diff options
Diffstat (limited to 'thirdparty/libwebp/enc/picture_csp.c')
| -rw-r--r-- | thirdparty/libwebp/enc/picture_csp.c | 200 |
1 files changed, 112 insertions, 88 deletions
diff --git a/thirdparty/libwebp/enc/picture_csp.c b/thirdparty/libwebp/enc/picture_csp.c index 607a6240b0..188a3ca55b 100644 --- a/thirdparty/libwebp/enc/picture_csp.c +++ b/thirdparty/libwebp/enc/picture_csp.c @@ -381,36 +381,42 @@ static WEBP_INLINE uint8_t ConvertRGBToV(int r, int g, int b) { return clip_8b(128 + (v >> (YUV_FIX + SFIX))); } -static int ConvertWRGBToYUV(const fixed_y_t* const best_y, - const fixed_t* const best_uv, +static int ConvertWRGBToYUV(const fixed_y_t* best_y, const fixed_t* best_uv, WebPPicture* const picture) { int i, j; + uint8_t* dst_y = picture->y; + uint8_t* dst_u = picture->u; + uint8_t* dst_v = picture->v; + const fixed_t* const best_uv_base = best_uv; const int w = (picture->width + 1) & ~1; const int h = (picture->height + 1) & ~1; const int uv_w = w >> 1; const int uv_h = h >> 1; - for (j = 0; j < picture->height; ++j) { + for (best_uv = best_uv_base, j = 0; j < picture->height; ++j) { for (i = 0; i < picture->width; ++i) { - const int off = 3 * ((i >> 1) + (j >> 1) * uv_w); - const int off2 = i + j * picture->y_stride; - const int W = best_y[i + j * w]; + const int off = 3 * (i >> 1); + const int W = best_y[i]; const int r = best_uv[off + 0] + W; const int g = best_uv[off + 1] + W; const int b = best_uv[off + 2] + W; - picture->y[off2] = ConvertRGBToY(r, g, b); + dst_y[i] = ConvertRGBToY(r, g, b); } + best_y += w; + best_uv += (j & 1) * 3 * uv_w; + dst_y += picture->y_stride; } - for (j = 0; j < uv_h; ++j) { - uint8_t* const dst_u = picture->u + j * picture->uv_stride; - uint8_t* const dst_v = picture->v + j * picture->uv_stride; + for (best_uv = best_uv_base, j = 0; j < uv_h; ++j) { for (i = 0; i < uv_w; ++i) { - const int off = 3 * (i + j * uv_w); + const int off = 3 * i; const int r = best_uv[off + 0]; const int g = best_uv[off + 1]; const int b = best_uv[off + 2]; dst_u[i] = ConvertRGBToU(r, g, b); dst_v[i] = ConvertRGBToV(r, g, b); } + best_uv += 3 * uv_w; + dst_u += picture->uv_stride; + dst_v += picture->uv_stride; } return 1; } @@ -420,9 +426,9 @@ static int ConvertWRGBToYUV(const fixed_y_t* const best_y, #define SAFE_ALLOC(W, H, T) ((T*)WebPSafeMalloc((W) * (H), sizeof(T))) -static int PreprocessARGB(const uint8_t* const r_ptr, - const uint8_t* const g_ptr, - const uint8_t* const b_ptr, +static int PreprocessARGB(const uint8_t* r_ptr, + const uint8_t* g_ptr, + const uint8_t* b_ptr, int step, int rgb_stride, WebPPicture* const picture) { // we expand the right/bottom border if needed @@ -435,20 +441,24 @@ static int PreprocessARGB(const uint8_t* const r_ptr, // TODO(skal): allocate one big memory chunk. But for now, it's easier // for valgrind debugging to have several chunks. fixed_y_t* const tmp_buffer = SAFE_ALLOC(w * 3, 2, fixed_y_t); // scratch - fixed_y_t* const best_y = SAFE_ALLOC(w, h, fixed_y_t); - fixed_y_t* const target_y = SAFE_ALLOC(w, h, fixed_y_t); + fixed_y_t* const best_y_base = SAFE_ALLOC(w, h, fixed_y_t); + fixed_y_t* const target_y_base = SAFE_ALLOC(w, h, fixed_y_t); fixed_y_t* const best_rgb_y = SAFE_ALLOC(w, 2, fixed_y_t); - fixed_t* const best_uv = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t); - fixed_t* const target_uv = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t); + fixed_t* const best_uv_base = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t); + fixed_t* const target_uv_base = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t); fixed_t* const best_rgb_uv = SAFE_ALLOC(uv_w * 3, 1, fixed_t); + fixed_y_t* best_y = best_y_base; + fixed_y_t* target_y = target_y_base; + fixed_t* best_uv = best_uv_base; + fixed_t* target_uv = target_uv_base; int ok; int diff_sum = 0; const int first_diff_threshold = (int)(2.5 * w * h); const int min_improvement = 5; // stop if improvement is below this % const int min_first_improvement = 80; - if (best_y == NULL || best_uv == NULL || - target_y == NULL || target_uv == NULL || + if (best_y_base == NULL || best_uv_base == NULL || + target_y_base == NULL || target_uv_base == NULL || best_rgb_y == NULL || best_rgb_uv == NULL || tmp_buffer == NULL) { ok = WebPEncodingSetError(picture, VP8_ENC_ERROR_OUT_OF_MEMORY); @@ -462,41 +472,47 @@ static int PreprocessARGB(const uint8_t* const r_ptr, const int is_last_row = (j == picture->height - 1); fixed_y_t* const src1 = tmp_buffer; fixed_y_t* const src2 = tmp_buffer + 3 * w; - const int off1 = j * rgb_stride; - const int off2 = off1 + rgb_stride; - const int uv_off = (j >> 1) * 3 * uv_w; - fixed_y_t* const dst_y = best_y + j * w; // prepare two rows of input - ImportOneRow(r_ptr + off1, g_ptr + off1, b_ptr + off1, - step, picture->width, src1); + ImportOneRow(r_ptr, g_ptr, b_ptr, step, picture->width, src1); if (!is_last_row) { - ImportOneRow(r_ptr + off2, g_ptr + off2, b_ptr + off2, + ImportOneRow(r_ptr + rgb_stride, g_ptr + rgb_stride, b_ptr + rgb_stride, step, picture->width, src2); } else { memcpy(src2, src1, 3 * w * sizeof(*src2)); } - UpdateW(src1, target_y + (j + 0) * w, w); - UpdateW(src2, target_y + (j + 1) * w, w); - diff_sum += UpdateChroma(src1, src2, target_uv + uv_off, dst_y, uv_w); - memcpy(best_uv + uv_off, target_uv + uv_off, 3 * uv_w * sizeof(*best_uv)); - memcpy(dst_y + w, dst_y, w * sizeof(*dst_y)); + UpdateW(src1, target_y, w); + UpdateW(src2, target_y + w, w); + diff_sum += UpdateChroma(src1, src2, target_uv, best_y, uv_w); + memcpy(best_uv, target_uv, 3 * uv_w * sizeof(*best_uv)); + memcpy(best_y + w, best_y, w * sizeof(*best_y)); + best_y += 2 * w; + best_uv += 3 * uv_w; + target_y += 2 * w; + target_uv += 3 * uv_w; + r_ptr += 2 * rgb_stride; + g_ptr += 2 * rgb_stride; + b_ptr += 2 * rgb_stride; } // Iterate and resolve clipping conflicts. for (iter = 0; iter < kNumIterations; ++iter) { int k; - const fixed_t* cur_uv = best_uv; - const fixed_t* prev_uv = best_uv; + const fixed_t* cur_uv = best_uv_base; + const fixed_t* prev_uv = best_uv_base; const int old_diff_sum = diff_sum; diff_sum = 0; + + best_y = best_y_base; + best_uv = best_uv_base; + target_y = target_y_base; + target_uv = target_uv_base; for (j = 0; j < h; j += 2) { fixed_y_t* const src1 = tmp_buffer; fixed_y_t* const src2 = tmp_buffer + 3 * w; { const fixed_t* const next_uv = cur_uv + ((j < h - 2) ? 3 * uv_w : 0); - InterpolateTwoRows(best_y + j * w, prev_uv, cur_uv, next_uv, - w, src1, src2); + InterpolateTwoRows(best_y, prev_uv, cur_uv, next_uv, w, src1, src2); prev_uv = cur_uv; cur_uv = next_uv; } @@ -507,16 +523,15 @@ static int PreprocessARGB(const uint8_t* const r_ptr, // update two rows of Y and one row of RGB for (i = 0; i < 2 * w; ++i) { - const int off = i + j * w; - const int diff_y = target_y[off] - best_rgb_y[i]; - const int new_y = (int)best_y[off] + diff_y; - best_y[off] = clip_y(new_y); + const int diff_y = target_y[i] - best_rgb_y[i]; + const int new_y = (int)best_y[i] + diff_y; + best_y[i] = clip_y(new_y); } for (i = 0; i < uv_w; ++i) { - const int off = 3 * (i + (j >> 1) * uv_w); + const int off = 3 * i; int W; for (k = 0; k <= 2; ++k) { - const int diff_uv = (int)target_uv[off + k] - best_rgb_uv[3 * i + k]; + const int diff_uv = (int)target_uv[off + k] - best_rgb_uv[off + k]; best_uv[off + k] += diff_uv; } W = RGBToGray(best_uv[off + 0], best_uv[off + 1], best_uv[off + 2]); @@ -524,6 +539,10 @@ static int PreprocessARGB(const uint8_t* const r_ptr, best_uv[off + k] -= W; } } + best_y += 2 * w; + best_uv += 3 * uv_w; + target_y += 2 * w; + target_uv += 3 * uv_w; } // test exit condition if (diff_sum > 0) { @@ -545,13 +564,13 @@ static int PreprocessARGB(const uint8_t* const r_ptr, } // final reconstruction - ok = ConvertWRGBToYUV(best_y, best_uv, picture); + ok = ConvertWRGBToYUV(best_y_base, best_uv_base, picture); End: - WebPSafeFree(best_y); - WebPSafeFree(best_uv); - WebPSafeFree(target_y); - WebPSafeFree(target_uv); + WebPSafeFree(best_y_base); + WebPSafeFree(best_uv_base); + WebPSafeFree(target_y_base); + WebPSafeFree(target_uv_base); WebPSafeFree(best_rgb_y); WebPSafeFree(best_rgb_uv); WebPSafeFree(tmp_buffer); @@ -830,10 +849,10 @@ static WEBP_INLINE void ConvertRowsToUV(const uint16_t* rgb, } } -static int ImportYUVAFromRGBA(const uint8_t* const r_ptr, - const uint8_t* const g_ptr, - const uint8_t* const b_ptr, - const uint8_t* const a_ptr, +static int ImportYUVAFromRGBA(const uint8_t* r_ptr, + const uint8_t* g_ptr, + const uint8_t* b_ptr, + const uint8_t* a_ptr, int step, // bytes per pixel int rgb_stride, // bytes per scanline float dithering, @@ -900,36 +919,34 @@ static int ImportYUVAFromRGBA(const uint8_t* const r_ptr, // Downsample Y/U/V planes, two rows at a time for (y = 0; y < (height >> 1); ++y) { int rows_have_alpha = has_alpha; - const int off1 = (2 * y + 0) * rgb_stride; - const int off2 = (2 * y + 1) * rgb_stride; if (use_dsp) { if (is_rgb) { - WebPConvertRGB24ToY(r_ptr + off1, dst_y, width); - WebPConvertRGB24ToY(r_ptr + off2, dst_y + picture->y_stride, width); + WebPConvertRGB24ToY(r_ptr, dst_y, width); + WebPConvertRGB24ToY(r_ptr + rgb_stride, + dst_y + picture->y_stride, width); } else { - WebPConvertBGR24ToY(b_ptr + off1, dst_y, width); - WebPConvertBGR24ToY(b_ptr + off2, dst_y + picture->y_stride, width); + WebPConvertBGR24ToY(b_ptr, dst_y, width); + WebPConvertBGR24ToY(b_ptr + rgb_stride, + dst_y + picture->y_stride, width); } } else { - ConvertRowToY(r_ptr + off1, g_ptr + off1, b_ptr + off1, step, - dst_y, width, rg); - ConvertRowToY(r_ptr + off2, g_ptr + off2, b_ptr + off2, step, + ConvertRowToY(r_ptr, g_ptr, b_ptr, step, dst_y, width, rg); + ConvertRowToY(r_ptr + rgb_stride, + g_ptr + rgb_stride, + b_ptr + rgb_stride, step, dst_y + picture->y_stride, width, rg); } dst_y += 2 * picture->y_stride; if (has_alpha) { - rows_have_alpha &= !WebPExtractAlpha(a_ptr + off1, rgb_stride, - width, 2, + rows_have_alpha &= !WebPExtractAlpha(a_ptr, rgb_stride, width, 2, dst_a, picture->a_stride); dst_a += 2 * picture->a_stride; } // Collect averaged R/G/B(/A) if (!rows_have_alpha) { - AccumulateRGB(r_ptr + off1, g_ptr + off1, b_ptr + off1, - step, rgb_stride, tmp_rgb, width); + AccumulateRGB(r_ptr, g_ptr, b_ptr, step, rgb_stride, tmp_rgb, width); } else { - AccumulateRGBA(r_ptr + off1, g_ptr + off1, b_ptr + off1, a_ptr + off1, - rgb_stride, tmp_rgb, width); + AccumulateRGBA(r_ptr, g_ptr, b_ptr, a_ptr, rgb_stride, tmp_rgb, width); } // Convert to U/V if (rg == NULL) { @@ -939,31 +956,33 @@ static int ImportYUVAFromRGBA(const uint8_t* const r_ptr, } dst_u += picture->uv_stride; dst_v += picture->uv_stride; + r_ptr += 2 * rgb_stride; + b_ptr += 2 * rgb_stride; + g_ptr += 2 * rgb_stride; + if (has_alpha) a_ptr += 2 * rgb_stride; } if (height & 1) { // extra last row - const int off = 2 * y * rgb_stride; int row_has_alpha = has_alpha; if (use_dsp) { if (r_ptr < b_ptr) { - WebPConvertRGB24ToY(r_ptr + off, dst_y, width); + WebPConvertRGB24ToY(r_ptr, dst_y, width); } else { - WebPConvertBGR24ToY(b_ptr + off, dst_y, width); + WebPConvertBGR24ToY(b_ptr, dst_y, width); } } else { - ConvertRowToY(r_ptr + off, g_ptr + off, b_ptr + off, step, - dst_y, width, rg); + ConvertRowToY(r_ptr, g_ptr, b_ptr, step, dst_y, width, rg); } if (row_has_alpha) { - row_has_alpha &= !WebPExtractAlpha(a_ptr + off, 0, width, 1, dst_a, 0); + row_has_alpha &= !WebPExtractAlpha(a_ptr, 0, width, 1, dst_a, 0); } // Collect averaged R/G/B(/A) if (!row_has_alpha) { // Collect averaged R/G/B - AccumulateRGB(r_ptr + off, g_ptr + off, b_ptr + off, - step, /* rgb_stride = */ 0, tmp_rgb, width); + AccumulateRGB(r_ptr, g_ptr, b_ptr, step, /* rgb_stride = */ 0, + tmp_rgb, width); } else { - AccumulateRGBA(r_ptr + off, g_ptr + off, b_ptr + off, a_ptr + off, - /* rgb_stride = */ 0, tmp_rgb, width); + AccumulateRGBA(r_ptr, g_ptr, b_ptr, a_ptr, /* rgb_stride = */ 0, + tmp_rgb, width); } if (rg == NULL) { WebPConvertRGBA32ToUV(tmp_rgb, dst_u, dst_v, uv_width); @@ -1086,10 +1105,10 @@ static int Import(WebPPicture* const picture, const uint8_t* const rgb, int rgb_stride, int step, int swap_rb, int import_alpha) { int y; - const uint8_t* const r_ptr = rgb + (swap_rb ? 2 : 0); - const uint8_t* const g_ptr = rgb + 1; - const uint8_t* const b_ptr = rgb + (swap_rb ? 0 : 2); - const uint8_t* const a_ptr = import_alpha ? rgb + 3 : NULL; + const uint8_t* r_ptr = rgb + (swap_rb ? 2 : 0); + const uint8_t* g_ptr = rgb + 1; + const uint8_t* b_ptr = rgb + (swap_rb ? 0 : 2); + const uint8_t* a_ptr = import_alpha ? rgb + 3 : NULL; const int width = picture->width; const int height = picture->height; @@ -1102,20 +1121,25 @@ static int Import(WebPPicture* const picture, VP8EncDspARGBInit(); if (import_alpha) { + uint32_t* dst = picture->argb; assert(step == 4); for (y = 0; y < height; ++y) { - uint32_t* const dst = &picture->argb[y * picture->argb_stride]; - const int offset = y * rgb_stride; - VP8PackARGB(a_ptr + offset, r_ptr + offset, g_ptr + offset, - b_ptr + offset, width, dst); + VP8PackARGB(a_ptr, r_ptr, g_ptr, b_ptr, width, dst); + a_ptr += rgb_stride; + r_ptr += rgb_stride; + g_ptr += rgb_stride; + b_ptr += rgb_stride; + dst += picture->argb_stride; } } else { + uint32_t* dst = picture->argb; assert(step >= 3); for (y = 0; y < height; ++y) { - uint32_t* const dst = &picture->argb[y * picture->argb_stride]; - const int offset = y * rgb_stride; - VP8PackRGB(r_ptr + offset, g_ptr + offset, b_ptr + offset, - width, step, dst); + VP8PackRGB(r_ptr, g_ptr, b_ptr, width, step, dst); + r_ptr += rgb_stride; + g_ptr += rgb_stride; + b_ptr += rgb_stride; + dst += picture->argb_stride; } } return 1; |