XMMS Input plugin support

based on patches by Balatoni Denes <pnis@coder.hu>
changes by me: glib dependency removed, files merged, code simplified, some bugfixes


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8529 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 155 insertions, 0 deletions

diff --git a/libmpdemux/demux_xmms_plugin.h b/libmpdemux/demux_xmms_plugin.h
new file mode 100644
index 0000000000..dd3e7938e5
--- /dev/null
+++ b/libmpdemux/demux_xmms_plugin.h
@@ -0,0 +1,155 @@
+/*  XMMS - Cross-platform multimedia player
+ *  Copyright (C) 1998-2000  Peter Alm, Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer. 2.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef PLUGIN_H
+#define PLUGIN_H
+
+typedef enum
+{
+	FMT_U8, FMT_S8, FMT_U16_LE, FMT_U16_BE, FMT_U16_NE, FMT_S16_LE, FMT_S16_BE, FMT_S16_NE
+}
+AFormat;
+
+typedef struct
+{
+	void *handle;		/* Filled in by xmms */
+	char *filename;		/* Filled in by xmms */
+	char *description;	/* The description that is shown in the preferences box */
+	void (*init) (void);
+	void (*about) (void);	/* Show the about box */
+	void (*configure) (void);	/* Show the configuration dialog */
+	void (*get_volume) (int *l, int *r);
+	void (*set_volume) (int l, int r);	/* Set the volume */
+	int (*open_audio) (AFormat fmt, int rate, int nch);	/* Open the device, if the device can't handle the given 
+								   parameters the plugin is responsible for downmixing
+								   the data to the right format before outputting it */
+	void (*write_audio) (void *ptr, int length);	/* The input plugin calls this to write data to the output 
+							   buffer */
+	void (*close_audio) (void);	/* No comment... */
+	void (*flush) (int time);	/* Flush the buffer and set the plugins internal timers to time */
+	void (*pause) (short paused);	/* Pause or unpause the output */
+	int (*buffer_free) (void);	/* Return the amount of data that can be written to the buffer,
+					   two calls to this without a call to write_audio should make
+					   the plugin output audio directly */
+	int (*buffer_playing) (void);	/* Returns TRUE if the plugin currently is playing some audio,
+					   otherwise return FALSE */
+	int (*output_time) (void);	/* Return the current playing time */
+	int (*written_time) (void);	/* Return the length of all the data that has been written to
+					   the buffer */
+}
+OutputPlugin;
+
+typedef struct
+{
+	void *handle;		/* Filled in by xmms */
+	char *filename;		/* Filled in by xmms */
+	char *description;	/* The description that is shown in the preferences box */
+	void (*init) (void);	/* Called when the plugin is loaded */
+	void (*cleanup) (void);	/* Called when the plugin is unloaded */
+	void (*about) (void);	/* Show the about box */
+	void (*configure) (void);	/* Show the configure box */
+	int (*mod_samples) (void *data, int length, AFormat fmt, int srate, int nch);	/* Modify samples */
+	void (*query_format) (AFormat *fmt,int *rate, int *nch);
+}
+EffectPlugin;
+
+typedef enum
+{
+	INPUT_VIS_ANALYZER, INPUT_VIS_SCOPE, INPUT_VIS_VU, INPUT_VIS_OFF
+}
+InputVisType;
+
+typedef struct
+{
+	void *handle;		/* Filled in by xmms */
+	char *filename;		/* Filled in by xmms */
+	char *description;	/* The description that is shown in the preferences box */
+	void (*init) (void);	/* Called when the plugin is loaded */
+	void (*about) (void);	/* Show the about box */
+	void (*configure) (void);
+	int (*is_our_file) (char *filename);	/* Return 1 if the plugin can handle the file */
+	void *(*scan_dir) (char *dirname);	/* Look in Input/cdaudio/cdaudio.c to see how */
+	/* to use this */
+	void (*play_file) (char *filename);	/* Guess what... */
+	void (*stop) (void);	/* Tricky one */
+	void (*pause) (short paused);	/* Pause or unpause */
+	void (*seek) (int time);	/* Seek to the specified time */
+	void (*set_eq) (int on, float preamp, float *bands);	/* Set the equalizer, most plugins won't be able to do this */
+	int (*get_time) (void);	/* Get the time, usually returns the output plugins output time */
+	void (*get_volume) (int *l, int *r);	/* Input-plugin specific volume functions, just provide a NULL if */
+	void (*set_volume) (int l, int r);	/*  you want the output plugin to handle it */
+	void (*cleanup) (void);			/* Called when xmms exit */
+	InputVisType (*get_vis_type) (void); /* OBSOLETE, DO NOT USE! */
+	void (*add_vis_pcm) (int time, AFormat fmt, int nch, int length, void *ptr); /* Send data to the visualization plugins 
+											Preferably 512 samples/block */
+	void (*set_info) (char *title, int length, int rate, int freq, int nch);	/* Fill in the stuff that is shown in the player window
+											   set length to -1 if it's unknown. Filled in by xmms */
+	void (*set_info_text) (char *text);	/* Show some text in the song title box in the main window,
+						   call it with NULL as argument to reset it to the song title.
+						   Filled in by xmms */
+	void (*get_song_info) (char *filename, char **title, int *length);	/* Function to grab the title string */
+	void (*file_info_box) (char *filename);		/* Bring up an info window for the filename passed in */
+	OutputPlugin *output;	/* Handle to the current output plugin. Filled in by xmms */
+}
+InputPlugin;
+
+/* So that input plugins can get the title formatting information */
+char *xmms_get_gentitle_format(void);
+
+/* So that output plugins can communicate with effect plugins */
+EffectPlugin *get_current_effect_plugin(void);
+int effects_enabled(void);
+
+typedef struct
+{
+	void *handle;		/* Filled in by xmms */
+	char *filename;		/* Filled in by xmms */
+	int xmms_session;	/* The session ID for attaching to the control socket */
+	char *description;	/* The description that is shown in the preferences box */
+	void (*init) (void);	/* Called when the plugin is enabled */
+	void (*about) (void);	/* Show the about box */
+	void (*configure) (void);
+	void (*cleanup) (void);	/* Called when the plugin is disabled or when xmms exits */
+}
+GeneralPlugin;
+
+typedef struct _VisPlugin
+{
+	void *handle; 	/* Filled in by xmms */
+	char *filename; /* Filled in by xmms */
+	int xmms_session; /* The session ID for attaching to the control socket */
+	char *description; /* The description that is shown in the preferences box */
+	int num_pcm_chs_wanted; /* Numbers of PCM channels wanted in the call to render_pcm */
+	int num_freq_chs_wanted; /* Numbers of freq channels wanted in the call to render_freq */
+	void (*init)(void); /* Called when the plugin is enabled */
+	void (*cleanup)(void); /* Called when the plugin is disabled */
+	void (*about)(void); /* Show the about box */
+	void (*configure)(void); /* Show the configure box */
+	void (*disable_plugin)(struct _VisPlugin *); /* Call this with a pointer to your plugin to disable the plugin */
+	void (*playback_start)(void); /* Called when playback starts */
+	void (*playback_stop)(void); /* Called when playback stops */
+	void (*render_pcm)(short pcm_data[2][512]); /* Render the PCM data, don't do anything time consuming in here */
+	void (*render_freq)(short freq_data[2][256]); /* Render the freq data, don't do anything time consuming in here */
+} VisPlugin;
+
+#endif