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Fix thread safety in VcmCapturer.

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Makes VcmCapturer::Stop() blocking so that no frames can be in delivery
while the camera has stopped.

BUG=
R=mflodman@webrtc.org

Review URL: https://codereview.webrtc.org/1411813004 .

Cr-Commit-Position: refs/heads/master@{#10385}
This commit is contained in:
Peter Boström
2015-10-23 14:45:55 +02:00
parent bbe876f0d3
commit 1e737c6f2c
2 changed files with 16 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
webrtc/test/vcm_capturer.cc
View File

@ -58,19 +58,25 @@ VcmCapturer* VcmCapturer::Create(VideoCaptureInput* input,
size_t width,
size_t height,
size_t target_fps) {
VcmCapturer* vcm__capturer = new VcmCapturer(input);
if (!vcm__capturer->Init(width, height, target_fps)) {
VcmCapturer* vcm_capturer = new VcmCapturer(input);
if (!vcm_capturer->Init(width, height, target_fps)) {
// TODO(pbos): Log a warning that this failed.
delete vcm__capturer;
delete vcm_capturer;
return NULL;
}
return vcm__capturer;
return vcm_capturer;
}
void VcmCapturer::Start() { started_ = true; }
void VcmCapturer::Start() {
rtc::CritScope lock(&crit_);
started_ = true;
}
void VcmCapturer::Stop() { started_ = false; }
void VcmCapturer::Stop() {
rtc::CritScope lock(&crit_);
started_ = false;
}
void VcmCapturer::Destroy() {
if (vcm_ == NULL) {
@ -90,6 +96,7 @@ VcmCapturer::~VcmCapturer() { Destroy(); }
void VcmCapturer::OnIncomingCapturedFrame(const int32_t id,
const VideoFrame& frame) {
rtc::CritScope lock(&crit_);
if (started_)
input_->IncomingCapturedFrame(frame);
}

4
webrtc/test/vcm_capturer.h
View File

@ -10,6 +10,7 @@
#ifndef WEBRTC_VIDEO_ENGINE_TEST_COMMON_VCM_CAPTURER_H_
#define WEBRTC_VIDEO_ENGINE_TEST_COMMON_VCM_CAPTURER_H_
#include "webrtc/base/criticalsection.h"
#include "webrtc/common_types.h"
#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
#include "webrtc/modules/video_capture/include/video_capture.h"
@ -38,7 +39,8 @@ class VcmCapturer : public VideoCapturer, public VideoCaptureDataCallback {
bool Init(size_t width, size_t height, size_t target_fps);
void Destroy();
bool started_;
rtc::CriticalSection crit_;
bool started_ GUARDED_BY(crit_);
VideoCaptureModule* vcm_;
VideoCaptureCapability capability_;
};