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Diffstat (limited to 'media/libvpx/libvpx/y4minput.h')
-rw-r--r-- | media/libvpx/libvpx/y4minput.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/y4minput.h b/media/libvpx/libvpx/y4minput.h new file mode 100644 index 0000000000..573750d749 --- /dev/null +++ b/media/libvpx/libvpx/y4minput.h @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2010 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + * + * Based on code from the OggTheora software codec source code, + * Copyright (C) 2002-2010 The Xiph.Org Foundation and contributors. + */ + +#ifndef VPX_Y4MINPUT_H_ +#define VPX_Y4MINPUT_H_ + +#include <stdio.h> +#include "vpx/vpx_image.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct y4m_input y4m_input; + +/*The function used to perform chroma conversion.*/ +typedef void (*y4m_convert_func)(y4m_input *_y4m, unsigned char *_dst, + unsigned char *_src); + +struct y4m_input { + int pic_w; + int pic_h; + int fps_n; + int fps_d; + int par_n; + int par_d; + char interlace; + int src_c_dec_h; + int src_c_dec_v; + int dst_c_dec_h; + int dst_c_dec_v; + char chroma_type[16]; + /*The size of each converted frame buffer.*/ + size_t dst_buf_sz; + /*The amount to read directly into the converted frame buffer.*/ + size_t dst_buf_read_sz; + /*The size of the auxilliary buffer.*/ + size_t aux_buf_sz; + /*The amount to read into the auxilliary buffer.*/ + size_t aux_buf_read_sz; + y4m_convert_func convert; + unsigned char *dst_buf; + unsigned char *aux_buf; + enum vpx_img_fmt vpx_fmt; + int bps; + unsigned int bit_depth; +}; + +/** + * Open the input file, treating it as Y4M. |y4m_ctx| is filled in after + * reading it. The |skip_buffer| indicates bytes that were previously read + * from |file|, to do input-type detection; this buffer will be read before + * the |file| is read. It is of size |num_skip|, which *must* be 8 or less. + * + * Returns 0 on success, -1 on failure. + */ +int y4m_input_open(y4m_input *y4m_ctx, FILE *file, char *skip_buffer, + int num_skip, int only_420); +void y4m_input_close(y4m_input *_y4m); +int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *img); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VPX_Y4MINPUT_H_ |