From e8585bad903bcf8e3a01d2ef20be1ed517a131d4 Mon Sep 17 00:00:00 2001 From: Eirik Aavitsland Date: Thu, 19 Aug 2021 14:50:59 +0200 Subject: Update bundled libwebp to version 1.2.1 [ChangeLog][Third-Party Code] Update bundled libwebp to version 1.2.1 Change-Id: I68082fde6d20d32be87444f471520fb1e8091bf9 Reviewed-by: Qt CI Bot Reviewed-by: Allan Sandfeld Jensen (cherry picked from commit 80786b7a07b631bec56004bfeb67cb4157805268) Reviewed-by: Eirik Aavitsland --- src/3rdparty/libwebp/src/utils/rescaler_utils.c | 114 +++++++++++++----------- 1 file changed, 63 insertions(+), 51 deletions(-) (limited to 'src/3rdparty/libwebp/src/utils/rescaler_utils.c') diff --git a/src/3rdparty/libwebp/src/utils/rescaler_utils.c b/src/3rdparty/libwebp/src/utils/rescaler_utils.c index 4bcae24..a0581a1 100644 --- a/src/3rdparty/libwebp/src/utils/rescaler_utils.c +++ b/src/3rdparty/libwebp/src/utils/rescaler_utils.c @@ -12,66 +12,74 @@ // Author: Skal (pascal.massimino@gmail.com) #include +#include #include #include #include "src/dsp/dsp.h" #include "src/utils/rescaler_utils.h" +#include "src/utils/utils.h" //------------------------------------------------------------------------------ -void WebPRescalerInit(WebPRescaler* const wrk, int src_width, int src_height, - uint8_t* const dst, - int dst_width, int dst_height, int dst_stride, - int num_channels, rescaler_t* const work) { +int WebPRescalerInit(WebPRescaler* const rescaler, + int src_width, int src_height, + uint8_t* const dst, + int dst_width, int dst_height, int dst_stride, + int num_channels, rescaler_t* const work) { const int x_add = src_width, x_sub = dst_width; const int y_add = src_height, y_sub = dst_height; - wrk->x_expand = (src_width < dst_width); - wrk->y_expand = (src_height < dst_height); - wrk->src_width = src_width; - wrk->src_height = src_height; - wrk->dst_width = dst_width; - wrk->dst_height = dst_height; - wrk->src_y = 0; - wrk->dst_y = 0; - wrk->dst = dst; - wrk->dst_stride = dst_stride; - wrk->num_channels = num_channels; + const uint64_t total_size = 2ull * dst_width * num_channels * sizeof(*work); + if (!CheckSizeOverflow(total_size)) return 0; + + rescaler->x_expand = (src_width < dst_width); + rescaler->y_expand = (src_height < dst_height); + rescaler->src_width = src_width; + rescaler->src_height = src_height; + rescaler->dst_width = dst_width; + rescaler->dst_height = dst_height; + rescaler->src_y = 0; + rescaler->dst_y = 0; + rescaler->dst = dst; + rescaler->dst_stride = dst_stride; + rescaler->num_channels = num_channels; // for 'x_expand', we use bilinear interpolation - wrk->x_add = wrk->x_expand ? (x_sub - 1) : x_add; - wrk->x_sub = wrk->x_expand ? (x_add - 1) : x_sub; - if (!wrk->x_expand) { // fx_scale is not used otherwise - wrk->fx_scale = WEBP_RESCALER_FRAC(1, wrk->x_sub); + rescaler->x_add = rescaler->x_expand ? (x_sub - 1) : x_add; + rescaler->x_sub = rescaler->x_expand ? (x_add - 1) : x_sub; + if (!rescaler->x_expand) { // fx_scale is not used otherwise + rescaler->fx_scale = WEBP_RESCALER_FRAC(1, rescaler->x_sub); } // vertical scaling parameters - wrk->y_add = wrk->y_expand ? y_add - 1 : y_add; - wrk->y_sub = wrk->y_expand ? y_sub - 1 : y_sub; - wrk->y_accum = wrk->y_expand ? wrk->y_sub : wrk->y_add; - if (!wrk->y_expand) { + rescaler->y_add = rescaler->y_expand ? y_add - 1 : y_add; + rescaler->y_sub = rescaler->y_expand ? y_sub - 1 : y_sub; + rescaler->y_accum = rescaler->y_expand ? rescaler->y_sub : rescaler->y_add; + if (!rescaler->y_expand) { // This is WEBP_RESCALER_FRAC(dst_height, x_add * y_add) without the cast. - // Its value is <= WEBP_RESCALER_ONE, because dst_height <= wrk->y_add, and - // wrk->x_add >= 1; - const uint64_t ratio = - (uint64_t)dst_height * WEBP_RESCALER_ONE / (wrk->x_add * wrk->y_add); + // Its value is <= WEBP_RESCALER_ONE, because dst_height <= rescaler->y_add + // and rescaler->x_add >= 1; + const uint64_t num = (uint64_t)dst_height * WEBP_RESCALER_ONE; + const uint64_t den = (uint64_t)rescaler->x_add * rescaler->y_add; + const uint64_t ratio = num / den; if (ratio != (uint32_t)ratio) { // When ratio == WEBP_RESCALER_ONE, we can't represent the ratio with the // current fixed-point precision. This happens when src_height == - // wrk->y_add (which == src_height), and wrk->x_add == 1. + // rescaler->y_add (which == src_height), and rescaler->x_add == 1. // => We special-case fxy_scale = 0, in WebPRescalerExportRow(). - wrk->fxy_scale = 0; + rescaler->fxy_scale = 0; } else { - wrk->fxy_scale = (uint32_t)ratio; + rescaler->fxy_scale = (uint32_t)ratio; } - wrk->fy_scale = WEBP_RESCALER_FRAC(1, wrk->y_sub); + rescaler->fy_scale = WEBP_RESCALER_FRAC(1, rescaler->y_sub); } else { - wrk->fy_scale = WEBP_RESCALER_FRAC(1, wrk->x_add); - // wrk->fxy_scale is unused here. + rescaler->fy_scale = WEBP_RESCALER_FRAC(1, rescaler->x_add); + // rescaler->fxy_scale is unused here. } - wrk->irow = work; - wrk->frow = work + num_channels * dst_width; - memset(work, 0, 2 * dst_width * num_channels * sizeof(*work)); + rescaler->irow = work; + rescaler->frow = work + num_channels * dst_width; + memset(work, 0, (size_t)total_size); WebPRescalerDspInit(); + return 1; } int WebPRescalerGetScaledDimensions(int src_width, int src_height, @@ -82,6 +90,7 @@ int WebPRescalerGetScaledDimensions(int src_width, int src_height, { int width = *scaled_width; int height = *scaled_height; + const int max_size = INT_MAX / 2; // if width is unspecified, scale original proportionally to height ratio. if (width == 0 && src_height > 0) { @@ -94,7 +103,7 @@ int WebPRescalerGetScaledDimensions(int src_width, int src_height, (int)(((uint64_t)src_height * width + src_width - 1) / src_width); } // Check if the overall dimensions still make sense. - if (width <= 0 || height <= 0) { + if (width <= 0 || height <= 0 || width > max_size || height > max_size) { return 0; } @@ -107,31 +116,34 @@ int WebPRescalerGetScaledDimensions(int src_width, int src_height, //------------------------------------------------------------------------------ // all-in-one calls -int WebPRescaleNeededLines(const WebPRescaler* const wrk, int max_num_lines) { - const int num_lines = (wrk->y_accum + wrk->y_sub - 1) / wrk->y_sub; +int WebPRescaleNeededLines(const WebPRescaler* const rescaler, + int max_num_lines) { + const int num_lines = + (rescaler->y_accum + rescaler->y_sub - 1) / rescaler->y_sub; return (num_lines > max_num_lines) ? max_num_lines : num_lines; } -int WebPRescalerImport(WebPRescaler* const wrk, int num_lines, +int WebPRescalerImport(WebPRescaler* const rescaler, int num_lines, const uint8_t* src, int src_stride) { int total_imported = 0; - while (total_imported < num_lines && !WebPRescalerHasPendingOutput(wrk)) { - if (wrk->y_expand) { - rescaler_t* const tmp = wrk->irow; - wrk->irow = wrk->frow; - wrk->frow = tmp; + while (total_imported < num_lines && + !WebPRescalerHasPendingOutput(rescaler)) { + if (rescaler->y_expand) { + rescaler_t* const tmp = rescaler->irow; + rescaler->irow = rescaler->frow; + rescaler->frow = tmp; } - WebPRescalerImportRow(wrk, src); - if (!wrk->y_expand) { // Accumulate the contribution of the new row. + WebPRescalerImportRow(rescaler, src); + if (!rescaler->y_expand) { // Accumulate the contribution of the new row. int x; - for (x = 0; x < wrk->num_channels * wrk->dst_width; ++x) { - wrk->irow[x] += wrk->frow[x]; + for (x = 0; x < rescaler->num_channels * rescaler->dst_width; ++x) { + rescaler->irow[x] += rescaler->frow[x]; } } - ++wrk->src_y; + ++rescaler->src_y; src += src_stride; ++total_imported; - wrk->y_accum -= wrk->y_sub; + rescaler->y_accum -= rescaler->y_sub; } return total_imported; } -- cgit v1.2.3