1 /* 2 * Copyright (c) 2010 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 * Based on code from the OggTheora software codec source code, 11 * Copyright (C) 2002-2010 The Xiph.Org Foundation and contributors. 12 */ 13 14 #ifndef Y4MINPUT_H_ 15 #define Y4MINPUT_H_ 16 17 # include <stdio.h> 18 # include "vpx/vpx_image.h" 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 25 26 typedef struct y4m_input y4m_input; 27 28 29 30 /*The function used to perform chroma conversion.*/ 31 typedef void (*y4m_convert_func)(y4m_input *_y4m, 32 unsigned char *_dst, unsigned char *_src); 33 34 35 36 struct y4m_input { 37 int pic_w; 38 int pic_h; 39 int fps_n; 40 int fps_d; 41 int par_n; 42 int par_d; 43 char interlace; 44 int src_c_dec_h; 45 int src_c_dec_v; 46 int dst_c_dec_h; 47 int dst_c_dec_v; 48 char chroma_type[16]; 49 /*The size of each converted frame buffer.*/ 50 size_t dst_buf_sz; 51 /*The amount to read directly into the converted frame buffer.*/ 52 size_t dst_buf_read_sz; 53 /*The size of the auxilliary buffer.*/ 54 size_t aux_buf_sz; 55 /*The amount to read into the auxilliary buffer.*/ 56 size_t aux_buf_read_sz; 57 y4m_convert_func convert; 58 unsigned char *dst_buf; 59 unsigned char *aux_buf; 60 enum vpx_img_fmt vpx_fmt; 61 int vpx_bps; 62 }; 63 64 int y4m_input_open(y4m_input *_y4m, FILE *_fin, char *_skip, int _nskip, 65 int only_420); 66 void y4m_input_close(y4m_input *_y4m); 67 int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *img); 68 69 #ifdef __cplusplus 70 } // extern "C" 71 #endif 72 73 #endif // Y4MINPUT_H_ 74