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 #if !defined(_y4minput_H) 14 # define _y4minput_H (1) 15 # include <stdio.h> 16 # include "vpx/vpx_image.h" 17 18 19 20 typedef struct y4m_input y4m_input; 21 22 23 24 /*The function used to perform chroma conversion.*/ 25 typedef void (*y4m_convert_func)(y4m_input *_y4m, 26 unsigned char *_dst,unsigned char *_src); 27 28 29 30 struct y4m_input{ 31 int pic_w; 32 int pic_h; 33 int fps_n; 34 int fps_d; 35 int par_n; 36 int par_d; 37 char interlace; 38 int src_c_dec_h; 39 int src_c_dec_v; 40 int dst_c_dec_h; 41 int dst_c_dec_v; 42 char chroma_type[16]; 43 /*The size of each converted frame buffer.*/ 44 size_t dst_buf_sz; 45 /*The amount to read directly into the converted frame buffer.*/ 46 size_t dst_buf_read_sz; 47 /*The size of the auxilliary buffer.*/ 48 size_t aux_buf_sz; 49 /*The amount to read into the auxilliary buffer.*/ 50 size_t aux_buf_read_sz; 51 y4m_convert_func convert; 52 unsigned char *dst_buf; 53 unsigned char *aux_buf; 54 }; 55 56 int y4m_input_open(y4m_input *_y4m,FILE *_fin,char *_skip,int _nskip); 57 void y4m_input_close(y4m_input *_y4m); 58 int y4m_input_fetch_frame(y4m_input *_y4m,FILE *_fin,vpx_image_t *img); 59 60 #endif 61