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976a8b2179
* qatar/master: (40 commits) H.264: template left MB handling H.264: faster fill_decode_caches H.264: faster write_back_* H.264: faster fill_filter_caches H.264: make filter_mb_fast support the case of unavailable top mb Do not include log.h in avutil.h Do not include pixfmt.h in avutil.h Do not include rational.h in avutil.h Do not include mathematics.h in avutil.h Do not include intfloat_readwrite.h in avutil.h Remove return statements following infinite loops without break RTSP: Doxygen comment cleanup doxygen: Escape '\' in Doxygen documentation. md5: cosmetics md5: use AV_WL32 to write result md5: add fate test md5: include correct headers md5: fix test program doxygen: Drop array size declarations from Doxygen parameter names. doxygen: Fix parameter names to match the function prototypes. ... Conflicts: libavcodec/x86/dsputil_mmx.c libavformat/flvenc.c libavformat/oggenc.c libavformat/wtv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
131 lines
4.8 KiB
C
131 lines
4.8 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_IMGUTILS_H
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#define AVUTIL_IMGUTILS_H
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/**
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* @file
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* misc image utilities
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*/
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#include "avutil.h"
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#include "pixdesc.h"
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/**
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* Compute the max pixel step for each plane of an image with a
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* format described by pixdesc.
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*
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* The pixel step is the distance in bytes between the first byte of
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* the group of bytes which describe a pixel component and the first
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* byte of the successive group in the same plane for the same
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* component.
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*
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* @param max_pixsteps an array which is filled with the max pixel step
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* for each plane. Since a plane may contain different pixel
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* components, the computed max_pixsteps[plane] is relative to the
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* component in the plane with the max pixel step.
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* @param max_pixstep_comps an array which is filled with the component
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* for each plane which has the max pixel step. May be NULL.
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*/
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void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
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const AVPixFmtDescriptor *pixdesc);
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/**
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* Compute the size of an image line with format pix_fmt and width
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* width for the plane plane.
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*
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* @return the computed size in bytes
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*/
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int av_image_get_linesize(enum PixelFormat pix_fmt, int width, int plane);
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/**
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* Fill plane linesizes for an image with pixel format pix_fmt and
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* width width.
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*
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* @param linesizes array to be filled with the linesize for each plane
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* @return >= 0 in case of success, a negative error code otherwise
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*/
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int av_image_fill_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width);
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/**
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* Fill plane data pointers for an image with pixel format pix_fmt and
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* height height.
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*
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* @param data pointers array to be filled with the pointer for each image plane
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* @param ptr the pointer to a buffer which will contain the image
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* @param linesizes the array containing the linesize for each
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* plane, should be filled by av_image_fill_linesizes()
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* @return the size in bytes required for the image buffer, a negative
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* error code in case of failure
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*/
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int av_image_fill_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
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uint8_t *ptr, const int linesizes[4]);
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/**
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* Allocate an image with size w and h and pixel format pix_fmt, and
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* fill pointers and linesizes accordingly.
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* The allocated image buffer has to be freed by using
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* av_freep(&pointers[0]).
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*
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* @param align the value to use for buffer size alignment
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* @return the size in bytes required for the image buffer, a negative
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* error code in case of failure
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*/
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int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
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int w, int h, enum PixelFormat pix_fmt, int align);
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/**
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* Copy image plane from src to dst.
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* That is, copy "height" number of lines of "bytewidth" bytes each.
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* The first byte of each successive line is separated by *_linesize
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* bytes.
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*
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* @param dst_linesize linesize for the image plane in dst
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* @param src_linesize linesize for the image plane in src
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*/
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void av_image_copy_plane(uint8_t *dst, int dst_linesize,
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const uint8_t *src, int src_linesize,
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int bytewidth, int height);
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/**
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* Copy image in src_data to dst_data.
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*
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* @param dst_linesizes linesizes for the image in dst_data
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* @param src_linesizes linesizes for the image in src_data
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*/
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void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
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const uint8_t *src_data[4], const int src_linesizes[4],
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enum PixelFormat pix_fmt, int width, int height);
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/**
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* Check if the given dimension of an image is valid, meaning that all
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* bytes of the image can be addressed with a signed int.
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*
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* @param w the width of the picture
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* @param h the height of the picture
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* @param log_offset the offset to sum to the log level for logging with log_ctx
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* @param log_ctx the parent logging context, it may be NULL
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* @return >= 0 if valid, a negative error code otherwise
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*/
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int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
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int ff_set_systematic_pal2(uint32_t pal[256], enum PixelFormat pix_fmt);
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#endif /* AVUTIL_IMGUTILS_H */
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