Alexander Suvorov
c9fd4dca75
This change improves compression speed. Explanation: While trying different remappings for the endpoint indices, there is no need to perform full pack simulation when using Huffman coding. Once the delta index histogram is generated, it is sufficient to simply multiply the code sizes by the corresponding frequences in order to get the total size of the compressed endpoint indices stream. There is also no need to compute the rest of the compressed stream, as its size does not depend on the endpoint remapping and therefore is always constant, so it will not affect the size comparison during endpoint optimization. Testing: The modified algorithm has been tested on the Kodak test set using 64-bit build with default settings (running on Windows 10, i7-4790, 3.6GHz). All the decompressed test images are identical to the images being compressed and decompressed using original version of Crunch. [Compressing Kodak set without mipmaps] Original: 1582222 bytes / 28.864 sec Modified: 1494501 bytes / 25.317 sec Improvement: 5.54% (compression ratio) / 12.29% (compression time) [Compressing Kodak set with mipmaps] Original: 2065243 bytes / 36.927 sec Modified: 1945365 bytes / 33.151 sec Improvement: 5.80% (compression ratio) / 10.23% (compression time)
1585 lines
54 KiB
C++
1585 lines
54 KiB
C++
// File: crn_comp.cpp
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// See Copyright Notice and license at the end of inc/crnlib.h
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#include "crn_core.h"
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#include "crn_console.h"
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#include "crn_comp.h"
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#include "crn_zeng.h"
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#include "crn_checksum.h"
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#define CRNLIB_CREATE_DEBUG_IMAGES 0
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#define CRNLIB_ENABLE_DEBUG_MESSAGES 0
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namespace crnlib {
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static const uint cEncodingMapNumChunksPerCode = 3;
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crn_comp::crn_comp()
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: m_pParams(NULL) {
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}
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crn_comp::~crn_comp() {
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}
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float crn_comp::color_endpoint_similarity_func(uint index_a, uint index_b, void* pContext) {
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dxt_hc& hvq = *static_cast<dxt_hc*>(pContext);
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uint endpoint_a = hvq.get_color_endpoint(index_a);
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uint endpoint_b = hvq.get_color_endpoint(index_b);
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color_quad_u8 a[2];
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a[0] = dxt1_block::unpack_color((uint16)(endpoint_a & 0xFFFF), true);
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a[1] = dxt1_block::unpack_color((uint16)((endpoint_a >> 16) & 0xFFFF), true);
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color_quad_u8 b[2];
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b[0] = dxt1_block::unpack_color((uint16)(endpoint_b & 0xFFFF), true);
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b[1] = dxt1_block::unpack_color((uint16)((endpoint_b >> 16) & 0xFFFF), true);
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uint total_error = color::elucidian_distance(a[0], b[0], false) + color::elucidian_distance(a[1], b[1], false);
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float weight = 1.0f - math::clamp(total_error * 1.0f / 8000.0f, 0.0f, 1.0f);
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return weight;
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}
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float crn_comp::alpha_endpoint_similarity_func(uint index_a, uint index_b, void* pContext) {
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dxt_hc& hvq = *static_cast<dxt_hc*>(pContext);
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uint endpoint_a = hvq.get_alpha_endpoint(index_a);
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int endpoint_a_lo = dxt5_block::unpack_endpoint(endpoint_a, 0);
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int endpoint_a_hi = dxt5_block::unpack_endpoint(endpoint_a, 1);
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uint endpoint_b = hvq.get_alpha_endpoint(index_b);
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int endpoint_b_lo = dxt5_block::unpack_endpoint(endpoint_b, 0);
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int endpoint_b_hi = dxt5_block::unpack_endpoint(endpoint_b, 1);
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int total_error = math::square(endpoint_a_lo - endpoint_b_lo) + math::square(endpoint_a_hi - endpoint_b_hi);
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float weight = 1.0f - math::clamp(total_error * 1.0f / 256.0f, 0.0f, 1.0f);
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return weight;
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}
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void crn_comp::sort_color_endpoint_codebook(crnlib::vector<uint>& remapping, const crnlib::vector<uint>& endpoints) {
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remapping.resize(endpoints.size());
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uint lowest_energy = UINT_MAX;
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uint lowest_energy_index = 0;
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for (uint i = 0; i < endpoints.size(); i++) {
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color_quad_u8 a(dxt1_block::unpack_color(static_cast<uint16>(endpoints[i] & 0xFFFF), true));
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color_quad_u8 b(dxt1_block::unpack_color(static_cast<uint16>((endpoints[i] >> 16) & 0xFFFF), true));
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uint total = a.r + a.g + a.b + b.r + b.g + b.b;
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if (total < lowest_energy) {
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lowest_energy = total;
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lowest_energy_index = i;
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}
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}
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uint cur_index = lowest_energy_index;
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crnlib::vector<bool> chosen_flags(endpoints.size());
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uint n = 0;
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for (;;) {
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chosen_flags[cur_index] = true;
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remapping[cur_index] = n;
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n++;
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if (n == endpoints.size())
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break;
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uint lowest_error = UINT_MAX;
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uint lowest_error_index = 0;
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color_quad_u8 a(dxt1_block::unpack_endpoint(endpoints[cur_index], 0, true));
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color_quad_u8 b(dxt1_block::unpack_endpoint(endpoints[cur_index], 1, true));
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for (uint i = 0; i < endpoints.size(); i++) {
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if (chosen_flags[i])
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continue;
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color_quad_u8 c(dxt1_block::unpack_endpoint(endpoints[i], 0, true));
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color_quad_u8 d(dxt1_block::unpack_endpoint(endpoints[i], 1, true));
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uint total = color::elucidian_distance(a, c, false) + color::elucidian_distance(b, d, false);
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if (total < lowest_error) {
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lowest_error = total;
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lowest_error_index = i;
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}
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}
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cur_index = lowest_error_index;
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}
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}
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void crn_comp::sort_alpha_endpoint_codebook(crnlib::vector<uint>& remapping, const crnlib::vector<uint>& endpoints) {
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remapping.resize(endpoints.size());
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uint lowest_energy = UINT_MAX;
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uint lowest_energy_index = 0;
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for (uint i = 0; i < endpoints.size(); i++) {
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uint a = dxt5_block::unpack_endpoint(endpoints[i], 0);
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uint b = dxt5_block::unpack_endpoint(endpoints[i], 1);
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uint total = a + b;
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if (total < lowest_energy) {
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lowest_energy = total;
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lowest_energy_index = i;
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}
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}
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uint cur_index = lowest_energy_index;
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crnlib::vector<bool> chosen_flags(endpoints.size());
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uint n = 0;
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for (;;) {
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chosen_flags[cur_index] = true;
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remapping[cur_index] = n;
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n++;
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if (n == endpoints.size())
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break;
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uint lowest_error = UINT_MAX;
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uint lowest_error_index = 0;
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const int a = dxt5_block::unpack_endpoint(endpoints[cur_index], 0);
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const int b = dxt5_block::unpack_endpoint(endpoints[cur_index], 1);
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for (uint i = 0; i < endpoints.size(); i++) {
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if (chosen_flags[i])
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continue;
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const int c = dxt5_block::unpack_endpoint(endpoints[i], 0);
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const int d = dxt5_block::unpack_endpoint(endpoints[i], 1);
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uint total = math::square(a - c) + math::square(b - d);
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if (total < lowest_error) {
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lowest_error = total;
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lowest_error_index = i;
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}
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}
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cur_index = lowest_error_index;
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}
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}
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// The indices are only used for statistical purposes.
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bool crn_comp::pack_color_endpoints(
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crnlib::vector<uint8>& data,
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const crnlib::vector<uint>& remapping,
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uint trial_index) {
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trial_index;
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("pack_color_endpoints: %u", trial_index);
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#endif
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crnlib::vector<uint> remapped_endpoints(m_hvq.get_color_endpoint_codebook_size());
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for (uint i = 0; i < m_hvq.get_color_endpoint_codebook_size(); i++)
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remapped_endpoints[remapping[i]] = m_hvq.get_color_endpoint(i);
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const uint component_limits[6] = {31, 63, 31, 31, 63, 31};
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symbol_histogram hist[2];
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hist[0].resize(32);
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hist[1].resize(64);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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image_u8 endpoint_image(2, m_hvq.get_color_endpoint_codebook_size());
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image_u8 endpoint_residual_image(2, m_hvq.get_color_endpoint_codebook_size());
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#endif
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crnlib::vector<uint> residual_syms;
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residual_syms.reserve(m_hvq.get_color_endpoint_codebook_size() * 2 * 3);
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color_quad_u8 prev[2];
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prev[0].clear();
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prev[1].clear();
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int total_residuals = 0;
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for (uint endpoint_index = 0; endpoint_index < m_hvq.get_color_endpoint_codebook_size(); endpoint_index++) {
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const uint endpoint = remapped_endpoints[endpoint_index];
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color_quad_u8 cur[2];
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cur[0] = dxt1_block::unpack_color((uint16)(endpoint & 0xFFFF), false);
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cur[1] = dxt1_block::unpack_color((uint16)((endpoint >> 16) & 0xFFFF), false);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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endpoint_image(0, endpoint_index) = dxt1_block::unpack_color((uint16)(endpoint & 0xFFFF), true);
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endpoint_image(1, endpoint_index) = dxt1_block::unpack_color((uint16)((endpoint >> 16) & 0xFFFF), true);
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#endif
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for (uint j = 0; j < 2; j++) {
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for (uint k = 0; k < 3; k++) {
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int delta = cur[j][k] - prev[j][k];
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total_residuals += delta * delta;
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int sym = delta & component_limits[j * 3 + k];
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int table = (k == 1) ? 1 : 0;
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hist[table].inc_freq(sym);
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residual_syms.push_back(sym);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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endpoint_residual_image(j, endpoint_index)[k] = static_cast<uint8>(sym);
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#endif
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}
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}
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prev[0] = cur[0];
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prev[1] = cur[1];
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}
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Total endpoint residuals: %i", total_residuals);
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#endif
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#if CRNLIB_CREATE_DEBUG_IMAGES
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image_utils::write_to_file(dynamic_string(cVarArg, "color_endpoint_residuals_%u.tga", trial_index).get_ptr(), endpoint_residual_image);
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image_utils::write_to_file(dynamic_string(cVarArg, "color_endpoints_%u.tga", trial_index).get_ptr(), endpoint_image);
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#endif
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static_huffman_data_model residual_dm[2];
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symbol_codec codec;
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codec.start_encoding(1024 * 1024);
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// Transmit residuals
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for (uint i = 0; i < 2; i++) {
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if (!residual_dm[i].init(true, hist[i], 15))
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return false;
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if (!codec.encode_transmit_static_huffman_data_model(residual_dm[i], false))
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return false;
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}
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Wrote %u bits for color endpoint residual Huffman tables", codec.encode_get_total_bits_written());
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#endif
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uint start_bits = codec.encode_get_total_bits_written();
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start_bits;
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for (uint i = 0; i < residual_syms.size(); i++) {
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const uint sym = residual_syms[i];
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const uint table = ((i % 3) == 1) ? 1 : 0;
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codec.encode(sym, residual_dm[table]);
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}
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Wrote %u bits for color endpoint residuals", codec.encode_get_total_bits_written() - start_bits);
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#endif
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codec.stop_encoding(false);
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data.swap(codec.get_encoding_buf());
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging) {
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console::debug("Wrote a total of %u bits for color endpoint codebook", codec.encode_get_total_bits_written());
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console::debug("Wrote %f bits per each color endpoint", data.size() * 8.0f / m_hvq.get_color_endpoint_codebook_size());
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}
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#endif
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return true;
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}
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// The indices are only used for statistical purposes.
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bool crn_comp::pack_alpha_endpoints(
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crnlib::vector<uint8>& data,
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const crnlib::vector<uint>& remapping,
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uint trial_index) {
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trial_index;
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("pack_alpha_endpoints: %u", trial_index);
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#endif
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crnlib::vector<uint> remapped_endpoints(m_hvq.get_alpha_endpoint_codebook_size());
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for (uint i = 0; i < m_hvq.get_alpha_endpoint_codebook_size(); i++)
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remapped_endpoints[remapping[i]] = m_hvq.get_alpha_endpoint(i);
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symbol_histogram hist;
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hist.resize(256);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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image_u8 endpoint_image(2, m_hvq.get_alpha_endpoint_codebook_size());
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image_u8 endpoint_residual_image(2, m_hvq.get_alpha_endpoint_codebook_size());
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#endif
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crnlib::vector<uint> residual_syms;
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residual_syms.reserve(m_hvq.get_alpha_endpoint_codebook_size() * 2 * 3);
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uint prev[2];
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utils::zero_object(prev);
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int total_residuals = 0;
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for (uint endpoint_index = 0; endpoint_index < m_hvq.get_alpha_endpoint_codebook_size(); endpoint_index++) {
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const uint endpoint = remapped_endpoints[endpoint_index];
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uint cur[2];
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cur[0] = dxt5_block::unpack_endpoint(endpoint, 0);
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cur[1] = dxt5_block::unpack_endpoint(endpoint, 1);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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endpoint_image(0, endpoint_index) = cur[0];
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endpoint_image(1, endpoint_index) = cur[1];
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#endif
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for (uint j = 0; j < 2; j++) {
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int delta = cur[j] - prev[j];
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total_residuals += delta * delta;
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int sym = delta & 255;
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hist.inc_freq(sym);
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residual_syms.push_back(sym);
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#if CRNLIB_CREATE_DEBUG_IMAGES
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endpoint_residual_image(j, endpoint_index) = static_cast<uint8>(sym);
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#endif
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}
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prev[0] = cur[0];
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prev[1] = cur[1];
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}
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Total endpoint residuals: %i", total_residuals);
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#endif
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#if CRNLIB_CREATE_DEBUG_IMAGES
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image_utils::write_to_file(dynamic_string(cVarArg, "alpha_endpoint_residuals_%u.tga", trial_index).get_ptr(), endpoint_residual_image);
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image_utils::write_to_file(dynamic_string(cVarArg, "alpha_endpoints_%u.tga", trial_index).get_ptr(), endpoint_image);
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#endif
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static_huffman_data_model residual_dm;
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symbol_codec codec;
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codec.start_encoding(1024 * 1024);
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// Transmit residuals
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if (!residual_dm.init(true, hist, 15))
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return false;
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if (!codec.encode_transmit_static_huffman_data_model(residual_dm, false))
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return false;
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Wrote %u bits for alpha endpoint residual Huffman tables", codec.encode_get_total_bits_written());
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#endif
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uint start_bits = codec.encode_get_total_bits_written();
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start_bits;
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for (uint i = 0; i < residual_syms.size(); i++) {
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const uint sym = residual_syms[i];
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codec.encode(sym, residual_dm);
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}
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging)
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console::debug("Wrote %u bits for alpha endpoint residuals", codec.encode_get_total_bits_written() - start_bits);
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#endif
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codec.stop_encoding(false);
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data.swap(codec.get_encoding_buf());
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#if CRNLIB_ENABLE_DEBUG_MESSAGES
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if (m_pParams->m_flags & cCRNCompFlagDebugging) {
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console::debug("Wrote a total of %u bits for alpha endpoint codebook", codec.encode_get_total_bits_written());
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console::debug("Wrote %f bits per each alpha endpoint", data.size() * 8.0f / m_hvq.get_alpha_endpoint_codebook_size());
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}
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#endif
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return true;
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}
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float crn_comp::color_selector_similarity_func(uint index_a, uint index_b, void* pContext) {
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const crnlib::vector<dxt_hc::selectors>& selectors = *static_cast<const crnlib::vector<dxt_hc::selectors>*>(pContext);
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const dxt_hc::selectors& selectors_a = selectors[index_a];
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const dxt_hc::selectors& selectors_b = selectors[index_b];
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int total = 0;
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for (uint i = 0; i < 16; i++) {
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int a = g_dxt1_to_linear[selectors_a.get_by_index(i)];
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int b = g_dxt1_to_linear[selectors_b.get_by_index(i)];
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int delta = a - b;
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total += delta * delta;
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}
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float weight = 1.0f - math::clamp(total * 1.0f / 20.0f, 0.0f, 1.0f);
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return weight;
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}
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float crn_comp::alpha_selector_similarity_func(uint index_a, uint index_b, void* pContext) {
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const crnlib::vector<dxt_hc::selectors>& selectors = *static_cast<const crnlib::vector<dxt_hc::selectors>*>(pContext);
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const dxt_hc::selectors& selectors_a = selectors[index_a];
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const dxt_hc::selectors& selectors_b = selectors[index_b];
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int total = 0;
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for (uint i = 0; i < 16; i++) {
|
|
int a = g_dxt5_to_linear[selectors_a.get_by_index(i)];
|
|
int b = g_dxt5_to_linear[selectors_b.get_by_index(i)];
|
|
|
|
int delta = a - b;
|
|
total += delta * delta;
|
|
}
|
|
|
|
float weight = 1.0f - math::clamp(total * 1.0f / 100.0f, 0.0f, 1.0f);
|
|
return weight;
|
|
}
|
|
|
|
void crn_comp::sort_selector_codebook(crnlib::vector<uint>& remapping, const crnlib::vector<dxt_hc::selectors>& selectors, const uint8* pTo_linear) {
|
|
remapping.resize(selectors.size());
|
|
|
|
uint lowest_energy = UINT_MAX;
|
|
uint lowest_energy_index = 0;
|
|
|
|
for (uint i = 0; i < selectors.size(); i++) {
|
|
uint total = 0;
|
|
for (uint j = 0; j < 16; j++) {
|
|
int a = pTo_linear[selectors[i].get_by_index(j)];
|
|
|
|
total += a * a;
|
|
}
|
|
|
|
if (total < lowest_energy) {
|
|
lowest_energy = total;
|
|
lowest_energy_index = i;
|
|
}
|
|
}
|
|
|
|
uint cur_index = lowest_energy_index;
|
|
|
|
crnlib::vector<bool> chosen_flags(selectors.size());
|
|
|
|
uint n = 0;
|
|
for (;;) {
|
|
chosen_flags[cur_index] = true;
|
|
|
|
remapping[cur_index] = n;
|
|
n++;
|
|
if (n == selectors.size())
|
|
break;
|
|
|
|
uint lowest_error = UINT_MAX;
|
|
uint lowest_error_index = 0;
|
|
|
|
for (uint i = 0; i < selectors.size(); i++) {
|
|
if (chosen_flags[i])
|
|
continue;
|
|
|
|
uint total = 0;
|
|
for (uint j = 0; j < 16; j++) {
|
|
int a = pTo_linear[selectors[cur_index].get_by_index(j)];
|
|
int b = pTo_linear[selectors[i].get_by_index(j)];
|
|
|
|
int delta = a - b;
|
|
total += delta * delta;
|
|
}
|
|
|
|
if (total < lowest_error) {
|
|
lowest_error = total;
|
|
lowest_error_index = i;
|
|
}
|
|
}
|
|
|
|
cur_index = lowest_error_index;
|
|
}
|
|
}
|
|
|
|
// The indices are only used for statistical purposes.
|
|
bool crn_comp::pack_selectors(
|
|
crnlib::vector<uint8>& packed_data,
|
|
const crnlib::vector<dxt_hc::selectors>& selectors,
|
|
const crnlib::vector<uint>& remapping,
|
|
uint max_selector_value,
|
|
const uint8* pTo_linear,
|
|
uint trial_index) {
|
|
trial_index;
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("pack_selectors: %u", trial_index);
|
|
#endif
|
|
|
|
crnlib::vector<dxt_hc::selectors> remapped_selectors(selectors.size());
|
|
|
|
for (uint i = 0; i < selectors.size(); i++)
|
|
remapped_selectors[remapping[i]] = selectors[i];
|
|
|
|
#if CRNLIB_CREATE_DEBUG_IMAGES
|
|
image_u8 residual_image(16, selectors.size());
|
|
;
|
|
image_u8 selector_image(16, selectors.size());
|
|
;
|
|
#endif
|
|
|
|
crnlib::vector<uint> residual_syms;
|
|
residual_syms.reserve(selectors.size() * 8);
|
|
|
|
const uint num_baised_selector_values = (max_selector_value * 2 + 1);
|
|
symbol_histogram hist(num_baised_selector_values * num_baised_selector_values);
|
|
|
|
dxt_hc::selectors prev_selectors;
|
|
utils::zero_object(prev_selectors);
|
|
int total_residuals = 0;
|
|
for (uint selector_index = 0; selector_index < selectors.size(); selector_index++) {
|
|
const dxt_hc::selectors& s = remapped_selectors[selector_index];
|
|
|
|
uint prev_sym = 0;
|
|
for (uint i = 0; i < 16; i++) {
|
|
int p = pTo_linear[crnlib_assert_range_incl<uint>(prev_selectors.get_by_index(i), max_selector_value)];
|
|
|
|
int r = pTo_linear[crnlib_assert_range_incl<uint>(s.get_by_index(i), max_selector_value)] - p;
|
|
|
|
total_residuals += r * r;
|
|
|
|
uint sym = r + max_selector_value;
|
|
|
|
CRNLIB_ASSERT(sym < num_baised_selector_values);
|
|
if (i & 1) {
|
|
uint paired_sym = (sym * num_baised_selector_values) + prev_sym;
|
|
residual_syms.push_back(paired_sym);
|
|
hist.inc_freq(paired_sym);
|
|
} else
|
|
prev_sym = sym;
|
|
|
|
#if CRNLIB_CREATE_DEBUG_IMAGES
|
|
selector_image(i, selector_index) = (pTo_linear[crnlib_assert_range_incl<uint>(s.get_by_index(i), max_selector_value)] * 255) / max_selector_value;
|
|
residual_image(i, selector_index) = sym;
|
|
#endif
|
|
}
|
|
|
|
prev_selectors = s;
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("Total selector endpoint residuals: %u", total_residuals);
|
|
#endif
|
|
|
|
#if CRNLIB_CREATE_DEBUG_IMAGES
|
|
image_utils::write_to_file(dynamic_string(cVarArg, "selectors_%u_%u.tga", trial_index, max_selector_value).get_ptr(), selector_image);
|
|
image_utils::write_to_file(dynamic_string(cVarArg, "selector_residuals_%u_%u.tga", trial_index, max_selector_value).get_ptr(), residual_image);
|
|
#endif
|
|
|
|
static_huffman_data_model residual_dm;
|
|
|
|
symbol_codec codec;
|
|
codec.start_encoding(1024 * 1024);
|
|
|
|
// Transmit residuals
|
|
if (!residual_dm.init(true, hist, 15))
|
|
return false;
|
|
|
|
if (!codec.encode_transmit_static_huffman_data_model(residual_dm, false))
|
|
return false;
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("Wrote %u bits for selector residual Huffman tables", codec.encode_get_total_bits_written());
|
|
#endif
|
|
|
|
uint start_bits = codec.encode_get_total_bits_written();
|
|
start_bits;
|
|
|
|
for (uint i = 0; i < residual_syms.size(); i++) {
|
|
const uint sym = residual_syms[i];
|
|
codec.encode(sym, residual_dm);
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("Wrote %u bits for selector residuals", codec.encode_get_total_bits_written() - start_bits);
|
|
#endif
|
|
|
|
codec.stop_encoding(false);
|
|
|
|
packed_data.swap(codec.get_encoding_buf());
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging) {
|
|
console::debug("Wrote a total of %u bits for selector codebook", codec.encode_get_total_bits_written());
|
|
|
|
console::debug("Wrote %f bits per each selector codebook entry", packed_data.size() * 8.0f / selectors.size());
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::pack_chunks(
|
|
uint group,
|
|
bool clear_histograms,
|
|
symbol_codec* pCodec,
|
|
const crnlib::vector<uint>* pColor_endpoint_remap,
|
|
const crnlib::vector<uint>* pColor_selector_remap,
|
|
const crnlib::vector<uint>* pAlpha_endpoint_remap,
|
|
const crnlib::vector<uint>* pAlpha_selector_remap) {
|
|
uint first_chunk = m_mip_groups[group].m_first_chunk;
|
|
uint num_chunks = m_mip_groups[group].m_num_chunks;
|
|
uint chunk_width = m_mip_groups[group].m_chunk_width;
|
|
|
|
if (!pCodec) {
|
|
m_chunk_encoding_hist.resize(256);
|
|
if (clear_histograms)
|
|
m_chunk_encoding_hist.set_all(0);
|
|
|
|
if (pColor_endpoint_remap) {
|
|
CRNLIB_ASSERT(pColor_endpoint_remap->size() == m_hvq.get_color_endpoint_codebook_size());
|
|
m_endpoint_index_hist[0].resize(pColor_endpoint_remap->size());
|
|
if (clear_histograms)
|
|
m_endpoint_index_hist[0].set_all(0);
|
|
}
|
|
|
|
if (pColor_selector_remap) {
|
|
CRNLIB_ASSERT(pColor_selector_remap->size() == m_hvq.get_color_selector_codebook_size());
|
|
m_selector_index_hist[0].resize(pColor_selector_remap->size());
|
|
if (clear_histograms)
|
|
m_selector_index_hist[0].set_all(0);
|
|
}
|
|
|
|
if (pAlpha_endpoint_remap) {
|
|
CRNLIB_ASSERT(pAlpha_endpoint_remap->size() == m_hvq.get_alpha_endpoint_codebook_size());
|
|
m_endpoint_index_hist[1].resize(pAlpha_endpoint_remap->size());
|
|
if (clear_histograms)
|
|
m_endpoint_index_hist[1].set_all(0);
|
|
}
|
|
|
|
if (pAlpha_selector_remap) {
|
|
CRNLIB_ASSERT(pAlpha_selector_remap->size() == m_hvq.get_alpha_selector_codebook_size());
|
|
m_selector_index_hist[1].resize(pAlpha_selector_remap->size());
|
|
if (clear_histograms)
|
|
m_selector_index_hist[1].set_all(0);
|
|
}
|
|
}
|
|
|
|
uint endpoint_index[cNumComps] = {};
|
|
const crnlib::vector<uint>* endpoint_remap[cNumComps] = {};
|
|
const crnlib::vector<uint>* selector_remap[cNumComps] = {};
|
|
for (uint c = 0; c < cNumComps; c++) {
|
|
if (m_has_comp[c]) {
|
|
endpoint_remap[c] = c ? pAlpha_endpoint_remap : pColor_endpoint_remap;
|
|
selector_remap[c] = c ? pAlpha_selector_remap : pColor_selector_remap;
|
|
}
|
|
}
|
|
|
|
for (uint by = 0, block_width = chunk_width << 1, b = first_chunk << 2, bEnd = b + (num_chunks << 2); b < bEnd; by++) {
|
|
for (uint bx = 0; bx < block_width; bx++, b++) {
|
|
if (!(by & 1) && !(bx & 1)) {
|
|
uint8 reference_group = m_endpoint_indices[b].reference | m_endpoint_indices[b + block_width].reference << 2 |
|
|
m_endpoint_indices[b + 1].reference << 4 | m_endpoint_indices[b + block_width + 1].reference << 6;
|
|
if (pCodec)
|
|
pCodec->encode(reference_group, m_reference_encoding_dm);
|
|
else
|
|
m_chunk_encoding_hist.inc_freq(reference_group);
|
|
}
|
|
for (uint c = 0; c < cNumComps; c++) {
|
|
if (endpoint_remap[c]) {
|
|
uint index = (*endpoint_remap[c])[m_endpoint_indices[b].component[c]];
|
|
if (!m_endpoint_indices[b].reference) {
|
|
int sym = index - endpoint_index[c];
|
|
if (sym < 0)
|
|
sym += endpoint_remap[c]->size();
|
|
if (!pCodec)
|
|
m_endpoint_index_hist[c ? 1 : 0].inc_freq(sym);
|
|
else
|
|
pCodec->encode(sym, m_endpoint_index_dm[c ? 1 : 0]);
|
|
}
|
|
endpoint_index[c] = index;
|
|
}
|
|
}
|
|
for (uint c = 0; c < cNumComps; c++) {
|
|
if (selector_remap[c]) {
|
|
uint index = (*selector_remap[c])[m_selector_indices[b].component[c]];
|
|
if (!pCodec)
|
|
m_selector_index_hist[c ? 1 : 0].inc_freq(index);
|
|
else
|
|
pCodec->encode(index, m_selector_index_dm[c ? 1 : 0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void crn_comp::append_vec(crnlib::vector<uint8>& a, const void* p, uint size) {
|
|
if (size) {
|
|
uint ofs = a.size();
|
|
a.resize(ofs + size);
|
|
|
|
memcpy(&a[ofs], p, size);
|
|
}
|
|
}
|
|
|
|
void crn_comp::append_vec(crnlib::vector<uint8>& a, const crnlib::vector<uint8>& b) {
|
|
if (!b.empty()) {
|
|
uint ofs = a.size();
|
|
a.resize(ofs + b.size());
|
|
|
|
memcpy(&a[ofs], &b[0], b.size());
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
bool crn_comp::init_chunk_encoding_dm()
|
|
{
|
|
symbol_histogram hist(1 << (3 * cEncodingMapNumChunksPerCode));
|
|
|
|
for (uint chunk_index = 0; chunk_index < m_hvq.get_num_chunks(); chunk_index += cEncodingMapNumChunksPerCode)
|
|
{
|
|
uint index = 0;
|
|
for (uint i = 0; i < cEncodingMapNumChunksPerCode; i++)
|
|
{
|
|
if ((chunk_index + i) >= m_hvq.get_num_chunks())
|
|
break;
|
|
const dxt_hc::chunk_encoding& encoding = m_hvq.get_chunk_encoding(chunk_index + i);
|
|
|
|
index |= (encoding.m_encoding_index << (i * 3));
|
|
}
|
|
|
|
hist.inc_freq(index);
|
|
}
|
|
|
|
if (!m_chunk_encoding_dm.init(true, hist, 16))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
bool crn_comp::alias_images() {
|
|
for (uint face_index = 0; face_index < m_pParams->m_faces; face_index++) {
|
|
for (uint level_index = 0; level_index < m_pParams->m_levels; level_index++) {
|
|
const uint width = math::maximum(1U, m_pParams->m_width >> level_index);
|
|
const uint height = math::maximum(1U, m_pParams->m_height >> level_index);
|
|
|
|
if (!m_pParams->m_pImages[face_index][level_index])
|
|
return false;
|
|
|
|
m_images[face_index][level_index].alias((color_quad_u8*)m_pParams->m_pImages[face_index][level_index], width, height);
|
|
}
|
|
}
|
|
|
|
image_utils::conversion_type conv_type = image_utils::get_image_conversion_type_from_crn_format((crn_format)m_pParams->m_format);
|
|
if (conv_type != image_utils::cConversion_Invalid) {
|
|
for (uint face_index = 0; face_index < m_pParams->m_faces; face_index++) {
|
|
for (uint level_index = 0; level_index < m_pParams->m_levels; level_index++) {
|
|
image_u8 cooked_image(m_images[face_index][level_index]);
|
|
|
|
image_utils::convert_image(cooked_image, conv_type);
|
|
|
|
m_images[face_index][level_index].swap(cooked_image);
|
|
}
|
|
}
|
|
}
|
|
|
|
m_mip_groups.clear();
|
|
m_mip_groups.resize(m_pParams->m_levels);
|
|
|
|
utils::zero_object(m_levels);
|
|
|
|
uint mip_group = 0;
|
|
uint chunk_index = 0;
|
|
uint mip_group_chunk_index = 0;
|
|
(void)mip_group_chunk_index;
|
|
for (uint level_index = 0; level_index < m_pParams->m_levels; level_index++) {
|
|
const uint width = math::maximum(1U, m_pParams->m_width >> level_index);
|
|
const uint height = math::maximum(1U, m_pParams->m_height >> level_index);
|
|
const uint chunk_width = math::align_up_value(width, cChunkPixelWidth) / cChunkPixelWidth;
|
|
const uint chunk_height = math::align_up_value(height, cChunkPixelHeight) / cChunkPixelHeight;
|
|
const uint num_chunks = m_pParams->m_faces * chunk_width * chunk_height;
|
|
|
|
m_mip_groups[mip_group].m_first_chunk = chunk_index;
|
|
mip_group_chunk_index = 0;
|
|
|
|
m_mip_groups[mip_group].m_num_chunks += num_chunks;
|
|
m_mip_groups[mip_group].m_chunk_width = chunk_width;
|
|
|
|
m_levels[level_index].m_width = width;
|
|
m_levels[level_index].m_height = height;
|
|
m_levels[level_index].m_chunk_width = chunk_width;
|
|
m_levels[level_index].m_chunk_height = chunk_height;
|
|
m_levels[level_index].m_first_chunk = chunk_index;
|
|
m_levels[level_index].m_num_chunks = num_chunks;
|
|
m_levels[level_index].m_group_index = mip_group;
|
|
m_levels[level_index].m_group_first_chunk = 0;
|
|
|
|
chunk_index += num_chunks;
|
|
|
|
mip_group++;
|
|
}
|
|
|
|
m_total_chunks = chunk_index;
|
|
|
|
return true;
|
|
}
|
|
|
|
void crn_comp::append_chunks(const image_u8& img, uint num_chunks_x, uint num_chunks_y, dxt_hc::pixel_chunk_vec& chunks, float weight) {
|
|
for (uint y = 0; y < num_chunks_y; y++) {
|
|
for (uint legacy_index = chunks.size(), x = 0; x < num_chunks_x; x++) {
|
|
chunks.resize(chunks.size() + 1);
|
|
|
|
dxt_hc::pixel_chunk& chunk = chunks.back();
|
|
chunk.m_weight = weight;
|
|
chunk.m_legacy_index = legacy_index + (y & 1 ? num_chunks_x - 1 - x : x);
|
|
|
|
for (uint cy = 0; cy < cChunkPixelHeight; cy++) {
|
|
uint py = y * cChunkPixelHeight + cy;
|
|
py = math::minimum(py, img.get_height() - 1);
|
|
|
|
for (uint cx = 0; cx < cChunkPixelWidth; cx++) {
|
|
uint px = x * cChunkPixelWidth + cx;
|
|
px = math::minimum(px, img.get_width() - 1);
|
|
|
|
chunk(cx, cy) = img(px, py);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void crn_comp::create_chunks() {
|
|
m_chunks.reserve(m_total_chunks);
|
|
m_chunks.resize(0);
|
|
|
|
for (uint level = 0; level < m_pParams->m_levels; level++) {
|
|
for (uint face = 0; face < m_pParams->m_faces; face++) {
|
|
if (!face) {
|
|
CRNLIB_ASSERT(m_levels[level].m_first_chunk == m_chunks.size());
|
|
}
|
|
|
|
float mip_weight = math::minimum(12.0f, powf(1.3f, static_cast<float>(level)));
|
|
//float mip_weight = 1.0f;
|
|
|
|
append_chunks(m_images[face][level], m_levels[level].m_chunk_width, m_levels[level].m_chunk_height, m_chunks, mip_weight);
|
|
}
|
|
}
|
|
|
|
CRNLIB_ASSERT(m_chunks.size() == m_total_chunks);
|
|
}
|
|
|
|
void crn_comp::clear() {
|
|
m_pParams = NULL;
|
|
|
|
for (uint f = 0; f < cCRNMaxFaces; f++)
|
|
for (uint l = 0; l < cCRNMaxLevels; l++)
|
|
m_images[f][l].clear();
|
|
|
|
utils::zero_object(m_levels);
|
|
|
|
m_mip_groups.clear();
|
|
|
|
utils::zero_object(m_has_comp);
|
|
|
|
m_endpoint_indices.clear();
|
|
m_selector_indices.clear();
|
|
|
|
m_total_chunks = 0;
|
|
|
|
m_chunks.clear();
|
|
|
|
utils::zero_object(m_crn_header);
|
|
|
|
m_comp_data.clear();
|
|
|
|
m_hvq.clear();
|
|
|
|
m_chunk_encoding_hist.clear();
|
|
m_reference_encoding_dm.clear();
|
|
for (uint i = 0; i < 2; i++) {
|
|
m_endpoint_index_hist[i].clear();
|
|
m_endpoint_index_dm[i].clear();
|
|
m_selector_index_hist[i].clear();
|
|
m_selector_index_dm[i].clear();
|
|
}
|
|
|
|
for (uint i = 0; i < cCRNMaxLevels; i++)
|
|
m_packed_chunks[i].clear();
|
|
|
|
m_packed_data_models.clear();
|
|
|
|
m_packed_color_endpoints.clear();
|
|
m_packed_color_selectors.clear();
|
|
m_packed_alpha_endpoints.clear();
|
|
m_packed_alpha_selectors.clear();
|
|
}
|
|
|
|
bool crn_comp::quantize_chunks() {
|
|
dxt_hc::params params;
|
|
|
|
params.m_adaptive_tile_alpha_psnr_derating = m_pParams->m_crn_adaptive_tile_alpha_psnr_derating;
|
|
params.m_adaptive_tile_color_psnr_derating = m_pParams->m_crn_adaptive_tile_color_psnr_derating;
|
|
|
|
if (m_pParams->m_flags & cCRNCompFlagManualPaletteSizes) {
|
|
params.m_color_endpoint_codebook_size = math::clamp<int>(m_pParams->m_crn_color_endpoint_palette_size, cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
params.m_color_selector_codebook_size = math::clamp<int>(m_pParams->m_crn_color_selector_palette_size, cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
params.m_alpha_endpoint_codebook_size = math::clamp<int>(m_pParams->m_crn_alpha_endpoint_palette_size, cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
params.m_alpha_selector_codebook_size = math::clamp<int>(m_pParams->m_crn_alpha_selector_palette_size, cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
} else {
|
|
uint max_codebook_entries = ((m_pParams->m_width + 3) / 4) * ((m_pParams->m_height + 3) / 4);
|
|
|
|
max_codebook_entries = math::clamp<uint>(max_codebook_entries, cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
|
|
float quality = math::clamp<float>((float)m_pParams->m_quality_level / cCRNMaxQualityLevel, 0.0f, 1.0f);
|
|
float color_quality_power_mul = 1.0f;
|
|
float alpha_quality_power_mul = 1.0f;
|
|
if (m_pParams->m_format == cCRNFmtDXT5_CCxY) {
|
|
color_quality_power_mul = 3.5f;
|
|
alpha_quality_power_mul = .35f;
|
|
params.m_adaptive_tile_color_psnr_derating = 5.0f;
|
|
} else if (m_pParams->m_format == cCRNFmtDXT5)
|
|
color_quality_power_mul = .75f;
|
|
|
|
float color_endpoint_quality = powf(quality, 1.8f * color_quality_power_mul);
|
|
float color_selector_quality = powf(quality, 1.65f * color_quality_power_mul);
|
|
params.m_color_endpoint_codebook_size = math::clamp<uint>(math::float_to_uint(.5f + math::lerp<float>(math::maximum<float>(64, cCRNMinPaletteSize), (float)max_codebook_entries, color_endpoint_quality)), cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
params.m_color_selector_codebook_size = math::clamp<uint>(math::float_to_uint(.5f + math::lerp<float>(math::maximum<float>(96, cCRNMinPaletteSize), (float)max_codebook_entries, color_selector_quality)), cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
|
|
float alpha_endpoint_quality = powf(quality, 2.1f * alpha_quality_power_mul);
|
|
float alpha_selector_quality = powf(quality, 1.65f * alpha_quality_power_mul);
|
|
params.m_alpha_endpoint_codebook_size = math::clamp<uint>(math::float_to_uint(.5f + math::lerp<float>(math::maximum<float>(24, cCRNMinPaletteSize), (float)max_codebook_entries, alpha_endpoint_quality)), cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
;
|
|
params.m_alpha_selector_codebook_size = math::clamp<uint>(math::float_to_uint(.5f + math::lerp<float>(math::maximum<float>(48, cCRNMinPaletteSize), (float)max_codebook_entries, alpha_selector_quality)), cCRNMinPaletteSize, cCRNMaxPaletteSize);
|
|
;
|
|
}
|
|
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging) {
|
|
console::debug("Color endpoints: %u", params.m_color_endpoint_codebook_size);
|
|
console::debug("Color selectors: %u", params.m_color_selector_codebook_size);
|
|
console::debug("Alpha endpoints: %u", params.m_alpha_endpoint_codebook_size);
|
|
console::debug("Alpha selectors: %u", params.m_alpha_selector_codebook_size);
|
|
}
|
|
|
|
params.m_hierarchical = (m_pParams->m_flags & cCRNCompFlagHierarchical) != 0;
|
|
params.m_perceptual = (m_pParams->m_flags & cCRNCompFlagPerceptual) != 0;
|
|
|
|
params.m_pProgress_func = m_pParams->m_pProgress_func;
|
|
params.m_pProgress_func_data = m_pParams->m_pProgress_func_data;
|
|
|
|
switch (m_pParams->m_format) {
|
|
case cCRNFmtDXT1: {
|
|
params.m_format = cDXT1;
|
|
m_has_comp[cColor] = true;
|
|
break;
|
|
}
|
|
case cCRNFmtDXT3: {
|
|
m_has_comp[cAlpha0] = true;
|
|
return false;
|
|
}
|
|
case cCRNFmtDXT5: {
|
|
params.m_format = cDXT5;
|
|
params.m_alpha_component_indices[0] = m_pParams->m_alpha_component;
|
|
m_has_comp[cColor] = true;
|
|
m_has_comp[cAlpha0] = true;
|
|
break;
|
|
}
|
|
case cCRNFmtDXT5_CCxY: {
|
|
params.m_format = cDXT5;
|
|
params.m_alpha_component_indices[0] = 3;
|
|
m_has_comp[cColor] = true;
|
|
m_has_comp[cAlpha0] = true;
|
|
params.m_perceptual = false;
|
|
|
|
//params.m_adaptive_tile_color_alpha_weighting_ratio = 1.0f;
|
|
params.m_adaptive_tile_color_alpha_weighting_ratio = 1.5f;
|
|
break;
|
|
}
|
|
case cCRNFmtDXT5_xGBR:
|
|
case cCRNFmtDXT5_AGBR:
|
|
case cCRNFmtDXT5_xGxR: {
|
|
params.m_format = cDXT5;
|
|
params.m_alpha_component_indices[0] = 3;
|
|
m_has_comp[cColor] = true;
|
|
m_has_comp[cAlpha0] = true;
|
|
params.m_perceptual = false;
|
|
break;
|
|
}
|
|
case cCRNFmtDXN_XY: {
|
|
params.m_format = cDXN_XY;
|
|
params.m_alpha_component_indices[0] = 0;
|
|
params.m_alpha_component_indices[1] = 1;
|
|
m_has_comp[cAlpha0] = true;
|
|
m_has_comp[cAlpha1] = true;
|
|
params.m_perceptual = false;
|
|
break;
|
|
}
|
|
case cCRNFmtDXN_YX: {
|
|
params.m_format = cDXN_YX;
|
|
params.m_alpha_component_indices[0] = 1;
|
|
params.m_alpha_component_indices[1] = 0;
|
|
m_has_comp[cAlpha0] = true;
|
|
m_has_comp[cAlpha1] = true;
|
|
params.m_perceptual = false;
|
|
break;
|
|
}
|
|
case cCRNFmtDXT5A: {
|
|
params.m_format = cDXT5A;
|
|
params.m_alpha_component_indices[0] = m_pParams->m_alpha_component;
|
|
m_has_comp[cAlpha0] = true;
|
|
params.m_perceptual = false;
|
|
break;
|
|
}
|
|
case cCRNFmtETC1: {
|
|
console::warning("crn_comp::quantize_chunks: This class does not support ETC1");
|
|
return false;
|
|
}
|
|
default: {
|
|
return false;
|
|
}
|
|
}
|
|
params.m_debugging = (m_pParams->m_flags & cCRNCompFlagDebugging) != 0;
|
|
|
|
params.m_num_levels = m_pParams->m_levels;
|
|
for (uint i = 0; i < m_pParams->m_levels; i++) {
|
|
params.m_levels[i].m_first_chunk = m_levels[i].m_first_chunk;
|
|
params.m_levels[i].m_num_chunks = m_levels[i].m_num_chunks;
|
|
params.m_levels[i].m_chunk_width = m_levels[i].m_chunk_width;
|
|
}
|
|
|
|
params.m_endpoint_indices = &m_endpoint_indices;
|
|
params.m_selector_indices = &m_selector_indices;
|
|
|
|
if (!m_hvq.compress(params, m_total_chunks, &m_chunks[0], m_task_pool))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
struct optimize_color_endpoint_codebook_params {
|
|
struct trial {
|
|
crnlib::vector<uint> remapping;
|
|
crnlib::vector<uint8> packed_endpoints;
|
|
uint total_bits;
|
|
} *m_trial;
|
|
hist_type* m_xhist;
|
|
uint m_iter_index;
|
|
uint m_max_iter_index;
|
|
};
|
|
|
|
void crn_comp::optimize_color_endpoint_codebook_task(uint64 data, void* pData_ptr) {
|
|
data;
|
|
optimize_color_endpoint_codebook_params* pParams = reinterpret_cast<optimize_color_endpoint_codebook_params*>(pData_ptr);
|
|
crnlib::vector<uint>& remapping = pParams->m_trial->remapping;
|
|
|
|
if (pParams->m_iter_index == pParams->m_max_iter_index) {
|
|
sort_color_endpoint_codebook(remapping, m_hvq.get_color_endpoint_vec());
|
|
} else {
|
|
create_zeng_reorder_table(
|
|
m_hvq.get_color_endpoint_codebook_size(),
|
|
*pParams->m_xhist,
|
|
remapping,
|
|
pParams->m_iter_index ? color_endpoint_similarity_func : NULL,
|
|
&m_hvq,
|
|
pParams->m_iter_index / static_cast<float>(pParams->m_max_iter_index - 1));
|
|
}
|
|
|
|
pack_color_endpoints(pParams->m_trial->packed_endpoints, remapping, pParams->m_iter_index);
|
|
uint total_bits = pParams->m_trial->packed_endpoints.size() << 3;
|
|
uint codebook_size = remapping.size();
|
|
|
|
crnlib::vector<uint> hist(codebook_size);
|
|
for (uint group = 0; group < m_mip_groups.size(); group++) {
|
|
for (uint endpoint_index = 0, b = m_mip_groups[group].m_first_chunk << 2, bEnd = b + (m_mip_groups[group].m_num_chunks << 2); b < bEnd; b++) {
|
|
uint index = remapping[m_endpoint_indices[b].component[cColor]];
|
|
if (!m_endpoint_indices[b].reference) {
|
|
int sym = index - endpoint_index;
|
|
hist[sym < 0 ? sym + codebook_size : sym]++;
|
|
}
|
|
endpoint_index = index;
|
|
}
|
|
}
|
|
|
|
static_huffman_data_model dm;
|
|
dm.init(true, codebook_size, hist.get_ptr(), 16);
|
|
const uint8* code_sizes = dm.get_code_sizes();
|
|
for (uint s = 0; s < codebook_size; s++)
|
|
total_bits += hist[s] * code_sizes[s];
|
|
|
|
symbol_codec codec;
|
|
codec.start_encoding(64 * 1024);
|
|
codec.encode_enable_simulation(true);
|
|
codec.encode_transmit_static_huffman_data_model(dm, false);
|
|
codec.stop_encoding(false);
|
|
total_bits += codec.encode_get_total_bits_written();
|
|
|
|
pParams->m_trial->total_bits = total_bits;
|
|
|
|
crnlib_delete(pParams);
|
|
}
|
|
|
|
bool crn_comp::optimize_color_endpoint_codebook(crnlib::vector<uint>& remapping) {
|
|
if (m_pParams->m_flags & cCRNCompFlagQuick) {
|
|
remapping.resize(m_hvq.get_color_endpoint_vec().size());
|
|
for (uint i = 0; i < m_hvq.get_color_endpoint_vec().size(); i++)
|
|
remapping[i] = i;
|
|
|
|
if (!pack_color_endpoints(m_packed_color_endpoints, remapping, 0))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("----- Begin optimization of color endpoint codebook");
|
|
#endif
|
|
|
|
const uint cMaxEndpointRemapIters = 3;
|
|
optimize_color_endpoint_codebook_params::trial remapping_trial[cMaxEndpointRemapIters + 1];
|
|
|
|
uint n = m_hvq.get_color_endpoint_codebook_size();
|
|
hist_type xhist(n * n);
|
|
for (uint b = 1; b < m_endpoint_indices.size(); b++) {
|
|
if (!m_endpoint_indices[b].reference) {
|
|
update_hist(xhist, m_endpoint_indices[b - 1].color, m_endpoint_indices[b].color, n);
|
|
update_hist(xhist, m_endpoint_indices[b].color, m_endpoint_indices[b - 1].color, n);
|
|
}
|
|
}
|
|
|
|
for (uint i = 0; i <= cMaxEndpointRemapIters; i++) {
|
|
optimize_color_endpoint_codebook_params* pParams = crnlib_new<optimize_color_endpoint_codebook_params>();
|
|
pParams->m_iter_index = i;
|
|
pParams->m_max_iter_index = cMaxEndpointRemapIters;
|
|
pParams->m_trial = remapping_trial + i;
|
|
pParams->m_xhist = &xhist;
|
|
m_task_pool.queue_object_task(this, &crn_comp::optimize_color_endpoint_codebook_task, 0, pParams);
|
|
}
|
|
m_task_pool.join();
|
|
|
|
for (uint best_bits = UINT_MAX, i = 0; i <= cMaxEndpointRemapIters; i++) {
|
|
if (remapping_trial[i].total_bits < best_bits) {
|
|
m_packed_color_endpoints.swap(remapping_trial[i].packed_endpoints);
|
|
remapping.swap(remapping_trial[i].remapping);
|
|
best_bits = remapping_trial[i].total_bits;
|
|
}
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("End optimization of color endpoint codebook");
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::optimize_color_selector_codebook(crnlib::vector<uint>& remapping) {
|
|
if (m_pParams->m_flags & cCRNCompFlagQuick) {
|
|
remapping.resize(m_hvq.get_color_selectors_vec().size());
|
|
for (uint i = 0; i < m_hvq.get_color_selectors_vec().size(); i++)
|
|
remapping[i] = i;
|
|
} else {
|
|
sort_selector_codebook(remapping, m_hvq.get_color_selectors_vec(), g_dxt1_to_linear);
|
|
}
|
|
return pack_selectors(m_packed_color_selectors, m_hvq.get_color_selectors_vec(), remapping, 3, g_dxt1_to_linear, 0);
|
|
}
|
|
|
|
struct optimize_alpha_endpoint_codebook_params {
|
|
struct trial {
|
|
crnlib::vector<uint> remapping;
|
|
crnlib::vector<uint8> packed_endpoints;
|
|
uint total_bits;
|
|
} *m_trial;
|
|
hist_type* m_xhist;
|
|
uint m_iter_index;
|
|
uint m_max_iter_index;
|
|
};
|
|
|
|
void crn_comp::optimize_alpha_endpoint_codebook_task(uint64 data, void* pData_ptr) {
|
|
data;
|
|
optimize_alpha_endpoint_codebook_params* pParams = reinterpret_cast<optimize_alpha_endpoint_codebook_params*>(pData_ptr);
|
|
crnlib::vector<uint>& remapping = pParams->m_trial->remapping;
|
|
|
|
if (pParams->m_iter_index == pParams->m_max_iter_index) {
|
|
sort_alpha_endpoint_codebook(remapping, m_hvq.get_alpha_endpoint_vec());
|
|
} else {
|
|
create_zeng_reorder_table(
|
|
m_hvq.get_alpha_endpoint_codebook_size(),
|
|
*pParams->m_xhist,
|
|
remapping,
|
|
pParams->m_iter_index ? alpha_endpoint_similarity_func : NULL,
|
|
&m_hvq,
|
|
pParams->m_iter_index / static_cast<float>(pParams->m_max_iter_index - 1));
|
|
}
|
|
|
|
pack_alpha_endpoints(pParams->m_trial->packed_endpoints, remapping, pParams->m_iter_index);
|
|
uint total_bits = pParams->m_trial->packed_endpoints.size() << 3;
|
|
uint codebook_size = remapping.size();
|
|
|
|
crnlib::vector<uint> hist(codebook_size);
|
|
bool hasAlpha0 = m_has_comp[cAlpha0], hasAlpha1 = m_has_comp[cAlpha1];
|
|
for (uint group = 0; group < m_mip_groups.size(); group++) {
|
|
for (uint index0 = 0, index1 = 0, b = m_mip_groups[group].m_first_chunk << 2, bEnd = b + (m_mip_groups[group].m_num_chunks << 2); b < bEnd; b++) {
|
|
if (hasAlpha0) {
|
|
uint index = remapping[m_endpoint_indices[b].component[cAlpha0]];
|
|
if (!m_endpoint_indices[b].reference) {
|
|
int sym = index - index0;
|
|
hist[sym < 0 ? sym + codebook_size : sym]++;
|
|
}
|
|
index0 = index;
|
|
}
|
|
if (hasAlpha1) {
|
|
uint index = remapping[m_endpoint_indices[b].component[cAlpha1]];
|
|
if (!m_endpoint_indices[b].reference) {
|
|
int sym = index - index1;
|
|
hist[sym < 0 ? sym + codebook_size : sym]++;
|
|
}
|
|
index1 = index;
|
|
}
|
|
}
|
|
}
|
|
|
|
static_huffman_data_model dm;
|
|
dm.init(true, codebook_size, hist.get_ptr(), 16);
|
|
const uint8* code_sizes = dm.get_code_sizes();
|
|
for (uint s = 0; s < codebook_size; s++)
|
|
total_bits += hist[s] * code_sizes[s];
|
|
|
|
symbol_codec codec;
|
|
codec.start_encoding(64 * 1024);
|
|
codec.encode_enable_simulation(true);
|
|
codec.encode_transmit_static_huffman_data_model(dm, false);
|
|
codec.stop_encoding(false);
|
|
total_bits += codec.encode_get_total_bits_written();
|
|
|
|
pParams->m_trial->total_bits = total_bits;
|
|
|
|
crnlib_delete(pParams);
|
|
}
|
|
|
|
bool crn_comp::optimize_alpha_endpoint_codebook(crnlib::vector<uint>& remapping) {
|
|
if (m_pParams->m_flags & cCRNCompFlagQuick) {
|
|
remapping.resize(m_hvq.get_alpha_endpoint_vec().size());
|
|
for (uint i = 0; i < m_hvq.get_alpha_endpoint_vec().size(); i++)
|
|
remapping[i] = i;
|
|
|
|
if (!pack_alpha_endpoints(m_packed_alpha_endpoints, remapping, 0))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("----- Begin optimization of alpha endpoint codebook");
|
|
#endif
|
|
|
|
const uint cMaxEndpointRemapIters = 3;
|
|
optimize_alpha_endpoint_codebook_params::trial remapping_trial[cMaxEndpointRemapIters + 1];
|
|
|
|
uint n = m_hvq.get_alpha_endpoint_codebook_size();
|
|
hist_type xhist(n * n);
|
|
bool hasAlpha0 = m_has_comp[cAlpha0], hasAlpha1 = m_has_comp[cAlpha1];
|
|
for (uint b = 1; b < m_endpoint_indices.size(); b++) {
|
|
if (!m_endpoint_indices[b].reference) {
|
|
if (hasAlpha0) {
|
|
update_hist(xhist, m_endpoint_indices[b - 1].alpha0, m_endpoint_indices[b].alpha0, n);
|
|
update_hist(xhist, m_endpoint_indices[b].alpha0, m_endpoint_indices[b - 1].alpha0, n);
|
|
}
|
|
if (hasAlpha1) {
|
|
update_hist(xhist, m_endpoint_indices[b - 1].alpha1, m_endpoint_indices[b].alpha1, n);
|
|
update_hist(xhist, m_endpoint_indices[b].alpha1, m_endpoint_indices[b - 1].alpha1, n);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (uint i = 0; i <= cMaxEndpointRemapIters; i++) {
|
|
optimize_alpha_endpoint_codebook_params* pParams = crnlib_new<optimize_alpha_endpoint_codebook_params>();
|
|
pParams->m_iter_index = i;
|
|
pParams->m_max_iter_index = cMaxEndpointRemapIters;
|
|
pParams->m_trial = remapping_trial + i;
|
|
pParams->m_xhist = &xhist;
|
|
m_task_pool.queue_object_task(this, &crn_comp::optimize_alpha_endpoint_codebook_task, 0, pParams);
|
|
}
|
|
m_task_pool.join();
|
|
|
|
for (uint best_bits = UINT_MAX, i = 0; i <= cMaxEndpointRemapIters; i++) {
|
|
if (remapping_trial[i].total_bits < best_bits) {
|
|
m_packed_alpha_endpoints.swap(remapping_trial[i].packed_endpoints);
|
|
remapping.swap(remapping_trial[i].remapping);
|
|
best_bits = remapping_trial[i].total_bits;
|
|
}
|
|
}
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
console::debug("End optimization of alpha endpoint codebook");
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::optimize_alpha_selector_codebook(crnlib::vector<uint>& remapping) {
|
|
if (m_pParams->m_flags & cCRNCompFlagQuick) {
|
|
remapping.resize(m_hvq.get_alpha_selectors_vec().size());
|
|
for (uint i = 0; i < m_hvq.get_alpha_selectors_vec().size(); i++)
|
|
remapping[i] = i;
|
|
} else {
|
|
sort_selector_codebook(remapping, m_hvq.get_alpha_selectors_vec(), g_dxt5_to_linear);
|
|
}
|
|
return pack_selectors(m_packed_alpha_selectors, m_hvq.get_alpha_selectors_vec(), remapping, 7, g_dxt5_to_linear, 0);
|
|
}
|
|
|
|
bool crn_comp::pack_data_models() {
|
|
symbol_codec codec;
|
|
codec.start_encoding(1024 * 1024);
|
|
|
|
if (!codec.encode_transmit_static_huffman_data_model(m_reference_encoding_dm, false))
|
|
return false;
|
|
|
|
for (uint i = 0; i < 2; i++) {
|
|
if (m_endpoint_index_dm[i].get_total_syms()) {
|
|
if (!codec.encode_transmit_static_huffman_data_model(m_endpoint_index_dm[i], false))
|
|
return false;
|
|
}
|
|
|
|
if (m_selector_index_dm[i].get_total_syms()) {
|
|
if (!codec.encode_transmit_static_huffman_data_model(m_selector_index_dm[i], false))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
codec.stop_encoding(false);
|
|
|
|
m_packed_data_models.swap(codec.get_encoding_buf());
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::create_comp_data() {
|
|
utils::zero_object(m_crn_header);
|
|
|
|
m_crn_header.m_width = static_cast<uint16>(m_pParams->m_width);
|
|
m_crn_header.m_height = static_cast<uint16>(m_pParams->m_height);
|
|
m_crn_header.m_levels = static_cast<uint8>(m_pParams->m_levels);
|
|
m_crn_header.m_faces = static_cast<uint8>(m_pParams->m_faces);
|
|
m_crn_header.m_format = static_cast<uint8>(m_pParams->m_format);
|
|
m_crn_header.m_userdata0 = m_pParams->m_userdata0;
|
|
m_crn_header.m_userdata1 = m_pParams->m_userdata1;
|
|
|
|
m_comp_data.clear();
|
|
m_comp_data.reserve(2 * 1024 * 1024);
|
|
append_vec(m_comp_data, &m_crn_header, sizeof(m_crn_header));
|
|
// tack on the rest of the variable size m_level_ofs array
|
|
m_comp_data.resize(m_comp_data.size() + sizeof(m_crn_header.m_level_ofs[0]) * (m_pParams->m_levels - 1));
|
|
|
|
if (m_packed_color_endpoints.size()) {
|
|
m_crn_header.m_color_endpoints.m_num = static_cast<uint16>(m_hvq.get_color_endpoint_codebook_size());
|
|
m_crn_header.m_color_endpoints.m_size = m_packed_color_endpoints.size();
|
|
m_crn_header.m_color_endpoints.m_ofs = m_comp_data.size();
|
|
append_vec(m_comp_data, m_packed_color_endpoints);
|
|
}
|
|
|
|
if (m_packed_color_selectors.size()) {
|
|
m_crn_header.m_color_selectors.m_num = static_cast<uint16>(m_hvq.get_color_selector_codebook_size());
|
|
m_crn_header.m_color_selectors.m_size = m_packed_color_selectors.size();
|
|
m_crn_header.m_color_selectors.m_ofs = m_comp_data.size();
|
|
append_vec(m_comp_data, m_packed_color_selectors);
|
|
}
|
|
|
|
if (m_packed_alpha_endpoints.size()) {
|
|
m_crn_header.m_alpha_endpoints.m_num = static_cast<uint16>(m_hvq.get_alpha_endpoint_codebook_size());
|
|
m_crn_header.m_alpha_endpoints.m_size = m_packed_alpha_endpoints.size();
|
|
m_crn_header.m_alpha_endpoints.m_ofs = m_comp_data.size();
|
|
append_vec(m_comp_data, m_packed_alpha_endpoints);
|
|
}
|
|
|
|
if (m_packed_alpha_selectors.size()) {
|
|
m_crn_header.m_alpha_selectors.m_num = static_cast<uint16>(m_hvq.get_alpha_selector_codebook_size());
|
|
m_crn_header.m_alpha_selectors.m_size = m_packed_alpha_selectors.size();
|
|
m_crn_header.m_alpha_selectors.m_ofs = m_comp_data.size();
|
|
append_vec(m_comp_data, m_packed_alpha_selectors);
|
|
}
|
|
|
|
m_crn_header.m_tables_ofs = m_comp_data.size();
|
|
m_crn_header.m_tables_size = m_packed_data_models.size();
|
|
append_vec(m_comp_data, m_packed_data_models);
|
|
|
|
uint level_ofs[cCRNMaxLevels];
|
|
for (uint i = 0; i < m_mip_groups.size(); i++) {
|
|
level_ofs[i] = m_comp_data.size();
|
|
append_vec(m_comp_data, m_packed_chunks[i]);
|
|
}
|
|
|
|
crnd::crn_header& dst_header = *(crnd::crn_header*)&m_comp_data[0];
|
|
// don't change the m_comp_data vector - or dst_header will be invalidated!
|
|
|
|
memcpy(&dst_header, &m_crn_header, sizeof(dst_header));
|
|
|
|
for (uint i = 0; i < m_mip_groups.size(); i++)
|
|
dst_header.m_level_ofs[i] = level_ofs[i];
|
|
|
|
const uint actual_header_size = sizeof(crnd::crn_header) + sizeof(dst_header.m_level_ofs[0]) * (m_mip_groups.size() - 1);
|
|
|
|
dst_header.m_sig = crnd::crn_header::cCRNSigValue;
|
|
|
|
dst_header.m_data_size = m_comp_data.size();
|
|
dst_header.m_data_crc16 = crc16(&m_comp_data[actual_header_size], m_comp_data.size() - actual_header_size);
|
|
|
|
dst_header.m_header_size = actual_header_size;
|
|
dst_header.m_header_crc16 = crc16(&dst_header.m_data_size, actual_header_size - (uint)((uint8*)&dst_header.m_data_size - (uint8*)&dst_header));
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::update_progress(uint phase_index, uint subphase_index, uint subphase_total) {
|
|
if (!m_pParams->m_pProgress_func)
|
|
return true;
|
|
|
|
#if CRNLIB_ENABLE_DEBUG_MESSAGES
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging)
|
|
return true;
|
|
#endif
|
|
|
|
return (*m_pParams->m_pProgress_func)(phase_index, cTotalCompressionPhases, subphase_index, subphase_total, m_pParams->m_pProgress_func_data) != 0;
|
|
}
|
|
|
|
bool crn_comp::compress_internal() {
|
|
if (!alias_images())
|
|
return false;
|
|
|
|
create_chunks();
|
|
|
|
if (!quantize_chunks())
|
|
return false;
|
|
|
|
crnlib::vector<uint> endpoint_remap[2];
|
|
crnlib::vector<uint> selector_remap[2];
|
|
|
|
if (m_has_comp[cColor]) {
|
|
if (!optimize_color_endpoint_codebook(endpoint_remap[0]))
|
|
return false;
|
|
if (!optimize_color_selector_codebook(selector_remap[0]))
|
|
return false;
|
|
}
|
|
|
|
if (m_has_comp[cAlpha0]) {
|
|
if (!optimize_alpha_endpoint_codebook(endpoint_remap[1]))
|
|
return false;
|
|
if (!optimize_alpha_selector_codebook(selector_remap[1]))
|
|
return false;
|
|
}
|
|
|
|
m_chunk_encoding_hist.clear();
|
|
for (uint i = 0; i < 2; i++) {
|
|
m_endpoint_index_hist[i].clear();
|
|
m_endpoint_index_dm[i].clear();
|
|
m_selector_index_hist[i].clear();
|
|
m_selector_index_dm[i].clear();
|
|
}
|
|
|
|
for (uint pass = 0; pass < 2; pass++) {
|
|
for (uint mip_group = 0; mip_group < m_mip_groups.size(); mip_group++) {
|
|
symbol_codec codec;
|
|
codec.start_encoding(2 * 1024 * 1024);
|
|
|
|
if (!pack_chunks(
|
|
mip_group,
|
|
!pass && !mip_group, pass ? &codec : NULL,
|
|
m_has_comp[cColor] ? &endpoint_remap[0] : NULL, m_has_comp[cColor] ? &selector_remap[0] : NULL,
|
|
m_has_comp[cAlpha0] ? &endpoint_remap[1] : NULL, m_has_comp[cAlpha0] ? &selector_remap[1] : NULL)) {
|
|
return false;
|
|
}
|
|
|
|
codec.stop_encoding(false);
|
|
|
|
if (pass)
|
|
m_packed_chunks[mip_group].swap(codec.get_encoding_buf());
|
|
}
|
|
|
|
if (!pass) {
|
|
m_reference_encoding_dm.init(true, m_chunk_encoding_hist, 16);
|
|
|
|
for (uint i = 0; i < 2; i++) {
|
|
if (m_endpoint_index_hist[i].size())
|
|
m_endpoint_index_dm[i].init(true, m_endpoint_index_hist[i], 16);
|
|
|
|
if (m_selector_index_hist[i].size())
|
|
m_selector_index_dm[i].init(true, m_selector_index_hist[i], 16);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!pack_data_models())
|
|
return false;
|
|
|
|
if (!create_comp_data())
|
|
return false;
|
|
|
|
if (!update_progress(24, 1, 1))
|
|
return false;
|
|
|
|
if (m_pParams->m_flags & cCRNCompFlagDebugging) {
|
|
crnlib_print_mem_stats();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::compress_init(const crn_comp_params& params) {
|
|
params;
|
|
return true;
|
|
}
|
|
|
|
bool crn_comp::compress_pass(const crn_comp_params& params, float* pEffective_bitrate) {
|
|
clear();
|
|
|
|
if (pEffective_bitrate)
|
|
*pEffective_bitrate = 0.0f;
|
|
|
|
m_pParams = ¶ms;
|
|
|
|
if ((math::minimum(m_pParams->m_width, m_pParams->m_height) < 1) || (math::maximum(m_pParams->m_width, m_pParams->m_height) > cCRNMaxLevelResolution))
|
|
return false;
|
|
|
|
if (!m_task_pool.init(params.m_num_helper_threads))
|
|
return false;
|
|
|
|
bool status = compress_internal();
|
|
|
|
m_task_pool.deinit();
|
|
|
|
if ((status) && (pEffective_bitrate)) {
|
|
uint total_pixels = 0;
|
|
|
|
for (uint f = 0; f < m_pParams->m_faces; f++)
|
|
for (uint l = 0; l < m_pParams->m_levels; l++)
|
|
total_pixels += m_images[f][l].get_total_pixels();
|
|
|
|
*pEffective_bitrate = (m_comp_data.size() * 8.0f) / total_pixels;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
void crn_comp::compress_deinit() {
|
|
}
|
|
|
|
} // namespace crnlib
|