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-rw-r--r--libs/ultrahdr/gainmapmath.cpp149
-rw-r--r--libs/ultrahdr/icc.cpp96
-rw-r--r--libs/ultrahdr/include/ultrahdr/gainmapmath.h65
-rw-r--r--libs/ultrahdr/include/ultrahdr/icc.h25
-rw-r--r--libs/ultrahdr/include/ultrahdr/jpegdecoderhelper.h15
-rw-r--r--libs/ultrahdr/include/ultrahdr/jpegr.h44
-rw-r--r--libs/ultrahdr/jpegdecoderhelper.cpp52
-rw-r--r--libs/ultrahdr/jpegr.cpp228
-rw-r--r--libs/ultrahdr/tests/Android.bp5
-rw-r--r--libs/ultrahdr/tests/data/minnie-320x240-yuv-icc.jpgbin0 -> 37101 bytes
-rw-r--r--libs/ultrahdr/tests/gainmapmath_test.cpp229
-rw-r--r--libs/ultrahdr/tests/icchelper_test.cpp77
-rw-r--r--libs/ultrahdr/tests/jpegdecoderhelper_test.cpp58
13 files changed, 954 insertions, 89 deletions
diff --git a/libs/ultrahdr/gainmapmath.cpp b/libs/ultrahdr/gainmapmath.cpp
index 37c3cf3d3b..ee15363b69 100644
--- a/libs/ultrahdr/gainmapmath.cpp
+++ b/libs/ultrahdr/gainmapmath.cpp
@@ -119,34 +119,39 @@ static float clampPixelFloat(float value) {
return (value < 0.0f) ? 0.0f : (value > kMaxPixelFloat) ? kMaxPixelFloat : value;
}
-// See IEC 61966-2-1, Equation F.7.
+// See IEC 61966-2-1/Amd 1:2003, Equation F.7.
static const float kSrgbR = 0.2126f, kSrgbG = 0.7152f, kSrgbB = 0.0722f;
float srgbLuminance(Color e) {
return kSrgbR * e.r + kSrgbG * e.g + kSrgbB * e.b;
}
-// See ECMA TR/98, Section 7.
-static const float kSrgbRCr = 1.402f, kSrgbGCb = 0.34414f, kSrgbGCr = 0.71414f, kSrgbBCb = 1.772f;
+// See ITU-R BT.709-6, Section 3.
+// Uses the same coefficients for deriving luma signal as
+// IEC 61966-2-1/Amd 1:2003 states for luminance, so we reuse the luminance
+// function above.
+static const float kSrgbCb = 1.8556f, kSrgbCr = 1.5748f;
-Color srgbYuvToRgb(Color e_gamma) {
- return {{{ clampPixelFloat(e_gamma.y + kSrgbRCr * e_gamma.v),
- clampPixelFloat(e_gamma.y - kSrgbGCb * e_gamma.u - kSrgbGCr * e_gamma.v),
- clampPixelFloat(e_gamma.y + kSrgbBCb * e_gamma.u) }}};
+Color srgbRgbToYuv(Color e_gamma) {
+ float y_gamma = srgbLuminance(e_gamma);
+ return {{{ y_gamma,
+ (e_gamma.b - y_gamma) / kSrgbCb,
+ (e_gamma.r - y_gamma) / kSrgbCr }}};
}
-// See ECMA TR/98, Section 7.
-static const float kSrgbYR = 0.299f, kSrgbYG = 0.587f, kSrgbYB = 0.114f;
-static const float kSrgbUR = -0.1687f, kSrgbUG = -0.3313f, kSrgbUB = 0.5f;
-static const float kSrgbVR = 0.5f, kSrgbVG = -0.4187f, kSrgbVB = -0.0813f;
+// See ITU-R BT.709-6, Section 3.
+// Same derivation to BT.2100's YUV->RGB, below. Similar to srgbRgbToYuv, we
+// can reuse the luminance coefficients since they are the same.
+static const float kSrgbGCb = kSrgbB * kSrgbCb / kSrgbG;
+static const float kSrgbGCr = kSrgbR * kSrgbCr / kSrgbG;
-Color srgbRgbToYuv(Color e_gamma) {
- return {{{ kSrgbYR * e_gamma.r + kSrgbYG * e_gamma.g + kSrgbYB * e_gamma.b,
- kSrgbUR * e_gamma.r + kSrgbUG * e_gamma.g + kSrgbUB * e_gamma.b,
- kSrgbVR * e_gamma.r + kSrgbVG * e_gamma.g + kSrgbVB * e_gamma.b }}};
+Color srgbYuvToRgb(Color e_gamma) {
+ return {{{ clampPixelFloat(e_gamma.y + kSrgbCr * e_gamma.v),
+ clampPixelFloat(e_gamma.y - kSrgbGCb * e_gamma.u - kSrgbGCr * e_gamma.v),
+ clampPixelFloat(e_gamma.y + kSrgbCb * e_gamma.u) }}};
}
-// See IEC 61966-2-1, Equations F.5 and F.6.
+// See IEC 61966-2-1/Amd 1:2003, Equations F.5 and F.6.
float srgbInvOetf(float e_gamma) {
if (e_gamma <= 0.04045f) {
return e_gamma / 12.92f;
@@ -178,13 +183,38 @@ Color srgbInvOetfLUT(Color e_gamma) {
////////////////////////////////////////////////////////////////////////////////
// Display-P3 transformations
-// See SMPTE EG 432-1, Table 7-2.
+// See SMPTE EG 432-1, Equation 7-8.
static const float kP3R = 0.20949f, kP3G = 0.72160f, kP3B = 0.06891f;
float p3Luminance(Color e) {
return kP3R * e.r + kP3G * e.g + kP3B * e.b;
}
+// See ITU-R BT.601-7, Sections 2.5.1 and 2.5.2.
+// Unfortunately, calculation of luma signal differs from calculation of
+// luminance for Display-P3, so we can't reuse p3Luminance here.
+static const float kP3YR = 0.299f, kP3YG = 0.587f, kP3YB = 0.114f;
+static const float kP3Cb = 1.772f, kP3Cr = 1.402f;
+
+Color p3RgbToYuv(Color e_gamma) {
+ float y_gamma = kP3YR * e_gamma.r + kP3YG * e_gamma.g + kP3YB * e_gamma.b;
+ return {{{ y_gamma,
+ (e_gamma.b - y_gamma) / kP3Cb,
+ (e_gamma.r - y_gamma) / kP3Cr }}};
+}
+
+// See ITU-R BT.601-7, Sections 2.5.1 and 2.5.2.
+// Same derivation to BT.2100's YUV->RGB, below. Similar to p3RgbToYuv, we must
+// use luma signal coefficients rather than the luminance coefficients.
+static const float kP3GCb = kP3YB * kP3Cb / kP3YG;
+static const float kP3GCr = kP3YR * kP3Cr / kP3YG;
+
+Color p3YuvToRgb(Color e_gamma) {
+ return {{{ clampPixelFloat(e_gamma.y + kP3Cr * e_gamma.v),
+ clampPixelFloat(e_gamma.y - kP3GCb * e_gamma.u - kP3GCr * e_gamma.v),
+ clampPixelFloat(e_gamma.y + kP3Cb * e_gamma.u) }}};
+}
+
////////////////////////////////////////////////////////////////////////////////
// BT.2100 transformations - according to ITU-R BT.2100-2
@@ -197,6 +227,8 @@ float bt2100Luminance(Color e) {
}
// See ITU-R BT.2100-2, Table 6, Derivation of colour difference signals.
+// BT.2100 uses the same coefficients for calculating luma signal and luminance,
+// so we reuse the luminance function here.
static const float kBt2100Cb = 1.8814f, kBt2100Cr = 1.4746f;
Color bt2100RgbToYuv(Color e_gamma) {
@@ -206,6 +238,10 @@ Color bt2100RgbToYuv(Color e_gamma) {
(e_gamma.r - y_gamma) / kBt2100Cr }}};
}
+// See ITU-R BT.2100-2, Table 6, Derivation of colour difference signals.
+//
+// Similar to bt2100RgbToYuv above, we can reuse the luminance coefficients.
+//
// Derived by inversing bt2100RgbToYuv. The derivation for R and B are pretty
// straight forward; we just invert the formulas for U and V above. But deriving
// the formula for G is a bit more complicated:
@@ -440,6 +476,85 @@ ColorTransformFn getHdrConversionFn(ultrahdr_color_gamut sdr_gamut,
}
}
+// All of these conversions are derived from the respective input YUV->RGB conversion followed by
+// the RGB->YUV for the receiving encoding. They are consistent with the RGB<->YUV functions in this
+// file, given that we uses BT.709 encoding for sRGB and BT.601 encoding for Display-P3, to match
+// DataSpace.
+
+Color yuv709To601(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + 0.101579f * e_gamma.u + 0.196076f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.989854f * e_gamma.u + -0.110653f * e_gamma.v,
+ 0.0f * e_gamma.y + -0.072453f * e_gamma.u + 0.983398f * e_gamma.v }}};
+}
+
+Color yuv709To2100(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + -0.016969f * e_gamma.u + 0.096312f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.995306f * e_gamma.u + -0.051192f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.011507f * e_gamma.u + 1.002637f * e_gamma.v }}};
+}
+
+Color yuv601To709(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + -0.118188f * e_gamma.u + -0.212685f * e_gamma.v,
+ 0.0f * e_gamma.y + 1.018640f * e_gamma.u + 0.114618f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.075049f * e_gamma.u + 1.025327f * e_gamma.v }}};
+}
+
+Color yuv601To2100(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + -0.128245f * e_gamma.u + -0.115879f * e_gamma.v,
+ 0.0f * e_gamma.y + 1.010016f * e_gamma.u + 0.061592f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.086969f * e_gamma.u + 1.029350f * e_gamma.v }}};
+}
+
+Color yuv2100To709(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + 0.018149f * e_gamma.u + -0.095132f * e_gamma.v,
+ 0.0f * e_gamma.y + 1.004123f * e_gamma.u + 0.051267f * e_gamma.v,
+ 0.0f * e_gamma.y + -0.011524f * e_gamma.u + 0.996782f * e_gamma.v }}};
+}
+
+Color yuv2100To601(Color e_gamma) {
+ return {{{ 1.0f * e_gamma.y + 0.117887f * e_gamma.u + 0.105521f * e_gamma.v,
+ 0.0f * e_gamma.y + 0.995211f * e_gamma.u + -0.059549f * e_gamma.v,
+ 0.0f * e_gamma.y + -0.084085f * e_gamma.u + 0.976518f * e_gamma.v }}};
+}
+
+void transformYuv420(jr_uncompressed_ptr image, size_t x_chroma, size_t y_chroma,
+ ColorTransformFn fn) {
+ Color yuv1 = getYuv420Pixel(image, x_chroma * 2, y_chroma * 2 );
+ Color yuv2 = getYuv420Pixel(image, x_chroma * 2 + 1, y_chroma * 2 );
+ Color yuv3 = getYuv420Pixel(image, x_chroma * 2, y_chroma * 2 + 1);
+ Color yuv4 = getYuv420Pixel(image, x_chroma * 2 + 1, y_chroma * 2 + 1);
+
+ yuv1 = fn(yuv1);
+ yuv2 = fn(yuv2);
+ yuv3 = fn(yuv3);
+ yuv4 = fn(yuv4);
+
+ Color new_uv = (yuv1 + yuv2 + yuv3 + yuv4) / 4.0f;
+
+ size_t pixel_y1_idx = x_chroma * 2 + y_chroma * 2 * image->width;
+ size_t pixel_y2_idx = (x_chroma * 2 + 1) + y_chroma * 2 * image->width;
+ size_t pixel_y3_idx = x_chroma * 2 + (y_chroma * 2 + 1) * image->width;
+ size_t pixel_y4_idx = (x_chroma * 2 + 1) + (y_chroma * 2 + 1) * image->width;
+
+ uint8_t& y1_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_y1_idx];
+ uint8_t& y2_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_y2_idx];
+ uint8_t& y3_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_y3_idx];
+ uint8_t& y4_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_y4_idx];
+
+ size_t pixel_count = image->width * image->height;
+ size_t pixel_uv_idx = x_chroma + y_chroma * (image->width / 2);
+
+ uint8_t& u_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_count + pixel_uv_idx];
+ uint8_t& v_uint = reinterpret_cast<uint8_t*>(image->data)[pixel_count * 5 / 4 + pixel_uv_idx];
+
+ y1_uint = static_cast<uint8_t>(floor(yuv1.y * 255.0f + 0.5f));
+ y2_uint = static_cast<uint8_t>(floor(yuv2.y * 255.0f + 0.5f));
+ y3_uint = static_cast<uint8_t>(floor(yuv3.y * 255.0f + 0.5f));
+ y4_uint = static_cast<uint8_t>(floor(yuv4.y * 255.0f + 0.5f));
+
+ u_uint = static_cast<uint8_t>(floor(new_uv.u * 255.0f + 128.0f + 0.5f));
+ v_uint = static_cast<uint8_t>(floor(new_uv.v * 255.0f + 128.0f + 0.5f));
+}
////////////////////////////////////////////////////////////////////////////////
// Gain map calculations
diff --git a/libs/ultrahdr/icc.cpp b/libs/ultrahdr/icc.cpp
index 32d08aa525..1ab3c7c793 100644
--- a/libs/ultrahdr/icc.cpp
+++ b/libs/ultrahdr/icc.cpp
@@ -14,6 +14,10 @@
* limitations under the License.
*/
+#ifndef USE_BIG_ENDIAN
+#define USE_BIG_ENDIAN true
+#endif
+
#include <ultrahdr/icc.h>
#include <ultrahdr/gainmapmath.h>
#include <vector>
@@ -540,13 +544,21 @@ sp<DataStruct> IccHelper::writeIccProfile(ultrahdr_transfer_function tf,
size_t tag_table_size = kICCTagTableEntrySize * tags.size();
size_t profile_size = kICCHeaderSize + tag_table_size + tag_data_size;
+ sp<DataStruct> dataStruct = sp<DataStruct>::make(profile_size + kICCIdentifierSize);
+
+ // Write identifier, chunk count, and chunk ID
+ if (!dataStruct->write(kICCIdentifier, sizeof(kICCIdentifier)) ||
+ !dataStruct->write8(1) || !dataStruct->write8(1)) {
+ ALOGE("writeIccProfile(): error in identifier");
+ return dataStruct;
+ }
+
// Write the header.
header.data_color_space = Endian_SwapBE32(Signature_RGB);
header.pcs = Endian_SwapBE32(tf == ULTRAHDR_TF_PQ ? Signature_Lab : Signature_XYZ);
header.size = Endian_SwapBE32(profile_size);
header.tag_count = Endian_SwapBE32(tags.size());
- sp<DataStruct> dataStruct = sp<DataStruct>::make(profile_size);
if (!dataStruct->write(&header, sizeof(header))) {
ALOGE("writeIccProfile(): error in header");
return dataStruct;
@@ -582,4 +594,84 @@ sp<DataStruct> IccHelper::writeIccProfile(ultrahdr_transfer_function tf,
return dataStruct;
}
-} // namespace android::ultrahdr \ No newline at end of file
+bool IccHelper::tagsEqualToMatrix(const Matrix3x3& matrix,
+ const uint8_t* red_tag,
+ const uint8_t* green_tag,
+ const uint8_t* blue_tag) {
+ sp<DataStruct> red_tag_test = write_xyz_tag(matrix.vals[0][0], matrix.vals[1][0],
+ matrix.vals[2][0]);
+ sp<DataStruct> green_tag_test = write_xyz_tag(matrix.vals[0][1], matrix.vals[1][1],
+ matrix.vals[2][1]);
+ sp<DataStruct> blue_tag_test = write_xyz_tag(matrix.vals[0][2], matrix.vals[1][2],
+ matrix.vals[2][2]);
+ return memcmp(red_tag, red_tag_test->getData(), kColorantTagSize) == 0 &&
+ memcmp(green_tag, green_tag_test->getData(), kColorantTagSize) == 0 &&
+ memcmp(blue_tag, blue_tag_test->getData(), kColorantTagSize) == 0;
+}
+
+ultrahdr_color_gamut IccHelper::readIccColorGamut(void* icc_data, size_t icc_size) {
+ // Each tag table entry consists of 3 fields of 4 bytes each.
+ static const size_t kTagTableEntrySize = 12;
+
+ if (icc_data == nullptr || icc_size < sizeof(ICCHeader) + kICCIdentifierSize) {
+ return ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+ }
+
+ if (memcmp(icc_data, kICCIdentifier, sizeof(kICCIdentifier)) != 0) {
+ return ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+ }
+
+ uint8_t* icc_bytes = reinterpret_cast<uint8_t*>(icc_data) + kICCIdentifierSize;
+
+ ICCHeader* header = reinterpret_cast<ICCHeader*>(icc_bytes);
+
+ // Use 0 to indicate not found, since offsets are always relative to start
+ // of ICC data and therefore a tag offset of zero would never be valid.
+ size_t red_primary_offset = 0, green_primary_offset = 0, blue_primary_offset = 0;
+ size_t red_primary_size = 0, green_primary_size = 0, blue_primary_size = 0;
+ for (size_t tag_idx = 0; tag_idx < Endian_SwapBE32(header->tag_count); ++tag_idx) {
+ uint32_t* tag_entry_start = reinterpret_cast<uint32_t*>(
+ icc_bytes + sizeof(ICCHeader) + tag_idx * kTagTableEntrySize);
+ // first 4 bytes are the tag signature, next 4 bytes are the tag offset,
+ // last 4 bytes are the tag length in bytes.
+ if (red_primary_offset == 0 && *tag_entry_start == Endian_SwapBE32(kTAG_rXYZ)) {
+ red_primary_offset = Endian_SwapBE32(*(tag_entry_start+1));
+ red_primary_size = Endian_SwapBE32(*(tag_entry_start+2));
+ } else if (green_primary_offset == 0 && *tag_entry_start == Endian_SwapBE32(kTAG_gXYZ)) {
+ green_primary_offset = Endian_SwapBE32(*(tag_entry_start+1));
+ green_primary_size = Endian_SwapBE32(*(tag_entry_start+2));
+ } else if (blue_primary_offset == 0 && *tag_entry_start == Endian_SwapBE32(kTAG_bXYZ)) {
+ blue_primary_offset = Endian_SwapBE32(*(tag_entry_start+1));
+ blue_primary_size = Endian_SwapBE32(*(tag_entry_start+2));
+ }
+ }
+
+ if (red_primary_offset == 0 || red_primary_size != kColorantTagSize ||
+ kICCIdentifierSize + red_primary_offset + red_primary_size > icc_size ||
+ green_primary_offset == 0 || green_primary_size != kColorantTagSize ||
+ kICCIdentifierSize + green_primary_offset + green_primary_size > icc_size ||
+ blue_primary_offset == 0 || blue_primary_size != kColorantTagSize ||
+ kICCIdentifierSize + blue_primary_offset + blue_primary_size > icc_size) {
+ return ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+ }
+
+ uint8_t* red_tag = icc_bytes + red_primary_offset;
+ uint8_t* green_tag = icc_bytes + green_primary_offset;
+ uint8_t* blue_tag = icc_bytes + blue_primary_offset;
+
+ // Serialize tags as we do on encode and compare what we find to that to
+ // determine the gamut (since we don't have a need yet for full deserialize).
+ if (tagsEqualToMatrix(kSRGB, red_tag, green_tag, blue_tag)) {
+ return ULTRAHDR_COLORGAMUT_BT709;
+ } else if (tagsEqualToMatrix(kDisplayP3, red_tag, green_tag, blue_tag)) {
+ return ULTRAHDR_COLORGAMUT_P3;
+ } else if (tagsEqualToMatrix(kRec2020, red_tag, green_tag, blue_tag)) {
+ return ULTRAHDR_COLORGAMUT_BT2100;
+ }
+
+ // Didn't find a match to one of the profiles we write; indicate the gamut
+ // is unspecified since we don't understand it.
+ return ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+}
+
+} // namespace android::ultrahdr
diff --git a/libs/ultrahdr/include/ultrahdr/gainmapmath.h b/libs/ultrahdr/include/ultrahdr/gainmapmath.h
index abc93567f2..13832db752 100644
--- a/libs/ultrahdr/include/ultrahdr/gainmapmath.h
+++ b/libs/ultrahdr/include/ultrahdr/gainmapmath.h
@@ -218,24 +218,30 @@ struct ShepardsIDW {
// except for those concerning transfer functions.
/*
- * Calculate the luminance of a linear RGB sRGB pixel, according to IEC 61966-2-1.
+ * Calculate the luminance of a linear RGB sRGB pixel, according to
+ * IEC 61966-2-1/Amd 1:2003.
*
* [0.0, 1.0] range in and out.
*/
float srgbLuminance(Color e);
/*
- * Convert from OETF'd srgb YUV to RGB, according to ECMA TR/98.
+ * Convert from OETF'd srgb RGB to YUV, according to ITU-R BT.709-6.
+ *
+ * BT.709 YUV<->RGB matrix is used to match expectations for DataSpace.
*/
-Color srgbYuvToRgb(Color e_gamma);
+Color srgbRgbToYuv(Color e_gamma);
+
/*
- * Convert from OETF'd srgb RGB to YUV, according to ECMA TR/98.
+ * Convert from OETF'd srgb YUV to RGB, according to ITU-R BT.709-6.
+ *
+ * BT.709 YUV<->RGB matrix is used to match expectations for DataSpace.
*/
-Color srgbRgbToYuv(Color e_gamma);
+Color srgbYuvToRgb(Color e_gamma);
/*
- * Convert from srgb to linear, according to IEC 61966-2-1.
+ * Convert from srgb to linear, according to IEC 61966-2-1/Amd 1:2003.
*
* [0.0, 1.0] range in and out.
*/
@@ -257,6 +263,20 @@ constexpr size_t kSrgbInvOETFNumEntries = 1 << kSrgbInvOETFPrecision;
*/
float p3Luminance(Color e);
+/*
+ * Convert from OETF'd P3 RGB to YUV, according to ITU-R BT.601-7.
+ *
+ * BT.601 YUV<->RGB matrix is used to match expectations for DataSpace.
+ */
+Color p3RgbToYuv(Color e_gamma);
+
+/*
+ * Convert from OETF'd P3 YUV to RGB, according to ITU-R BT.601-7.
+ *
+ * BT.601 YUV<->RGB matrix is used to match expectations for DataSpace.
+ */
+Color p3YuvToRgb(Color e_gamma);
+
////////////////////////////////////////////////////////////////////////////////
// BT.2100 transformations - according to ITU-R BT.2100-2
@@ -269,12 +289,16 @@ float p3Luminance(Color e);
float bt2100Luminance(Color e);
/*
- * Convert from OETF'd BT.2100 RGB to YUV.
+ * Convert from OETF'd BT.2100 RGB to YUV, according to ITU-R BT.2100-2.
+ *
+ * BT.2100 YUV<->RGB matrix is used to match expectations for DataSpace.
*/
Color bt2100RgbToYuv(Color e_gamma);
/*
- * Convert from OETF'd BT.2100 YUV to RGB.
+ * Convert from OETF'd BT.2100 YUV to RGB, according to ITU-R BT.2100-2.
+ *
+ * BT.2100 YUV<->RGB matrix is used to match expectations for DataSpace.
*/
Color bt2100YuvToRgb(Color e_gamma);
@@ -358,6 +382,31 @@ inline Color identityConversion(Color e) { return e; }
*/
ColorTransformFn getHdrConversionFn(ultrahdr_color_gamut sdr_gamut, ultrahdr_color_gamut hdr_gamut);
+/*
+ * Convert between YUV encodings, according to ITU-R BT.709-6, ITU-R BT.601-7, and ITU-R BT.2100-2.
+ *
+ * Bt.709 and Bt.2100 have well-defined YUV encodings; Display-P3's is less well defined, but is
+ * treated as Bt.601 by DataSpace, hence we do the same.
+ */
+Color yuv709To601(Color e_gamma);
+Color yuv709To2100(Color e_gamma);
+Color yuv601To709(Color e_gamma);
+Color yuv601To2100(Color e_gamma);
+Color yuv2100To709(Color e_gamma);
+Color yuv2100To601(Color e_gamma);
+
+/*
+ * Performs a transformation at the chroma x and y coordinates provided on a YUV420 image.
+ *
+ * Apply the transformation by determining transformed YUV for each of the 4 Y + 1 UV; each Y gets
+ * this result, and UV gets the averaged result.
+ *
+ * x_chroma and y_chroma should be less than or equal to half the image's width and height
+ * respecitively, since input is 4:2:0 subsampled.
+ */
+void transformYuv420(jr_uncompressed_ptr image, size_t x_chroma, size_t y_chroma,
+ ColorTransformFn fn);
+
////////////////////////////////////////////////////////////////////////////////
// Gain map calculations
diff --git a/libs/ultrahdr/include/ultrahdr/icc.h b/libs/ultrahdr/include/ultrahdr/icc.h
index 7f6ab882c6..7f047f8f5b 100644
--- a/libs/ultrahdr/include/ultrahdr/icc.h
+++ b/libs/ultrahdr/include/ultrahdr/icc.h
@@ -56,12 +56,16 @@ enum {
Signature_XYZ = 0x58595A20,
};
-
typedef uint32_t FourByteTag;
static inline constexpr FourByteTag SetFourByteTag(char a, char b, char c, char d) {
return (((uint32_t)a << 24) | ((uint32_t)b << 16) | ((uint32_t)c << 8) | (uint32_t)d);
}
+static constexpr char kICCIdentifier[] = "ICC_PROFILE";
+// 12 for the actual identifier, +2 for the chunk count and chunk index which
+// will always follow.
+static constexpr size_t kICCIdentifierSize = 14;
+
// This is equal to the header size according to the ICC specification (128)
// plus the size of the tag count (4). We include the tag count since we
// always require it to be present anyway.
@@ -70,6 +74,10 @@ static constexpr size_t kICCHeaderSize = 132;
// Contains a signature (4), offset (4), and size (4).
static constexpr size_t kICCTagTableEntrySize = 12;
+// size should be 20; 4 bytes for type descriptor, 4 bytes reserved, 12
+// bytes for a single XYZ number type (4 bytes per coordinate).
+static constexpr size_t kColorantTagSize = 20;
+
static constexpr uint32_t kDisplay_Profile = SetFourByteTag('m', 'n', 't', 'r');
static constexpr uint32_t kRGB_ColorSpace = SetFourByteTag('R', 'G', 'B', ' ');
static constexpr uint32_t kXYZ_PCSSpace = SetFourByteTag('X', 'Y', 'Z', ' ');
@@ -225,10 +233,23 @@ private:
static void compute_lut_entry(const Matrix3x3& src_to_XYZD50, float rgb[3]);
static sp<DataStruct> write_clut(const uint8_t* grid_points, const uint8_t* grid_16);
+ // Checks if a set of xyz tags is equivalent to a 3x3 Matrix. Each input
+ // tag buffer assumed to be at least kColorantTagSize in size.
+ static bool tagsEqualToMatrix(const Matrix3x3& matrix,
+ const uint8_t* red_tag,
+ const uint8_t* green_tag,
+ const uint8_t* blue_tag);
+
public:
+ // Output includes JPEG embedding identifier and chunk information, but not
+ // APPx information.
static sp<DataStruct> writeIccProfile(const ultrahdr_transfer_function tf,
const ultrahdr_color_gamut gamut);
+ // NOTE: this function is not robust; it can infer gamuts that IccHelper
+ // writes out but should not be considered a reference implementation for
+ // robust parsing of ICC profiles or their gamuts.
+ static ultrahdr_color_gamut readIccColorGamut(void* icc_data, size_t icc_size);
};
} // namespace android::ultrahdr
-#endif //ANDROID_ULTRAHDR_ICC_H \ No newline at end of file
+#endif //ANDROID_ULTRAHDR_ICC_H
diff --git a/libs/ultrahdr/include/ultrahdr/jpegdecoderhelper.h b/libs/ultrahdr/include/ultrahdr/jpegdecoderhelper.h
index 4f2b7423c8..8b5499a2c0 100644
--- a/libs/ultrahdr/include/ultrahdr/jpegdecoderhelper.h
+++ b/libs/ultrahdr/include/ultrahdr/jpegdecoderhelper.h
@@ -83,11 +83,14 @@ public:
*/
size_t getEXIFSize();
/*
- * Returns the position offset of EXIF package
- * (4 bypes offset to FF sign, the byte after FF E1 XX XX <this byte>),
- * or -1 if no EXIF exists.
+ * Returns the ICC data from the image.
*/
- int getEXIFPos() { return mExifPos; }
+ void* getICCPtr();
+ /*
+ * Returns the decompressed ICC buffer size. This method must be called only after
+ * calling decompressImage() or getCompressedImageParameters().
+ */
+ size_t getICCSize();
/*
* Decompresses metadata of the image. All vectors are owned by the caller.
*/
@@ -112,12 +115,12 @@ private:
std::vector<JOCTET> mXMPBuffer;
// The buffer that holds EXIF Data.
std::vector<JOCTET> mEXIFBuffer;
+ // The buffer that holds ICC Data.
+ std::vector<JOCTET> mICCBuffer;
// Resolution of the decompressed image.
size_t mWidth;
size_t mHeight;
- // Position of EXIF package, default value is -1 which means no EXIF package appears.
- size_t mExifPos;
};
} /* namespace android::ultrahdr */
diff --git a/libs/ultrahdr/include/ultrahdr/jpegr.h b/libs/ultrahdr/include/ultrahdr/jpegr.h
index 1f9bd0f930..9546ca4762 100644
--- a/libs/ultrahdr/include/ultrahdr/jpegr.h
+++ b/libs/ultrahdr/include/ultrahdr/jpegr.h
@@ -125,7 +125,7 @@ public:
*
* Generate gain map from the HDR and SDR inputs, compress SDR YUV to 8-bit JPEG and append
* the gain map to the end of the compressed JPEG. HDR and SDR inputs must be the same
- * resolution.
+ * resolution. SDR input is assumed to use the sRGB transfer function.
* @param uncompressed_p010_image uncompressed HDR image in P010 color format
* @param uncompressed_yuv_420_image uncompressed SDR image in YUV_420 color format
* @param hdr_tf transfer function of the HDR image
@@ -152,7 +152,9 @@ public:
* This method requires HAL Hardware JPEG encoder.
*
* Generate gain map from the HDR and SDR inputs, append the gain map to the end of the
- * compressed JPEG. HDR and SDR inputs must be the same resolution and color space.
+ * compressed JPEG. Adds an ICC profile if one isn't present in the input JPEG image. HDR and
+ * SDR inputs must be the same resolution and color space. SDR image is assumed to use the sRGB
+ * transfer function.
* @param uncompressed_p010_image uncompressed HDR image in P010 color format
* @param uncompressed_yuv_420_image uncompressed SDR image in YUV_420 color format
* Note: the SDR image must be the decoded version of the JPEG
@@ -178,8 +180,9 @@ public:
* This method requires HAL Hardware JPEG encoder.
*
* Decode the compressed 8-bit JPEG image to YUV SDR, generate gain map from the HDR input
- * and the decoded SDR result, append the gain map to the end of the compressed JPEG. HDR
- * and SDR inputs must be the same resolution.
+ * and the decoded SDR result, append the gain map to the end of the compressed JPEG. Adds an
+ * ICC profile if one isn't present in the input JPEG image. HDR and SDR inputs must be the same
+ * resolution. JPEG image is assumed to use the sRGB transfer function.
* @param uncompressed_p010_image uncompressed HDR image in P010 color format
* @param compressed_jpeg_image compressed 8-bit JPEG image
* @param hdr_tf transfer function of the HDR image
@@ -198,7 +201,8 @@ public:
* Encode API-4
* Assemble JPEGR image from SDR JPEG and gainmap JPEG.
*
- * Assemble the primary JPEG image, the gain map and the metadata to JPEG/R format.
+ * Assemble the primary JPEG image, the gain map and the metadata to JPEG/R format. Adds an ICC
+ * profile if one isn't present in the input JPEG image.
* @param compressed_jpeg_image compressed 8-bit JPEG image
* @param compressed_gainmap compressed 8-bit JPEG single channel image
* @param metadata metadata to be written in XMP of the primary jpeg
@@ -217,6 +221,9 @@ public:
* Decode API
* Decompress JPEGR image.
*
+ * This method assumes that the JPEGR image contains an ICC profile with primaries that match
+ * those of a color gamut that this library is aware of; Bt.709, Display-P3, or Bt.2100.
+ *
* @param compressed_jpegr_image compressed JPEGR image.
* @param dest destination of the uncompressed JPEGR image.
* @param max_display_boost (optional) the maximum available boost supported by a display,
@@ -270,26 +277,30 @@ protected:
/*
* This method is called in the encoding pipeline. It will take the uncompressed 8-bit and
* 10-bit yuv images as input, and calculate the uncompressed gain map. The input images
- * must be the same resolution.
+ * must be the same resolution. The SDR input is assumed to use the sRGB transfer function.
*
* @param uncompressed_yuv_420_image uncompressed SDR image in YUV_420 color format
* @param uncompressed_p010_image uncompressed HDR image in P010 color format
* @param hdr_tf transfer function of the HDR image
* @param dest gain map; caller responsible for memory of data
* @param metadata max_content_boost is filled in
+ * @param sdr_is_601 if true, then use BT.601 decoding of YUV regardless of SDR image gamut
* @return NO_ERROR if calculation succeeds, error code if error occurs.
*/
status_t generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
jr_uncompressed_ptr uncompressed_p010_image,
ultrahdr_transfer_function hdr_tf,
ultrahdr_metadata_ptr metadata,
- jr_uncompressed_ptr dest);
+ jr_uncompressed_ptr dest,
+ bool sdr_is_601 = false);
/*
* This method is called in the decoding pipeline. It will take the uncompressed (decoded)
* 8-bit yuv image, the uncompressed (decoded) gain map, and extracted JPEG/R metadata as
* input, and calculate the 10-bit recovered image. The recovered output image is the same
* color gamut as the SDR image, with HLG transfer function, and is in RGBA1010102 data format.
+ * The SDR image is assumed to use the sRGB transfer function. The SDR image is also assumed to
+ * be a decoded JPEG for the purpose of YUV interpration.
*
* @param uncompressed_yuv_420_image uncompressed SDR image in YUV_420 color format
* @param uncompressed_gain_map uncompressed gain map
@@ -353,6 +364,8 @@ private:
* @param compressed_jpeg_image compressed 8-bit JPEG image
* @param compress_gain_map compressed recover map
* @param (nullable) exif EXIF package
+ * @param (nullable) icc ICC package
+ * @param icc_size length in bytes of ICC package
* @param metadata JPEG/R metadata to encode in XMP of the jpeg
* @param dest compressed JPEGR image
* @return NO_ERROR if calculation succeeds, error code if error occurs.
@@ -360,6 +373,7 @@ private:
status_t appendGainMap(jr_compressed_ptr compressed_jpeg_image,
jr_compressed_ptr compressed_gain_map,
jr_exif_ptr exif,
+ void* icc, size_t icc_size,
ultrahdr_metadata_ptr metadata,
jr_compressed_ptr dest);
@@ -374,6 +388,22 @@ private:
jr_uncompressed_ptr dest);
/*
+ * This method will convert a YUV420 image from one YUV encoding to another in-place (eg.
+ * Bt.709 to Bt.601 YUV encoding).
+ *
+ * src_encoding and dest_encoding indicate the encoding via the YUV conversion defined for that
+ * gamut. P3 indicates Rec.601, since this is how DataSpace encodes Display-P3 YUV data.
+ *
+ * @param image the YUV420 image to convert
+ * @param src_encoding input YUV encoding
+ * @param dest_encoding output YUV encoding
+ * @return NO_ERROR if calculation succeeds, error code if error occurs.
+ */
+ status_t convertYuv(jr_uncompressed_ptr image,
+ ultrahdr_color_gamut src_encoding,
+ ultrahdr_color_gamut dest_encoding);
+
+ /*
* This method will check the validity of the input arguments.
*
* @param uncompressed_p010_image uncompressed HDR image in P010 color format
diff --git a/libs/ultrahdr/jpegdecoderhelper.cpp b/libs/ultrahdr/jpegdecoderhelper.cpp
index 0bad4a4de0..fef544452a 100644
--- a/libs/ultrahdr/jpegdecoderhelper.cpp
+++ b/libs/ultrahdr/jpegdecoderhelper.cpp
@@ -93,7 +93,6 @@ static void jpegrerror_exit(j_common_ptr cinfo) {
}
JpegDecoderHelper::JpegDecoderHelper() {
- mExifPos = 0;
}
JpegDecoderHelper::~JpegDecoderHelper() {
@@ -138,6 +137,14 @@ size_t JpegDecoderHelper::getEXIFSize() {
return mEXIFBuffer.size();
}
+void* JpegDecoderHelper::getICCPtr() {
+ return mICCBuffer.data();
+}
+
+size_t JpegDecoderHelper::getICCSize() {
+ return mICCBuffer.size();
+}
+
size_t JpegDecoderHelper::getDecompressedImageWidth() {
return mWidth;
}
@@ -168,31 +175,21 @@ bool JpegDecoderHelper::decode(const void* image, int length, bool decodeToRGBA)
cinfo.src = &mgr;
jpeg_read_header(&cinfo, TRUE);
- // Save XMP data and EXIF data.
- // Here we only handle the first XMP / EXIF package.
- // The parameter pos is used for capturing start offset of EXIF, which is hacky, but working...
+ // Save XMP data, EXIF data, and ICC data.
+ // Here we only handle the first XMP / EXIF / ICC package.
// We assume that all packages are starting with two bytes marker (eg FF E1 for EXIF package),
// two bytes of package length which is stored in marker->original_length, and the real data
- // which is stored in marker->data. The pos is adding up all previous package lengths (
- // 4 bytes marker and length, marker->original_length) before EXIF appears. Note that here we
- // we are using marker->original_length instead of marker->data_length because in case the real
- // package length is larger than the limitation, jpeg-turbo will only copy the data within the
- // limitation (represented by data_length) and this may vary from original_length / real offset.
- // A better solution is making jpeg_marker_struct holding the offset, but currently it doesn't.
+ // which is stored in marker->data.
bool exifAppears = false;
bool xmpAppears = false;
- size_t pos = 2; // position after SOI
+ bool iccAppears = false;
for (jpeg_marker_struct* marker = cinfo.marker_list;
- marker && !(exifAppears && xmpAppears);
+ marker && !(exifAppears && xmpAppears && iccAppears);
marker = marker->next) {
- pos += 4;
- pos += marker->original_length;
-
- if (marker->marker != kAPP1Marker) {
+ if (marker->marker != kAPP1Marker && marker->marker != kAPP2Marker) {
continue;
}
-
const unsigned int len = marker->data_length;
if (!xmpAppears &&
len > kXmpNameSpace.size() &&
@@ -210,7 +207,12 @@ bool JpegDecoderHelper::decode(const void* image, int length, bool decodeToRGBA)
mEXIFBuffer.resize(len, 0);
memcpy(static_cast<void*>(mEXIFBuffer.data()), marker->data, len);
exifAppears = true;
- mExifPos = pos - marker->original_length;
+ } else if (!iccAppears &&
+ len > sizeof(kICCSig) &&
+ !memcmp(marker->data, kICCSig, sizeof(kICCSig))) {
+ mICCBuffer.resize(len, 0);
+ memcpy(static_cast<void*>(mICCBuffer.data()), marker->data, len);
+ iccAppears = true;
}
}
@@ -228,6 +230,7 @@ bool JpegDecoderHelper::decode(const void* image, int length, bool decodeToRGBA)
if (cinfo.jpeg_color_space == JCS_GRAYSCALE) {
// We don't intend to support decoding grayscale to RGBA
status = false;
+ ALOGE("%s: decoding grayscale to RGBA is unsupported", __func__);
goto CleanUp;
}
// 4 bytes per pixel
@@ -242,6 +245,7 @@ bool JpegDecoderHelper::decode(const void* image, int length, bool decodeToRGBA)
cinfo.comp_info[1].v_samp_factor != 1 ||
cinfo.comp_info[2].v_samp_factor != 1) {
status = false;
+ ALOGE("%s: decoding to YUV only supports 4:2:0 subsampling", __func__);
goto CleanUp;
}
mResultBuffer.resize(cinfo.image_width * cinfo.image_height * 3 / 2, 0);
@@ -304,8 +308,12 @@ bool JpegDecoderHelper::getCompressedImageParameters(const void* image, int leng
return false;
}
- *pWidth = cinfo.image_width;
- *pHeight = cinfo.image_height;
+ if (pWidth != nullptr) {
+ *pWidth = cinfo.image_width;
+ }
+ if (pHeight != nullptr) {
+ *pHeight = cinfo.image_height;
+ }
if (iccData != nullptr) {
for (jpeg_marker_struct* marker = cinfo.marker_list; marker;
@@ -318,9 +326,7 @@ bool JpegDecoderHelper::getCompressedImageParameters(const void* image, int leng
continue;
}
- const unsigned int len = marker->data_length - kICCMarkerHeaderSize;
- const uint8_t *src = marker->data + kICCMarkerHeaderSize;
- iccData->insert(iccData->end(), src, src+len);
+ iccData->insert(iccData->end(), marker->data, marker->data + marker->data_length);
}
}
diff --git a/libs/ultrahdr/jpegr.cpp b/libs/ultrahdr/jpegr.cpp
index 415255d4ea..9af5af75e5 100644
--- a/libs/ultrahdr/jpegr.cpp
+++ b/libs/ultrahdr/jpegr.cpp
@@ -258,6 +258,10 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
sp<DataStruct> icc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
uncompressed_yuv_420_image.colorGamut);
+ // Convert to Bt601 YUV encoding for JPEG encode
+ JPEGR_CHECK(convertYuv(&uncompressed_yuv_420_image, uncompressed_yuv_420_image.colorGamut,
+ ULTRAHDR_COLORGAMUT_P3));
+
JpegEncoderHelper jpeg_encoder;
if (!jpeg_encoder.compressImage(uncompressed_yuv_420_image.data,
uncompressed_yuv_420_image.width,
@@ -269,7 +273,9 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
jpeg.data = jpeg_encoder.getCompressedImagePtr();
jpeg.length = jpeg_encoder.getCompressedImageSize();
- JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, &metadata, dest));
+ // No ICC since JPEG encode already did it
+ JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, /* icc */ nullptr, /* icc size */ 0,
+ &metadata, dest));
return NO_ERROR;
}
@@ -317,10 +323,22 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
sp<DataStruct> icc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
uncompressed_yuv_420_image->colorGamut);
+ // Convert to Bt601 YUV encoding for JPEG encode; make a copy so as to no clobber client data
+ unique_ptr<uint8_t[]> yuv_420_bt601_data = make_unique<uint8_t[]>(
+ uncompressed_yuv_420_image->width * uncompressed_yuv_420_image->height * 3 / 2);
+ memcpy(yuv_420_bt601_data.get(), uncompressed_yuv_420_image->data,
+ uncompressed_yuv_420_image->width * uncompressed_yuv_420_image->height * 3 / 2);
+
+ jpegr_uncompressed_struct yuv_420_bt601_image = {
+ yuv_420_bt601_data.get(), uncompressed_yuv_420_image->width, uncompressed_yuv_420_image->height,
+ uncompressed_yuv_420_image->colorGamut };
+ JPEGR_CHECK(convertYuv(&yuv_420_bt601_image, yuv_420_bt601_image.colorGamut,
+ ULTRAHDR_COLORGAMUT_P3));
+
JpegEncoderHelper jpeg_encoder;
- if (!jpeg_encoder.compressImage(uncompressed_yuv_420_image->data,
- uncompressed_yuv_420_image->width,
- uncompressed_yuv_420_image->height, quality,
+ if (!jpeg_encoder.compressImage(yuv_420_bt601_image.data,
+ yuv_420_bt601_image.width,
+ yuv_420_bt601_image.height, quality,
icc->getData(), icc->getLength())) {
return ERROR_JPEGR_ENCODE_ERROR;
}
@@ -328,7 +346,9 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
jpeg.data = jpeg_encoder.getCompressedImagePtr();
jpeg.length = jpeg_encoder.getCompressedImageSize();
- JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, &metadata, dest));
+ // No ICC since jpeg encode already did it
+ JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, /* icc */ nullptr, /* icc size */ 0,
+ &metadata, dest));
return NO_ERROR;
}
@@ -371,7 +391,24 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
compressed_map.data = jpeg_encoder_gainmap.getCompressedImagePtr();
compressed_map.colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;
- JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, nullptr, &metadata, dest));
+ // We just want to check if ICC is present, so don't do a full decode. Note,
+ // this doesn't verify that the ICC is valid.
+ JpegDecoderHelper decoder;
+ std::vector<uint8_t> icc;
+ decoder.getCompressedImageParameters(compressed_jpeg_image->data, compressed_jpeg_image->length,
+ /* pWidth */ nullptr, /* pHeight */ nullptr,
+ &icc, /* exifData */ nullptr);
+
+ // Add ICC if not already present.
+ if (icc.size() > 0) {
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, /* exif */ nullptr,
+ /* icc */ nullptr, /* icc size */ 0, &metadata, dest));
+ } else {
+ sp<DataStruct> newIcc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+ uncompressed_yuv_420_image->colorGamut);
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, /* exif */ nullptr,
+ newIcc->getData(), newIcc->getLength(), &metadata, dest));
+ }
return NO_ERROR;
}
@@ -392,6 +429,7 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
return ret;
}
+ // Note: output is Bt.601 YUV encoded regardless of gamut, due to jpeg decode.
JpegDecoderHelper jpeg_decoder;
if (!jpeg_decoder.decompressImage(compressed_jpeg_image->data, compressed_jpeg_image->length)) {
return ERROR_JPEGR_DECODE_ERROR;
@@ -411,8 +449,10 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
metadata.version = kJpegrVersion;
jpegr_uncompressed_struct map;
+ // Indicate that the SDR image is Bt.601 YUV encoded.
JPEGR_CHECK(generateGainMap(
- &uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map));
+ &uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map,
+ true /* sdr_is_601 */ ));
std::unique_ptr<uint8_t[]> map_data;
map_data.reset(reinterpret_cast<uint8_t*>(map.data));
@@ -424,7 +464,24 @@ status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
compressed_map.data = jpeg_encoder_gainmap.getCompressedImagePtr();
compressed_map.colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;
- JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, nullptr, &metadata, dest));
+ // We just want to check if ICC is present, so don't do a full decode. Note,
+ // this doesn't verify that the ICC is valid.
+ JpegDecoderHelper decoder;
+ std::vector<uint8_t> icc;
+ decoder.getCompressedImageParameters(compressed_jpeg_image->data, compressed_jpeg_image->length,
+ /* pWidth */ nullptr, /* pHeight */ nullptr,
+ &icc, /* exifData */ nullptr);
+
+ // Add ICC if not already present.
+ if (icc.size() > 0) {
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, /* exif */ nullptr,
+ /* icc */ nullptr, /* icc size */ 0, &metadata, dest));
+ } else {
+ sp<DataStruct> newIcc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+ uncompressed_yuv_420_image.colorGamut);
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, /* exif */ nullptr,
+ newIcc->getData(), newIcc->getLength(), &metadata, dest));
+ }
return NO_ERROR;
}
@@ -449,8 +506,25 @@ status_t JpegR::encodeJPEGR(jr_compressed_ptr compressed_jpeg_image,
return ERROR_JPEGR_INVALID_NULL_PTR;
}
- JPEGR_CHECK(appendGainMap(compressed_jpeg_image, compressed_gainmap, /* exif */ nullptr,
- metadata, dest));
+ // We just want to check if ICC is present, so don't do a full decode. Note,
+ // this doesn't verify that the ICC is valid.
+ JpegDecoderHelper decoder;
+ std::vector<uint8_t> icc;
+ decoder.getCompressedImageParameters(compressed_jpeg_image->data, compressed_jpeg_image->length,
+ /* pWidth */ nullptr, /* pHeight */ nullptr,
+ &icc, /* exifData */ nullptr);
+
+ // Add ICC if not already present.
+ if (icc.size() > 0) {
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, compressed_gainmap, /* exif */ nullptr,
+ /* icc */ nullptr, /* icc size */ 0, metadata, dest));
+ } else {
+ sp<DataStruct> newIcc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+ compressed_jpeg_image->colorGamut);
+ JPEGR_CHECK(appendGainMap(compressed_jpeg_image, compressed_gainmap, /* exif */ nullptr,
+ newIcc->getData(), newIcc->getLength(), metadata, dest));
+ }
+
return NO_ERROR;
}
@@ -613,6 +687,9 @@ status_t JpegR::decodeJPEGR(jr_compressed_ptr compressed_jpegr_image,
uncompressed_yuv_420_image.data = jpeg_decoder.getDecompressedImagePtr();
uncompressed_yuv_420_image.width = jpeg_decoder.getDecompressedImageWidth();
uncompressed_yuv_420_image.height = jpeg_decoder.getDecompressedImageHeight();
+ uncompressed_yuv_420_image.colorGamut = IccHelper::readIccColorGamut(
+ jpeg_decoder.getICCPtr(), jpeg_decoder.getICCSize());
+
JPEGR_CHECK(applyGainMap(&uncompressed_yuv_420_image, &map, &uhdr_metadata, output_format,
max_display_boost, dest));
return NO_ERROR;
@@ -624,6 +701,7 @@ status_t JpegR::compressGainMap(jr_uncompressed_ptr uncompressed_gain_map,
return ERROR_JPEGR_INVALID_NULL_PTR;
}
+ // Don't need to convert YUV to Bt601 since single channel
if (!jpeg_encoder->compressImage(uncompressed_gain_map->data,
uncompressed_gain_map->width,
uncompressed_gain_map->height,
@@ -699,7 +777,8 @@ status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
jr_uncompressed_ptr uncompressed_p010_image,
ultrahdr_transfer_function hdr_tf,
ultrahdr_metadata_ptr metadata,
- jr_uncompressed_ptr dest) {
+ jr_uncompressed_ptr dest,
+ bool sdr_is_601) {
if (uncompressed_yuv_420_image == nullptr
|| uncompressed_p010_image == nullptr
|| metadata == nullptr
@@ -768,15 +847,38 @@ status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
uncompressed_yuv_420_image->colorGamut, uncompressed_p010_image->colorGamut);
ColorCalculationFn luminanceFn = nullptr;
+ ColorTransformFn sdrYuvToRgbFn = nullptr;
switch (uncompressed_yuv_420_image->colorGamut) {
case ULTRAHDR_COLORGAMUT_BT709:
luminanceFn = srgbLuminance;
+ sdrYuvToRgbFn = srgbYuvToRgb;
break;
case ULTRAHDR_COLORGAMUT_P3:
luminanceFn = p3Luminance;
+ sdrYuvToRgbFn = p3YuvToRgb;
break;
case ULTRAHDR_COLORGAMUT_BT2100:
luminanceFn = bt2100Luminance;
+ sdrYuvToRgbFn = bt2100YuvToRgb;
+ break;
+ case ULTRAHDR_COLORGAMUT_UNSPECIFIED:
+ // Should be impossible to hit after input validation.
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+ if (sdr_is_601) {
+ sdrYuvToRgbFn = p3YuvToRgb;
+ }
+
+ ColorTransformFn hdrYuvToRgbFn = nullptr;
+ switch (uncompressed_p010_image->colorGamut) {
+ case ULTRAHDR_COLORGAMUT_BT709:
+ hdrYuvToRgbFn = srgbYuvToRgb;
+ break;
+ case ULTRAHDR_COLORGAMUT_P3:
+ hdrYuvToRgbFn = p3YuvToRgb;
+ break;
+ case ULTRAHDR_COLORGAMUT_BT2100:
+ hdrYuvToRgbFn = bt2100YuvToRgb;
break;
case ULTRAHDR_COLORGAMUT_UNSPECIFIED:
// Should be impossible to hit after input validation.
@@ -790,8 +892,8 @@ status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
std::function<void()> generateMap = [uncompressed_yuv_420_image, uncompressed_p010_image,
metadata, dest, hdrInvOetf, hdrGamutConversionFn,
- luminanceFn, hdr_white_nits, log2MinBoost, log2MaxBoost,
- &jobQueue]() -> void {
+ luminanceFn, sdrYuvToRgbFn, hdrYuvToRgbFn, hdr_white_nits,
+ log2MinBoost, log2MaxBoost, &jobQueue]() -> void {
size_t rowStart, rowEnd;
size_t dest_map_width = uncompressed_yuv_420_image->width / kMapDimensionScaleFactor;
size_t dest_map_stride = dest->width;
@@ -800,7 +902,8 @@ status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
for (size_t x = 0; x < dest_map_width; ++x) {
Color sdr_yuv_gamma =
sampleYuv420(uncompressed_yuv_420_image, kMapDimensionScaleFactor, x, y);
- Color sdr_rgb_gamma = srgbYuvToRgb(sdr_yuv_gamma);
+ Color sdr_rgb_gamma = sdrYuvToRgbFn(sdr_yuv_gamma);
+ // We are assuming the SDR input is always sRGB transfer.
#if USE_SRGB_INVOETF_LUT
Color sdr_rgb = srgbInvOetfLUT(sdr_rgb_gamma);
#else
@@ -809,7 +912,7 @@ status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
float sdr_y_nits = luminanceFn(sdr_rgb) * kSdrWhiteNits;
Color hdr_yuv_gamma = sampleP010(uncompressed_p010_image, kMapDimensionScaleFactor, x, y);
- Color hdr_rgb_gamma = bt2100YuvToRgb(hdr_yuv_gamma);
+ Color hdr_rgb_gamma = hdrYuvToRgbFn(hdr_yuv_gamma);
Color hdr_rgb = hdrInvOetf(hdr_rgb_gamma);
hdr_rgb = hdrGamutConversionFn(hdr_rgb);
float hdr_y_nits = luminanceFn(hdr_rgb) * hdr_white_nits;
@@ -887,7 +990,9 @@ status_t JpegR::applyGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
for (size_t y = rowStart; y < rowEnd; ++y) {
for (size_t x = 0; x < width; ++x) {
Color yuv_gamma_sdr = getYuv420Pixel(uncompressed_yuv_420_image, x, y);
- Color rgb_gamma_sdr = srgbYuvToRgb(yuv_gamma_sdr);
+ // Assuming the sdr image is a decoded JPEG, we should always use Rec.601 YUV coefficients
+ Color rgb_gamma_sdr = p3YuvToRgb(yuv_gamma_sdr);
+ // We are assuming the SDR base image is always sRGB transfer.
#if USE_SRGB_INVOETF_LUT
Color rgb_sdr = srgbInvOetfLUT(rgb_gamma_sdr);
#else
@@ -1065,6 +1170,7 @@ status_t JpegR::extractGainMap(jr_compressed_ptr compressed_jpegr_image,
status_t JpegR::appendGainMap(jr_compressed_ptr compressed_jpeg_image,
jr_compressed_ptr compressed_gain_map,
jr_exif_ptr exif,
+ void* icc, size_t icc_size,
ultrahdr_metadata_ptr metadata,
jr_compressed_ptr dest) {
if (compressed_jpeg_image == nullptr
@@ -1128,6 +1234,18 @@ status_t JpegR::appendGainMap(jr_compressed_ptr compressed_jpeg_image,
JPEGR_CHECK(Write(dest, (void*)xmp_primary.c_str(), xmp_primary.size(), pos));
}
+ // Write ICC
+ if (icc != nullptr && icc_size > 0) {
+ const int length = icc_size + 2;
+ const uint8_t lengthH = ((length >> 8) & 0xff);
+ const uint8_t lengthL = (length & 0xff);
+ JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+ JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kAPP2, 1, pos));
+ JPEGR_CHECK(Write(dest, &lengthH, 1, pos));
+ JPEGR_CHECK(Write(dest, &lengthL, 1, pos));
+ JPEGR_CHECK(Write(dest, icc, icc_size, pos));
+ }
+
// Prepare and write MPF
{
const int length = 2 + calculateMpfSize();
@@ -1235,4 +1353,82 @@ status_t JpegR::toneMap(jr_uncompressed_ptr src, jr_uncompressed_ptr dest) {
return NO_ERROR;
}
+status_t JpegR::convertYuv(jr_uncompressed_ptr image,
+ ultrahdr_color_gamut src_encoding,
+ ultrahdr_color_gamut dest_encoding) {
+ if (image == nullptr) {
+ return ERROR_JPEGR_INVALID_NULL_PTR;
+ }
+
+ if (src_encoding == ULTRAHDR_COLORGAMUT_UNSPECIFIED
+ || dest_encoding == ULTRAHDR_COLORGAMUT_UNSPECIFIED) {
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+
+ ColorTransformFn conversionFn = nullptr;
+ switch (src_encoding) {
+ case ULTRAHDR_COLORGAMUT_BT709:
+ switch (dest_encoding) {
+ case ULTRAHDR_COLORGAMUT_BT709:
+ return NO_ERROR;
+ case ULTRAHDR_COLORGAMUT_P3:
+ conversionFn = yuv709To601;
+ break;
+ case ULTRAHDR_COLORGAMUT_BT2100:
+ conversionFn = yuv709To2100;
+ break;
+ default:
+ // Should be impossible to hit after input validation
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+ break;
+ case ULTRAHDR_COLORGAMUT_P3:
+ switch (dest_encoding) {
+ case ULTRAHDR_COLORGAMUT_BT709:
+ conversionFn = yuv601To709;
+ break;
+ case ULTRAHDR_COLORGAMUT_P3:
+ return NO_ERROR;
+ case ULTRAHDR_COLORGAMUT_BT2100:
+ conversionFn = yuv601To2100;
+ break;
+ default:
+ // Should be impossible to hit after input validation
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+ break;
+ case ULTRAHDR_COLORGAMUT_BT2100:
+ switch (dest_encoding) {
+ case ULTRAHDR_COLORGAMUT_BT709:
+ conversionFn = yuv2100To709;
+ break;
+ case ULTRAHDR_COLORGAMUT_P3:
+ conversionFn = yuv2100To601;
+ break;
+ case ULTRAHDR_COLORGAMUT_BT2100:
+ return NO_ERROR;
+ default:
+ // Should be impossible to hit after input validation
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+ break;
+ default:
+ // Should be impossible to hit after input validation
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+
+ if (conversionFn == nullptr) {
+ // Should be impossible to hit after input validation
+ return ERROR_JPEGR_INVALID_COLORGAMUT;
+ }
+
+ for (size_t y = 0; y < image->height / 2; ++y) {
+ for (size_t x = 0; x < image->width / 2; ++x) {
+ transformYuv420(image, x, y, conversionFn);
+ }
+ }
+
+ return NO_ERROR;
+}
+
} // namespace android::ultrahdr
diff --git a/libs/ultrahdr/tests/Android.bp b/libs/ultrahdr/tests/Android.bp
index 7dd9d04fbd..594413018c 100644
--- a/libs/ultrahdr/tests/Android.bp
+++ b/libs/ultrahdr/tests/Android.bp
@@ -25,8 +25,9 @@ cc_test {
name: "libultrahdr_test",
test_suites: ["device-tests"],
srcs: [
- "jpegr_test.cpp",
"gainmapmath_test.cpp",
+ "icchelper_test.cpp",
+ "jpegr_test.cpp",
],
shared_libs: [
"libimage_io",
@@ -72,5 +73,7 @@ cc_test {
static_libs: [
"libgtest",
"libjpegdecoder",
+ "libultrahdr",
+ "libutils",
],
}
diff --git a/libs/ultrahdr/tests/data/minnie-320x240-yuv-icc.jpg b/libs/ultrahdr/tests/data/minnie-320x240-yuv-icc.jpg
new file mode 100644
index 0000000000..f61e0e8525
--- /dev/null
+++ b/libs/ultrahdr/tests/data/minnie-320x240-yuv-icc.jpg
Binary files differ
diff --git a/libs/ultrahdr/tests/gainmapmath_test.cpp b/libs/ultrahdr/tests/gainmapmath_test.cpp
index c456653821..af90365e56 100644
--- a/libs/ultrahdr/tests/gainmapmath_test.cpp
+++ b/libs/ultrahdr/tests/gainmapmath_test.cpp
@@ -28,6 +28,7 @@ public:
float ComparisonEpsilon() { return 1e-4f; }
float LuminanceEpsilon() { return 1e-2f; }
+ float YuvConversionEpsilon() { return 1.0f / (255.0f * 2.0f); }
Color Yuv420(uint8_t y, uint8_t u, uint8_t v) {
return {{{ static_cast<float>(y) / 255.0f,
@@ -63,9 +64,13 @@ public:
Color YuvBlack() { return {{{ 0.0f, 0.0f, 0.0f }}}; }
Color YuvWhite() { return {{{ 1.0f, 0.0f, 0.0f }}}; }
- Color SrgbYuvRed() { return {{{ 0.299f, -0.1687f, 0.5f }}}; }
- Color SrgbYuvGreen() { return {{{ 0.587f, -0.3313f, -0.4187f }}}; }
- Color SrgbYuvBlue() { return {{{ 0.114f, 0.5f, -0.0813f }}}; }
+ Color SrgbYuvRed() { return {{{ 0.2126f, -0.11457f, 0.5f }}}; }
+ Color SrgbYuvGreen() { return {{{ 0.7152f, -0.38543f, -0.45415f }}}; }
+ Color SrgbYuvBlue() { return {{{ 0.0722f, 0.5f, -0.04585f }}}; }
+
+ Color P3YuvRed() { return {{{ 0.299f, -0.16874f, 0.5f }}}; }
+ Color P3YuvGreen() { return {{{ 0.587f, -0.33126f, -0.41869f }}}; }
+ Color P3YuvBlue() { return {{{ 0.114f, 0.5f, -0.08131f }}}; }
Color Bt2100YuvRed() { return {{{ 0.2627f, -0.13963f, 0.5f }}}; }
Color Bt2100YuvGreen() { return {{{ 0.6780f, -0.36037f, -0.45979f }}}; }
@@ -78,6 +83,13 @@ public:
return luminance_scaled * kSdrWhiteNits;
}
+ float P3YuvToLuminance(Color yuv_gamma, ColorCalculationFn luminanceFn) {
+ Color rgb_gamma = p3YuvToRgb(yuv_gamma);
+ Color rgb = srgbInvOetf(rgb_gamma);
+ float luminance_scaled = luminanceFn(rgb);
+ return luminance_scaled * kSdrWhiteNits;
+ }
+
float Bt2100YuvToLuminance(Color yuv_gamma, ColorTransformFn hdrInvOetf,
ColorTransformFn gamutConversionFn, ColorCalculationFn luminanceFn,
float scale_factor) {
@@ -402,6 +414,56 @@ TEST_F(GainMapMathTest, P3Luminance) {
EXPECT_FLOAT_EQ(p3Luminance(RgbBlue()), 0.06891f);
}
+TEST_F(GainMapMathTest, P3YuvToRgb) {
+ Color rgb_black = p3YuvToRgb(YuvBlack());
+ EXPECT_RGB_NEAR(rgb_black, RgbBlack());
+
+ Color rgb_white = p3YuvToRgb(YuvWhite());
+ EXPECT_RGB_NEAR(rgb_white, RgbWhite());
+
+ Color rgb_r = p3YuvToRgb(P3YuvRed());
+ EXPECT_RGB_NEAR(rgb_r, RgbRed());
+
+ Color rgb_g = p3YuvToRgb(P3YuvGreen());
+ EXPECT_RGB_NEAR(rgb_g, RgbGreen());
+
+ Color rgb_b = p3YuvToRgb(P3YuvBlue());
+ EXPECT_RGB_NEAR(rgb_b, RgbBlue());
+}
+
+TEST_F(GainMapMathTest, P3RgbToYuv) {
+ Color yuv_black = p3RgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv_black, YuvBlack());
+
+ Color yuv_white = p3RgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv_white, YuvWhite());
+
+ Color yuv_r = p3RgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv_r, P3YuvRed());
+
+ Color yuv_g = p3RgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv_g, P3YuvGreen());
+
+ Color yuv_b = p3RgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv_b, P3YuvBlue());
+}
+
+TEST_F(GainMapMathTest, P3RgbYuvRoundtrip) {
+ Color rgb_black = p3YuvToRgb(p3RgbToYuv(RgbBlack()));
+ EXPECT_RGB_NEAR(rgb_black, RgbBlack());
+
+ Color rgb_white = p3YuvToRgb(p3RgbToYuv(RgbWhite()));
+ EXPECT_RGB_NEAR(rgb_white, RgbWhite());
+
+ Color rgb_r = p3YuvToRgb(p3RgbToYuv(RgbRed()));
+ EXPECT_RGB_NEAR(rgb_r, RgbRed());
+
+ Color rgb_g = p3YuvToRgb(p3RgbToYuv(RgbGreen()));
+ EXPECT_RGB_NEAR(rgb_g, RgbGreen());
+
+ Color rgb_b = p3YuvToRgb(p3RgbToYuv(RgbBlue()));
+ EXPECT_RGB_NEAR(rgb_b, RgbBlue());
+}
TEST_F(GainMapMathTest, Bt2100Luminance) {
EXPECT_FLOAT_EQ(bt2100Luminance(RgbBlack()), 0.0f);
EXPECT_FLOAT_EQ(bt2100Luminance(RgbWhite()), 1.0f);
@@ -461,6 +523,163 @@ TEST_F(GainMapMathTest, Bt2100RgbYuvRoundtrip) {
EXPECT_RGB_NEAR(rgb_b, RgbBlue());
}
+TEST_F(GainMapMathTest, Bt709ToBt601YuvConversion) {
+ Color yuv_black = srgbRgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv709To601(yuv_black), YuvBlack());
+
+ Color yuv_white = srgbRgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv709To601(yuv_white), YuvWhite());
+
+ Color yuv_r = srgbRgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv709To601(yuv_r), P3YuvRed());
+
+ Color yuv_g = srgbRgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv709To601(yuv_g), P3YuvGreen());
+
+ Color yuv_b = srgbRgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv709To601(yuv_b), P3YuvBlue());
+}
+
+TEST_F(GainMapMathTest, Bt709ToBt2100YuvConversion) {
+ Color yuv_black = srgbRgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv709To2100(yuv_black), YuvBlack());
+
+ Color yuv_white = srgbRgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv709To2100(yuv_white), YuvWhite());
+
+ Color yuv_r = srgbRgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv709To2100(yuv_r), Bt2100YuvRed());
+
+ Color yuv_g = srgbRgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv709To2100(yuv_g), Bt2100YuvGreen());
+
+ Color yuv_b = srgbRgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv709To2100(yuv_b), Bt2100YuvBlue());
+}
+
+TEST_F(GainMapMathTest, Bt601ToBt709YuvConversion) {
+ Color yuv_black = p3RgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv601To709(yuv_black), YuvBlack());
+
+ Color yuv_white = p3RgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv601To709(yuv_white), YuvWhite());
+
+ Color yuv_r = p3RgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv601To709(yuv_r), SrgbYuvRed());
+
+ Color yuv_g = p3RgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv601To709(yuv_g), SrgbYuvGreen());
+
+ Color yuv_b = p3RgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv601To709(yuv_b), SrgbYuvBlue());
+}
+
+TEST_F(GainMapMathTest, Bt601ToBt2100YuvConversion) {
+ Color yuv_black = p3RgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv601To2100(yuv_black), YuvBlack());
+
+ Color yuv_white = p3RgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv601To2100(yuv_white), YuvWhite());
+
+ Color yuv_r = p3RgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv601To2100(yuv_r), Bt2100YuvRed());
+
+ Color yuv_g = p3RgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv601To2100(yuv_g), Bt2100YuvGreen());
+
+ Color yuv_b = p3RgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv601To2100(yuv_b), Bt2100YuvBlue());
+}
+
+TEST_F(GainMapMathTest, Bt2100ToBt709YuvConversion) {
+ Color yuv_black = bt2100RgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv2100To709(yuv_black), YuvBlack());
+
+ Color yuv_white = bt2100RgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv2100To709(yuv_white), YuvWhite());
+
+ Color yuv_r = bt2100RgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv2100To709(yuv_r), SrgbYuvRed());
+
+ Color yuv_g = bt2100RgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv2100To709(yuv_g), SrgbYuvGreen());
+
+ Color yuv_b = bt2100RgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv2100To709(yuv_b), SrgbYuvBlue());
+}
+
+TEST_F(GainMapMathTest, Bt2100ToBt601YuvConversion) {
+ Color yuv_black = bt2100RgbToYuv(RgbBlack());
+ EXPECT_YUV_NEAR(yuv2100To601(yuv_black), YuvBlack());
+
+ Color yuv_white = bt2100RgbToYuv(RgbWhite());
+ EXPECT_YUV_NEAR(yuv2100To601(yuv_white), YuvWhite());
+
+ Color yuv_r = bt2100RgbToYuv(RgbRed());
+ EXPECT_YUV_NEAR(yuv2100To601(yuv_r), P3YuvRed());
+
+ Color yuv_g = bt2100RgbToYuv(RgbGreen());
+ EXPECT_YUV_NEAR(yuv2100To601(yuv_g), P3YuvGreen());
+
+ Color yuv_b = bt2100RgbToYuv(RgbBlue());
+ EXPECT_YUV_NEAR(yuv2100To601(yuv_b), P3YuvBlue());
+}
+
+TEST_F(GainMapMathTest, TransformYuv420) {
+ ColorTransformFn transforms[] = { yuv709To601, yuv709To2100, yuv601To709, yuv601To2100,
+ yuv2100To709, yuv2100To601 };
+ for (const ColorTransformFn& transform : transforms) {
+ jpegr_uncompressed_struct input = Yuv420Image();
+
+ size_t out_buf_size = input.width * input.height * 3 / 2;
+ std::unique_ptr<uint8_t[]> out_buf = std::make_unique<uint8_t[]>(out_buf_size);
+ memcpy(out_buf.get(), input.data, out_buf_size);
+ jpegr_uncompressed_struct output = Yuv420Image();
+ output.data = out_buf.get();
+
+ transformYuv420(&output, 1, 1, transform);
+
+ for (size_t y = 0; y < 4; ++y) {
+ for (size_t x = 0; x < 4; ++x) {
+ // Skip the last chroma sample, which we modified above
+ if (x >= 2 && y >= 2) {
+ continue;
+ }
+
+ // All other pixels should remain unchanged
+ EXPECT_YUV_EQ(getYuv420Pixel(&input, x, y), getYuv420Pixel(&output, x, y));
+ }
+ }
+
+ // modified pixels should be updated as intended by the transformYuv420 algorithm
+ Color in1 = getYuv420Pixel(&input, 2, 2);
+ Color in2 = getYuv420Pixel(&input, 3, 2);
+ Color in3 = getYuv420Pixel(&input, 2, 3);
+ Color in4 = getYuv420Pixel(&input, 3, 3);
+ Color out1 = getYuv420Pixel(&output, 2, 2);
+ Color out2 = getYuv420Pixel(&output, 3, 2);
+ Color out3 = getYuv420Pixel(&output, 2, 3);
+ Color out4 = getYuv420Pixel(&output, 3, 3);
+
+ EXPECT_NEAR(transform(in1).y, out1.y, YuvConversionEpsilon());
+ EXPECT_NEAR(transform(in2).y, out2.y, YuvConversionEpsilon());
+ EXPECT_NEAR(transform(in3).y, out3.y, YuvConversionEpsilon());
+ EXPECT_NEAR(transform(in4).y, out4.y, YuvConversionEpsilon());
+
+ Color expect_uv = (transform(in1) + transform(in2) + transform(in3) + transform(in4)) / 4.0f;
+
+ EXPECT_NEAR(expect_uv.u, out1.u, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.u, out2.u, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.u, out3.u, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.u, out4.u, YuvConversionEpsilon());
+
+ EXPECT_NEAR(expect_uv.v, out1.v, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.v, out2.v, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.v, out3.v, YuvConversionEpsilon());
+ EXPECT_NEAR(expect_uv.v, out4.v, YuvConversionEpsilon());
+ }
+}
+
TEST_F(GainMapMathTest, HlgOetf) {
EXPECT_FLOAT_EQ(hlgOetf(0.0f), 0.0f);
EXPECT_NEAR(hlgOetf(0.04167f), 0.35357f, ComparisonEpsilon());
@@ -693,7 +912,7 @@ TEST_F(GainMapMathTest, ColorConversionLookup) {
TEST_F(GainMapMathTest, EncodeGain) {
ultrahdr_metadata_struct metadata = { .maxContentBoost = 4.0f,
- .minContentBoost = 1.0f / 4.0f };
+ .minContentBoost = 1.0f / 4.0f };
EXPECT_EQ(encodeGain(0.0f, 0.0f, &metadata), 127);
EXPECT_EQ(encodeGain(0.0f, 1.0f, &metadata), 127);
@@ -751,7 +970,7 @@ TEST_F(GainMapMathTest, EncodeGain) {
TEST_F(GainMapMathTest, ApplyGain) {
ultrahdr_metadata_struct metadata = { .maxContentBoost = 4.0f,
- .minContentBoost = 1.0f / 4.0f };
+ .minContentBoost = 1.0f / 4.0f };
float displayBoost = metadata.maxContentBoost;
EXPECT_RGB_NEAR(applyGain(RgbBlack(), 0.0f, &metadata), RgbBlack());
diff --git a/libs/ultrahdr/tests/icchelper_test.cpp b/libs/ultrahdr/tests/icchelper_test.cpp
new file mode 100644
index 0000000000..ff61c08574
--- /dev/null
+++ b/libs/ultrahdr/tests/icchelper_test.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2022 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 <gtest/gtest.h>
+#include <ultrahdr/icc.h>
+#include <ultrahdr/ultrahdr.h>
+#include <utils/Log.h>
+
+namespace android::ultrahdr {
+
+class IccHelperTest : public testing::Test {
+public:
+ IccHelperTest();
+ ~IccHelperTest();
+protected:
+ virtual void SetUp();
+ virtual void TearDown();
+};
+
+IccHelperTest::IccHelperTest() {}
+
+IccHelperTest::~IccHelperTest() {}
+
+void IccHelperTest::SetUp() {}
+
+void IccHelperTest::TearDown() {}
+
+TEST_F(IccHelperTest, iccWriteThenRead) {
+ sp<DataStruct> iccBt709 = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+ ULTRAHDR_COLORGAMUT_BT709);
+ ASSERT_NE(iccBt709->getLength(), 0);
+ ASSERT_NE(iccBt709->getData(), nullptr);
+ EXPECT_EQ(IccHelper::readIccColorGamut(iccBt709->getData(), iccBt709->getLength()),
+ ULTRAHDR_COLORGAMUT_BT709);
+
+ sp<DataStruct> iccP3 = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB, ULTRAHDR_COLORGAMUT_P3);
+ ASSERT_NE(iccP3->getLength(), 0);
+ ASSERT_NE(iccP3->getData(), nullptr);
+ EXPECT_EQ(IccHelper::readIccColorGamut(iccP3->getData(), iccP3->getLength()),
+ ULTRAHDR_COLORGAMUT_P3);
+
+ sp<DataStruct> iccBt2100 = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+ ULTRAHDR_COLORGAMUT_BT2100);
+ ASSERT_NE(iccBt2100->getLength(), 0);
+ ASSERT_NE(iccBt2100->getData(), nullptr);
+ EXPECT_EQ(IccHelper::readIccColorGamut(iccBt2100->getData(), iccBt2100->getLength()),
+ ULTRAHDR_COLORGAMUT_BT2100);
+}
+
+TEST_F(IccHelperTest, iccEndianness) {
+ sp<DataStruct> icc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB, ULTRAHDR_COLORGAMUT_BT709);
+ size_t profile_size = icc->getLength() - kICCIdentifierSize;
+
+ uint8_t* icc_bytes = reinterpret_cast<uint8_t*>(icc->getData()) + kICCIdentifierSize;
+ uint32_t encoded_size = static_cast<uint32_t>(icc_bytes[0]) << 24 |
+ static_cast<uint32_t>(icc_bytes[1]) << 16 |
+ static_cast<uint32_t>(icc_bytes[2]) << 8 |
+ static_cast<uint32_t>(icc_bytes[3]);
+
+ EXPECT_EQ(static_cast<size_t>(encoded_size), profile_size);
+}
+
+} // namespace android::ultrahdr
+
diff --git a/libs/ultrahdr/tests/jpegdecoderhelper_test.cpp b/libs/ultrahdr/tests/jpegdecoderhelper_test.cpp
index c79dbe328b..e2da01c373 100644
--- a/libs/ultrahdr/tests/jpegdecoderhelper_test.cpp
+++ b/libs/ultrahdr/tests/jpegdecoderhelper_test.cpp
@@ -15,6 +15,7 @@
*/
#include <ultrahdr/jpegdecoderhelper.h>
+#include <ultrahdr/icc.h>
#include <gtest/gtest.h>
#include <utils/Log.h>
@@ -22,11 +23,19 @@
namespace android::ultrahdr {
+// No ICC or EXIF
#define YUV_IMAGE "/sdcard/Documents/minnie-320x240-yuv.jpg"
#define YUV_IMAGE_SIZE 20193
+// Has ICC and EXIF
+#define YUV_ICC_IMAGE "/sdcard/Documents/minnie-320x240-yuv-icc.jpg"
+#define YUV_ICC_IMAGE_SIZE 34266
+// No ICC or EXIF
#define GREY_IMAGE "/sdcard/Documents/minnie-320x240-y.jpg"
#define GREY_IMAGE_SIZE 20193
+#define IMAGE_WIDTH 320
+#define IMAGE_HEIGHT 240
+
class JpegDecoderHelperTest : public testing::Test {
public:
struct Image {
@@ -39,7 +48,7 @@ protected:
virtual void SetUp();
virtual void TearDown();
- Image mYuvImage, mGreyImage;
+ Image mYuvImage, mYuvIccImage, mGreyImage;
};
JpegDecoderHelperTest::JpegDecoderHelperTest() {}
@@ -79,6 +88,10 @@ void JpegDecoderHelperTest::SetUp() {
FAIL() << "Load file " << YUV_IMAGE << " failed";
}
mYuvImage.size = YUV_IMAGE_SIZE;
+ if (!loadFile(YUV_ICC_IMAGE, &mYuvIccImage)) {
+ FAIL() << "Load file " << YUV_ICC_IMAGE << " failed";
+ }
+ mYuvIccImage.size = YUV_ICC_IMAGE_SIZE;
if (!loadFile(GREY_IMAGE, &mGreyImage)) {
FAIL() << "Load file " << GREY_IMAGE << " failed";
}
@@ -91,6 +104,16 @@ TEST_F(JpegDecoderHelperTest, decodeYuvImage) {
JpegDecoderHelper decoder;
EXPECT_TRUE(decoder.decompressImage(mYuvImage.buffer.get(), mYuvImage.size));
ASSERT_GT(decoder.getDecompressedImageSize(), static_cast<uint32_t>(0));
+ EXPECT_EQ(IccHelper::readIccColorGamut(decoder.getICCPtr(), decoder.getICCSize()),
+ ULTRAHDR_COLORGAMUT_UNSPECIFIED);
+}
+
+TEST_F(JpegDecoderHelperTest, decodeYuvIccImage) {
+ JpegDecoderHelper decoder;
+ EXPECT_TRUE(decoder.decompressImage(mYuvIccImage.buffer.get(), mYuvIccImage.size));
+ ASSERT_GT(decoder.getDecompressedImageSize(), static_cast<uint32_t>(0));
+ EXPECT_EQ(IccHelper::readIccColorGamut(decoder.getICCPtr(), decoder.getICCSize()),
+ ULTRAHDR_COLORGAMUT_BT709);
}
TEST_F(JpegDecoderHelperTest, decodeGreyImage) {
@@ -99,4 +122,35 @@ TEST_F(JpegDecoderHelperTest, decodeGreyImage) {
ASSERT_GT(decoder.getDecompressedImageSize(), static_cast<uint32_t>(0));
}
-} // namespace android::ultrahdr \ No newline at end of file
+TEST_F(JpegDecoderHelperTest, getCompressedImageParameters) {
+ size_t width = 0, height = 0;
+ std::vector<uint8_t> icc, exif;
+
+ JpegDecoderHelper decoder;
+ EXPECT_TRUE(decoder.getCompressedImageParameters(mYuvImage.buffer.get(), mYuvImage.size,
+ &width, &height, &icc, &exif));
+
+ EXPECT_EQ(width, IMAGE_WIDTH);
+ EXPECT_EQ(height, IMAGE_HEIGHT);
+ EXPECT_EQ(icc.size(), 0);
+ EXPECT_EQ(exif.size(), 0);
+}
+
+TEST_F(JpegDecoderHelperTest, getCompressedImageParametersIcc) {
+ size_t width = 0, height = 0;
+ std::vector<uint8_t> icc, exif;
+
+ JpegDecoderHelper decoder;
+ EXPECT_TRUE(decoder.getCompressedImageParameters(mYuvIccImage.buffer.get(), mYuvIccImage.size,
+ &width, &height, &icc, &exif));
+
+ EXPECT_EQ(width, IMAGE_WIDTH);
+ EXPECT_EQ(height, IMAGE_HEIGHT);
+ EXPECT_GT(icc.size(), 0);
+ EXPECT_GT(exif.size(), 0);
+
+ EXPECT_EQ(IccHelper::readIccColorGamut(icc.data(), icc.size()),
+ ULTRAHDR_COLORGAMUT_BT709);
+}
+
+} // namespace android::ultrahdr
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-12-30 18:30:04 +0000