mirror of
https://github.com/webmproject/libwebp.git
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apply clang-format
(Debian clang-format version 19.1.7 (3+build4)) with `--style=Google`. Manual changes: * clang-format disabled around macros with stringification (mostly assembly) * some inline assembly strings were adjusted to avoid awkward line breaks * trailing commas, `//` or suffixes (`ull`) added to help array formatting * thread_utils.c: parameter comments were changed to the more common /*...=*/ style to improve formatting The automatically generated code under swig/ was skipped. Bug: 433996651 Change-Id: Iea3f24160d78d2a2653971cdf13fa932e47ff1b3
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@@ -48,7 +48,7 @@ static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
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reader = WebPGuessImageReader(data, data_size);
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ok = reader(data, data_size, pic, keep_alpha, NULL);
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End:
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End:
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if (!ok) {
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WFPRINTF(stderr, "Error! Could not process file %s\n",
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(const W_CHAR*)filename);
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@@ -57,8 +57,8 @@ static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
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return ok ? data_size : 0;
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}
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static void RescalePlane(uint8_t* plane, int width, int height,
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int x_stride, int y_stride, int max) {
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static void RescalePlane(uint8_t* plane, int width, int height, int x_stride,
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int y_stride, int max) {
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const uint32_t factor = (max > 0) ? (255u << 16) / max : 0;
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int x, y;
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for (y = 0; y < height; ++y) {
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@@ -71,9 +71,9 @@ static void RescalePlane(uint8_t* plane, int width, int height,
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}
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// Return the max absolute difference.
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static int DiffScaleChannel(uint8_t* src1, int stride1,
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const uint8_t* src2, int stride2,
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int x_stride, int w, int h, int do_scaling) {
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static int DiffScaleChannel(uint8_t* src1, int stride1, const uint8_t* src2,
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int stride2, int x_stride, int w, int h,
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int do_scaling) {
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int x, y;
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int max = 0;
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for (y = 0; y < h; ++y) {
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@@ -95,7 +95,7 @@ static int DiffScaleChannel(uint8_t* src1, int stride1,
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// breaking the library's hidden visibility. This code duplication avoids the
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// bigger annoyance of having to open up internal details of libdsp...
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#define SSIM_KERNEL 3 // total size of the kernel: 2 * SSIM_KERNEL + 1
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#define SSIM_KERNEL 3 // total size of the kernel: 2 * SSIM_KERNEL + 1
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// struct for accumulating statistical moments
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typedef struct {
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@@ -105,19 +105,19 @@ typedef struct {
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} DistoStats;
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// hat-shaped filter. Sum of coefficients is equal to 16.
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static const uint32_t kWeight[2 * SSIM_KERNEL + 1] = { 1, 2, 3, 4, 3, 2, 1 };
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static const uint32_t kWeight[2 * SSIM_KERNEL + 1] = {1, 2, 3, 4, 3, 2, 1};
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static WEBP_INLINE double SSIMCalculation(const DistoStats* const stats) {
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const uint32_t N = stats->w;
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const uint32_t w2 = N * N;
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const uint32_t w2 = N * N;
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const uint32_t C1 = 20 * w2;
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const uint32_t C2 = 60 * w2;
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const uint32_t C3 = 8 * 8 * w2; // 'dark' limit ~= 6
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const uint32_t C3 = 8 * 8 * w2; // 'dark' limit ~= 6
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const uint64_t xmxm = (uint64_t)stats->xm * stats->xm;
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const uint64_t ymym = (uint64_t)stats->ym * stats->ym;
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if (xmxm + ymym >= C3) {
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const int64_t xmym = (int64_t)stats->xm * stats->ym;
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const int64_t sxy = (int64_t)stats->xym * N - xmym; // can be negative
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const int64_t sxy = (int64_t)stats->xym * N - xmym; // can be negative
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const uint64_t sxx = (uint64_t)stats->xxm * N - xmxm;
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const uint64_t syy = (uint64_t)stats->yym * N - ymym;
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// we descale by 8 to prevent overflow during the fnum/fden multiply.
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@@ -129,13 +129,13 @@ static WEBP_INLINE double SSIMCalculation(const DistoStats* const stats) {
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assert(r >= 0. && r <= 1.0);
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return r;
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}
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return 1.; // area is too dark to contribute meaningfully
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return 1.; // area is too dark to contribute meaningfully
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}
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static double SSIMGetClipped(const uint8_t* src1, int stride1,
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const uint8_t* src2, int stride2,
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int xo, int yo, int W, int H) {
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DistoStats stats = { 0, 0, 0, 0, 0, 0 };
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const uint8_t* src2, int stride2, int xo, int yo,
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int W, int H) {
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DistoStats stats = {0, 0, 0, 0, 0, 0};
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const int ymin = (yo - SSIM_KERNEL < 0) ? 0 : yo - SSIM_KERNEL;
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const int ymax = (yo + SSIM_KERNEL > H - 1) ? H - 1 : yo + SSIM_KERNEL;
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const int xmin = (xo - SSIM_KERNEL < 0) ? 0 : xo - SSIM_KERNEL;
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@@ -145,13 +145,13 @@ static double SSIMGetClipped(const uint8_t* src1, int stride1,
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src2 += ymin * stride2;
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for (y = ymin; y <= ymax; ++y, src1 += stride1, src2 += stride2) {
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for (x = xmin; x <= xmax; ++x) {
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const uint32_t w = kWeight[SSIM_KERNEL + x - xo]
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* kWeight[SSIM_KERNEL + y - yo];
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const uint32_t w =
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kWeight[SSIM_KERNEL + x - xo] * kWeight[SSIM_KERNEL + y - yo];
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const uint32_t s1 = src1[x];
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const uint32_t s2 = src2[x];
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stats.w += w;
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stats.xm += w * s1;
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stats.ym += w * s2;
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stats.w += w;
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stats.xm += w * s1;
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stats.ym += w * s2;
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stats.xxm += w * s1 * s1;
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stats.xym += w * s1 * s2;
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stats.yym += w * s2 * s2;
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@@ -161,9 +161,9 @@ static double SSIMGetClipped(const uint8_t* src1, int stride1,
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}
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// Compute SSIM-score map. Return -1 in case of error, max diff otherwise.
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static int SSIMScaleChannel(uint8_t* src1, int stride1,
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const uint8_t* src2, int stride2,
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int x_stride, int w, int h, int do_scaling) {
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static int SSIMScaleChannel(uint8_t* src1, int stride1, const uint8_t* src2,
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int stride2, int x_stride, int w, int h,
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int do_scaling) {
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int x, y;
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int max = 0;
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uint8_t* const plane1 = (uint8_t*)malloc(2 * w * h * sizeof(*plane1));
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@@ -205,8 +205,8 @@ static void ConvertToGray(WebPPicture* const pic) {
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for (x = 0; x < pic->width; ++x) {
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const uint32_t argb = row[x];
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const uint32_t r = (argb >> 16) & 0xff;
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const uint32_t g = (argb >> 8) & 0xff;
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const uint32_t b = (argb >> 0) & 0xff;
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const uint32_t g = (argb >> 8) & 0xff;
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const uint32_t b = (argb >> 0) & 0xff;
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// We use BT.709 for converting to luminance.
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const uint32_t Y = (uint32_t)(0.2126 * r + 0.7152 * g + 0.0722 * b + .5);
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row[x] = (argb & 0xff000000u) | (Y * 0x010101u);
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@@ -297,8 +297,7 @@ int main(int argc, const char* argv[]) {
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fprintf(stderr, "Error while computing the distortion.\n");
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goto End;
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}
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printf("%u %.2f %.2f %.2f %.2f %.2f [ %.2f bpp ]\n",
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(unsigned int)size1,
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printf("%u %.2f %.2f %.2f %.2f %.2f [ %.2f bpp ]\n", (unsigned int)size1,
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disto[4], disto[0], disto[1], disto[2], disto[3],
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8.f * size1 / pic1.width / pic1.height);
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@@ -306,21 +305,25 @@ int main(int argc, const char* argv[]) {
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uint8_t* data = NULL;
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size_t data_size = 0;
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if (pic1.use_argb != pic2.use_argb) {
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fprintf(stderr, "Pictures are not in the same argb format. "
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"Can't save the difference map.\n");
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fprintf(stderr,
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"Pictures are not in the same argb format. "
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"Can't save the difference map.\n");
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goto End;
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}
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if (pic1.use_argb) {
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int n;
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fprintf(stderr, "max differences per channel: ");
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for (n = 0; n < 3; ++n) { // skip the alpha channel
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const int range = (type == 1) ?
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SSIMScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
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(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
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4, pic1.width, pic1.height, scale) :
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DiffScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
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(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
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4, pic1.width, pic1.height, scale);
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for (n = 0; n < 3; ++n) { // skip the alpha channel
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const int range =
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(type == 1)
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? SSIMScaleChannel(
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(uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
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(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4,
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pic1.width, pic1.height, scale)
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: DiffScaleChannel(
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(uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
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(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4,
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pic1.width, pic1.height, scale);
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if (range < 0) fprintf(stderr, "\nError computing diff map\n");
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fprintf(stderr, "[%d]", range);
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}
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@@ -331,10 +334,9 @@ int main(int argc, const char* argv[]) {
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goto End;
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}
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#if !defined(WEBP_REDUCE_CSP)
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data_size = WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb,
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pic1.width, pic1.height,
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pic1.argb_stride * 4,
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&data);
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data_size =
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WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb, pic1.width,
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pic1.height, pic1.argb_stride * 4, &data);
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if (data_size == 0) {
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fprintf(stderr, "Error during lossless encoding.\n");
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goto End;
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@@ -346,14 +348,15 @@ int main(int argc, const char* argv[]) {
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#else
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(void)data;
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(void)data_size;
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fprintf(stderr, "Cannot save the difference map. Please recompile "
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"without the WEBP_REDUCE_CSP flag.\n");
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fprintf(stderr,
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"Cannot save the difference map. Please recompile "
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"without the WEBP_REDUCE_CSP flag.\n");
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goto End;
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#endif // WEBP_REDUCE_CSP
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}
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ret = EXIT_SUCCESS;
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End:
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End:
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WebPPictureFree(&pic1);
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WebPPictureFree(&pic2);
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FREE_WARGV_AND_RETURN(ret);
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