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Add av_picture_data_copy() and reimplement av_picture_copy() as a

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wrapper of it.

The new function is more generic, and does not depend on the
definition of the AVPicture struct.

Patch by S.N. Hemanth Meenakshisundaram s + "meenakshisundaram".substr(0, 7) + "@ucsd.edu".

Originally committed as revision 24768 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
S.N. Hemanth Meenakshisundaram 2010-08-11 14:18:52 +00:00 committed by Stefano Sabatini
parent 4bf2d6e8d4
commit 9f08d80363
2 changed files with 30 additions and 12 deletions
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16
libavcodec/avcodec.h
View File

@ -30,8 +30,8 @@
#include "libavutil/avutil.h"
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 84
#define LIBAVCODEC_VERSION_MICRO 3
#define LIBAVCODEC_VERSION_MINOR 85
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
@ -3937,7 +3937,17 @@ void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size);
/**
* Copy image 'src' to 'dst'.
* Copy image data in src_data to dst_data.
*
* @param dst_linesize linesizes for the image in dst_data
* @param src_linesize linesizes for the image in src_data
*/
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
uint8_t *src_data[4], int src_linesize[4],
enum PixelFormat pix_fmt, int width, int height);
/**
* Copy image src to dst. Wraps av_picture_data_copy() above.
*/
void av_picture_copy(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int width, int height);

26
libavcodec/imgconvert.c
View File

@ -845,8 +845,9 @@ int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
return -1;
}
void av_picture_copy(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int width, int height)
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
uint8_t *src_data[4], int src_linesize[4],
enum PixelFormat pix_fmt, int width, int height)
{
int i;
const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
@ -862,21 +863,28 @@ void av_picture_copy(AVPicture *dst, const AVPicture *src,
if (i == 1 || i == 2) {
h= -((-height)>>desc->log2_chroma_h);
}
ff_img_copy_plane(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
bwidth, h);
ff_img_copy_plane(dst_data[i], dst_linesize[i],
src_data[i], src_linesize[i],
bwidth, h);
}
break;
case FF_PIXEL_PALETTE:
ff_img_copy_plane(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
ff_img_copy_plane(dst_data[0], dst_linesize[0],
src_data[0], src_linesize[0],
width, height);
/* copy the palette */
memcpy(dst->data[1], src->data[1], 4*256);
memcpy(dst_data[1], src_data[1], 4*256);
break;
}
}
void av_picture_copy(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int width, int height)
{
av_picture_data_copy(dst->data, dst->linesize, src->data,
src->linesize, pix_fmt, width, height);
}
/* 2x2 -> 1x1 */
void ff_shrink22(uint8_t *dst, int dst_wrap,
const uint8_t *src, int src_wrap,