75 строки
2.0 KiB
C
75 строки
2.0 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*
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* Based on code from the OggTheora software codec source code,
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* Copyright (C) 2002-2010 The Xiph.Org Foundation and contributors.
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*/
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#ifndef Y4MINPUT_H_
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#define Y4MINPUT_H_
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# include <stdio.h>
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# include "vpx/vpx_image.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct y4m_input y4m_input;
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/*The function used to perform chroma conversion.*/
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typedef void (*y4m_convert_func)(y4m_input *_y4m,
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unsigned char *_dst, unsigned char *_src);
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struct y4m_input {
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int pic_w;
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int pic_h;
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int fps_n;
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int fps_d;
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int par_n;
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int par_d;
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char interlace;
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int src_c_dec_h;
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int src_c_dec_v;
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int dst_c_dec_h;
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int dst_c_dec_v;
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char chroma_type[16];
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/*The size of each converted frame buffer.*/
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size_t dst_buf_sz;
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/*The amount to read directly into the converted frame buffer.*/
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size_t dst_buf_read_sz;
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/*The size of the auxilliary buffer.*/
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size_t aux_buf_sz;
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/*The amount to read into the auxilliary buffer.*/
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size_t aux_buf_read_sz;
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y4m_convert_func convert;
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unsigned char *dst_buf;
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unsigned char *aux_buf;
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enum vpx_img_fmt vpx_fmt;
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int bps;
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unsigned int bit_depth;
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};
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int y4m_input_open(y4m_input *_y4m, FILE *_fin, char *_skip, int _nskip,
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int only_420);
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void y4m_input_close(y4m_input *_y4m);
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int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *img);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // Y4MINPUT_H_
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