| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * |
| * 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/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 { |
| GstElement element; |
| |
| /* pads */ |
| GstPad *sinkpad; |
| GstPad *srcpad; |
| |
| GstAdapter *adapter; |
| |
| guint8 *cur_buf; |
| |
| /* TRUE if each input buffer contains a whole jpeg image */ |
| gboolean packetized; |
| |
| /* the (expected) timestamp of the next frame */ |
| guint64 next_ts; |
| |
| GstSegment segment; |
| |
| /* TRUE if the next output buffer should have the DISCONT flag set */ |
| gboolean discont; |
| |
| /* QoS stuff *//* with LOCK */ |
| gdouble proportion; |
| GstClockTime earliest_time; |
| GstClockTime qos_duration; |
| |
| /* input state */ |
| gint in_fps_n; |
| gint in_fps_d; |
| |
| /* negotiated output state */ |
| GstBufferPool *pool; |
| GstVideoInfo info; |
| GstClockTime duration; |
| |
| gint clrspc; |
| |
| /* parse state */ |
| gint parse_offset; |
| 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; |
| |
| /* number of successfully decoded images since start */ |
| guint good_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 { |
| GstElementClass parent_class; |
| }; |
| |
| GType gst_jpeg_dec_get_type(void); |
| |
| |
| G_END_DECLS |
| |
| |
| #endif /* __GST_JPEG_DEC_H__ */ |