am 4635df34: Merge "add libadfhwc" (b11ab0f4) · Commits · e / os / android_system_core

adf/libadfhwc/Android.mk

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		# Copyright (C) 2013 The Android Open Source Project
		#
		# Licensed under the Apache License, Version 2.0 (the "License");
		# you may not use this file except in compliance with the License.
		# You may obtain a copy of the License at
		#
		# http://www.apache.org/licenses/LICENSE-2.0
		#
		# Unless required by applicable law or agreed to in writing, software
		# distributed under the License is distributed on an "AS IS" BASIS,
		# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		# See the License for the specific language governing permissions and
		# limitations under the License.

		LOCAL_PATH:= $(call my-dir)

		include $(CLEAR_VARS)
		LOCAL_SRC_FILES := adfhwc.cpp
		LOCAL_MODULE := libadfhwc
		LOCAL_MODULE_TAGS := optional
		LOCAL_STATIC_LIBRARIES := libadf liblog libutils
		LOCAL_CFLAGS += -DLOG_TAG=\"adfhwc\"
		LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
		LOCAL_C_INCLUDES += $(LOCAL_EXPORT_C_INCLUDE_DIRS)
		include $(BUILD_STATIC_LIBRARY)

adf/libadfhwc/adfhwc.cpp

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		/*
		* Copyright (C) 2013 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#include <fcntl.h>
		#include <poll.h>
		#include <pthread.h>
		#include <sys/resource.h>

		#include <adf/adf.h>
		#include <adfhwc/adfhwc.h>

		#include <cutils/log.h>
		#include <utils/Vector.h>

		struct adf_hwc_helper {
		adf_hwc_event_callbacks const *event_cb;
		void *event_cb_data;

		pthread_t event_thread;

		android::Vector<int> intf_fds;
		android::Vector<drm_mode_modeinfo> display_configs;
		};

		template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; }

		int adf_eventControl(struct adf_hwc_helper *dev, int disp, int event,
		int enabled)
		{
		if (enabled != !!enabled)
		return -EINVAL;

		if ((size_t)disp >= dev->intf_fds.size())
		return -EINVAL;

		switch (event) {
		case HWC_EVENT_VSYNC:
		return adf_set_event(dev->intf_fds[disp], ADF_EVENT_VSYNC, enabled);
		}

		return -EINVAL;
		}

		static inline int32_t dpi(uint16_t res, uint16_t size_mm)
		{
		if (size_mm)
		return 1000 * (res * 25.4f) / size_mm;
		return 0;
		}

		int adf_blank(struct adf_hwc_helper *dev, int disp, int blank)
		{
		if ((size_t)disp >= dev->intf_fds.size())
		return -EINVAL;

		uint8_t dpms_mode = blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON;
		return adf_interface_blank(dev->intf_fds[disp], dpms_mode);
		}

		int adf_query_display_types_supported(struct adf_hwc_helper dev, int value)
		{
		*value = 0;
		if (dev->intf_fds.size() > 0)
		*value \|= HWC_DISPLAY_PRIMARY_BIT;
		if (dev->intf_fds.size() > 1)
		*value \|= HWC_DISPLAY_EXTERNAL_BIT;

		return 0;
		}

		int adf_getDisplayConfigs(struct adf_hwc_helper *dev, int disp,
		uint32_t configs, size_t numConfigs)
		{
		if ((size_t)disp >= dev->intf_fds.size())
		return -EINVAL;

		adf_interface_data data;
		int err = adf_get_interface_data(dev->intf_fds[disp], &data);
		if (err < 0) {
		ALOGE("failed to get ADF interface data: %s", strerror(err));
		return err;
		}

		if (!data.hotplug_detect)
		return -ENODEV;

		android::Vector<drm_mode_modeinfo *> unique_configs;
		unique_configs.push_back(&data.current_mode);
		for (size_t i = 0; i < data.n_available_modes; i++)
		if (memcmp(&data.available_modes[i], &data.current_mode,
		sizeof(data.current_mode)))
		unique_configs.push_back(&data.available_modes[i]);

		for (size_t i = 0; i < min(*numConfigs, unique_configs.size()); i++) {
		configs[i] = dev->display_configs.size();
		dev->display_configs.push_back(*unique_configs[i]);
		}
		*numConfigs = unique_configs.size();

		adf_free_interface_data(&data);
		return 0;
		}

		static int32_t adf_display_attribute(const adf_interface_data &data,
		const drm_mode_modeinfo &mode, const uint32_t attribute)
		{
		switch (attribute) {
		case HWC_DISPLAY_VSYNC_PERIOD:
		if (mode.vrefresh)
		return 1000000000 / mode.vrefresh;
		return 0;

		case HWC_DISPLAY_WIDTH:
		return mode.hdisplay;

		case HWC_DISPLAY_HEIGHT:
		return mode.vdisplay;

		case HWC_DISPLAY_DPI_X:
		return dpi(mode.hdisplay, data.width_mm);

		case HWC_DISPLAY_DPI_Y:
		return dpi(mode.vdisplay, data.height_mm);

		default:
		ALOGE("unknown display attribute %u", attribute);
		return -EINVAL;
		}
		}

		int adf_getDisplayAttributes(struct adf_hwc_helper *dev, int disp,
		uint32_t config, const uint32_t attributes, int32_t values)
		{
		if ((size_t)disp >= dev->intf_fds.size())
		return -EINVAL;

		if (config >= dev->display_configs.size())
		return -EINVAL;

		adf_interface_data data;
		int err = adf_get_interface_data(dev->intf_fds[disp], &data);
		if (err < 0) {
		ALOGE("failed to get ADF interface data: %s", strerror(err));
		return err;
		}

		for (int i = 0; attributes[i] != HWC_DISPLAY_NO_ATTRIBUTE; i++)
		values[i] = adf_display_attribute(data, dev->display_configs[config],
		attributes[i]);

		adf_free_interface_data(&data);
		return 0;
		}

		static void handle_adf_event(struct adf_hwc_helper *dev, int disp)
		{
		adf_event *event;
		int err = adf_read_event(dev->intf_fds[disp], &event);
		if (err < 0) {
		ALOGE("error reading event from display %d: %s", disp, strerror(err));
		return;
		}

		void *vsync_temp;
		adf_vsync_event *vsync;
		adf_hotplug_event *hotplug;

		switch (event->type) {
		case ADF_EVENT_VSYNC:
		vsync_temp = event;
		vsync = static_cast<adf_vsync_event *>(vsync_temp);
		// casting directly to adf_vsync_event * makes g++ warn about
		// potential alignment issues that don't apply here
		dev->event_cb->vsync(dev->event_cb_data, disp, vsync->timestamp);
		break;
		case ADF_EVENT_HOTPLUG:
		hotplug = reinterpret_cast<adf_hotplug_event *>(event);
		dev->event_cb->hotplug(dev->event_cb_data, disp, hotplug->connected);
		break;
		default:
		if (event->type < ADF_EVENT_DEVICE_CUSTOM)
		ALOGW("unrecognized event type %u", event->type);
		else if (!dev->event_cb \|\| !dev->event_cb->custom_event)
		ALOGW("unhandled event type %u", event->type);
		else
		dev->event_cb->custom_event(dev->event_cb_data, disp, event);
		}
		free(event);
		}

		static void adf_event_thread(void data)
		{
		adf_hwc_helper dev = static_cast<adf_hwc_helper >(data);

		setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);

		pollfd *fds = new pollfd[dev->intf_fds.size()];
		for (size_t i = 0; i < dev->intf_fds.size(); i++) {
		fds[i].fd = dev->intf_fds[i];
		fds[i].events = POLLIN \| POLLPRI;
		}

		while (true) {
		int err = poll(fds, dev->intf_fds.size(), -1);

		if (err > 0) {
		for (size_t i = 0; i < dev->intf_fds.size(); i++)
		if (fds[i].revents & (POLLIN \| POLLPRI))
		handle_adf_event(dev, i);
		}
		else if (err == -1) {
		if (errno == EINTR)
		break;
		ALOGE("error in event thread: %s", strerror(errno));
		}
		}

		delete [] fds;
		return NULL;
		}

		int adf_hwc_open(int *intf_fds, size_t n_intfs,
		const struct adf_hwc_event_callbacks event_cb, void event_cb_data,
		struct adf_hwc_helper **dev)
		{
		if (!n_intfs)
		return -EINVAL;

		adf_hwc_helper *dev_ret = new adf_hwc_helper;
		dev_ret->event_cb = event_cb;
		dev_ret->event_cb_data = event_cb_data;

		int ret;

		for (size_t i = 0; i < n_intfs; i++) {
		int dup_intf_fd = dup(intf_fds[i]);
		if (dup_intf_fd < 0) {
		ALOGE("failed to dup interface fd: %s", strerror(errno));
		ret = -errno;
		goto err;
		}

		dev_ret->intf_fds.push_back(dup_intf_fd);

		ret = adf_set_event(dup_intf_fd, ADF_EVENT_HOTPLUG, 1);
		if (ret < 0 && ret != -EINVAL) {
		ALOGE("failed to enable hotplug event on display %u: %s",
		i, strerror(errno));
		goto err;
		}
		}

		ret = pthread_create(&dev_ret->event_thread, NULL, adf_event_thread,
		dev_ret);
		if (ret) {
		ALOGE("failed to create event thread: %s", strerror(ret));
		goto err;
		}

		*dev = dev_ret;
		return 0;

		err:
		for (size_t i = 0; i < dev_ret->intf_fds.size(); i++)
		close(dev_ret->intf_fds[i]);

		delete dev_ret;
		return ret;
		}

		void adf_hwc_close(struct adf_hwc_helper *dev)
		{
		pthread_kill(dev->event_thread, SIGTERM);
		pthread_join(dev->event_thread, NULL);

		for (size_t i = 0; i < dev->intf_fds.size(); i++)
		close(dev->intf_fds[i]);

		delete dev;
		}

adf/libadfhwc/include/adfhwc/adfhwc.h

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		/*
		* Copyright (C) 2013 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#ifndef _LIBADFHWC_ADFHWC_H_
		#define _LIBADFHWC_ADFHWC_H_

		#include <stdbool.h>
		#include <stdint.h>
		#include <sys/cdefs.h>
		#include <video/adf.h>

		#include <hardware/hwcomposer.h>

		struct adf_hwc_helper;

		struct adf_hwc_event_callbacks {
		/**
		* Called on vsync (required)
		*/
		void (vsync)(void data, int disp, uint64_t timestamp);
		/**
		* Called on hotplug (required)
		*/
		void (hotplug)(void data, int disp, bool connected);
		/**
		* Called on hardware-custom ADF events (optional)
		*/
		void (custom_event)(void data, int disp, struct adf_event *event);
		};

		/**
		* Converts HAL pixel formats to equivalent ADF/DRM format FourCCs.
		*/
		static inline uint32_t adf_fourcc_for_hal_pixel_format(int format)
		{
		switch (format) {
		case HAL_PIXEL_FORMAT_RGBA_8888:
		return DRM_FORMAT_RGBA8888;
		case HAL_PIXEL_FORMAT_RGBX_8888:
		return DRM_FORMAT_RGBX8888;
		case HAL_PIXEL_FORMAT_RGB_888:
		return DRM_FORMAT_RGB888;
		case HAL_PIXEL_FORMAT_RGB_565:
		return DRM_FORMAT_RGB565;
		case HAL_PIXEL_FORMAT_BGRA_8888:
		return DRM_FORMAT_BGRA8888;
		case HAL_PIXEL_FORMAT_YV12:
		return DRM_FORMAT_YVU420;
		case HAL_PIXEL_FORMAT_YCbCr_422_SP:
		return DRM_FORMAT_NV16;
		case HAL_PIXEL_FORMAT_YCrCb_420_SP:
		return DRM_FORMAT_NV21;
		case HAL_PIXEL_FORMAT_YCbCr_422_I:
		return DRM_FORMAT_YUYV;
		default:
		return 0;
		}
		}

		/**
		* Converts HAL display types to equivalent ADF interface flags.
		*/
		static inline uint32_t adf_hwc_interface_flag_for_disp(int disp)
		{
		switch (disp) {
		case HWC_DISPLAY_PRIMARY:
		return ADF_INTF_FLAG_PRIMARY;
		case HWC_DISPLAY_EXTERNAL:
		return ADF_INTF_FLAG_EXTERNAL;
		default:
		return 0;
		}
		}

		__BEGIN_DECLS

		/**
		* Create a HWC helper for the specified ADF interfaces.
		*
		* intf_fds must be indexed by HWC display type: e.g.,
		* intf_fds[HWC_DISPLAY_PRIMARY] is the fd for the primary display
		* interface. n_intfs must be >= 1.
		*
		* The caller retains ownership of the fds in intf_fds and must close()
		* them when they are no longer needed.
		*
		* On error, returns -errno.
		*/
		int adf_hwc_open(int *intf_fds, size_t n_intfs,
		const struct adf_hwc_event_callbacks event_cb, void event_cb_data,
		struct adf_hwc_helper **dev);

		/**
		* Destroys a HWC helper.
		*/
		void adf_hwc_close(struct adf_hwc_helper *dev);

		/**
		* Generic implementations of common HWC ops.
		*
		* The HWC should not point its ops directly at these helpers. Instead, the HWC
		* should provide stub ops which call these helpers after converting the
		* hwc_composer_device_1* to a struct adf_hwc_helper*.
		*/
		int adf_eventControl(struct adf_hwc_helper *dev, int disp, int event,
		int enabled);
		int adf_blank(struct adf_hwc_helper *dev, int disp, int blank);
		int adf_query_display_types_supported(struct adf_hwc_helper dev, int value);
		int adf_getDisplayConfigs(struct adf_hwc_helper *dev, int disp,
		uint32_t configs, size_t numConfigs);
		int adf_getDisplayAttributes(struct adf_hwc_helper *dev, int disp,
		uint32_t config, const uint32_t attributes, int32_t values);

		__END_DECLS

		#endif /* _LIBADFHWC_ADFHWC_H_ */