mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2025-12-07 01:06:46 +08:00
e0040eb318
Bug: None Change-Id: I0d9db4b384144523e61ae32b6ab3f72e93a0c265 Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/6138934 Commit-Queue: Frank Barchard <fbarchard@chromium.org> Reviewed-by: Wan-Teh Chang <wtc@google.com>
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* Copyright 2022 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/scale.h" /* For FilterMode */
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#include <assert.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "libyuv/convert_argb.h"
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#include "libyuv/convert_from_argb.h"
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#include "libyuv/row.h"
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#include "libyuv/scale_argb.h"
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#include "libyuv/scale_rgb.h"
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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// Scale a 24 bit image.
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// Converts to ARGB as intermediate step
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LIBYUV_API
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int RGBScale(const uint8_t* src_rgb,
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int src_stride_rgb,
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int src_width,
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int src_height,
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uint8_t* dst_rgb,
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int dst_stride_rgb,
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int dst_width,
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int dst_height,
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enum FilterMode filtering) {
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int r;
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if (!src_rgb || !dst_rgb || src_width <= 0 || src_width > INT_MAX / 4 ||
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src_height == 0 || dst_width <= 0 || dst_width > INT_MAX / 4 ||
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dst_height <= 0) {
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return -1;
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}
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const int abs_src_height = (src_height < 0) ? -src_height : src_height;
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const uint64_t src_argb_size = (uint64_t)src_width * abs_src_height * 4;
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const uint64_t dst_argb_size = (uint64_t)dst_width * dst_height * 4;
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if (src_argb_size > (UINT64_MAX - dst_argb_size)) {
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return -1; // Invalid size.
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}
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const uint64_t argb_size = src_argb_size + dst_argb_size;
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if (argb_size > SIZE_MAX) {
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return -1; // Invalid size.
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}
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uint8_t* src_argb = (uint8_t*)malloc((size_t)argb_size);
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if (!src_argb) {
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return 1; // Out of memory runtime error.
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}
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uint8_t* dst_argb = src_argb + (size_t)src_argb_size;
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r = RGB24ToARGB(src_rgb, src_stride_rgb, src_argb, src_width * 4, src_width,
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src_height);
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if (!r) {
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r = ARGBScale(src_argb, src_width * 4, src_width, abs_src_height, dst_argb,
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dst_width * 4, dst_width, dst_height, filtering);
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if (!r) {
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r = ARGBToRGB24(dst_argb, dst_width * 4, dst_rgb, dst_stride_rgb,
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dst_width, dst_height);
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}
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}
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free(src_argb);
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return r;
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}
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#ifdef __cplusplus
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} // extern "C"
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} // namespace libyuv
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#endif
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