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/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "video_engine/vie_render_manager.h"
#include "engine_configurations.h" // NOLINT
#include "webrtc/modules/video_render/include/video_render.h"
#include "webrtc/modules/video_render/include/video_render_defines.h"
#include "system_wrappers/interface/critical_section_wrapper.h"
#include "system_wrappers/interface/rw_lock_wrapper.h"
#include "system_wrappers/interface/trace.h"
#include "video_engine/vie_defines.h"
#include "video_engine/vie_renderer.h"
namespace webrtc {
ViERenderManagerScoped::ViERenderManagerScoped(
const ViERenderManager& vie_render_manager)
: ViEManagerScopedBase(vie_render_manager) {
}
ViERenderer* ViERenderManagerScoped::Renderer(WebRtc_Word32 render_id) const {
return static_cast<const ViERenderManager*>(vie_manager_)->ViERenderPtr(
render_id);
}
ViERenderManager::ViERenderManager(WebRtc_Word32 engine_id)
: list_cs_(CriticalSectionWrapper::CreateCriticalSection()),
engine_id_(engine_id),
use_external_render_module_(false) {
WEBRTC_TRACE(webrtc::kTraceMemory, webrtc::kTraceVideo, ViEId(engine_id),
"ViERenderManager::ViERenderManager(engine_id: %d) - "
"Constructor", engine_id);
}
ViERenderManager::~ViERenderManager() {
WEBRTC_TRACE(webrtc::kTraceMemory, webrtc::kTraceVideo, ViEId(engine_id_),
"ViERenderManager Destructor, engine_id: %d", engine_id_);
while (stream_to_vie_renderer_.Size() != 0) {
MapItem* item = stream_to_vie_renderer_.First();
assert(item);
const WebRtc_Word32 render_id = item->GetId();
// The renderer is delete in RemoveRenderStream.
item = NULL;
RemoveRenderStream(render_id);
}
}
WebRtc_Word32 ViERenderManager::RegisterVideoRenderModule(
VideoRender* render_module) {
// See if there is already a render module registered for the window that
// the registrant render module is associated with.
VideoRender* current_module = FindRenderModule(render_module->Window());
if (current_module) {
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo, ViEId(engine_id_),
"A module is already registered for this window (window=%p, "
"current module=%p, registrant module=%p.",
render_module->Window(), current_module, render_module);
return -1;
}
// Register module.
render_list_.PushBack(static_cast<void*>(render_module));
use_external_render_module_ = true;
return 0;
}
WebRtc_Word32 ViERenderManager::DeRegisterVideoRenderModule(
VideoRender* render_module) {
// Check if there are streams in the module.
WebRtc_UWord32 n_streams = render_module->GetNumIncomingRenderStreams();
if (n_streams != 0) {
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo, ViEId(engine_id_),
"There are still %d streams in this module, cannot "
"de-register", n_streams);
return -1;
}
// Erase the render module from the map.
ListItem* list_item = NULL;
bool found = false;
for (list_item = render_list_.First(); list_item != NULL;
list_item = render_list_.Next(list_item)) {
if (render_module == static_cast<VideoRender*>(list_item->GetItem())) {
// We've found our renderer.
render_list_.Erase(list_item);
found = true;
break;
}
}
if (!found) {
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo, ViEId(engine_id_),
"Module not registered");
return -1;
}
return 0;
}
ViERenderer* ViERenderManager::AddRenderStream(const WebRtc_Word32 render_id,
void* window,
const WebRtc_UWord32 z_order,
const float left,
const float top,
const float right,
const float bottom) {
CriticalSectionScoped cs(list_cs_.get());
if (stream_to_vie_renderer_.Find(render_id) != NULL) {
// This stream is already added to a renderer, not allowed!
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo, ViEId(engine_id_),
"Render stream already exists");
return NULL;
}
// Get the render module for this window.
VideoRender* render_module = FindRenderModule(window);
if (render_module == NULL) {
// No render module for this window, create a new one.
render_module = VideoRender::CreateVideoRender(ViEModuleId(engine_id_, -1),
window, false);
if (!render_module) {
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo, ViEId(engine_id_),
"Could not create new render module");
return NULL;
}
render_list_.PushBack(static_cast<void*>(render_module));
}
ViERenderer* vie_renderer = ViERenderer::CreateViERenderer(render_id,
engine_id_,
*render_module,
*this, z_order,
left, top, right,
bottom);
if (!vie_renderer) {
WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideo,
ViEId(engine_id_, render_id),
"Could not create new render stream");
return NULL;
}
stream_to_vie_renderer_.Insert(render_id, vie_renderer);
return vie_renderer;
}
WebRtc_Word32 ViERenderManager::RemoveRenderStream(
const WebRtc_Word32 render_id) {
// We need exclusive right to the items in the render manager to delete a
// stream.
ViEManagerWriteScoped scope(this);
CriticalSectionScoped cs(list_cs_.get());
MapItem* map_item = stream_to_vie_renderer_.Find(render_id);
if (!map_item) {
// No such stream
WEBRTC_TRACE(webrtc::kTraceWarning, webrtc::kTraceVideo, ViEId(engine_id_),
"No renderer for this stream found, channel_id");
return 0;
}
ViERenderer* vie_renderer = static_cast<ViERenderer*>(map_item->GetItem());
assert(vie_renderer);
// Get the render module pointer for this vie_render object.
VideoRender& renderer = vie_renderer->RenderModule();
// Delete the vie_render.
// This deletes the stream in the render module.
delete vie_renderer;
// Remove from the stream map.
stream_to_vie_renderer_.Erase(map_item);
// Check if there are other streams in the module.
if (!use_external_render_module_ &&
renderer.GetNumIncomingRenderStreams() == 0) {
// Erase the render module from the map.
ListItem* list_item = NULL;
for (list_item = render_list_.First(); list_item != NULL;
list_item = render_list_.Next(list_item)) {
if (&renderer == static_cast<VideoRender*>(list_item->GetItem())) {
// We've found our renderer.
render_list_.Erase(list_item);
break;
}
}
// Destroy the module.
VideoRender::DestroyVideoRender(&renderer);
}
return 0;
}
VideoRender* ViERenderManager::FindRenderModule(void* window) {
VideoRender* renderer = NULL;
ListItem* list_item = NULL;
for (list_item = render_list_.First(); list_item != NULL;
list_item = render_list_.Next(list_item)) {
renderer = static_cast<VideoRender*>(list_item->GetItem());
if (renderer == NULL) {
break;
}
if (renderer->Window() == window) {
// We've found the render module.
break;
}
renderer = NULL;
}
return renderer;
}
ViERenderer* ViERenderManager::ViERenderPtr(WebRtc_Word32 render_id) const {
ViERenderer* renderer = NULL;
MapItem* map_item = stream_to_vie_renderer_.Find(render_id);
if (!map_item) {
// No such stream in any renderer.
return NULL;
}
renderer = static_cast<ViERenderer*>(map_item->GetItem());
return renderer;
}
} // namespace webrtc
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