// license:BSD-3-Clause // copyright-holders:Aaron Giles /*************************************************************************** video.h Core MAME video routines. ***************************************************************************/ #pragma once #ifndef __EMU_H__ #error Dont include this file directly; include emu.h instead. #endif #ifndef MAME_EMU_VIDEO_H #define MAME_EMU_VIDEO_H #include "recording.h" #include //************************************************************************** // CONSTANTS //************************************************************************** // number of levels of frameskipping supported constexpr int FRAMESKIP_LEVELS = 12; constexpr int MAX_FRAMESKIP = FRAMESKIP_LEVELS - 2; //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> video_manager class video_manager { friend class screen_device; public: // construction/destruction video_manager(running_machine &machine); // getters running_machine &machine() const { return m_machine; } bool skip_this_frame() const { return m_skipping_this_frame; } int speed_factor() const { return m_speed; } int frameskip() const { return m_auto_frameskip ? -1 : m_frameskip_level; } bool throttled() const { return m_throttled; } float throttle_rate() const { return m_throttle_rate; } bool fastforward() const { return m_fastforward; } // setters void set_frameskip(int frameskip); void set_throttled(bool throttled) { m_throttled = throttled; } void set_throttle_rate(float throttle_rate) { m_throttle_rate = throttle_rate; } void set_fastforward(bool ffwd) { m_fastforward = ffwd; } void set_output_changed() { m_output_changed = true; } // misc void toggle_record_movie(movie_recording::format format); std::error_condition open_next(emu_file &file, const char *extension, uint32_t index = 0); void compute_snapshot_size(s32 &width, s32 &height); void pixels(u32 *buffer); // render a frame void frame_update(bool from_debugger = false); // current speed helpers std::string speed_text(); double speed_percent() const { return m_speed_percent; } int effective_frameskip() const; // snapshots bool snap_native() const { return m_snap_native; } render_target &snapshot_target() { return *m_snap_target; } void save_snapshot(screen_device *screen, util::core_file &file); void save_active_screen_snapshots(); // movies void begin_recording(const char *name, movie_recording::format format); void end_recording(); void add_sound_to_recording(const s16 *sound, int numsamples); bool is_recording() const { return !m_movie_recordings.empty(); } private: // internal helpers void exit(); void screenless_update_callback(s32 param); void postload(); // effective value helpers bool effective_autoframeskip() const; bool effective_throttle() const; // speed and throttling helpers int original_speed_setting() const; bool finish_screen_updates(); void update_throttle(attotime emutime); osd_ticks_t throttle_until_ticks(osd_ticks_t target_ticks); void update_frameskip(); void update_refresh_speed(); void recompute_speed(const attotime &emutime); // snapshot/movie helpers void create_snapshot_bitmap(screen_device *screen); void record_frame(); // movies void begin_recording_screen(const std::string &filename, uint32_t index, screen_device *screen, movie_recording::format format); // internal state running_machine & m_machine; // reference to our machine // screenless systems emu_timer * m_screenless_frame_timer; // timer to signal VBLANK start bool m_output_changed; // did an output element change? // throttling calculations osd_ticks_t m_throttle_last_ticks; // osd_ticks the last call to throttle attotime m_throttle_realtime; // real time the last call to throttle attotime m_throttle_emutime; // emulated time the last call to throttle u32 m_throttle_history; // history of frames where we were fast enough // dynamic speed computation osd_ticks_t m_speed_last_realtime; // real time at the last speed calculation attotime m_speed_last_emutime; // emulated time at the last speed calculation double m_speed_percent; // most recent speed percentage // overall speed computation u32 m_overall_real_seconds; // accumulated real seconds at normal speed osd_ticks_t m_overall_real_ticks; // accumulated real ticks at normal speed attotime m_overall_emutime; // accumulated emulated time at normal speed u32 m_overall_valid_counter; // number of consecutive valid time periods // configuration bool m_throttled; // flag: true if we're currently throttled float m_throttle_rate; // target rate for throttling bool m_fastforward; // flag: true if we're currently fast-forwarding u32 m_seconds_to_run; // number of seconds to run before quitting bool m_auto_frameskip; // flag: true if we're automatically frameskipping u32 m_speed; // overall speed (*1000) bool m_low_latency; // flag: true if we are throttling after blitting // frameskipping u8 m_empty_skip_count; // number of empty frames we have skipped u8 m_frameskip_max; // maximum frameskip level u8 m_frameskip_level; // current frameskip level u8 m_frameskip_counter; // counter that counts through the frameskip steps s8 m_frameskip_adjust; bool m_skipping_this_frame; // flag: true if we are skipping the current frame osd_ticks_t m_average_oversleep; // average number of ticks the OSD oversleeps // snapshot stuff render_target * m_snap_target; // screen shapshot target bitmap_rgb32 m_snap_bitmap; // screen snapshot bitmap bool m_snap_native; // are we using native per-screen layouts? s32 m_snap_width; // width of snapshots (0 == auto) s32 m_snap_height; // height of snapshots (0 == auto) // movie recordings std::vector m_movie_recordings; static const bool s_skiptable[FRAMESKIP_LEVELS][FRAMESKIP_LEVELS]; static const attoseconds_t ATTOSECONDS_PER_SPEED_UPDATE = ATTOSECONDS_PER_SECOND / 4; static const int PAUSED_REFRESH_RATE = 30; }; #endif // MAME_EMU_VIDEO_H