libswfdec/swfdec_codec_video.h

   1 /* Swfdec
   2  * Copyright (C) 2007 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_CODEC_VIDEO_H_
  21 #define _SWFDEC_CODEC_VIDEO_H_
  22
  23 #include <glib.h>
  24 #include <cairo.h>
  25 #include <libswfdec/swfdec_buffer.h>
  26
  27 #define SWFDEC_VIDEO_CODEC_UNDEFINED 0
  28 #define SWFDEC_VIDEO_CODEC_H263 2
  29 #define SWFDEC_VIDEO_CODEC_SCREEN 3
  30 #define SWFDEC_VIDEO_CODEC_VP6 4
  31 #define SWFDEC_VIDEO_CODEC_VP6_ALPHA 5
  32 #define SWFDEC_VIDEO_CODEC_SCREEN2 6
  33
  34 typedef enum {
  35   SWFDEC_VIDEO_FORMAT_RGBA,
  36   SWFDEC_VIDEO_FORMAT_I420
  37 } SwfdecVideoFormat;
  38
  39 typedef struct {
  40   guint                 width;          /* width of image in pixels */
  41   guint                 height;         /* height of image in pixels */
  42   const guint8 *        plane[3];       /* planes of the image, not all might be used */
  43   const guint8 *        mask;           /* A8 mask or NULL if none */
  44   guint                 rowstride[3];   /* rowstrides of the planes */
  45   guint                 mask_rowstride; /* rowstride of mask plane */
  46 } SwfdecVideoImage;
  47
  48 typedef struct _SwfdecVideoDecoder SwfdecVideoDecoder;
  49 typedef SwfdecVideoDecoder * (SwfdecVideoDecoderNewFunc) (guint format);
  50
  51 /* notes about the decode function:
  52  * - the data must be in the format specified by swfdec_video_codec_get_format()
  53  * - the data returned in the image belongs to the decoder and must be valid
  54  *   until the next function is called on the decoder.
  55  * - you need to explicitly set mask to %NULL.
  56  */
  57 struct _SwfdecVideoDecoder {
  58   guint                 codec;
  59   gboolean              (* decode)      (SwfdecVideoDecoder *   decoder,
  60                                          SwfdecBuffer *         buffer,
  61                                          SwfdecVideoImage *     result);
  62   void                  (* free)        (SwfdecVideoDecoder *   decoder);
  63 };
  64
  65 SwfdecVideoFormat       swfdec_video_codec_get_format   (guint                  codec);
  66
  67 SwfdecVideoDecoder *    swfdec_video_decoder_new        (guint                  codec);
  68 void                    swfdec_video_decoder_free       (SwfdecVideoDecoder *   decoder);
  69
  70 cairo_surface_t *       swfdec_video_decoder_decode     (SwfdecVideoDecoder *   decoder,
  71                                                          SwfdecBuffer *         buffer);
  72
  73
  74 G_END_DECLS
  75 #endif