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mpv/video/out/vo.c
Avi Halachmi (:avih) ffcad1a72b vo: improve frame drop logic on high playback rate 
Commit f1746741dee6000b7fd139e7a10f72aba0674b3b changed the drop
logic to have more slack (drop more frames but less frequent) to prevent
drops due to timing jitter when the clip and screen have similar rates.

However, if the clip has higher rate than the screen (or just higher
playback rate), then that policy hurts smoothness since these "chunked
drops" look worse than one frame drop at a time.

This patch restores the old drop logic when the playback frame rate is
higher than ~5% above the screen refresh rate, and solves this issue.

Fixes #1897
2015-05-01 19:11:44 +03:00

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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/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdbool.h>
#include <pthread.h>
#ifndef __MINGW32__
#include <unistd.h>
#include <poll.h>
#endif
#include "talloc.h"
#include "config.h"
#include "osdep/timer.h"
#include "osdep/threads.h"
#include "misc/dispatch.h"
#include "misc/rendezvous.h"
#include "options/options.h"
#include "misc/bstr.h"
#include "vo.h"
#include "aspect.h"
#include "input/input.h"
#include "options/m_config.h"
#include "common/msg.h"
#include "common/global.h"
#include "video/mp_image.h"
#include "sub/osd.h"
#include "osdep/io.h"
#include "osdep/threads.h"
extern const struct vo_driver video_out_x11;
extern const struct vo_driver video_out_vdpau;
extern const struct vo_driver video_out_xv;
extern const struct vo_driver video_out_opengl;
extern const struct vo_driver video_out_opengl_hq;
extern const struct vo_driver video_out_opengl_cb;
extern const struct vo_driver video_out_null;
extern const struct vo_driver video_out_image;
extern const struct vo_driver video_out_lavc;
extern const struct vo_driver video_out_caca;
extern const struct vo_driver video_out_drm;
extern const struct vo_driver video_out_direct3d;
extern const struct vo_driver video_out_direct3d_shaders;
extern const struct vo_driver video_out_sdl;
extern const struct vo_driver video_out_vaapi;
extern const struct vo_driver video_out_wayland;
extern const struct vo_driver video_out_rpi;
const struct vo_driver *const video_out_drivers[] =
{
#if HAVE_RPI
&video_out_rpi,
#endif
#if HAVE_GL
&video_out_opengl,
#endif
#if HAVE_VDPAU
&video_out_vdpau,
#endif
#if HAVE_DIRECT3D
&video_out_direct3d_shaders,
&video_out_direct3d,
#endif
#if HAVE_XV
&video_out_xv,
#endif
#if HAVE_SDL2
&video_out_sdl,
#endif
#if HAVE_VAAPI
&video_out_vaapi,
#endif
#if HAVE_X11
&video_out_x11,
#endif
&video_out_null,
// should not be auto-selected
&video_out_image,
#if HAVE_CACA
&video_out_caca,
#endif
#if HAVE_DRM
&video_out_drm,
#endif
#if HAVE_ENCODING
&video_out_lavc,
#endif
#if HAVE_GL
&video_out_opengl_hq,
&video_out_opengl_cb,
#endif
#if HAVE_WAYLAND
&video_out_wayland,
#endif
NULL
};
struct vo_internal {
pthread_t thread;
struct mp_dispatch_queue *dispatch;
// --- The following fields are protected by lock
pthread_mutex_t lock;
pthread_cond_t wakeup;
bool need_wakeup;
bool terminate;
int wakeup_pipe[2]; // used for VOs that use a unix FD for waiting
bool hasframe;
bool hasframe_rendered;
bool request_redraw; // redraw request from player to VO
bool want_redraw; // redraw request from VO to player
bool send_reset; // send VOCTRL_RESET
bool paused;
bool vsync_timed; // the VO redraws itself as fast as possible
// at every vsync
int queued_events; // event mask for the user
int internal_events; // event mask for us
int64_t flip_queue_offset; // queue flip events at most this much in advance
int64_t drop_count;
bool dropped_frame; // the previous frame was dropped
struct mp_image *current_frame; // last frame queued to the VO
int64_t wakeup_pts; // time at which to pull frame from decoder
bool rendering; // true if an image is being rendered
struct mp_image *frame_queued; // the image that should be rendered
int64_t frame_pts; // realtime of intended display
int64_t frame_duration; // realtime frame duration (for framedrop)
double display_fps;
// --- The following fields can be accessed from the VO thread only
int64_t vsync_interval;
int64_t vsync_interval_approx;
int64_t last_flip;
char *window_title;
};
static void forget_frames(struct vo *vo);
static void *vo_thread(void *ptr);
static bool get_desc(struct m_obj_desc *dst, int index)
{
if (index >= MP_ARRAY_SIZE(video_out_drivers) - 1)
return false;
const struct vo_driver *vo = video_out_drivers[index];
*dst = (struct m_obj_desc) {
.name = vo->name,
.description = vo->description,
.priv_size = vo->priv_size,
.priv_defaults = vo->priv_defaults,
.options = vo->options,
.hidden = vo->encode || !strcmp(vo->name, "opengl-cb"),
.p = vo,
};
return true;
}
// For the vo option
const struct m_obj_list vo_obj_list = {
.get_desc = get_desc,
.description = "video outputs",
.aliases = {
{"gl", "opengl"},
{"gl3", "opengl-hq"},
{0}
},
.allow_unknown_entries = true,
.allow_trailer = true,
};
static void dispatch_wakeup_cb(void *ptr)
{
struct vo *vo = ptr;
vo_wakeup(vo);
}
// Does not include thread- and VO uninit.
static void dealloc_vo(struct vo *vo)
{
forget_frames(vo); // implicitly synchronized
pthread_mutex_destroy(&vo->in->lock);
pthread_cond_destroy(&vo->in->wakeup);
for (int n = 0; n < 2; n++)
close(vo->in->wakeup_pipe[n]);
talloc_free(vo);
}
static struct vo *vo_create(bool probing, struct mpv_global *global,
struct vo_extra *ex, char *name, char **args)
{
struct mp_log *log = mp_log_new(NULL, global->log, "vo");
struct m_obj_desc desc;
if (!m_obj_list_find(&desc, &vo_obj_list, bstr0(name))) {
mp_msg(log, MSGL_ERR, "Video output %s not found!\n", name);
talloc_free(log);
return NULL;
};
struct vo *vo = talloc_ptrtype(NULL, vo);
*vo = (struct vo) {
.log = mp_log_new(vo, log, name),
.driver = desc.p,
.opts = &global->opts->vo,
.global = global,
.encode_lavc_ctx = ex->encode_lavc_ctx,
.input_ctx = ex->input_ctx,
.osd = ex->osd,
.event_fd = -1,
.monitor_par = 1,
.extra = *ex,
.probing = probing,
.in = talloc(vo, struct vo_internal),
};
talloc_steal(vo, log);
*vo->in = (struct vo_internal) {
.dispatch = mp_dispatch_create(vo),
};
mp_make_wakeup_pipe(vo->in->wakeup_pipe);
mp_dispatch_set_wakeup_fn(vo->in->dispatch, dispatch_wakeup_cb, vo);
pthread_mutex_init(&vo->in->lock, NULL);
pthread_cond_init(&vo->in->wakeup, NULL);
mp_input_set_mouse_transform(vo->input_ctx, NULL, NULL);
if (vo->driver->encode != !!vo->encode_lavc_ctx)
goto error;
struct m_config *config = m_config_from_obj_desc(vo, vo->log, &desc);
if (m_config_apply_defaults(config, name, vo->opts->vo_defs) < 0)
goto error;
if (m_config_set_obj_params(config, args) < 0)
goto error;
vo->priv = config->optstruct;
if (pthread_create(&vo->in->thread, NULL, vo_thread, vo))
goto error;
if (mp_rendezvous(vo, 0) < 0) { // init barrier
pthread_join(vo->in->thread, NULL);
goto error;
}
return vo;
error:
dealloc_vo(vo);
return NULL;
}
struct vo *init_best_video_out(struct mpv_global *global, struct vo_extra *ex)
{
struct m_obj_settings *vo_list = global->opts->vo.video_driver_list;
// first try the preferred drivers, with their optional subdevice param:
if (vo_list && vo_list[0].name) {
for (int n = 0; vo_list[n].name; n++) {
// Something like "-vo name," allows fallback to autoprobing.
if (strlen(vo_list[n].name) == 0)
goto autoprobe;
bool p = !!vo_list[n + 1].name;
struct vo *vo = vo_create(p, global, ex, vo_list[n].name,
vo_list[n].attribs);
if (vo)
return vo;
}
return NULL;
}
autoprobe:
// now try the rest...
for (int i = 0; video_out_drivers[i]; i++) {
const struct vo_driver *driver = video_out_drivers[i];
if (driver == &video_out_null)
break;
struct vo *vo = vo_create(true, global, ex, (char *)driver->name, NULL);
if (vo)
return vo;
}
return NULL;
}
void vo_destroy(struct vo *vo)
{
struct vo_internal *in = vo->in;
mp_dispatch_lock(in->dispatch);
vo->in->terminate = true;
mp_dispatch_unlock(in->dispatch);
pthread_join(vo->in->thread, NULL);
dealloc_vo(vo);
}
// to be called from VO thread only
static void update_display_fps(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
if (in->internal_events & VO_EVENT_WIN_STATE) {
in->internal_events &= ~(unsigned)VO_EVENT_WIN_STATE;
pthread_mutex_unlock(&in->lock);
double display_fps = 0;
if (vo->global->opts->frame_drop_fps > 0) {
display_fps = vo->global->opts->frame_drop_fps;
} else {
vo->driver->control(vo, VOCTRL_GET_DISPLAY_FPS, &display_fps);
}
pthread_mutex_lock(&in->lock);
if (in->display_fps != display_fps) {
in->display_fps = display_fps;
MP_VERBOSE(vo, "Assuming %f FPS for framedrop.\n", display_fps);
// make sure to update the player
in->queued_events |= VO_EVENT_WIN_STATE;
mp_input_wakeup(vo->input_ctx);
}
}
pthread_mutex_unlock(&in->lock);
}
static void check_vo_caps(struct vo *vo)
{
int rot = vo->params->rotate;
if (rot) {
bool ok = rot % 90 ? false : (vo->driver->caps & VO_CAP_ROTATE90);
if (!ok) {
MP_WARN(vo, "Video is flagged as rotated by %d degrees, but the "
"video output does not support this.\n", rot);
}
}
}
static void run_reconfig(void *p)
{
void **pp = p;
struct vo *vo = pp[0];
struct mp_image_params *params = pp[1];
int flags = *(int *)pp[2];
int *ret = pp[3];
struct vo_internal *in = vo->in;
vo->dwidth = params->d_w;
vo->dheight = params->d_h;
talloc_free(vo->params);
vo->params = talloc_memdup(vo, params, sizeof(*params));
*ret = vo->driver->reconfig(vo, vo->params, flags);
vo->config_ok = *ret >= 0;
if (vo->config_ok) {
check_vo_caps(vo);
} else {
talloc_free(vo->params);
vo->params = NULL;
}
pthread_mutex_lock(&in->lock);
mp_image_unrefp(&in->current_frame);
forget_frames(vo);
pthread_mutex_unlock(&in->lock);
update_display_fps(vo);
}
int vo_reconfig(struct vo *vo, struct mp_image_params *params, int flags)
{
int ret;
void *p[] = {vo, params, &flags, &ret};
mp_dispatch_run(vo->in->dispatch, run_reconfig, p);
return ret;
}
static void run_control(void *p)
{
void **pp = p;
struct vo *vo = pp[0];
uint32_t request = *(int *)pp[1];
void *data = pp[2];
if (request == VOCTRL_UPDATE_WINDOW_TITLE) // legacy fallback
vo->in->window_title = talloc_strdup(vo, data);
int ret = vo->driver->control(vo, request, data);
*(int *)pp[3] = ret;
}
int vo_control(struct vo *vo, uint32_t request, void *data)
{
int ret;
void *p[] = {vo, &request, data, &ret};
mp_dispatch_run(vo->in->dispatch, run_control, p);
return ret;
}
// must be called locked
static void forget_frames(struct vo *vo)
{
struct vo_internal *in = vo->in;
in->hasframe = false;
in->hasframe_rendered = false;
in->drop_count = 0;
mp_image_unrefp(&in->frame_queued);
// don't unref current_frame; we always want to be able to redraw it
}
#ifndef __MINGW32__
static void wait_event_fd(struct vo *vo, int64_t until_time)
{
struct vo_internal *in = vo->in;
struct pollfd fds[2] = {
{ .fd = vo->event_fd, .events = POLLIN },
{ .fd = in->wakeup_pipe[0], .events = POLLIN },
};
int64_t wait_us = until_time - mp_time_us();
int timeout_ms = MPCLAMP((wait_us + 500) / 1000, 0, 10000);
poll(fds, 2, timeout_ms);
if (fds[1].revents & POLLIN) {
char buf[100];
read(in->wakeup_pipe[0], buf, sizeof(buf)); // flush
}
}
static void wakeup_event_fd(struct vo *vo)
{
struct vo_internal *in = vo->in;
write(in->wakeup_pipe[1], &(char){0}, 1);
}
#else
static void wait_event_fd(struct vo *vo, int64_t until_time){}
static void wakeup_event_fd(struct vo *vo){}
#endif
// Called unlocked.
static void wait_vo(struct vo *vo, int64_t until_time)
{
struct vo_internal *in = vo->in;
if (vo->event_fd >= 0) {
wait_event_fd(vo, until_time);
pthread_mutex_lock(&in->lock);
in->need_wakeup = false;
pthread_mutex_unlock(&in->lock);
} else if (vo->driver->wait_events) {
vo->driver->wait_events(vo, until_time);
pthread_mutex_lock(&in->lock);
in->need_wakeup = false;
pthread_mutex_unlock(&in->lock);
} else {
pthread_mutex_lock(&in->lock);
if (!in->need_wakeup)
mpthread_cond_timedwait(&in->wakeup, &in->lock, until_time);
in->need_wakeup = false;
pthread_mutex_unlock(&in->lock);
}
}
static void wakeup_locked(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_cond_signal(&in->wakeup);
if (vo->event_fd >= 0)
wakeup_event_fd(vo);
if (vo->driver->wakeup)
vo->driver->wakeup(vo);
in->need_wakeup = true;
}
// Wakeup VO thread, and make it check for new events with VOCTRL_CHECK_EVENTS.
// To be used by threaded VO backends.
void vo_wakeup(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
wakeup_locked(vo);
pthread_mutex_unlock(&in->lock);
}
// Whether vo_queue_frame() can be called. If the VO is not ready yet, the
// function will return false, and the VO will call the wakeup callback once
// it's ready.
// next_pts is the exact time when the next frame should be displayed. If the
// VO is ready, but the time is too "early", return false, and call the wakeup
// callback once the time is right.
bool vo_is_ready_for_frame(struct vo *vo, int64_t next_pts)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
bool r = vo->config_ok && !in->frame_queued;
if (r) {
// Don't show the frame too early - it would basically freeze the
// display by disallowing OSD redrawing or VO interaction.
// Actually render the frame at earliest 50ms before target time.
next_pts -= (uint64_t)(0.050 * 1e6);
next_pts -= in->flip_queue_offset;
int64_t now = mp_time_us();
if (next_pts > now)
r = false;
if (!in->wakeup_pts || next_pts < in->wakeup_pts) {
in->wakeup_pts = in->vsync_timed ? 0 : next_pts;
wakeup_locked(vo);
}
}
pthread_mutex_unlock(&in->lock);
return r;
}
// Direct the VO thread to put the currently queued image on the screen.
// vo_is_ready_for_frame() must have returned true before this call.
// Ownership of the image is handed to the vo.
void vo_queue_frame(struct vo *vo, struct mp_image *image,
int64_t pts_us, int64_t duration)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
assert(vo->config_ok && !in->frame_queued);
in->hasframe = true;
in->frame_queued = image;
in->frame_pts = pts_us;
in->frame_duration = duration;
in->wakeup_pts = in->vsync_timed ? 0 : in->frame_pts + MPMAX(duration, 0);
wakeup_locked(vo);
pthread_mutex_unlock(&in->lock);
}
// If a frame is currently being rendered (or queued), wait until it's done.
// Otherwise, return immediately.
void vo_wait_frame(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
while (in->frame_queued || in->rendering)
pthread_cond_wait(&in->wakeup, &in->lock);
pthread_mutex_unlock(&in->lock);
}
// needs lock
static int64_t prev_sync(struct vo *vo, int64_t ts)
{
struct vo_internal *in = vo->in;
int64_t diff = (int64_t)(ts - in->last_flip);
int64_t offset = diff % in->vsync_interval;
if (offset < 0)
offset += in->vsync_interval;
return ts - offset;
}
static bool render_frame(struct vo *vo)
{
struct vo_internal *in = vo->in;
update_display_fps(vo);
pthread_mutex_lock(&in->lock);
vo->in->vsync_interval = in->display_fps > 0 ? 1e6 / in->display_fps : 0;
vo->in->vsync_interval = MPMAX(vo->in->vsync_interval, 1);
int64_t pts = in->frame_pts;
int64_t duration = in->frame_duration;
struct mp_image *img = in->frame_queued;
if (!img && (!in->vsync_timed || in->paused || pts <= 0))
goto nothing_done;
if (in->vsync_timed && !in->hasframe)
goto nothing_done;
if (img)
mp_image_setrefp(&in->current_frame, img);
in->frame_queued = NULL;
// The next time a flip (probably) happens.
int64_t prev_vsync = prev_sync(vo, mp_time_us());
int64_t next_vsync = prev_vsync + in->vsync_interval;
int64_t end_time = pts + duration;
// Time at which we should flip_page on the VO.
int64_t target = pts - in->flip_queue_offset;
if (!in->hasframe_rendered)
duration = -1; // disable framedrop
// If the clip and display have similar/identical fps, it's possible that
// we'll be very slightly late frequently due to timing jitter, or if the
// clip/container timestamps are not very accurate.
// So if we dropped the previous frame, keep dropping until we're aligned
// perfectly, else, allow some slack (1 vsync) to let it settle into a rhythm.
// On low clip fps, we don't drop anyway and the slack logic doesn't matter.
// If the clip fps is more than ~5% above screen fps, we remove this slack
// and use "normal" logic to allow more regular drops of 1 frame at a time.
bool use_slack = duration > (0.95 * in->vsync_interval);
in->dropped_frame = duration >= 0 &&
use_slack ?
((in->dropped_frame && end_time < next_vsync) ||
(end_time < prev_vsync)) // hard threshold - 1 vsync late
:
end_time < next_vsync; // normal frequent drops
in->dropped_frame &= !(vo->driver->caps & VO_CAP_FRAMEDROP);
in->dropped_frame &= (vo->global->opts->frame_dropping & 1);
// Even if we're hopelessly behind, rather degrade to 10 FPS playback,
// instead of just freezing the display forever.
in->dropped_frame &= mp_time_us() - in->last_flip < 100 * 1000;
if (in->vsync_timed) {
// this is a heuristic that wakes the thread up some
// time before the next vsync
target = next_vsync - MPMIN(in->vsync_interval / 2, 8e3);
// We are very late with the frame and using vsync timing: probably
// no new frames are coming in. This must be done whether or not
// framedrop is enabled. Also, if the frame is to be dropped, even
// though it's an interpolated frame (img==NULL), exit early.
if (!img && ((in->hasframe_rendered &&
prev_vsync > pts + duration + in->vsync_interval_approx)
|| in->dropped_frame))
{
in->dropped_frame = false;
goto nothing_done;
}
}
if (in->dropped_frame) {
talloc_free(img);
} else {
in->rendering = true;
in->hasframe_rendered = true;
pthread_mutex_unlock(&in->lock);
mp_input_wakeup(vo->input_ctx); // core can queue new video now
MP_STATS(vo, "start video");
if (in->vsync_timed) {
struct frame_timing t = (struct frame_timing) {
.pts = pts,
.next_vsync = next_vsync,
.prev_vsync = prev_vsync,
};
vo->driver->draw_image_timed(vo, img, &t);
} else {
vo->driver->draw_image(vo, img);
}
while (1) {
int64_t now = mp_time_us();
if (target <= now)
break;
mp_sleep_us(target - now);
}
bool drop = false;
if (vo->driver->flip_page_timed)
drop = vo->driver->flip_page_timed(vo, pts, duration) < 1;
else
vo->driver->flip_page(vo);
int64_t prev_flip = in->last_flip;
in->last_flip = -1;
vo->driver->control(vo, VOCTRL_GET_RECENT_FLIP_TIME, &in->last_flip);
if (in->last_flip < 0)
in->last_flip = mp_time_us();
in->vsync_interval_approx = in->last_flip - prev_flip;
MP_STATS(vo, "end video");
pthread_mutex_lock(&in->lock);
in->dropped_frame = drop;
in->rendering = false;
}
if (in->dropped_frame) {
in->drop_count += 1;
} else {
vo->want_redraw = false;
in->want_redraw = false;
in->request_redraw = false;
}
pthread_cond_signal(&in->wakeup); // for vo_wait_frame()
mp_input_wakeup(vo->input_ctx);
pthread_mutex_unlock(&in->lock);
return true;
nothing_done:
pthread_mutex_unlock(&in->lock);
return false;
}
static void do_redraw(struct vo *vo)
{
struct vo_internal *in = vo->in;
vo->want_redraw = false;
pthread_mutex_lock(&in->lock);
in->request_redraw = false;
in->want_redraw = false;
bool full_redraw = in->dropped_frame;
struct mp_image *img = NULL;
if (vo->config_ok && !(vo->driver->untimed))
img = mp_image_new_ref(in->current_frame);
if (img)
in->dropped_frame = false;
pthread_mutex_unlock(&in->lock);
if (full_redraw || vo->driver->control(vo, VOCTRL_REDRAW_FRAME, NULL) < 1) {
if (img)
vo->driver->draw_image(vo, img);
} else {
talloc_free(img);
}
if (vo->driver->flip_page_timed)
vo->driver->flip_page_timed(vo, 0, -1);
else
vo->driver->flip_page(vo);
}
static void *vo_thread(void *ptr)
{
struct vo *vo = ptr;
struct vo_internal *in = vo->in;
mpthread_set_name("vo");
int r = vo->driver->preinit(vo) ? -1 : 0;
mp_rendezvous(vo, r); // init barrier
if (r < 0)
return NULL;
update_display_fps(vo);
vo_event(vo, VO_EVENT_WIN_STATE);
while (1) {
mp_dispatch_queue_process(vo->in->dispatch, 0);
if (in->terminate)
break;
vo->driver->control(vo, VOCTRL_CHECK_EVENTS, NULL);
bool frame_shown = render_frame(vo);
int64_t now = mp_time_us();
int64_t wait_until = now + (frame_shown ? 0 : (int64_t)1e9);
pthread_mutex_lock(&in->lock);
if (in->wakeup_pts) {
if (in->wakeup_pts > now) {
wait_until = MPMIN(wait_until, in->wakeup_pts);
} else {
in->wakeup_pts = 0;
mp_input_wakeup(vo->input_ctx);
}
}
if (vo->want_redraw && !in->want_redraw) {
in->want_redraw = true;
mp_input_wakeup(vo->input_ctx);
}
bool redraw = in->request_redraw;
bool send_reset = in->send_reset;
in->send_reset = false;
pthread_mutex_unlock(&in->lock);
if (send_reset)
vo->driver->control(vo, VOCTRL_RESET, NULL);
if (wait_until > now && redraw) {
do_redraw(vo); // now is a good time
continue;
}
wait_vo(vo, wait_until);
}
forget_frames(vo); // implicitly synchronized
mp_image_unrefp(&in->current_frame);
vo->driver->uninit(vo);
return NULL;
}
void vo_set_paused(struct vo *vo, bool paused)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
if (in->paused != paused) {
in->paused = paused;
if (in->paused && in->dropped_frame)
in->request_redraw = true;
}
pthread_mutex_unlock(&in->lock);
vo_control(vo, paused ? VOCTRL_PAUSE : VOCTRL_RESUME, NULL);
}
int64_t vo_get_drop_count(struct vo *vo)
{
pthread_mutex_lock(&vo->in->lock);
int64_t r = vo->in->drop_count;
pthread_mutex_unlock(&vo->in->lock);
return r;
}
void vo_increment_drop_count(struct vo *vo, int64_t n)
{
pthread_mutex_lock(&vo->in->lock);
vo->in->drop_count += n;
pthread_mutex_unlock(&vo->in->lock);
}
// Make the VO redraw the OSD at some point in the future.
void vo_redraw(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
if (!in->request_redraw) {
in->request_redraw = true;
wakeup_locked(vo);
}
pthread_mutex_unlock(&in->lock);
}
bool vo_want_redraw(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
bool r = in->want_redraw;
pthread_mutex_unlock(&in->lock);
return r;
}
void vo_seek_reset(struct vo *vo)
{
pthread_mutex_lock(&vo->in->lock);
forget_frames(vo);
vo->in->send_reset = true;
wakeup_locked(vo);
pthread_mutex_unlock(&vo->in->lock);
}
// Return true if there is still a frame being displayed (or queued).
// If this returns true, a wakeup some time in the future is guaranteed.
bool vo_still_displaying(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&vo->in->lock);
int64_t now = mp_time_us();
int64_t frame_end = in->frame_pts + MPMAX(in->frame_duration, 0);
bool working = now < frame_end || in->rendering || in->frame_queued;
pthread_mutex_unlock(&vo->in->lock);
return working && in->hasframe;
}
// Whether at least 1 frame was queued or rendered since last seek or reconfig.
bool vo_has_frame(struct vo *vo)
{
return vo->in->hasframe;
}
static void run_query_format(void *p)
{
void **pp = p;
struct vo *vo = pp[0];
uint8_t *list = pp[1];
for (int format = IMGFMT_START; format < IMGFMT_END; format++)
list[format - IMGFMT_START] = vo->driver->query_format(vo, format);
}
// For each item in the list (allocated as uint8_t[IMGFMT_END - IMGFMT_START]),
// set the supported format flags.
void vo_query_formats(struct vo *vo, uint8_t *list)
{
void *p[] = {vo, list};
mp_dispatch_run(vo->in->dispatch, run_query_format, p);
}
// Calculate the appropriate source and destination rectangle to
// get a correctly scaled picture, including pan-scan.
// out_src: visible part of the video
// out_dst: area of screen covered by the video source rectangle
// out_osd: OSD size, OSD margins, etc.
// Must be called from the VO thread only.
void vo_get_src_dst_rects(struct vo *vo, struct mp_rect *out_src,
struct mp_rect *out_dst, struct mp_osd_res *out_osd)
{
if (!vo->params) {
*out_src = *out_dst = (struct mp_rect){0};
*out_osd = (struct mp_osd_res){0};
return;
}
mp_get_src_dst_rects(vo->log, vo->opts, vo->driver->caps, vo->params,
vo->dwidth, vo->dheight, vo->monitor_par,
out_src, out_dst, out_osd);
}
// Return the window title the VO should set. Always returns a null terminated
// string. The string is valid until frontend code is invoked again. Copy it if
// you need to keep the string for an extended period of time.
// Must be called from the VO thread only.
// Don't use for new code.
const char *vo_get_window_title(struct vo *vo)
{
if (!vo->in->window_title)
vo->in->window_title = talloc_strdup(vo, "");
return vo->in->window_title;
}
// flip_page[_timed] will be called offset_us microseconds too early.
// (For vo_vdpau, which does its own timing.)
// Setting vsync_timed to true redraws as fast as possible.
// (For vo_opengl smoothmotion.)
void vo_set_flip_queue_params(struct vo *vo, int64_t offset_us, bool vsync_timed)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
in->flip_queue_offset = offset_us;
in->vsync_timed = vsync_timed;
pthread_mutex_unlock(&in->lock);
}
// to be called from the VO thread only
int64_t vo_get_vsync_interval(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
int64_t res = vo->in->vsync_interval;
pthread_mutex_unlock(&in->lock);
return res;
}
double vo_get_display_fps(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
double res = vo->in->display_fps;
pthread_mutex_unlock(&in->lock);
return res;
}
// Set specific event flags, and wakeup the playback core if needed.
// vo_query_and_reset_events() can retrieve the events again.
void vo_event(struct vo *vo, int event)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
if ((in->queued_events & event & VO_EVENTS_USER) != (event & VO_EVENTS_USER))
mp_input_wakeup(vo->input_ctx);
in->queued_events |= event;
in->internal_events |= event;
pthread_mutex_unlock(&in->lock);
}
// Check event flags set with vo_event(). Return the mask of events that was
// set and included in the events parameter. Clear the returned events.
int vo_query_and_reset_events(struct vo *vo, int events)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
int r = in->queued_events & events;
in->queued_events &= ~(unsigned)r;
pthread_mutex_unlock(&in->lock);
return r;
}
struct mp_image *vo_get_current_frame(struct vo *vo)
{
struct vo_internal *in = vo->in;
pthread_mutex_lock(&in->lock);
struct mp_image *r = mp_image_new_ref(vo->in->current_frame);
pthread_mutex_unlock(&in->lock);
return r;
}
/*
* lookup an integer in a table, table must have 0 as the last key
* param: key key to search for
* returns translation corresponding to key or "to" value of last mapping
* if not found.
*/
int lookup_keymap_table(const struct mp_keymap *map, int key)
{
while (map->from && map->from != key)
map++;
return map->to;
}
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