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mpv/libvo/video_out.c
wm4 c113e6ed7d Remove V4L2 decoder support (vo_v4l2 and ao_v4l2) 
The removed VO and AO took MPEG data and decoded it with V4L2. I'm not
exactly sure what's the use of this today, but get rid of it.

As far as feeding video data to V4L2 is concerned, there are other
ways. For example, there is this script, that feeds yuv4mpeg formatted
raw video data to V4L2:

    https://raw.github.com/umlaeute/v4l2loopback/master/examples/yuv4mpeg_to_v4l2.c
2012-08-07 01:09:30 +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 <sys/mman.h>
#include "config.h"
#include "options.h"
#include "talloc.h"
#include "video_out.h"
#include "aspect.h"
#include "geometry.h"
#include "old_vo_wrapper.h"
#include "input/input.h"
#include "mp_fifo.h"
#include "m_config.h"
#include "mp_msg.h"
#include "osdep/shmem.h"
#ifdef CONFIG_X11
#include "x11_common.h"
#endif
int xinerama_screen = -1;
int xinerama_x;
int xinerama_y;
int vo_nomouse_input = 0;
int vo_grabpointer = 1;
int vo_doublebuffering = 1;
int vo_vsync = 1;
int vo_fs = 0;
int vo_fsmode = 0;
float vo_panscan = 0.0f;
int vo_adapter_num=0;
int vo_refresh_rate=0;
int vo_keepaspect=1;
int vo_rootwin=0;
int vo_border=1;
int64_t WinID = -1;
int vo_pts=0; // for hw decoding
float vo_fps=0;
char *vo_subdevice = NULL;
int vo_colorkey = 0x0000ff00; // default colorkey is green
// (0xff000000 means that colorkey has been disabled)
//
// 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_gl_nosw;
extern struct vo_driver video_out_gl;
extern struct vo_driver video_out_gl3;
extern struct vo_driver video_out_null;
extern struct vo_driver video_out_image;
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_directx;
extern struct vo_driver video_out_directfb;
extern struct vo_driver video_out_corevideo;
extern struct vo_driver video_out_sharedbuffer;
const struct vo_driver *video_out_drivers[] =
{
#ifdef CONFIG_DIRECT3D
&video_out_direct3d_shaders,
&video_out_direct3d,
#endif
#ifdef CONFIG_DIRECTX
&video_out_directx,
#endif
#ifdef CONFIG_GL_COCOA
&video_out_gl,
#endif
#ifdef CONFIG_COREVIDEO
&video_out_corevideo,
#endif
#if CONFIG_VDPAU
&video_out_vdpau,
#endif
#ifdef CONFIG_XV
&video_out_xv,
#endif
#ifdef CONFIG_GL
&video_out_gl3,
#if !defined CONFIG_GL_COCOA
&video_out_gl,
#endif
#endif
#ifdef CONFIG_X11
&video_out_x11,
#endif
#ifdef CONFIG_CACA
&video_out_caca,
#endif
&video_out_null,
// should not be auto-selected
#ifdef CONFIG_SHAREDBUFFER
&video_out_sharedbuffer,
#endif
#ifdef CONFIG_DIRECTFB
// vo directfb can call exit() if initialization fails
&video_out_directfb,
#endif
&video_out_image,
#ifdef CONFIG_X11
#ifdef CONFIG_GL
&video_out_gl_nosw,
#endif
#endif
NULL
};
static int vo_preinit(struct vo *vo, char *arg)
{
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));
int r = m_config_parse_suboptions(cfg, n, arg);
if (r < 0)
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);
}
// Return -1 if driver appears not to support a draw_image interface,
// 0 otherwise (whether the driver actually drew something or not).
int vo_draw_image(struct vo *vo, struct mp_image *mpi, double pts)
{
if (!vo->config_ok)
return 0;
if (vo->driver->buffer_frames) {
vo->driver->draw_image(vo, mpi, pts);
return 0;
}
vo->frame_loaded = true;
vo->next_pts = pts;
// Guaranteed to support at least DRAW_IMAGE later
if (vo->driver->is_new) {
vo->waiting_mpi = mpi;
return 0;
}
if (vo_control(vo, VOCTRL_DRAW_IMAGE, mpi) == VO_NOTIMPL)
return -1;
return 0;
}
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->redrawing = true;
return 0;
}
return -1;
}
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;
}
int vo_draw_frame(struct vo *vo, uint8_t *src[])
{
assert(!vo->driver->is_new);
if (!vo->config_ok)
return 0;
return old_vo_draw_frame(vo, src);
}
int vo_draw_slice(struct vo *vo, uint8_t *src[], int stride[], int w, int h, int x, int y)
{
return vo->driver->draw_slice(vo, src, stride, w, h, x, y);
}
void vo_new_frame_imminent(struct vo *vo)
{
if (!vo->driver->is_new)
return;
if (vo->driver->buffer_frames)
vo_control(vo, VOCTRL_NEWFRAME, NULL);
else {
vo_control(vo, VOCTRL_DRAW_IMAGE, vo->waiting_mpi);
vo->waiting_mpi = NULL;
}
}
void vo_draw_osd(struct vo *vo, struct osd_state *osd)
{
if (!vo->config_ok)
return;
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->driver->check_events(vo);
}
void vo_seek_reset(struct vo *vo)
{
vo_control(vo, VOCTRL_RESET, NULL);
vo->frame_loaded = false;
vo->hasframe = false;
}
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);
}
void list_video_out(void)
{
int i = 0;
mp_tmsg(MSGT_CPLAYER, MSGL_INFO, "Available video output drivers:\n");
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_OUTPUTS\n");
while (video_out_drivers[i]) {
const vo_info_t *info = video_out_drivers[i++]->info;
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\t%s\t%s\n", info->short_name, info->name);
}
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
}
struct vo *init_best_video_out(struct MPOpts *opts,
struct mp_fifo *key_fifo,
struct input_ctx *input_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,
.input_ctx = input_ctx,
.event_fd = -1,
.registered_fd = -1,
.window_title = talloc_strdup(vo, ""),
};
// first try the preferred drivers, with their optional subdevice param:
if (vo_list && vo_list[0])
while (vo_list[0][0]) {
char *name = strdup(vo_list[0]);
vo_subdevice = strchr(name,':');
if (!strcmp(name, "pgm"))
mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The pgm video output driver has been replaced by -vo pnm:pgmyuv.\n");
if (!strcmp(name, "md5"))
mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The md5 video output driver has been replaced by -vo md5sum.\n");
if (vo_subdevice) {
vo_subdevice[0] = 0;
++vo_subdevice;
}
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 (!strcmp(info->short_name, name)) {
// name matches, try it
*vo = initial_values;
vo->driver = video_driver;
if (!vo_preinit(vo, vo_subdevice)) {
free(name);
return vo; // success!
}
talloc_free_children(vo);
}
}
// continue...
free(name);
++vo_list;
if (!(vo_list[0]))
return NULL; // do NOT fallback to others
}
// now try the rest...
vo_subdevice = NULL;
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, vo_subdevice))
return vo; // success!
talloc_free_children(vo);
}
free(vo);
return NULL;
}
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)
{
struct MPOpts *opts = vo->opts;
panscan_init(vo);
aspect_save_orig(vo, width, height);
aspect_save_prescale(vo, d_width, d_height);
if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
aspect(vo, &d_width, &d_height, A_NOZOOM);
vo->dx = (int)(opts->vo_screenwidth - d_width) / 2;
vo->dy = (int)(opts->vo_screenheight - d_height) / 2;
geometry(&vo->dx, &vo->dy, &d_width, &d_height,
opts->vo_screenwidth, opts->vo_screenheight);
geometry_xy_changed |= xinerama_screen >= 0;
vo->dx += xinerama_x;
vo->dy += xinerama_y;
vo->dwidth = d_width;
vo->dheight = d_height;
}
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;
}
/**
* \brief helper function for the kind of panscan-scaling that needs a source
* and destination rectangle like Direct3D and VDPAU
*/
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.
* Can be extended to take future cropping support into account.
*
* \param crop specifies the cropping border size in the left, right, top and bottom members, may be NULL
* \param borders the border values as e.g. EOSD (ASS) and properly placed DVD highlight support requires,
* may be NULL and only left and top are currently valid.
*/
void calc_src_dst_rects(struct vo *vo, int src_width, int src_height,
struct vo_rect *src, struct vo_rect *dst,
struct vo_rect *borders, const struct vo_rect *crop)
{
static const struct vo_rect no_crop = {0, 0, 0, 0, 0, 0};
int scaled_width = 0;
int scaled_height = 0;
if (!crop) crop = &no_crop;
src_width -= crop->left + crop->right;
src_height -= crop->top + crop->bottom;
if (src_width < 2) src_width = 2;
if (src_height < 2) src_height = 2;
dst->left = 0; dst->right = vo->dwidth;
dst->top = 0; dst->bottom = vo->dheight;
src->left = 0; src->right = src_width;
src->top = 0; src->bottom = src_height;
if (borders) {
borders->left = 0; borders->top = 0;
}
if (aspect_scaling()) {
aspect(vo, &scaled_width, &scaled_height, A_WINZOOM);
panscan_calc_windowed(vo);
scaled_width += vo->panscan_x;
scaled_height += vo->panscan_y;
if (borders) {
borders->left = (vo->dwidth - scaled_width ) / 2;
borders->top = (vo->dheight - scaled_height) / 2;
}
src_dst_split_scaling(src_width, vo->dwidth, scaled_width,
&src->left, &src->right, &dst->left, &dst->right);
src_dst_split_scaling(src_height, vo->dheight, scaled_height,
&src->top, &src->bottom, &dst->top, &dst->bottom);
}
src->left += crop->left; src->right += crop->left;
src->top += crop->top; src->bottom += crop->top;
src->width = src->right - src->left;
src->height = src->bottom - src->top;
dst->width = dst->right - dst->left;
dst->height = dst->bottom - dst->top;
}
// 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)
{
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 (!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(cmd_str));
}
#if defined(CONFIG_FBDEV) || defined(CONFIG_VESA)
/* Borrowed from vo_fbdev.c
Monitor ranges related functions*/
char *monitor_hfreq_str = NULL;
char *monitor_vfreq_str = NULL;
char *monitor_dotclock_str = NULL;
float range_max(range_t *r)
{
float max = 0;
for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
if (max < r->max) max = r->max;
return max;
}
int in_range(range_t *r, float f)
{
for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
if (f >= r->min && f <= r->max)
return 1;
return 0;
}
range_t *str2range(char *s)
{
float tmp_min, tmp_max;
char *endptr = s; // to start the loop
range_t *r = NULL;
int i;
if (!s)
return NULL;
for (i = 0; *endptr; i++) {
if (*s == ',')
goto out_err;
if (!(r = realloc(r, sizeof(*r) * (i + 2)))) {
mp_msg(MSGT_GLOBAL, MSGL_WARN,"can't realloc 'r'\n");
return NULL;
}
tmp_min = strtod(s, &endptr);
if (*endptr == 'k' || *endptr == 'K') {
tmp_min *= 1000.0;
endptr++;
} else if (*endptr == 'm' || *endptr == 'M') {
tmp_min *= 1000000.0;
endptr++;
}
if (*endptr == '-') {
tmp_max = strtod(endptr + 1, &endptr);
if (*endptr == 'k' || *endptr == 'K') {
tmp_max *= 1000.0;
endptr++;
} else if (*endptr == 'm' || *endptr == 'M') {
tmp_max *= 1000000.0;
endptr++;
}
if (*endptr != ',' && *endptr)
goto out_err;
} else if (*endptr == ',' || !*endptr) {
tmp_max = tmp_min;
} else
goto out_err;
r[i].min = tmp_min;
r[i].max = tmp_max;
if (r[i].min < 0 || r[i].max < 0)
goto out_err;
s = endptr + 1;
}
r[i].min = r[i].max = -1;
return r;
out_err:
free(r);
return NULL;
}
/* Borrowed from vo_fbdev.c END */
#endif
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