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7e8050728a
This is a rewrite of the pool negotiation and configuration. Direct to output decoding is now achieved by configuring the pool using video-alignment. This removes copies when dealing with any elements that supports VideoAlignment, and enable usage of generic video buffer pool, XVImagePool and GLPool. It drops the crop meta implementation for now. https://bugzilla.gnome.org/show_bug.cgi?id=735379
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_MPEG2DEC_H__
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#define __GST_MPEG2DEC_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideodecoder.h>
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#include <mpeg2.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MPEG2DEC \
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(gst_mpeg2dec_get_type())
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#define GST_MPEG2DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG2DEC,GstMpeg2dec))
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#define GST_MPEG2DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG2DEC,GstMpeg2decClass))
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#define GST_IS_MPEG2DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG2DEC))
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#define GST_IS_MPEG2DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG2DEC))
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#define MPEG_TIME_TO_GST_TIME(time) ((time) == -1 ? -1 : ((time) * (GST_MSECOND/10)) / G_GINT64_CONSTANT(9))
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#define GST_TIME_TO_MPEG_TIME(time) ((time) == -1 ? -1 : ((time) * G_GINT64_CONSTANT(9)) / (GST_MSECOND/10))
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typedef struct _GstMpeg2dec GstMpeg2dec;
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typedef struct _GstMpeg2decClass GstMpeg2decClass;
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typedef enum
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{
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MPEG2DEC_DISC_NONE = 0,
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MPEG2DEC_DISC_NEW_PICTURE,
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MPEG2DEC_DISC_NEW_KEYFRAME
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} DiscontState;
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struct _GstMpeg2dec {
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GstVideoDecoder element;
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mpeg2dec_t *decoder;
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const mpeg2_info_t *info;
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/* Buffer lifetime management */
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GList *buffers;
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/* FIXME This should not be necessary. It is used to prevent image
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* corruption when the parser does not behave the way it should.
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* See https://bugzilla.gnome.org/show_bug.cgi?id=674238
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*/
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DiscontState discont_state;
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/* video state */
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GstVideoCodecState *input_state;
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GstVideoInfo decoded_info;
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GstVideoAlignment valign;
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GstBufferPool * downstream_pool;
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gboolean need_alignment;
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guint8 *dummybuf[4];
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};
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struct _GstMpeg2decClass {
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GstVideoDecoderClass parent_class;
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};
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GType gst_mpeg2dec_get_type(void);
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G_END_DECLS
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#endif /* __GST_MPEG2DEC_H__ */
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