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https://github.com/mpv-player/mpv
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d5462be87b
But please explain _why_ the 'volatile' attribute is needed with these variables and why is it supposed to protect them ? git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3336 b3059339-0415-0410-9bf9-f77b7e298cf2
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
#ifndef __audio_plugin_h__
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#define __audio_plugin_h__
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// Functions supplied by plugins
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typedef struct ao_plugin_functions_s
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{
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ao_info_t *info;
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int (*control)(int cmd,int arg);
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int (*init)();
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void (*uninit)();
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void (*reset)();
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int (*play)();
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} ao_plugin_functions_t;
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// Global data for all audio plugins
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typedef struct ao_plugin_data_s
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{
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void* data; /* current data block read only ok to change */
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int len; /* setup and current buffer length */
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int rate; /* setup data rate */
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int channels; /* setup number of channels */
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int format; /* setup format */
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double sz_mult; /* Buffer size multiplier */
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double sz_fix; /* Fix (as in static) extra buffer size */
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float delay_mult; /* Delay multiplier */
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float delay_fix; /* Fix delay */
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}ao_plugin_data_t;
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extern volatile ao_plugin_data_t ao_plugin_data;
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// Plugin confuguration data set by cmd-line parameters
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typedef struct ao_plugin_cfg_s
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{
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char* plugin_list; // List of used plugins read from cfg
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int pl_format_type; // Output format
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int pl_delay_len; // Number of samples to delay sound output
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} ao_plugin_cfg_t;
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extern volatile ao_plugin_cfg_t ao_plugin_cfg;
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// Configuration defaults
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#define CFG_DEFAULTS { \
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NULL, \
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AFMT_S16_LE, \
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0 \
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};
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// This block should not be available in the pl_xxxx files
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// due to compilation issues
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#ifndef PLUGIN
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#define NPL 3+1 // Number of PLugins ( +1 list ends with NULL )
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// List of plugins
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extern ao_plugin_functions_t audio_plugin_delay;
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extern ao_plugin_functions_t audio_plugin_format;
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extern ao_plugin_functions_t audio_plugin_surround;
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#define AO_PLUGINS { \
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&audio_plugin_delay, \
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&audio_plugin_format, \
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&audio_plugin_surround, \
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NULL \
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}
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#endif /* PLUGIN */
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// Control parameters used by the plugins
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#define AOCONTROL_PLUGIN_SET_LEN 1 // All plugins must respond to this parameter
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#endif
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