am 4b95c2bb: Merge "add libadf" (67afb1fa) · Commits · e / os / android_system_core

adf/Android.mk

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Original line number	Diff line number	Diff line
		#
		# 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 := $(my-dir)

		include $(call first-makefiles-under,$(LOCAL_PATH))

adf/libadf/Android.mk

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+23 −0

Original line number	Diff line number	Diff line
		# 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 := adf.c
		LOCAL_MODULE := libadf
		LOCAL_MODULE_TAGS := optional
		LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
		LOCAL_C_INCLUDES += $(LOCAL_EXPORT_C_INCLUDE_DIRS)
		include $(BUILD_STATIC_LIBRARY)

adf/libadf/adf.c

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+697 −0

Original line number	Diff line number	Diff line
		/*
		* 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 <dirent.h>
		#include <errno.h>
		#include <fcntl.h>
		#include <stdint.h>
		#include <stdio.h>
		#include <string.h>

		#include <linux/limits.h>

		#include <sys/ioctl.h>

		#include <adf/adf.h>

		#define ADF_BASE_PATH "/dev/"

		static ssize_t adf_find_nodes(const char pattern, adf_id_t *ids)
		{
		DIR *dir;
		struct dirent *dirent;
		size_t n = 0;
		ssize_t ret;
		adf_id_t *ids_ret = NULL;

		dir = opendir(ADF_BASE_PATH);
		if (!dir)
		return -errno;

		errno = 0;
		while ((dirent = readdir(dir))) {
		adf_id_t id;
		int matched = sscanf(dirent->d_name, pattern, &id);

		if (matched < 0) {
		ret = -errno;
		goto done;
		} else if (matched != 1) {
		continue;
		}

		adf_id_t new_ids = realloc(ids_ret, (n + 1) sizeof(ids_ret[0]));
		if (!new_ids) {
		ret = -ENOMEM;
		goto done;
		}

		ids_ret = new_ids;
		ids_ret[n] = id;
		n++;
		}
		if (errno)
		ret = -errno;
		else
		ret = n;

		done:
		closedir(dir);
		if (ret < 0)
		free(ids_ret);
		else
		*ids = ids_ret;
		return ret;
		}

		ssize_t adf_devices(adf_id_t **ids)
		{
		return adf_find_nodes("adf%u", ids);
		}

		int adf_device_open(adf_id_t id, int flags, struct adf_device *dev)
		{
		char filename[64];
		int err;

		dev->id = id;

		snprintf(filename, sizeof(filename), ADF_BASE_PATH "adf%u", id);
		dev->fd = open(filename, flags);
		if (dev->fd < 0)
		return -errno;

		return 0;
		}

		void adf_device_close(struct adf_device *dev)
		{
		if (dev->fd >= 0)
		close(dev->fd);
		}

		int adf_get_device_data(struct adf_device dev, struct adf_device_data data)
		{
		int err;
		int ret = 0;

		memset(data, 0, sizeof(*data));

		err = ioctl(dev->fd, ADF_GET_DEVICE_DATA, data);
		if (err < 0)
		return -ENOMEM;

		if (data->n_attachments) {
		data->attachments = malloc(sizeof(data->attachments[0]) *
		data->n_attachments);
		if (!data->attachments)
		return -ENOMEM;
		}

		if (data->n_allowed_attachments) {
		data->allowed_attachments =
		malloc(sizeof(data->allowed_attachments[0]) *
		data->n_allowed_attachments);
		if (!data->allowed_attachments) {
		ret = -ENOMEM;
		goto done;
		}
		}

		if (data->custom_data_size) {
		data->custom_data = malloc(data->custom_data_size);
		if (!data->custom_data) {
		ret = -ENOMEM;
		goto done;
		}
		}

		err = ioctl(dev->fd, ADF_GET_DEVICE_DATA, data);
		if (err < 0)
		ret = -errno;

		done:
		if (ret < 0)
		adf_free_device_data(data);
		return ret;
		}

		void adf_free_device_data(struct adf_device_data *data)
		{
		free(data->attachments);
		free(data->allowed_attachments);
		free(data->custom_data);
		}

		int adf_device_post(struct adf_device *dev,
		adf_id_t *interfaces, size_t n_interfaces,
		struct adf_buffer_config *bufs, size_t n_bufs,
		void *custom_data, size_t custom_data_size)
		{
		int err;
		struct adf_post_config data;

		memset(&data, 0, sizeof(data));
		data.interfaces = interfaces;
		data.n_interfaces = n_interfaces;
		data.bufs = bufs;
		data.n_bufs = n_bufs;
		data.custom_data = custom_data;
		data.custom_data_size = custom_data_size;

		err = ioctl(dev->fd, ADF_POST_CONFIG, &data);
		if (err < 0)
		return -errno;

		return (int)data.complete_fence;
		}

		static int adf_device_attachment(struct adf_device *dev,
		adf_id_t overlay_engine, adf_id_t interface, bool attach)
		{
		int err;
		struct adf_attachment_config data;

		memset(&data, 0, sizeof(data));
		data.overlay_engine = overlay_engine;
		data.interface = interface;

		err = ioctl(dev->fd, attach ? ADF_ATTACH : ADF_DETACH, &data);
		if (err < 0)
		return -errno;

		return 0;
		}

		int adf_device_attach(struct adf_device *dev, adf_id_t overlay_engine,
		adf_id_t interface)
		{
		return adf_device_attachment(dev, overlay_engine, interface, true);
		}

		int adf_device_detach(struct adf_device *dev, adf_id_t overlay_engine,
		adf_id_t interface)
		{
		return adf_device_attachment(dev, overlay_engine, interface, false);
		}

		ssize_t adf_interfaces(struct adf_device dev, adf_id_t *interfaces)
		{
		char pattern[64];

		snprintf(pattern, sizeof(pattern), "adf-interface%u.%%u", dev->id);
		return adf_find_nodes(pattern, interfaces);
		}

		ssize_t adf_interfaces_for_overlay_engine(struct adf_device *dev,
		adf_id_t overlay_engine, adf_id_t **interfaces)
		{
		struct adf_device_data data;
		ssize_t n = 0;
		ssize_t ret;
		adf_id_t *ids_ret = NULL;

		ret = adf_get_device_data(dev, &data);
		if (ret < 0)
		return ret;

		size_t i;
		for (i = 0; i < data.n_allowed_attachments; i++) {
		if (data.allowed_attachments[i].overlay_engine != overlay_engine)
		continue;

		adf_id_t new_ids = realloc(ids_ret, (n + 1) sizeof(ids_ret[0]));
		if (!new_ids) {
		ret = -ENOMEM;
		goto done;
		}

		ids_ret = new_ids;
		ids_ret[n] = data.allowed_attachments[i].interface;
		n++;
		}

		ret = n;

		done:
		adf_free_device_data(&data);
		if (ret < 0)
		free(ids_ret);
		else
		*interfaces = ids_ret;
		return ret;
		}

		static ssize_t adf_interfaces_filter(struct adf_device *dev,
		adf_id_t in, size_t n_in, adf_id_t *out,
		bool (filter)(struct adf_interface_data data, __u32 match),
		__u32 match)
		{
		size_t n = 0;
		ssize_t ret;
		adf_id_t *ids_ret = NULL;

		size_t i;
		for (i = 0; i < n_in; i++) {
		int fd = adf_interface_open(dev, in[i], O_RDONLY);
		if (fd < 0) {
		ret = fd;
		goto done;
		}

		struct adf_interface_data data;
		ret = adf_get_interface_data(fd, &data);
		close(fd);
		if (ret < 0)
		goto done;

		if (!filter(&data, match))
		continue;

		adf_id_t new_ids = realloc(ids_ret, (n + 1) sizeof(ids_ret[0]));
		if (!new_ids) {
		ret = -ENOMEM;
		goto done;
		}

		ids_ret = new_ids;
		ids_ret[n] = in[i];
		n++;
		}

		ret = n;

		done:
		if (ret < 0)
		free(ids_ret);
		else
		*out = ids_ret;
		return ret;
		}

		static bool adf_interface_type_filter(struct adf_interface_data *data,
		__u32 type)
		{
		return data->type == (enum adf_interface_type)type;
		}

		ssize_t adf_interfaces_filter_by_type(struct adf_device *dev,
		enum adf_interface_type type,
		adf_id_t in, size_t n_in, adf_id_t *out)
		{
		return adf_interfaces_filter(dev, in, n_in, out, adf_interface_type_filter,
		type);
		}

		static bool adf_interface_flags_filter(struct adf_interface_data *data,
		__u32 flag)
		{
		return !!(data->flags & flag);
		}

		ssize_t adf_interfaces_filter_by_flag(struct adf_device *dev, __u32 flag,
		adf_id_t in, size_t n_in, adf_id_t *out)
		{
		return adf_interfaces_filter(dev, in, n_in, out, adf_interface_flags_filter,
		flag);
		}

		int adf_interface_open(struct adf_device *dev, adf_id_t id, int flags)
		{
		char filename[64];

		snprintf(filename, sizeof(filename), ADF_BASE_PATH "adf-interface%u.%u",
		dev->id, id);

		int fd = open(filename, flags);
		if (fd < 0)
		return -errno;
		return fd;
		}

		int adf_get_interface_data(int fd, struct adf_interface_data *data)
		{
		int err;
		int ret = 0;

		memset(data, 0, sizeof(*data));

		err = ioctl(fd, ADF_GET_INTERFACE_DATA, data);
		if (err < 0)
		return -errno;

		if (data->n_available_modes) {
		data->available_modes = malloc(sizeof(data->available_modes[0]) *
		data->n_available_modes);
		if (!data->available_modes)
		return -ENOMEM;
		}

		if (data->custom_data_size) {
		data->custom_data = malloc(data->custom_data_size);
		if (!data->custom_data) {
		ret = -ENOMEM;
		goto done;
		}
		}

		err = ioctl(fd, ADF_GET_INTERFACE_DATA, data);
		if (err < 0)
		ret = -errno;

		done:
		if (ret < 0)
		adf_free_interface_data(data);
		return ret;
		}

		void adf_free_interface_data(struct adf_interface_data *data)
		{
		free(data->available_modes);
		free(data->custom_data);
		}

		int adf_interface_blank(int fd, __u8 mode)
		{
		int err = ioctl(fd, ADF_BLANK, mode);
		if (err < 0)
		return -errno;
		return 0;
		}

		int adf_interface_set_mode(int fd, struct drm_mode_modeinfo *mode)
		{
		int err = ioctl(fd, ADF_SET_MODE, mode);
		if (err < 0)
		return -errno;
		return 0;
		}

		int adf_interface_simple_buffer_alloc(int fd, __u32 w, __u32 h,
		__u32 format, __u32 offset, __u32 pitch)
		{
		int err;
		struct adf_simple_buffer_alloc data;

		memset(&data, 0, sizeof(data));
		data.w = w;
		data.h = h;
		data.format = format;

		err = ioctl(fd, ADF_SIMPLE_BUFFER_ALLOC, &data);
		if (err < 0)
		return -errno;

		*offset = data.offset;
		*pitch = data.pitch;
		return (int)data.fd;
		}

		int adf_interface_simple_post(int fd, __u32 overlay_engine,
		__u32 w, __u32 h, __u32 format, int buf_fd, __u32 offset,
		__u32 pitch, int acquire_fence)
		{
		int ret;
		struct adf_simple_post_config data;

		memset(&data, 0, sizeof(data));
		data.buf.overlay_engine = overlay_engine;
		data.buf.w = w;
		data.buf.h = h;
		data.buf.format = format;
		data.buf.fd[0] = buf_fd;
		data.buf.offset[0] = offset;
		data.buf.pitch[0] = pitch;
		data.buf.n_planes = 1;
		data.buf.acquire_fence = acquire_fence;

		ret = ioctl(fd, ADF_SIMPLE_POST_CONFIG, &data);
		if (ret < 0)
		return -errno;

		return (int)data.complete_fence;
		}

		ssize_t adf_overlay_engines(struct adf_device dev, adf_id_t *overlay_engines)
		{
		char pattern[64];

		snprintf(pattern, sizeof(pattern), "adf-overlay-engine%u.%%u", dev->id);
		return adf_find_nodes(pattern, overlay_engines);
		}

		ssize_t adf_overlay_engines_for_interface(struct adf_device *dev,
		adf_id_t interface, adf_id_t **overlay_engines)
		{
		struct adf_device_data data;
		ssize_t n = 0;
		ssize_t ret;
		adf_id_t *ids_ret = NULL;

		ret = adf_get_device_data(dev, &data);
		if (ret < 0)
		return ret;

		size_t i;
		for (i = 0; i < data.n_allowed_attachments; i++) {
		if (data.allowed_attachments[i].interface != interface)
		continue;

		adf_id_t new_ids = realloc(ids_ret, (n + 1) sizeof(ids_ret[0]));
		if (!new_ids) {
		ret = -ENOMEM;
		goto done;
		}

		ids_ret = new_ids;
		ids_ret[n] = data.allowed_attachments[i].overlay_engine;
		n++;
		}

		ret = n;

		done:
		adf_free_device_data(&data);
		if (ret < 0)
		free(ids_ret);
		else
		*overlay_engines = ids_ret;
		return ret;
		}

		static ssize_t adf_overlay_engines_filter(struct adf_device *dev,
		adf_id_t in, size_t n_in, adf_id_t *out,
		bool (filter)(struct adf_overlay_engine_data data, __u32 match),
		__u32 match)
		{
		size_t n = 0;
		ssize_t ret;
		adf_id_t *ids_ret = NULL;

		size_t i;
		for (i = 0; i < n_in; i++) {
		int fd = adf_overlay_engine_open(dev, in[i], O_RDONLY);
		if (fd < 0) {
		ret = fd;
		goto done;
		}

		struct adf_overlay_engine_data data;
		ret = adf_get_overlay_engine_data(fd, &data);
		close(fd);
		if (ret < 0)
		goto done;

		if (!filter(&data, match))
		continue;

		adf_id_t new_ids = realloc(ids_ret, (n + 1) sizeof(ids_ret[0]));
		if (!new_ids) {
		ret = -ENOMEM;
		goto done;
		}

		ids_ret = new_ids;
		ids_ret[n] = in[i];
		n++;
		}

		ret = n;

		done:
		if (ret < 0)
		free(ids_ret);
		else
		*out = ids_ret;
		return ret;
		}

		static bool adf_overlay_engine_format_filter(struct adf_overlay_engine_data *data,
		__u32 format)
		{
		size_t i;
		for (i = 0; i < data->n_supported_formats; i++)
		if (data->supported_formats[i] == format)
		return true;
		return false;
		}

		ssize_t adf_overlay_engines_filter_by_format(struct adf_device *dev,
		__u32 format, adf_id_t in, size_t n_in, adf_id_t *out)
		{
		return adf_overlay_engines_filter(dev, in, n_in, out,
		adf_overlay_engine_format_filter, format);
		}

		int adf_overlay_engine_open(struct adf_device *dev, adf_id_t id, int flags)
		{
		char filename[64];

		snprintf(filename, sizeof(filename),
		ADF_BASE_PATH "adf-overlay-engine%u.%u", dev->id, id);

		int fd = open(filename, flags);
		if (fd < 0)
		return -errno;
		return fd;
		}

		int adf_get_overlay_engine_data(int fd, struct adf_overlay_engine_data *data)
		{
		int err;
		int ret = 0;

		memset(data, 0, sizeof(*data));

		err = ioctl(fd, ADF_GET_OVERLAY_ENGINE_DATA, data);
		if (err < 0)
		return -errno;

		if (data->n_supported_formats) {
		data->supported_formats = malloc(sizeof(data->supported_formats[0]) *
		data->n_supported_formats);
		if (!data->supported_formats)
		return -ENOMEM;
		}

		if (data->custom_data_size) {
		data->custom_data = malloc(data->custom_data_size);
		if (!data->custom_data) {
		ret = -ENOMEM;
		goto done;
		}
		}

		err = ioctl(fd, ADF_GET_OVERLAY_ENGINE_DATA, data);
		if (err < 0)
		ret = -errno;

		done:
		if (ret < 0)
		adf_free_overlay_engine_data(data);
		return ret;
		}

		void adf_free_overlay_engine_data(struct adf_overlay_engine_data *data)
		{
		free(data->supported_formats);
		free(data->custom_data);
		}

		bool adf_overlay_engine_supports_format(int fd, __u32 format)
		{
		struct adf_overlay_engine_data data;
		bool ret = false;
		size_t i;

		int err = adf_get_overlay_engine_data(fd, &data);
		if (err < 0)
		return false;

		for (i = 0; i < data.n_supported_formats; i++) {
		if (data.supported_formats[i] == format) {
		ret = true;
		break;
		}
		}

		adf_free_overlay_engine_data(&data);
		return ret;
		}

		int adf_set_event(int fd, enum adf_event_type type, bool enabled)
		{
		struct adf_set_event data;

		data.type = type;
		data.enabled = enabled;

		int err = ioctl(fd, ADF_SET_EVENT, &data);
		if (err < 0)
		return -errno;
		return 0;
		}

		int adf_read_event(int fd, struct adf_event **event)
		{
		struct adf_event header;
		struct {
		struct adf_event base;
		uint8_t data[0];
		} *event_ret;
		size_t data_size;
		int ret = 0;

		int err = read(fd, &header, sizeof(header));
		if (err < 0)
		return -errno;
		if ((size_t)err < sizeof(header))
		return -EIO;
		if (header.length < sizeof(header))
		return -EIO;

		event_ret = malloc(header.length);
		if (!event_ret)
		return -ENOMEM;
		data_size = header.length - sizeof(header);

		memcpy(event_ret, &header, sizeof(header));
		ssize_t read_size = read(fd, &event_ret->data, data_size);
		if (read_size < 0) {
		ret = -errno;
		goto done;
		}
		if ((size_t)read_size < data_size) {
		ret = -EIO;
		goto done;
		}

		*event = &event_ret->base;

		done:
		if (ret < 0)
		free(event_ret);
		return ret;
		}

		void adf_format_str(__u32 format, char buf[ADF_FORMAT_STR_SIZE])
		{
		buf[0] = format & 0xFF;
		buf[1] = (format >> 8) & 0xFF;
		buf[2] = (format >> 16) & 0xFF;
		buf[3] = (format >> 24) & 0xFF;
		buf[4] = '\0';
		}

adf/libadf/include/adf/adf.h

0 → 100644

+234 −0

File added.

Preview size limit exceeded, changes collapsed.