Add graphics composer support for HWC > HWC1.1 (0d55a210) · Commits · e / os / android_hardware_interfaces

graphics/composer/2.1/default/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -37,6 +37,7 @@ cc_library_shared {
		"liblog",
		"libsync",
		"libutils",
		"libhwc2on1adapter"
		],
		}

graphics/composer/2.1/default/Hwc.cpp

+31 −6

Original line number	Diff line number	Diff line
		@@ -22,6 +22,8 @@

		#include "ComposerClient.h"
		#include "Hwc.h"
		#include "hardware/hwcomposer.h"
		#include "hwc2on1adapter/HWC2On1Adapter.h"

		namespace android {
		namespace hardware {
		@@ -30,13 +32,36 @@ namespace composer {
		namespace V2_1 {
		namespace implementation {


		HwcHal::HwcHal(const hw_module_t* module)
		: mDevice(nullptr), mDispatch()
		{
		int status = hwc2_open(module, &mDevice);
		if (status) {
		LOG_ALWAYS_FATAL("failed to open hwcomposer2 device: %s",
		strerror(-status));
		: mDevice(nullptr), mDispatch(), mAdapter()
		{
		// Determine what kind of module is available (HWC2 vs HWC1.X).
		hw_device_t* device = nullptr;
		int error = module->methods->open(module, HWC_HARDWARE_COMPOSER, &device);
		if (error != 0) {
		ALOGE("Failed to open HWC device (%s), aborting", strerror(-error));
		abort();
		}
		uint32_t majorVersion = (device->version >> 24) & 0xF;

		// If we don't have a HWC2, we need to wrap whatever we have in an adapter.
		if (majorVersion != 2) {
		uint32_t minorVersion = device->version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK;
		minorVersion = (minorVersion >> 16) & 0xF;
		ALOGI("Found HWC implementation v%d.%d", majorVersion, minorVersion);
		if (minorVersion < 1) {
		ALOGE("Cannot adapt to HWC version %d.%d. Minimum supported is 1.1",
		majorVersion, minorVersion);
		abort();
		}
		mAdapter = std::make_unique<HWC2On1Adapter>(
		reinterpret_cast<hwc_composer_device_1*>(device));

		// Place the adapter in front of the device module.
		mDevice = mAdapter.get();
		} else {
		mDevice = reinterpret_cast<hwc2_device_t*>(device);
		}

		initCapabilities();

graphics/composer/2.1/default/Hwc.h

+13 −1

Original line number	Diff line number	Diff line
		@@ -18,14 +18,22 @@
		#define ANDROID_HARDWARE_GRAPHICS_COMPOSER_V2_1_HWC_H

		#include <mutex>
		#include <memory>
		#include <unordered_set>
		#include <vector>

		#include <android/hardware/graphics/composer/2.1/IComposer.h>
		#define HWC2_INCLUDE_STRINGIFICATION
		#define HWC2_USE_CPP11
		#include <hardware/hwcomposer2.h>

		#undef HWC2_INCLUDE_STRINGIFICATION
		#undef HWC2_USE_CPP11
		#include "ComposerBase.h"

		namespace android {
		class HWC2On1Adapter;
		}

		namespace android {
		namespace hardware {
		namespace graphics {
		@@ -204,6 +212,10 @@ private:

		std::mutex mClientMutex;
		wp<ComposerClient> mClient;

		// If the HWC implementation version is < 2.0, use an adapter to interface
		// between HWC 2.0 <-> HWC 1.X.
		std::unique_ptr<HWC2On1Adapter> mAdapter;
		};

		extern "C" IComposer* HIDL_FETCH_IComposer(const char* name);