1 /*
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
11 #include <assert.h>
12 #include "./y4menc.h"
13
y4m_write_file_header(char * buf,size_t len,int width,int height,const struct VpxRational * framerate,vpx_img_fmt_t fmt,unsigned int bit_depth)14 int y4m_write_file_header(char *buf, size_t len, int width, int height,
15 const struct VpxRational *framerate,
16 vpx_img_fmt_t fmt, unsigned int bit_depth) {
17 const char *color;
18 switch (bit_depth) {
19 case 8:
20 color = fmt == VPX_IMG_FMT_I444
21 ? "C444\n"
22 : fmt == VPX_IMG_FMT_I422 ? "C422\n" : "C420jpeg\n";
23 break;
24 case 9:
25 color = fmt == VPX_IMG_FMT_I44416
26 ? "C444p9 XYSCSS=444P9\n"
27 : fmt == VPX_IMG_FMT_I42216 ? "C422p9 XYSCSS=422P9\n"
28 : "C420p9 XYSCSS=420P9\n";
29 break;
30 case 10:
31 color = fmt == VPX_IMG_FMT_I44416
32 ? "C444p10 XYSCSS=444P10\n"
33 : fmt == VPX_IMG_FMT_I42216 ? "C422p10 XYSCSS=422P10\n"
34 : "C420p10 XYSCSS=420P10\n";
35 break;
36 case 12:
37 color = fmt == VPX_IMG_FMT_I44416
38 ? "C444p12 XYSCSS=444P12\n"
39 : fmt == VPX_IMG_FMT_I42216 ? "C422p12 XYSCSS=422P12\n"
40 : "C420p12 XYSCSS=420P12\n";
41 break;
42 case 14:
43 color = fmt == VPX_IMG_FMT_I44416
44 ? "C444p14 XYSCSS=444P14\n"
45 : fmt == VPX_IMG_FMT_I42216 ? "C422p14 XYSCSS=422P14\n"
46 : "C420p14 XYSCSS=420P14\n";
47 break;
48 case 16:
49 color = fmt == VPX_IMG_FMT_I44416
50 ? "C444p16 XYSCSS=444P16\n"
51 : fmt == VPX_IMG_FMT_I42216 ? "C422p16 XYSCSS=422P16\n"
52 : "C420p16 XYSCSS=420P16\n";
53 break;
54 default: color = NULL; assert(0);
55 }
56 return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height,
57 framerate->numerator, framerate->denominator, 'p', color);
58 }
59
y4m_write_frame_header(char * buf,size_t len)60 int y4m_write_frame_header(char *buf, size_t len) {
61 return snprintf(buf, len, "FRAME\n");
62 }
63