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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/video_capture_resource.h"
#include "ppapi/c/dev/ppp_video_capture_dev.h"
#include "ppapi/proxy/dispatch_reply_message.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_globals.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppb_buffer_proxy.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/shared_impl/proxy_lock.h"
#include "ppapi/shared_impl/tracked_callback.h"
namespace ppapi {
namespace proxy {
VideoCaptureResource::VideoCaptureResource(
Connection connection,
PP_Instance instance,
PluginDispatcher* dispatcher)
: PluginResource(connection, instance),
open_state_(BEFORE_OPEN),
enumeration_helper_(this) {
SendCreate(RENDERER, PpapiHostMsg_VideoCapture_Create());
ppp_video_capture_impl_ = static_cast<const PPP_VideoCapture_Dev*>(
dispatcher->local_get_interface()(PPP_VIDEO_CAPTURE_DEV_INTERFACE));
}
VideoCaptureResource::~VideoCaptureResource() {
}
void VideoCaptureResource::OnReplyReceived(
const ResourceMessageReplyParams& params,
const IPC::Message& msg) {
if (enumeration_helper_.HandleReply(params, msg))
return;
if (params.sequence()) {
PluginResource::OnReplyReceived(params, msg);
return;
}
PPAPI_BEGIN_MESSAGE_MAP(VideoCaptureResource, msg)
PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
PpapiPluginMsg_VideoCapture_OnDeviceInfo,
OnPluginMsgOnDeviceInfo)
PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
PpapiPluginMsg_VideoCapture_OnStatus,
OnPluginMsgOnStatus)
PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
PpapiPluginMsg_VideoCapture_OnError,
OnPluginMsgOnError)
PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
PpapiPluginMsg_VideoCapture_OnBufferReady,
OnPluginMsgOnBufferReady)
PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL_UNHANDLED(NOTREACHED())
PPAPI_END_MESSAGE_MAP()
}
int32_t VideoCaptureResource::EnumerateDevices(
const PP_ArrayOutput& output,
scoped_refptr<TrackedCallback> callback) {
return enumeration_helper_.EnumerateDevices(output, callback);
}
int32_t VideoCaptureResource::MonitorDeviceChange(
PP_MonitorDeviceChangeCallback callback,
void* user_data) {
return enumeration_helper_.MonitorDeviceChange(callback, user_data);
}
int32_t VideoCaptureResource::Open(
const std::string& device_id,
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count,
scoped_refptr<TrackedCallback> callback) {
if (open_state_ != BEFORE_OPEN)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(open_callback_))
return PP_ERROR_INPROGRESS;
open_callback_ = callback;
Call<PpapiPluginMsg_VideoCapture_OpenReply>(
RENDERER,
PpapiHostMsg_VideoCapture_Open(device_id, requested_info, buffer_count),
base::Bind(&VideoCaptureResource::OnPluginMsgOpenReply, this));
return PP_OK_COMPLETIONPENDING;
}
int32_t VideoCaptureResource::StartCapture() {
if (open_state_ != OPENED)
return PP_ERROR_FAILED;
Post(RENDERER, PpapiHostMsg_VideoCapture_StartCapture());
return PP_OK;
}
int32_t VideoCaptureResource::ReuseBuffer(uint32_t buffer) {
if (buffer >= buffer_in_use_.size() || !buffer_in_use_[buffer])
return PP_ERROR_BADARGUMENT;
Post(RENDERER, PpapiHostMsg_VideoCapture_ReuseBuffer(buffer));
return PP_OK;
}
int32_t VideoCaptureResource::StopCapture() {
if (open_state_ != OPENED)
return PP_ERROR_FAILED;
Post(RENDERER, PpapiHostMsg_VideoCapture_StopCapture());
return PP_OK;
}
void VideoCaptureResource::Close() {
if (open_state_ == CLOSED)
return;
Post(RENDERER, PpapiHostMsg_VideoCapture_Close());
open_state_ = CLOSED;
if (TrackedCallback::IsPending(open_callback_))
open_callback_->PostAbort();
}
int32_t VideoCaptureResource::EnumerateDevicesSync(
const PP_ArrayOutput& devices) {
return enumeration_helper_.EnumerateDevicesSync(devices);
}
void VideoCaptureResource::LastPluginRefWasDeleted() {
enumeration_helper_.LastPluginRefWasDeleted();
}
void VideoCaptureResource::OnPluginMsgOnDeviceInfo(
const ResourceMessageReplyParams& params,
const struct PP_VideoCaptureDeviceInfo_Dev& info,
const std::vector<HostResource>& buffers,
uint32_t buffer_size) {
if (!ppp_video_capture_impl_)
return;
std::vector<base::SharedMemoryHandle> handles;
params.TakeAllSharedMemoryHandles(&handles);
CHECK(handles.size() == buffers.size());
PluginResourceTracker* tracker =
PluginGlobals::Get()->plugin_resource_tracker();
scoped_ptr<PP_Resource[]> resources(new PP_Resource[buffers.size()]);
for (size_t i = 0; i < buffers.size(); ++i) {
// We assume that the browser created a new set of resources.
DCHECK(!tracker->PluginResourceForHostResource(buffers[i]));
resources[i] = ppapi::proxy::PPB_Buffer_Proxy::AddProxyResource(
buffers[i], handles[i], buffer_size);
}
buffer_in_use_ = std::vector<bool>(buffers.size());
CallWhileUnlocked(ppp_video_capture_impl_->OnDeviceInfo,
pp_instance(),
pp_resource(),
&info,
buffers.size(),
resources.get());
for (size_t i = 0; i < buffers.size(); ++i)
tracker->ReleaseResource(resources[i]);
}
void VideoCaptureResource::OnPluginMsgOnStatus(
const ResourceMessageReplyParams& params,
uint32_t status) {
switch (status) {
case PP_VIDEO_CAPTURE_STATUS_STARTING:
case PP_VIDEO_CAPTURE_STATUS_STOPPING:
// Those states are not sent by the browser.
NOTREACHED();
break;
}
if (ppp_video_capture_impl_) {
CallWhileUnlocked(ppp_video_capture_impl_->OnStatus,
pp_instance(),
pp_resource(),
status);
}
}
void VideoCaptureResource::OnPluginMsgOnError(
const ResourceMessageReplyParams& params,
uint32_t error_code) {
open_state_ = CLOSED;
if (ppp_video_capture_impl_) {
CallWhileUnlocked(ppp_video_capture_impl_->OnError,
pp_instance(),
pp_resource(),
error_code);
}
}
void VideoCaptureResource::OnPluginMsgOnBufferReady(
const ResourceMessageReplyParams& params,
uint32_t buffer) {
SetBufferInUse(buffer);
if (ppp_video_capture_impl_) {
CallWhileUnlocked(ppp_video_capture_impl_->OnBufferReady,
pp_instance(),
pp_resource(),
buffer);
}
}
void VideoCaptureResource::OnPluginMsgOpenReply(
const ResourceMessageReplyParams& params) {
if (open_state_ == BEFORE_OPEN && params.result() == PP_OK)
open_state_ = OPENED;
// The callback may have been aborted by Close().
if (TrackedCallback::IsPending(open_callback_))
open_callback_->Run(params.result());
}
void VideoCaptureResource::SetBufferInUse(uint32_t buffer_index) {
CHECK(buffer_index < buffer_in_use_.size());
buffer_in_use_[buffer_index] = true;
}
} // namespace proxy
} // namespace ppapi
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