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Dmitry Kovalev5ab63582014-01-18 01:02:371/*
2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
Deb Mukherjee5820c5d2014-06-12 23:53:1311#include <assert.h>
Dmitry Kovalev5ab63582014-01-18 01:02:3712#include "./y4menc.h"
13
Dmitry Kovalev5260b392014-01-28 19:12:5814int y4m_write_file_header(char *buf, size_t len, int width, int height,
15 const struct VpxRational *framerate,
Deb Mukherjee5820c5d2014-06-12 23:53:1316 vpx_img_fmt_t fmt, unsigned int bit_depth) {
17 const char *color;
18 switch (bit_depth) {
19 case 8:
clang-format99e28b82016-01-27 20:42:4520 color = fmt == VPX_IMG_FMT_444A
21 ? "C444alpha\n"
22 : fmt == VPX_IMG_FMT_I444 ? "C444\n" : fmt == VPX_IMG_FMT_I422
23 ? "C422\n"
24 : "C420jpeg\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1325 break;
26 case 9:
clang-format99e28b82016-01-27 20:42:4527 color = fmt == VPX_IMG_FMT_I44416
28 ? "C444p9 XYSCSS=444P9\n"
29 : fmt == VPX_IMG_FMT_I42216 ? "C422p9 XYSCSS=422P9\n"
30 : "C420p9 XYSCSS=420P9\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1331 break;
32 case 10:
clang-format99e28b82016-01-27 20:42:4533 color = fmt == VPX_IMG_FMT_I44416
34 ? "C444p10 XYSCSS=444P10\n"
35 : fmt == VPX_IMG_FMT_I42216 ? "C422p10 XYSCSS=422P10\n"
36 : "C420p10 XYSCSS=420P10\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1337 break;
38 case 12:
clang-format99e28b82016-01-27 20:42:4539 color = fmt == VPX_IMG_FMT_I44416
40 ? "C444p12 XYSCSS=444P12\n"
41 : fmt == VPX_IMG_FMT_I42216 ? "C422p12 XYSCSS=422P12\n"
42 : "C420p12 XYSCSS=420P12\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1343 break;
44 case 14:
clang-format99e28b82016-01-27 20:42:4545 color = fmt == VPX_IMG_FMT_I44416
46 ? "C444p14 XYSCSS=444P14\n"
47 : fmt == VPX_IMG_FMT_I42216 ? "C422p14 XYSCSS=422P14\n"
48 : "C420p14 XYSCSS=420P14\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1349 break;
50 case 16:
clang-format99e28b82016-01-27 20:42:4551 color = fmt == VPX_IMG_FMT_I44416
52 ? "C444p16 XYSCSS=444P16\n"
53 : fmt == VPX_IMG_FMT_I42216 ? "C422p16 XYSCSS=422P16\n"
54 : "C420p16 XYSCSS=420P16\n";
Deb Mukherjee5820c5d2014-06-12 23:53:1355 break;
clang-format99e28b82016-01-27 20:42:4556 default: color = NULL; assert(0);
Deb Mukherjee5820c5d2014-06-12 23:53:1357 }
Dmitry Kovalev5260b392014-01-28 19:12:5858 return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height,
59 framerate->numerator, framerate->denominator, 'p', color);
Dmitry Kovalev5ab63582014-01-18 01:02:3760}
61
Dmitry Kovalev5260b392014-01-28 19:12:5862int y4m_write_frame_header(char *buf, size_t len) {
63 return snprintf(buf, len, "FRAME\n");
Dmitry Kovalev5ab63582014-01-18 01:02:3764}