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Diffstat (limited to 'third_party/libwebm/common/hdr_util.cc')
| -rw-r--r-- | third_party/libwebm/common/hdr_util.cc | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/third_party/libwebm/common/hdr_util.cc b/third_party/libwebm/common/hdr_util.cc new file mode 100644 index 000000000..e1a9842fb --- /dev/null +++ b/third_party/libwebm/common/hdr_util.cc @@ -0,0 +1,182 @@ +// Copyright (c) 2016 The WebM project authors. All Rights Reserved. +// +// Use of this source code is governed by a BSD-style license +// that can be found in the LICENSE file in the root of the source +// tree. An additional intellectual property rights grant can be found +// in the file PATENTS. All contributing project authors may +// be found in the AUTHORS file in the root of the source tree. +#include "hdr_util.h" + +#include <cstddef> +#include <new> + +#include "mkvparser/mkvparser.h" + +namespace libwebm { +bool CopyPrimaryChromaticity(const mkvparser::PrimaryChromaticity& parser_pc, + PrimaryChromaticityPtr* muxer_pc) { + muxer_pc->reset(new (std::nothrow) + mkvmuxer::PrimaryChromaticity(parser_pc.x, parser_pc.y)); + if (!muxer_pc->get()) + return false; + return true; +} + +bool MasteringMetadataValuePresent(double value) { + return value != mkvparser::MasteringMetadata::kValueNotPresent; +} + +bool CopyMasteringMetadata(const mkvparser::MasteringMetadata& parser_mm, + mkvmuxer::MasteringMetadata* muxer_mm) { + if (MasteringMetadataValuePresent(parser_mm.luminance_max)) + muxer_mm->luminance_max = parser_mm.luminance_max; + if (MasteringMetadataValuePresent(parser_mm.luminance_min)) + muxer_mm->luminance_min = parser_mm.luminance_min; + + PrimaryChromaticityPtr r_ptr(NULL); + PrimaryChromaticityPtr g_ptr(NULL); + PrimaryChromaticityPtr b_ptr(NULL); + PrimaryChromaticityPtr wp_ptr(NULL); + + if (parser_mm.r) { + if (!CopyPrimaryChromaticity(*parser_mm.r, &r_ptr)) + return false; + } + if (parser_mm.g) { + if (!CopyPrimaryChromaticity(*parser_mm.g, &g_ptr)) + return false; + } + if (parser_mm.b) { + if (!CopyPrimaryChromaticity(*parser_mm.b, &b_ptr)) + return false; + } + if (parser_mm.white_point) { + if (!CopyPrimaryChromaticity(*parser_mm.white_point, &wp_ptr)) + return false; + } + + if (!muxer_mm->SetChromaticity(r_ptr.get(), g_ptr.get(), b_ptr.get(), + wp_ptr.get())) { + return false; + } + + return true; +} + +bool ColourValuePresent(long long value) { + return value != mkvparser::Colour::kValueNotPresent; +} + +bool CopyColour(const mkvparser::Colour& parser_colour, + mkvmuxer::Colour* muxer_colour) { + if (!muxer_colour) + return false; + + if (ColourValuePresent(parser_colour.matrix_coefficients)) + muxer_colour->matrix_coefficients = parser_colour.matrix_coefficients; + if (ColourValuePresent(parser_colour.bits_per_channel)) + muxer_colour->bits_per_channel = parser_colour.bits_per_channel; + if (ColourValuePresent(parser_colour.chroma_subsampling_horz)) + muxer_colour->chroma_subsampling_horz = + parser_colour.chroma_subsampling_horz; + if (ColourValuePresent(parser_colour.chroma_subsampling_vert)) + muxer_colour->chroma_subsampling_vert = + parser_colour.chroma_subsampling_vert; + if (ColourValuePresent(parser_colour.cb_subsampling_horz)) + muxer_colour->cb_subsampling_horz = parser_colour.cb_subsampling_horz; + if (ColourValuePresent(parser_colour.cb_subsampling_vert)) + muxer_colour->cb_subsampling_vert = parser_colour.cb_subsampling_vert; + if (ColourValuePresent(parser_colour.chroma_siting_horz)) + muxer_colour->chroma_siting_horz = parser_colour.chroma_siting_horz; + if (ColourValuePresent(parser_colour.chroma_siting_vert)) + muxer_colour->chroma_siting_vert = parser_colour.chroma_siting_vert; + if (ColourValuePresent(parser_colour.range)) + muxer_colour->range = parser_colour.range; + if (ColourValuePresent(parser_colour.transfer_characteristics)) + muxer_colour->transfer_characteristics = + parser_colour.transfer_characteristics; + if (ColourValuePresent(parser_colour.primaries)) + muxer_colour->primaries = parser_colour.primaries; + if (ColourValuePresent(parser_colour.max_cll)) + muxer_colour->max_cll = parser_colour.max_cll; + if (ColourValuePresent(parser_colour.max_fall)) + muxer_colour->max_fall = parser_colour.max_fall; + + if (parser_colour.mastering_metadata) { + mkvmuxer::MasteringMetadata muxer_mm; + if (!CopyMasteringMetadata(*parser_colour.mastering_metadata, &muxer_mm)) + return false; + if (!muxer_colour->SetMasteringMetadata(muxer_mm)) + return false; + } + return true; +} + +// Format of VPx private data: +// +// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// | ID Byte | Length | | +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | +// | | +// : Bytes 1..Length of Codec Feature : +// | | +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// +// ID Byte Format +// ID byte is an unsigned byte. +// 0 1 2 3 4 5 6 7 +// +-+-+-+-+-+-+-+-+ +// |X| ID | +// +-+-+-+-+-+-+-+-+ +// +// The X bit is reserved. +// +// Currently only profile level is supported. ID byte must be set to 1, and +// length must be 1. Supported values are: +// +// 10: Level 1 +// 11: Level 1.1 +// 20: Level 2 +// 21: Level 2.1 +// 30: Level 3 +// 31: Level 3.1 +// 40: Level 4 +// 41: Level 4.1 +// 50: Level 5 +// 51: Level 5.1 +// 52: Level 5.2 +// 60: Level 6 +// 61: Level 6.1 +// 62: Level 6.2 +// +// See the following link for more information: +// http://www.webmproject.org/vp9/profiles/ +int ParseVpxCodecPrivate(const uint8_t* private_data, int32_t length) { + const int kVpxCodecPrivateLength = 3; + if (!private_data || length != kVpxCodecPrivateLength) + return 0; + + const uint8_t id_byte = *private_data; + if (id_byte != 1) + return 0; + + const int kVpxProfileLength = 1; + const uint8_t length_byte = private_data[1]; + if (length_byte != kVpxProfileLength) + return 0; + + const int level = static_cast<int>(private_data[2]); + + const int kNumLevels = 14; + const int levels[kNumLevels] = {10, 11, 20, 21, 30, 31, 40, + 41, 50, 51, 52, 60, 61, 62}; + + for (int i = 0; i < kNumLevels; ++i) { + if (level == levels[i]) + return level; + } + + return 0; +} +} // namespace libwebm |