From db7647083d0a5cd2221b94faa15c149214d21725 Mon Sep 17 00:00:00 2001 From: rbpotter Date: Thu, 12 Jan 2017 10:31:43 -0800 Subject: Add postscript path This patch adds the additional functions required to make postscript printing functional. The most significant additions are are two added compression functions and a new API for setting the postscript level. Not currently called from Chromium, Chromium patch to come. BUG= Review-Url: https://codereview.chromium.org/2612243005 --- core/fxcodec/codec/fx_codec_a85_unittest.cpp | 209 +++++++++++++++++++++++++++ 1 file changed, 209 insertions(+) create mode 100644 core/fxcodec/codec/fx_codec_a85_unittest.cpp (limited to 'core/fxcodec/codec/fx_codec_a85_unittest.cpp') diff --git a/core/fxcodec/codec/fx_codec_a85_unittest.cpp b/core/fxcodec/codec/fx_codec_a85_unittest.cpp new file mode 100644 index 0000000000..7910881772 --- /dev/null +++ b/core/fxcodec/codec/fx_codec_a85_unittest.cpp @@ -0,0 +1,209 @@ +// Copyright 2016 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include + +#include + +#include "core/fxcodec/codec/ccodec_basicmodule.h" +#include "core/fxcodec/fx_codec.h" +#include "testing/fx_string_testhelpers.h" +#include "testing/gtest/include/gtest/gtest.h" + +TEST(fxcodec, A85TestBadInputs) { + uint8_t src_buf[4] = {1, 2, 3, 4}; + uint8_t* dest_buf = nullptr; + uint32_t src_size = 4; + uint32_t dest_size = 0; + + CCodec_BasicModule* pEncoders = CCodec_ModuleMgr().GetBasicModule(); + EXPECT_TRUE(pEncoders); + + // Error codes, not segvs, should callers pass us a nullptr pointer. + EXPECT_FALSE(pEncoders->A85Encode(src_buf, src_size, &dest_buf, nullptr)); + EXPECT_FALSE(pEncoders->A85Encode(src_buf, src_size, nullptr, &dest_size)); + EXPECT_FALSE(pEncoders->A85Encode(src_buf, 0, &dest_buf, &dest_size)); + EXPECT_FALSE(pEncoders->A85Encode(nullptr, src_size, &dest_buf, &dest_size)); +} + +// No leftover bytes, just translate 2 sets of symbols. +TEST(fxcodec, A85TestBasic) { + // Make sure really big values don't break. + uint8_t src_buf[8] = {1, 2, 3, 4, 255, 255, 255, 255}; + uint8_t* dest_buf = nullptr; + uint32_t src_size = 8; + uint32_t dest_size = 0; + + CCodec_BasicModule* pEncoders = CCodec_ModuleMgr().GetBasicModule(); + EXPECT_TRUE(pEncoders); + + // Should succeed. + EXPECT_TRUE(pEncoders->A85Encode(src_buf, src_size, &dest_buf, &dest_size)); + + // Should have 5 chars for each set of 4 and 2 terminators. + EXPECT_EQ(12u, dest_size); + uint8_t expected_out[12] = {33, 60, 78, 63, 43, 115, 56, 87, 45, 33, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 12; i++) + EXPECT_EQ(dest_buf[i], expected_out[i]) << " at " << i; + FX_Free(dest_buf); +} + +// Leftover bytes. +TEST(fxcodec, A85TestLeftoverBytes) { + // 1 Leftover Byte: + uint8_t src_buf_1leftover[5] = {1, 2, 3, 4, 255}; + uint8_t* dest_buf = nullptr; + uint32_t src_size = 5; + uint32_t dest_size = 0; + + CCodec_BasicModule* pEncoders = CCodec_ModuleMgr().GetBasicModule(); + EXPECT_TRUE(pEncoders); + + // Should succeed + EXPECT_TRUE( + pEncoders->A85Encode(src_buf_1leftover, src_size, &dest_buf, &dest_size)); + EXPECT_EQ(9u, dest_size); // 5 chars for first symbol + 2 + 2 terminators. + uint8_t expected_out_1leftover[9] = {33, 60, 78, 63, 43, 114, 114, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 9; i++) + EXPECT_EQ(dest_buf[i], expected_out_1leftover[i]) << " at " << i; + FX_Free(dest_buf); + + // 2 Leftover bytes: + src_size++; + dest_buf = nullptr; + dest_size = 0; + uint8_t src_buf_2leftover[6] = {1, 2, 3, 4, 255, 254}; + // Should succeed + EXPECT_TRUE( + pEncoders->A85Encode(src_buf_2leftover, src_size, &dest_buf, &dest_size)); + EXPECT_EQ(10u, dest_size); // 5 chars for first symbol + 3 + 2 terminators. + uint8_t expected_out_2leftover[10] = {33, 60, 78, 63, 43, + 115, 56, 68, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 10; i++) + EXPECT_EQ(dest_buf[i], expected_out_2leftover[i]) << " at " << i; + FX_Free(dest_buf); + + // 3 Leftover bytes: + src_size++; + dest_buf = nullptr; + dest_size = 0; + uint8_t src_buf_3leftover[7] = {1, 2, 3, 4, 255, 254, 253}; + // Should succeed + EXPECT_TRUE( + pEncoders->A85Encode(src_buf_3leftover, src_size, &dest_buf, &dest_size)); + EXPECT_EQ(11u, dest_size); // 5 chars for first symbol + 4 + 2 terminators. + uint8_t expected_out_3leftover[11] = {33, 60, 78, 63, 43, 115, + 56, 77, 114, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 11; i++) + EXPECT_EQ(dest_buf[i], expected_out_3leftover[i]) << " at " << i; + FX_Free(dest_buf); +} + +// Test all zeros comes through as "z". +TEST(fxcodec, A85TestZeros) { + // Make sure really big values don't break. + uint8_t src_buf[8] = {1, 2, 3, 4, 0, 0, 0, 0}; + uint8_t* dest_buf = nullptr; + uint32_t src_size = 8; + uint32_t dest_size = 0; + + CCodec_BasicModule* pEncoders = CCodec_ModuleMgr().GetBasicModule(); + EXPECT_TRUE(pEncoders); + + // Should succeed. + EXPECT_TRUE(pEncoders->A85Encode(src_buf, src_size, &dest_buf, &dest_size)); + + // Should have 5 chars for first set of 4 + 1 for z + 2 terminators. + EXPECT_EQ(8u, dest_size); + uint8_t expected_out[8] = {33, 60, 78, 63, 43, 122, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 8; i++) + EXPECT_EQ(dest_buf[i], expected_out[i]) << " at " << i; + FX_Free(dest_buf); + + // Should also work if it is at the start: + dest_buf = nullptr; + dest_size = 0; + uint8_t src_buf_2[8] = {0, 0, 0, 0, 1, 2, 3, 4}; + + // Should succeed. + EXPECT_TRUE(pEncoders->A85Encode(src_buf_2, src_size, &dest_buf, &dest_size)); + + // Should have 5 chars for set of 4 + 1 for z + 2 terminators. + EXPECT_EQ(8u, dest_size); + uint8_t expected_out_2[8] = {122, 33, 60, 78, 63, 43, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 8; i++) + EXPECT_EQ(dest_buf[i], expected_out_2[i]) << " at " << i; + FX_Free(dest_buf); + + // Try with 2 leftover zero bytes. Make sure we don't get a "z". + src_size = 6; // Cut off the last 2 zeros. + dest_buf = nullptr; + dest_size = 0; + + // Should succeed. + EXPECT_TRUE(pEncoders->A85Encode(src_buf, src_size, &dest_buf, &dest_size)); + + // Should have 5 chars for set of 4 + 3 for last 2 + 2 terminators. + EXPECT_EQ(10u, dest_size); + uint8_t expected_out_leftover[10] = {33, 60, 78, 63, 43, 33, 33, 33, 126, 62}; + + // Check the output + for (uint32_t i = 0; i < 10; i++) + EXPECT_EQ(dest_buf[i], expected_out_leftover[i]) << " at " << i; + FX_Free(dest_buf); +} + +// Make sure we get returns in the expected locations. +TEST(fxcodec, A85TestLineBreaks) { + // Make sure really big values don't break. + uint8_t src_buf[131] = {0}; + // 1 full line + most of a line of normal symbols. + for (int k = 0; k < 116; k += 4) { + src_buf[k] = 1; + src_buf[k + 1] = 2; + src_buf[k + 2] = 3; + src_buf[k + 3] = 4; + } + // Fill in the end, leaving an all zero gap + 3 extra zeros at the end. + for (int k = 120; k < 128; k++) { + src_buf[k] = 1; + src_buf[k + 1] = 2; + src_buf[k + 2] = 3; + src_buf[k + 3] = 4; + } + uint8_t* dest_buf = nullptr; + uint32_t src_size = 131; + uint32_t dest_size = 0; + + CCodec_BasicModule* pEncoders = CCodec_ModuleMgr().GetBasicModule(); + EXPECT_TRUE(pEncoders); + + // Should succeed. + EXPECT_TRUE(pEncoders->A85Encode(src_buf, src_size, &dest_buf, &dest_size)); + + // Should have 75 chars in the first row plus 2 char return, + // 76 chars in the second row plus 2 char return, + // and 9 chars in the last row with 2 terminators. + EXPECT_EQ(166u, dest_size); + + // Check for the returns. + EXPECT_EQ(dest_buf[75], 13); + EXPECT_EQ(dest_buf[76], 10); + EXPECT_EQ(dest_buf[153], 13); + EXPECT_EQ(dest_buf[154], 10); + + FX_Free(dest_buf); +} -- cgit v1.2.3