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52c71352e0
Specifically, when needing more data, do not rescan from start next time around, but resume from last position. See also #583047.
134 lines
3.3 KiB
C
134 lines
3.3 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_JPEG_DEC_H__
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#define __GST_JPEG_DEC_H__
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#include <setjmp.h>
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#include <gst/gst.h>
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#include <gst/video/video.h>
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/* this is a hack hack hack to get around jpeglib header bugs... */
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#ifdef HAVE_STDLIB_H
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# undef HAVE_STDLIB_H
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#endif
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#include <stdio.h>
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#include <jpeglib.h>
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G_BEGIN_DECLS
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#define GST_TYPE_JPEG_DEC \
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(gst_jpeg_dec_get_type())
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#define GST_JPEG_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_DEC,GstJpegDec))
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#define GST_JPEG_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_DEC,GstJpegDecClass))
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#define GST_IS_JPEG_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_DEC))
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#define GST_IS_JPEG_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_DEC))
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typedef struct _GstJpegDec GstJpegDec;
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typedef struct _GstJpegDecClass GstJpegDecClass;
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struct GstJpegDecErrorMgr {
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struct jpeg_error_mgr pub; /* public fields */
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jmp_buf setjmp_buffer;
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};
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struct GstJpegDecSourceMgr {
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struct jpeg_source_mgr pub; /* public fields */
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GstJpegDec *dec;
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};
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/* Can't use GstBaseTransform, because GstBaseTransform
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* doesn't handle the N buffers in, 1 buffer out case,
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* but only the 1-in 1-out case */
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struct _GstJpegDec {
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GstElement element;
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/* pads */
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GstPad *sinkpad;
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GstPad *srcpad;
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GstBuffer *tempbuf;
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/* TRUE if each input buffer contains a whole jpeg image */
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gboolean packetized;
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/* the (expected) timestamp of the next frame */
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guint64 next_ts;
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GstSegment segment;
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/* TRUE if the next output buffer should have the DISCONT flag set */
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gboolean discont;
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/* QoS stuff *//* with LOCK */
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gdouble proportion;
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GstClockTime earliest_time;
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GstClockTime qos_duration;
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/* video state */
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gint framerate_numerator;
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gint framerate_denominator;
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/* negotiated state */
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gint caps_framerate_numerator;
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gint caps_framerate_denominator;
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gint caps_width;
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gint caps_height;
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gint outsize;
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gint clrspc;
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gint offset[3];
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gint stride;
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gint inc;
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/* parse state */
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gint parse_offset;
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gint parse_entropy_len;
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gint parse_resync;
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/* properties */
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gint idct_method;
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struct jpeg_decompress_struct cinfo;
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struct GstJpegDecErrorMgr jerr;
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struct GstJpegDecSourceMgr jsrc;
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/* arrays for indirect decoding */
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gboolean idr_width_allocated;
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guchar *idr_y[16],*idr_u[16],*idr_v[16];
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};
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struct _GstJpegDecClass {
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GstElementClass parent_class;
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};
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GType gst_jpeg_dec_get_type(void);
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G_END_DECLS
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#endif /* __GST_JPEG_DEC_H__ */
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