SIDPlayer/src/cl_amp.cpp

/*
 *  cl_amp.cpp - SIDPlayer CL-Amp plugin
 *
 *  SIDPlayer (C) Copyright 1996-2000 Christian Bauer
 *
 *  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 "sys.h"

#include <AppKit.h>
#include <support/UTF8.h>
#include <stdio.h>

#include "prefs.h"
#include "main.h"
#include "psid.h"
#include "sid.h"
#include "prefs_window.h"

#include "InputPlugin.h"

class SIDPlugin;


// Size of audio buffer
const int AUDIO_BUFFER_SIZE = 4096;

// URL header for subsong recognition
static const char MY_URL_HEADER[] = "sid://";
const int MY_URL_HEADER_LEN = 6;


// Plugin class definition
class SIDPlugin : public InputPlugin {
public:
        SIDPlugin();
        virtual ~SIDPlugin();

        void Init();
        void Cleanup();

        // Thread A
        bool About(bool Question);
        bool Prefs(bool Question);
        bool Edit(const char *FileName, bool Question);
        bool GetMimeType(BMimeType *m, int nr);
        bool IsOur(const char *FileName);
        bool GetSongInfo(const char *FName, PlayerInfoStruct *Info);
        void AbortPlaying();
        void Pause(bool On);
        void NewSpeed(long Promille);
        void NewVolume(long Promille);

        // Thread B
        bool InitPlaying(const char *FileName, PlayerInfoStruct *Info);
        int GetAudio(char **Buff, int Size);
        void JumpTo(long NewTime);
        void CleanupPlaying();

private:
        uint8 buffer[AUDIO_BUFFER_SIZE];        // Audio data buffer
        PrefsWindow *prefs_window;                      // Pointer to prefs window
};


/*
 *  CL-Amp plugin interface
 */

extern "C" _EXPORT InputPlugin *NewPlugin(int *version);

InputPlugin *NewPlugin(int *version)
{
        *version = CURRENT_INPUT_PLUGIN_VERSION;
        return new SIDPlugin();
}


/*
 *  Constructor
 */

SIDPlugin::SIDPlugin() : InputPlugin("PSID", "SIDPlayer C64 SID tune player by Christian Bauer")
{
        prefs_window = NULL;
}


/*
 *  Destructor
 */

SIDPlugin::~SIDPlugin()
{
}


/*
 *  Init/cleanup
 */

void SIDPlugin::Init()
{
        InitAll();
}

void SIDPlugin::Cleanup()
{
        if (prefs_window_open && prefs_window) {
                prefs_window->PostMessage(B_QUIT_REQUESTED);
                while (prefs_window_open)
                        snooze(1000);
        }
        ExitAll();
}


/*
 *  About window
 */

bool SIDPlugin::About(bool Question)
{
        if (Question)
                return true;

        AboutWindow();
        return true;
}


/*
 *  Prefs window
 */

bool SIDPlugin::Prefs(bool Question)
{
        if (Question)
                return true;

        if (prefs_window_open && prefs_window) {
                prefs_window->Activate(true);
                return false;
        } else {
                prefs_window = new PrefsWindow();
                return true;
        }
}


/*
 *  Edit window
 */

bool SIDPlugin::Edit(const char *FileName, bool Question)
{
        return false;
}


/*
 *  Get MIME type for supported audio files
 */

bool SIDPlugin::GetMimeType(BMimeType *m, int nr)
{
        if (nr == 0) {
                m->SetTo("audio/x-psid");
                m->SetLongDescription("C64 SID tune");
                return true;
        } else
                return false;
}


/*
 *  Check if file is handled by this plugin
 */

bool SIDPlugin::IsOur(const char *FileName)
{
        if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {

                // name starts with "sid://", extract file name
                char name[B_FILE_NAME_LENGTH];
                char *q = strrchr(FileName, '?');
                if (q == NULL)
                        return false;
                int name_len = q - (FileName + MY_URL_HEADER_LEN);
                strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
                name[name_len] = 0;
                return IsPSIDFile(name);

        } else
                return IsPSIDFile(FileName);
}


/*
 *  Get information about audio file
 */

static bool get_song_info(const char *file_name, PlayerInfoStruct *Info, int &number_of_songs, int &song, bool default_song = true)
{
        // Load header
        uint8 header[PSID_MAX_HEADER_LENGTH];
        if (!LoadPSIDHeader(file_name, header))
                return false;

        // Get number of subsongs and default song
        number_of_songs = read_psid_16(header, PSID_NUMBER);
        if (number_of_songs == 0)
                number_of_songs = 1;
        if (default_song) {
                song = read_psid_16(header, PSID_DEFSONG);
                if (song)
                        song--;
        }
        if (song >= number_of_songs)
                song = 0;

        // Set info
        char psid_name[64];
        int32 sl = 32, dl = 64, state = 0;
        convert_to_utf8(B_ISO1_CONVERSION, (char *)(header + PSID_NAME), &sl, psid_name, &dl, &state);
        if (number_of_songs > 1) {
                sprintf(Info->Title, "%s (%d/%d)", psid_name, song + 1, number_of_songs);
        } else
                strcpy(Info->Title, psid_name);
        Info->Flags = INPLUG_NO_TOTTIME | INPLUG_NO_CURRTIME | INPLUG_HANDLE_SPEED;
        Info->Frequency = 44100;
        Info->Stereo = true;
        return true;
}

bool SIDPlugin::GetSongInfo(const char *FileName, PlayerInfoStruct *Info)
{
        char name[B_FILE_NAME_LENGTH + 16];
        if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {

                // name starts with "sid://", extract file name
                char *q = strrchr(FileName, '?');
                if (q == NULL)
                        return false;
                int song = atoi(q + 1);
                int name_len = q - (FileName + MY_URL_HEADER_LEN);
                strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
                name[name_len] = 0;

                // Get info
                int number_of_songs;
                return get_song_info(name, Info, number_of_songs, song, false);

        } else {

                // Ordinary file name, get info and number of subsongs
                int number_of_songs, default_song;
                if (!get_song_info(FileName, Info, number_of_songs, default_song))
                        return false;

                // Add subsongs other than default song to playlist in the correct order
                for (int i=0; i<number_of_songs; i++) {
                        if (i != default_song) {
                                sprintf(name, "%s%s?%d", MY_URL_HEADER, FileName, i);
                                if (i < default_song)
                                        SendToCLAmp_AddFile(name, Info->SongId);
                                else
                                        SendToCLAmp_AddFile(name);
                        }
                }
        }
        return true;
}


/*
 *  Special handling for aborting playing
 */

void SIDPlugin::AbortPlaying()
{
}


/*
 *  Special handling for pause
 */

void SIDPlugin::Pause(bool On)
{
}


/*
 *  Adjust playback speed
 */

void SIDPlugin::NewSpeed(long Promille)
{
        SIDAdjustSpeed(Promille / 10);
}


/*
 *  Adjust playback volume
 */

void SIDPlugin::NewVolume(long Promille)
{
}


/*
 *  Prepare for playback
 */

bool SIDPlugin::InitPlaying(const char *FileName, PlayerInfoStruct *Info)
{
        char name[B_FILE_NAME_LENGTH];
        bool subsong_given = false;
        int song;

        if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {

                // name starts with "sid://", extract file name
                char *q = strrchr(FileName, '?');
                if (q == NULL)
                        return false;
                subsong_given = true;
                song = atoi(q + 1);
                int name_len = q - (FileName + MY_URL_HEADER_LEN);
                strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
                name[name_len] = 0;

        } else
                strcpy(name, FileName);

        // Load PSID file
        if (!LoadPSIDFile(name))
                return false;

        // Select subsong if subsong number given
        if (subsong_given)
                SelectSong(song);

        // Set data
        Info->Flags = INPLUG_NO_TOTTIME | INPLUG_NO_CURRTIME | INPLUG_HANDLE_SPEED;
        Info->Frequency = 44100;
        Info->Stereo = true;
        return true;
}


/*
 *  Audio stream callback function
 */

int SIDPlugin::GetAudio(char **Buff, int Size)
{
        SIDCalcBuffer(buffer, AUDIO_BUFFER_SIZE);
        *Buff = (char *)buffer;
        return AUDIO_BUFFER_SIZE;
}


/*
 *  Set playback position
 */

void SIDPlugin::JumpTo(long NewTime)
{
}


/*
 *  Stop playback
 */

void SIDPlugin::CleanupPlaying()
{
}
Revision:	1.1
Committed:	2000-07-28T12:42:30Z (24 years, 3 months ago) by cebix
Branch:	MAIN
Branch point for:	cebix
Log Message:	Initial revision
#	User	Rev	Content
1	cebix	1.1	/*
2			* cl_amp.cpp - SIDPlayer CL-Amp plugin
3			*
4			* SIDPlayer (C) Copyright 1996-2000 Christian Bauer
5			*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			#include "sys.h"
22
23			#include <AppKit.h>
24			#include <support/UTF8.h>
25			#include <stdio.h>
26
27			#include "prefs.h"
28			#include "main.h"
29			#include "psid.h"
30			#include "sid.h"
31			#include "prefs_window.h"
32
33			#include "InputPlugin.h"
34
35			class SIDPlugin;
36
37
38			// Size of audio buffer
39			const int AUDIO_BUFFER_SIZE = 4096;
40
41			// URL header for subsong recognition
42			static const char MY_URL_HEADER[] = "sid://";
43			const int MY_URL_HEADER_LEN = 6;
44
45
46			// Plugin class definition
47			class SIDPlugin : public InputPlugin {
48			public:
49			SIDPlugin();
50			virtual ~SIDPlugin();
51
52			void Init();
53			void Cleanup();
54
55			// Thread A
56			bool About(bool Question);
57			bool Prefs(bool Question);
58			bool Edit(const char *FileName, bool Question);
59			bool GetMimeType(BMimeType *m, int nr);
60			bool IsOur(const char *FileName);
61			bool GetSongInfo(const char FName, PlayerInfoStruct Info);
62			void AbortPlaying();
63			void Pause(bool On);
64			void NewSpeed(long Promille);
65			void NewVolume(long Promille);
66
67			// Thread B
68			bool InitPlaying(const char FileName, PlayerInfoStruct Info);
69			int GetAudio(char **Buff, int Size);
70			void JumpTo(long NewTime);
71			void CleanupPlaying();
72
73			private:
74			uint8 buffer[AUDIO_BUFFER_SIZE]; // Audio data buffer
75			PrefsWindow *prefs_window; // Pointer to prefs window
76			};
77
78
79			/*
80			* CL-Amp plugin interface
81			*/
82
83			extern "C" _EXPORT InputPlugin NewPlugin(int version);
84
85			InputPlugin NewPlugin(int version)
86			{
87			*version = CURRENT_INPUT_PLUGIN_VERSION;
88			return new SIDPlugin();
89			}
90
91
92			/*
93			* Constructor
94			*/
95
96			SIDPlugin::SIDPlugin() : InputPlugin("PSID", "SIDPlayer C64 SID tune player by Christian Bauer")
97			{
98			prefs_window = NULL;
99			}
100
101
102			/*
103			* Destructor
104			*/
105
106			SIDPlugin::~SIDPlugin()
107			{
108			}
109
110
111			/*
112			* Init/cleanup
113			*/
114
115			void SIDPlugin::Init()
116			{
117			InitAll();
118			}
119
120			void SIDPlugin::Cleanup()
121			{
122			if (prefs_window_open && prefs_window) {
123			prefs_window->PostMessage(B_QUIT_REQUESTED);
124			while (prefs_window_open)
125			snooze(1000);
126			}
127			ExitAll();
128			}
129
130
131			/*
132			* About window
133			*/
134
135			bool SIDPlugin::About(bool Question)
136			{
137			if (Question)
138			return true;
139
140			AboutWindow();
141			return true;
142			}
143
144
145			/*
146			* Prefs window
147			*/
148
149			bool SIDPlugin::Prefs(bool Question)
150			{
151			if (Question)
152			return true;
153
154			if (prefs_window_open && prefs_window) {
155			prefs_window->Activate(true);
156			return false;
157			} else {
158			prefs_window = new PrefsWindow();
159			return true;
160			}
161			}
162
163
164			/*
165			* Edit window
166			*/
167
168			bool SIDPlugin::Edit(const char *FileName, bool Question)
169			{
170			return false;
171			}
172
173
174			/*
175			* Get MIME type for supported audio files
176			*/
177
178			bool SIDPlugin::GetMimeType(BMimeType *m, int nr)
179			{
180			if (nr == 0) {
181			m->SetTo("audio/x-psid");
182			m->SetLongDescription("C64 SID tune");
183			return true;
184			} else
185			return false;
186			}
187
188
189			/*
190			* Check if file is handled by this plugin
191			*/
192
193			bool SIDPlugin::IsOur(const char *FileName)
194			{
195			if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {
196
197			// name starts with "sid://", extract file name
198			char name[B_FILE_NAME_LENGTH];
199			char *q = strrchr(FileName, '?');
200			if (q == NULL)
201			return false;
202			int name_len = q - (FileName + MY_URL_HEADER_LEN);
203			strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
204			name[name_len] = 0;
205			return IsPSIDFile(name);
206
207			} else
208			return IsPSIDFile(FileName);
209			}
210
211
212			/*
213			* Get information about audio file
214			*/
215
216			static bool get_song_info(const char file_name, PlayerInfoStruct Info, int &number_of_songs, int &song, bool default_song = true)
217			{
218			// Load header
219			uint8 header[PSID_MAX_HEADER_LENGTH];
220			if (!LoadPSIDHeader(file_name, header))
221			return false;
222
223			// Get number of subsongs and default song
224			number_of_songs = read_psid_16(header, PSID_NUMBER);
225			if (number_of_songs == 0)
226			number_of_songs = 1;
227			if (default_song) {
228			song = read_psid_16(header, PSID_DEFSONG);
229			if (song)
230			song--;
231			}
232			if (song >= number_of_songs)
233			song = 0;
234
235			// Set info
236			char psid_name[64];
237			int32 sl = 32, dl = 64, state = 0;
238			convert_to_utf8(B_ISO1_CONVERSION, (char *)(header + PSID_NAME), &sl, psid_name, &dl, &state);
239			if (number_of_songs > 1) {
240			sprintf(Info->Title, "%s (%d/%d)", psid_name, song + 1, number_of_songs);
241			} else
242			strcpy(Info->Title, psid_name);
243			Info->Flags = INPLUG_NO_TOTTIME \| INPLUG_NO_CURRTIME \| INPLUG_HANDLE_SPEED;
244			Info->Frequency = 44100;
245			Info->Stereo = true;
246			return true;
247			}
248
249			bool SIDPlugin::GetSongInfo(const char FileName, PlayerInfoStruct Info)
250			{
251			char name[B_FILE_NAME_LENGTH + 16];
252			if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {
253
254			// name starts with "sid://", extract file name
255			char *q = strrchr(FileName, '?');
256			if (q == NULL)
257			return false;
258			int song = atoi(q + 1);
259			int name_len = q - (FileName + MY_URL_HEADER_LEN);
260			strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
261			name[name_len] = 0;
262
263			// Get info
264			int number_of_songs;
265			return get_song_info(name, Info, number_of_songs, song, false);
266
267			} else {
268
269			// Ordinary file name, get info and number of subsongs
270			int number_of_songs, default_song;
271			if (!get_song_info(FileName, Info, number_of_songs, default_song))
272			return false;
273
274			// Add subsongs other than default song to playlist in the correct order
275			for (int i=0; i<number_of_songs; i++) {
276			if (i != default_song) {
277			sprintf(name, "%s%s?%d", MY_URL_HEADER, FileName, i);
278			if (i < default_song)
279			SendToCLAmp_AddFile(name, Info->SongId);
280			else
281			SendToCLAmp_AddFile(name);
282			}
283			}
284			}
285			return true;
286			}
287
288
289			/*
290			* Special handling for aborting playing
291			*/
292
293			void SIDPlugin::AbortPlaying()
294			{
295			}
296
297
298			/*
299			* Special handling for pause
300			*/
301
302			void SIDPlugin::Pause(bool On)
303			{
304			}
305
306
307			/*
308			* Adjust playback speed
309			*/
310
311			void SIDPlugin::NewSpeed(long Promille)
312			{
313			SIDAdjustSpeed(Promille / 10);
314			}
315
316
317			/*
318			* Adjust playback volume
319			*/
320
321			void SIDPlugin::NewVolume(long Promille)
322			{
323			}
324
325
326			/*
327			* Prepare for playback
328			*/
329
330			bool SIDPlugin::InitPlaying(const char FileName, PlayerInfoStruct Info)
331			{
332			char name[B_FILE_NAME_LENGTH];
333			bool subsong_given = false;
334			int song;
335
336			if (strncasecmp(FileName, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {
337
338			// name starts with "sid://", extract file name
339			char *q = strrchr(FileName, '?');
340			if (q == NULL)
341			return false;
342			subsong_given = true;
343			song = atoi(q + 1);
344			int name_len = q - (FileName + MY_URL_HEADER_LEN);
345			strncpy(name, FileName + MY_URL_HEADER_LEN, name_len);
346			name[name_len] = 0;
347
348			} else
349			strcpy(name, FileName);
350
351			// Load PSID file
352			if (!LoadPSIDFile(name))
353			return false;
354
355			// Select subsong if subsong number given
356			if (subsong_given)
357			SelectSong(song);
358
359			// Set data
360			Info->Flags = INPLUG_NO_TOTTIME \| INPLUG_NO_CURRTIME \| INPLUG_HANDLE_SPEED;
361			Info->Frequency = 44100;
362			Info->Stereo = true;
363			return true;
364			}
365
366
367			/*
368			* Audio stream callback function
369			*/
370
371			int SIDPlugin::GetAudio(char **Buff, int Size)
372			{
373			SIDCalcBuffer(buffer, AUDIO_BUFFER_SIZE);
374			Buff = (char )buffer;
375			return AUDIO_BUFFER_SIZE;
376			}
377
378
379			/*
380			* Set playback position
381			*/
382
383			void SIDPlugin::JumpTo(long NewTime)
384			{
385			}
386
387
388			/*
389			* Stop playback
390			*/
391
392			void SIDPlugin::CleanupPlaying()
393			{
394			}