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ipc: Work on Android using AHardwareBuffer instead of FDs for graphics

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This commit is contained in:
Ryan Pavlik 2020-07-07 17:49:14 -05:00
parent 030e5564ff
commit 86d93601d7
2 changed files with 65 additions and 0 deletions
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9
src/xrt/include/xrt/xrt_handles.h
View file

@ -9,6 +9,8 @@
#pragma once
#include "xrt_config_os.h"
#ifdef __cplusplus
extern "C" {
#endif
@ -20,6 +22,12 @@ extern "C" {
*/
typedef int xrt_shmem_handle_t;
#if defined(XRT_OS_ANDROID)
typedef struct AHardwareBuffer AHardwareBuffer;
typedef AHardwareBuffer *xrt_graphics_buffer_handle_t;
#else
/*!
* The type underlying buffers shared between compositor clients and the main
* compositor.
@ -27,6 +35,7 @@ typedef int xrt_shmem_handle_t;
* On Linux, this is a file descriptor.
*/
typedef int xrt_graphics_buffer_handle_t;
#endif
#ifdef __cplusplus
}

56
src/xrt/ipc/ipc_utils.c
View file

@ -237,6 +237,60 @@ ipc_send_handles_shmem(struct ipc_message_channel *imc,
return ipc_send_fds(imc, data, size, handles, num_handles);
}
#if defined(XRT_OS_ANDROID)
#include <android/hardware_buffer.h>
#if __ANDROID_API__ < 26
#error "Android API level 26 or higher needed for AHardwareBuffer"
#endif
xrt_result_t
ipc_receive_handles_graphics_buffer(struct ipc_message_channel *imc,
void *out_data,
size_t size,
xrt_graphics_buffer_handle_t *out_handles,
uint32_t num_handles)
{
xrt_result_t result = ipc_receive(imc, out_data, size);
if (result != XRT_SUCCESS) {
return result;
}
bool failed = false;
for (uint32_t i = 0; i < num_handles; ++i) {
int err = AHardwareBuffer_recvHandleFromUnixSocket(
imc->socket_fd, &(out_handles[i]));
if (err != 0) {
failed = true;
}
}
return failed ? XRT_ERROR_IPC_FAILURE : XRT_SUCCESS;
}
xrt_result_t
ipc_send_handles_graphics_buffer(struct ipc_message_channel *imc,
const void *data,
size_t size,
const xrt_graphics_buffer_handle_t *handles,
uint32_t num_handles)
{
xrt_result_t result = ipc_send(imc, data, size);
if (result != XRT_SUCCESS) {
return result;
}
bool failed = false;
for (uint32_t i = 0; i < num_handles; ++i) {
int err = AHardwareBuffer_sendHandleToUnixSocket(
handles[i], imc->socket_fd);
if (err != 0) {
failed = true;
}
}
return failed ? XRT_ERROR_IPC_FAILURE : XRT_SUCCESS;
}
#else
xrt_result_t
ipc_receive_handles_graphics_buffer(struct ipc_message_channel *imc,
@ -258,3 +312,5 @@ ipc_send_handles_graphics_buffer(struct ipc_message_channel *imc,
{
return ipc_send_fds(imc, data, size, handles, num_handles);
}
#endif