getlength, getoutputtime, setoutputtime, setvolume, setpan, 0,0,0,0,0,0,0,0,0, /* vis stuff */ 0,0, /* dsp */ eq_set, NULL, /* setinfo */ 0 /* out_mod */ }; __declspec(dllexport) In_Module *winampGetInModule2() { return &mod_; } BOOL WINAPI _DllMainCRTStartup(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved) { return TRUE; } /*********************************************************************** * local routines **********************************************************************/ FLAC__bool safe_decoder_init_(const char *filename, FLAC__FileDecoder *decoder) { FLAC__ASSERT(0 != decoder); safe_decoder_finish_(decoder); FLAC__file_decoder_set_md5_checking(decoder, false); FLAC__file_decoder_set_filename(decoder, filename); FLAC__file_decoder_set_metadata_ignore_all(decoder); FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO); FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT); FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_); FLAC__file_decoder_set_write_callback(decoder, write_callback_); FLAC__file_decoder_set_error_callback(decoder, error_callback_); FLAC__file_decoder_set_client_data(decoder, &file_info_); if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK) { show_error("Error while initializing decoder (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)]); return false; } if(!FLAC__file_decoder_process_until_end_of_metadata(decoder)) { show_error("Error while processing metadata (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)]); return false; } if (file_info_.abort_flag) return false; /* metadata callback already popped up the error dialog */ return true; } void safe_decoder_finish_(FLAC__FileDecoder *decoder) { if(decoder && FLAC__file_decoder_get_state(decoder) != FLAC__FILE_DECODER_UNINITIALIZED) FLAC__file_decoder_finish(decoder); } void safe_decoder_delete_(FLAC__FileDecoder *decoder) { if(decoder) { safe_decoder_finish_(decoder); FLAC__file_decoder_delete(decoder); } } FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) { file_info_struct *file_info = (file_info_struct *)client_data; const unsigned channels = file_info->channels, wide_samples = frame->header.blocksize; unsigned channel; (void)decoder; if(file_info->abort_flag) return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; for(channel = 0; channel < channels; channel++) memcpy(&reservoir_[channel][wide_samples_in_reservoir_], buffer[channel], sizeof(buffer[0][0]) * wide_samples); wide_samples_in_reservoir_ += wide_samples; return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; } void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) { file_info_struct *file_info = (file_info_struct *)client_data; (void)decoder; if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) { FLAC__ASSERT(metadata->data.stream_info.total_samples < 0x100000000); /* this plugin can only handle < 4 gigasamples */ file_info->total_samples = (unsigned)(metadata->data.stream_info.total_samples&0xfffffffful); file_info->bits_per_sample = metadata->data.stream_info.bits_per_sample; file_info->channels = metadata->data.stream_info.channels; file_info->sample_rate = metadata->data.stream_info.sample_rate; if(file_info->bits_per_sample!=8 && file_info->bits_per_sample!=16 && file_info->bits_per_sample!=24) { show_error("This plugin can only handle 8/16/24-bit samples."); file_info->abort_flag = true; return; } file_info->length_in_msec = file_info->total_samples * 10 / (file_info->sample_rate / 100); } else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { double gain, peak; if(grabbag__replaygain_load_from_vorbiscomment(metadata, cfg.replaygain.album_mode, &gain, &peak)) { file_info_.has_replaygain = true; file_info_.replay_scale = grabbag__replaygain_compute_scale_factor(peak, gain, (double)cfg.replaygain.preamp, !cfg.replaygain.hard_limit); } } } void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) { file_info_struct *file_info = (file_info_struct*)client_data; (void)decoder; if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) file_info->abort_flag = true; } /* * title formatting */ typedef struct { FLAC_Plugin__CanonicalTag t; const char *filename; } tag_param_t; static __inline char *GetFileName(const char *fullname) { const char *c = fullname + strlen(fullname) - 1; while (c > fullname) { if (*c=='\\' || *c=='/') { c++; break; } c--; } return (char*)c; } static const T_CHAR *get_tag(const T_CHAR *tag, void *param) { tag_param_t *p = (tag_param_t*)param; if (!stricmp(tag, "path") || !stricmp(tag, "filepath") || !stricmp(tag, "url")) return p->filename; else if (!stricmp(tag, "filename")) { static char foo[MAX_PATH]; char *c; strcpy(foo, GetFileName(p->filename)); if (c = strrchr(foo, '.')) *c = 0; return foo; } else if (!stricmp(tag, "title")) return p->t.title; else if (!stricmp(tag, "artist")) return p->t.performer ? p->t.performer : p->t.composer; else if (!stricmp(tag, "composer")) return p->t.composer; else if (!stricmp(tag, "performer")) return p->t.performer; else if (!stricmp(tag, "album")) return p->t.album; else if (!stricmp(tag, "year") || !stricmp(tag, "date")) return p->t.year_recorded ? p->t.year_recorded : p->t.year_performed; else if (!stricmp(tag, "year_recorded")) return p->t.year_recorded; else if (!stricmp(tag, "year_performed")) return p->t.year_performed; else if (!stricmp(tag, "track_number")) return p->t.track_number; else if (!stricmp(tag, "tracks_in_album")) return p->t.tracks_in_album; else if (!stricmp(tag, "genre")) return p->t.genre; else if (!stricmp(tag, "comment") || !stricmp(tag, "description")) return p->t.comment; else return NULL; } void get_description_(const char *filename, char *description, unsigned max_size) { tag_param_t param; FLAC_plugin__canonical_tag_init(¶m.t); FLAC_plugin__canonical_tag_get_combined(filename, ¶m.t); param.filename = filename; tagz_format(flac_cfg.title.tag_format, get_tag, NULL, ¶m, description, max_size); FLAC_plugin__canonical_tag_clear(¶m.t); }