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 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_444A ? "C444alpha\n" : 21 fmt == VPX_IMG_FMT_I444 ? "C444\n" : 22 fmt == VPX_IMG_FMT_I422 ? "C422\n" : 23 "C420jpeg\n"; 24 break; 25 case 9: 26 color = fmt == VPX_IMG_FMT_I44416 ? "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 ? "C444p10 XYSCSS=444P10\n" : 32 fmt == VPX_IMG_FMT_I42216 ? "C422p10 XYSCSS=422P10\n" : 33 "C420p10 XYSCSS=420P10\n"; 34 break; 35 case 12: 36 color = fmt == VPX_IMG_FMT_I44416 ? "C444p12 XYSCSS=444P12\n" : 37 fmt == VPX_IMG_FMT_I42216 ? "C422p12 XYSCSS=422P12\n" : 38 "C420p12 XYSCSS=420P12\n"; 39 break; 40 case 14: 41 color = fmt == VPX_IMG_FMT_I44416 ? "C444p14 XYSCSS=444P14\n" : 42 fmt == VPX_IMG_FMT_I42216 ? "C422p14 XYSCSS=422P14\n" : 43 "C420p14 XYSCSS=420P14\n"; 44 break; 45 case 16: 46 color = fmt == VPX_IMG_FMT_I44416 ? "C444p16 XYSCSS=444P16\n" : 47 fmt == VPX_IMG_FMT_I42216 ? "C422p16 XYSCSS=422P16\n" : 48 "C420p16 XYSCSS=420P16\n"; 49 break; 50 default: 51 color = NULL; 52 assert(0); 53 } 54 return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height, 55 framerate->numerator, framerate->denominator, 'p', color); 56 } 57 58 int y4m_write_frame_header(char *buf, size_t len) { 59 return snprintf(buf, len, "FRAME\n"); 60 } 61
