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basis_universal/basisu_tool.cpp
richgel999 ab722fa2e1 - Adding support for skip blocks, i-frames and p-frames to the backend and transcoder, for texture video use. 
- For PVRTC1, we now memset() any extra blocks after the blocks we know will be transcoded into. This is done because in GL there is padding that occurs on textures smaller than 8x8.
- Removing all OpenMP usage and replacing it with a basis C++11 job system.
- Fixing TSVQ class so it can split very long "thin" clusters that before weren't being split. This improves endpoint quantization on videos and complex 2D textures.
- More frontend perf. optimizations.

Tested on OSX, Linux with gcc/clang, and Win using MSVC 2019.
2019-06-07 20:35:38 -07:00

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// basisu_tool.cpp
// Copyright (C) 2017-2019 Binomial LLC. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "transcoder/basisu.h"
#include "transcoder/basisu_transcoder_internal.h"
#include "basisu_enc.h"
#include "basisu_etc.h"
#include "basisu_gpu_texture.h"
#include "basisu_frontend.h"
#include "basisu_backend.h"
#include "transcoder/basisu_global_selector_palette.h"
#include "basisu_comp.h"
#include "transcoder/basisu_transcoder.h"
#include "basisu_ssim.h"
#define BASISU_CATCH_EXCEPTIONS 1
using namespace basisu;
#define BASISU_TOOL_VERSION "1.08.00"
enum tool_mode
{
cDefault,
cCompress,
cValidate,
cUnpack,
cCompare
};
static void print_usage()
{
printf("\nUsage: basisu filename [filename ...] <options>\n");
puts("\n"
"The default mode is compression of one or more PNG files to a .basis file. Alternate modes:\n"
" -unpack: Use transcoder to unpack .basis file to one or more .ktx/.png files\n"
" -validate: Validate and display information about a .basis file\n"
" -compare: Compare two PNG images specified with -file, output PSNR and SSIM statistics and RGB/A delta images\n"
"Unless an explicit mode is specified, if one or more files have the .basis extension this tool defaults to unpack mode.\n"
"\n"
"Important: By default, the compressor assumes the input is in the sRGB colorspace (like photos/albedo textures).\n"
"If the input is NOT sRGB (like a normal map), be sure to specify -linear for less artifacts. Depending on the content type, some experimentation may be needed.\n"
"\n"
"Filenames prefixed with a @ symbol are read as filename listing files. Listing text files specify which actual filenames to process (one filename per line).\n"
"\n"
"Options:\n"
" -file filename.png: Input image filename, multiple images are OK, use -file X for each input filename (prefixing input filenames with -file is optional)\n"
" -alpha_file filename.png: Input alpha image filename, multiple images are OK, use -file X for each input filename (must be paired with -file), images converted to REC709 grayscale and used as input alpha\n"
" -multifile_printf: printf() format strint to use to compose multiple filenames\n"
" -multifile_first: The index of the first file to process, default is 0 (must specify -multifile_printf and -multifile_num)\n"
" -multifile_num: The total number of files to process.\n"
" -level X: Set encoding speed vs. quality tradeoff. Range is 0-5, default is 1. Higher values=slower, but higher quality.\n"
" -q X: Set quality level, 1-255, default is 128, lower=better compression/lower quality/faster, higher=less compression/higher quality/slower, default is 128. For even higher quality, use -max_endpoints/-max_selectors.\n"
" -linear: Use linear colorspace metrics (instead of the default sRGB), and by default linear (not sRGB) mipmap filtering.\n"
" -output_file filename: Output .basis/.ktx filename\n"
" -output_path: Output .basis/.ktx files to specified directory.\n"
" -debug: Enable codec debug print to stdout (slightly slower).\n"
" -debug_images: Enable codec debug images (much slower).\n"
" -stats: Compute and display image quality metrics (slightly slower).\n"
" -tex_type <2d, 2darray, 3d, video, cubemap>: Set Basis file header's texture type field. Cubemap arrays require multiples of 6 images, in X+, X-, Y+, Y-, Z+, Z- order, each image must be the same resolutions.\n"
" 2d=arbitrary 2D images, 2darray=2D array, 3D=volume texture slices, video=video frames, cubemap=array of faces. For 2darray/3d/cubemaps/video, each source image's dimensions and # of mipmap levels must be the same.\n"
" For video, the .basis file will be written with the first frame being an I-Frame, and subsequent frames being P-Frames (using conditional replenishment). Playback must always occur in order from first to last image.\n"
" -framerate X: Set framerate in header to X/frames sec.\n"
" -individual: Process input images individually and output multiple .basis files (not as a texture array)\n"
" -fuzz_testing: Use with -validate: Disables CRC16 validation of file contents before transcoding\n"
"\n"
"More options:\n"
" -max_endpoints X: Manually set the max number of color endpoint clusters from 1-16128, use instead of -q\n"
" -max_selectors X: Manually set the max number of color selector clusters from 1-16128, use instead of -q\n"
" -y_flip: Flip input images vertically before compression\n"
" -normal_map: Tunes codec parameters for better quality on normal maps (linear colorspace metrics, linear mipmap filtering, no selector RDO, no sRGB)\n"
" -no_alpha: Always output non-alpha basis files, even if one or more inputs has alpha\n"
" -force_alpha: Always output alpha basis files, even if no inputs has alpha\n"
" -seperate_rg_to_color_alpha: Seperate input R and G channels to RGB and A (for tangent space XY normal maps)\n"
" -no_multithreading: Disable multithreading\n"
" -no_ktx: Disable KTX writing when unpacking (faster)\n"
" -etc1_only: Only unpack to ETC1, skipping the other texture formats during -unpack\n"
" -disable_hierarchical_endpoint_codebooks: Disable hierarchical endpoint codebook usage, slower but higher quality on some compression levels\n"
"\n"
"Mipmap generation options:\n"
" -mipmap: Generate mipmaps for each source image\n"
" -mip_srgb: Convert image to linear before filtering, then back to sRGB\n"
" -mip_linear: Keep image in linear light during mipmap filtering\n"
" -mip_scale X: Set mipmap filter kernel's scale, lower=sharper, higher=more blurry, default is 1.0\n"
" -mip_filter X: Set mipmap filter kernel, default is kaiser, filters: box, tent, bell, blackman, catmullrom, mitchell, etc.\n"
" -mip_renorm: Renormalize normal map to unit length vectors after filtering\n"
" -mip_clamp: Use clamp addressing on borders, instead of wrapping\n"
" -mip_smallest X: Set smallest pixel dimension for generated mipmaps, default is 1 pixel\n"
"By default, mipmap filtering will occur in sRGB space (for the RGB color channels) unless -linear is specified. You can override this behavior with -mip_srgb/-mip_linear.\n"
"\n"
"Backend endpoint/selector RDO codec options:\n"
" -no_selector_rdo: Disable backend's selector rate distortion optimizations (slightly faster, less noisy output, but lower quality per output bit)\n"
" -selector_rdo_thresh X: Set selector RDO quality threshold, default is 1.25, lower is higher quality but less quality per output bit (try 1.0-3.0)\n"
" -no_endpoint_rdo: Disable backend's endpoint rate distortion optimizations (slightly faster, less noisy output, but lower quality per output bit)\n"
" -endpoint_rdo_thresh X: Set endpoint RDO quality threshold, default is 1.5, lower is higher quality but less quality per output bit (try 1.0-3.0)\n"
"\n"
"Hierarchical virtual selector codebook options:\n"
" -global_sel_pal: Always use vitual selector palettes (instead of custom palettes), slightly smaller files, but lower quality, slower encoding\n"
" -no_auto_global_sel_pal: Don't automatically use virtual selector palettes on small images\n"
" -no_hybrid_sel_cb: Don't automatically use hybrid virtual selector codebooks (for higher quality, only active when -global_sel_pal is specified)\n"
" -global_pal_bits X: Set virtual selector codebook palette bits, range is [0,12], default is 8, higher is slower/better quality\n"
" -global_mod_bits X: Set virtual selector codebook modifier bits, range is [0,15], defualt is 8, higher is slower/better quality\n"
" -hybrid_sel_cb_quality_thresh X: Set hybrid selector codebook quality threshold, default is 2.0, try 1.5-3, higher is lower quality/smaller codebooks\n"
"\n"
"Set various fields in the Basis file header:\n"
" -userdata0 X: Set 32-bit userdata0 field in Basis file header to X (X is a signed 32-bit int)\n"
" -userdata1 X: Set 32-bit userdata1 field in Basis file header to X (X is a signed 32-bit int)\n"
"\n"
"Various command line examples:\n"
" basisu x.png : Compress sRGB image x.png to x.basis using default settings (multiple filenames OK)\n"
" basisu x.basis : Unpack x.basis to PNG/KTX files (multiple filenames OK)\n"
" basisu -file x.png -mipmap -y_flip : Compress a mipmapped x.basis file from an sRGB image named x.png, Y flip each source image\n"
" basisu -validate -file x.basis : Validate x.basis (check header, check file CRC's, attempt to transcode all slices)\n"
" basisu -unpack -file x.basis : Validates, transcodes and unpacks x.basis to mipmapped .KTX and RGB/A .PNG files (transcodes to all supported GPU texture formats)\n"
" basisu -q 255 -file x.png -mipmap -debug -stats : Compress sRGB x.png to x.basis at quality level 255 with compressor debug output/statistics\n"
" basisu -linear -max_endpoints 16128 -max_selectors 16128 -file x.png : Compress non-sRGB x.png to x.basis using the largest supported manually specified codebook sizes\n"
" basisu -linear -global_sel_pal -no_hybrid_sel_cb -file x.png : Compress a non-sRGB image, use virtual selector codebooks for improved compression (but slower encoding)\n"
" basisu -linear -global_sel_pal -file x.png: Compress a non-sRGB image, use hybrid selector codebooks for slightly improved compression (but slower encoding)\n"
" basisu -tex_type video -framerate 20 -multifile_printf \"x%02u.png\" -multifile_first 1 -multifile_count 20 : Compress a 20 sRGB source image video sequence (x01.png, x02.png, x03.png, etc.) to x01.basis\n"
"\n"
"Note: For video use, it's recommended you use a very powerful machine with many cores. Use -slower for better codebook generation, specify very large codebooks using -max_endpoints and -max_selectors, and reduce\n"
"the default endpoint RDO threshold (-endpoint_rdo_thresh) to around 1.25. Videos may have mipmaps and alpha channels. Videos must always be played back by the transcoder in first to last image order.\n"
"Video files currently use I-Frames on the first image, and P-Frames using conditional replenishment on subsequent frames.\n"
"Compression level details:\n"
" Level 0: Fastest, but has marginal quality and is a work in progress. Brittle on complex images. Avg. Y dB: 35.45\n"
" Level 1: Hierarchical codebook searching. 36.87 dB, ~1.4x slower vs. level 0. (This is the default setting.)\n"
" Level 2: Full codebook searching. 37.13 dB, ~1.8x slower vs. level 0. (Equivalent the the initial release's default settings.)\n"
" Level 3: Hierarchical codebook searching, codebook k-means iterations. 37.15 dB, ~4x slower vs. level 0\n"
" Level 4: Full codebook searching, codebook k-means iterations. 37.41 dB, ~5.5x slower vs. level 0. (Equivalent to the initial release's -slower setting.)\n"
" Level 5: Full codebook searching, twice as many codebook k-means iterations, best ETC1 endpoint opt. 37.43 dB, ~12x slower vs. level 0\n"
);
}
static bool load_listing_file(const std::string &f, std::vector<std::string> &filenames)
{
std::string filename(f);
filename.erase(0, 1);
FILE *pFile = nullptr;
#ifdef _WIN32
fopen_s(&pFile, filename.c_str(), "r");
#else
pFile = fopen(filename.c_str(), "r");
#endif
if (!pFile)
{
error_printf("Failed opening listing file: \"%s\"\n", filename.c_str());
return false;
}
uint32_t total_filenames = 0;
for ( ; ; )
{
char buf[3072];
buf[0] = '\0';
char *p = fgets(buf, sizeof(buf), pFile);
if (!p)
{
if (ferror(pFile))
{
error_printf("Failed reading from listing file: \"%s\"\n", filename.c_str());
fclose(pFile);
return false;
}
else
break;
}
std::string read_filename(p);
while (read_filename.size())
{
if (read_filename[0] == ' ')
read_filename.erase(0, 1);
else
break;
}
while (read_filename.size())
{
const char c = read_filename.back();
if ((c == ' ') || (c == '\n') || (c == '\r'))
read_filename.erase(read_filename.size() - 1, 1);
else
break;
}
if (read_filename.size())
{
filenames.push_back(read_filename);
total_filenames++;
}
}
fclose(pFile);
printf("Successfully read %u filenames(s) from listing file \"%s\"\n", total_filenames, filename.c_str());
return true;
}
class command_line_params
{
public:
command_line_params() :
m_mode(cDefault),
m_multifile_first(0),
m_multifile_num(0),
m_individual(false),
m_no_ktx(false),
m_etc1_only(false),
m_fuzz_testing(false)
{
}
bool parse(int arg_c, const char **arg_v)
{
int arg_index = 1;
while (arg_index < arg_c)
{
const char *pArg = arg_v[arg_index];
const int num_remaining_args = arg_c - (arg_index + 1);
int arg_count = 1;
#define REMAINING_ARGS_CHECK(n) if (num_remaining_args < (n)) { error_printf("Error: Expected %u values to follow %s!\n", n, pArg); return false; }
if (strcasecmp(pArg, "-compress") == 0)
m_mode = cCompress;
else if (strcasecmp(pArg, "-compare") == 0)
m_mode = cCompare;
else if (strcasecmp(pArg, "-unpack") == 0)
m_mode = cUnpack;
else if (strcasecmp(pArg, "-validate") == 0)
m_mode = cValidate;
else if (strcasecmp(pArg, "-file") == 0)
{
REMAINING_ARGS_CHECK(1);
m_input_filenames.push_back(std::string(arg_v[arg_index + 1]));
arg_count++;
}
else if (strcasecmp(pArg, "-alpha_file") == 0)
{
REMAINING_ARGS_CHECK(1);
m_input_alpha_filenames.push_back(std::string(arg_v[arg_index + 1]));
arg_count++;
}
else if (strcasecmp(pArg, "-multifile_printf") == 0)
{
REMAINING_ARGS_CHECK(1);
m_multifile_printf = std::string(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-multifile_first") == 0)
{
REMAINING_ARGS_CHECK(1);
m_multifile_first = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-multifile_num") == 0)
{
REMAINING_ARGS_CHECK(1);
m_multifile_num = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-linear") == 0)
m_comp_params.m_perceptual = false;
else if (strcasecmp(pArg, "-srgb") == 0)
m_comp_params.m_perceptual = true;
else if (strcasecmp(pArg, "-q") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_quality_level = clamp<int>(atoi(arg_v[arg_index + 1]), BASISU_QUALITY_MIN, BASISU_QUALITY_MAX);
arg_count++;
}
else if (strcasecmp(pArg, "-output_file") == 0)
{
REMAINING_ARGS_CHECK(1);
m_output_filename = arg_v[arg_index + 1];
arg_count++;
}
else if (strcasecmp(pArg, "-output_path") == 0)
{
REMAINING_ARGS_CHECK(1);
m_output_path = arg_v[arg_index + 1];
arg_count++;
}
else if (strcasecmp(pArg, "-debug") == 0)
{
m_comp_params.m_debug = true;
enable_debug_printf(true);
}
else if (strcasecmp(pArg, "-debug_images") == 0)
m_comp_params.m_debug_images = true;
else if (strcasecmp(pArg, "-stats") == 0)
m_comp_params.m_compute_stats = true;
else if (strcasecmp(pArg, "-level") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_compression_level = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-slower") == 0)
{
// This option is gone, but we'll do something reasonable with it anyway. Level 4 is equivalent to the original release's -slower, but let's just go to level 2.
m_comp_params.m_compression_level = 2;
}
else if (strcasecmp(pArg, "-max_endpoints") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_max_endpoint_clusters = clamp<int>(atoi(arg_v[arg_index + 1]), 1, BASISU_MAX_ENDPOINT_CLUSTERS);
arg_count++;
}
else if (strcasecmp(pArg, "-max_selectors") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_max_selector_clusters = clamp<int>(atoi(arg_v[arg_index + 1]), 1, BASISU_MAX_SELECTOR_CLUSTERS);
arg_count++;
}
else if (strcasecmp(pArg, "-y_flip") == 0)
m_comp_params.m_y_flip = true;
else if (strcasecmp(pArg, "-normal_map") == 0)
{
m_comp_params.m_perceptual = false;
m_comp_params.m_mip_srgb = false;
m_comp_params.m_no_selector_rdo = true;
m_comp_params.m_no_endpoint_rdo = true;
}
else if (strcasecmp(pArg, "-no_alpha") == 0)
m_comp_params.m_check_for_alpha = false;
else if (strcasecmp(pArg, "-force_alpha") == 0)
m_comp_params.m_force_alpha = true;
else if (strcasecmp(pArg, "-seperate_rg_to_color_alpha") == 0)
m_comp_params.m_seperate_rg_to_color_alpha = true;
else if (strcasecmp(pArg, "-no_multithreading") == 0)
{
m_comp_params.m_multithreading = false;
}
else if (strcasecmp(pArg, "-mipmap") == 0)
m_comp_params.m_mip_gen = true;
else if (strcasecmp(pArg, "-no_ktx") == 0)
m_no_ktx = true;
else if (strcasecmp(pArg, "-etc1_only") == 0)
m_etc1_only = true;
else if (strcasecmp(pArg, "-disable_hierarchical_endpoint_codebooks") == 0)
m_comp_params.m_disable_hierarchical_endpoint_codebooks = true;
else if (strcasecmp(pArg, "-mip_scale") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_mip_scale = (float)atof(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-mip_filter") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_mip_filter = arg_v[arg_index + 1];
// TODO: Check filter
arg_count++;
}
else if (strcasecmp(pArg, "-mip_renorm") == 0)
m_comp_params.m_mip_renormalize = true;
else if (strcasecmp(pArg, "-mip_clamp") == 0)
m_comp_params.m_mip_wrapping = false;
else if (strcasecmp(pArg, "-mip_smallest") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_mip_smallest_dimension = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-mip_srgb") == 0)
m_comp_params.m_mip_srgb = true;
else if (strcasecmp(pArg, "-mip_linear") == 0)
m_comp_params.m_mip_srgb = false;
else if (strcasecmp(pArg, "-no_selector_rdo") == 0)
m_comp_params.m_no_selector_rdo = true;
else if (strcasecmp(pArg, "-selector_rdo_thresh") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_selector_rdo_thresh = (float)atof(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-no_endpoint_rdo") == 0)
m_comp_params.m_no_endpoint_rdo = true;
else if (strcasecmp(pArg, "-endpoint_rdo_thresh") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_endpoint_rdo_thresh = (float)atof(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-global_sel_pal") == 0)
m_comp_params.m_global_sel_pal = true;
else if (strcasecmp(pArg, "-no_auto_global_sel_pal") == 0)
m_comp_params.m_no_auto_global_sel_pal = true;
else if (strcasecmp(pArg, "-global_pal_bits") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_global_pal_bits = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-global_mod_bits") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_global_mod_bits = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-no_hybrid_sel_cb") == 0)
m_comp_params.m_no_hybrid_sel_cb = true;
else if (strcasecmp(pArg, "-hybrid_sel_cb_quality_thresh") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_hybrid_sel_cb_quality_thresh = (float)atof(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-userdata0") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_userdata0 = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-userdata1") == 0)
{
REMAINING_ARGS_CHECK(1);
m_comp_params.m_userdata1 = atoi(arg_v[arg_index + 1]);
arg_count++;
}
else if (strcasecmp(pArg, "-framerate") == 0)
{
REMAINING_ARGS_CHECK(1);
double fps = atof(arg_v[arg_index + 1]);
double us_per_frame = 0;
if (fps > 0)
us_per_frame = 1000000.0f / fps;
m_comp_params.m_us_per_frame = clamp<int>(static_cast<int>(us_per_frame + .5f), 0, basist::cBASISMaxUSPerFrame);
arg_count++;
}
else if (strcasecmp(pArg, "-tex_type") == 0)
{
REMAINING_ARGS_CHECK(1);
const char *pType = arg_v[arg_index + 1];
if (strcasecmp(pType, "2d") == 0)
m_comp_params.m_tex_type = basist::cBASISTexType2D;
else if (strcasecmp(pType, "2darray") == 0)
m_comp_params.m_tex_type = basist::cBASISTexType2DArray;
else if (strcasecmp(pType, "3d") == 0)
m_comp_params.m_tex_type = basist::cBASISTexTypeVolume;
else if (strcasecmp(pType, "cubemap") == 0)
m_comp_params.m_tex_type = basist::cBASISTexTypeCubemapArray;
else if (strcasecmp(pType, "video") == 0)
m_comp_params.m_tex_type = basist::cBASISTexTypeVideoFrames;
else
{
error_printf("Invalid texture type: %s\n", pType);
return false;
}
arg_count++;
}
else if (strcasecmp(pArg, "-individual") == 0)
m_individual = true;
else if (strcasecmp(pArg, "-fuzz_testing") == 0)
m_fuzz_testing = true;
else if (strcasecmp(pArg, "-csv_file") == 0)
{
REMAINING_ARGS_CHECK(1);
m_csv_file = arg_v[arg_index + 1];
m_comp_params.m_compute_stats = true;
arg_count++;
}
else if (pArg[0] == '-')
{
error_printf("Unrecognized command line option: %s\n", pArg);
return false;
}
else
{
// Let's assume it's a source filename, so globbing works
//error_printf("Unrecognized command line option: %s\n", pArg);
m_input_filenames.push_back(pArg);
}
arg_index += arg_count;
}
if (m_comp_params.m_quality_level != -1)
{
m_comp_params.m_max_endpoint_clusters = 0;
m_comp_params.m_max_selector_clusters = 0;
}
else if ((!m_comp_params.m_max_endpoint_clusters) || (!m_comp_params.m_max_selector_clusters))
{
m_comp_params.m_max_endpoint_clusters = 0;
m_comp_params.m_max_selector_clusters = 0;
m_comp_params.m_quality_level = 128;
}
if (!m_comp_params.m_mip_srgb.was_changed())
{
// They didn't specify what colorspace to do mipmap filtering in, so choose sRGB if they've specified that the texture is sRGB.
if (m_comp_params.m_perceptual)
m_comp_params.m_mip_srgb = true;
else
m_comp_params.m_mip_srgb = false;
}
return true;
}
bool process_listing_files()
{
std::vector<std::string> new_input_filenames;
for (uint32_t i = 0; i < m_input_filenames.size(); i++)
{
if (m_input_filenames[i][0] == '@')
{
if (!load_listing_file(m_input_filenames[i], new_input_filenames))
return false;
}
else
new_input_filenames.push_back(m_input_filenames[i]);
}
new_input_filenames.swap(m_input_filenames);
std::vector<std::string> new_input_alpha_filenames;
for (uint32_t i = 0; i < m_input_alpha_filenames.size(); i++)
{
if (m_input_alpha_filenames[i][0] == '@')
{
if (!load_listing_file(m_input_alpha_filenames[i], new_input_alpha_filenames))
return false;
}
else
new_input_alpha_filenames.push_back(m_input_alpha_filenames[i]);
}
new_input_alpha_filenames.swap(m_input_alpha_filenames);
return true;
}
basis_compressor_params m_comp_params;
tool_mode m_mode;
std::vector<std::string> m_input_filenames;
std::vector<std::string> m_input_alpha_filenames;
std::string m_output_filename;
std::string m_output_path;
std::string m_multifile_printf;
uint32_t m_multifile_first;
uint32_t m_multifile_num;
std::string m_csv_file;
bool m_individual;
bool m_no_ktx;
bool m_etc1_only;
bool m_fuzz_testing;
};
static bool expand_multifile(command_line_params &opts)
{
if (!opts.m_multifile_printf.size())
return true;
if (!opts.m_multifile_num)
{
error_printf("-multifile_printf specified, but not -multifile_num\n");
return false;
}
std::string fmt(opts.m_multifile_printf);
size_t x = fmt.find_first_of('!');
if (x != std::string::npos)
fmt[x] = '%';
if (string_find_right(fmt, '%') == -1)
{
error_printf("Must include C-style printf() format character '%%' in -multifile_printf string\n");
return false;
}
for (uint32_t i = opts.m_multifile_first; i < opts.m_multifile_first + opts.m_multifile_num; i++)
{
char buf[1024];
#ifdef _WIN32
sprintf_s(buf, sizeof(buf), fmt.c_str(), i);
#else
snprintf(buf, sizeof(buf), fmt.c_str(), i);
#endif
if (buf[0])
opts.m_input_filenames.push_back(buf);
}
return true;
}
static bool compress_mode(command_line_params &opts)
{
basist::etc1_global_selector_codebook sel_codebook(basist::g_global_selector_cb_size, basist::g_global_selector_cb);
uint32_t num_threads = 1;
if (opts.m_comp_params.m_multithreading)
{
num_threads = std::thread::hardware_concurrency();
if (num_threads < 1)
num_threads = 1;
}
job_pool jpool(num_threads);
opts.m_comp_params.m_pJob_pool = &jpool;
if (!expand_multifile(opts))
{
error_printf("-multifile expansion failed!\n");
return false;
}
if (!opts.m_input_filenames.size())
{
error_printf("No input files to process!\n");
return false;
}
basis_compressor_params &params = opts.m_comp_params;
params.m_read_source_images = true;
params.m_write_output_basis_files = true;
params.m_pSel_codebook = &sel_codebook;
FILE *pCSV_file = nullptr;
if (opts.m_csv_file.size())
{
pCSV_file = fopen_safe(opts.m_csv_file.c_str(), "a");
if (!pCSV_file)
{
error_printf("Failed opening CVS file \"%s\"\n", opts.m_csv_file.c_str());
return false;
}
}
printf("Processing %u total files\n", (uint32_t)opts.m_input_filenames.size());
for (size_t file_index = 0; file_index < (opts.m_individual ? opts.m_input_filenames.size() : 1U); file_index++)
{
if (opts.m_individual)
{
params.m_source_filenames.resize(1);
params.m_source_filenames[0] = opts.m_input_filenames[file_index];
if (file_index < opts.m_input_alpha_filenames.size())
{
params.m_source_alpha_filenames.resize(1);
params.m_source_alpha_filenames[0] = opts.m_input_alpha_filenames[file_index];
printf("Processing source file \"%s\", alpha file \"%s\"\n", params.m_source_filenames[0].c_str(), params.m_source_alpha_filenames[0].c_str());
}
else
{
params.m_source_alpha_filenames.resize(0);
printf("Processing source file \"%s\"\n", params.m_source_filenames[0].c_str());
}
}
else
{
params.m_source_filenames = opts.m_input_filenames;
params.m_source_alpha_filenames = opts.m_input_alpha_filenames;
}
if ((opts.m_output_filename.size()) && (!opts.m_individual))
params.m_out_filename = opts.m_output_filename;
else
{
std::string filename;
string_get_filename(opts.m_input_filenames[file_index].c_str(), filename);
string_remove_extension(filename);
filename += ".basis";
if (opts.m_output_path.size())
string_combine_path(filename, opts.m_output_path.c_str(), filename.c_str());
params.m_out_filename = filename;
}
basis_compressor c;
if (!c.init(opts.m_comp_params))
{
error_printf("basis_compressor::init() failed!\n");
if (pCSV_file)
{
fclose(pCSV_file);
pCSV_file = nullptr;
}
return false;
}
interval_timer tm;
tm.start();
basis_compressor::error_code ec = c.process();
tm.stop();
if (ec == basis_compressor::cECSuccess)
{
printf("Compression succeeded to file \"%s\" in %3.3f secs\n", params.m_out_filename.c_str(), tm.get_elapsed_secs());
}
else
{
bool exit_flag = true;
switch (ec)
{
case basis_compressor::cECFailedReadingSourceImages:
{
error_printf("Compressor failed reading a source image!\n");
if (opts.m_individual)
exit_flag = false;
break;
}
case basis_compressor::cECFailedValidating:
error_printf("Compressor failed 2darray/cubemap/video validation checks!\n");
break;
case basis_compressor::cECFailedFrontEnd:
error_printf("Compressor frontend stage failed!\n");
break;
case basis_compressor::cECFailedFontendExtract:
error_printf("Compressor frontend data extraction failed!\n");
break;
case basis_compressor::cECFailedBackend:
error_printf("Compressor backend stage failed!\n");
break;
case basis_compressor::cECFailedCreateBasisFile:
error_printf("Compressor failed creating Basis file data!\n");
break;
case basis_compressor::cECFailedWritingOutput:
error_printf("Compressor failed writing to output Basis file!\n");
break;
default:
error_printf("basis_compress::process() failed!\n");
break;
}
if (exit_flag)
{
if (pCSV_file)
{
fclose(pCSV_file);
pCSV_file = nullptr;
}
return false;
}
}
if ((pCSV_file) && (c.get_stats().size()))
{
for (size_t slice_index = 0; slice_index < c.get_stats().size(); slice_index++)
{
fprintf(pCSV_file, "\"%s\", %u, %u, %u, %u, %u, %f, %f, %f, %f, %u, %u, %f\n",
params.m_out_filename.c_str(),
(uint32_t)slice_index, (uint32_t)c.get_stats().size(),
c.get_stats()[slice_index].m_width, c.get_stats()[slice_index].m_height, (uint32_t)c.get_any_source_image_has_alpha(),
c.get_basis_bits_per_texel(),
c.get_stats()[slice_index].m_best_luma_709_psnr,
c.get_stats()[slice_index].m_basis_etc1s_luma_709_psnr,
c.get_stats()[slice_index].m_basis_bc1_luma_709_psnr,
params.m_quality_level, (int)params.m_compression_level, tm.get_elapsed_secs());
fflush(pCSV_file);
}
}
if (opts.m_individual)
printf("\n");
} // file_index
if (pCSV_file)
{
fclose(pCSV_file);
pCSV_file = nullptr;
}
return true;
}
static bool unpack_and_validate_mode(command_line_params &opts, bool validate_flag)
{
basist::etc1_global_selector_codebook sel_codebook(basist::g_global_selector_cb_size, basist::g_global_selector_cb);
if (!opts.m_input_filenames.size())
{
error_printf("No input files to process!\n");
return false;
}
uint32_t total_unpack_warnings = 0;
uint32_t total_pvrtc_nonpow2_warnings = 0;
for (uint32_t file_index = 0; file_index < opts.m_input_filenames.size(); file_index++)
{
const char *pInput_filename = opts.m_input_filenames[file_index].c_str();
std::string base_filename;
string_split_path(pInput_filename, nullptr, nullptr, &base_filename, nullptr);
uint8_vec basis_data;
if (!basisu::read_file_to_vec(pInput_filename, basis_data))
{
error_printf("Failed reading file \"%s\"\n", pInput_filename);
return false;
}
printf("Input file \"%s\"\n", pInput_filename);
if (!basis_data.size())
{
error_printf("File is empty!\n");
return false;
}
if (basis_data.size() > UINT32_MAX)
{
error_printf("File is too large!\n");
return false;
}
basist::basisu_transcoder dec(&sel_codebook);
if (!opts.m_fuzz_testing)
{
// Skip the full validation, which CRC16's the entire file.
// Validate the file - note this isn't necessary for transcoding
if (!dec.validate_file_checksums(&basis_data[0], (uint32_t)basis_data.size(), true))
{
error_printf("File version is unsupported, or file fail CRC checks!\n");
return false;
}
}
printf("File version and CRC checks succeeded\n");
basist::basisu_file_info fileinfo;
if (!dec.get_file_info(&basis_data[0], (uint32_t)basis_data.size(), fileinfo))
{
error_printf("Failed retrieving Basis file information!\n");
return false;
}
assert(fileinfo.m_total_images == fileinfo.m_image_mipmap_levels.size());
assert(fileinfo.m_total_images == dec.get_total_images(&basis_data[0], (uint32_t)basis_data.size()));
printf("File info:\n");
printf(" Version: %X\n", fileinfo.m_version);
printf(" Total header size: %u\n", fileinfo.m_total_header_size);
printf(" Total selectors: %u\n", fileinfo.m_total_selectors);
printf(" Selector codebook size: %u\n", fileinfo.m_selector_codebook_size);
printf(" Total endpoints: %u\n", fileinfo.m_total_endpoints);
printf(" Endpoint codebook size: %u\n", fileinfo.m_endpoint_codebook_size);
printf(" Tables size: %u\n", fileinfo.m_tables_size);
printf(" Slices size: %u\n", fileinfo.m_slices_size);
printf(" Texture type: %s\n", basist::basis_get_texture_type_name(fileinfo.m_tex_type));
printf(" us per frame: %u (%f fps)\n", fileinfo.m_us_per_frame, fileinfo.m_us_per_frame ? (1.0f / ((float)fileinfo.m_us_per_frame / 1000000.0f)) : 0.0f);
printf(" Total slices: %u\n", (uint32_t)fileinfo.m_slice_info.size());
printf(" Total images: %i\n", fileinfo.m_total_images);
printf(" Y Flipped: %u, Has alpha slices: %u\n", fileinfo.m_y_flipped, fileinfo.m_has_alpha_slices);
printf(" userdata0: 0x%X userdata1: 0x%X\n", fileinfo.m_userdata0, fileinfo.m_userdata1);
printf(" Per-image mipmap levels: ");
for (uint32_t i = 0; i < fileinfo.m_total_images; i++)
printf("%u ", fileinfo.m_image_mipmap_levels[i]);
printf("\n");
printf("\nImage info:\n");
for (uint32_t i = 0; i < fileinfo.m_total_images; i++)
{
basist::basisu_image_info ii;
if (!dec.get_image_info(&basis_data[0], (uint32_t)basis_data.size(), ii, i))
{
error_printf("get_image_info() failed!\n");
return false;
}
printf("Image %u: MipLevels: %u OrigDim: %ux%u, BlockDim: %ux%u, FirstSlice: %u, HasAlpha: %u\n", i, ii.m_total_levels, ii.m_orig_width, ii.m_orig_height,
ii.m_num_blocks_x, ii.m_num_blocks_y, ii.m_first_slice_index, (uint32_t)ii.m_alpha_flag);
}
printf("\nSlice info:\n");
for (uint32_t i = 0; i < fileinfo.m_slice_info.size(); i++)
{
const basist::basisu_slice_info &sliceinfo = fileinfo.m_slice_info[i];
printf("%u: OrigWidthHeight: %ux%u, BlockDim: %ux%u, TotalBlocks: %u, Compressed size: %u, Image: %u, Level: %u, UnpackedCRC16: 0x%X, alpha: %u, iframe: %i\n",
i,
sliceinfo.m_orig_width, sliceinfo.m_orig_height,
sliceinfo.m_num_blocks_x, sliceinfo.m_num_blocks_y,
sliceinfo.m_total_blocks,
sliceinfo.m_compressed_size,
sliceinfo.m_image_index, sliceinfo.m_level_index,
sliceinfo.m_unpacked_slice_crc16,
(uint32_t)sliceinfo.m_alpha_flag,
(uint32_t)sliceinfo.m_iframe_flag);
}
printf("\n");
if (!dec.start_transcoding(&basis_data[0], (uint32_t)basis_data.size()))
{
error_printf("start_transcoding() failed!\n");
return false;
}
std::vector< gpu_image_vec > gpu_images[basist::cTFTotalTextureFormats];
int first_format = 0;
int last_format = basist::cTFTotalTextureFormats;
if (opts.m_etc1_only)
{
first_format = basist::cTFETC1;
last_format = first_format + 1;
}
for (int format_iter = first_format; format_iter < last_format; format_iter++)
{
basist::transcoder_texture_format tex_fmt = static_cast<basist::transcoder_texture_format>(format_iter);
gpu_images[tex_fmt].resize(fileinfo.m_total_images);
for (uint32_t image_index = 0; image_index < fileinfo.m_total_images; image_index++)
gpu_images[tex_fmt][image_index].resize(fileinfo.m_image_mipmap_levels[image_index]);
}
// Now transcode the file to all supported texture formats and save mipmapped KTX files
for (int format_iter = first_format; format_iter < last_format; format_iter++)
{
for (uint32_t image_index = 0; image_index < fileinfo.m_total_images; image_index++)
{
for (uint32_t level_index = 0; level_index < fileinfo.m_image_mipmap_levels[image_index]; level_index++)
{
basist::basisu_image_level_info level_info;
if (!dec.get_image_level_info(&basis_data[0], (uint32_t)basis_data.size(), level_info, image_index, level_index))
{
error_printf("Failed retrieving image level information (%u %u)!\n", image_index, level_index);
return false;
}
const basist::transcoder_texture_format transcoder_tex_fmt = static_cast<basist::transcoder_texture_format>(format_iter);
if (transcoder_tex_fmt == basist::cTFPVRTC1_4_OPAQUE_ONLY)
{
if (!is_pow2(level_info.m_width) || !is_pow2(level_info.m_height))
{
total_pvrtc_nonpow2_warnings++;
printf("Warning: Will not transcode image %u level %u res %ux%u to PVRTC1 (one or more dimension is not a power of 2)\n", image_index, level_index, level_info.m_width, level_info.m_height);
// Can't transcode this image level to PVRTC because it's not a pow2 (we're going to support transcoding non-pow2 to the next larger pow2 soon)
continue;
}
}
basisu::texture_format tex_fmt = basis_get_basisu_texture_format(transcoder_tex_fmt);
gpu_image &gi = gpu_images[transcoder_tex_fmt][image_index][level_index];
gi.init(tex_fmt, level_info.m_orig_width, level_info.m_orig_height);
// Fill the buffer with psuedo-random bytes, to help more visibly detect cases where the transcoder fails to write to part of the output.
fill_buffer_with_random_bytes(gi.get_ptr(), gi.get_size_in_bytes());
#if 1
if (!dec.transcode_image_level(&basis_data[0], (uint32_t)basis_data.size(), image_index, level_index, gi.get_ptr(), gi.get_total_blocks(), transcoder_tex_fmt, 0))
{
error_printf("Failed transcoding image level (%u %u %u)!\n", image_index, level_index, format_iter);
return false;
}
#else
// quick and dirty row pitch parameter test, to be moved into a unit test
uint8_vec temp;
uint32_t block_pitch_to_test = level_info.m_num_blocks_x;
if (transcoder_tex_fmt != basist::cTFPVRTC1_4_OPAQUE_ONLY)
block_pitch_to_test += 5;
temp.resize(level_info.m_num_blocks_y * block_pitch_to_test * gi.get_bytes_per_block());
fill_buffer_with_random_bytes(&temp[0], temp.size());
if (!dec.transcode_image_level(&basis_data[0], (uint32_t)basis_data.size(), image_index, level_index, &temp[0], (uint32_t)(temp.size() / gi.get_bytes_per_block()), transcoder_tex_fmt, 0, block_pitch_to_test))
{
error_printf("Failed transcoding image level (%u %u %u)!\n", image_index, level_index, format_iter);
return false;
}
if (transcoder_tex_fmt == basist::cTFPVRTC1_4_OPAQUE_ONLY)
{
assert(temp.size() == gi.get_size_in_bytes());
memcpy(gi.get_ptr(), &temp[0], gi.get_size_in_bytes());
}
else
{
for (uint32_t y = 0; y < level_info.m_num_blocks_y; y++)
memcpy(gi.get_block_ptr(0, y), &temp[y * block_pitch_to_test * gi.get_bytes_per_block()], gi.get_row_pitch_in_bytes());
}
#endif
printf("Transcode of image %u level %u res %ux%u format %s succeeded\n", image_index, level_index, level_info.m_orig_width, level_info.m_orig_height, basist::basis_get_format_name(transcoder_tex_fmt));
} // format_iter
} // level_index
} // image_info
if (!validate_flag)
{
// Now write KTX files and unpack them to individual PNG's
for (int format_iter = first_format; format_iter < last_format; format_iter++)
{
const basist::transcoder_texture_format transcoder_tex_fmt = static_cast<basist::transcoder_texture_format>(format_iter);
if ((!opts.m_no_ktx) && (fileinfo.m_tex_type == basist::cBASISTexTypeCubemapArray))
{
// No KTX tool that we know of supports cubemap arrays, so write individual cubemap files.
for (uint32_t image_index = 0; image_index < fileinfo.m_total_images; image_index += 6)
{
std::vector<gpu_image_vec> cubemap;
for (uint32_t i = 0; i < 6; i++)
cubemap.push_back(gpu_images[format_iter][image_index + i]);
std::string ktx_filename(base_filename + string_format("_transcoded_cubemap_%s_%u.ktx", basist::basis_get_format_name(transcoder_tex_fmt), image_index / 6));
if (!write_compressed_texture_file(ktx_filename.c_str(), cubemap, true))
{
error_printf("Failed writing KTX file \"%s\"!\n", ktx_filename.c_str());
return false;
}
printf("Wrote KTX file \"%s\"\n", ktx_filename.c_str());
}
}
for (uint32_t image_index = 0; image_index < fileinfo.m_total_images; image_index++)
{
gpu_image_vec &gi = gpu_images[format_iter][image_index];
if (!gi.size())
continue;
uint32_t level;
for (level = 0; level < gi.size(); level++)
if (!gi[level].get_total_blocks())
break;
if (level < gi.size())
continue;
if ((!opts.m_no_ktx) && (fileinfo.m_tex_type != basist::cBASISTexTypeCubemapArray))
{
std::string ktx_filename(base_filename + string_format("_transcoded_%s_%04u.ktx", basist::basis_get_format_name(transcoder_tex_fmt), image_index));
if (!write_compressed_texture_file(ktx_filename.c_str(), gi))
{
error_printf("Failed writing KTX file \"%s\"!\n", ktx_filename.c_str());
return false;
}
printf("Wrote KTX file \"%s\"\n", ktx_filename.c_str());
}
for (uint32_t level_index = 0; level_index < gi.size(); level_index++)
{
basist::basisu_image_level_info level_info;
if (!dec.get_image_level_info(&basis_data[0], (uint32_t)basis_data.size(), level_info, image_index, level_index))
{
error_printf("Failed retrieving image level information (%u %u)!\n", image_index, level_index);
return false;
}
image u;
if (!gi[level_index].unpack(u))
{
printf("Warning: Failed unpacking GPU texture data (%u %u %u). Unpacking as much as possible.\n", format_iter, image_index, level_index);
total_unpack_warnings++;
}
//u.crop(level_info.m_orig_width, level_info.m_orig_height);
std::string rgb_filename;
if (gi.size() > 1)
rgb_filename = base_filename + string_format("_unpacked_rgb_%s_%u_%04u.png", basist::basis_get_format_name(transcoder_tex_fmt), level_index, image_index);
else
rgb_filename = base_filename + string_format("_unpacked_rgb_%s_%04u.png", basist::basis_get_format_name(transcoder_tex_fmt), image_index);
if (!save_png(rgb_filename, u, cImageSaveIgnoreAlpha))
{
error_printf("Failed writing to PNG file \"%s\"\n", rgb_filename.c_str());
return false;
}
printf("Wrote PNG file \"%s\"\n", rgb_filename.c_str());
if (basis_transcoder_format_has_alpha(transcoder_tex_fmt))
{
std::string a_filename;
if (gi.size() > 1)
a_filename = base_filename + string_format("_unpacked_a_%s_%u_%04u.png", basist::basis_get_format_name(transcoder_tex_fmt), level_index, image_index);
else
a_filename = base_filename + string_format("_unpacked_a_%s_%04u.png", basist::basis_get_format_name(transcoder_tex_fmt), image_index);
if (!save_png(a_filename, u, cImageSaveGrayscale, 3))
{
error_printf("Failed writing to PNG file \"%s\"\n", a_filename.c_str());
return false;
}
printf("Wrote PNG file \"%s\"\n", a_filename.c_str());
}
} // level_index
} // image_index
} // format_iter
} // if (!validate_flag)
} // image_index
if (total_pvrtc_nonpow2_warnings)
printf("Warning: %u images could not be transcoded to PVRTC1 because one or both dimensions were not a power of 2\n", total_pvrtc_nonpow2_warnings);
if (total_unpack_warnings)
printf("ATTENTION: %u total images had invalid GPU texture data!\n", total_unpack_warnings);
else
printf("Success\n");
return true;
}
static bool compare_mode(command_line_params &opts)
{
if (opts.m_input_filenames.size() != 2)
{
error_printf("Must specify two PNG filenames using -file\n");
return false;
}
image a, b;
if (!load_png(opts.m_input_filenames[0].c_str(), a))
{
error_printf("Failed loading image from file \"%s\"!\n", opts.m_input_filenames[0].c_str());
return false;
}
printf("Loaded \"%s\", %ux%u, has alpha: %u\n", opts.m_input_filenames[0].c_str(), a.get_width(), a.get_height(), a.has_alpha());
if (!load_png(opts.m_input_filenames[1].c_str(), b))
{
error_printf("Failed loading image from file \"%s\"!\n", opts.m_input_filenames[1].c_str());
return false;
}
printf("Loaded \"%s\", %ux%u, has alpha: %u\n", opts.m_input_filenames[1].c_str(), b.get_width(), b.get_height(), b.has_alpha());
if ((a.get_width() != b.get_width()) || (a.get_height() != b.get_height()))
{
printf("Images don't have the same dimensions - cropping input images to smallest common dimensions\n");
uint32_t w = minimum(a.get_width(), b.get_width());
uint32_t h = minimum(a.get_height(), b.get_height());
a.crop(w, h);
b.crop(w, h);
}
printf("Comparison image res: %ux%u\n", a.get_width(), a.get_height());
image_metrics im;
im.calc(a, b, 0, 3);
im.print("RGB ");
im.calc(a, b, 0, 1);
im.print("R ");
im.calc(a, b, 1, 1);
im.print("G ");
im.calc(a, b, 2, 1);
im.print("B ");
im.calc(a, b, 0, 0);
im.print("Y 709 " );
im.calc(a, b, 0, 0, true, true);
im.print("Y 601 " );
vec4F s_rgb(compute_ssim(a, b, false, false));
printf("R SSIM: %f\n", s_rgb[0]);
printf("G SSIM: %f\n", s_rgb[1]);
printf("B SSIM: %f\n", s_rgb[2]);
printf("RGB Avg SSIM: %f\n", (s_rgb[0] + s_rgb[1] + s_rgb[2]) / 3.0f);
printf("A SSIM: %f\n", s_rgb[3]);
vec4F s_y_709(compute_ssim(a, b, true, false));
printf("Y 709 SSIM: %f\n", s_y_709[0]);
vec4F s_y_601(compute_ssim(a, b, true, true));
printf("Y 601 SSIM: %f\n", s_y_601[0]);
image delta_img(a.get_width(), a.get_height());
const int X = 2;
for (uint32_t y = 0; y < a.get_height(); y++)
{
for (uint32_t x = 0; x < a.get_width(); x++)
{
color_rgba &d = delta_img(x, y);
for (int c = 0; c < 4; c++)
d[c] = (uint8_t)clamp<int>((a(x, y)[c] - b(x, y)[c]) * X + 128, 0, 255);
} // x
} // y
save_png("a_rgb.png", a, cImageSaveIgnoreAlpha);
save_png("a_alpha.png", a, cImageSaveGrayscale, 3);
printf("Wrote a_rgb.png and a_alpha.png\n");
save_png("b_rgb.png", b, cImageSaveIgnoreAlpha);
save_png("b_alpha.png", b, cImageSaveGrayscale, 3);
printf("Wrote b_rgb.png and b_alpha.png\n");
save_png("delta_img_rgb.png", delta_img, cImageSaveIgnoreAlpha);
printf("Wrote delta_img_rgb.png\n");
save_png("delta_img_a.png", delta_img, cImageSaveGrayscale, 3);
printf("Wrote delta_img_a.png\n");
return true;
}
static int main_internal(int argc, const char **argv)
{
basisu_encoder_init();
printf("Basis Universal GPU Texture Compressor Reference Encoder v" BASISU_TOOL_VERSION ", Copyright (C) 2017-2019 Binomial LLC, All rights reserved\n");
#if defined(DEBUG) || defined(_DEBUG)
printf("DEBUG build\n");
#endif
if (argc == 1)
{
print_usage();
return EXIT_FAILURE;
}
command_line_params opts;
if (!opts.parse(argc, argv))
{
print_usage();
return EXIT_FAILURE;
}
if (!opts.process_listing_files())
return EXIT_FAILURE;
if (opts.m_mode == cDefault)
{
for (size_t i = 0; i < opts.m_input_filenames.size(); i++)
{
std::string ext(string_get_extension(opts.m_input_filenames[i]));
if (strcasecmp(ext.c_str(), "basis") == 0)
{
// If they haven't specified any modes, and they give us a .basis file, then assume they want to unpack it.
opts.m_mode = cUnpack;
break;
}
}
}
bool status = false;
switch (opts.m_mode)
{
case cDefault:
case cCompress:
status = compress_mode(opts);
break;
case cValidate:
status = unpack_and_validate_mode(opts, true);
break;
case cUnpack:
status = unpack_and_validate_mode(opts, false);
break;
case cCompare:
status = compare_mode(opts);
break;
default:
assert(0);
break;
}
return status ? EXIT_SUCCESS : EXIT_FAILURE;
}
int main(int argc, const char **argv)
{
int status = EXIT_FAILURE;
#if BASISU_CATCH_EXCEPTIONS
try
{
status = main_internal(argc, argv);
}
catch (const std::exception &exc)
{
fprintf(stderr, "Fatal error: Caught exception \"%s\"\n", exc.what());
}
catch (...)
{
fprintf(stderr, "Fatal error: Uncaught exception!\n");
}
#else
status = main_internal(argc, argv);
#endif
return status;
}
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