mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 22:36:33 +00:00
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Copyright (C) 2012 Collabora Ltd.
|
|
* Author : Edward Hervey <edward@collabora.com>
|
|
*
|
|
* 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
#ifndef __GST_JPEG_DEC_H__
|
|
#define __GST_JPEG_DEC_H__
|
|
|
|
|
|
#include <setjmp.h>
|
|
#include <gst/gst.h>
|
|
#include <gst/video/video.h>
|
|
#include <gst/video/gstvideodecoder.h>
|
|
#include <gst/base/gstadapter.h>
|
|
|
|
/* this is a hack hack hack to get around jpeglib header bugs... */
|
|
#ifdef HAVE_STDLIB_H
|
|
# undef HAVE_STDLIB_H
|
|
#endif
|
|
#include <stdio.h>
|
|
#include <jpeglib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_JPEG_DEC \
|
|
(gst_jpeg_dec_get_type())
|
|
#define GST_JPEG_DEC(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_DEC,GstJpegDec))
|
|
#define GST_JPEG_DEC_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_DEC,GstJpegDecClass))
|
|
#define GST_IS_JPEG_DEC(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_DEC))
|
|
#define GST_IS_JPEG_DEC_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_DEC))
|
|
|
|
typedef struct _GstJpegDec GstJpegDec;
|
|
typedef struct _GstJpegDecClass GstJpegDecClass;
|
|
|
|
struct GstJpegDecErrorMgr {
|
|
struct jpeg_error_mgr pub; /* public fields */
|
|
jmp_buf setjmp_buffer;
|
|
};
|
|
|
|
struct GstJpegDecSourceMgr {
|
|
struct jpeg_source_mgr pub; /* public fields */
|
|
GstJpegDec *dec;
|
|
};
|
|
|
|
/* Can't use GstBaseTransform, because GstBaseTransform
|
|
* doesn't handle the N buffers in, 1 buffer out case,
|
|
* but only the 1-in 1-out case */
|
|
struct _GstJpegDec {
|
|
GstVideoDecoder decoder;
|
|
|
|
/* negotiated state */
|
|
GstVideoCodecState *input_state;
|
|
GstVideoCodecFrame *current_frame;
|
|
GstMapInfo current_frame_map;
|
|
|
|
/* parse state */
|
|
gboolean saw_header;
|
|
gint parse_entropy_len;
|
|
gint parse_resync;
|
|
|
|
/* properties */
|
|
gint idct_method;
|
|
gint max_errors; /* ATOMIC */
|
|
|
|
/* current error (the message is the debug message) */
|
|
gchar *error_msg;
|
|
int error_line;
|
|
const gchar *error_func;
|
|
|
|
/* number of errors since start or last successfully decoded image */
|
|
guint error_count;
|
|
|
|
struct jpeg_decompress_struct cinfo;
|
|
struct GstJpegDecErrorMgr jerr;
|
|
struct GstJpegDecSourceMgr jsrc;
|
|
|
|
/* arrays for indirect decoding */
|
|
gboolean idr_width_allocated;
|
|
guchar *idr_y[16],*idr_u[16],*idr_v[16];
|
|
/* current (parsed) image size */
|
|
guint rem_img_len;
|
|
};
|
|
|
|
struct _GstJpegDecClass {
|
|
GstVideoDecoderClass decoder_class;
|
|
};
|
|
|
|
GType gst_jpeg_dec_get_type(void);
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __GST_JPEG_DEC_H__ */
|