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* Interplay MVE muxer plugin for GStreamer
* Copyright (C) 2006 Jens Granseuer <>
* 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
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
#ifndef __GST_MVE_MUX_H__
#define __GST_MVE_MUX_H__
#include <gst/gst.h>
#define GST_TYPE_MVE_MUX \
#define GST_MVE_MUX(obj) \
#define GST_MVE_MUX_CLASS(klass) \
#define GST_IS_MVE_MUX(obj) \
#define GST_IS_MVE_MUX_CLASS(obj) \
typedef struct _GstMveMux GstMveMux;
typedef struct _GstMveMuxClass GstMveMuxClass;
struct _GstMveMux {
GstElement element;
GMutex *lock;
/* pads */
GstPad *source;
GstPad *videosink;
GstPad *audiosink;
gboolean audio_pad_connected;
gboolean audio_pad_eos;
gboolean video_pad_connected;
gboolean video_pad_eos;
guint64 stream_offset;
/* audio stream time, really */
GstClockTime stream_time;
guint timer;
gint state;
/* ticks per frame */
GstClockTime frame_duration;
/* video stream properties */
guint16 width, height;
guint16 screen_width, screen_height;
/* bits per pixel */
guint8 bpp;
/* previous frames */
GstBuffer *last_frame;
GstBuffer *second_last_frame;
/* number of encoded frames */
guint16 video_frames;
/* palette handling */
gboolean pal_changed;
guint16 pal_first_color;
guint16 pal_colors;
/* whether to use expensive opcodes */
gboolean quick_encoding;
/* audio stream properties */
/* bits per sample */
guint8 bps;
guint32 rate;
guint8 channels;
gboolean compression;
/* current audio stream time */
GstClockTime next_ts;
/* maximum audio time we know about */
GstClockTime max_ts;
/* sample bytes per frame */
guint16 spf;
/* number of frames to use for audio lead-in */
guint16 lead_frames;
/* number of encoded frames */
guint16 audio_frames;
/* current chunk */
guint8 *chunk_code_map;
GByteArray *chunk_video;
GByteArray *chunk_audio;
gboolean chunk_has_palette;
gboolean chunk_has_audio;
/* buffers for incoming data */
GQueue *audio_buffer;
GQueue *video_buffer;
struct _GstMveMuxClass {
GstElementClass parent_class;
GType gst_mve_mux_get_type (void);
GstFlowReturn mve_encode_frame8 (GstMveMux * mve,
GstBuffer * frame, const guint32 * palette, guint16 max_data);
GstFlowReturn mve_encode_frame16 (GstMveMux * mve,
GstBuffer * frame, guint16 max_data);
gint mve_compress_audio (guint8 * dest,
const guint8 * src, guint16 len, guint8 channels);
#endif /* __GST_MVE_MUX_H__ */