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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/filters/h264_parser.h" | 5 #include "media/filters/h264_parser.h" |
6 | 6 |
7 #include <limits> | 7 #include <limits> |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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114 coded_size->height() - crop_top <= crop_bottom) { | 114 coded_size->height() - crop_top <= crop_bottom) { |
115 DVLOG(1) << "Frame cropping excludes entire frame."; | 115 DVLOG(1) << "Frame cropping excludes entire frame."; |
116 return base::nullopt; | 116 return base::nullopt; |
117 } | 117 } |
118 | 118 |
119 return gfx::Rect(crop_left, crop_top, | 119 return gfx::Rect(crop_left, crop_top, |
120 coded_size->width() - crop_left - crop_right, | 120 coded_size->width() - crop_left - crop_right, |
121 coded_size->height() - crop_top - crop_bottom); | 121 coded_size->height() - crop_top - crop_bottom); |
122 } | 122 } |
123 | 123 |
124 // Based on T-REC-H.264 E.2.1, "VUI parameters semantics", | |
125 // available from http://www.itu.int/rec/T-REC-H.264. | |
126 gfx::ColorSpace H264SPS::GetColorSpace() const { | |
127 if (colour_description_present_flag) { | |
128 return gfx::ColorSpace( | |
129 colour_primaries, transfer_characteristics, matrix_coefficients, | |
130 video_full_range_flag ? gfx::ColorSpace::RangeID::FULL | |
131 : gfx::ColorSpace::RangeID::LIMITED); | |
132 } else { | |
133 return gfx::ColorSpace(gfx::ColorSpace::PrimaryID::UNSPECIFIED, | |
134 gfx::ColorSpace::TransferID::UNSPECIFIED, | |
135 gfx::ColorSpace::MatrixID::UNSPECIFIED, | |
136 video_full_range_flag | |
137 ? gfx::ColorSpace::RangeID::FULL | |
138 : gfx::ColorSpace::RangeID::LIMITED); | |
139 } | |
140 } | |
141 | |
142 H264PPS::H264PPS() { | 124 H264PPS::H264PPS() { |
143 memset(this, 0, sizeof(*this)); | 125 memset(this, 0, sizeof(*this)); |
144 } | 126 } |
145 | 127 |
146 H264SliceHeader::H264SliceHeader() { | 128 H264SliceHeader::H264SliceHeader() { |
147 memset(this, 0, sizeof(*this)); | 129 memset(this, 0, sizeof(*this)); |
148 } | 130 } |
149 | 131 |
150 H264SEIMessage::H264SEIMessage() { | 132 H264SEIMessage::H264SEIMessage() { |
151 memset(this, 0, sizeof(*this)); | 133 memset(this, 0, sizeof(*this)); |
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824 sps->sar_height = kTableSarHeight[aspect_ratio_idc]; | 806 sps->sar_height = kTableSarHeight[aspect_ratio_idc]; |
825 } | 807 } |
826 } | 808 } |
827 | 809 |
828 int data; | 810 int data; |
829 // Read and ignore overscan and video signal type info. | 811 // Read and ignore overscan and video signal type info. |
830 READ_BOOL_OR_RETURN(&data); // overscan_info_present_flag | 812 READ_BOOL_OR_RETURN(&data); // overscan_info_present_flag |
831 if (data) | 813 if (data) |
832 READ_BOOL_OR_RETURN(&data); // overscan_appropriate_flag | 814 READ_BOOL_OR_RETURN(&data); // overscan_appropriate_flag |
833 | 815 |
834 READ_BOOL_OR_RETURN(&sps->video_signal_type_present_flag); | 816 READ_BOOL_OR_RETURN(&data); // video_signal_type_present_flag |
835 if (sps->video_signal_type_present_flag) { | 817 if (data) { |
836 READ_BITS_OR_RETURN(3, &sps->video_format); | 818 READ_BITS_OR_RETURN(3, &data); // video_format |
837 READ_BOOL_OR_RETURN(&sps->video_full_range_flag); | 819 READ_BOOL_OR_RETURN(&data); // video_full_range_flag |
838 READ_BOOL_OR_RETURN(&sps->colour_description_present_flag); | 820 READ_BOOL_OR_RETURN(&data); // colour_description_present_flag |
839 if (sps->colour_description_present_flag) { | 821 if (data) |
840 // color description syntax elements | 822 READ_BITS_OR_RETURN(24, &data); // color description syntax elements |
841 READ_BITS_OR_RETURN(8, &sps->colour_primaries); | |
842 READ_BITS_OR_RETURN(8, &sps->transfer_characteristics); | |
843 READ_BITS_OR_RETURN(8, &sps->matrix_coefficients); | |
844 } | |
845 } | 823 } |
846 | 824 |
847 READ_BOOL_OR_RETURN(&data); // chroma_loc_info_present_flag | 825 READ_BOOL_OR_RETURN(&data); // chroma_loc_info_present_flag |
848 if (data) { | 826 if (data) { |
849 READ_UE_OR_RETURN(&data); // chroma_sample_loc_type_top_field | 827 READ_UE_OR_RETURN(&data); // chroma_sample_loc_type_top_field |
850 READ_UE_OR_RETURN(&data); // chroma_sample_loc_type_bottom_field | 828 READ_UE_OR_RETURN(&data); // chroma_sample_loc_type_bottom_field |
851 } | 829 } |
852 | 830 |
853 // Read and ignore timing info. | 831 // Read and ignore timing info. |
854 READ_BOOL_OR_RETURN(&data); // timing_info_present_flag | 832 READ_BOOL_OR_RETURN(&data); // timing_info_present_flag |
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1475 | 1453 |
1476 default: | 1454 default: |
1477 DVLOG(4) << "Unsupported SEI message"; | 1455 DVLOG(4) << "Unsupported SEI message"; |
1478 break; | 1456 break; |
1479 } | 1457 } |
1480 | 1458 |
1481 return kOk; | 1459 return kOk; |
1482 } | 1460 } |
1483 | 1461 |
1484 } // namespace media | 1462 } // namespace media |
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