| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <media/stagefright/ColorConverter.h> |
| #include <media/stagefright/MediaDebug.h> |
| #include <media/stagefright/MediaErrors.h> |
| |
| namespace android { |
| |
| ColorConverter::ColorConverter( |
| OMX_COLOR_FORMATTYPE from, OMX_COLOR_FORMATTYPE to) |
| : mSrcFormat(from), |
| mDstFormat(to), |
| mClip(NULL) { |
| } |
| |
| ColorConverter::~ColorConverter() { |
| delete[] mClip; |
| mClip = NULL; |
| } |
| |
| bool ColorConverter::isValid() const { |
| if (mDstFormat != OMX_COLOR_Format16bitRGB565) { |
| return false; |
| } |
| |
| switch (mSrcFormat) { |
| case OMX_COLOR_FormatYUV420Planar: |
| case OMX_COLOR_FormatCbYCrY: |
| case OMX_QCOM_COLOR_FormatYVU420SemiPlanar: |
| case OMX_COLOR_FormatYUV420SemiPlanar: |
| case OMX_TI_COLOR_FormatYUV420PackedSemiPlanar: |
| return true; |
| |
| default: |
| return false; |
| } |
| } |
| |
| ColorConverter::BitmapParams::BitmapParams( |
| void *bits, |
| size_t width, size_t height, |
| size_t cropLeft, size_t cropTop, |
| size_t cropRight, size_t cropBottom) |
| : mBits(bits), |
| mWidth(width), |
| mHeight(height), |
| mCropLeft(cropLeft), |
| mCropTop(cropTop), |
| mCropRight(cropRight), |
| mCropBottom(cropBottom) { |
| } |
| |
| size_t ColorConverter::BitmapParams::cropWidth() const { |
| return mCropRight - mCropLeft + 1; |
| } |
| |
| size_t ColorConverter::BitmapParams::cropHeight() const { |
| return mCropBottom - mCropTop + 1; |
| } |
| |
| status_t ColorConverter::convert( |
| const void *srcBits, |
| size_t srcWidth, size_t srcHeight, |
| size_t srcCropLeft, size_t srcCropTop, |
| size_t srcCropRight, size_t srcCropBottom, |
| void *dstBits, |
| size_t dstWidth, size_t dstHeight, |
| size_t dstCropLeft, size_t dstCropTop, |
| size_t dstCropRight, size_t dstCropBottom) { |
| if (mDstFormat != OMX_COLOR_Format16bitRGB565) { |
| return ERROR_UNSUPPORTED; |
| } |
| |
| BitmapParams src( |
| const_cast<void *>(srcBits), |
| srcWidth, srcHeight, |
| srcCropLeft, srcCropTop, srcCropRight, srcCropBottom); |
| |
| BitmapParams dst( |
| dstBits, |
| dstWidth, dstHeight, |
| dstCropLeft, dstCropTop, dstCropRight, dstCropBottom); |
| |
| status_t err; |
| |
| switch (mSrcFormat) { |
| case OMX_COLOR_FormatYUV420Planar: |
| err = convertYUV420Planar(src, dst); |
| break; |
| |
| case OMX_COLOR_FormatCbYCrY: |
| err = convertCbYCrY(src, dst); |
| break; |
| |
| case OMX_QCOM_COLOR_FormatYVU420SemiPlanar: |
| err = convertQCOMYUV420SemiPlanar(src, dst); |
| break; |
| |
| case OMX_COLOR_FormatYUV420SemiPlanar: |
| err = convertYUV420SemiPlanar(src, dst); |
| break; |
| |
| case OMX_TI_COLOR_FormatYUV420PackedSemiPlanar: |
| err = convertTIYUV420PackedSemiPlanar(src, dst); |
| break; |
| |
| default: |
| { |
| CHECK(!"Should not be here. Unknown color conversion."); |
| break; |
| } |
| } |
| |
| return err; |
| } |
| |
| status_t ColorConverter::convertCbYCrY( |
| const BitmapParams &src, const BitmapParams &dst) { |
| // XXX Untested |
| |
| uint8_t *kAdjustedClip = initClip(); |
| |
| if (!((src.mCropLeft & 1) == 0 |
| && src.cropWidth() == dst.cropWidth() |
| && src.cropHeight() == dst.cropHeight())) { |
| return ERROR_UNSUPPORTED; |
| } |
| |
| uint32_t *dst_ptr = (uint32_t *)dst.mBits |
| + (dst.mCropTop * dst.mWidth + dst.mCropLeft) / 2; |
| |
| const uint8_t *src_ptr = (const uint8_t *)src.mBits |
| + (src.mCropTop * dst.mWidth + src.mCropLeft) * 2; |
| |
| for (size_t y = 0; y < src.cropHeight(); ++y) { |
| for (size_t x = 0; x < src.cropWidth(); x += 2) { |
| signed y1 = (signed)src_ptr[2 * x + 1] - 16; |
| signed y2 = (signed)src_ptr[2 * x + 3] - 16; |
| signed u = (signed)src_ptr[2 * x] - 128; |
| signed v = (signed)src_ptr[2 * x + 2] - 128; |
| |
| signed u_b = u * 517; |
| signed u_g = -u * 100; |
| signed v_g = -v * 208; |
| signed v_r = v * 409; |
| |
| signed tmp1 = y1 * 298; |
| signed b1 = (tmp1 + u_b) / 256; |
| signed g1 = (tmp1 + v_g + u_g) / 256; |
| signed r1 = (tmp1 + v_r) / 256; |
| |
| signed tmp2 = y2 * 298; |
| signed b2 = (tmp2 + u_b) / 256; |
| signed g2 = (tmp2 + v_g + u_g) / 256; |
| signed r2 = (tmp2 + v_r) / 256; |
| |
| uint32_t rgb1 = |
| ((kAdjustedClip[r1] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[b1] >> 3); |
| |
| uint32_t rgb2 = |
| ((kAdjustedClip[r2] >> 3) << 11) |
| | ((kAdjustedClip[g2] >> 2) << 5) |
| | (kAdjustedClip[b2] >> 3); |
| |
| dst_ptr[x / 2] = (rgb2 << 16) | rgb1; |
| } |
| |
| src_ptr += src.mWidth * 2; |
| dst_ptr += dst.mWidth / 2; |
| } |
| |
| return OK; |
| } |
| |
| status_t ColorConverter::convertYUV420Planar( |
| const BitmapParams &src, const BitmapParams &dst) { |
| if (!((src.mCropLeft & 1) == 0 |
| && src.cropWidth() == dst.cropWidth() |
| && src.cropHeight() == dst.cropHeight())) { |
| return ERROR_UNSUPPORTED; |
| } |
| |
| uint8_t *kAdjustedClip = initClip(); |
| |
| uint16_t *dst_ptr = (uint16_t *)dst.mBits |
| + dst.mCropTop * dst.mWidth + dst.mCropLeft; |
| |
| const uint8_t *src_y = |
| (const uint8_t *)src.mBits + src.mCropTop * src.mWidth + src.mCropLeft; |
| |
| const uint8_t *src_u = |
| (const uint8_t *)src_y + src.mWidth * src.mHeight |
| + src.mCropTop * (src.mWidth / 2) + src.mCropLeft / 2; |
| |
| const uint8_t *src_v = |
| src_u + (src.mWidth / 2) * (src.mHeight / 2); |
| |
| for (size_t y = 0; y < src.cropHeight(); ++y) { |
| for (size_t x = 0; x < src.cropWidth(); x += 2) { |
| // B = 1.164 * (Y - 16) + 2.018 * (U - 128) |
| // G = 1.164 * (Y - 16) - 0.813 * (V - 128) - 0.391 * (U - 128) |
| // R = 1.164 * (Y - 16) + 1.596 * (V - 128) |
| |
| // B = 298/256 * (Y - 16) + 517/256 * (U - 128) |
| // G = .................. - 208/256 * (V - 128) - 100/256 * (U - 128) |
| // R = .................. + 409/256 * (V - 128) |
| |
| // min_B = (298 * (- 16) + 517 * (- 128)) / 256 = -277 |
| // min_G = (298 * (- 16) - 208 * (255 - 128) - 100 * (255 - 128)) / 256 = -172 |
| // min_R = (298 * (- 16) + 409 * (- 128)) / 256 = -223 |
| |
| // max_B = (298 * (255 - 16) + 517 * (255 - 128)) / 256 = 534 |
| // max_G = (298 * (255 - 16) - 208 * (- 128) - 100 * (- 128)) / 256 = 432 |
| // max_R = (298 * (255 - 16) + 409 * (255 - 128)) / 256 = 481 |
| |
| // clip range -278 .. 535 |
| |
| signed y1 = (signed)src_y[x] - 16; |
| signed y2 = (signed)src_y[x + 1] - 16; |
| |
| signed u = (signed)src_u[x / 2] - 128; |
| signed v = (signed)src_v[x / 2] - 128; |
| |
| signed u_b = u * 517; |
| signed u_g = -u * 100; |
| signed v_g = -v * 208; |
| signed v_r = v * 409; |
| |
| signed tmp1 = y1 * 298; |
| signed b1 = (tmp1 + u_b) / 256; |
| signed g1 = (tmp1 + v_g + u_g) / 256; |
| signed r1 = (tmp1 + v_r) / 256; |
| |
| signed tmp2 = y2 * 298; |
| signed b2 = (tmp2 + u_b) / 256; |
| signed g2 = (tmp2 + v_g + u_g) / 256; |
| signed r2 = (tmp2 + v_r) / 256; |
| |
| uint32_t rgb1 = |
| ((kAdjustedClip[r1] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[b1] >> 3); |
| |
| uint32_t rgb2 = |
| ((kAdjustedClip[r2] >> 3) << 11) |
| | ((kAdjustedClip[g2] >> 2) << 5) |
| | (kAdjustedClip[b2] >> 3); |
| |
| if (x + 1 < src.cropWidth()) { |
| *(uint32_t *)(&dst_ptr[x]) = (rgb2 << 16) | rgb1; |
| } else { |
| dst_ptr[x] = rgb1; |
| } |
| } |
| |
| src_y += src.mWidth; |
| |
| if (y & 1) { |
| src_u += src.mWidth / 2; |
| src_v += src.mWidth / 2; |
| } |
| |
| dst_ptr += dst.mWidth; |
| } |
| |
| return OK; |
| } |
| |
| status_t ColorConverter::convertQCOMYUV420SemiPlanar( |
| const BitmapParams &src, const BitmapParams &dst) { |
| uint8_t *kAdjustedClip = initClip(); |
| |
| if (!((dst.mWidth & 3) == 0 |
| && (src.mCropLeft & 1) == 0 |
| && src.cropWidth() == dst.cropWidth() |
| && src.cropHeight() == dst.cropHeight())) { |
| return ERROR_UNSUPPORTED; |
| } |
| |
| uint32_t *dst_ptr = (uint32_t *)dst.mBits |
| + (dst.mCropTop * dst.mWidth + dst.mCropLeft) / 2; |
| |
| const uint8_t *src_y = |
| (const uint8_t *)src.mBits + src.mCropTop * src.mWidth + src.mCropLeft; |
| |
| const uint8_t *src_u = |
| (const uint8_t *)src_y + src.mWidth * src.mHeight |
| + src.mCropTop * src.mWidth + src.mCropLeft; |
| |
| for (size_t y = 0; y < src.cropHeight(); ++y) { |
| for (size_t x = 0; x < src.cropWidth(); x += 2) { |
| signed y1 = (signed)src_y[x] - 16; |
| signed y2 = (signed)src_y[x + 1] - 16; |
| |
| signed u = (signed)src_u[x & ~1] - 128; |
| signed v = (signed)src_u[(x & ~1) + 1] - 128; |
| |
| signed u_b = u * 517; |
| signed u_g = -u * 100; |
| signed v_g = -v * 208; |
| signed v_r = v * 409; |
| |
| signed tmp1 = y1 * 298; |
| signed b1 = (tmp1 + u_b) / 256; |
| signed g1 = (tmp1 + v_g + u_g) / 256; |
| signed r1 = (tmp1 + v_r) / 256; |
| |
| signed tmp2 = y2 * 298; |
| signed b2 = (tmp2 + u_b) / 256; |
| signed g2 = (tmp2 + v_g + u_g) / 256; |
| signed r2 = (tmp2 + v_r) / 256; |
| |
| uint32_t rgb1 = |
| ((kAdjustedClip[b1] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[r1] >> 3); |
| |
| uint32_t rgb2 = |
| ((kAdjustedClip[b2] >> 3) << 11) |
| | ((kAdjustedClip[g2] >> 2) << 5) |
| | (kAdjustedClip[r2] >> 3); |
| |
| dst_ptr[x / 2] = (rgb2 << 16) | rgb1; |
| } |
| |
| src_y += src.mWidth; |
| |
| if (y & 1) { |
| src_u += src.mWidth; |
| } |
| |
| dst_ptr += dst.mWidth / 2; |
| } |
| |
| return OK; |
| } |
| |
| status_t ColorConverter::convertYUV420SemiPlanar( |
| const BitmapParams &src, const BitmapParams &dst) { |
| // XXX Untested |
| |
| uint8_t *kAdjustedClip = initClip(); |
| |
| if (!((dst.mWidth & 3) == 0 |
| && (src.mCropLeft & 1) == 0 |
| && src.cropWidth() == dst.cropWidth() |
| && src.cropHeight() == dst.cropHeight())) { |
| return ERROR_UNSUPPORTED; |
| } |
| |
| uint32_t *dst_ptr = (uint32_t *)dst.mBits |
| + (dst.mCropTop * dst.mWidth + dst.mCropLeft) / 2; |
| |
| const uint8_t *src_y = |
| (const uint8_t *)src.mBits + src.mCropTop * src.mWidth + src.mCropLeft; |
| |
| const uint8_t *src_u = |
| (const uint8_t *)src_y + src.mWidth * src.mHeight |
| + src.mCropTop * src.mWidth + src.mCropLeft; |
| |
| for (size_t y = 0; y < src.cropHeight(); ++y) { |
| for (size_t x = 0; x < src.cropWidth(); x += 2) { |
| signed y1 = (signed)src_y[x] - 16; |
| signed y2 = (signed)src_y[x + 1] - 16; |
| |
| signed v = (signed)src_u[x & ~1] - 128; |
| signed u = (signed)src_u[(x & ~1) + 1] - 128; |
| |
| signed u_b = u * 517; |
| signed u_g = -u * 100; |
| signed v_g = -v * 208; |
| signed v_r = v * 409; |
| |
| signed tmp1 = y1 * 298; |
| signed b1 = (tmp1 + u_b) / 256; |
| signed g1 = (tmp1 + v_g + u_g) / 256; |
| signed r1 = (tmp1 + v_r) / 256; |
| |
| signed tmp2 = y2 * 298; |
| signed b2 = (tmp2 + u_b) / 256; |
| signed g2 = (tmp2 + v_g + u_g) / 256; |
| signed r2 = (tmp2 + v_r) / 256; |
| |
| uint32_t rgb1 = |
| ((kAdjustedClip[b1] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[r1] >> 3); |
| |
| uint32_t rgb2 = |
| ((kAdjustedClip[b2] >> 3) << 11) |
| | ((kAdjustedClip[g2] >> 2) << 5) |
| | (kAdjustedClip[r2] >> 3); |
| |
| dst_ptr[x / 2] = (rgb2 << 16) | rgb1; |
| } |
| |
| src_y += src.mWidth; |
| |
| if (y & 1) { |
| src_u += src.mWidth; |
| } |
| |
| dst_ptr += dst.mWidth / 2; |
| } |
| |
| return OK; |
| } |
| |
| status_t ColorConverter::convertTIYUV420PackedSemiPlanar( |
| const BitmapParams &src, const BitmapParams &dst) { |
| |
| /* |
| The TIYUV420PackedSemiPlanar format is same as YUV420PackedSemiPlanar but with |
| additional padding as shown in the diagram below. The padded width and padded |
| height is different for different compression formats and it is read from the |
| codec. In this color conversion routine, the padded resolution is obtained from |
| src bitmap. |
| |
| ------------------------------------ |
| | | |
| | | |
| | ------------------------- | |
| | | | | |
| | | | | |
| | | Y DATA | | |
| | | | | |
| | | | | |
| | | | | |
| | ------------------------- | |
| | | |
| | ------------ | |
| | | | | |
| | | | | |
| | | UV DATA | | |
| | | | | |
| | | | | |
| | | | | |
| | ------------ | |
| | | |
| | | |
| ------------------------------------ |
| */ |
| |
| LOGV("src.mCropLeft = %d src.mCropTop =%d src.mWidth = %d src.mHeight = %d" |
| " dst.mWidth = %d dst.mHeight = %d", src.mCropLeft , src.mCropTop, |
| src.mWidth, src.mHeight, dst.mWidth, dst.mHeight); |
| |
| size_t offset = (src.mWidth * src.mCropTop) + src.mCropLeft; |
| |
| uint8_t *kAdjustedClip = initClip(); |
| |
| uint32_t *dst_ptr = (uint32_t *)dst.mBits; |
| const uint8_t *src_y = (const uint8_t *)src.mBits; |
| const uint8_t *src_u = (const uint8_t *)(src_y-offset) + (src.mWidth * src.mHeight); |
| src_u += ( ( src.mWidth * (src.mCropTop/2) ) + src.mCropLeft ); |
| const uint8_t *src_v = src_u + 1; |
| |
| for (size_t y = 0; y < dst.mHeight; ++y) { |
| for (size_t x = 0; x < dst.mWidth; x += 2) { |
| |
| signed y1 = (signed)src_y[x] - 16; //Y pixel |
| signed y2 = (signed)src_y[x + 1] - 16; //2nd Y pixel |
| |
| signed u = (signed)src_u[x & ~1] - 128; //U component |
| signed v = (signed)src_u[(x & ~1) + 1] - 128; //V component |
| |
| signed u_b = u * 517; |
| signed u_g = -u * 100; |
| signed v_g = -v * 208; |
| signed v_r = v * 409; |
| |
| signed tmp1 = y1 * 298; |
| signed b1 = (tmp1 + u_b) / 256; |
| signed g1 = (tmp1 + v_g + u_g) / 256; |
| signed r1 = (tmp1 + v_r) / 256; |
| |
| signed tmp2 = y2 * 298; |
| signed b2 = (tmp2 + u_b) / 256; |
| signed g2 = (tmp2 + v_g + u_g) / 256; |
| signed r2 = (tmp2 + v_r) / 256; |
| |
| uint32_t rgb1 = |
| ((kAdjustedClip[r1] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[b1] >> 3); |
| |
| uint32_t rgb2 = |
| ((kAdjustedClip[r2] >> 3) << 11) |
| | ((kAdjustedClip[g1] >> 2) << 5) |
| | (kAdjustedClip[b1] >> 3); |
| |
| dst_ptr[x / 2] = (rgb2 << 16) | rgb1; |
| } |
| |
| src_y += src.mWidth; //increment Y-pixel line |
| if (y&1) { |
| src_u += src.mWidth; //increment U-V line |
| } |
| |
| dst_ptr += dst.mWidth / 2; |
| } |
| return OK; |
| } |
| |
| uint8_t *ColorConverter::initClip() { |
| static const signed kClipMin = -278; |
| static const signed kClipMax = 535; |
| |
| if (mClip == NULL) { |
| mClip = new uint8_t[kClipMax - kClipMin + 1]; |
| |
| for (signed i = kClipMin; i <= kClipMax; ++i) { |
| mClip[i - kClipMin] = (i < 0) ? 0 : (i > 255) ? 255 : (uint8_t)i; |
| } |
| } |
| |
| return &mClip[-kClipMin]; |
| } |
| |
| } // namespace android |