mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-20 12:28:26 +01:00
6c76d28e4b
similar to Java, simple interface only
Change-Id: I8a3d344e5d89f73627e4e0cb2067512260d46fdd
(cherry picked from commit f980faf417)
324 lines
11 KiB
OpenEdge ABL
324 lines
11 KiB
OpenEdge ABL
// Copyright 2011 Google Inc.
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//
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// This code is licensed under the same terms as WebM:
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// Software License Agreement: http://www.webmproject.org/license/software/
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// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
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// -----------------------------------------------------------------------------
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//
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// libwebp swig interface definition
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//
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// Author: James Zern (jzern@google.com)
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/*
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Java bindings:
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$ mkdir -p java/com/google/webp
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$ swig -java \
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-package com.google.webp \
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-outdir java/com/google/webp \
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-o libwebp_java_wrap.c libwebp.i
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Python bindings:
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$ swig -python \
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-outdir . \
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-o libwebp_python_wrap.c libwebp.i
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*/
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#ifdef SWIGPYTHON
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%module(package="com.google.webp") libwebp
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#else
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%module libwebp
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#endif /* SWIGPYTHON */
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%include "constraints.i"
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%include "typemaps.i"
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#ifdef SWIGJAVA
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%include "arrays_java.i";
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%include "enums.swg" /*NB: requires JDK-1.5+
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See: http://www.swig.org/Doc1.3/Java.html#enumerations */
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// map uint8_t* such that a byte[] is used
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// this will generate a few spurious warnings in the wrapper code
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%apply signed char[] { uint8_t* }
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#endif /* SWIGJAVA */
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#ifdef SWIGPYTHON
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%apply (char* STRING, size_t LENGTH) { (const uint8_t* data, size_t data_size) }
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%typemap(out) uint8_t* {
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$result = PyString_FromStringAndSize(
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(const char*)$1, ReturnedBufferSize("$symname", arg3, arg4));
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}
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#endif /* SWIGPYTHON */
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//------------------------------------------------------------------------------
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// Decoder specific
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%apply int* OUTPUT { int* width, int* height }
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// free the buffer returned by these functions after copying into
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// the native type
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%newobject WebPDecodeRGB;
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%newobject WebPDecodeRGBA;
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%newobject WebPDecodeARGB;
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%newobject WebPDecodeBGR;
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%newobject WebPDecodeBGRA;
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%typemap(newfree) uint8_t* "free($1);"
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int WebPGetDecoderVersion(void);
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int WebPGetInfo(const uint8_t* data, size_t data_size,
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int* width, int* height);
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uint8_t* WebPDecodeRGB(const uint8_t* data, size_t data_size,
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int* width, int* height);
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uint8_t* WebPDecodeRGBA(const uint8_t* data, size_t data_size,
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int* width, int* height);
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uint8_t* WebPDecodeARGB(const uint8_t* data, size_t data_size,
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int* width, int* height);
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uint8_t* WebPDecodeBGR(const uint8_t* data, size_t data_size,
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int* width, int* height);
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uint8_t* WebPDecodeBGRA(const uint8_t* data, size_t data_size,
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int* width, int* height);
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//------------------------------------------------------------------------------
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// Encoder specific
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int WebPGetEncoderVersion(void);
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//------------------------------------------------------------------------------
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// Wrapper code additions
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%{
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#include "webp/decode.h"
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#include "webp/encode.h"
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%}
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#ifdef SWIGJAVA
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%{
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#define FillMeInAsSizeCannotBeDeterminedAutomatically \
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(result ? (jint)ReturnedBufferSize(__FUNCTION__, arg3, arg4) : 0)
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%}
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#endif /* SWIGJAVA */
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#if defined(SWIGJAVA) || defined(SWIGPYTHON)
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%{
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static size_t ReturnedBufferSize(
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const char* function, int* width, int* height) {
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static const struct sizemap {
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const char* function;
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int size_multiplier;
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} size_map[] = {
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#ifdef SWIGJAVA
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{ "Java_com_google_webp_libwebpJNI_WebPDecodeRGB", 3 },
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{ "Java_com_google_webp_libwebpJNI_WebPDecodeRGBA", 4 },
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{ "Java_com_google_webp_libwebpJNI_WebPDecodeARGB", 4 },
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{ "Java_com_google_webp_libwebpJNI_WebPDecodeBGR", 3 },
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{ "Java_com_google_webp_libwebpJNI_WebPDecodeBGRA", 4 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeRGB", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeBGR", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeRGBA", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeBGRA", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeLosslessRGB", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeLosslessBGR", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeLosslessRGBA", 1 },
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{ "Java_com_google_webp_libwebpJNI_wrap_1WebPEncodeLosslessBGRA", 1 },
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#endif
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#ifdef SWIGPYTHON
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{ "WebPDecodeRGB", 3 },
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{ "WebPDecodeRGBA", 4 },
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{ "WebPDecodeARGB", 4 },
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{ "WebPDecodeBGR", 3 },
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{ "WebPDecodeBGRA", 4 },
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#endif
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{ NULL, 0 }
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};
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const struct sizemap* p;
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size_t size = 0;
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for (p = size_map; p->function; ++p) {
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if (!strcmp(function, p->function)) {
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size = *width * *height * p->size_multiplier;
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break;
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}
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}
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return size;
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}
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%}
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#endif /* SWIGJAVA || SWIGPYTHON */
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%{
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typedef size_t (*WebPEncodeFunction)(const uint8_t* rgb,
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int width, int height, int stride,
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float quality_factor, uint8_t** output);
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typedef size_t (*WebPEncodeLosslessFunction)(const uint8_t* rgb,
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int width, int height, int stride,
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uint8_t** output);
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static uint8_t* EncodeLossy(const uint8_t* rgb,
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int width, int height, int stride,
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float quality_factor,
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WebPEncodeFunction encfn,
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int* output_size, int* unused) {
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uint8_t* output = NULL;
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const size_t image_size =
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encfn(rgb, width, height, stride, quality_factor, &output);
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// the values of following two will be interpreted by ReturnedBufferSize()
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// as 'width' and 'height' in the size calculation.
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*output_size = image_size;
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*unused = 1;
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return image_size ? output : NULL;
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}
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static uint8_t* EncodeLossless(const uint8_t* rgb,
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int width, int height, int stride,
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WebPEncodeLosslessFunction encfn,
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int* output_size, int* unused) {
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uint8_t* output = NULL;
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const size_t image_size = encfn(rgb, width, height, stride, &output);
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// the values of the following two will be interpreted by
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// ReturnedBufferSize() as 'width' and 'height' in the size calculation.
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*output_size = image_size;
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*unused = 1;
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return image_size ? output : NULL;
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}
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%}
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//------------------------------------------------------------------------------
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// libwebp/encode wrapper functions
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%apply int* INPUT { int* unused1, int* unused2 }
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%apply int* OUTPUT { int* output_size }
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// free the buffer returned by these functions after copying into
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// the native type
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%newobject wrap_WebPEncodeRGB;
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%newobject wrap_WebPEncodeBGR;
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%newobject wrap_WebPEncodeRGBA;
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%newobject wrap_WebPEncodeBGRA;
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%newobject wrap_WebPEncodeLosslessRGB;
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%newobject wrap_WebPEncodeLosslessBGR;
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%newobject wrap_WebPEncodeLosslessRGBA;
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%newobject wrap_WebPEncodeLosslessBGRA;
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#ifdef SWIGJAVA
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// There's no reason to call these directly
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%javamethodmodifiers wrap_WebPEncodeRGB "private";
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%javamethodmodifiers wrap_WebPEncodeBGR "private";
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%javamethodmodifiers wrap_WebPEncodeRGBA "private";
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%javamethodmodifiers wrap_WebPEncodeBGRA "private";
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%javamethodmodifiers wrap_WebPEncodeLosslessRGB "private";
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%javamethodmodifiers wrap_WebPEncodeLosslessBGR "private";
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%javamethodmodifiers wrap_WebPEncodeLosslessRGBA "private";
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%javamethodmodifiers wrap_WebPEncodeLosslessBGRA "private";
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#endif /* SWIGJAVA */
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%inline %{
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// Changes the return type of WebPEncode* to more closely match Decode*.
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// This also makes it easier to wrap the output buffer in a native type rather
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// than dealing with the return pointer.
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// The additional parameters are to allow reuse of ReturnedBufferSize(),
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// unused2 and output_size will be used in this case.
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#define LOSSY_WRAPPER(FUNC) \
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static uint8_t* wrap_##FUNC( \
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const uint8_t* rgb, int* unused1, int* unused2, int* output_size, \
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int width, int height, int stride, float quality_factor) { \
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return EncodeLossy(rgb, width, height, stride, quality_factor, \
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FUNC, output_size, unused2); \
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} \
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LOSSY_WRAPPER(WebPEncodeRGB)
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LOSSY_WRAPPER(WebPEncodeBGR)
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LOSSY_WRAPPER(WebPEncodeRGBA)
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LOSSY_WRAPPER(WebPEncodeBGRA)
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#undef LOSSY_WRAPPER
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#define LOSSLESS_WRAPPER(FUNC) \
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static uint8_t* wrap_##FUNC( \
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const uint8_t* rgb, int* unused1, int* unused2, int* output_size, \
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int width, int height, int stride) { \
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return EncodeLossless(rgb, width, height, stride, \
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FUNC, output_size, unused2); \
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} \
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LOSSLESS_WRAPPER(WebPEncodeLosslessRGB)
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LOSSLESS_WRAPPER(WebPEncodeLosslessBGR)
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LOSSLESS_WRAPPER(WebPEncodeLosslessRGBA)
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LOSSLESS_WRAPPER(WebPEncodeLosslessBGRA)
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#undef LOSSLESS_WRAPPER
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%}
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//------------------------------------------------------------------------------
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// Language specific
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#ifdef SWIGJAVA
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%{
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/* Work around broken gcj jni.h */
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#ifdef __GCJ_JNI_H__
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# undef JNIEXPORT
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# define JNIEXPORT
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# undef JNICALL
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# define JNICALL
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#endif
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%}
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%pragma(java) modulecode=%{
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private static final int UNUSED = 1;
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private static int outputSize[] = { 0 };
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public static byte[] WebPEncodeRGB(byte[] rgb,
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int width, int height, int stride,
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float quality_factor) {
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return wrap_WebPEncodeRGB(
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rgb, UNUSED, UNUSED, outputSize, width, height, stride, quality_factor);
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}
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public static byte[] WebPEncodeBGR(byte[] bgr,
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int width, int height, int stride,
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float quality_factor) {
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return wrap_WebPEncodeBGR(
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bgr, UNUSED, UNUSED, outputSize, width, height, stride, quality_factor);
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}
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public static byte[] WebPEncodeRGBA(byte[] rgba,
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int width, int height, int stride,
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float quality_factor) {
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return wrap_WebPEncodeRGBA(
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rgba, UNUSED, UNUSED, outputSize, width, height, stride, quality_factor);
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}
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public static byte[] WebPEncodeBGRA(byte[] bgra,
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int width, int height, int stride,
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float quality_factor) {
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return wrap_WebPEncodeBGRA(
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bgra, UNUSED, UNUSED, outputSize, width, height, stride, quality_factor);
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}
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public static byte[] WebPEncodeLosslessRGB(
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byte[] rgb, int width, int height, int stride) {
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return wrap_WebPEncodeLosslessRGB(
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rgb, UNUSED, UNUSED, outputSize, width, height, stride);
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}
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public static byte[] WebPEncodeLosslessBGR(
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byte[] bgr, int width, int height, int stride) {
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return wrap_WebPEncodeLosslessBGR(
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bgr, UNUSED, UNUSED, outputSize, width, height, stride);
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}
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public static byte[] WebPEncodeLosslessRGBA(
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byte[] rgba, int width, int height, int stride) {
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return wrap_WebPEncodeLosslessRGBA(
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rgba, UNUSED, UNUSED, outputSize, width, height, stride);
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}
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public static byte[] WebPEncodeLosslessBGRA(
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byte[] bgra, int width, int height, int stride) {
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return wrap_WebPEncodeLosslessBGRA(
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bgra, UNUSED, UNUSED, outputSize, width, height, stride);
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}
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%}
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#endif /* SWIGJAVA */
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