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vpx/vpx_scale/generic/yv12extend.c

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Initial WebM release
2010-05-18 17:58:33 +02:00
/*
Use WebM in copyright notice for consistency Changes 'The VP8 project' to 'The WebM project', for consistency with other webmproject.org repositories. Fixes issue #97. Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
2010-09-09 14:16:39 +02:00
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
Initial WebM release
2010-05-18 17:58:33 +02:00
*
cosmetics: trim trailing whitespace When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-18 18:39:21 +02:00
* Use of this source code is governed by a BSD-style license
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-04 22:19:40 +02:00
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
cosmetics: trim trailing whitespace When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-18 18:39:21 +02:00
* in the file PATENTS. All contributing project authors may
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-04 22:19:40 +02:00
* be found in the AUTHORS file in the root of the source tree.
Initial WebM release
2010-05-18 17:58:33 +02:00
*/
#include "vpx_scale/yv12config.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/vpxscale.h"
/****************************************************************************
* Exports
****************************************************************************/
/****************************************************************************
*
****************************************************************************/
void
vp8_yv12_extend_frame_borders(YV12_BUFFER_CONFIG *ybf)
{
int i;
unsigned char *src_ptr1, *src_ptr2;
unsigned char *dest_ptr1, *dest_ptr2;
unsigned int Border;
int plane_stride;
int plane_height;
int plane_width;
/***********/
/* Y Plane */
/***********/
Border = ybf->border;
plane_stride = ybf->y_stride;
plane_height = ybf->y_height;
plane_width = ybf->y_width;
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* copy the left and right most columns out */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->y_buffer;
src_ptr2 = src_ptr1 + plane_width - 1;
dest_ptr1 = src_ptr1 - Border;
dest_ptr2 = src_ptr2 + 1;
for (i = 0; i < plane_height; i++)
{
vpx_memset(dest_ptr1, src_ptr1[0], Border);
vpx_memset(dest_ptr2, src_ptr2[0], Border);
src_ptr1 += plane_stride;
src_ptr2 += plane_stride;
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* Now copy the top and bottom source lines into each line of the respective borders */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->y_buffer - Border;
src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
dest_ptr1 = src_ptr1 - (Border * plane_stride);
dest_ptr2 = src_ptr2 + plane_stride;
for (i = 0; i < (int)Border; i++)
{
vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
/***********/
/* U Plane */
/***********/
plane_stride = ybf->uv_stride;
plane_height = ybf->uv_height;
plane_width = ybf->uv_width;
Border /= 2;
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* copy the left and right most columns out */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->u_buffer;
src_ptr2 = src_ptr1 + plane_width - 1;
dest_ptr1 = src_ptr1 - Border;
dest_ptr2 = src_ptr2 + 1;
for (i = 0; i < plane_height; i++)
{
vpx_memset(dest_ptr1, src_ptr1[0], Border);
vpx_memset(dest_ptr2, src_ptr2[0], Border);
src_ptr1 += plane_stride;
src_ptr2 += plane_stride;
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* Now copy the top and bottom source lines into each line of the respective borders */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->u_buffer - Border;
src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
dest_ptr1 = src_ptr1 - (Border * plane_stride);
dest_ptr2 = src_ptr2 + plane_stride;
for (i = 0; i < (int)(Border); i++)
{
vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
/***********/
/* V Plane */
/***********/
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* copy the left and right most columns out */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->v_buffer;
src_ptr2 = src_ptr1 + plane_width - 1;
dest_ptr1 = src_ptr1 - Border;
dest_ptr2 = src_ptr2 + 1;
for (i = 0; i < plane_height; i++)
{
vpx_memset(dest_ptr1, src_ptr1[0], Border);
vpx_memset(dest_ptr2, src_ptr2[0], Border);
src_ptr1 += plane_stride;
src_ptr2 += plane_stride;
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* Now copy the top and bottom source lines into each line of the respective borders */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->v_buffer - Border;
src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
dest_ptr1 = src_ptr1 - (Border * plane_stride);
dest_ptr2 = src_ptr2 + plane_stride;
for (i = 0; i < (int)(Border); i++)
{
vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
}
Increase static linkage, remove unused functions A large number of functions were defined with external linkage, even though they were only used from within one file. This patch changes their linkage to static and removes the vp8_ prefix from their names, which should make it more obvious to the reader that the function is contained within the current translation unit. Functions that were not referenced were removed. These symbols were identified by: $ nm -A libvpx.a | sort -k3 | uniq -c -f2 | grep ' [A-Z] ' \ | sort | grep '^ *1 ' Change-Id: I59609f58ab65312012c047036ae1e0634f795779
2011-03-17 22:07:59 +01:00
static void
extend_frame_borders_yonly(YV12_BUFFER_CONFIG *ybf)
Initial WebM release
2010-05-18 17:58:33 +02:00
{
int i;
unsigned char *src_ptr1, *src_ptr2;
unsigned char *dest_ptr1, *dest_ptr2;
unsigned int Border;
int plane_stride;
int plane_height;
int plane_width;
/***********/
/* Y Plane */
/***********/
Border = ybf->border;
plane_stride = ybf->y_stride;
plane_height = ybf->y_height;
plane_width = ybf->y_width;
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* copy the left and right most columns out */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->y_buffer;
src_ptr2 = src_ptr1 + plane_width - 1;
dest_ptr1 = src_ptr1 - Border;
dest_ptr2 = src_ptr2 + 1;
for (i = 0; i < plane_height; i++)
{
vpx_memset(dest_ptr1, src_ptr1[0], Border);
vpx_memset(dest_ptr2, src_ptr2[0], Border);
src_ptr1 += plane_stride;
src_ptr2 += plane_stride;
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
Eliminate more warnings. This eliminates a large set of warnings exposed by the Mozilla build system (Use of C++ comments in ISO C90 source, commas at the end of enum lists, a couple incomplete initializers, and signed/unsigned comparisons). It also eliminates many (but not all) of the warnings expose by newer GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite without checking the return values). There are a few spurious warnings left on my system: ../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used uninitialized in this function gcc seems to be unable to figure out that the value shortcut doesn't change between the two if blocks that test it here. ../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned expression >= 0 is always true ../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned expression >= 0 is always true This is true, so far as it goes, but it's comparing against an enum, and the C standard does not mandate that enums be unsigned, so the checks can't be removed. Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-28 01:04:02 +02:00
/* Now copy the top and bottom source lines into each line of the respective borders */
Initial WebM release
2010-05-18 17:58:33 +02:00
src_ptr1 = ybf->y_buffer - Border;
src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
dest_ptr1 = src_ptr1 - (Border * plane_stride);
dest_ptr2 = src_ptr2 + plane_stride;
for (i = 0; i < (int)Border; i++)
{
vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
dest_ptr1 += plane_stride;
dest_ptr2 += plane_stride;
}
plane_stride /= 2;
plane_height /= 2;
plane_width /= 2;
Border /= 2;
}
/****************************************************************************
*
* ROUTINE : vp8_yv12_copy_frame
*
* INPUTS :
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Copies the source image into the destination image and
* updates the destination's UMV borders.
*
* SPECIAL NOTES : The frames are assumed to be identical in size.
*
****************************************************************************/
void
vp8_yv12_copy_frame(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc)
{
int row;
unsigned char *source, *dest;
source = src_ybc->y_buffer;
dest = dst_ybc->y_buffer;
for (row = 0; row < src_ybc->y_height; row++)
{
vpx_memcpy(dest, source, src_ybc->y_width);
source += src_ybc->y_stride;
dest += dst_ybc->y_stride;
}
source = src_ybc->u_buffer;
dest = dst_ybc->u_buffer;
for (row = 0; row < src_ybc->uv_height; row++)
{
vpx_memcpy(dest, source, src_ybc->uv_width);
source += src_ybc->uv_stride;
dest += dst_ybc->uv_stride;
}
source = src_ybc->v_buffer;
dest = dst_ybc->v_buffer;
for (row = 0; row < src_ybc->uv_height; row++)
{
vpx_memcpy(dest, source, src_ybc->uv_width);
source += src_ybc->uv_stride;
dest += dst_ybc->uv_stride;
}
vp8_yv12_extend_frame_borders_ptr(dst_ybc);
}
void
vp8_yv12_copy_frame_yonly(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc)
{
int row;
unsigned char *source, *dest;
source = src_ybc->y_buffer;
dest = dst_ybc->y_buffer;
for (row = 0; row < src_ybc->y_height; row++)
{
vpx_memcpy(dest, source, src_ybc->y_width);
source += src_ybc->y_stride;
dest += dst_ybc->y_stride;
}
Increase static linkage, remove unused functions A large number of functions were defined with external linkage, even though they were only used from within one file. This patch changes their linkage to static and removes the vp8_ prefix from their names, which should make it more obvious to the reader that the function is contained within the current translation unit. Functions that were not referenced were removed. These symbols were identified by: $ nm -A libvpx.a | sort -k3 | uniq -c -f2 | grep ' [A-Z] ' \ | sort | grep '^ *1 ' Change-Id: I59609f58ab65312012c047036ae1e0634f795779
2011-03-17 22:07:59 +01:00
extend_frame_borders_yonly(dst_ybc);
Initial WebM release
2010-05-18 17:58:33 +02:00
}
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