aosp12/frameworks/av/media/libmedia/IOMX.cpp

892 lines
28 KiB
C++

/*
* Copyright (c) 2009 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.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "IOMX"
#include <utils/Log.h>
#include <sys/mman.h>
#include <binder/IMemory.h>
#include <binder/Parcel.h>
#include <media/IOMX.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/openmax/OMX_IndexExt.h>
#include <media/OMXBuffer.h>
#include <utils/NativeHandle.h>
#include <media/omx/1.0/WOmxNode.h>
#include <android/IOMXBufferSource.h>
namespace android {
enum {
CONNECT = IBinder::FIRST_CALL_TRANSACTION,
LIST_NODES,
ALLOCATE_NODE,
CREATE_INPUT_SURFACE,
FREE_NODE,
SEND_COMMAND,
GET_PARAMETER,
SET_PARAMETER,
GET_CONFIG,
SET_CONFIG,
SET_PORT_MODE,
SET_INPUT_SURFACE,
PREPARE_FOR_ADAPTIVE_PLAYBACK,
ALLOC_SECURE_BUFFER,
USE_BUFFER,
FREE_BUFFER,
FILL_BUFFER,
EMPTY_BUFFER,
GET_EXTENSION_INDEX,
OBSERVER_ON_MSG,
GET_GRAPHIC_BUFFER_USAGE,
CONFIGURE_VIDEO_TUNNEL_MODE,
DISPATCH_MESSAGE,
SET_QUIRKS,
};
class BpOMXNode : public BpInterface<IOMXNode> {
public:
explicit BpOMXNode(const sp<IBinder> &impl)
: BpInterface<IOMXNode>(impl) {
}
virtual status_t freeNode() {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
remote()->transact(FREE_NODE, data, &reply);
return reply.readInt32();
}
virtual status_t sendCommand(
OMX_COMMANDTYPE cmd, OMX_S32 param) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(cmd);
data.writeInt32(param);
remote()->transact(SEND_COMMAND, data, &reply);
return reply.readInt32();
}
virtual status_t getParameter(
OMX_INDEXTYPE index,
void *params, size_t size) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(index);
data.writeInt64(size);
data.write(params, size);
remote()->transact(GET_PARAMETER, data, &reply);
status_t err = reply.readInt32();
if (err != OK) {
return err;
}
reply.read(params, size);
return OK;
}
virtual status_t setParameter(
OMX_INDEXTYPE index,
const void *params, size_t size) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(index);
data.writeInt64(size);
data.write(params, size);
remote()->transact(SET_PARAMETER, data, &reply);
return reply.readInt32();
}
virtual status_t getConfig(
OMX_INDEXTYPE index,
void *params, size_t size) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(index);
data.writeInt64(size);
data.write(params, size);
remote()->transact(GET_CONFIG, data, &reply);
status_t err = reply.readInt32();
if (err != OK) {
return err;
}
reply.read(params, size);
return OK;
}
virtual status_t setConfig(
OMX_INDEXTYPE index,
const void *params, size_t size) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(index);
data.writeInt64(size);
data.write(params, size);
remote()->transact(SET_CONFIG, data, &reply);
return reply.readInt32();
}
virtual status_t setPortMode(
OMX_U32 port_index, IOMX::PortMode mode) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
data.writeInt32(mode);
remote()->transact(SET_PORT_MODE, data, &reply);
return reply.readInt32();
}
virtual status_t getGraphicBufferUsage(
OMX_U32 port_index, OMX_U32* usage) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
remote()->transact(GET_GRAPHIC_BUFFER_USAGE, data, &reply);
status_t err = reply.readInt32();
*usage = reply.readInt32();
return err;
}
virtual status_t useBuffer(
OMX_U32 port_index, const OMXBuffer &omxBuf, buffer_id *buffer) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
status_t err = omxBuf.writeToParcel(&data);
if (err != OK) {
return err;
}
remote()->transact(USE_BUFFER, data, &reply);
err = reply.readInt32();
if (err != OK) {
*buffer = 0;
return err;
}
*buffer = (buffer_id)reply.readInt32();
return err;
}
virtual status_t setInputSurface(
const sp<IOMXBufferSource> &bufferSource) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeStrongBinder(IInterface::asBinder(bufferSource));
status_t err = remote()->transact(SET_INPUT_SURFACE, data, &reply);
if (err != OK) {
ALOGW("binder transaction failed: %d", err);
return err;
}
err = reply.readInt32();
return err;
}
virtual status_t prepareForAdaptivePlayback(
OMX_U32 port_index, OMX_BOOL enable,
OMX_U32 max_width, OMX_U32 max_height) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
data.writeInt32((int32_t)enable);
data.writeInt32(max_width);
data.writeInt32(max_height);
remote()->transact(PREPARE_FOR_ADAPTIVE_PLAYBACK, data, &reply);
status_t err = reply.readInt32();
return err;
}
virtual status_t configureVideoTunnelMode(
OMX_U32 portIndex, OMX_BOOL tunneled,
OMX_U32 audioHwSync, native_handle_t **sidebandHandle ) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(portIndex);
data.writeInt32((int32_t)tunneled);
data.writeInt32(audioHwSync);
remote()->transact(CONFIGURE_VIDEO_TUNNEL_MODE, data, &reply);
status_t err = reply.readInt32();
if (err == OK && sidebandHandle) {
*sidebandHandle = (native_handle_t *)reply.readNativeHandle();
}
return err;
}
virtual status_t allocateSecureBuffer(
OMX_U32 port_index, size_t size,
buffer_id *buffer, void **buffer_data, sp<NativeHandle> *native_handle) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
data.writeInt64(size);
remote()->transact(ALLOC_SECURE_BUFFER, data, &reply);
status_t err = reply.readInt32();
if (err != OK) {
*buffer = 0;
*buffer_data = NULL;
*native_handle = NULL;
return err;
}
*buffer = (buffer_id)reply.readInt32();
*buffer_data = (void *)reply.readInt64();
if (*buffer_data == NULL) {
*native_handle = NativeHandle::create(
reply.readNativeHandle(), true /* ownsHandle */);
} else {
*native_handle = NULL;
}
return err;
}
virtual status_t freeBuffer(
OMX_U32 port_index, buffer_id buffer) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(port_index);
data.writeInt32((int32_t)buffer);
remote()->transact(FREE_BUFFER, data, &reply);
return reply.readInt32();
}
virtual status_t fillBuffer(
buffer_id buffer, const OMXBuffer &omxBuf, int fenceFd) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32((int32_t)buffer);
status_t err = omxBuf.writeToParcel(&data);
if (err != OK) {
return err;
}
data.writeInt32(fenceFd >= 0);
if (fenceFd >= 0) {
data.writeFileDescriptor(fenceFd, true /* takeOwnership */);
}
remote()->transact(FILL_BUFFER, data, &reply);
return reply.readInt32();
}
virtual status_t emptyBuffer(
buffer_id buffer, const OMXBuffer &omxBuf,
OMX_U32 flags, OMX_TICKS timestamp, int fenceFd) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32((int32_t)buffer);
status_t err = omxBuf.writeToParcel(&data);
if (err != OK) {
return err;
}
data.writeInt32(flags);
data.writeInt64(timestamp);
data.writeInt32(fenceFd >= 0);
if (fenceFd >= 0) {
data.writeFileDescriptor(fenceFd, true /* takeOwnership */);
}
remote()->transact(EMPTY_BUFFER, data, &reply);
return reply.readInt32();
}
virtual status_t getExtensionIndex(
const char *parameter_name,
OMX_INDEXTYPE *index) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeCString(parameter_name);
remote()->transact(GET_EXTENSION_INDEX, data, &reply);
status_t err = reply.readInt32();
if (err == OK) {
*index = static_cast<OMX_INDEXTYPE>(reply.readInt32());
} else {
*index = OMX_IndexComponentStartUnused;
}
return err;
}
virtual status_t dispatchMessage(const omx_message &msg) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(msg.fenceFd >= 0);
if (msg.fenceFd >= 0) {
data.writeFileDescriptor(msg.fenceFd, true /* takeOwnership */);
}
data.writeInt32(msg.type);
data.write(&msg.u, sizeof(msg.u));
remote()->transact(DISPATCH_MESSAGE, data, &reply);
return reply.readInt32();
}
virtual status_t setQuirks(OMX_U32 quirks) {
Parcel data, reply;
data.writeInterfaceToken(IOMXNode::getInterfaceDescriptor());
data.writeInt32(quirks);
remote()->transact(SET_QUIRKS, data, &reply);
return reply.readInt32();
}
};
using ::android::hardware::media::omx::V1_0::utils::LWOmxNode;
class HpOMXNode : public HpInterface<BpOMXNode, LWOmxNode> {
public:
HpOMXNode(const sp<IBinder>& base) : PBase(base) {}
virtual status_t freeNode() {
return mBase->freeNode();
}
virtual status_t sendCommand(
OMX_COMMANDTYPE cmd, OMX_S32 param) {
return mBase->sendCommand(cmd, param);
}
virtual status_t getParameter(
OMX_INDEXTYPE index, void *params, size_t size) {
return mBase->getParameter(index, params, size);
}
virtual status_t setParameter(
OMX_INDEXTYPE index, const void *params, size_t size) {
return mBase->setParameter(index, params, size);
}
virtual status_t getConfig(
OMX_INDEXTYPE index, void *params, size_t size) {
return mBase->getConfig(index, params, size);
}
virtual status_t setConfig(
OMX_INDEXTYPE index, const void *params, size_t size) {
return mBase->setConfig(index, params, size);
}
virtual status_t setPortMode(
OMX_U32 port_index, IOMX::PortMode mode) {
return mBase->setPortMode(port_index, mode);
}
virtual status_t prepareForAdaptivePlayback(
OMX_U32 portIndex, OMX_BOOL enable,
OMX_U32 maxFrameWidth, OMX_U32 maxFrameHeight) {
return mBase->prepareForAdaptivePlayback(
portIndex, enable, maxFrameWidth, maxFrameHeight);
}
virtual status_t configureVideoTunnelMode(
OMX_U32 portIndex, OMX_BOOL tunneled,
OMX_U32 audioHwSync, native_handle_t **sidebandHandle) {
return mBase->configureVideoTunnelMode(
portIndex, tunneled, audioHwSync, sidebandHandle);
}
virtual status_t getGraphicBufferUsage(
OMX_U32 port_index, OMX_U32* usage) {
return mBase->getGraphicBufferUsage(port_index, usage);
}
virtual status_t setInputSurface(
const sp<IOMXBufferSource> &bufferSource) {
return mBase->setInputSurface(bufferSource);
}
virtual status_t allocateSecureBuffer(
OMX_U32 port_index, size_t size, buffer_id *buffer,
void **buffer_data, sp<NativeHandle> *native_handle) {
return mBase->allocateSecureBuffer(
port_index, size, buffer, buffer_data, native_handle);
}
virtual status_t useBuffer(
OMX_U32 port_index, const OMXBuffer &omxBuf, buffer_id *buffer) {
return mBase->useBuffer(port_index, omxBuf, buffer);
}
virtual status_t freeBuffer(
OMX_U32 port_index, buffer_id buffer) {
return mBase->freeBuffer(port_index, buffer);
}
virtual status_t fillBuffer(
buffer_id buffer, const OMXBuffer &omxBuf, int fenceFd = -1) {
return mBase->fillBuffer(buffer, omxBuf, fenceFd);
}
virtual status_t emptyBuffer(
buffer_id buffer, const OMXBuffer &omxBuf,
OMX_U32 flags, OMX_TICKS timestamp, int fenceFd = -1) {
return mBase->emptyBuffer(buffer, omxBuf, flags, timestamp, fenceFd);
}
virtual status_t getExtensionIndex(
const char *parameter_name,
OMX_INDEXTYPE *index) {
return mBase->getExtensionIndex(parameter_name, index);
}
virtual status_t dispatchMessage(const omx_message &msg) {
return mBase->dispatchMessage(msg);
}
};
IMPLEMENT_HYBRID_META_INTERFACE(OMXNode, "android.hardware.IOMXNode");
////////////////////////////////////////////////////////////////////////////////
#define CHECK_OMX_INTERFACE(interface, data, reply) \
do { if (!(data).enforceInterface(interface::getInterfaceDescriptor())) { \
ALOGW("Call incorrectly routed to " #interface); \
return PERMISSION_DENIED; \
} } while (0)
status_t BnOMXNode::onTransact(
uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
switch (code) {
case FREE_NODE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
reply->writeInt32(freeNode());
return NO_ERROR;
}
case SEND_COMMAND:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_COMMANDTYPE cmd =
static_cast<OMX_COMMANDTYPE>(data.readInt32());
OMX_S32 param = data.readInt32();
reply->writeInt32(sendCommand(cmd, param));
return NO_ERROR;
}
case GET_PARAMETER:
case SET_PARAMETER:
case GET_CONFIG:
case SET_CONFIG:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_INDEXTYPE index = static_cast<OMX_INDEXTYPE>(data.readInt32());
size_t size = data.readInt64();
status_t err = NOT_ENOUGH_DATA;
void *params = NULL;
size_t pageSize = 0;
size_t allocSize = 0;
bool isUsageBits = (index == (OMX_INDEXTYPE) OMX_IndexParamConsumerUsageBits);
if ((isUsageBits && size < 4) || (!isUsageBits && size < 8)) {
// we expect the structure to contain at least the size and
// version, 8 bytes total
ALOGE("b/27207275 (%zu) (%d/%d)", size, int(index), int(code));
android_errorWriteLog(0x534e4554, "27207275");
} else {
err = NO_MEMORY;
pageSize = (size_t) sysconf(_SC_PAGE_SIZE);
if (size > SIZE_MAX - (pageSize * 2)) {
ALOGE("requested param size too big");
} else {
allocSize = (size + pageSize * 2) & ~(pageSize - 1);
params = mmap(NULL, allocSize, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1 /* fd */, 0 /* offset */);
}
if (params != MAP_FAILED && params != NULL) {
err = data.read(params, size);
if (err != OK) {
android_errorWriteLog(0x534e4554, "26914474");
} else {
err = NOT_ENOUGH_DATA;
OMX_U32 declaredSize = *(OMX_U32*)params;
if (index != (OMX_INDEXTYPE) OMX_IndexParamConsumerUsageBits &&
declaredSize > size) {
// the buffer says it's bigger than it actually is
ALOGE("b/27207275 (%u/%zu)", declaredSize, size);
android_errorWriteLog(0x534e4554, "27207275");
} else {
// mark the last page as inaccessible, to avoid exploitation
// of codecs that access past the end of the allocation because
// they didn't check the size
if (mprotect((char*)params + allocSize - pageSize, pageSize,
PROT_NONE) != 0) {
ALOGE("mprotect failed: %s", strerror(errno));
} else {
switch (code) {
case GET_PARAMETER:
err = getParameter(index, params, size);
break;
case SET_PARAMETER:
err = setParameter(index, params, size);
break;
case GET_CONFIG:
err = getConfig(index, params, size);
break;
case SET_CONFIG:
err = setConfig(index, params, size);
break;
default:
TRESPASS();
}
}
}
}
} else {
ALOGE("couldn't map: %s", strerror(errno));
}
}
reply->writeInt32(err);
if ((code == GET_PARAMETER || code == GET_CONFIG) && err == OK) {
reply->write(params, size);
}
if (params) {
munmap(params, allocSize);
}
params = NULL;
return NO_ERROR;
}
case SET_PORT_MODE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
IOMX::PortMode mode = (IOMX::PortMode) data.readInt32();
reply->writeInt32(setPortMode(port_index, mode));
return NO_ERROR;
}
case GET_GRAPHIC_BUFFER_USAGE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
OMX_U32 usage = 0;
status_t err = getGraphicBufferUsage(port_index, &usage);
reply->writeInt32(err);
reply->writeInt32(usage);
return NO_ERROR;
}
case USE_BUFFER:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
OMXBuffer omxBuf;
status_t err = omxBuf.readFromParcel(&data);
if (err != OK) {
return err;
}
buffer_id buffer;
err = useBuffer(port_index, omxBuf, &buffer);
reply->writeInt32(err);
if (err == OK) {
reply->writeInt32((int32_t)buffer);
}
return NO_ERROR;
}
case SET_INPUT_SURFACE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
sp<IOMXBufferSource> bufferSource =
interface_cast<IOMXBufferSource>(data.readStrongBinder());
status_t err = setInputSurface(bufferSource);
reply->writeInt32(err);
return NO_ERROR;
}
case PREPARE_FOR_ADAPTIVE_PLAYBACK:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
OMX_BOOL enable = (OMX_BOOL)data.readInt32();
OMX_U32 max_width = data.readInt32();
OMX_U32 max_height = data.readInt32();
status_t err = prepareForAdaptivePlayback(
port_index, enable, max_width, max_height);
reply->writeInt32(err);
return NO_ERROR;
}
case CONFIGURE_VIDEO_TUNNEL_MODE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
OMX_BOOL tunneled = (OMX_BOOL)data.readInt32();
OMX_U32 audio_hw_sync = data.readInt32();
native_handle_t *sideband_handle = NULL;
status_t err = configureVideoTunnelMode(
port_index, tunneled, audio_hw_sync, &sideband_handle);
reply->writeInt32(err);
if(err == OK){
reply->writeNativeHandle(sideband_handle);
}
return NO_ERROR;
}
case ALLOC_SECURE_BUFFER:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
if (!isSecure() || port_index != 0 /* kPortIndexInput */) {
ALOGE("b/24310423");
reply->writeInt32(INVALID_OPERATION);
return NO_ERROR;
}
size_t size = data.readInt64();
buffer_id buffer;
void *buffer_data = NULL;
sp<NativeHandle> native_handle;
status_t err = allocateSecureBuffer(
port_index, size, &buffer, &buffer_data, &native_handle);
reply->writeInt32(err);
if (err == OK) {
reply->writeInt32((int32_t)buffer);
reply->writeInt64((uintptr_t)buffer_data);
if (buffer_data == NULL) {
reply->writeNativeHandle(native_handle == NULL ? NULL : native_handle->handle());
}
}
return NO_ERROR;
}
case FREE_BUFFER:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
OMX_U32 port_index = data.readInt32();
buffer_id buffer = (buffer_id)data.readInt32();
reply->writeInt32(freeBuffer(port_index, buffer));
return NO_ERROR;
}
case FILL_BUFFER:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
buffer_id buffer = (buffer_id)data.readInt32();
OMXBuffer omxBuf;
status_t err = omxBuf.readFromParcel(&data);
if (err != OK) {
return err;
}
bool haveFence = data.readInt32();
int fenceFd = haveFence ? ::dup(data.readFileDescriptor()) : -1;
reply->writeInt32(fillBuffer(buffer, omxBuf, fenceFd));
return NO_ERROR;
}
case EMPTY_BUFFER:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
buffer_id buffer = (buffer_id)data.readInt32();
OMXBuffer omxBuf;
status_t err = omxBuf.readFromParcel(&data);
if (err != OK) {
return err;
}
OMX_U32 flags = data.readInt32();
OMX_TICKS timestamp = data.readInt64();
bool haveFence = data.readInt32();
int fenceFd = haveFence ? ::dup(data.readFileDescriptor()) : -1;
reply->writeInt32(emptyBuffer(
buffer, omxBuf, flags, timestamp, fenceFd));
return NO_ERROR;
}
case GET_EXTENSION_INDEX:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
const char *parameter_name = data.readCString();
if (parameter_name == NULL) {
ALOGE("b/26392700");
reply->writeInt32(INVALID_OPERATION);
return NO_ERROR;
}
OMX_INDEXTYPE index;
status_t err = getExtensionIndex(parameter_name, &index);
reply->writeInt32(err);
if (err == OK) {
reply->writeInt32(index);
}
return OK;
}
case DISPATCH_MESSAGE:
{
CHECK_OMX_INTERFACE(IOMXNode, data, reply);
omx_message msg;
int haveFence = data.readInt32();
msg.fenceFd = haveFence ? ::dup(data.readFileDescriptor()) : -1;
msg.type = (typeof(msg.type))data.readInt32();
status_t err = data.read(&msg.u, sizeof(msg.u));
if (err == OK) {
err = dispatchMessage(msg);
}
reply->writeInt32(err);
return NO_ERROR;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
////////////////////////////////////////////////////////////////////////////////
class BpOMXObserver : public BpInterface<IOMXObserver> {
public:
explicit BpOMXObserver(const sp<IBinder> &impl)
: BpInterface<IOMXObserver>(impl) {
}
virtual void onMessages(const std::list<omx_message> &messages) {
Parcel data, reply;
std::list<omx_message>::const_iterator it = messages.cbegin();
if (messages.empty()) {
return;
}
data.writeInterfaceToken(IOMXObserver::getInterfaceDescriptor());
while (it != messages.cend()) {
const omx_message &msg = *it++;
data.writeInt32(msg.fenceFd >= 0);
if (msg.fenceFd >= 0) {
data.writeFileDescriptor(msg.fenceFd, true /* takeOwnership */);
}
data.writeInt32(msg.type);
data.write(&msg.u, sizeof(msg.u));
ALOGV("onMessage writing message %d, size %zu", msg.type, sizeof(msg));
}
data.writeInt32(-1); // mark end
remote()->transact(OBSERVER_ON_MSG, data, &reply, IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(OMXObserver, "android.hardware.IOMXObserver");
status_t BnOMXObserver::onTransact(
uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
switch (code) {
case OBSERVER_ON_MSG:
{
CHECK_OMX_INTERFACE(IOMXObserver, data, reply);
std::list<omx_message> messages;
status_t err = FAILED_TRANSACTION; // must receive at least one message
do {
int haveFence = data.readInt32();
if (haveFence < 0) { // we use -1 to mark end of messages
break;
}
omx_message msg;
msg.fenceFd = haveFence ? ::dup(data.readFileDescriptor()) : -1;
msg.type = (typeof(msg.type))data.readInt32();
err = data.read(&msg.u, sizeof(msg.u));
ALOGV("onTransact reading message %d, size %zu", msg.type, sizeof(msg));
messages.push_back(msg);
} while (err == OK);
if (err == OK) {
onMessages(messages);
}
return err;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
} // namespace android