playback.h

本程序使用gstreamer实现音视频播放,。

////////////////////////////////////////////////////////////////////////////////////////////////
//remark: 
////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef PLAYBACK_H
#define PLAYBACK_H



//#include "info.h"
#include <gst/gst.h>
#include <gst/interfaces/colorbalance.h>
#include <gst/interfaces/xoverlay.h>


#define FORWARD_OFFSET       60	
#define BACKWARD_OFFSET     -15 

#define VOLUME_SUB_OFFSET   -8
#define VOLUME_ADD_OFFSET   8

#define GST_STOP 	0
#define GST_PLAY 	1
#define GST_PAUSE 	2

#define DEBUG_GST
//#define GET_CAPS
//#define SET_VIDEO_PARA
//#define PLAY_STATE
//#define FORWARD_BACKWARD
//#define GST_VOLUME

#ifdef DEBUG_GST
static gboolean check_other_function(gchar *filename);
#endif

void set_video_brightness();
void set_video_contrast();
void set_video_saturation();
void set_video_hue();

void adjust_volume_add();
void adjust_volume_sub();
////////////////////////////////////////////////////////////////////////
//for caps.
typedef enum {
	INFO_TITLE,
	INFO_ARTIST,
	INFO_YEAR,
	INFO_ALBUM,
	INFO_DURATION,
	INFO_TRACK_NUMBER,
	/* Video */
	INFO_HAS_VIDEO,
	INFO_DIMENSION_X,
	INFO_DIMENSION_Y,
	INFO_VIDEO_BITRATE,
	INFO_VIDEO_CODEC,
	INFO_FPS,
	/* Audio */
	INFO_HAS_AUDIO,
	INFO_AUDIO_BITRATE,
	INFO_AUDIO_CODEC,
	INFO_AUDIO_SAMPLE_RATE,
	INFO_AUDIO_CHANNELS
} MetadataType;

typedef enum {
	USE_TYPE_VIDEO,
	USE_TYPE_AUDIO,
	USE_TYPE_CAPTURE,
	USE_TYPE_METADATA
} UseType;


////////////////////////////////////////////////////////////////////////
//for volume
// Audio-out functions
typedef enum {
	AUDIO_SOUND_STEREO,
	AUDIO_SOUND_4CHANNEL,
	AUDIO_SOUND_41CHANNEL,
	AUDIO_SOUND_5CHANNEL,
	AUDIO_SOUND_51CHANNEL,
	AUDIO_SOUND_AC3PASSTHRU
} VideoAudioOutType;

////////////////////////////////////////////////////////////////////////
//for gstreamer playback.
typedef struct GstAudioVideo
{
  gint play_state;		//0->stop, 1->play, 2->pause.
  gint64 stream_length;
  gint64 cur_time;
  gfloat cur_position;
  UseType use_type;
  gboolean media_has_video;
  gboolean media_has_audio;
  GstTagList *tagcache;
  GstTagList *audiotags;
  GstTagList *videotags;
  GstElement *g_pipe;
  GstElement *videosink;
  GMutex *lock;
  GstColorBalance *balance;
  GstXOverlay *xoverlay; /* protect with lock */

  VideoAudioOutType speakersetup;
  gboolean  uses_fakesink;
  
  gint video_width;
  gint video_height;
}GstAudioVideo;

//GstAudioVideo media;



////////////////////////////////////////////////////////////////////////
//for video para.
typedef enum {
	VIDEO_BRIGHTNESS,
	VIDEO_CONTRAST,
	VIDEO_SATURATION,
	VIDEO_HUE
} LocalVideoProperty;



#endif