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video.c
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///
/// @file video.c @brief Video module
///
/// Copyright (c) 2009 - 2015 by Johns. All Rights Reserved.
///
/// Contributor(s):
///
/// License: AGPLv3
///
/// This program is free software: you can redistribute it and/or modify
/// it under the terms of the GNU Affero General Public License as
/// published by the Free Software Foundation, either version 3 of the
/// License.
///
/// This program 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 Affero General Public License for more details.
///
/// $Id$
//////////////////////////////////////////////////////////////////////////////
///
/// @defgroup Video The video module.
///
/// This module contains all video rendering functions.
///
/// @todo disable screen saver support
///
/// Uses Xlib where it is needed for VA-API or vdpau. XCB is used for
/// everything else.
///
/// - X11
/// - OpenGL rendering
/// - OpenGL rendering with GLX texture-from-pixmap
/// - Xrender rendering
///
/// @todo FIXME: use vaErrorStr for all VA-API errors.
///
#define USE_XLIB_XCB ///< use xlib/xcb backend
#define noUSE_SCREENSAVER ///< support disable screensaver
#define USE_AUTOCROP ///< compile auto-crop support
#define USE_GRAB ///< experimental grab code
#define noUSE_GLX ///< outdated GLX code
#define USE_DOUBLEBUFFER ///< use GLX double buffers
//#define USE_VAAPI ///< enable vaapi support
//#define USE_VDPAU ///< enable vdpau support
//#define USE_BITMAP ///< use vdpau bitmap surface
//#define AV_INFO ///< log a/v sync informations
#ifndef AV_INFO_TIME
#define AV_INFO_TIME (50 * 60) ///< a/v info every minute
#endif
#define USE_VIDEO_THREAD ///< run decoder in an own thread
//#define USE_VIDEO_THREAD2 ///< run decoder+display in own threads
#include <sys/time.h>
#include <sys/shm.h>
#include <sys/ipc.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include <libintl.h>
#define _(str) gettext(str) ///< gettext shortcut
#define _N(str) str ///< gettext_noop shortcut
#ifdef USE_VIDEO_THREAD
#ifndef __USE_GNU
#define __USE_GNU
#endif
#include <pthread.h>
#include <time.h>
#include <signal.h>
#ifndef HAVE_PTHREAD_NAME
/// only available with newer glibc
#define pthread_setname_np(thread, name)
#endif
#endif
#ifdef USE_XLIB_XCB
#include <X11/Xlib-xcb.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <xcb/xcb.h>
//#include <xcb/bigreq.h>
#ifdef xcb_USE_GLX
#include <xcb/glx.h>
#endif
//#include <xcb/randr.h>
#ifdef USE_SCREENSAVER
#include <xcb/screensaver.h>
#include <xcb/dpms.h>
#endif
//#include <xcb/shm.h>
//#include <xcb/xv.h>
//#include <xcb/xcb_image.h>
//#include <xcb/xcb_event.h>
//#include <xcb/xcb_atom.h>
#include <xcb/xcb_icccm.h>
#ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
#include <xcb/xcb_ewmh.h>
#else // compatibility hack for old xcb-util
/**
* @brief Action on the _NET_WM_STATE property
*/
typedef enum
{
/* Remove/unset property */
XCB_EWMH_WM_STATE_REMOVE = 0,
/* Add/set property */
XCB_EWMH_WM_STATE_ADD = 1,
/* Toggle property */
XCB_EWMH_WM_STATE_TOGGLE = 2
} xcb_ewmh_wm_state_action_t;
#endif
#endif
#ifdef USE_GLX
#include <GL/gl.h> // For GL_COLOR_BUFFER_BIT
#include <GL/glx.h>
// only for gluErrorString
#include <GL/glu.h>
#endif
#ifdef USE_VAAPI
#include <va/va_x11.h>
#if VA_CHECK_VERSION(0,33,99)
#include <va/va_vpp.h>
#endif
#ifdef USE_GLX
#include <va/va_glx.h>
#endif
#ifndef VA_SURFACE_ATTRIB_SETTABLE
/// make source compatible with stable libva
#define vaCreateSurfaces(d, f, w, h, s, ns, a, na) \
vaCreateSurfaces(d, w, h, f, ns, s)
#endif
#endif
#ifdef USE_VDPAU
#include <vdpau/vdpau_x11.h>
#include <libavcodec/vdpau.h>
#endif
#include <libavcodec/avcodec.h>
// support old ffmpeg versions <1.0
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,18,102)
#define AVCodecID CodecID
#define AV_CODEC_ID_H263 CODEC_ID_H263
#define AV_CODEC_ID_H264 CODEC_ID_H264
#define AV_CODEC_ID_MPEG1VIDEO CODEC_ID_MPEG1VIDEO
#define AV_CODEC_ID_MPEG2VIDEO CODEC_ID_MPEG2VIDEO
#define AV_CODEC_ID_MPEG4 CODEC_ID_MPEG4
#define AV_CODEC_ID_VC1 CODEC_ID_VC1
#define AV_CODEC_ID_WMV3 CODEC_ID_WMV3
#endif
#include <libavcodec/vaapi.h>
#include <libavutil/pixdesc.h>
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54,86,100)
///
/// ffmpeg version 1.1.1 calls get_format with zero width and height
/// for H264 codecs.
/// since version 1.1.3 get_format is called twice.
/// ffmpeg 1.2 still buggy
///
#define FFMPEG_BUG1_WORKAROUND ///< get_format bug workaround
#endif
#include "iatomic.h" // portable atomic_t
#include "misc.h"
#include "video.h"
#include "audio.h"
#ifdef USE_XLIB_XCB
//----------------------------------------------------------------------------
// Declarations
//----------------------------------------------------------------------------
///
/// Video resolutions selector.
///
typedef enum _video_resolutions_
{
VideoResolution576i, ///< ...x576 interlaced
VideoResolution720p, ///< ...x720 progressive
VideoResolutionFake1080i, ///< 1280x1080 1440x1080 interlaced
VideoResolution1080i, ///< 1920x1080 interlaced
VideoResolutionMax ///< number of resolution indexs
} VideoResolutions;
///
/// Video deinterlace modes.
///
typedef enum _video_deinterlace_modes_
{
VideoDeinterlaceBob, ///< bob deinterlace
VideoDeinterlaceWeave, ///< weave deinterlace
VideoDeinterlaceTemporal, ///< temporal deinterlace
VideoDeinterlaceTemporalSpatial, ///< temporal spatial deinterlace
VideoDeinterlaceSoftBob, ///< software bob deinterlace
VideoDeinterlaceSoftSpatial, ///< software spatial deinterlace
} VideoDeinterlaceModes;
///
/// Video scaleing modes.
///
typedef enum _video_scaling_modes_
{
VideoScalingNormal, ///< normal scaling
VideoScalingFast, ///< fastest scaling
VideoScalingHQ, ///< high quality scaling
VideoScalingAnamorphic, ///< anamorphic scaling
} VideoScalingModes;
///
/// Video zoom modes.
///
typedef enum _video_zoom_modes_
{
VideoNormal, ///< normal
VideoStretch, ///< stretch to all edges
VideoCenterCutOut, ///< center and cut out
VideoAnamorphic, ///< anamorphic scaled (unsupported)
} VideoZoomModes;
///
/// Video color space conversions.
///
typedef enum _video_color_space_
{
VideoColorSpaceNone, ///< no conversion
VideoColorSpaceBt601, ///< ITU.BT-601 Y'CbCr
VideoColorSpaceBt709, ///< ITU.BT-709 HDTV Y'CbCr
VideoColorSpaceSmpte240 ///< SMPTE-240M Y'PbPr
} VideoColorSpace;
///
/// Video output module structure and typedef.
///
typedef struct _video_module_
{
const char *Name; ///< video output module name
char Enabled; ///< flag output module enabled
/// allocate new video hw decoder
VideoHwDecoder *(*const NewHwDecoder)(VideoStream *);
void (*const DelHwDecoder) (VideoHwDecoder *);
unsigned (*const GetSurface) (VideoHwDecoder *, const AVCodecContext *);
void (*const ReleaseSurface) (VideoHwDecoder *, unsigned);
enum PixelFormat (*const get_format) (VideoHwDecoder *, AVCodecContext *,
const enum PixelFormat *);
void (*const RenderFrame) (VideoHwDecoder *, const AVCodecContext *,
const AVFrame *);
void *(*const GetHwAccelContext)(VideoHwDecoder *);
void (*const SetClock) (VideoHwDecoder *, int64_t);
int64_t(*const GetClock) (const VideoHwDecoder *);
void (*const SetClosing) (const VideoHwDecoder *);
void (*const ResetStart) (const VideoHwDecoder *);
void (*const SetTrickSpeed) (const VideoHwDecoder *, int);
uint8_t *(*const GrabOutput)(int *, int *, int *);
void (*const GetStats) (VideoHwDecoder *, int *, int *, int *, int *);
void (*const SetBackground) (uint32_t);
void (*const SetVideoMode) (void);
void (*const ResetAutoCrop) (void);
/// module display handler thread
void (*const DisplayHandlerThread) (void);
void (*const OsdClear) (void); ///< clear OSD
/// draw OSD ARGB area
void (*const OsdDrawARGB) (int, int, int, int, int, const uint8_t *, int,
int);
void (*const OsdInit) (int, int); ///< initialize OSD
void (*const OsdExit) (void); ///< cleanup OSD
int (*const Init) (const char *); ///< initialize video output module
void (*const Exit) (void); ///< cleanup video output module
} VideoModule;
//----------------------------------------------------------------------------
// Defines
//----------------------------------------------------------------------------
#define CODEC_SURFACES_MAX 31 ///< maximal of surfaces
#define CODEC_SURFACES_DEFAULT 21 ///< default of surfaces
// FIXME: video-xvba only supports 14
#define xCODEC_SURFACES_DEFAULT 14 ///< default of surfaces
#define CODEC_SURFACES_MPEG2 3 ///< 1 decode, up to 2 references
#define CODEC_SURFACES_MPEG4 3 ///< 1 decode, up to 2 references
#define CODEC_SURFACES_H264 21 ///< 1 decode, up to 20 references
#define CODEC_SURFACES_VC1 3 ///< 1 decode, up to 2 references
#define VIDEO_SURFACES_MAX 4 ///< video output surfaces for queue
#define OUTPUT_SURFACES_MAX 4 ///< output surfaces for flip page
//----------------------------------------------------------------------------
// Variables
//----------------------------------------------------------------------------
char VideoIgnoreRepeatPict; ///< disable repeat pict warning
static const char *VideoDriverName; ///< video output device
static Display *XlibDisplay; ///< Xlib X11 display
static xcb_connection_t *Connection; ///< xcb connection
static xcb_colormap_t VideoColormap; ///< video colormap
static xcb_window_t VideoWindow; ///< video window
static xcb_screen_t const *VideoScreen; ///< video screen
static uint32_t VideoBlankTick; ///< blank cursor timer
static xcb_pixmap_t VideoCursorPixmap; ///< blank curosr pixmap
static xcb_cursor_t VideoBlankCursor; ///< empty invisible cursor
static int VideoWindowX; ///< video output window x coordinate
static int VideoWindowY; ///< video outout window y coordinate
static unsigned VideoWindowWidth; ///< video output window width
static unsigned VideoWindowHeight; ///< video output window height
static const VideoModule NoopModule; ///< forward definition of noop module
/// selected video module
static const VideoModule *VideoUsedModule = &NoopModule;
signed char VideoHardwareDecoder = -1; ///< flag use hardware decoder
static char VideoSurfaceModesChanged; ///< flag surface modes changed
/// flag use transparent OSD.
static const char VideoTransparentOsd = 1;
static uint32_t VideoBackground; ///< video background color
static char VideoStudioLevels; ///< flag use studio levels
/// Default deinterlace mode.
static VideoDeinterlaceModes VideoDeinterlace[VideoResolutionMax];
/// Default number of deinterlace surfaces
static const int VideoDeinterlaceSurfaces = 4;
/// Default skip chroma deinterlace flag (VDPAU only).
static char VideoSkipChromaDeinterlace[VideoResolutionMax];
/// Default inverse telecine flag (VDPAU only).
static char VideoInverseTelecine[VideoResolutionMax];
/// Default amount of noise reduction algorithm to apply (0 .. 1000).
static int VideoDenoise[VideoResolutionMax];
/// Default amount of sharpening, or blurring, to apply (-1000 .. 1000).
static int VideoSharpen[VideoResolutionMax];
/// Default cut top and bottom in pixels
static int VideoCutTopBottom[VideoResolutionMax];
/// Default cut left and right in pixels
static int VideoCutLeftRight[VideoResolutionMax];
/// Color space ITU-R BT.601, ITU-R BT.709, ...
static const VideoColorSpace VideoColorSpaces[VideoResolutionMax] = {
VideoColorSpaceBt601, VideoColorSpaceBt709, VideoColorSpaceBt709,
VideoColorSpaceBt709
};
/// Default scaling mode
static VideoScalingModes VideoScaling[VideoResolutionMax];
/// Default audio/video delay
int VideoAudioDelay;
/// Default zoom mode for 4:3
static VideoZoomModes Video4to3ZoomMode;
/// Default zoom mode for 16:9 and others
static VideoZoomModes VideoOtherZoomMode;
static char Video60HzMode; ///< handle 60hz displays
static char VideoSoftStartSync; ///< soft start sync audio/video
static const int VideoSoftStartFrames = 100; ///< soft start frames
static char VideoShowBlackPicture; ///< flag show black picture
static xcb_atom_t WmDeleteWindowAtom; ///< WM delete message atom
static xcb_atom_t NetWmState; ///< wm-state message atom
static xcb_atom_t NetWmStateFullscreen; ///< fullscreen wm-state message atom
#ifdef DEBUG
extern uint32_t VideoSwitch; ///< ticks for channel switch
#endif
extern void AudioVideoReady(int64_t); ///< tell audio video is ready
#ifdef USE_VIDEO_THREAD
static pthread_t VideoThread; ///< video decode thread
static pthread_cond_t VideoWakeupCond; ///< wakeup condition variable
static pthread_mutex_t VideoMutex; ///< video condition mutex
static pthread_mutex_t VideoLockMutex; ///< video lock mutex
#endif
#ifdef USE_VIDEO_THREAD2
static pthread_t VideoDisplayThread; ///< video decode thread
static pthread_cond_t VideoWakeupCond; ///< wakeup condition variable
static pthread_mutex_t VideoDisplayMutex; ///< video condition mutex
static pthread_mutex_t VideoDisplayLockMutex; ///< video lock mutex
#endif
static int OsdConfigWidth; ///< osd configured width
static int OsdConfigHeight; ///< osd configured height
static char OsdShown; ///< flag show osd
static char Osd3DMode; ///< 3D OSD mode
static int OsdWidth; ///< osd width
static int OsdHeight; ///< osd height
static int OsdDirtyX; ///< osd dirty area x
static int OsdDirtyY; ///< osd dirty area y
static int OsdDirtyWidth; ///< osd dirty area width
static int OsdDirtyHeight; ///< osd dirty area height
static int64_t VideoDeltaPTS; ///< FIXME: fix pts
#ifdef USE_SCREENSAVER
static char DPMSDisabled; ///< flag we have disabled dpms
static char EnableDPMSatBlackScreen; ///< flag we should enable dpms at black screen
#endif
//----------------------------------------------------------------------------
// Common Functions
//----------------------------------------------------------------------------
static void VideoThreadLock(void); ///< lock video thread
static void VideoThreadUnlock(void); ///< unlock video thread
static void VideoThreadExit(void); ///< exit/kill video thread
#ifdef USE_SCREENSAVER
static void X11SuspendScreenSaver(xcb_connection_t *, int);
static int X11HaveDPMS(xcb_connection_t *);
static void X11DPMSReenable(xcb_connection_t *);
static void X11DPMSDisable(xcb_connection_t *);
#endif
///
/// Update video pts.
///
/// @param pts_p pointer to pts
/// @param interlaced interlaced flag (frame isn't right)
/// @param frame frame to display
///
/// @note frame->interlaced_frame can't be used for interlace detection
///
static void VideoSetPts(int64_t * pts_p, int interlaced,
const AVCodecContext * video_ctx, const AVFrame * frame)
{
int64_t pts;
int duration;
//
// Get duration for this frame.
// FIXME: using framerate as workaround for av_frame_get_pkt_duration
//
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(56,13,100)
// version for older ffmpeg without framerate
if (video_ctx->time_base.num && video_ctx->time_base.den) {
duration =
(video_ctx->ticks_per_frame * 1000 * video_ctx->time_base.num) /
video_ctx->time_base.den;
} else {
duration = interlaced ? 40 : 20; // 50Hz -> 20ms default
}
Debug(4, "video: %d/%d %" PRIx64 " -> %d\n", video_ctx->time_base.den,
video_ctx->time_base.num, av_frame_get_pkt_duration(frame), duration);
#else
if (video_ctx->framerate.num && video_ctx->framerate.den) {
duration = 1000 * video_ctx->framerate.den / video_ctx->framerate.num;
} else {
duration = interlaced ? 40 : 20; // 50Hz -> 20ms default
}
Debug(4, "video: %d/%d %" PRIx64 " -> %d\n", video_ctx->framerate.den,
video_ctx->framerate.num, av_frame_get_pkt_duration(frame), duration);
#endif
// update video clock
if (*pts_p != (int64_t) AV_NOPTS_VALUE) {
*pts_p += duration * 90;
//Info("video: %s +pts\n", Timestamp2String(*pts_p));
}
//av_opt_ptr(avcodec_get_frame_class(), frame, "best_effort_timestamp");
//pts = frame->best_effort_timestamp;
pts = frame->pkt_pts;
if (pts == (int64_t) AV_NOPTS_VALUE || !pts) {
// libav: 0.8pre didn't set pts
pts = frame->pkt_dts;
}
// libav: sets only pkt_dts which can be 0
if (pts && pts != (int64_t) AV_NOPTS_VALUE) {
// build a monotonic pts
if (*pts_p != (int64_t) AV_NOPTS_VALUE) {
int64_t delta;
delta = pts - *pts_p;
// ignore negative jumps
if (delta > -600 * 90 && delta <= -40 * 90) {
if (-delta > VideoDeltaPTS) {
VideoDeltaPTS = -delta;
Debug(4,
"video: %#012" PRIx64 "->%#012" PRIx64 " delta%+4"
PRId64 " pts\n", *pts_p, pts, pts - *pts_p);
}
return;
}
} else { // first new clock value
AudioVideoReady(pts);
}
if (*pts_p != pts) {
Debug(4,
"video: %#012" PRIx64 "->%#012" PRIx64 " delta=%4" PRId64
" pts\n", *pts_p, pts, pts - *pts_p);
*pts_p = pts;
}
}
}
///
/// Update output for new size or aspect ratio.
///
/// @param input_aspect_ratio video stream aspect
///
static void VideoUpdateOutput(AVRational input_aspect_ratio, int input_width,
int input_height, VideoResolutions resolution, int video_x, int video_y,
int video_width, int video_height, int *output_x, int *output_y,
int *output_width, int *output_height, int *crop_x, int *crop_y,
int *crop_width, int *crop_height)
{
AVRational display_aspect_ratio;
AVRational tmp_ratio;
if (!input_aspect_ratio.num || !input_aspect_ratio.den) {
input_aspect_ratio.num = 1;
input_aspect_ratio.den = 1;
Debug(3, "video: aspect defaults to %d:%d\n", input_aspect_ratio.num,
input_aspect_ratio.den);
}
av_reduce(&input_aspect_ratio.num, &input_aspect_ratio.den,
input_width * input_aspect_ratio.num,
input_height * input_aspect_ratio.den, 1024 * 1024);
// InputWidth/Height can be zero = uninitialized
if (!input_aspect_ratio.num || !input_aspect_ratio.den) {
input_aspect_ratio.num = 1;
input_aspect_ratio.den = 1;
}
display_aspect_ratio.num =
VideoScreen->width_in_pixels * VideoScreen->height_in_millimeters;
display_aspect_ratio.den =
VideoScreen->height_in_pixels * VideoScreen->width_in_millimeters;
display_aspect_ratio = av_mul_q(input_aspect_ratio, display_aspect_ratio);
Debug(3, "video: aspect %d:%d\n", display_aspect_ratio.num,
display_aspect_ratio.den);
*crop_x = VideoCutLeftRight[resolution];
*crop_y = VideoCutTopBottom[resolution];
*crop_width = input_width - VideoCutLeftRight[resolution] * 2;
*crop_height = input_height - VideoCutTopBottom[resolution] * 2;
// FIXME: store different positions for the ratios
tmp_ratio.num = 4;
tmp_ratio.den = 3;
#ifdef DEBUG
fprintf(stderr, "ratio: %d:%d %d:%d\n", input_aspect_ratio.num,
input_aspect_ratio.den, display_aspect_ratio.num,
display_aspect_ratio.den);
#endif
if (!av_cmp_q(input_aspect_ratio, tmp_ratio)) {
switch (Video4to3ZoomMode) {
case VideoNormal:
goto normal;
case VideoStretch:
goto stretch;
case VideoCenterCutOut:
goto center_cut_out;
case VideoAnamorphic:
// FIXME: rest should be done by hardware
goto stretch;
}
}
switch (VideoOtherZoomMode) {
case VideoNormal:
goto normal;
case VideoStretch:
goto stretch;
case VideoCenterCutOut:
goto center_cut_out;
case VideoAnamorphic:
// FIXME: rest should be done by hardware
goto stretch;
}
normal:
*output_x = video_x;
*output_y = video_y;
*output_width =
(video_height * display_aspect_ratio.num + display_aspect_ratio.den -
1) / display_aspect_ratio.den;
*output_height =
(video_width * display_aspect_ratio.den + display_aspect_ratio.num -
1) / display_aspect_ratio.num;
if (*output_width > video_width) {
*output_width = video_width;
*output_y += (video_height - *output_height) / 2;
} else if (*output_height > video_height) {
*output_height = video_height;
*output_x += (video_width - *output_width) / 2;
}
Debug(3, "video: aspect output %dx%d%+d%+d\n", *output_width,
*output_height, *output_x, *output_y);
return;
stretch:
*output_x = video_x;
*output_y = video_y;
*output_width = video_width;
*output_height = video_height;
Debug(3, "video: stretch output %dx%d%+d%+d\n", *output_width,
*output_height, *output_x, *output_y);
return;
center_cut_out:
*output_x = video_x;
*output_y = video_y;
*output_height = video_height;
*output_width = video_width;
*crop_width =
(video_height * display_aspect_ratio.num + display_aspect_ratio.den -
1) / display_aspect_ratio.den;
*crop_height =
(video_width * display_aspect_ratio.den + display_aspect_ratio.num -
1) / display_aspect_ratio.num;
// look which side must be cut
if (*crop_width > video_width) {
int tmp;
*crop_height = input_height - VideoCutTopBottom[resolution] * 2;
// adjust scaling
tmp = ((*crop_width - video_width) * input_width) / (2 * video_width);
// FIXME: round failure?
if (tmp > *crop_x) {
*crop_x = tmp;
}
*crop_width = input_width - *crop_x * 2;
} else if (*crop_height > video_height) {
int tmp;
*crop_width = input_width - VideoCutLeftRight[resolution] * 2;
// adjust scaling
tmp = ((*crop_height - video_height) * input_height)
/ (2 * video_height);
// FIXME: round failure?
if (tmp > *crop_y) {
*crop_y = tmp;
}
*crop_height = input_height - *crop_y * 2;
} else {
*crop_width = input_width - VideoCutLeftRight[resolution] * 2;
*crop_height = input_height - VideoCutTopBottom[resolution] * 2;
}
Debug(3, "video: aspect crop %dx%d%+d%+d\n", *crop_width, *crop_height,
*crop_x, *crop_y);
return;
}
//----------------------------------------------------------------------------
// GLX
//----------------------------------------------------------------------------
#ifdef USE_GLX
static int GlxEnabled; ///< use GLX
static int GlxVSyncEnabled; ///< enable/disable v-sync
static GLXContext GlxSharedContext; ///< shared gl context
static GLXContext GlxContext; ///< our gl context
#ifdef USE_VIDEO_THREAD
static GLXContext GlxThreadContext; ///< our gl context for the thread
#endif
static XVisualInfo *GlxVisualInfo; ///< our gl visual
static GLuint OsdGlTextures[2]; ///< gl texture for OSD
static int OsdIndex; ///< index into OsdGlTextures
///
/// GLX extension functions
///@{
#ifdef GLX_MESA_swap_control
static PFNGLXSWAPINTERVALMESAPROC GlxSwapIntervalMESA;
#endif
#ifdef GLX_SGI_video_sync
static PFNGLXGETVIDEOSYNCSGIPROC GlxGetVideoSyncSGI;
#endif
#ifdef GLX_SGI_swap_control
static PFNGLXSWAPINTERVALSGIPROC GlxSwapIntervalSGI;
#endif
///@}
///
/// GLX check error.
///
static void GlxCheck(void)
{
GLenum err;
if ((err = glGetError()) != GL_NO_ERROR) {
Debug(3, "video/glx: error %d '%s'\n", err, gluErrorString(err));
}
}
///
/// GLX check if a GLX extension is supported.
///
/// @param ext extension to query
/// @returns true if supported, false otherwise
///
static int GlxIsExtensionSupported(const char *ext)
{
const char *extensions;
if ((extensions =
glXQueryExtensionsString(XlibDisplay,
DefaultScreen(XlibDisplay)))) {
const char *s;
int l;
s = strstr(extensions, ext);
l = strlen(ext);
return s && (s[l] == ' ' || s[l] == '\0');
}
return 0;
}
///
/// Setup GLX decoder
///
/// @param width input video textures width
/// @param height input video textures height
/// @param[OUT] textures created and prepared textures
///
static void GlxSetupDecoder(int width, int height, GLuint * textures)
{
int i;
glEnable(GL_TEXTURE_2D); // create 2d texture
glGenTextures(2, textures);
GlxCheck();
for (i = 0; i < 2; ++i) {
glBindTexture(GL_TEXTURE_2D, textures[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA,
GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
}
glDisable(GL_TEXTURE_2D);
GlxCheck();
}
///
/// Render texture.
///
/// @param texture 2d texture
/// @param x window x
/// @param y window y
/// @param width window width
/// @param height window height
///
static inline void GlxRenderTexture(GLuint texture, int x, int y, int width,
int height)
{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f); // no color
glBegin(GL_QUADS); {
glTexCoord2f(1.0f, 1.0f);
glVertex2i(x + width, y + height);
glTexCoord2f(0.0f, 1.0f);
glVertex2i(x, y + height);
glTexCoord2f(0.0f, 0.0f);
glVertex2i(x, y);
glTexCoord2f(1.0f, 0.0f);
glVertex2i(x + width, y);
}
glEnd();
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
}
///
/// Upload OSD texture.
///
/// @param x x coordinate texture
/// @param y y coordinate texture
/// @param width argb image width
/// @param height argb image height
/// @param argb argb image
///
static void GlxUploadOsdTexture(int x, int y, int width, int height,
const uint8_t * argb)
{
// FIXME: use other / faster uploads
// ARB_pixelbuffer_object GL_PIXEL_UNPACK_BUFFER glBindBufferARB()
// glMapBuffer() glUnmapBuffer()
glEnable(GL_TEXTURE_2D); // upload 2d texture
glBindTexture(GL_TEXTURE_2D, OsdGlTextures[OsdIndex]);
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, GL_BGRA,
GL_UNSIGNED_BYTE, argb);
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
}
///
/// GLX initialize OSD.
///
/// @param width osd width
/// @param height osd height
///
static void GlxOsdInit(int width, int height)
{
int i;
#ifdef DEBUG
if (!GlxEnabled) {
Debug(3, "video/glx: %s called without glx enabled\n", __FUNCTION__);
return;
}
#endif
Debug(3, "video/glx: osd init context %p <-> %p\n", glXGetCurrentContext(),
GlxContext);
//
// create a RGBA texture.
//
glEnable(GL_TEXTURE_2D); // create 2d texture(s)
glGenTextures(2, OsdGlTextures);
for (i = 0; i < 2; ++i) {
glBindTexture(GL_TEXTURE_2D, OsdGlTextures[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA,
GL_UNSIGNED_BYTE, NULL);
}
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
}
///
/// GLX cleanup osd.
///
static void GlxOsdExit(void)
{
if (OsdGlTextures[0]) {
glDeleteTextures(2, OsdGlTextures);
OsdGlTextures[0] = 0;
OsdGlTextures[1] = 0;
}
}
///
/// Upload ARGB image to texture.
///
/// @param xi x-coordinate in argb image
/// @param yi y-coordinate in argb image
/// @paran height height in pixel in argb image
/// @paran width width in pixel in argb image
/// @param pitch pitch of argb image
/// @param argb 32bit ARGB image data
/// @param x x-coordinate on screen of argb image
/// @param y y-coordinate on screen of argb image
///
/// @note looked by caller
///
static void GlxOsdDrawARGB(int xi, int yi, int width, int height, int pitch,
const uint8_t * argb, int x, int y)
{
uint8_t *tmp;
#ifdef DEBUG
uint32_t start;
uint32_t end;
#endif
#ifdef DEBUG
if (!GlxEnabled) {
Debug(3, "video/glx: %s called without glx enabled\n", __FUNCTION__);
return;
}
start = GetMsTicks();
Debug(3, "video/glx: osd context %p <-> %p\n", glXGetCurrentContext(),
GlxContext);
#endif
// set glx context
if (!glXMakeCurrent(XlibDisplay, VideoWindow, GlxContext)) {
Error(_("video/glx: can't make glx context current\n"));
return;
}
// FIXME: faster way
tmp = malloc(width * height * 4);
if (tmp) {
int i;
for (i = 0; i < height; ++i) {
memcpy(tmp + i * width * 4, argb + xi * 4 + (i + yi) * pitch,
width * 4);
}
GlxUploadOsdTexture(x, y, width, height, tmp);
glXMakeCurrent(XlibDisplay, None, NULL);
free(tmp);
}
#ifdef DEBUG
end = GetMsTicks();
Debug(3, "video/glx: osd upload %dx%d%+d%+d %dms %d\n", width, height, x,
y, end - start, width * height * 4);
#endif
}
///
/// Clear OSD texture.
///
/// @note looked by caller
///
static void GlxOsdClear(void)
{
void *texbuf;
#ifdef DEBUG
if (!GlxEnabled) {
Debug(3, "video/glx: %s called without glx enabled\n", __FUNCTION__);
return;
}
Debug(3, "video/glx: osd context %p <-> %p\n", glXGetCurrentContext(),
GlxContext);
#endif
// FIXME: any opengl function to clear an area?
// FIXME: if not; use zero buffer
// FIXME: if not; use dirty area
// set glx context
if (!glXMakeCurrent(XlibDisplay, VideoWindow, GlxContext)) {
Error(_("video/glx: can't make glx context current\n"));
return;
}
texbuf = calloc(OsdWidth * OsdHeight, 4);
GlxUploadOsdTexture(0, 0, OsdWidth, OsdHeight, texbuf);
glXMakeCurrent(XlibDisplay, None, NULL);
free(texbuf);
}
///
/// Setup GLX window.
///