Add DVR API for scroll event injection. (d8fccf01) · Commits · e / os / android_frameworks_native-old

libs/vr/libdvr/dvr_api.cpp

+13 −6

Original line number	Diff line number	Diff line
		@@ -3,6 +3,8 @@
		#include <errno.h>
		#include <utils/Log.h>

		#include <algorithm>

		// Headers from libdvr
		#include <dvr/dvr_buffer.h>
		#include <dvr/dvr_buffer_queue.h>
		@@ -23,15 +25,20 @@ int dvrGetApi(void* api, size_t struct_size, int version) {
		ALOGI("dvrGetApi: api=%p struct_size=%zu version=%d", api, struct_size,
		version);
		if (version == 1) {
		if (struct_size != sizeof(DvrApi_v1)) {
		ALOGE("dvrGetApi: Size mismatch: expected %zu; actual %zu",
		sizeof(DvrApi_v1), struct_size);
		return -EINVAL;
		}
		// New entry points are added at the end. If the caller's struct and
		// this library have different sizes, we define the entry points in common.
		// The caller is expected to handle unset entry points if necessary.
		size_t clamped_struct_size = std::min(struct_size, sizeof(DvrApi_v1));
		DvrApi_v1* dvr_api = static_cast<DvrApi_v1*>(api);

		// Defines an API entry for V1 (no version suffix).
		#define DVR_V1_API_ENTRY(name) dvr_api->name = dvr##name
		#define DVR_V1_API_ENTRY(name) \
		do { \
		if ((offsetof(DvrApi_v1, name) + sizeof(dvr_api->name)) <= \
		clamped_struct_size) { \
		dvr_api->name = dvr##name; \
		} \
		} while (0)

		#include "include/dvr/dvr_api_entries.h"

+2 −0

Original line number	Diff line number	Diff line
		@@ -238,6 +238,8 @@ typedef int (DvrVirtualTouchpadTouchPtr)(DvrVirtualTouchpad client,
		float pressure);
		typedef int (DvrVirtualTouchpadButtonStatePtr)(DvrVirtualTouchpad client,
		int touchpad, int buttons);
		typedef int (DvrVirtualTouchpadScrollPtr)(DvrVirtualTouchpad client,
		int touchpad, float x, float y);

		// dvr_hardware_composer_client.h
		typedef struct DvrHwcClient DvrHwcClient;

+6 −0

Original line number	Diff line number	Diff line
		@@ -141,3 +141,9 @@ DVR_V1_API_ENTRY(HwcFrameGetLayerNumVisibleRegions);
		DVR_V1_API_ENTRY(HwcFrameGetLayerVisibleRegion);
		DVR_V1_API_ENTRY(HwcFrameGetLayerNumDamagedRegions);
		DVR_V1_API_ENTRY(HwcFrameGetLayerDamagedRegion);

		// New entries added at the end to allow the DVR platform library API
		// to be updated before updating VrCore.

		// Virtual touchpad client
		DVR_V1_API_ENTRY(VirtualTouchpadScroll);

+5 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,11 @@ int dvrVirtualTouchpadButtonState(DvrVirtualTouchpad* client, int touchpad,
		return FromC(client)->ButtonState(touchpad, buttons);
		}

		int dvrVirtualTouchpadScroll(DvrVirtualTouchpad* client, int touchpad, float x,
		float y) {
		return FromC(client)->Scroll(touchpad, x, y);
		}

		#ifdef __cplusplus
		} // extern "C"
		#endif

+23 −0

Original line number	Diff line number	Diff line
		@@ -168,6 +168,25 @@ int EvdevInjector::ConfigureAbsSlots(int slots) {
		return ConfigureAbs(ABS_MT_SLOT, 0, slots, 0, 0);
		}

		int EvdevInjector::ConfigureRel(uint16_t rel_type) {
		ALOGV("ConfigureRel 0x%" PRIX16 "", rel_type);
		if (rel_type < 0 \|\| rel_type >= REL_CNT) {
		ALOGE("EV_REL type 0x%" PRIX16 " out of range [0,0x%X)", rel_type, REL_CNT);
		return Error(ERROR_REL_RANGE);
		}
		if (const int status = RequireState(State::CONFIGURING)) {
		return status;
		}
		if (const int status = EnableEventType(EV_REL)) {
		return status;
		}
		if (const int status = uinput_->IoctlSetInt(UI_SET_RELBIT, rel_type)) {
		ALOGE("failed to enable EV_REL 0x%" PRIX16 "", rel_type);
		return Error(status);
		}
		return 0;
		}

		int EvdevInjector::ConfigureEnd() {
		ALOGV("ConfigureEnd:");
		ALOGV(" name=\"%s\"", uidev_.name);
		@@ -236,6 +255,10 @@ int EvdevInjector::SendAbs(uint16_t code, int32_t value) {
		return Send(EV_ABS, code, value);
		}

		int EvdevInjector::SendRel(uint16_t code, int32_t value) {
		return Send(EV_REL, code, value);
		}

		int EvdevInjector::SendMultiTouchSlot(int32_t slot) {
		if (latest_slot_ != slot) {
		if (const int status = SendAbs(ABS_MT_SLOT, slot)) {