Add Dirac support through libschroedinger.

patch by Anuradha Suraparaju, anuradha rd.bbc.co uk

Originally committed as revision 13046 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 80 insertions, 0 deletions

diff --git a/libavcodec/libschroedinger.c b/libavcodec/libschroedinger.c
new file mode 100644
index 0000000000..8c80c96aca
--- /dev/null
+++ b/libavcodec/libschroedinger.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+* @file libschroedinger.c
+* function definitions common to libschroedingerdec.c and libschroedingerenc.c
+*/
+
+#include "libdirac_libschro.h"
+#include "libschroedinger.h"
+
+/**
+* Schroedinger video preset table. Ensure that this tables matches up correctly
+* with the ff_dirac_schro_video_format_info table in libdirac_libschro.c.
+*/
+static const SchroVideoFormatEnum ff_schro_video_formats[]={
+    SCHRO_VIDEO_FORMAT_CUSTOM     ,
+    SCHRO_VIDEO_FORMAT_QSIF       ,
+    SCHRO_VIDEO_FORMAT_QCIF       ,
+    SCHRO_VIDEO_FORMAT_SIF        ,
+    SCHRO_VIDEO_FORMAT_CIF        ,
+    SCHRO_VIDEO_FORMAT_4SIF       ,
+    SCHRO_VIDEO_FORMAT_4CIF       ,
+    SCHRO_VIDEO_FORMAT_SD480I_60  ,
+    SCHRO_VIDEO_FORMAT_SD576I_50  ,
+    SCHRO_VIDEO_FORMAT_HD720P_60  ,
+    SCHRO_VIDEO_FORMAT_HD720P_50  ,
+    SCHRO_VIDEO_FORMAT_HD1080I_60 ,
+    SCHRO_VIDEO_FORMAT_HD1080I_50 ,
+    SCHRO_VIDEO_FORMAT_HD1080P_60 ,
+    SCHRO_VIDEO_FORMAT_HD1080P_50 ,
+    SCHRO_VIDEO_FORMAT_DC2K_24    ,
+    SCHRO_VIDEO_FORMAT_DC4K_24    ,
+};
+
+SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
+{
+    unsigned int num_formats = sizeof(ff_schro_video_formats) /
+                               sizeof(ff_schro_video_formats[0]);
+
+    unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
+
+    return (idx < num_formats) ?
+                 ff_schro_video_formats[idx] : SCHRO_VIDEO_FORMAT_CUSTOM;
+}
+
+int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
+                               SchroFrameFormat  *schro_frame_fmt)
+{
+    unsigned int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
+                               sizeof(ffmpeg_schro_pixel_format_map[0]);
+
+    int idx;
+
+    for (idx = 0; idx < num_formats; ++idx) {
+        if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
+            *schro_frame_fmt =
+                         ffmpeg_schro_pixel_format_map[idx].schro_frame_fmt;
+            return 0;
+        }
+    }
+    return -1;
+}