diff options
Diffstat (limited to 'camera/CameraHalCommon.cpp')
| -rw-r--r-- | camera/CameraHalCommon.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/camera/CameraHalCommon.cpp b/camera/CameraHalCommon.cpp new file mode 100644 index 0000000..ce01528 --- /dev/null +++ b/camera/CameraHalCommon.cpp @@ -0,0 +1,233 @@ +/* + * Copyright (C) Texas Instruments - http://www.ti.com/ + * + * 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 "CameraHal.h" + +namespace Ti { +namespace Camera { + +const char CameraHal::PARAMS_DELIMITER []= ","; + +#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS + +struct timeval CameraHal::ppm_start; + +#endif + +#if PPM_INSTRUMENTATION + +/** + @brief PPM instrumentation + + Dumps the current time offset. The time reference point + lies within the CameraHAL constructor. + + @param str - log message + @return none + + */ +void CameraHal::PPM(const char* str){ + struct timeval ppm; + + gettimeofday(&ppm, NULL); + ppm.tv_sec = ppm.tv_sec - ppm_start.tv_sec; + ppm.tv_sec = ppm.tv_sec * 1000000; + ppm.tv_sec = ppm.tv_sec + ppm.tv_usec - ppm_start.tv_usec; + + CAMHAL_LOGI("PPM: %s :%ld.%ld ms", str, ( ppm.tv_sec /1000 ), ( ppm.tv_sec % 1000 )); +} + +#elif PPM_INSTRUMENTATION_ABS + +/** + @brief PPM instrumentation + + Dumps the current time offset. The time reference point + lies within the CameraHAL constructor. This implemetation + will also dump the abosolute timestamp, which is useful when + post calculation is done with data coming from the upper + layers (Camera application etc.) + + @param str - log message + @return none + + */ +void CameraHal::PPM(const char* str){ + struct timeval ppm; + + unsigned long long elapsed, absolute; + gettimeofday(&ppm, NULL); + elapsed = ppm.tv_sec - ppm_start.tv_sec; + elapsed *= 1000000; + elapsed += ppm.tv_usec - ppm_start.tv_usec; + absolute = ppm.tv_sec; + absolute *= 1000; + absolute += ppm.tv_usec /1000; + + CAMHAL_LOGI("PPM: %s :%llu.%llu ms : %llu ms", str, ( elapsed /1000 ), ( elapsed % 1000 ), absolute); +} + +#endif + +#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS + +/** + @brief PPM instrumentation + + Calculates and dumps the elapsed time using 'ppm_first' as + reference. + + @param str - log message + @return none + + */ +void CameraHal::PPM(const char* str, struct timeval* ppm_first, ...){ + char temp_str[256]; + struct timeval ppm; + unsigned long long absolute; + va_list args; + + va_start(args, ppm_first); + vsprintf(temp_str, str, args); + gettimeofday(&ppm, NULL); + absolute = ppm.tv_sec; + absolute *= 1000; + absolute += ppm.tv_usec /1000; + ppm.tv_sec = ppm.tv_sec - ppm_first->tv_sec; + ppm.tv_sec = ppm.tv_sec * 1000000; + ppm.tv_sec = ppm.tv_sec + ppm.tv_usec - ppm_first->tv_usec; + + CAMHAL_LOGI("PPM: %s :%ld.%ld ms : %llu ms", temp_str, ( ppm.tv_sec /1000 ), ( ppm.tv_sec % 1000 ), absolute); + + va_end(args); +} + +#endif + + +/** Common utility function definitions used all over the HAL */ + +unsigned int CameraHal::getBPP(const char* format) { + unsigned int bytesPerPixel; + + // Calculate bytes per pixel based on the pixel format + if (strcmp(format, android::CameraParameters::PIXEL_FORMAT_YUV422I) == 0) { + bytesPerPixel = 2; + } else if (strcmp(format, android::CameraParameters::PIXEL_FORMAT_RGB565) == 0 || + strcmp(format, android::CameraParameters::PIXEL_FORMAT_BAYER_RGGB) == 0) { + bytesPerPixel = 2; + } else if (strcmp(format, android::CameraParameters::PIXEL_FORMAT_YUV420SP) == 0) { + bytesPerPixel = 1; + } else { + bytesPerPixel = 1; + } + + return bytesPerPixel; +} + +void CameraHal::getXYFromOffset(unsigned int *x, unsigned int *y, + unsigned int offset, unsigned int stride, + const char* format) +{ + CAMHAL_ASSERT( x && y && format && (0U < stride) ); + + *x = (offset % stride) / getBPP(format); + *y = (offset / stride); +} + +const char* CameraHal::getPixelFormatConstant(const char* parametersFormat) +{ + const char *pixelFormat = NULL; + + if ( NULL != parametersFormat ) { + if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_YUV422I) ) { + CAMHAL_LOGVA("CbYCrY format selected"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_YUV422I; + } else if ( (0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_YUV420SP)) || + (0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_YUV420P)) ) { + // TODO(XXX): We are treating YV12 the same as YUV420SP + CAMHAL_LOGVA("YUV420SP format selected"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_YUV420SP; + } else if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_RGB565) ) { + CAMHAL_LOGVA("RGB565 format selected"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_RGB565; + } else if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_BAYER_RGGB) ) { + CAMHAL_LOGVA("BAYER format selected"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_BAYER_RGGB; + } else if ( 0 == strcmp(parametersFormat, android::CameraParameters::PIXEL_FORMAT_JPEG) ) { + CAMHAL_LOGVA("JPEG format selected"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_JPEG; + } else { + CAMHAL_LOGEA("Invalid format, NV12 format selected as default"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_YUV420SP; + } + } else { + CAMHAL_LOGEA("Preview format is NULL, defaulting to NV12"); + pixelFormat = (const char *) android::CameraParameters::PIXEL_FORMAT_YUV420SP; + } + + return pixelFormat; +} + +size_t CameraHal::calculateBufferSize(const char* parametersFormat, int width, int height) +{ + int bufferSize = -1; + + if ( NULL != parametersFormat ) { + if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_YUV422I) ) { + bufferSize = width * height * 2; + } else if ( (0 == strcmp(parametersFormat, android::CameraParameters::PIXEL_FORMAT_YUV420SP)) || + (0 == strcmp(parametersFormat, android::CameraParameters::PIXEL_FORMAT_YUV420P)) ) { + bufferSize = width * height * 3 / 2; + } else if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_RGB565) ) { + bufferSize = width * height * 2; + } else if ( 0 == strcmp(parametersFormat, (const char *) android::CameraParameters::PIXEL_FORMAT_BAYER_RGGB) ) { + bufferSize = width * height * 2; + } else { + CAMHAL_LOGEA("Invalid format"); + bufferSize = 0; + } + } else { + CAMHAL_LOGEA("Preview format is NULL"); + bufferSize = 0; + } + + return bufferSize; +} + + +bool CameraHal::parsePair(const char *str, int *first, int *second, char delim) +{ + // Find the first integer. + char *end; + int w = (int)strtol(str, &end, 10); + // If a delimeter does not immediately follow, give up. + if (*end != delim) { + CAMHAL_LOGE("Cannot find delimeter (%c) in str=%s", delim, str); + return false; + } + + // Find the second integer, immediately after the delimeter. + int h = (int)strtol(end+1, &end, 10); + + *first = w; + *second = h; + + return true; +} + +} // namespace Camera +} // namespace Ti |