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127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/*
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* Interplay MVE muxer plugin for GStreamer
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* Copyright (C) 2006 Jens Granseuer <jensgr@gmx.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_MVE_MUX_H__
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#define __GST_MVE_MUX_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MVE_MUX \
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(gst_mve_mux_get_type())
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#define GST_MVE_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MVE_MUX,GstMveMux))
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#define GST_MVE_MUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MVE_MUX,GstMveMux))
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#define GST_IS_MVE_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MVE_MUX))
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#define GST_IS_MVE_MUX_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MVE_MUX))
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typedef struct _GstMveMux GstMveMux;
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typedef struct _GstMveMuxClass GstMveMuxClass;
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struct _GstMveMux {
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GstElement element;
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GMutex *lock;
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/* pads */
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GstPad *source;
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GstPad *videosink;
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GstPad *audiosink;
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gboolean audio_pad_connected;
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gboolean audio_pad_eos;
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gboolean video_pad_connected;
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gboolean video_pad_eos;
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guint64 stream_offset;
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/* audio stream time, really */
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GstClockTime stream_time;
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guint timer;
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gint state;
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/* ticks per frame */
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GstClockTime frame_duration;
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/* video stream properties */
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guint16 width, height;
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guint16 screen_width, screen_height;
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/* bits per pixel */
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guint8 bpp;
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/* previous frames */
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GstBuffer *last_frame;
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GstBuffer *second_last_frame;
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/* number of encoded frames */
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guint16 video_frames;
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/* palette handling */
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gboolean pal_changed;
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guint16 pal_first_color;
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guint16 pal_colors;
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/* whether to use expensive opcodes */
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gboolean quick_encoding;
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/* audio stream properties */
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/* bits per sample */
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guint8 bps;
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guint32 rate;
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guint8 channels;
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gboolean compression;
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/* current audio stream time */
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GstClockTime next_ts;
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/* maximum audio time we know about */
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GstClockTime max_ts;
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/* sample bytes per frame */
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guint16 spf;
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/* number of frames to use for audio lead-in */
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guint16 lead_frames;
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/* number of encoded frames */
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guint16 audio_frames;
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/* current chunk */
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guint8 *chunk_code_map;
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GByteArray *chunk_video;
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GByteArray *chunk_audio;
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gboolean chunk_has_palette;
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gboolean chunk_has_audio;
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/* buffers for incoming data */
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GQueue *audio_buffer;
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GQueue *video_buffer;
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};
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struct _GstMveMuxClass {
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GstElementClass parent_class;
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};
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GType gst_mve_mux_get_type (void);
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GstFlowReturn mve_encode_frame8 (GstMveMux * mve,
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GstBuffer * frame, const guint32 * palette, guint16 max_data);
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GstFlowReturn mve_encode_frame16 (GstMveMux * mve,
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GstBuffer * frame, guint16 max_data);
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gint mve_compress_audio (guint8 * dest,
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const guint8 * src, guint16 len, guint8 channels);
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G_END_DECLS
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#endif /* __GST_MVE_MUX_H__ */
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