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#include "YuvBufferT.h"
#include <android/log.h>
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, "YuvBufferT", __VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, "YuvBufferT", __VA_ARGS__)
YuvBufferT::YuvBufferT(uint8_t *lumaPointer,
int32_t lumaWidth, int32_t lumaHeight,
int32_t lumaElementStrideBytes, int32_t lumaRowStrideBytes,
uint8_t *chromaUPointer,
int32_t chromaUWidth, int32_t chromaUHeight,
int32_t chromaUElementStrideBytes, int32_t chromaURowStrideBytes,
uint8_t *chromaVPointer,
int32_t chromaVWidth, int32_t chromaVHeight,
int32_t chromaVElementStrideBytes, int32_t chromaVRowStrideBytes) {
assert(lumaPointer != nullptr);
assert(chromaUPointer != nullptr);
assert(chromaVPointer != nullptr);
halide_dimension_t lumaShape[] = {
{0, lumaWidth, lumaElementStrideBytes},
{0, lumaHeight, lumaRowStrideBytes}};
luma_ = Halide::Runtime::Buffer<uint8_t>(lumaPointer, 2, lumaShape);
halide_dimension_t chromaUShape[] = {
{0, chromaUWidth, chromaUElementStrideBytes},
{0, chromaUHeight, chromaURowStrideBytes}};
chromaU_ = Halide::Runtime::Buffer<uint8_t>(chromaUPointer, 2, chromaUShape);
halide_dimension_t chromaVShape[] = {
{0, chromaVWidth, chromaVElementStrideBytes},
{0, chromaVHeight, chromaVRowStrideBytes}};
chromaV_ = Halide::Runtime::Buffer<uint8_t>(chromaVPointer, 2, chromaVShape);
// See if chroma is stored according to a well known format.
chromaStorage_ = ChromaStorage::kOther;
// U and V must have the same extents and strides.
if (chromaU_.width() == chromaV_.width() &&
chromaU_.height() == chromaV_.height() &&
chromaU_.dim(0).stride() == chromaV_.dim(0).stride() &&
chromaU_.dim(1).stride() == chromaV_.dim(1).stride()) {
// If strides are exactly 2, check if they are interleaved.
if (chromaU_.dim(0).stride() == 2 &&
chromaV_.dim(0).stride() == 2) {
if (chromaU_.data() == chromaV_.data() - 1) {
chromaStorage_ = ChromaStorage::kInterleavedUFirst;
} else if (chromaV_.data() == chromaU_.data() - 1) {
chromaStorage_ = ChromaStorage::kInterleavedVFirst;
}
} else if (chromaU_.dim(0).stride() == 1 &&
chromaV_.dim(0).stride() == 1) {
// If element stride is 1, then they're planar.
// If there is no space at the end of each row, they might be packed.
// Check if one directly follows the other.
if (chromaU_.width() == chromaU_.dim(1).stride() &&
chromaV_.width() == chromaV_.dim(1).stride()) {
if (&chromaU_(0, chromaU_.height()) == &chromaV_(0, 0)) {
chromaStorage_ = ChromaStorage::kPlanarPackedUFirst;
} else if (&chromaV_(0, chromaU_.height()) == &chromaU_(0, 0)) {
chromaStorage_ = ChromaStorage::kPlanarPackedVFirst;
}
} else {
chromaStorage_ = ChromaStorage::kPlanarGeneric;
}
}
}
interleavedChromaView_ = Halide::Runtime::Buffer<uint8_t>();
if (chromaStorage_ == ChromaStorage::kInterleavedUFirst) {
halide_dimension_t chromaShape[] = {
{0, chromaUWidth * 2, 1},
{0, chromaUHeight, chromaURowStrideBytes}};
interleavedChromaView_ = Halide::Runtime::Buffer<uint8_t>(chromaUPointer, 2, chromaShape);
} else if (chromaStorage_ == ChromaStorage::kInterleavedVFirst) {
halide_dimension_t chromaShape[] = {
{0, chromaVWidth * 2, 1},
{0, chromaVHeight, chromaVRowStrideBytes}};
interleavedChromaView_ = Halide::Runtime::Buffer<uint8_t>(chromaVPointer, 2, chromaShape);
} else if (chromaStorage_ == ChromaStorage::kPlanarPackedUFirst) {
packedPlanarChromaView_ = chromaU_;
packedPlanarChromaView_.crop(1, 0, chromaUHeight * 2);
} else if (chromaStorage_ == ChromaStorage::kPlanarPackedVFirst) {
packedPlanarChromaView_ = chromaV_;
packedPlanarChromaView_.crop(1, 0, chromaVHeight * 2);
}
interleavedChromaView_.set_host_dirty();
packedPlanarChromaView_.set_host_dirty();
chromaU_.set_host_dirty();
chromaV_.set_host_dirty();
luma_.set_host_dirty();
}
bool YuvBufferT::isNull() const {
return luma_.data() == nullptr;
}
Halide::Runtime::Buffer<uint8_t> YuvBufferT::luma() const {
return luma_;
}
Halide::Runtime::Buffer<uint8_t> YuvBufferT::chromaU() const {
return chromaU_;
}
Halide::Runtime::Buffer<uint8_t> YuvBufferT::chromaV() const {
return chromaV_;
}
YuvBufferT::ChromaStorage YuvBufferT::chromaStorage() const {
return chromaStorage_;
}
Halide::Runtime::Buffer<uint8_t> YuvBufferT::interleavedChromaView() const {
return interleavedChromaView_;
}
Halide::Runtime::Buffer<uint8_t> YuvBufferT::packedPlanarChromaView() const {
return packedPlanarChromaView_;
}
void YuvBufferT::copy_from(const YuvBufferT &other) {
luma_.copy_from(other.luma_);
if (interleavedChromaView_.data() &&
other.interleavedChromaView_.data()) {
interleavedChromaView_.copy_from(other.interleavedChromaView_);
} else if (packedPlanarChromaView_.data() &&
other.packedPlanarChromaView_.data()) {
packedPlanarChromaView_.copy_from(other.packedPlanarChromaView_);
} else {
chromaU_.copy_from(other.chromaU_);
chromaV_.copy_from(other.chromaV_);
}
}
void YuvBufferT::fill(uint8_t y, uint8_t u, uint8_t v) {
luma_.fill(y);
fillUV(u, v);
}
void YuvBufferT::fillUV(uint8_t u, uint8_t v) {
if (interleavedChromaView_.data() && u == v) {
interleavedChromaView_.fill(u);
} else if (packedPlanarChromaView_.data() && u == v) {
packedPlanarChromaView_.fill(v);
} else {
chromaU_.fill(u);
chromaV_.fill(v);
}
}
namespace {
Halide::Runtime::Buffer<uint8_t> rotateBuffer180(Halide::Runtime::Buffer<uint8_t> buf) {
if (buf.data() == nullptr) return buf;
halide_dimension_t shape[] = {
{0, buf.dim(0).extent(), -buf.dim(0).stride()},
{0, buf.dim(1).extent(), -buf.dim(1).stride()},
};
return Halide::Runtime::Buffer<uint8_t>(&buf(buf.width() - 1, buf.height() - 1), 2, shape);
}
}; // namespace
void YuvBufferT::rotate180() {
luma_ = rotateBuffer180(luma_);
chromaU_ = rotateBuffer180(chromaU_);
chromaV_ = rotateBuffer180(chromaV_);
packedPlanarChromaView_ = rotateBuffer180(packedPlanarChromaView_);
interleavedChromaView_ = rotateBuffer180(interleavedChromaView_);
// Rotating the above two views effectively swaps U and V.
switch (chromaStorage_) {
case ChromaStorage::kPlanarPackedUFirst:
chromaStorage_ = ChromaStorage::kPlanarPackedVFirst;
break;
case ChromaStorage::kPlanarPackedVFirst:
chromaStorage_ = ChromaStorage::kPlanarPackedUFirst;
break;
case ChromaStorage::kInterleavedUFirst:
chromaStorage_ = ChromaStorage::kInterleavedVFirst;
break;
case ChromaStorage::kInterleavedVFirst:
chromaStorage_ = ChromaStorage::kInterleavedUFirst;
break;
default:
// nothing
break;
};
}
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