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mpv/video/out/vo.c
wm4 51254a678c vo: rip out VO timer wakeup mechanism again 
This was used by some VOs to do timing of cursor autohiding, but we
recently moved that out of the VOs. Even though this mechanism might
be a good idea and could be needed again in future (but for what?),
it's unused now. So better just get rid of it.
2013-05-26 16:44:20 +02:00

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/*
* libvo common functions, variables used by many/all drivers.
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdbool.h>
#include <unistd.h>
#include "talloc.h"
#include "config.h"
#include "osdep/timer.h"
#include "core/options.h"
#include "core/bstr.h"
#include "vo.h"
#include "aspect.h"
#include "core/input/input.h"
#include "core/mp_fifo.h"
#include "core/m_config.h"
#include "core/mp_msg.h"
#include "video/mp_image.h"
#include "video/vfcap.h"
#include "sub/sub.h"
//
// Externally visible list of all vo drivers
//
extern struct vo_driver video_out_x11;
extern struct vo_driver video_out_vdpau;
extern struct vo_driver video_out_xv;
extern struct vo_driver video_out_opengl;
extern struct vo_driver video_out_opengl_hq;
extern struct vo_driver video_out_opengl_old;
extern struct vo_driver video_out_null;
extern struct vo_driver video_out_image;
extern struct vo_driver video_out_lavc;
extern struct vo_driver video_out_caca;
extern struct vo_driver video_out_direct3d;
extern struct vo_driver video_out_direct3d_shaders;
extern struct vo_driver video_out_sdl;
extern struct vo_driver video_out_corevideo;
const struct vo_driver *video_out_drivers[] =
{
#if CONFIG_VDPAU
&video_out_vdpau,
#endif
#ifdef CONFIG_GL
&video_out_opengl,
#endif
#ifdef CONFIG_DIRECT3D
&video_out_direct3d_shaders,
&video_out_direct3d,
#endif
#ifdef CONFIG_COREVIDEO
&video_out_corevideo,
#endif
#ifdef CONFIG_XV
&video_out_xv,
#endif
#ifdef CONFIG_SDL2
&video_out_sdl,
#endif
#ifdef CONFIG_GL
&video_out_opengl_old,
#endif
#ifdef CONFIG_X11
&video_out_x11,
#endif
&video_out_null,
// should not be auto-selected
&video_out_image,
#ifdef CONFIG_CACA
&video_out_caca,
#endif
#ifdef CONFIG_ENCODING
&video_out_lavc,
#endif
#ifdef CONFIG_GL
&video_out_opengl_hq,
#endif
NULL
};
static int vo_preinit(struct vo *vo, char *arg)
{
if (vo->driver->encode != !!vo->encode_lavc_ctx)
return -1;
if (vo->driver->priv_size) {
vo->priv = talloc_zero_size(vo, vo->driver->priv_size);
if (vo->driver->priv_defaults)
memcpy(vo->priv, vo->driver->priv_defaults, vo->driver->priv_size);
}
if (vo->driver->options) {
struct m_config *cfg = m_config_simple(vo->priv);
talloc_steal(vo->priv, cfg);
m_config_register_options(cfg, vo->driver->options);
char n[50];
int l = snprintf(n, sizeof(n), "vo/%s", vo->driver->info->short_name);
assert(l < sizeof(n));
if (vo->driver->init_option_string) {
m_config_parse_suboptions(cfg, n,
(char *)vo->driver->init_option_string);
}
int r = m_config_parse_suboptions(cfg, n, arg);
if (r < 0) {
if (vo->driver->help_text)
mp_msg(MSGT_VO, MSGL_FATAL, "%s\n", vo->driver->help_text);
return r;
}
}
return vo->driver->preinit(vo, arg);
}
int vo_control(struct vo *vo, uint32_t request, void *data)
{
return vo->driver->control(vo, request, data);
}
void vo_queue_image(struct vo *vo, struct mp_image *mpi)
{
if (!vo->config_ok)
return;
if (vo->driver->buffer_frames) {
vo->driver->draw_image(vo, mpi);
return;
}
vo->frame_loaded = true;
vo->next_pts = mpi->pts;
assert(!vo->waiting_mpi);
vo->waiting_mpi = mp_image_new_ref(mpi);
}
int vo_redraw_frame(struct vo *vo)
{
if (!vo->config_ok || !vo->hasframe)
return -1;
if (vo_control(vo, VOCTRL_REDRAW_FRAME, NULL) == true) {
vo->want_redraw = false;
vo->redrawing = true;
return 0;
}
return -1;
}
bool vo_get_want_redraw(struct vo *vo)
{
if (!vo->config_ok || !vo->hasframe)
return false;
return vo->want_redraw;
}
int vo_get_buffered_frame(struct vo *vo, bool eof)
{
if (!vo->config_ok)
return -1;
if (vo->frame_loaded)
return 0;
if (!vo->driver->buffer_frames)
return -1;
vo->driver->get_buffered_frame(vo, eof);
return vo->frame_loaded ? 0 : -1;
}
void vo_skip_frame(struct vo *vo)
{
vo_control(vo, VOCTRL_SKIPFRAME, NULL);
vo->frame_loaded = false;
mp_image_unrefp(&vo->waiting_mpi);
}
void vo_new_frame_imminent(struct vo *vo)
{
if (vo->driver->buffer_frames)
vo_control(vo, VOCTRL_NEWFRAME, NULL);
else {
assert(vo->frame_loaded);
assert(vo->waiting_mpi);
assert(vo->waiting_mpi->pts == vo->next_pts);
vo->driver->draw_image(vo, vo->waiting_mpi);
mp_image_unrefp(&vo->waiting_mpi);
}
}
void vo_draw_osd(struct vo *vo, struct osd_state *osd)
{
if (vo->config_ok && vo->driver->draw_osd)
vo->driver->draw_osd(vo, osd);
}
void vo_flip_page(struct vo *vo, unsigned int pts_us, int duration)
{
if (!vo->config_ok)
return;
if (!vo->redrawing) {
vo->frame_loaded = false;
vo->next_pts = MP_NOPTS_VALUE;
}
vo->want_redraw = false;
vo->redrawing = false;
if (vo->driver->flip_page_timed)
vo->driver->flip_page_timed(vo, pts_us, duration);
else
vo->driver->flip_page(vo);
vo->hasframe = true;
}
void vo_check_events(struct vo *vo)
{
if (!vo->config_ok) {
if (vo->registered_fd != -1)
mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
vo->registered_fd = -1;
return;
}
vo_control(vo, VOCTRL_CHECK_EVENTS, NULL);
}
void vo_seek_reset(struct vo *vo)
{
vo_control(vo, VOCTRL_RESET, NULL);
vo->frame_loaded = false;
vo->hasframe = false;
mp_image_unrefp(&vo->waiting_mpi);
}
void vo_destroy(struct vo *vo)
{
if (vo->registered_fd != -1)
mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
vo->driver->uninit(vo);
talloc_free(vo->waiting_mpi);
talloc_free(vo);
}
void list_video_out(void)
{
mp_tmsg(MSGT_CPLAYER, MSGL_INFO, "Available video output drivers:\n");
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_OUTPUTS\n");
for (int i = 0; video_out_drivers[i]; i++) {
const vo_info_t *info = video_out_drivers[i]->info;
if (!video_out_drivers[i]->encode) {
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\t%s\t%s\n",
info->short_name, info->name);
}
}
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
}
static void replace_legacy_vo_name(bstr *name)
{
bstr new = *name;
if (bstr_equals0(*name, "gl"))
new = bstr0("opengl");
if (bstr_equals0(*name, "gl3"))
new = bstr0("opengl-hq");
if (!bstr_equals(*name, new)) {
mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "VO driver '%.*s' has been replaced "
"with '%.*s'!\n", BSTR_P(*name), BSTR_P(new));
}
*name = new;
}
struct vo *init_best_video_out(struct mp_vo_opts *opts,
struct mp_fifo *key_fifo,
struct input_ctx *input_ctx,
struct encode_lavc_context *encode_lavc_ctx)
{
char **vo_list = opts->video_driver_list;
int i;
struct vo *vo = talloc_ptrtype(NULL, vo);
struct vo initial_values = {
.opts = opts,
.key_fifo = key_fifo,
.encode_lavc_ctx = encode_lavc_ctx,
.input_ctx = input_ctx,
.event_fd = -1,
.registered_fd = -1,
.aspdat = { .monitor_par = 1 },
};
// first try the preferred drivers, with their optional subdevice param:
if (vo_list && vo_list[0])
while (vo_list[0][0]) {
char *arg = vo_list[0];
bstr name = bstr0(arg);
char *params = strchr(arg, ':');
if (params) {
name = bstr_splice(name, 0, params - arg);
params++;
}
replace_legacy_vo_name(&name);
for (i = 0; video_out_drivers[i]; i++) {
const struct vo_driver *video_driver = video_out_drivers[i];
const vo_info_t *info = video_driver->info;
if (bstr_equals0(name, info->short_name)) {
// name matches, try it
*vo = initial_values;
vo->driver = video_driver;
if (!vo_preinit(vo, params))
return vo; // success!
talloc_free_children(vo);
}
}
// continue...
++vo_list;
if (!(vo_list[0])) {
talloc_free(vo);
return NULL; // do NOT fallback to others
}
}
// now try the rest...
for (i = 0; video_out_drivers[i]; i++) {
const struct vo_driver *video_driver = video_out_drivers[i];
*vo = initial_values;
vo->driver = video_driver;
if (!vo_preinit(vo, NULL))
return vo; // success!
talloc_free_children(vo);
}
talloc_free(vo);
return NULL;
}
// Fit *w/*h into the size specified by geo.
static void apply_autofit(int *w, int *h, int scr_w, int scr_h,
struct m_geometry *geo, bool allow_upscale)
{
if (!geo->wh_valid)
return;
int dummy;
int n_w = *w, n_h = *h;
m_geometry_apply(&dummy, &dummy, &n_w, &n_h, scr_w, scr_h, geo);
if (!allow_upscale && *w <= n_w && *h <= n_h)
return;
// If aspect mismatches, always make the window smaller than the fit box
double asp = (double)*w / *h;
double n_asp = (double)n_w / n_h;
if (n_asp <= asp) {
*w = n_w;
*h = n_w / asp;
} else {
*w = n_h * asp;
*h = n_h;
}
}
// Set window size (vo->dwidth/dheight) and position (vo->dx/dy) according to
// the video display size d_w/d_h.
// NOTE: currently, all GUI backends do their own handling of window geometry
// additional to this code. This is to deal with initial window placement,
// fullscreen handling, avoiding resize on config() with no size change,
// multi-monitor stuff, and possibly more.
static void determine_window_geometry(struct vo *vo, int d_w, int d_h)
{
struct mp_vo_opts *opts = vo->opts;
int scr_w = opts->screenwidth;
int scr_h = opts->screenheight;
aspect_calc_monitor(vo, &d_w, &d_h);
apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit, true);
apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit_larger, false);
vo->dx = (int)(opts->screenwidth - d_w) / 2;
vo->dy = (int)(opts->screenheight - d_h) / 2;
m_geometry_apply(&vo->dx, &vo->dy, &d_w, &d_h, scr_w, scr_h,
&opts->geometry);
vo->dx += vo->xinerama_x;
vo->dy += vo->xinerama_y;
vo->dwidth = d_w;
vo->dheight = d_h;
}
static int event_fd_callback(void *ctx, int fd)
{
struct vo *vo = ctx;
vo_check_events(vo);
return MP_INPUT_NOTHING;
}
int vo_config(struct vo *vo, uint32_t width, uint32_t height,
uint32_t d_width, uint32_t d_height, uint32_t flags,
uint32_t format)
{
aspect_save_videores(vo, width, height, d_width, d_height);
if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
determine_window_geometry(vo, d_width, d_height);
d_width = vo->dwidth;
d_height = vo->dheight;
}
int ret = vo->driver->config(vo, width, height, d_width, d_height, flags,
format);
vo->config_ok = (ret == 0);
vo->config_count += vo->config_ok;
if (vo->registered_fd == -1 && vo->event_fd != -1 && vo->config_ok) {
mp_input_add_key_fd(vo->input_ctx, vo->event_fd, 1, event_fd_callback,
NULL, vo);
vo->registered_fd = vo->event_fd;
}
vo->frame_loaded = false;
vo->waiting_mpi = NULL;
vo->redrawing = false;
vo->hasframe = false;
return ret;
}
/**
* \brief lookup an integer in a table, table must have 0 as the last key
* \param key key to search for
* \result 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;
}
static void print_video_rect(struct vo *vo, struct mp_rect src,
struct mp_rect dst, struct mp_osd_res osd)
{
int lv = MSGL_V;
int sw = src.x1 - src.x0, sh = src.y1 - src.y0;
int dw = dst.x1 - dst.x0, dh = dst.y1 - dst.y0;
mp_msg(MSGT_VO, lv, "[vo] Window size: %dx%d\n",
vo->dwidth, vo->dheight);
mp_msg(MSGT_VO, lv, "[vo] Video source: %dx%d (%dx%d)\n",
vo->aspdat.orgw, vo->aspdat.orgh,
vo->aspdat.prew, vo->aspdat.preh);
mp_msg(MSGT_VO, lv, "[vo] Video display: (%d, %d) %dx%d -> (%d, %d) %dx%d\n",
src.x0, src.y0, sw, sh, dst.x0, dst.y0, dw, dh);
mp_msg(MSGT_VO, lv, "[vo] Video scale: %f/%f\n",
(double)dw / sw, (double)dh / sh);
mp_msg(MSGT_VO, lv, "[vo] OSD borders: l=%d t=%d r=%d b=%d\n",
osd.ml, osd.mt, osd.mr, osd.mb);
mp_msg(MSGT_VO, lv, "[vo] Video borders: l=%d t=%d r=%d b=%d\n",
dst.x0, dst.y0, vo->dwidth - dst.x1, vo->dheight - dst.y1);
}
static void src_dst_split_scaling(int src_size, int dst_size,
int scaled_src_size, int *src_start,
int *src_end, int *dst_start, int *dst_end)
{
if (scaled_src_size > dst_size) {
int border = src_size * (scaled_src_size - dst_size) / scaled_src_size;
// round to a multiple of 2, this is at least needed for vo_direct3d
// and ATI cards
border = (border / 2 + 1) & ~1;
*src_start = border;
*src_end = src_size - border;
*dst_start = 0;
*dst_end = dst_size;
} else {
*src_start = 0;
*src_end = src_size;
*dst_start = (dst_size - scaled_src_size) / 2;
*dst_end = *dst_start + scaled_src_size;
}
}
// 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.
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)
{
int src_w = vo->aspdat.orgw;
int src_h = vo->aspdat.orgh;
struct mp_rect dst = {0, 0, vo->dwidth, vo->dheight};
struct mp_rect src = {0, 0, src_w, src_h};
struct mp_osd_res osd = {
.w = vo->dwidth,
.h = vo->dheight,
.display_par = vo->aspdat.monitor_par,
.video_par = vo->aspdat.par,
};
if (vo->opts->keepaspect) {
int scaled_width, scaled_height;
aspect_calc_panscan(vo, &scaled_width, &scaled_height);
int border_w = vo->dwidth - scaled_width;
int border_h = vo->dheight - scaled_height;
osd.ml = border_w / 2;
osd.mt = border_h / 2;
osd.mr = border_w - osd.ml;
osd.mb = border_h - osd.mt;
src_dst_split_scaling(src_w, vo->dwidth, scaled_width,
&src.x0, &src.x1, &dst.x0, &dst.x1);
src_dst_split_scaling(src_h, vo->dheight, scaled_height,
&src.y0, &src.y1, &dst.y0, &dst.y1);
}
*out_src = src;
*out_dst = dst;
*out_osd = osd;
print_video_rect(vo, src, dst, 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.
const char *vo_get_window_title(struct vo *vo)
{
if (!vo->window_title)
vo->window_title = talloc_strdup(vo, "");
return vo->window_title;
}
/**
* Generates a mouse movement message if those are enable and sends it
* to the "main" MPlayer.
*
* \param posx new x position of mouse
* \param posy new y position of mouse
*/
void vo_mouse_movement(struct vo *vo, int posx, int posy)
{
char cmd_str[40];
if (!vo->opts->enable_mouse_movements)
return;
snprintf(cmd_str, sizeof(cmd_str), "set_mouse_pos %i %i", posx, posy);
mp_input_queue_cmd(vo->input_ctx, mp_input_parse_cmd(bstr0(cmd_str), ""));
}
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