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63e0b29291
Right now in parse logic the signature is checked every time the parse function is called, and the whole data is the scanned each and every time, even though the data is scanned in the previous instance. Changing the logic such that, we skip the bytes which are already scanned in the previous instances of parse. This helps in avoiding multiple scan of already scanned data/signature. https://bugzilla.gnome.org/show_bug.cgi?id=737708
72 lines
2 KiB
C
72 lines
2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2012 Collabora Ltd.
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* Author : Edward Hervey <edward@collabora.com>
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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_PNGDEC_H__
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#define __GST_PNGDEC_H__
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#include <gst/gst.h>
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#include <gst/video/gstvideodecoder.h>
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#include <png.h>
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G_BEGIN_DECLS
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#define GST_TYPE_PNGDEC (gst_pngdec_get_type())
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#define GST_PNGDEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PNGDEC,GstPngDec))
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#define GST_PNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PNGDEC,GstPngDecClass))
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#define GST_IS_PNGDEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PNGDEC))
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#define GST_IS_PNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PNGDEC))
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typedef struct _GstPngDec GstPngDec;
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typedef struct _GstPngDecClass GstPngDecClass;
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struct _GstPngDec
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{
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GstVideoDecoder parent;
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GstVideoCodecState *input_state;
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GstVideoCodecState *output_state;
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GstMapInfo current_frame_map;
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GstVideoCodecFrame *current_frame;
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GstFlowReturn ret;
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png_structp png;
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png_infop info;
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png_infop endinfo;
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gint color_type;
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gboolean image_ready;
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gsize read_data;
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};
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struct _GstPngDecClass
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{
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GstVideoDecoderClass parent_class;
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};
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GType gst_pngdec_get_type(void);
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G_END_DECLS
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#endif /* __GST_PNGDEC_H__ */
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