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kumquat-buildroot/package/gd/0005-webp.patch

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Patch committed upstream
https://bitbucket.org/libgd/gd-libgd/commits/a79232c5fa692c3b6e3f5bc95ecfc455424c3f54?at=master
Downloaded from Gentoo
https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/media-libs/gd/files/gd-2.1.1-webp.patch?revision=1.1&view=markup
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
---
https://bugs.gentoo.org/545956
From a79232c5fa692c3b6e3f5bc95ecfc455424c3f54 Mon Sep 17 00:00:00 2001
From: Pierre Joye <pierre.php@gmail.com>
Date: Tue, 20 Jan 2015 04:55:11 +0100
Subject: [PATCH] fix #129, drop VPX usage in favor of libwebp
---
configure.ac | 80 +++++------------
src/gd_webp.c | 231 +++++++++++++++++++++-----------------------------
tests/Makefile.am | 2 +-
tests/webp/bug00111.c | 2 +-
4 files changed, 122 insertions(+), 193 deletions(-)
diff --git a/configure.ac b/configure.ac
index 1024a3a..8923186 100644
--- a/configure.ac
+++ b/configure.ac
@@ -317,63 +317,6 @@ if test "$with_xpm" != no; then
fi
AM_CONDITIONAL([HAVE_LIBXPM], test "$with_xpm" = yes)
-dnl check for libvpx by default
-AC_ARG_WITH(vpx,dnl
-[ --with-vpx=DIR where to find the vpx library])
-
-case $with_vpx in
-no) ;;
-yes|"")
- PKG_CHECK_MODULES([LIBVPX], vpx, [with_vpx=yes],
- [
- PKG_CHECK_MODULES([LIBVPX], libvpx, [with_vpx=yes],
- [
- if test "$with_vpx" = yes; then
- AC_MSG_ERROR([VPX support requested, but not found])
- fi
- with_vpx=no
- ])
- ])
- ;;
-*)
- save_LIBS="$LIBS"
- save_CPPFLAGS="$CPPFLAGS"
-
- if test -d "$with_vpx"; then
- LIBVPX_CFLAGS="-I$with_vpx/include"
- LIBVPX_LIBS="-L$with_vpx/lib -lvpx"
- fi
-
- CPPFLAGS="$CPPFLAGS $LIBVPX_CFLAGS"
- LIBS="$LIBS $LIBVPX_LIBS"
-
- AC_CHECK_LIB(vpx,vpx_codec_destroy,
- [
- if test -z "$LIBVPX_LIBS"; then
- LIBVPX_LIBS="-lvpx"
- fi
- with_vpx=yes
- ],[
- if test "$with_vpx" != ""; then
- AC_MSG_ERROR([vpx support requested, but not found])
- else
- with_vpx=no
- fi
- ])
-
- CPPFLAGS="$save_CPPFLAGS"
- LIBS="$save_LIBS"
- ;;
-esac
-
-if test "$with_vpx" != no; then
- CPPFLAGS="$CPPFLAGS $LIBVPX_CFLAGS"
- LIBS="$LIBS $LIBVPX_LIBS"
- FEATURES="GD_VPX $FEATURES"
- AC_DEFINE(HAVE_LIBVPX, 1, [ Define if you have the VPX library. ])
-fi
-AM_CONDITIONAL([HAVE_LIBVPX], test "$with_vpx" = yes)
-
dnl check for libtiff by default
AC_ARG_WITH(tiff,dnl
[ --with-tiff=DIR where to find the TIFF library])
@@ -437,6 +380,27 @@ if test "$mingw_cv_win32_host" = yes; then
AC_DEFINE([BGDWIN32], [], [Define is you are building for Win32 API])
fi
+
+dnl check for libwebp by default
+AC_ARG_WITH(webp,dnl
+[ --with-webp=DIR where to find the webp library],
+ [if test -d "$withval"; then
+ LDFLAGS="$LDFLAGS -L$withval/lib"
+ CFLAGS="$CFLAGS -I$withval/include"
+ fi],
+ withval=yes)
+
+if test "$withval" != no; then
+ AC_CHECK_LIB(webp,WebPGetInfo,
+ [LIBS="-lwebp $LIBS"
+ FEATURES="GD_WEBP $FEATURES"
+ AC_DEFINE(HAVE_LIBWEBP, 1, [ Define if you have the webp library. ])])
+ with_webp=yes
+else
+ with_webp=no
+fi
+AM_CONDITIONAL([HAVE_LIBWEBP], test "$with_webp" = yes)
+
dnl report configuration
AC_MSG_RESULT([
** Configuration summary for $PACKAGE $VERSION:
@@ -444,7 +408,7 @@ AC_MSG_RESULT([
Support for Zlib: $with_zlib
Support for PNG library: $with_png
Support for JPEG library: $ac_cv_lib_jpeg_jpeg_set_defaults
- Support for VPX library: $with_vpx
+ Support for WebP library: $with_webp
Support for TIFF library: $with_tiff
Support for Freetype 2.x library: $with_freetype
Support for Fontconfig library: $with_fontconfig
diff --git a/src/gd_webp.c b/src/gd_webp.c
index a3ae1ac..c44bd80 100644
--- a/src/gd_webp.c
+++ b/src/gd_webp.c
@@ -2,33 +2,21 @@
#include "config.h"
#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_LIBWEBP
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "gd.h"
#include "gd_errors.h"
-
-#ifdef HAVE_LIBVPX
-#include "webpimg.h"
#include "gdhelpers.h"
+#include "webp/decode.h"
+#include "webp/encode.h"
-extern void gd_YUV420toRGBA(uint8* Y,
- uint8* U,
- uint8* V,
- gdImagePtr im);
-
-extern void gd_RGBAToYUV420(gdImagePtr im2,
- uint8* Y,
- uint8* U,
- uint8* V);
-
-const char * gdWebpGetVersionString()
-{
- return "not defined";
-}
+#define GD_WEBP_ALLOC_STEP (4*1024)
-BGD_DECLARE(gdImagePtr) gdImageCreateFromWebp (FILE * inFile)
+gdImagePtr gdImageCreateFromWebp (FILE * inFile)
{
gdImagePtr im;
gdIOCtx *in = gdNewFileCtx(inFile);
@@ -38,42 +26,16 @@ BGD_DECLARE(gdImagePtr) gdImageCreateFromWebp (FILE * inFile)
return im;
}
-BGD_DECLARE(gdImagePtr) gdImageCreateFromWebpPtr (int size, void *data)
+gdImagePtr gdImageCreateFromWebpCtx (gdIOCtx * infile)
{
- int width, height, ret;
- unsigned char *Y = NULL;
- unsigned char *U = NULL;
- unsigned char *V = NULL;
- gdImagePtr im;
-
- ret = WebPDecode(data, size, &Y, &U, &V, &width, &height);
- if (ret != webp_success) {
- if (Y) free(Y);
- if (U) free(U);
- if (V) free(V);
- gd_error("WebP decode: fail to decode input data");
- return NULL;
- }
- im = gdImageCreateTrueColor(width, height);
- if (!im) {
- return NULL;
- }
- gd_YUV420toRGBA(Y, U, V, im);
- return im;
-}
-
-#define GD_WEBP_ALLOC_STEP (4*1024)
-
-BGD_DECLARE(gdImagePtr) gdImageCreateFromWebpCtx (gdIOCtx * infile)
-{
- int width, height, ret;
- unsigned char *filedata = NULL;
+ int width, height;
+ uint8_t *filedata = NULL;
+ uint8_t *argb = NULL;
unsigned char *read, *temp;
- unsigned char *Y = NULL;
- unsigned char *U = NULL;
- unsigned char *V = NULL;
size_t size = 0, n;
gdImagePtr im;
+ int x, y;
+ uint8_t *p;
do {
temp = gdRealloc(filedata, size+GD_WEBP_ALLOC_STEP);
@@ -89,23 +51,97 @@ BGD_DECLARE(gdImagePtr) gdImageCreateFromWebpCtx (gdIOCtx * infile)
}
n = gdGetBuf(read, GD_WEBP_ALLOC_STEP, infile);
- size += n;
- } while (n>0);
+ if (n>0 && n!=EOF) {
+ size += n;
+ }
+ } while (n>0 && n!=EOF);
- ret = WebPDecode(filedata, size, &Y, &U, &V, &width, &height);
- gdFree(filedata);
- if (ret != webp_success) {
- if (Y) free(Y);
- if (U) free(U);
- if (V) free(V);
- gd_error("WebP decode: fail to decode input data");
+ if (WebPGetInfo(filedata,size, &width, &height) == 0) {
+ gd_error("gd-webp cannot get webp info");
return NULL;
}
+
im = gdImageCreateTrueColor(width, height);
- gd_YUV420toRGBA(Y, U, V, im);
+ if (!im) {
+ return NULL;
+ }
+ argb = WebPDecodeARGB(filedata, size, &width, &height);
+ if (!argb) {
+ gd_error("gd-webp cannot allocate temporary buffer");
+ gdFree(argb);
+ return NULL;
+ }
+ for (y = 0, p = argb; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ register uint8_t a = gdAlphaMax - (*(p++) >> 1);
+ register uint8_t r = *(p++);
+ register uint8_t g = *(p++);
+ register uint8_t b = *(p++);
+ im->tpixels[y][x] = gdTrueColorAlpha(r, g, b, a);
+ }
+ }
+ gdFree(filedata);
+ free(argb);
+ im->saveAlphaFlag = 1;
return im;
}
+void gdImageWebpCtx (gdImagePtr im, gdIOCtx * outfile, int quantization)
+{
+ uint8_t *argb;
+ int x, y;
+ uint8_t *p;
+ uint8_t *out;
+ size_t out_size;
+
+ if (im == NULL) {
+ return;
+ }
+
+ if (!gdImageTrueColor(im)) {
+ gd_error("Paletter image not supported by webp");
+ return;
+ }
+
+ if (quantization == -1) {
+ quantization = 80;
+ }
+
+ argb = (uint8_t *)gdMalloc(gdImageSX(im) * 4 * gdImageSY(im));
+ if (!argb) {
+ return;
+ }
+ p = argb;
+ for (y = 0; y < gdImageSY(im); y++) {
+ for (x = 0; x < gdImageSX(im); x++) {
+ register int c;
+ register char a;
+ c = im->tpixels[y][x];
+ a = gdTrueColorGetAlpha(c);
+ if (a == 127) {
+ a = 0;
+ } else {
+ a = 255 - ((a << 1) + (a >> 6));
+ }
+ *(p++) = gdTrueColorGetRed(c);
+ *(p++) = gdTrueColorGetGreen(c);
+ *(p++) = gdTrueColorGetBlue(c);
+ *(p++) = a;
+ }
+ }
+ out_size = WebPEncodeRGBA(argb, gdImageSX(im), gdImageSY(im), gdImageSX(im) * 4, quantization, &out);
+ printf("outsize: %i\n", out_size);
+ if (out_size == 0) {
+ gd_error("gd-webp encoding failed");
+ goto freeargb;
+ }
+ gdPutBuf(out, out_size, outfile);
+ free(out);
+
+freeargb:
+ gdFree(argb);
+}
+
BGD_DECLARE(void) gdImageWebpEx (gdImagePtr im, FILE * outFile, int quantization)
{
gdIOCtx *out = gdNewFileCtx(outFile);
@@ -116,7 +152,7 @@ BGD_DECLARE(void) gdImageWebpEx (gdImagePtr im, FILE * outFile, int quantization
BGD_DECLARE(void) gdImageWebp (gdImagePtr im, FILE * outFile)
{
gdIOCtx *out = gdNewFileCtx(outFile);
- gdImageWebpCtx(im, out, -1);
+ gdImageWebpCtx(im, out, -1);
out->gd_free(out);
}
@@ -140,75 +176,4 @@ BGD_DECLARE(void *) gdImageWebpPtrEx (gdImagePtr im, int *size, int quantization
out->gd_free(out);
return rv;
}
-
-/*
- * Maps normalized QP (quality) to VP8 QP
- */
-int mapQualityToVP8QP(int quality) {
-#define MIN_QUALITY 0
-#define MAX_QUALITY 100
-#define MIN_VP8QP 1
-#define MAX_VP8QP 63
- const float scale = MAX_VP8QP - MIN_VP8QP;
- const float vp8qp =
- scale * (MAX_QUALITY - quality) / (MAX_QUALITY - MIN_QUALITY) + MIN_VP8QP;
- if (quality < MIN_QUALITY || quality > MAX_QUALITY) {
- gd_error("Wrong quality value %d.", quality);
- return -1;
- }
-
- return (int)(vp8qp + 0.5);
-}
-
-/* This routine is based in part on code from Dale Lutz (Safe Software Inc.)
- * and in part on demo code from Chapter 15 of "PNG: The Definitive Guide"
- * (http://www.cdrom.com/pub/png/pngbook.html).
- */
-BGD_DECLARE(void) gdImageWebpCtx (gdImagePtr im, gdIOCtx * outfile, int quantization)
-{
- int width = im->sx;
- int height = im->sy;
-
- int yuv_width, yuv_height, yuv_nbytes, ret;
- int vp8_quality;
- unsigned char *Y = NULL,
- *U = NULL,
- *V = NULL;
- unsigned char *filedata = NULL;
-
- /* Conversion to Y,U,V buffer */
- yuv_width = (width + 1) >> 1;
- yuv_height = (height + 1) >> 1;
- yuv_nbytes = width * height + 2 * yuv_width * yuv_height;
-
- if ((Y = (unsigned char *)gdCalloc(yuv_nbytes, sizeof(unsigned char))) == NULL) {
- gd_error("gd-webp error: cannot allocate Y buffer");
- return;
- }
- if (quantization == -1) {
- quantization = 80;
- }
- vp8_quality = mapQualityToVP8QP(quantization);
-
- U = Y + width * height;
- V = U + yuv_width * yuv_height;
- gd_RGBAToYUV420(im, Y, U, V);
-
- /* Encode Y,U,V and write data to file */
- ret = WebPEncode(Y, U, V, width, height, width, yuv_width, yuv_height, yuv_width,
- vp8_quality, &filedata, &yuv_nbytes, NULL);
- gdFree(Y);
-
- if (ret != webp_success) {
- if (filedata) {
- free(filedata);
- }
- gd_error("gd-webp error: WebP Encoder failed");
- return;
- }
-
- gdPutBuf (filedata, yuv_nbytes, outfile);
- free(filedata);
-}
-
-#endif /* HAVE_LIBVPX */
+#endif /* HAVE_LIBWEBP */
--
2.3.5
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