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Unified Diff: chromeos/display/output_util.cc

Issue 192483007: Move chromeos/display/* to ui/display/chromeos (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Include display.gyp into ChromeOS builds only Created 6 years, 9 months ago
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Index: chromeos/display/output_util.cc
diff --git a/chromeos/display/output_util.cc b/chromeos/display/output_util.cc
deleted file mode 100644
index a1485b4d28dc1024d3616be33c64b878e17503d3..0000000000000000000000000000000000000000
--- a/chromeos/display/output_util.cc
+++ /dev/null
@@ -1,176 +0,0 @@
-// Copyright (c) 2013 The Chromium 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 "chromeos/display/output_util.h"
-
-#include <X11/extensions/Xrandr.h>
-#include <X11/Xatom.h>
-#include <X11/Xlib.h>
-
-#include "base/strings/string_util.h"
-#include "base/x11/edid_parser_x11.h"
-
-namespace chromeos {
-namespace {
-
-// Prefixes for the built-in displays.
-const char kInternal_LVDS[] = "LVDS";
-const char kInternal_eDP[] = "eDP";
-const char kInternal_DSI[] = "DSI";
-
-// Gets some useful data from the specified output device, such like
-// manufacturer's ID, product code, and human readable name. Returns false if it
-// fails to get those data and doesn't touch manufacturer ID/product code/name.
-// NULL can be passed for unwanted output parameters.
-bool GetOutputDeviceData(XID output,
- uint16* manufacturer_id,
- std::string* human_readable_name) {
- unsigned long nitems = 0;
- unsigned char *prop = NULL;
- if (!base::GetEDIDProperty(output, &nitems, &prop))
- return false;
-
- bool result = base::ParseOutputDeviceData(
- prop, nitems, manufacturer_id, human_readable_name);
- XFree(prop);
- return result;
-}
-
-} // namespace
-
-std::string GetDisplayName(XID output_id) {
- std::string display_name;
- GetOutputDeviceData(output_id, NULL, &display_name);
- return display_name;
-}
-
-bool GetOutputOverscanFlag(XID output, bool* flag) {
- unsigned long nitems = 0;
- unsigned char *prop = NULL;
- if (!base::GetEDIDProperty(output, &nitems, &prop))
- return false;
-
- bool found = ParseOutputOverscanFlag(prop, nitems, flag);
- XFree(prop);
- return found;
-}
-
-bool ParseOutputOverscanFlag(const unsigned char* prop,
- unsigned long nitems,
- bool *flag) {
- // See http://en.wikipedia.org/wiki/Extended_display_identification_data
- // for the extension format of EDID. Also see EIA/CEA-861 spec for
- // the format of the extensions and how video capability is encoded.
- // - byte 0: tag. should be 02h.
- // - byte 1: revision. only cares revision 3 (03h).
- // - byte 4-: data block.
- const unsigned int kExtensionBase = 128;
- const unsigned int kExtensionSize = 128;
- const unsigned int kNumExtensionsOffset = 126;
- const unsigned int kDataBlockOffset = 4;
- const unsigned char kCEAExtensionTag = '\x02';
- const unsigned char kExpectedExtensionRevision = '\x03';
- const unsigned char kExtendedTag = 7;
- const unsigned char kExtendedVideoCapabilityTag = 0;
- const unsigned int kPTOverscan = 4;
- const unsigned int kITOverscan = 2;
- const unsigned int kCEOverscan = 0;
-
- if (nitems <= kNumExtensionsOffset)
- return false;
-
- unsigned char num_extensions = prop[kNumExtensionsOffset];
-
- for (size_t i = 0; i < num_extensions; ++i) {
- // Skip parsing the whole extension if size is not enough.
- if (nitems < kExtensionBase + (i + 1) * kExtensionSize)
- break;
-
- const unsigned char* extension = prop + kExtensionBase + i * kExtensionSize;
- unsigned char tag = extension[0];
- unsigned char revision = extension[1];
- if (tag != kCEAExtensionTag || revision != kExpectedExtensionRevision)
- continue;
-
- unsigned char timing_descriptors_start =
- std::min(extension[2], static_cast<unsigned char>(kExtensionSize));
- const unsigned char* data_block = extension + kDataBlockOffset;
- while (data_block < extension + timing_descriptors_start) {
- // A data block is encoded as:
- // - byte 1 high 3 bits: tag. '07' for extended tags.
- // - byte 1 remaining bits: the length of data block.
- // - byte 2: the extended tag. '0' for video capability.
- // - byte 3: the capability.
- unsigned char tag = data_block[0] >> 5;
- unsigned char payload_length = data_block[0] & 0x1f;
- if (static_cast<unsigned long>(data_block + payload_length - prop) >
- nitems)
- break;
-
- if (tag != kExtendedTag || payload_length < 2) {
- data_block += payload_length + 1;
- continue;
- }
-
- unsigned char extended_tag_code = data_block[1];
- if (extended_tag_code != kExtendedVideoCapabilityTag) {
- data_block += payload_length + 1;
- continue;
- }
-
- // The difference between preferred, IT, and CE video formats
- // doesn't matter. Sets |flag| to true if any of these flags are true.
- if ((data_block[2] & (1 << kPTOverscan)) ||
- (data_block[2] & (1 << kITOverscan)) ||
- (data_block[2] & (1 << kCEOverscan))) {
- *flag = true;
- } else {
- *flag = false;
- }
- return true;
- }
- }
-
- return false;
-}
-
-bool IsInternalOutputName(const std::string& name) {
- return name.find(kInternal_LVDS) == 0 || name.find(kInternal_eDP) == 0 ||
- name.find(kInternal_DSI) == 0;
-}
-
-const XRRModeInfo* FindXRRModeInfo(const XRRScreenResources* screen_resources,
- XID current_mode) {
- for (int m = 0; m < screen_resources->nmode; m++) {
- XRRModeInfo *mode = &screen_resources->modes[m];
- if (mode->id == current_mode)
- return mode;
- }
- return NULL;
-}
-
-namespace test {
-
-XRRModeInfo CreateModeInfo(int id,
- int width,
- int height,
- bool interlaced,
- float refresh_rate) {
- XRRModeInfo mode_info = {0};
- mode_info.id = id;
- mode_info.width = width;
- mode_info.height = height;
- if (interlaced)
- mode_info.modeFlags = RR_Interlace;
- if (refresh_rate != 0.0f) {
- mode_info.hTotal = 1;
- mode_info.vTotal = 1;
- mode_info.dotClock = refresh_rate;
- }
- return mode_info;
-}
-
-} // namespace test
-
-} // namespace chromeos
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