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-rw-r--r--src/main/jni/libwebp/enc/iterator.c456
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diff --git a/src/main/jni/libwebp/enc/iterator.c b/src/main/jni/libwebp/enc/iterator.c
deleted file mode 100644
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--- a/src/main/jni/libwebp/enc/iterator.c
+++ /dev/null
@@ -1,456 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// VP8Iterator: block iterator
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#include <string.h>
-
-#include "./vp8enci.h"
-
-//------------------------------------------------------------------------------
-// VP8Iterator
-//------------------------------------------------------------------------------
-
-static void InitLeft(VP8EncIterator* const it) {
- it->y_left_[-1] = it->u_left_[-1] = it->v_left_[-1] =
- (it->y_ > 0) ? 129 : 127;
- memset(it->y_left_, 129, 16);
- memset(it->u_left_, 129, 8);
- memset(it->v_left_, 129, 8);
- it->left_nz_[8] = 0;
-}
-
-static void InitTop(VP8EncIterator* const it) {
- const VP8Encoder* const enc = it->enc_;
- const size_t top_size = enc->mb_w_ * 16;
- memset(enc->y_top_, 127, 2 * top_size);
- memset(enc->nz_, 0, enc->mb_w_ * sizeof(*enc->nz_));
-}
-
-void VP8IteratorSetRow(VP8EncIterator* const it, int y) {
- VP8Encoder* const enc = it->enc_;
- it->x_ = 0;
- it->y_ = y;
- it->bw_ = &enc->parts_[y & (enc->num_parts_ - 1)];
- it->preds_ = enc->preds_ + y * 4 * enc->preds_w_;
- it->nz_ = enc->nz_;
- it->mb_ = enc->mb_info_ + y * enc->mb_w_;
- it->y_top_ = enc->y_top_;
- it->uv_top_ = enc->uv_top_;
- InitLeft(it);
-}
-
-void VP8IteratorReset(VP8EncIterator* const it) {
- VP8Encoder* const enc = it->enc_;
- VP8IteratorSetRow(it, 0);
- VP8IteratorSetCountDown(it, enc->mb_w_ * enc->mb_h_); // default
- InitTop(it);
- InitLeft(it);
- memset(it->bit_count_, 0, sizeof(it->bit_count_));
- it->do_trellis_ = 0;
-}
-
-void VP8IteratorSetCountDown(VP8EncIterator* const it, int count_down) {
- it->count_down_ = it->count_down0_ = count_down;
-}
-
-int VP8IteratorIsDone(const VP8EncIterator* const it) {
- return (it->count_down_ <= 0);
-}
-
-void VP8IteratorInit(VP8Encoder* const enc, VP8EncIterator* const it) {
- it->enc_ = enc;
- it->y_stride_ = enc->pic_->y_stride;
- it->uv_stride_ = enc->pic_->uv_stride;
- it->yuv_in_ = (uint8_t*)DO_ALIGN(it->yuv_mem_);
- it->yuv_out_ = it->yuv_in_ + YUV_SIZE;
- it->yuv_out2_ = it->yuv_out_ + YUV_SIZE;
- it->yuv_p_ = it->yuv_out2_ + YUV_SIZE;
- it->lf_stats_ = enc->lf_stats_;
- it->percent0_ = enc->percent_;
- it->y_left_ = (uint8_t*)DO_ALIGN(it->yuv_left_mem_ + 1);
- it->u_left_ = it->y_left_ + 16 + 16;
- it->v_left_ = it->u_left_ + 16;
- VP8IteratorReset(it);
-}
-
-int VP8IteratorProgress(const VP8EncIterator* const it, int delta) {
- VP8Encoder* const enc = it->enc_;
- if (delta && enc->pic_->progress_hook != NULL) {
- const int done = it->count_down0_ - it->count_down_;
- const int percent = (it->count_down0_ <= 0)
- ? it->percent0_
- : it->percent0_ + delta * done / it->count_down0_;
- return WebPReportProgress(enc->pic_, percent, &enc->percent_);
- }
- return 1;
-}
-
-//------------------------------------------------------------------------------
-// Import the source samples into the cache. Takes care of replicating
-// boundary pixels if necessary.
-
-static WEBP_INLINE int MinSize(int a, int b) { return (a < b) ? a : b; }
-
-static void ImportBlock(const uint8_t* src, int src_stride,
- uint8_t* dst, int w, int h, int size) {
- int i;
- for (i = 0; i < h; ++i) {
- memcpy(dst, src, w);
- if (w < size) {
- memset(dst + w, dst[w - 1], size - w);
- }
- dst += BPS;
- src += src_stride;
- }
- for (i = h; i < size; ++i) {
- memcpy(dst, dst - BPS, size);
- dst += BPS;
- }
-}
-
-static void ImportLine(const uint8_t* src, int src_stride,
- uint8_t* dst, int len, int total_len) {
- int i;
- for (i = 0; i < len; ++i, src += src_stride) dst[i] = *src;
- for (; i < total_len; ++i) dst[i] = dst[len - 1];
-}
-
-void VP8IteratorImport(VP8EncIterator* const it, uint8_t* tmp_32) {
- const VP8Encoder* const enc = it->enc_;
- const int x = it->x_, y = it->y_;
- const WebPPicture* const pic = enc->pic_;
- const uint8_t* const ysrc = pic->y + (y * pic->y_stride + x) * 16;
- const uint8_t* const usrc = pic->u + (y * pic->uv_stride + x) * 8;
- const uint8_t* const vsrc = pic->v + (y * pic->uv_stride + x) * 8;
- const int w = MinSize(pic->width - x * 16, 16);
- const int h = MinSize(pic->height - y * 16, 16);
- const int uv_w = (w + 1) >> 1;
- const int uv_h = (h + 1) >> 1;
-
- ImportBlock(ysrc, pic->y_stride, it->yuv_in_ + Y_OFF, w, h, 16);
- ImportBlock(usrc, pic->uv_stride, it->yuv_in_ + U_OFF, uv_w, uv_h, 8);
- ImportBlock(vsrc, pic->uv_stride, it->yuv_in_ + V_OFF, uv_w, uv_h, 8);
-
- if (tmp_32 == NULL) return;
-
- // Import source (uncompressed) samples into boundary.
- if (x == 0) {
- InitLeft(it);
- } else {
- if (y == 0) {
- it->y_left_[-1] = it->u_left_[-1] = it->v_left_[-1] = 127;
- } else {
- it->y_left_[-1] = ysrc[- 1 - pic->y_stride];
- it->u_left_[-1] = usrc[- 1 - pic->uv_stride];
- it->v_left_[-1] = vsrc[- 1 - pic->uv_stride];
- }
- ImportLine(ysrc - 1, pic->y_stride, it->y_left_, h, 16);
- ImportLine(usrc - 1, pic->uv_stride, it->u_left_, uv_h, 8);
- ImportLine(vsrc - 1, pic->uv_stride, it->v_left_, uv_h, 8);
- }
-
- it->y_top_ = tmp_32 + 0;
- it->uv_top_ = tmp_32 + 16;
- if (y == 0) {
- memset(tmp_32, 127, 32 * sizeof(*tmp_32));
- } else {
- ImportLine(ysrc - pic->y_stride, 1, tmp_32, w, 16);
- ImportLine(usrc - pic->uv_stride, 1, tmp_32 + 16, uv_w, 8);
- ImportLine(vsrc - pic->uv_stride, 1, tmp_32 + 16 + 8, uv_w, 8);
- }
-}
-
-//------------------------------------------------------------------------------
-// Copy back the compressed samples into user space if requested.
-
-static void ExportBlock(const uint8_t* src, uint8_t* dst, int dst_stride,
- int w, int h) {
- while (h-- > 0) {
- memcpy(dst, src, w);
- dst += dst_stride;
- src += BPS;
- }
-}
-
-void VP8IteratorExport(const VP8EncIterator* const it) {
- const VP8Encoder* const enc = it->enc_;
- if (enc->config_->show_compressed) {
- const int x = it->x_, y = it->y_;
- const uint8_t* const ysrc = it->yuv_out_ + Y_OFF;
- const uint8_t* const usrc = it->yuv_out_ + U_OFF;
- const uint8_t* const vsrc = it->yuv_out_ + V_OFF;
- const WebPPicture* const pic = enc->pic_;
- uint8_t* const ydst = pic->y + (y * pic->y_stride + x) * 16;
- uint8_t* const udst = pic->u + (y * pic->uv_stride + x) * 8;
- uint8_t* const vdst = pic->v + (y * pic->uv_stride + x) * 8;
- int w = (pic->width - x * 16);
- int h = (pic->height - y * 16);
-
- if (w > 16) w = 16;
- if (h > 16) h = 16;
-
- // Luma plane
- ExportBlock(ysrc, ydst, pic->y_stride, w, h);
-
- { // U/V planes
- const int uv_w = (w + 1) >> 1;
- const int uv_h = (h + 1) >> 1;
- ExportBlock(usrc, udst, pic->uv_stride, uv_w, uv_h);
- ExportBlock(vsrc, vdst, pic->uv_stride, uv_w, uv_h);
- }
- }
-}
-
-//------------------------------------------------------------------------------
-// Non-zero contexts setup/teardown
-
-// Nz bits:
-// 0 1 2 3 Y
-// 4 5 6 7
-// 8 9 10 11
-// 12 13 14 15
-// 16 17 U
-// 18 19
-// 20 21 V
-// 22 23
-// 24 DC-intra16
-
-// Convert packed context to byte array
-#define BIT(nz, n) (!!((nz) & (1 << (n))))
-
-void VP8IteratorNzToBytes(VP8EncIterator* const it) {
- const int tnz = it->nz_[0], lnz = it->nz_[-1];
- int* const top_nz = it->top_nz_;
- int* const left_nz = it->left_nz_;
-
- // Top-Y
- top_nz[0] = BIT(tnz, 12);
- top_nz[1] = BIT(tnz, 13);
- top_nz[2] = BIT(tnz, 14);
- top_nz[3] = BIT(tnz, 15);
- // Top-U
- top_nz[4] = BIT(tnz, 18);
- top_nz[5] = BIT(tnz, 19);
- // Top-V
- top_nz[6] = BIT(tnz, 22);
- top_nz[7] = BIT(tnz, 23);
- // DC
- top_nz[8] = BIT(tnz, 24);
-
- // left-Y
- left_nz[0] = BIT(lnz, 3);
- left_nz[1] = BIT(lnz, 7);
- left_nz[2] = BIT(lnz, 11);
- left_nz[3] = BIT(lnz, 15);
- // left-U
- left_nz[4] = BIT(lnz, 17);
- left_nz[5] = BIT(lnz, 19);
- // left-V
- left_nz[6] = BIT(lnz, 21);
- left_nz[7] = BIT(lnz, 23);
- // left-DC is special, iterated separately
-}
-
-void VP8IteratorBytesToNz(VP8EncIterator* const it) {
- uint32_t nz = 0;
- const int* const top_nz = it->top_nz_;
- const int* const left_nz = it->left_nz_;
- // top
- nz |= (top_nz[0] << 12) | (top_nz[1] << 13);
- nz |= (top_nz[2] << 14) | (top_nz[3] << 15);
- nz |= (top_nz[4] << 18) | (top_nz[5] << 19);
- nz |= (top_nz[6] << 22) | (top_nz[7] << 23);
- nz |= (top_nz[8] << 24); // we propagate the _top_ bit, esp. for intra4
- // left
- nz |= (left_nz[0] << 3) | (left_nz[1] << 7);
- nz |= (left_nz[2] << 11);
- nz |= (left_nz[4] << 17) | (left_nz[6] << 21);
-
- *it->nz_ = nz;
-}
-
-#undef BIT
-
-//------------------------------------------------------------------------------
-// Advance to the next position, doing the bookkeeping.
-
-void VP8IteratorSaveBoundary(VP8EncIterator* const it) {
- VP8Encoder* const enc = it->enc_;
- const int x = it->x_, y = it->y_;
- const uint8_t* const ysrc = it->yuv_out_ + Y_OFF;
- const uint8_t* const uvsrc = it->yuv_out_ + U_OFF;
- if (x < enc->mb_w_ - 1) { // left
- int i;
- for (i = 0; i < 16; ++i) {
- it->y_left_[i] = ysrc[15 + i * BPS];
- }
- for (i = 0; i < 8; ++i) {
- it->u_left_[i] = uvsrc[7 + i * BPS];
- it->v_left_[i] = uvsrc[15 + i * BPS];
- }
- // top-left (before 'top'!)
- it->y_left_[-1] = it->y_top_[15];
- it->u_left_[-1] = it->uv_top_[0 + 7];
- it->v_left_[-1] = it->uv_top_[8 + 7];
- }
- if (y < enc->mb_h_ - 1) { // top
- memcpy(it->y_top_, ysrc + 15 * BPS, 16);
- memcpy(it->uv_top_, uvsrc + 7 * BPS, 8 + 8);
- }
-}
-
-int VP8IteratorNext(VP8EncIterator* const it) {
- it->preds_ += 4;
- it->mb_ += 1;
- it->nz_ += 1;
- it->y_top_ += 16;
- it->uv_top_ += 16;
- it->x_ += 1;
- if (it->x_ == it->enc_->mb_w_) {
- VP8IteratorSetRow(it, ++it->y_);
- }
- return (0 < --it->count_down_);
-}
-
-//------------------------------------------------------------------------------
-// Helper function to set mode properties
-
-void VP8SetIntra16Mode(const VP8EncIterator* const it, int mode) {
- uint8_t* preds = it->preds_;
- int y;
- for (y = 0; y < 4; ++y) {
- memset(preds, mode, 4);
- preds += it->enc_->preds_w_;
- }
- it->mb_->type_ = 1;
-}
-
-void VP8SetIntra4Mode(const VP8EncIterator* const it, const uint8_t* modes) {
- uint8_t* preds = it->preds_;
- int y;
- for (y = 4; y > 0; --y) {
- memcpy(preds, modes, 4 * sizeof(*modes));
- preds += it->enc_->preds_w_;
- modes += 4;
- }
- it->mb_->type_ = 0;
-}
-
-void VP8SetIntraUVMode(const VP8EncIterator* const it, int mode) {
- it->mb_->uv_mode_ = mode;
-}
-
-void VP8SetSkip(const VP8EncIterator* const it, int skip) {
- it->mb_->skip_ = skip;
-}
-
-void VP8SetSegment(const VP8EncIterator* const it, int segment) {
- it->mb_->segment_ = segment;
-}
-
-//------------------------------------------------------------------------------
-// Intra4x4 sub-blocks iteration
-//
-// We store and update the boundary samples into an array of 37 pixels. They
-// are updated as we iterate and reconstructs each intra4x4 blocks in turn.
-// The position of the samples has the following snake pattern:
-//
-// 16|17 18 19 20|21 22 23 24|25 26 27 28|29 30 31 32|33 34 35 36 <- Top-right
-// --+-----------+-----------+-----------+-----------+
-// 15| 19| 23| 27| 31|
-// 14| 18| 22| 26| 30|
-// 13| 17| 21| 25| 29|
-// 12|13 14 15 16|17 18 19 20|21 22 23 24|25 26 27 28|
-// --+-----------+-----------+-----------+-----------+
-// 11| 15| 19| 23| 27|
-// 10| 14| 18| 22| 26|
-// 9| 13| 17| 21| 25|
-// 8| 9 10 11 12|13 14 15 16|17 18 19 20|21 22 23 24|
-// --+-----------+-----------+-----------+-----------+
-// 7| 11| 15| 19| 23|
-// 6| 10| 14| 18| 22|
-// 5| 9| 13| 17| 21|
-// 4| 5 6 7 8| 9 10 11 12|13 14 15 16|17 18 19 20|
-// --+-----------+-----------+-----------+-----------+
-// 3| 7| 11| 15| 19|
-// 2| 6| 10| 14| 18|
-// 1| 5| 9| 13| 17|
-// 0| 1 2 3 4| 5 6 7 8| 9 10 11 12|13 14 15 16|
-// --+-----------+-----------+-----------+-----------+
-
-// Array to record the position of the top sample to pass to the prediction
-// functions in dsp.c.
-static const uint8_t VP8TopLeftI4[16] = {
- 17, 21, 25, 29,
- 13, 17, 21, 25,
- 9, 13, 17, 21,
- 5, 9, 13, 17
-};
-
-void VP8IteratorStartI4(VP8EncIterator* const it) {
- const VP8Encoder* const enc = it->enc_;
- int i;
-
- it->i4_ = 0; // first 4x4 sub-block
- it->i4_top_ = it->i4_boundary_ + VP8TopLeftI4[0];
-
- // Import the boundary samples
- for (i = 0; i < 17; ++i) { // left
- it->i4_boundary_[i] = it->y_left_[15 - i];
- }
- for (i = 0; i < 16; ++i) { // top
- it->i4_boundary_[17 + i] = it->y_top_[i];
- }
- // top-right samples have a special case on the far right of the picture
- if (it->x_ < enc->mb_w_ - 1) {
- for (i = 16; i < 16 + 4; ++i) {
- it->i4_boundary_[17 + i] = it->y_top_[i];
- }
- } else { // else, replicate the last valid pixel four times
- for (i = 16; i < 16 + 4; ++i) {
- it->i4_boundary_[17 + i] = it->i4_boundary_[17 + 15];
- }
- }
- VP8IteratorNzToBytes(it); // import the non-zero context
-}
-
-int VP8IteratorRotateI4(VP8EncIterator* const it,
- const uint8_t* const yuv_out) {
- const uint8_t* const blk = yuv_out + VP8Scan[it->i4_];
- uint8_t* const top = it->i4_top_;
- int i;
-
- // Update the cache with 7 fresh samples
- for (i = 0; i <= 3; ++i) {
- top[-4 + i] = blk[i + 3 * BPS]; // store future top samples
- }
- if ((it->i4_ & 3) != 3) { // if not on the right sub-blocks #3, #7, #11, #15
- for (i = 0; i <= 2; ++i) { // store future left samples
- top[i] = blk[3 + (2 - i) * BPS];
- }
- } else { // else replicate top-right samples, as says the specs.
- for (i = 0; i <= 3; ++i) {
- top[i] = top[i + 4];
- }
- }
- // move pointers to next sub-block
- ++it->i4_;
- if (it->i4_ == 16) { // we're done
- return 0;
- }
-
- it->i4_top_ = it->i4_boundary_ + VP8TopLeftI4[it->i4_];
- return 1;
-}
-
-//------------------------------------------------------------------------------
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-30 18:06:54 +0000