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cebix |
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/* |
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* cl_amp.cpp - SIDPlayer CL-Amp plugin |
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* |
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cebix |
1.5 |
* SIDPlayer (C) Copyright 1996-2004 Christian Bauer |
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cebix |
1.1 |
* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include "sys.h" |
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#include <AppKit.h> |
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#include <support/UTF8.h> |
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#include <stdio.h> |
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#include "prefs.h" |
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#include "main.h" |
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#include "psid.h" |
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#include "sid.h" |
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#include "prefs_window.h" |
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#include "InputPlugin.h" |
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class SIDPlugin; |
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// Size of audio buffer |
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const int AUDIO_BUFFER_SIZE = 4096; |
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// URL header for subsong recognition |
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static const char MY_URL_HEADER[] = "sid://"; |
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const int MY_URL_HEADER_LEN = 6; |
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// Plugin class definition |
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class SIDPlugin : public InputPlugin { |
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public: |
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SIDPlugin(); |
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virtual ~SIDPlugin(); |
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void Init(); |
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void Cleanup(); |
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// Thread A |
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bool About(bool Question); |
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bool Prefs(bool Question); |
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bool Edit(const char *FileName, bool Question); |
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bool GetMimeType(BMimeType *m, int nr); |
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bool IsOur(const char *FileName); |
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bool GetSongInfo(const char *FName, PlayerInfoStruct *Info); |
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void AbortPlaying(); |
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void Pause(bool On); |
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void NewSpeed(long Promille); |
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void NewVolume(long Promille); |
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// Thread B |
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bool InitPlaying(const char *FileName, PlayerInfoStruct *Info); |
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int GetAudio(char **Buff, int Size); |
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void JumpTo(long NewTime); |
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void CleanupPlaying(); |
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private: |
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uint8 buffer[AUDIO_BUFFER_SIZE]; // Audio data buffer |
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PrefsWindow *prefs_window; // Pointer to prefs window |
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}; |
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/* |
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* CL-Amp plugin interface |
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*/ |
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extern "C" _EXPORT InputPlugin *NewPlugin(int *version); |
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InputPlugin *NewPlugin(int *version) |
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{ |
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*version = CURRENT_INPUT_PLUGIN_VERSION; |
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return new SIDPlugin(); |
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} |
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/* |
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* Constructor |
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*/ |
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SIDPlugin::SIDPlugin() : InputPlugin("PSID", "SIDPlayer C64 SID tune player by Christian Bauer") |
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{ |
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prefs_window = NULL; |
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} |
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/* |
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* Destructor |
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*/ |
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SIDPlugin::~SIDPlugin() |
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{ |
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} |
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/* |
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* Init/cleanup |
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*/ |
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void SIDPlugin::Init() |
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{ |
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int argc = 0; |
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char **argv = NULL; |
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InitAll(argc, argv); |
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} |
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void SIDPlugin::Cleanup() |
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{ |
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if (prefs_window_open && prefs_window) { |
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prefs_window->PostMessage(B_QUIT_REQUESTED); |
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while (prefs_window_open) |
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snooze(1000); |
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} |
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ExitAll(); |
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} |
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/* |
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* About window |
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*/ |
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bool SIDPlugin::About(bool Question) |
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{ |
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if (Question) |
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return true; |
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AboutWindow(); |
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return true; |
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} |
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/* |
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* Prefs window |
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*/ |
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bool SIDPlugin::Prefs(bool Question) |
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{ |
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if (Question) |
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return true; |
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if (prefs_window_open && prefs_window) { |
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prefs_window->Activate(true); |
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return false; |
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} else { |
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prefs_window = new PrefsWindow(); |
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return true; |
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} |
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} |
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/* |
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* Edit window |
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*/ |
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bool SIDPlugin::Edit(const char *FileName, bool Question) |
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{ |
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return false; |
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} |
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/* |
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* Get MIME type for supported audio files |
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*/ |
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bool SIDPlugin::GetMimeType(BMimeType *m, int nr) |
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{ |
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if (nr == 0) { |
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m->SetTo("audio/x-psid"); |
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m->SetLongDescription("C64 SID tune"); |
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return true; |
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} else |
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return false; |
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} |
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/* |
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* Check if file is handled by this plugin |
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*/ |
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bool SIDPlugin::IsOur(const char *FileName) |
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{ |
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if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) { |
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// name starts with "sid://", extract file name |
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char name[B_FILE_NAME_LENGTH]; |
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char *q = strrchr(FileName, '?'); |
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if (q == NULL) |
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return false; |
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int name_len = q - (FileName + MY_URL_HEADER_LEN); |
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strncpy(name, FileName + MY_URL_HEADER_LEN, name_len); |
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name[name_len] = 0; |
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return IsPSIDFile(name); |
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} else |
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return IsPSIDFile(FileName); |
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} |
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/* |
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* Get information about audio file |
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*/ |
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static bool get_song_info(const char *file_name, PlayerInfoStruct *Info, int &number_of_songs, int &song, bool default_song = true) |
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{ |
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// Load header |
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uint8 header[PSID_MAX_HEADER_LENGTH]; |
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if (!LoadPSIDHeader(file_name, header)) |
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return false; |
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// Get number of subsongs and default song |
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number_of_songs = read_psid_16(header, PSID_NUMBER); |
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if (number_of_songs == 0) |
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number_of_songs = 1; |
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if (default_song) { |
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song = read_psid_16(header, PSID_DEFSONG); |
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if (song) |
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song--; |
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} |
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if (song >= number_of_songs) |
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song = 0; |
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// Set info |
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char psid_name[64]; |
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int32 sl = 32, dl = 64, state = 0; |
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convert_to_utf8(B_ISO1_CONVERSION, (char *)(header + PSID_NAME), &sl, psid_name, &dl, &state); |
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if (number_of_songs > 1) { |
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sprintf(Info->Title, "%s (%d/%d)", psid_name, song + 1, number_of_songs); |
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} else |
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strcpy(Info->Title, psid_name); |
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Info->Flags = INPLUG_NO_TOTTIME | INPLUG_NO_CURRTIME | INPLUG_HANDLE_SPEED; |
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Info->Frequency = 44100; |
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Info->Stereo = true; |
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return true; |
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} |
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bool SIDPlugin::GetSongInfo(const char *FileName, PlayerInfoStruct *Info) |
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{ |
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char name[B_FILE_NAME_LENGTH + 16]; |
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if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) { |
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// name starts with "sid://", extract file name |
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char *q = strrchr(FileName, '?'); |
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if (q == NULL) |
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return false; |
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int song = atoi(q + 1); |
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int name_len = q - (FileName + MY_URL_HEADER_LEN); |
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strncpy(name, FileName + MY_URL_HEADER_LEN, name_len); |
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name[name_len] = 0; |
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// Get info |
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int number_of_songs; |
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return get_song_info(name, Info, number_of_songs, song, false); |
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} else { |
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// Ordinary file name, get info and number of subsongs |
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int number_of_songs, default_song; |
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if (!get_song_info(FileName, Info, number_of_songs, default_song)) |
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return false; |
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// Add subsongs other than default song to playlist in the correct order |
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for (int i=0; i<number_of_songs; i++) { |
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if (i != default_song) { |
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sprintf(name, "%s%s?%d", MY_URL_HEADER, FileName, i); |
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if (i < default_song) |
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SendToCLAmp_AddFile(name, Info->SongId); |
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else |
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SendToCLAmp_AddFile(name); |
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} |
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} |
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} |
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return true; |
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} |
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/* |
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* Special handling for aborting playing |
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*/ |
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void SIDPlugin::AbortPlaying() |
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{ |
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} |
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/* |
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* Special handling for pause |
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*/ |
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void SIDPlugin::Pause(bool On) |
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{ |
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} |
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/* |
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* Adjust playback speed |
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*/ |
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void SIDPlugin::NewSpeed(long Promille) |
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{ |
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SIDAdjustSpeed(Promille / 10); |
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} |
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/* |
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* Adjust playback volume |
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*/ |
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void SIDPlugin::NewVolume(long Promille) |
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{ |
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} |
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/* |
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* Prepare for playback |
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*/ |
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bool SIDPlugin::InitPlaying(const char *FileName, PlayerInfoStruct *Info) |
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{ |
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char name[B_FILE_NAME_LENGTH]; |
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bool subsong_given = false; |
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int song; |
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if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) { |
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// name starts with "sid://", extract file name |
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char *q = strrchr(FileName, '?'); |
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if (q == NULL) |
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return false; |
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subsong_given = true; |
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song = atoi(q + 1); |
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int name_len = q - (FileName + MY_URL_HEADER_LEN); |
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strncpy(name, FileName + MY_URL_HEADER_LEN, name_len); |
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name[name_len] = 0; |
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} else |
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strcpy(name, FileName); |
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// Load PSID file |
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if (!LoadPSIDFile(name)) |
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return false; |
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// Select subsong if subsong number given |
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if (subsong_given) |
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SelectSong(song); |
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// Set data |
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Info->Flags = INPLUG_NO_TOTTIME | INPLUG_NO_CURRTIME | INPLUG_HANDLE_SPEED; |
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Info->Frequency = 44100; |
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Info->Stereo = true; |
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return true; |
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} |
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/* |
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* Audio stream callback function |
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*/ |
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int SIDPlugin::GetAudio(char **Buff, int Size) |
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{ |
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SIDCalcBuffer(buffer, AUDIO_BUFFER_SIZE); |
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*Buff = (char *)buffer; |
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return AUDIO_BUFFER_SIZE; |
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} |
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/* |
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* Set playback position |
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*/ |
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void SIDPlugin::JumpTo(long NewTime) |
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{ |
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} |
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/* |
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* Stop playback |
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*/ |
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void SIDPlugin::CleanupPlaying() |
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{ |
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} |