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/* GStreamer DVD Sub-Picture Unit
* Copyright (C) 2007 Fluendo S.A. <info@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_DVD_SPU_H__
#define __GST_DVD_SPU_H__
#include <gst/gst.h>
#include "gstspu-common.h"
#include "gstspu-vobsub.h"
#include "gstspu-pgs.h"
G_BEGIN_DECLS
#define GST_TYPE_DVD_SPU \
(gst_dvd_spu_get_type())
#define GST_DVD_SPU(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVD_SPU,GstDVDSpu))
#define GST_DVD_SPU_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVD_SPU,GstDVDSpuClass))
#define GST_IS_DVD_SPU(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVD_SPU))
#define GST_IS_DVD_SPU_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVD_SPU))
#define DVD_SPU_LOCK(s) g_mutex_lock (&(s)->spu_lock);
#define DVD_SPU_UNLOCK(s) g_mutex_unlock (&(s)->spu_lock);
typedef struct _GstDVDSpuClass GstDVDSpuClass;
typedef enum SpuStateFlags SpuStateFlags;
typedef enum SpuInputType SpuInputType;
typedef struct SpuPacket SpuPacket;
enum SpuInputType {
SPU_INPUT_TYPE_NONE = 0x00,
SPU_INPUT_TYPE_VOBSUB = 0x01,
SPU_INPUT_TYPE_PGS = 0x02
};
enum SpuStateFlags {
SPU_STATE_NONE = 0x00,
/* Flags cleared on a flush */
SPU_STATE_DISPLAY = 0x01,
SPU_STATE_FORCED_DSP = 0x02,
SPU_STATE_STILL_FRAME = 0x04,
/* Persistent flags */
SPU_STATE_FORCED_ONLY = 0x100
};
#define SPU_STATE_FLAGS_MASK (0xff)
struct SpuState {
GstClockTime next_ts; /* Next event TS in running time */
SpuStateFlags flags;
GstVideoInfo info;
guint32 *comp_bufs[3]; /* Compositing buffers for U+V & A */
guint16 comp_left;
guint16 comp_right;
SpuVobsubState vobsub;
SpuPgsState pgs;
};
/* Structure used to store the queue of pending SPU packets. The start_ts is
* stored in running time...
* Also used to carry in-band events so they remain serialised properly */
struct SpuPacket {
GstClockTime event_ts;
GstBuffer *buf;
GstEvent *event;
};
struct _GstDVDSpu {
GstElement element;
GstPad *videosinkpad;
GstPad *subpic_sinkpad;
GstPad *srcpad;
/* Mutex to protect state we access from different chain funcs */
GMutex spu_lock;
GstSegment video_seg;
GstSegment subp_seg;
SpuState spu_state;
SpuInputType spu_input_type;
/* GQueue of SpuBuf structures */
GQueue *pending_spus;
/* Accumulator for collecting partial SPU buffers until they're complete */
GstBuffer *partial_spu;
/* Store either a reference or a copy of the last video frame for duplication
* during still-frame conditions */
GstBuffer *ref_frame;
/* Buffer to push after handling a DVD event, if any */
GstBuffer *pending_frame;
};
struct _GstDVDSpuClass {
GstElementClass parent_class;
};
GType gst_dvd_spu_get_type (void);
G_END_DECLS
#endif /* __GST_DVD_SPU_H__ */
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