mpv/input/input.h

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MPLAYER_INPUT_H
#define MPLAYER_INPUT_H
#include <stdbool.h>
#include "misc/bstr.h"
#include "cmd_list.h"
#include "cmd_parse.h"
// For mp_input_put_key(): release all keys that are down.
#define MP_INPUT_RELEASE_ALL -1
enum mp_cmd_flags {
MP_ON_OSD_NO = 0, // prefer not using OSD
MP_ON_OSD_AUTO = 1, // use default behavior of the specific command
MP_ON_OSD_BAR = 2, // force a bar, if applicable
MP_ON_OSD_MSG = 4, // force a message, if applicable
MP_EXPAND_PROPERTIES = 8, // expand strings as properties
MP_ALLOW_REPEAT = 16, // if used as keybinding, allow key repeat
MP_ON_OSD_FLAGS = MP_ON_OSD_NO | MP_ON_OSD_AUTO |
MP_ON_OSD_BAR | MP_ON_OSD_MSG,
};
enum mp_input_section_flags {
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
// If a key binding is not defined in the current section, do not search the
// other sections for it (like the default section). Instead, an unbound
// key warning will be printed.
MP_INPUT_EXCLUSIVE = 1,
// Prefer it to other sections.
MP_INPUT_ON_TOP = 2,
// Let mp_input_test_dragging() return true, even if inside the mouse area.
MP_INPUT_ALLOW_VO_DRAGGING = 4,
// Don't force mouse pointer visible, even if inside the mouse area.
MP_INPUT_ALLOW_HIDE_CURSOR = 8,
};
struct input_ctx;
struct mp_log;
struct mp_cmd_arg {
const struct m_option *type;
union {
int i;
float f;
double d;
char *s;
char **str_list;
void *p;
} v;
};
typedef struct mp_cmd {
int id;
char *name;
struct mp_cmd_arg args[MP_CMD_MAX_ARGS];
int nargs;
int flags; // mp_cmd_flags bitfield
bstr original;
char *input_section;
bool is_up_down : 1;
bool is_up : 1;
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bool emit_on_up : 1;
bool is_mouse_button : 1;
bool repeated : 1;
bool mouse_move : 1;
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
int mouse_x, mouse_y;
input: rework event reading and command queuing Rework much of the logic related to reading from event sources and queuing commands. The two biggest architecture changes are: - The code buffering keycodes in mp_fifo.c is gone. Instead key input is now immediately fed to input.c and interpreted as commands, and then the commands are buffered instead. - mp_input_get_cmd() now always tries to read every available event from every event source and convert them to (buffered) commands. Before it would only process new events until one new command became available. Some relevant behavior changes: - Before commands could be lost when stream code called mp_input_check_interrupt() which read commands (to see if they were of types that triggered aborts during slow IO tasks) and then threw them away. This was especially an issue if cache was enabled and slow to read. Fixed - now it's possible to check whether there are queued commands which will abort playback of the current file without throwing other commands away. - mp_input_check_interrupt() now prints a message if it returns true. This is especially useful because the failures caused by aborted stream reads can trigger error messages from other code that was doing the read; the new message makes it more obvious what the cause of the subsequent error messages is. - It's now possible to again avoid making stdin non-blocking (which caused some issues) without reintroducing extra latency. The change will be done in a subsequent commit. - Event sources that do not support select() should now have somewhat lower latency in certain situations as they will be checked both before and after select()/sleep in input reading; before the sleep always happened first even if such sources already had queued input. Before the key fifo was also handled in this manner (first key triggered select, but if multiple were read then rest could be delayed; however in most cases this didn't add latency in practice as after central code started doing command handling it queried for further commands with a max sleep time of 0). - Key fifo limiting is more accurate now: it now counts actual commands intead of keycodes, and all queued keys are read immediately from input devices so they can be counted correctly. - Since keypresses are now interpreted immediately, commands which change keybindings will no longer affect following keypresses that have already been read before the command is executed. This should not be an issue in practice with current keybinding behavior.
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struct mp_cmd *queue_next;
double scale; // for scaling numeric arguments
const struct mp_cmd_def *def;
char *sender; // name of the client API user which sent this
} mp_cmd_t;
struct mp_input_src {
struct mpv_global *global;
struct mp_log *log;
struct input_ctx *input_ctx;
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struct mp_input_src_internal *in;
// If not-NULL: called before destroying the input_src. Should unblock the
// reader loop, and make it exit. (Use with mp_input_add_thread_src().)
void (*cancel)(struct mp_input_src *src);
// Called after the reader thread returns, and cancel() won't be called
// again. This should make sure that nothing after this call accesses src.
void (*uninit)(struct mp_input_src *src);
// For free use by the implementer.
void *priv;
};
// Add an input source that runs on a thread. The source is automatically
// removed if the thread loop exits.
// ctx: this is passed to loop_fn.
// loop_fn: this is called once inside of a new thread, and should not return
// until all input is read, or src->cancel is called by another thread.
// You must call mp_input_src_init_done(src) early during init to signal
// success (then src->cancel may be called at a later point); on failure,
// return from loop_fn immediately.
// Returns >=0 on success, <0 on failure to allocate resources.
// Do not set src->cancel after mp_input_src_init_done() has been called.
int mp_input_add_thread_src(struct input_ctx *ictx, void *ctx,
void (*loop_fn)(struct mp_input_src *src, void *ctx));
// Signal successful init.
// Must be called on the same thread as loop_fn (see mp_input_add_thread_src()).
// Set src->cancel and src->uninit (if needed) before calling this.
void mp_input_src_init_done(struct mp_input_src *src);
// Feed text data, which will be split into lines of commands.
void mp_input_src_feed_cmd_text(struct mp_input_src *src, char *buf, size_t len);
// Process keyboard input. code is a key code from keycodes.h, possibly
// with modifiers applied. MP_INPUT_RELEASE_ALL is also a valid value.
void mp_input_put_key(struct input_ctx *ictx, int code);
// Like mp_input_put_key(), but process all UTF-8 characters in the given
// string as key events.
void mp_input_put_key_utf8(struct input_ctx *ictx, int mods, struct bstr t);
input: rework event reading and command queuing Rework much of the logic related to reading from event sources and queuing commands. The two biggest architecture changes are: - The code buffering keycodes in mp_fifo.c is gone. Instead key input is now immediately fed to input.c and interpreted as commands, and then the commands are buffered instead. - mp_input_get_cmd() now always tries to read every available event from every event source and convert them to (buffered) commands. Before it would only process new events until one new command became available. Some relevant behavior changes: - Before commands could be lost when stream code called mp_input_check_interrupt() which read commands (to see if they were of types that triggered aborts during slow IO tasks) and then threw them away. This was especially an issue if cache was enabled and slow to read. Fixed - now it's possible to check whether there are queued commands which will abort playback of the current file without throwing other commands away. - mp_input_check_interrupt() now prints a message if it returns true. This is especially useful because the failures caused by aborted stream reads can trigger error messages from other code that was doing the read; the new message makes it more obvious what the cause of the subsequent error messages is. - It's now possible to again avoid making stdin non-blocking (which caused some issues) without reintroducing extra latency. The change will be done in a subsequent commit. - Event sources that do not support select() should now have somewhat lower latency in certain situations as they will be checked both before and after select()/sleep in input reading; before the sleep always happened first even if such sources already had queued input. Before the key fifo was also handled in this manner (first key triggered select, but if multiple were read then rest could be delayed; however in most cases this didn't add latency in practice as after central code started doing command handling it queried for further commands with a max sleep time of 0). - Key fifo limiting is more accurate now: it now counts actual commands intead of keycodes, and all queued keys are read immediately from input devices so they can be counted correctly. - Since keypresses are now interpreted immediately, commands which change keybindings will no longer affect following keypresses that have already been read before the command is executed. This should not be an issue in practice with current keybinding behavior.
2011-07-17 01:47:50 +00:00
// Process scrolling input. Support for precise scrolling. Scales the given
// scroll amount add multiplies it with the command (seeking, sub-delay, etc)
void mp_input_put_axis(struct input_ctx *ictx, int direction, double value);
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
// Update mouse position (in window coordinates).
void mp_input_set_mouse_pos(struct input_ctx *ictx, int x, int y);
void mp_input_get_mouse_pos(struct input_ctx *ictx, int *x, int *y);
// Return whether we want/accept mouse input.
bool mp_input_mouse_enabled(struct input_ctx *ictx);
bool mp_input_vo_keyboard_enabled(struct input_ctx *ictx);
/* Make mp_input_set_mouse_pos() mangle the mouse coordinates. Hack for certain
* VOs. dst=NULL, src=NULL reset it. src can be NULL.
*/
struct mp_rect;
void mp_input_set_mouse_transform(struct input_ctx *ictx, struct mp_rect *dst,
struct mp_rect *src);
// Add a command to the command queue.
int mp_input_queue_cmd(struct input_ctx *ictx, struct mp_cmd *cmd);
// Return next queued command, or NULL.
struct mp_cmd *mp_input_read_cmd(struct input_ctx *ictx);
// Parse text and return corresponding struct mp_cmd.
// The location parameter is for error messages.
struct mp_cmd *mp_input_parse_cmd(struct input_ctx *ictx, bstr str,
const char *location);
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
// Set current input section. The section is appended on top of the list of
// active sections, so its bindings are considered first. If the section was
// already active, it's moved to the top as well.
// name==NULL will behave as if name=="default"
// flags is a bitfield of enum mp_input_section_flags values
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
void mp_input_enable_section(struct input_ctx *ictx, char *name, int flags);
// Undo mp_input_enable_section().
// name==NULL will behave as if name=="default"
void mp_input_disable_section(struct input_ctx *ictx, char *name);
// Like mp_input_set_section(ictx, ..., 0) for all sections.
void mp_input_disable_all_sections(struct input_ctx *ictx);
// Set the contents of an input section.
// name: name of the section, for mp_input_set_section() etc.
// location: location string (like filename) for error reporting
// contents: list of keybindings, like input.conf
// a value of NULL deletes the section
// builtin: create as builtin section; this means if the user defines bindings
// using "{name}", they won't be ignored or overwritten - instead,
// they are preferred to the bindings defined with this call
// If the section already exists, its bindings are removed and replaced.
void mp_input_define_section(struct input_ctx *ictx, char *name, char *location,
char *contents, bool builtin);
// Define where on the screen the named input section should receive.
// Setting a rectangle of size 0 unsets the mouse area.
// A rectangle with negative size disables mouse input for this section.
void mp_input_set_section_mouse_area(struct input_ctx *ictx, char *name,
int x0, int y0, int x1, int y1);
// Used to detect mouse movement.
unsigned int mp_input_get_mouse_event_counter(struct input_ctx *ictx);
input: handle mouse movement differently Before this commit, mouse movement events emitted a special command ("set_mouse_pos"), which was specially handled in command.c. This was once special-cased to the dvdnav and menu code, and did nothing after libmenu and dvdnav were removed. Change it so that mouse movement triggers a pseudo-key ("MOUSE_MOVE"), which then can be bound to an arbitrary command. The mouse position is now managed in input.c. A command which actually needs the mouse position can use either mp_input_get_mouse_pos() or mp_get_osd_mouse_pos() to query it. The former returns raw window-space coordinates, while the latter returns coordinates transformed to OSD- space. (Both are the same for most VOs, except vo_xv and vo_x11, which can't render OSD in window-space. These require extra code for mapping mouse position.) As of this commit, there is still nothing that uses mouse movement, so MOUSE_MOVE is mapped to "ignore" to silence warnings when moving the mouse (much like MOUSE_BTN0). Extend the concept of input sections. Allow multiple sections to be active at once, and organize them as stack. Bindings from the top of the stack are preferred to lower ones. Each section has a mouse input section associated, inside which mouse events are associated with the bindings. If the mouse pointer is outside of a section's mouse area, mouse events will be dispatched to an input section lower on the stack of active sections. This is intended for scripting, which is to be added later. Two scripts could occupy different areas of the screen without conflicting with each other. (If it turns out that this mechanism is useless, we'll just remove it again.)
2013-04-26 00:13:30 +00:00
// Test whether there is any input section which wants to receive events.
// Note that the mouse event is always delivered, even if this returns false.
bool mp_input_test_mouse_active(struct input_ctx *ictx, int x, int y);
// Whether input.c wants mouse drag events at this mouse position. If this
// returns false, some VOs will initiate window dragging.
bool mp_input_test_dragging(struct input_ctx *ictx, int x, int y);
// Initialize the input system
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struct mpv_global;
struct input_ctx *mp_input_init(struct mpv_global *global);
// Load config, options, and devices.
void mp_input_load(struct input_ctx *ictx);
void mp_input_uninit(struct input_ctx *ictx);
// Sleep for the given amount of seconds, until mp_input_wakeup() is called,
// or new input arrives. seconds<=0 returns immediately.
void mp_input_wait(struct input_ctx *ictx, double seconds);
// Wake up sleeping input loop from another thread.
void mp_input_wakeup(struct input_ctx *ictx);
void mp_input_wakeup_nolock(struct input_ctx *ictx);
stream: redo playback abort handling This mechanism originates from MPlayer's way of dealing with blocking network, but it's still useful. On opening and closing, mpv waits for network synchronously, and also some obscure commands and use-cases can lead to such blocking. In these situations, the stream is asynchronously forced to stop by "interrupting" it. The old design interrupting I/O was a bit broken: polling with a callback, instead of actively interrupting it. Change the direction of this. There is no callback anymore, and the player calls mp_cancel_trigger() to force the stream to return. libavformat (via stream_lavf.c) has the old broken design, and fixing it would require fixing libavformat, which won't happen so quickly. So we have to keep that part. But everything above the stream layer is prepared for a better design, and more sophisticated methods than mp_cancel_test() could be easily introduced. There's still one problem: commands are still run in the central playback loop, which we assume can block on I/O in the worst case. That's not a problem yet, because we simply mark some commands as being able to stop playback of the current file ("quit" etc.), so input.c could abort playback as soon as such a command is queued. But there are also commands abort playback only conditionally, and the logic for that is in the playback core and thus "unreachable". For example, "playlist_next" aborts playback only if there's a next file. We don't want it to always abort playback. As a quite ugly hack, abort playback only if at least 2 abort commands are queued - this pretty much happens only if the core is frozen and doesn't react to input.
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// Used to asynchronously abort playback. Needed because the core still can
// block on network in some situations.
struct mp_cancel;
void mp_input_set_cancel(struct input_ctx *ictx, struct mp_cancel *cancel);
// If this returns true, use Right Alt key as Alt Gr to produce special
// characters. If false, count Right Alt as the modifier Alt key.
bool mp_input_use_alt_gr(struct input_ctx *ictx);
// Like mp_input_parse_cmd_strv, but also run the command.
void mp_input_run_cmd(struct input_ctx *ictx, const char **cmd);
void mp_input_set_repeat_info(struct input_ctx *ictx, int rate, int delay);
void mp_input_pipe_add(struct input_ctx *ictx, const char *filename);
struct mp_ipc_ctx;
struct mp_client_api;
struct mp_ipc_ctx *mp_init_ipc(struct mp_client_api *client_api,
struct mpv_global *global);
void mp_uninit_ipc(struct mp_ipc_ctx *ctx);
#endif /* MPLAYER_INPUT_H */