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Diffstat (limited to 'trunk/src/emu/video.h')
-rw-r--r-- | trunk/src/emu/video.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/trunk/src/emu/video.h b/trunk/src/emu/video.h new file mode 100644 index 00000000000..ba37e1d9b38 --- /dev/null +++ b/trunk/src/emu/video.h @@ -0,0 +1,210 @@ +/*************************************************************************** + + video.h + + Core MAME video routines. + +**************************************************************************** + + Copyright Aaron Giles + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * 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. + * Neither the name 'MAME' nor the names of its contributors may be + used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY AARON GILES ''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 AARON GILES 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. + +***************************************************************************/ + +#pragma once + +#ifndef __EMU_H__ +#error Dont include this file directly; include emu.h instead. +#endif + +#ifndef __VIDEO_H__ +#define __VIDEO_H__ + + +//************************************************************************** +// CONSTANTS +//************************************************************************** + +// number of levels of frameskipping supported +const int FRAMESKIP_LEVELS = 12; +const int MAX_FRAMESKIP = FRAMESKIP_LEVELS - 2; + +#define LCD_FRAMES_PER_SECOND 30 + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// forward references +class render_target; +class screen_device; +typedef struct _avi_file avi_file; + + + +// ======================> video_manager + +class video_manager +{ + friend class screen_device; + +public: + // movie format options + enum movie_format + { + MF_MNG, + MF_AVI + }; + + // 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_throttle; } + bool fastforward() const { return m_fastforward; } + bool is_recording() const { return (m_mngfile != NULL || m_avifile != NULL); } + + // setters + void set_speed_factor(int speed) { m_speed = speed; } + void set_frameskip(int frameskip); + void set_throttled(bool throttled = true) { m_throttle = throttled; } + void set_fastforward(bool ffwd = true) { m_fastforward = ffwd; } + + // render a frame + void frame_update(bool debug = false); + + // current speed helpers + astring &speed_text(astring &string); + double speed_percent() const { return m_speed_percent; } + + // snapshots + void save_snapshot(screen_device *screen, emu_file &file); + void save_active_screen_snapshots(); + + // movies + void begin_recording(const char *name, movie_format format = MF_AVI); + void end_recording(); + void add_sound_to_recording(const INT16 *sound, int numsamples); + +private: + // internal helpers + void exit(); + void screenless_update_callback(void *ptr, int param); + void postload(); + + // effective value helpers + int effective_autoframeskip() const; + int effective_frameskip() 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(attotime emutime); + + // snapshot/movie helpers + void create_snapshot_bitmap(screen_device *screen); + file_error open_next(emu_file &file, const char *extension); + void record_frame(); + + // internal state + running_machine & m_machine; // reference to our machine + + // screenless systems + emu_timer * m_screenless_frame_timer; // timer to signal VBLANK start + + // 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 + UINT32 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 + UINT32 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 + UINT32 m_overall_valid_counter; // number of consecutive valid time periods + + // configuration + bool m_throttle; // flag: TRUE if we're currently throttled + bool m_fastforward; // flag: TRUE if we're currently fast-forwarding + UINT32 m_seconds_to_run; // number of seconds to run before quitting + bool m_auto_frameskip; // flag: TRUE if we're automatically frameskipping + UINT32 m_speed; // overall speed (*1000) + + // frameskipping + UINT8 m_empty_skip_count; // number of empty frames we have skipped + UINT8 m_frameskip_level; // current frameskip level + UINT8 m_frameskip_counter; // counter that counts through the frameskip steps + INT8 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? + INT32 m_snap_width; // width of snapshots (0 == auto) + INT32 m_snap_height; // height of snapshots (0 == auto) + + // movie recording + emu_file * m_mngfile; // handle to the open movie file + avi_file * m_avifile; // handle to the open movie file + attotime m_movie_frame_period; // period of a single movie frame + attotime m_movie_next_frame_time; // time of next frame + UINT32 m_movie_frame; // current movie frame number + + static const UINT8 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; +}; + + + +// ----- debugging helpers ----- + +// assert if any pixels in the given bitmap contain an invalid palette index +bool video_assert_out_of_range_pixels(running_machine &machine, bitmap_ind16 &bitmap); + + +#endif /* __VIDEO_H__ */ |