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Code Issues Releases Activity

Remove deprecation of avcodec_get_chroma_sub_sample.

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Add explanations what the difference between the 2 functions are and
when either should be used.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-14 11:59:25 +01:00
parent e13d5e9a4b
commit d4e74d5d6d
3 changed files with 20 additions and 2 deletions
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15
libavcodec/avcodec.h
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@ -4580,10 +4580,21 @@ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
*/
/**
* @deprecated Use av_pix_fmt_get_chroma_sub_sample
* Utility function to access log2_chroma_w log2_chroma_h from
* the pixel format AVPixFmtDescriptor.
*
* This function asserts that pix_fmt is valid. See av_pix_fmt_get_chroma_sub_sample
* for one that returns a failure code and continues in case of invalid
* pix_fmts.
*
* @param[in] pix_fmt the pixel format
* @param[out] h_shift store log2_chroma_h
* @param[out] v_shift store log2_chroma_w
*
* @see av_pix_fmt_get_chroma_sub_sample
*/
void attribute_deprecated avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift);
void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift);
/**
* Return a value representing the fourCC code associated to the

2
libavcodec/imgconvert.c
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@ -33,6 +33,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/colorspace.h"
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
@ -427,6 +428,7 @@ static const PixFmtInfo pix_fmt_info[AV_PIX_FMT_NB] = {
void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
av_assert0(desc);
*h_shift = desc->log2_chroma_w;
*v_shift = desc->log2_chroma_h;
}

5
libavutil/pixdesc.h
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@ -210,6 +210,11 @@ enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc);
* Utility function to access log2_chroma_w log2_chroma_h from
* the pixel format AVPixFmtDescriptor.
*
* See avcodec_get_chroma_sub_sample() for a function that asserts a
* valid pixel format instead of returning an error code.
* Its recommanded that you use avcodec_get_chroma_sub_sample unless
* you do check the return code!
*
* @param[in] pix_fmt the pixel format
* @param[out] h_shift store log2_chroma_h
* @param[out] v_shift store log2_chroma_w