1 /* 2 * Copyright (c) 2013 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 "./ivfenc.h" 12 13 #include "vpx/vpx_encoder.h" 14 #include "vpx_ports/mem_ops.h" 15 16 void ivf_write_file_header(FILE *outfile, const struct vpx_codec_enc_cfg *cfg, 17 unsigned int fourcc, int frame_cnt) { 18 char header[32]; 19 20 header[0] = 'D'; 21 header[1] = 'K'; 22 header[2] = 'I'; 23 header[3] = 'F'; 24 mem_put_le16(header + 4, 0); // version 25 mem_put_le16(header + 6, 32); // header size 26 mem_put_le32(header + 8, fourcc); // fourcc 27 mem_put_le16(header + 12, cfg->g_w); // width 28 mem_put_le16(header + 14, cfg->g_h); // height 29 mem_put_le32(header + 16, cfg->g_timebase.den); // rate 30 mem_put_le32(header + 20, cfg->g_timebase.num); // scale 31 mem_put_le32(header + 24, frame_cnt); // length 32 mem_put_le32(header + 28, 0); // unused 33 34 fwrite(header, 1, 32, outfile); 35 } 36 37 void ivf_write_frame_header(FILE *outfile, int64_t pts, size_t frame_size) { 38 char header[12]; 39 40 mem_put_le32(header, (int)frame_size); 41 mem_put_le32(header + 4, (int)(pts & 0xFFFFFFFF)); 42 mem_put_le32(header + 8, (int)(pts >> 32)); 43 fwrite(header, 1, 12, outfile); 44 } 45 46 void ivf_write_frame_size(FILE *outfile, size_t frame_size) { 47 char header[4]; 48 49 mem_put_le32(header, (int)frame_size); 50 fwrite(header, 1, 4, outfile); 51 } 52
