/* * plugins.h - helper for plugins */ #ifndef _PLUGINS_H_ #define _PLUGINS_H_ #include "streamfile.h" //todo rename to api.h once public enough #if 0 /* define standard C param call and name mangling (to avoid __stdcall / .defs) */ //#define VGMSTREAM_CALL __cdecl //needed? /* define external function types (during compilation) */ #if defined(VGMSTREAM_EXPORT) #define VGMSTREAM_API __declspec(dllexport) /* when exporting/creating vgmstream DLL */ #elif defined(VGMSTREAM_IMPORT) #define VGMSTREAM_API __declspec(dllimport) /* when importing/linking vgmstream DLL */ #else #define VGMSTREAM_API /* nothing, internal/default */ #endif //VGMSTREAM_API void VGMSTREAM_CALL vgmstream_function(void); #endif /* ****************************************** */ /* CONTEXT: simplifies plugin code */ /* ****************************************** */ typedef struct { int is_extension; /* set if filename is already an extension */ int skip_standard; /* set if shouldn't check standard formats */ int reject_extensionless; /* set if player can't play extensionless files */ int accept_unknown; /* set to allow any extension (for txth) */ int accept_common; /* set to allow known-but-common extension (when player has plugin priority) */ } vgmstream_ctx_valid_cfg; /* returns if vgmstream can parse file by extension */ int vgmstream_ctx_is_valid(const char* filename, vgmstream_ctx_valid_cfg *cfg); typedef struct { int allow_play_forever; int disable_config_override; /* song mofidiers */ int play_forever; /* keeps looping forever (needs loop points) */ int ignore_loop; /* ignores loops points */ int force_loop; /* enables full loops (0..samples) if file doesn't have loop points */ int really_force_loop; /* forces full loops even if file has loop points */ int ignore_fade; /* don't fade after N loops */ /* song processing */ double loop_count; /* target loops */ double fade_delay; /* fade delay after target loops */ double fade_time; /* fade period after target loops */ //int downmix; /* max number of channels allowed (0=disable downmix) */ } vgmstream_cfg_t; // WARNING: these are not stable and may change anytime without notice void vgmstream_apply_config(VGMSTREAM* vgmstream, vgmstream_cfg_t* pcfg); int32_t vgmstream_get_samples(VGMSTREAM* vgmstream); int vgmstream_get_play_forever(VGMSTREAM* vgmstream); void vgmstream_set_play_forever(VGMSTREAM* vgmstream, int enabled); #if 0 //possible future public/opaque API /* opaque player state */ //#define VGMSTREAM_CTX_VERSION 1 typedef struct VGMSTREAM_CTX VGMSTREAM_CTX; /* Setups base vgmstream player context. */ VGMSTREAM_CTX* vgmstream_init_ctx(void); /* Sets default config, that will be applied to song on open (some formats like TXTP may override * these settings). * May only be called without song loaded (before _open or after _close), otherwise ignored. */ void vgmstream_set_config(VGMSTREAM_CTX* vctx, VGMSTREAM_CFG* vcfg); void vgmstream_set_buffer(VGMSTREAM_CTX* vctx, int samples, int max_samples); /* Opens a new STREAMFILE to play. Returns < 0 on error when the file isn't recogniced. * If file has subsongs, first open usually loads first subsong. get_info then can be used to check * whether file has more subsongs (total_subsongs > 1), and call others. * */ int vgmstream_open(STREAMFILE* sf); int vgmstream_open_subsong(STREAMFILE* sf, int subsong); typedef struct { const int channels; const int sample_rate; const int sample_count; /* file's samples (not final duration) */ const int loop_start_sample; const int loop_end_sample; const int loop_flag; const int current_subsong; /* 0=not set, N=loaded subsong N */ const int total_subsongs; /* 0=format has no subsongs, N=has N subsongs */ const int file_bitrate; /* file's average bitrate */ //const int codec_bitrate; /* codec's average bitrate */ /* descriptions */ //const char* codec; //const char* layout; //const char* metadata; //int type; /* 0=pcm16, 1=float32, always interleaved: [0]=ch0, [1]=ch1 ... */ } VGMSTREAM_INFO; /* Get info from current song. */ void vgmstream_ctx_get_info(VGMSTREAM_CTX* vctx, VGMSTREAM_INFO* vinfo); /* Gets final time based on config and current song. If config is set to "play forever" * this still returns final time based on config as a reference. Returns > 0 on success. */ int32_t vgmstream_get_total_time(VGMSTREAM_CTX* vctx); double vgmstream_get_total_samples(VGMSTREAM_CTX* vctx); /* Gets current position within song. When "play forever" is set, it'll clamp results to total_time. */ int32_t vgmstream_get_current_time(VGMSTREAM_CTX* vctx); double vgmstream_get_current_samples(VGMSTREAM_CTX* vctx); /* Seeks to position */ VGMSTREAM_CTX* vgmstream_seek_absolute_sample(VGMSTREAM_CTX* vctx, int32_t sample); VGMSTREAM_CTX* vgmstream_seek_absolute_time(VGMSTREAM_CTX* vctx, double time); VGMSTREAM_CTX* vgmstream_seek_current_sample(VGMSTREAM_CTX* vctx, int32_t sample); VGMSTREAM_CTX* vgmstream_seek_current_time(VGMSTREAM_CTX* vctx, double time); /* Closes current song. */ void vgmstream_close(VGMSTREAM_CTX* vctx); /* Frees vgmstream context. */ void vgmstream_free_ctx(VGMSTREAM_CTX* vctx); /* Converts samples. returns number of rendered samples, or <=0 if no more * samples left (will fill buffer with silence) */ int vgmstream_play(VGMSTREAM_CTX* vctx); #if 0 void vgmstream_get_buffer(...); void vgmstream_format_check(...); void vgmstream_set_format_whilelist(...); void vgmstream_set_format_blacklist(...); const char* vgmstream_describe(...); const char* vgmstream_get_title(...); VGMSTREAM_TAGS* vgmstream_get_tagfile(...); #endif #endif /* ****************************************** */ /* TAGS: loads key=val tags from a file */ /* ****************************************** */ /* opaque tag state */ typedef struct VGMSTREAM_TAGS VGMSTREAM_TAGS; /* Initializes TAGS and returns pointers to extracted strings (always valid but change * on every vgmstream_tags_next_tag call). Next functions are safe to call even if this fails (validate NULL). * ex.: const char *tag_key, *tag_val; tags=vgmstream_tags_init(&tag_key, &tag_val); */ VGMSTREAM_TAGS* vgmstream_tags_init(const char* *tag_key, const char* *tag_val); /* Resets tagfile to restart reading from the beginning for a new filename. * Must be called first before extracting tags. */ void vgmstream_tags_reset(VGMSTREAM_TAGS* tags, const char* target_filename); /* Extracts next valid tag in tagfile to *tag. Returns 0 if no more tags are found (meant to be * called repeatedly until 0). Key/values are trimmed and values can be in UTF-8. */ int vgmstream_tags_next_tag(VGMSTREAM_TAGS* tags, STREAMFILE* tagfile); /* Closes tag file */ void vgmstream_tags_close(VGMSTREAM_TAGS* tags); /* ****************************************** */ /* MIXING: modifies vgmstream output */ /* ****************************************** */ /* Enables mixing effects, with max outbuf samples as a hint. Once active, plugin * must use returned input_channels to create outbuf and output_channels to output audio. * max_sample_count may be 0 if you only need to query values and not actually enable it. * Needs to be enabled last after adding effects. */ void vgmstream_mixing_enable(VGMSTREAM* vgmstream, int32_t max_sample_count, int *input_channels, int *output_channels); /* sets automatic downmixing if vgmstream's channels are higher than max_channels */ void vgmstream_mixing_autodownmix(VGMSTREAM *vgmstream, int max_channels); /* sets a fadeout */ //void vgmstream_mixing_fadeout(VGMSTREAM *vgmstream, float start_second, float duration_seconds); #endif /* _PLUGINS_H_ */