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/*
* Copyright (C) 2011 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 <II420ColorConverter.h>
#include <OMX_IVCommon.h>
#include <string.h>
static int getDecoderOutputFormat() {
return OMX_TI_COLOR_FormatYUV420PackedSemiPlanar;
}
static int convertDecoderOutputToI420(
void* srcBits, int srcWidth, int srcHeight, ARect srcRect, void* dstBits) {
const uint8_t *pSrc_y = (const uint8_t *)srcBits +
srcWidth * srcRect.top + srcRect.left;
const uint8_t *pSrc_uv = (const uint8_t *)pSrc_y +
srcWidth * (srcHeight - srcRect.top / 2);
int dstWidth = srcRect.right - srcRect.left + 1;
int dstHeight = srcRect.bottom - srcRect.top + 1;
size_t dst_y_size = dstWidth * dstHeight;
size_t dst_uv_stride = dstWidth / 2;
size_t dst_uv_size = dstWidth / 2 * dstHeight / 2;
uint8_t *pDst_y = (uint8_t *)dstBits;
uint8_t *pDst_u = pDst_y + dst_y_size;
uint8_t *pDst_v = pDst_u + dst_uv_size;
for (int y = 0; y < dstHeight; ++y) {
memcpy(pDst_y, pSrc_y, dstWidth);
pSrc_y += srcWidth;
pDst_y += dstWidth;
}
size_t tmp = (dstWidth + 1) / 2;
for (int y = 0; y < (dstHeight + 1) / 2; ++y) {
for (size_t x = 0; x < tmp; ++x) {
pDst_u[x] = pSrc_uv[2 * x];
pDst_v[x] = pSrc_uv[2 * x + 1];
}
pSrc_uv += srcWidth;
pDst_u += dst_uv_stride;
pDst_v += dst_uv_stride;
}
return 0;
}
static int getEncoderInputFormat() {
return OMX_TI_COLOR_FormatYUV420PackedSemiPlanar;
}
static int convertI420ToEncoderInput(
void* srcBits, int srcWidth, int srcHeight,
int dstWidth, int dstHeight, ARect dstRect,
void* dstBits) {
uint8_t *pSrc_y = (uint8_t*) srcBits;
uint8_t *pDst_y = (uint8_t*) dstBits;
for(int i=0; i < srcHeight; i++) {
memcpy(pDst_y, pSrc_y, srcWidth);
pSrc_y += srcWidth;
pDst_y += dstWidth;
}
uint8_t* pSrc_u = (uint8_t*)srcBits + (srcWidth * srcHeight);
uint8_t* pSrc_v = (uint8_t*)pSrc_u + (srcWidth / 2) * (srcHeight / 2);
uint8_t* pDst_uv = (uint8_t*)dstBits + dstWidth * dstHeight;
for(int i=0; i < srcHeight / 2; i++) {
for(int j=0, k=0; j < srcWidth / 2; j++, k+=2) {
pDst_uv[k] = pSrc_u[j];
pDst_uv[k+1] = pSrc_v[j];
}
pDst_uv += dstWidth;
pSrc_u += srcWidth / 2;
pSrc_v += srcWidth / 2;
}
return 0;
}
static int getEncoderInputBufferInfo(
int actualWidth, int actualHeight,
int* encoderWidth, int* encoderHeight,
ARect* encoderRect, int* encoderBufferSize) {
*encoderWidth = actualWidth;
*encoderHeight = actualHeight;
encoderRect->left = 0;
encoderRect->top = 0;
encoderRect->right = actualWidth - 1;
encoderRect->bottom = actualHeight - 1;
*encoderBufferSize = (actualWidth * actualHeight * 3 / 2);
return 0;
}
extern "C" void getI420ColorConverter(II420ColorConverter *converter) {
converter->getDecoderOutputFormat = getDecoderOutputFormat;
converter->convertDecoderOutputToI420 = convertDecoderOutputToI420;
converter->getEncoderInputFormat = getEncoderInputFormat;
converter->convertI420ToEncoderInput = convertI420ToEncoderInput;
converter->getEncoderInputBufferInfo = getEncoderInputBufferInfo;
}
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