| // Copyright 2023 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/graphics/display/lib/api-types-cpp/display-timing.h" |
| |
| #include <fidl/fuchsia.hardware.display/cpp/wire.h> |
| #include <fuchsia/hardware/display/controller/c/banjo.h> |
| |
| #include <cstdint> |
| |
| #include <gtest/gtest.h> |
| |
| namespace display { |
| |
| namespace { |
| |
| TEST(DisplayTiming, EqualityReflective) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kParam, kParam); |
| } |
| |
| TEST(DisplayTiming, EqualitySymmetric) { |
| constexpr DisplayTiming kParam1 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kParam1, kParam2); |
| EXPECT_EQ(kParam2, kParam1); |
| } |
| |
| TEST(DisplayTiming, EqualityTransitive) { |
| constexpr DisplayTiming kParam1 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr DisplayTiming kParam3 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kParam1, kParam2); |
| EXPECT_EQ(kParam2, kParam3); |
| EXPECT_EQ(kParam1, kParam3); |
| } |
| |
| TEST(DisplayTiming, NonEquality) { |
| constexpr DisplayTiming kParam1 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.horizontal_active_px = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.horizontal_front_porch_px = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.horizontal_sync_width_px = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.horizontal_back_porch_px = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vertical_active_lines = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vertical_front_porch_lines = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vertical_sync_width_lines = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vertical_back_porch_lines = 0xff'ff; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.pixel_clock_frequency_hz = 0x7f'7f'7f'7f'7f; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.fields_per_frame = FieldsPerFrame::kProgressive; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.hsync_polarity = SyncPolarity::kNegative; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vsync_polarity = SyncPolarity::kNegative; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.vblank_alternates = false; |
| EXPECT_NE(kParam, kParam1); |
| } |
| { |
| DisplayTiming kParam = kParam1; |
| kParam.pixel_repetition = 1; |
| EXPECT_NE(kParam, kParam1); |
| } |
| } |
| |
| TEST(DisplayTiming, FromBanjo) { |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_mode_t kBanjoDisplayMode = { |
| .pixel_clock_hz = 0x1f'1f'1f'1f'1f, |
| .h_addressable = 0x0f'0f, |
| .h_front_porch = 0x0a'0a, |
| .h_sync_pulse = 0x01'01, |
| .h_blanking = 0x0d'0d, |
| .v_addressable = 0x0b'0b, |
| .v_front_porch = 0x03'03, |
| .v_sync_pulse = 0x04'04, |
| .v_blanking = 0x0c'0c, |
| .flags = MODE_FLAG_INTERLACED | MODE_FLAG_HSYNC_POSITIVE | MODE_FLAG_VSYNC_POSITIVE | |
| MODE_FLAG_ALTERNATING_VBLANK, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplayMode)); |
| } |
| |
| // Verify Hsync / Vsync polarities are correctly mapped. |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_mode_t kBanjoDisplayMode = { |
| .pixel_clock_hz = 0x1f'1f'1f'1f'1f, |
| .h_addressable = 0x0f'0f, |
| .h_front_porch = 0x0a'0a, |
| .h_sync_pulse = 0x01'01, |
| .h_blanking = 0x0d'0d, |
| .v_addressable = 0x0b'0b, |
| .v_front_porch = 0x03'03, |
| .v_sync_pulse = 0x04'04, |
| .v_blanking = 0x0c'0c, |
| .flags = MODE_FLAG_INTERLACED | MODE_FLAG_HSYNC_POSITIVE | MODE_FLAG_ALTERNATING_VBLANK, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplayMode)); |
| } |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_mode_t kBanjoDisplayMode = { |
| .pixel_clock_hz = 0x1f'1f'1f'1f'1f, |
| .h_addressable = 0x0f'0f, |
| .h_front_porch = 0x0a'0a, |
| .h_sync_pulse = 0x01'01, |
| .h_blanking = 0x0d'0d, |
| .v_addressable = 0x0b'0b, |
| .v_front_porch = 0x03'03, |
| .v_sync_pulse = 0x04'04, |
| .v_blanking = 0x0c'0c, |
| .flags = MODE_FLAG_INTERLACED | MODE_FLAG_VSYNC_POSITIVE | MODE_FLAG_ALTERNATING_VBLANK, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplayMode)); |
| } |
| } |
| |
| TEST(DisplayTiming, ToBanjo) { |
| { |
| constexpr DisplayTiming kDisplayTiming = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| const display_mode_t kBanjoDisplayMode = ToBanjoDisplayMode(kDisplayTiming); |
| EXPECT_EQ(kBanjoDisplayMode.pixel_clock_hz, 0x1f'1f'1f'1f'1f); |
| EXPECT_EQ(kBanjoDisplayMode.h_addressable, 0x0f'0fu); |
| EXPECT_EQ(kBanjoDisplayMode.h_front_porch, 0x0a'0au); |
| EXPECT_EQ(kBanjoDisplayMode.h_sync_pulse, 0x01'01u); |
| EXPECT_EQ(kBanjoDisplayMode.h_blanking, 0x0d'0du); |
| EXPECT_EQ(kBanjoDisplayMode.v_addressable, 0x0b'0bu); |
| EXPECT_EQ(kBanjoDisplayMode.v_front_porch, 0x03'03u); |
| EXPECT_EQ(kBanjoDisplayMode.v_sync_pulse, 0x04'04u); |
| EXPECT_EQ(kBanjoDisplayMode.v_blanking, 0x0c'0cu); |
| EXPECT_EQ(kBanjoDisplayMode.flags, MODE_FLAG_INTERLACED | MODE_FLAG_HSYNC_POSITIVE | |
| MODE_FLAG_VSYNC_POSITIVE | MODE_FLAG_ALTERNATING_VBLANK); |
| } |
| |
| // Verify Hsync / Vsync polarities are correctly mapped. |
| { |
| constexpr DisplayTiming kDisplayTiming = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| const display_mode_t kBanjoDisplayMode = ToBanjoDisplayMode(kDisplayTiming); |
| EXPECT_EQ(kBanjoDisplayMode.flags, |
| MODE_FLAG_INTERLACED | MODE_FLAG_HSYNC_POSITIVE | MODE_FLAG_ALTERNATING_VBLANK); |
| } |
| { |
| constexpr DisplayTiming kDisplayTiming = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| const display_mode_t kBanjoDisplayMode = ToBanjoDisplayMode(kDisplayTiming); |
| EXPECT_EQ(kBanjoDisplayMode.flags, |
| MODE_FLAG_INTERLACED | MODE_FLAG_VSYNC_POSITIVE | MODE_FLAG_ALTERNATING_VBLANK); |
| } |
| } |
| |
| TEST(DisplayTiming, BanjoRoundTrip) { |
| constexpr DisplayTiming kDisplayTiming = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kDisplayTiming, ToDisplayTiming(ToBanjoDisplayMode(kDisplayTiming))); |
| } |
| |
| TEST(DisplayTiming, AggregateHelpers) { |
| constexpr DisplayTiming kDisplayTiming = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| // 0x0a'0a + 0x01'01 + 0x02'02 = 0x0d'0d |
| EXPECT_EQ(kDisplayTiming.horizontal_blank_px(), 0x0d'0d); |
| // 0x0f'0f + 0x0d'0d = 0x1c'1c |
| EXPECT_EQ(kDisplayTiming.horizontal_total_px(), 0x1c'1c); |
| // 0x03'03 + 0x04'04 + 0x05'05 = 0x0c'0c |
| EXPECT_EQ(kDisplayTiming.vertical_blank_lines(), 0x0c'0c); |
| // 0x0b'0b + 0x0c'0c = 0x17'17 |
| EXPECT_EQ(kDisplayTiming.vertical_total_lines(), 0x17'17); |
| } |
| |
| TEST(DisplayTiming, AggregateHelpersInterlaced) { |
| constexpr DisplayTiming kDisplayTimingWithoutAlternatingVblank = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| // 0x0a'0a + 0x01'01 + 0x02'02 = 0x0d'0d |
| EXPECT_EQ(kDisplayTimingWithoutAlternatingVblank.horizontal_blank_px(), 0x0d'0d); |
| // 0x0f'0f + 0x0d'0d = 0x1c'1c |
| EXPECT_EQ(kDisplayTimingWithoutAlternatingVblank.horizontal_total_px(), 0x1c'1c); |
| // 0x03'03 + 0x04'04 + 0x05'05 = 0x0c'0c |
| EXPECT_EQ(kDisplayTimingWithoutAlternatingVblank.vertical_blank_lines(), 0x0c'0c); |
| // 2 * 0x0c'0c + 0x0b'0b = 0x23'23 |
| EXPECT_EQ(kDisplayTimingWithoutAlternatingVblank.vertical_total_lines(), 0x23'23); |
| |
| constexpr DisplayTiming kDisplayTimingWithAlternatingVblank = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| |
| // 0x0a'0a + 0x01'01 + 0x02'02 = 0x0d'0d |
| EXPECT_EQ(kDisplayTimingWithAlternatingVblank.horizontal_blank_px(), 0x0d'0d); |
| // 0x0f'0f + 0x0d'0d = 0x1c'1c |
| EXPECT_EQ(kDisplayTimingWithAlternatingVblank.horizontal_total_px(), 0x1c'1c); |
| // 0x03'03 + 0x04'04 + 0x05'05 = 0x0c'0c |
| EXPECT_EQ(kDisplayTimingWithAlternatingVblank.vertical_blank_lines(), 0x0c'0c); |
| // 0x0c'0c + (0x0c'0c + 1) + 0x0b'0b = 0x23'24 |
| EXPECT_EQ(kDisplayTimingWithAlternatingVblank.vertical_total_lines(), 0x23'24); |
| } |
| |
| TEST(DisplayTimingIsValid, Valid) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_TRUE(kParam.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidHorizontalActive) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0xff'ff'ff, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = -1, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidHorizontalFrontPorch) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0xff'ff'ff, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = -1, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidHorizontalSyncWidth) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0xff'ff'ff, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = -1, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidHorizontalBackPorch) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0xff'ff'ff, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = -1, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidVerticalActive) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0xff'ff'ff, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = -1, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidVerticalFrontPorch) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0xff'ff'ff, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = -1, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidVerticalSyncWidth) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0xff'ff'ff, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = -1, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidVerticalBackPorch) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0xff'ff'ff, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = -1, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidPixelClockFrequencyKhz) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = -1, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidPixelRepetition) { |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 10, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| |
| constexpr DisplayTiming kParam2 = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = -1, |
| }; |
| EXPECT_FALSE(kParam2.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidHorizontalTotal) { |
| // All the atomic fields (horizontal_active_px, horizontal_front_porch_px, |
| // horizontal_sync_width_px and horizontal_back_porch_px) don't exceed their |
| // maximum allowed limits, but the horizontal total pixels (0x3bbb8) exceeds |
| // the maximum limit. |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0xee'ee, |
| .horizontal_front_porch_px = 0xee'ee, |
| .horizontal_sync_width_px = 0xee'ee, |
| .horizontal_back_porch_px = 0xee'ee, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| } |
| |
| TEST(DisplayTimingIsValid, InvalidVerticalTotal) { |
| // All the atomic fields (vertical_active_lines, vertical_front_porch_lines, |
| // vertical_sync_width_lines and vertical_back_porch_lines) don't exceed their |
| // maximum allowed limits, but the vertical total lines (0x3bbb8) exceeds |
| // the maximum limit. |
| constexpr DisplayTiming kParam = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0xee'ee, |
| .vertical_front_porch_lines = 0xee'ee, |
| .vertical_sync_width_lines = 0xee'ee, |
| .vertical_back_porch_lines = 0xee'ee, |
| .pixel_clock_frequency_hz = 0x1f'1f'1f'1f'1f, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_FALSE(kParam.IsValid()); |
| } |
| |
| TEST(DisplayTiming, RefreshRateProgressive) { |
| // DisplayTiming of the VESA DMT timing 0x02, which has progressive scanning |
| // and no repeating pixels. |
| constexpr DisplayTiming kDisplayTimingDmt0x02 = { |
| .horizontal_active_px = 640, |
| .horizontal_front_porch_px = 32, |
| .horizontal_sync_width_px = 64, |
| .horizontal_back_porch_px = 96, |
| .vertical_active_lines = 400, |
| .vertical_front_porch_lines = 1, |
| .vertical_sync_width_lines = 3, |
| .vertical_back_porch_lines = 41, |
| .pixel_clock_frequency_hz = 31'500'000, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kDisplayTimingDmt0x02.vertical_field_refresh_rate_millihertz(), int64_t{85'080}); |
| } |
| |
| TEST(DisplayTiming, RefreshRateProgressiveWithRepeatingPixels) { |
| // DisplayTiming of the CTA-861 timing for Video Identification Code 24, |
| // which has progressive scanning and horizontally repeating pixels. |
| constexpr DisplayTiming kDisplayTimingCta24 = { |
| .horizontal_active_px = 1440, |
| .horizontal_front_porch_px = 24, |
| .horizontal_sync_width_px = 126, |
| .horizontal_back_porch_px = 138, |
| .vertical_active_lines = 288, |
| .vertical_front_porch_lines = 2, |
| .vertical_sync_width_lines = 3, |
| .vertical_back_porch_lines = 19, |
| .pixel_clock_frequency_hz = 27'000'000, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 1, |
| }; |
| EXPECT_EQ(kDisplayTimingCta24.vertical_field_refresh_rate_millihertz(), int64_t{50'080}); |
| } |
| |
| TEST(DisplayTiming, RefreshRateInterlaced) { |
| // DisplayTiming of the CTA-861 timing for Video Identification Code 39, |
| // which has interlaced scanning and doesn't have alternating vertical blank |
| // lines or repeating pixels. |
| constexpr DisplayTiming kDisplayTimingCta39 = { |
| .horizontal_active_px = 1920, |
| .horizontal_front_porch_px = 32, |
| .horizontal_sync_width_px = 168, |
| .horizontal_back_porch_px = 184, |
| .vertical_active_lines = 1080, |
| .vertical_front_porch_lines = 23, |
| .vertical_sync_width_lines = 5, |
| .vertical_back_porch_lines = 57, |
| .pixel_clock_frequency_hz = 72'000'000, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kDisplayTimingCta39.vertical_field_refresh_rate_millihertz(), int64_t{50'000}); |
| } |
| |
| TEST(DisplayTiming, RefreshRateInterlacedWithAlternatingVblanks) { |
| // DisplayTiming of the VESA DMT timing 0x0f, which has interlaced scanning |
| // and alternating vertical blank lines. |
| constexpr DisplayTiming kDisplayTimingDmt0x0f = { |
| .horizontal_active_px = 1024, |
| .horizontal_front_porch_px = 8, |
| .horizontal_sync_width_px = 176, |
| .horizontal_back_porch_px = 56, |
| .vertical_active_lines = 768, |
| .vertical_front_porch_lines = 0, |
| .vertical_sync_width_lines = 4, |
| .vertical_back_porch_lines = 20, |
| .pixel_clock_frequency_hz = 44'900'000, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = true, |
| .pixel_repetition = 0, |
| }; |
| EXPECT_EQ(kDisplayTimingDmt0x0f.vertical_field_refresh_rate_millihertz(), int64_t{86'958}); |
| } |
| |
| // There's no VESA DMT or CTA-861 timing that is interlaced and has alternating |
| // vblanks but no repeating pixels. So we don't test refresh rate calculation |
| // using real timings for that case. |
| |
| TEST(DisplayTiming, RefreshRateInterlacedWithRepeatingPixelsAndAlternatingVblanks) { |
| // DisplayTiming of the CTA-861 timing for Video Identification Code 21, |
| // which has interlaced scanning, horizontally repeating pixels and |
| // alternating vertical blank lines. |
| constexpr DisplayTiming kDisplayTimingCta21 = { |
| .horizontal_active_px = 1440, |
| .horizontal_front_porch_px = 24, |
| .horizontal_sync_width_px = 126, |
| .horizontal_back_porch_px = 138, |
| .vertical_active_lines = 576, |
| .vertical_front_porch_lines = 2, |
| .vertical_sync_width_lines = 3, |
| .vertical_back_porch_lines = 19, |
| .pixel_clock_frequency_hz = 27'000'000, |
| .fields_per_frame = FieldsPerFrame::kInterlaced, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = true, |
| .pixel_repetition = 1, |
| }; |
| EXPECT_EQ(kDisplayTimingCta21.vertical_field_refresh_rate_millihertz(), int64_t{50'000}); |
| } |
| |
| TEST(DisplayTiming, FromBanjoDisplaySetting) { |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 98'765'000, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_setting_t kBanjoDisplaySetting = { |
| .lcd_clock = 98'765'000, |
| .h_active = 0x0f'0f, |
| .v_active = 0x0b'0b, |
| .h_period = 0x1c'1c, |
| .v_period = 0x17'17, |
| .hsync_width = 0x01'01, |
| .hsync_bp = 0x02'02, |
| .hsync_pol = true, |
| .vsync_width = 0x04'04, |
| .vsync_bp = 0x05'05, |
| .vsync_pol = true, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplaySetting)); |
| } |
| |
| // Verify Hsync / Vsync polarities are correctly mapped. |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 98'765'000, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kPositive, |
| .vsync_polarity = SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_setting_t kBanjoDisplaySetting = { |
| .lcd_clock = 98'765'000, |
| .h_active = 0x0f'0f, |
| .v_active = 0x0b'0b, |
| .h_period = 0x1c'1c, |
| .v_period = 0x17'17, |
| .hsync_width = 0x01'01, |
| .hsync_bp = 0x02'02, |
| .hsync_pol = true, |
| .vsync_width = 0x04'04, |
| .vsync_bp = 0x05'05, |
| .vsync_pol = false, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplaySetting)); |
| } |
| { |
| constexpr DisplayTiming kExpected = { |
| .horizontal_active_px = 0x0f'0f, |
| .horizontal_front_porch_px = 0x0a'0a, |
| .horizontal_sync_width_px = 0x01'01, |
| .horizontal_back_porch_px = 0x02'02, |
| .vertical_active_lines = 0x0b'0b, |
| .vertical_front_porch_lines = 0x03'03, |
| .vertical_sync_width_lines = 0x04'04, |
| .vertical_back_porch_lines = 0x05'05, |
| .pixel_clock_frequency_hz = 98'765'000, |
| .fields_per_frame = FieldsPerFrame::kProgressive, |
| .hsync_polarity = SyncPolarity::kNegative, |
| .vsync_polarity = SyncPolarity::kPositive, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| constexpr display_setting_t kBanjoDisplaySetting = { |
| .lcd_clock = 98'765'000, |
| .h_active = 0x0f'0f, |
| .v_active = 0x0b'0b, |
| .h_period = 0x1c'1c, |
| .v_period = 0x17'17, |
| .hsync_width = 0x01'01, |
| .hsync_bp = 0x02'02, |
| .hsync_pol = false, |
| .vsync_width = 0x04'04, |
| .vsync_bp = 0x05'05, |
| .vsync_pol = true, |
| }; |
| EXPECT_EQ(kExpected, ToDisplayTiming(kBanjoDisplaySetting)); |
| } |
| } |
| |
| } // namespace |
| |
| } // namespace display |
