312 lines
13 KiB
C++
312 lines
13 KiB
C++
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/*
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* libopenmpt_ext.hpp
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* ------------------
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* Purpose: libopenmpt public c++ interface for libopenmpt extensions
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* Notes :
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#ifndef LIBOPENMPT_EXT_HPP
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#define LIBOPENMPT_EXT_HPP
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#include "libopenmpt_config.h"
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#include "libopenmpt.hpp"
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/*!
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* \page libopenmpt_ext_cpp_overview libopenmpt_ext C++ API
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*
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* libopenmpt_ext is now included in all builds by default.
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*
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* \section libopenmpt-ext-cpp-detailed Detailed documentation
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*
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* \ref libopenmpt_ext_cpp
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*
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*/
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/*! \defgroup libopenmpt_ext_cpp libopenmpt_ext C++ */
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/*! \addtogroup libopenmpt_ext_cpp
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@{
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*/
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namespace openmpt {
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class module_ext_impl;
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class LIBOPENMPT_CXX_API module_ext : public module {
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private:
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module_ext_impl * ext_impl;
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private:
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// non-copyable
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module_ext( const module_ext & );
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void operator = ( const module_ext & );
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public:
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module_ext( std::istream & stream, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const std::vector<std::byte> & data, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const std::vector<std::uint8_t> & data, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const std::vector<char> & data, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const std::byte * data, std::size_t size, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const std::uint8_t * data, std::size_t size, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const char * data, std::size_t size, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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module_ext( const void * data, std::size_t size, std::ostream & log = std::clog, const std::map< std::string, std::string > & ctls = detail::initial_ctls_map() );
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virtual ~module_ext();
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public:
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//! Retrieve a libopenmpt extension.
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/*! Example: Retrieving the interactive extension to change the tempo of a module:
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\code{.cpp}
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openmpt::module_ext *mod = new openmpt::module_ext( stream );
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#ifdef LIBOPENMPT_EXT_INTERFACE_INTERACTIVE
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openmpt::ext::interactive *interactive = static_cast<openmpt::ext::interactive *>( self->mod->get_interface( openmpt::ext::interactive_id ) );
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if ( interactive ) {
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interactive->set_tempo_factor( 2.0 ); // play module at double speed
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} else {
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// interface not available
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}
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#else
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// interfae not available
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#endif
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\endcode
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\param interface_id The name of the extension interface to retrieve.
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\return The interface object. This may be a nullptr if the extension was not found.
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*/
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void * get_interface( const std::string & interface_id );
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}; // class module_ext
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namespace ext {
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#define LIBOPENMPT_DECLARE_EXT_CXX_INTERFACE(name) \
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static const char name ## _id [] = # name ; \
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class name; \
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/**/
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#define LIBOPENMPT_EXT_CXX_INTERFACE(name) \
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protected: \
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name () {} \
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virtual ~ name () {} \
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public: \
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/**/
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#ifndef LIBOPENMPT_EXT_INTERFACE_PATTERN_VIS
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#define LIBOPENMPT_EXT_INTERFACE_PATTERN_VIS
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#endif
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LIBOPENMPT_DECLARE_EXT_CXX_INTERFACE(pattern_vis)
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class pattern_vis {
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LIBOPENMPT_EXT_CXX_INTERFACE(pattern_vis)
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//! Pattern command type
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enum effect_type {
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effect_unknown = 0,
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effect_general = 1,
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effect_global = 2,
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effect_volume = 3,
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effect_panning = 4,
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effect_pitch = 5
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}; // enum effect_type
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//! Get pattern command type for pattern highlighting
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/*!
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\param pattern The pattern whose data should be retrieved.
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\param row The row from which the data should be retrieved.
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\param channel The channel from which the data should be retrieved.
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\return The command type in the effect column at the given pattern position (see openmpt::ext::pattern_vis::effect_type)
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\sa openmpt::ext::pattern_vis::get_pattern_row_channel_effect_type
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*/
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virtual effect_type get_pattern_row_channel_volume_effect_type( std::int32_t pattern, std::int32_t row, std::int32_t channel ) const = 0;
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//! Get pattern command type for pattern highlighting
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/*!
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\param pattern The pattern whose data should be retrieved.
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\param row The row from which the data should be retrieved.
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\param channel The channel from which the data should be retrieved.
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\return The command type in the volume column at the given pattern position (see openmpt::ext::pattern_vis::effect_type)
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\sa openmpt::ext::pattern_vis::get_pattern_row_channel_volume_effect_type
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*/
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virtual effect_type get_pattern_row_channel_effect_type( std::int32_t pattern, std::int32_t row, std::int32_t channel ) const = 0;
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}; // class pattern_vis
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#ifndef LIBOPENMPT_EXT_INTERFACE_INTERACTIVE
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#define LIBOPENMPT_EXT_INTERFACE_INTERACTIVE
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#endif
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LIBOPENMPT_DECLARE_EXT_CXX_INTERFACE(interactive)
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class interactive {
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LIBOPENMPT_EXT_CXX_INTERFACE(interactive)
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//! Set the current ticks per row (speed)
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/*!
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\param speed The new tick count in range [1, 65535].
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the speed is outside the specified range.
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\remarks The tick count may be reset by pattern commands at any time.
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\sa openmpt::module::get_current_speed
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*/
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virtual void set_current_speed( std::int32_t speed ) = 0;
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//! Set the current module tempo
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/*!
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\param tempo The new tempo in range [32, 512]. The exact meaning of the value depends on the tempo mode used by the module.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the tempo is outside the specified range.
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\remarks The tempo may be reset by pattern commands at any time. Use openmpt::ext:interactive::set_tempo_factor to apply a tempo factor that is independent of pattern commands.
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\sa openmpt::module::get_current_tempo
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*/
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virtual void set_current_tempo( std::int32_t tempo ) = 0;
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//! Set the current module tempo factor without affecting playback pitch
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/*!
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\param factor The new tempo factor in range ]0.0, 4.0] - 1.0 means unmodified tempo.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the factor is outside the specified range.
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\remarks Modifying the tempo without applying the same pitch factor using openmpt::ext::interactive::set_pitch_factor may cause rhythmic samples (e.g. drum loops) to go out of sync.
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\sa openmpt::ext::interactive::get_tempo_factor
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*/
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virtual void set_tempo_factor( double factor ) = 0;
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//! Gets the current module tempo factor
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/*!
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\return The current tempo factor.
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\sa openmpt::ext::interactive::set_tempo_factor
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*/
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virtual double get_tempo_factor( ) const = 0;
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//! Set the current module pitch factor without affecting playback speed
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/*!
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\param factor The new pitch factor in range ]0.0, 4.0] - 1.0 means unmodified pitch.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the factor is outside the specified range.
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\remarks Modifying the pitch without applying the the same tempo factor using openmpt::ext::interactive::set_tempo_factor may cause rhythmic samples (e.g. drum loops) to go out of sync.
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\remarks To shift the pich by `n` semitones, the parameter can be calculated as follows: `pow( 2.0, n / 12.0 )`
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\sa openmpt::ext::interactive::get_pitch_factor
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*/
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virtual void set_pitch_factor( double factor ) = 0;
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//! Gets the current module pitch factor
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/*!
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\return The current pitch factor.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the pitch is outside the specified range.
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\sa openmpt::ext::interactive::set_pitch_factor
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*/
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virtual double get_pitch_factor( ) const = 0;
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//! Set the current global volume
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/*!
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\param volume The new global volume in range [0.0, 1.0]
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the volume is outside the specified range.
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\remarks The global volume may be reset by pattern commands at any time. Use openmpt::module::set_render_param to apply a global overall volume factor that is independent of pattern commands.
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\sa openmpt::ext::interactive::get_global_volume
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*/
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virtual void set_global_volume( double volume ) = 0;
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//! Get the current global volume
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/*!
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\return The current global volume in range [0.0, 1.0]
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\sa openmpt::ext::interactive::set_global_volume
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*/
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virtual double get_global_volume( ) const = 0;
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//! Set the current channel volume for a channel
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/*!
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\param channel The channel whose volume should be set, in range [0, openmpt::module::get_num_channels()[
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\param volume The new channel volume in range [0.0, 1.0]
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the channel or volume is outside the specified range.
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\remarks The channel volume may be reset by pattern commands at any time.
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\sa openmpt::ext::interactive::get_channel_volume
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*/
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virtual void set_channel_volume( std::int32_t channel, double volume ) = 0;
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//! Get the current channel volume for a channel
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/*!
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\param channel The channel whose volume should be retrieved, in range [0, openmpt::module::get_num_channels()[
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\return The current channel volume in range [0.0, 1.0]
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the channel is outside the specified range.
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\sa openmpt::ext::interactive::set_channel_volume
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*/
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virtual double get_channel_volume( std::int32_t channel ) const = 0;
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//! Set the current mute status for a channel
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/*!
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\param channel The channel whose mute status should be set, in range [0, openmpt::module::get_num_channels()[
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\param mute The new mute status. true is muted, false is unmuted.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the channel is outside the specified range.
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\sa openmpt::ext::interactive::get_channel_mute_status
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*/
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virtual void set_channel_mute_status( std::int32_t channel, bool mute ) = 0;
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//! Get the current mute status for a channel
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/*!
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\param channel The channel whose mute status should be retrieved, in range [0, openmpt::module::get_num_channels()[
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\return The current channel mute status. true is muted, false is unmuted.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the channel is outside the specified range.
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\sa openmpt::ext::interactive::set_channel_mute_status
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*/
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virtual bool get_channel_mute_status( std::int32_t channel ) const = 0;
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//! Set the current mute status for an instrument
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/*!
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\param instrument The instrument whose mute status should be set, in range [0, openmpt::module::get_num_instruments()[ if openmpt::module::get_num_instruments is not 0, otherwise in [0, openmpt::module::get_num_samples()[
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\param mute The new mute status. true is muted, false is unmuted.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the instrument is outside the specified range.
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\sa openmpt::ext::interactive::get_instrument_mute_status
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*/
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virtual void set_instrument_mute_status( std::int32_t instrument, bool mute ) = 0;
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//! Get the current mute status for an instrument
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/*!
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\param instrument The instrument whose mute status should be retrieved, in range [0, openmpt::module::get_num_instruments()[ if openmpt::module::get_num_instruments is not 0, otherwise in [0, openmpt::module::get_num_samples()[
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\return The current instrument mute status. true is muted, false is unmuted.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the instrument is outside the specified range.
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\sa openmpt::ext::interactive::set_instrument_mute_status
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*/
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virtual bool get_instrument_mute_status( std::int32_t instrument ) const = 0;
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//! Play a note using the specified instrument
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/*!
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\param instrument The instrument that should be played, in range [0, openmpt::module::get_num_instruments()[ if openmpt::module::get_num_instruments is not 0, otherwise in [0, openmpt::module::get_num_samples()[
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\param note The note to play, in rage [0, 119]. 60 is the middle C.
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\param volume The volume at which the note should be triggered, in range [0.0, 1.0]
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\param panning The panning position at which the note should be triggered, in range [-1.0, 1.0], 0.0 is center.
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\return The channel on which the note is played. This can pe be passed to openmpt::ext::interactive::stop_note to stop the note.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the instrument or note is outside the specified range.
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\sa openmpt::ext::interactive::stop_note
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*/
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virtual std::int32_t play_note( std::int32_t instrument, std::int32_t note, double volume, double panning ) = 0;
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//! Stop the note playing on the specified channel
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/*!
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\param channel The channel on which the note should be stopped. This is the value returned by a previous play_note call.
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\throws openmpt::exception Throws an exception derived from openmpt::exception if the channel index is invalid.
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\sa openmpt::ext::interactive::play_note
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*/
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virtual void stop_note( std::int32_t channel ) = 0;
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}; // class interactive
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/* add stuff here */
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#undef LIBOPENMPT_DECLARE_EXT_CXX_INTERFACE
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#undef LIBOPENMPT_EXT_CXX_INTERFACE
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} // namespace ext
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} // namespace openmpt
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/*!
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@}
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*/
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#endif // LIBOPENMPT_EXT_HPP
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