swfdec/swfdec_video_decoder.h

   1 /* Swfdec
   2  * Copyright (C) 2006-2008 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifndef _SWFDEC_VIDEO_DECODER_H_
  21 #define _SWFDEC_VIDEO_DECODER_H_
  22
  23 #include <swfdec/swfdec_buffer.h>
  24 #include <swfdec/swfdec_renderer.h>
  25
  26 G_BEGIN_DECLS
  27
  28
  29 #define SWFDEC_VIDEO_CODEC_UNDEFINED 0
  30 #define SWFDEC_VIDEO_CODEC_H263 2
  31 #define SWFDEC_VIDEO_CODEC_SCREEN 3
  32 #define SWFDEC_VIDEO_CODEC_VP6 4
  33 #define SWFDEC_VIDEO_CODEC_VP6_ALPHA 5
  34 #define SWFDEC_VIDEO_CODEC_SCREEN2 6
  35 #define SWFDEC_VIDEO_CODEC_H264 7
  36
  37 typedef enum {
  38   SWFDEC_VIDEO_FORMAT_RGBA,
  39   SWFDEC_VIDEO_FORMAT_I420
  40 } SwfdecVideoFormat;
  41
  42
  43 typedef struct _SwfdecVideoDecoder SwfdecVideoDecoder;
  44 typedef struct _SwfdecVideoDecoderClass SwfdecVideoDecoderClass;
  45
  46 #define SWFDEC_TYPE_VIDEO_DECODER                    (swfdec_video_decoder_get_type())
  47 #define SWFDEC_IS_VIDEO_DECODER(obj)                 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SWFDEC_TYPE_VIDEO_DECODER))
  48 #define SWFDEC_IS_VIDEO_DECODER_CLASS(klass)         (G_TYPE_CHECK_CLASS_TYPE ((klass), SWFDEC_TYPE_VIDEO_DECODER))
  49 #define SWFDEC_VIDEO_DECODER(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), SWFDEC_TYPE_VIDEO_DECODER, SwfdecVideoDecoder))
  50 #define SWFDEC_VIDEO_DECODER_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST ((klass), SWFDEC_TYPE_VIDEO_DECODER, SwfdecVideoDecoderClass))
  51 #define SWFDEC_VIDEO_DECODER_GET_CLASS(obj)          (G_TYPE_INSTANCE_GET_CLASS ((obj), SWFDEC_TYPE_VIDEO_DECODER, SwfdecVideoDecoderClass))
  52
  53 struct _SwfdecVideoDecoder
  54 {
  55   GObject               object;
  56
  57   /*< protected >*/
  58   guint                 width;          /* width of the current image */
  59   guint                 height;         /* height of the current image */
  60   guint8 *              plane[3];       /* planes of the image, not all might be used */
  61   guint                 rowstride[3];   /* rowstrides of the planes */
  62   guint8 *              mask;           /* A8 mask or NULL if none */
  63   guint                 mask_rowstride; /* rowstride of mask plane */
  64   /*< private >*/
  65   guint                 codec;          /* codec this decoder uses */
  66   gboolean              error;          /* if this codec is in an error state */
  67 };
  68
  69 struct _SwfdecVideoDecoderClass
  70 {
  71   /*< private >*/
  72   GObjectClass          object_class;
  73
  74   /*< public >*/
  75   gboolean              (* prepare)     (guint                  codec,
  76                                          char **                missing);
  77   SwfdecVideoDecoder *  (* create)      (guint                  codec);
  78
  79   void                  (* set_codec_data)
  80                                         (SwfdecVideoDecoder *   decoder,
  81                                          SwfdecBuffer *         buffer);
  82   void                  (* decode)      (SwfdecVideoDecoder *   decoder,
  83                                          SwfdecBuffer *         buffer);
  84 };
  85
  86 SwfdecVideoFormat       swfdec_video_codec_get_format   (guint                  codec);
  87
  88 GType                   swfdec_video_decoder_get_type   (void);
  89
  90 void                    swfdec_video_decoder_register   (GType                  type);
  91
  92 gboolean                swfdec_video_decoder_prepare    (guint                  codec,
  93                                                          char **                missing);
  94
  95 SwfdecVideoDecoder *    swfdec_video_decoder_new        (guint                  codec);
  96
  97 void                    swfdec_video_decoder_set_codec_data
  98                                                         (SwfdecVideoDecoder *   decoder,
  99                                                          SwfdecBuffer *         buffer);
 100 void                    swfdec_video_decoder_decode     (SwfdecVideoDecoder *   decoder,
 101                                                          SwfdecBuffer *         buffer);
 102 guint                   swfdec_video_decoder_get_codec  (SwfdecVideoDecoder *   decoder);
 103 guint                   swfdec_video_decoder_get_width  (SwfdecVideoDecoder *   decoder);
 104 guint                   swfdec_video_decoder_get_height (SwfdecVideoDecoder *   decoder);
 105 cairo_surface_t *       swfdec_video_decoder_get_image  (SwfdecVideoDecoder *   decoder,
 106                                                          SwfdecRenderer *       renderer);
 107 gboolean                swfdec_video_decoder_get_error  (SwfdecVideoDecoder *   decoder);
 108
 109 /* for subclasses */
 110 void                    swfdec_video_decoder_error      (SwfdecVideoDecoder *   decoder,
 111                                                          const char *           error,
 112                                                          ...) G_GNUC_PRINTF (2, 3);
 113 void                    swfdec_video_decoder_errorv     (SwfdecVideoDecoder *   decoder,
 114                                                          const char *           error,
 115                                                          va_list                args);
 116
 117
 118
 119 G_END_DECLS
 120 #endif