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 14int 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 21 ? "C444alpha\n" 22 : fmt == VPX_IMG_FMT_I444 23 ? "C444\n" 24 : fmt == VPX_IMG_FMT_I422 ? "C422\n" : "C420jpeg\n"; 25 break; 26 case 9: 27 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"; 31 break; 32 case 10: 33 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"; 37 break; 38 case 12: 39 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"; 43 break; 44 case 14: 45 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"; 49 break; 50 case 16: 51 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"; 55 break; 56 default: color = NULL; assert(0); 57 } 58 return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height, 59 framerate->numerator, framerate->denominator, 'p', color); 60} 61 62int y4m_write_frame_header(char *buf, size_t len) { 63 return snprintf(buf, len, "FRAME\n"); 64} 65