2 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * function definitions common to libschroedinger decoder and encoder
26 #include "libdirac_libschro.h"
27 #include "libschroedinger.h"
30 * Schroedinger video preset table. Ensure that this tables matches up correctly
31 * with the ff_dirac_schro_video_format_info table in libdirac_libschro.c.
33 static const SchroVideoFormatEnum ff_schro_video_formats[]={
34 SCHRO_VIDEO_FORMAT_CUSTOM ,
35 SCHRO_VIDEO_FORMAT_QSIF ,
36 SCHRO_VIDEO_FORMAT_QCIF ,
37 SCHRO_VIDEO_FORMAT_SIF ,
38 SCHRO_VIDEO_FORMAT_CIF ,
39 SCHRO_VIDEO_FORMAT_4SIF ,
40 SCHRO_VIDEO_FORMAT_4CIF ,
41 SCHRO_VIDEO_FORMAT_SD480I_60 ,
42 SCHRO_VIDEO_FORMAT_SD576I_50 ,
43 SCHRO_VIDEO_FORMAT_HD720P_60 ,
44 SCHRO_VIDEO_FORMAT_HD720P_50 ,
45 SCHRO_VIDEO_FORMAT_HD1080I_60 ,
46 SCHRO_VIDEO_FORMAT_HD1080I_50 ,
47 SCHRO_VIDEO_FORMAT_HD1080P_60 ,
48 SCHRO_VIDEO_FORMAT_HD1080P_50 ,
49 SCHRO_VIDEO_FORMAT_DC2K_24 ,
50 SCHRO_VIDEO_FORMAT_DC4K_24 ,
53 SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
55 unsigned int num_formats = sizeof(ff_schro_video_formats) /
56 sizeof(ff_schro_video_formats[0]);
58 unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
60 return (idx < num_formats) ? ff_schro_video_formats[idx] :
61 SCHRO_VIDEO_FORMAT_CUSTOM;
64 int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
65 SchroFrameFormat *schro_frame_fmt)
67 unsigned int num_formats = sizeof(schro_pixel_format_map) /
68 sizeof(schro_pixel_format_map[0]);
72 for (idx = 0; idx < num_formats; ++idx) {
73 if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
74 *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
81 static void FreeSchroFrame(SchroFrame *frame, void *priv)
83 AVPicture *p_pic = priv;
88 avpicture_free(p_pic);
92 SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
93 SchroFrameFormat schro_frame_fmt)
97 int y_width, uv_width;
98 int y_height, uv_height;
101 y_width = avccontext->width;
102 y_height = avccontext->height;
103 uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
104 uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
106 p_pic = av_mallocz(sizeof(AVPicture));
107 avpicture_alloc(p_pic, avccontext->pix_fmt, y_width, y_height);
109 p_frame = schro_frame_new();
110 p_frame->format = schro_frame_fmt;
111 p_frame->width = y_width;
112 p_frame->height = y_height;
113 schro_frame_set_free_callback(p_frame, FreeSchroFrame, (void *)p_pic);
115 for (i = 0; i < 3; ++i) {
116 p_frame->components[i].width = i ? uv_width : y_width;
117 p_frame->components[i].stride = p_pic->linesize[i];
118 p_frame->components[i].height = i ? uv_height : y_height;
119 p_frame->components[i].length =
120 p_frame->components[i].stride * p_frame->components[i].height;
121 p_frame->components[i].data = p_pic->data[i];
124 p_frame->components[i].v_shift =
125 SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
126 p_frame->components[i].h_shift =
127 SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);