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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 <assert.h>
#include <stdlib.h>
#include "webrtc/modules/video_capture/device_info_impl.h"
#include "webrtc/modules/video_capture/video_capture_config.h"
#include "webrtc/system_wrappers/interface/logging.h"
#ifndef abs
#define abs(a) (a>=0?a:-a)
#endif
namespace webrtc
{
namespace videocapturemodule
{
DeviceInfoImpl::DeviceInfoImpl(const int32_t id)
: _id(id), _apiLock(*RWLockWrapper::CreateRWLock()), _lastUsedDeviceName(NULL),
_lastUsedDeviceNameLength(0)
{
}
DeviceInfoImpl::~DeviceInfoImpl(void)
{
_apiLock.AcquireLockExclusive();
free(_lastUsedDeviceName);
_apiLock.ReleaseLockExclusive();
delete &_apiLock;
}
int32_t DeviceInfoImpl::NumberOfCapabilities(
const char* deviceUniqueIdUTF8)
{
if (!deviceUniqueIdUTF8)
return -1;
_apiLock.AcquireLockShared();
if (_lastUsedDeviceNameLength == strlen((char*) deviceUniqueIdUTF8))
{
// Is it the same device that is asked for again.
#if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX)
if(strncasecmp((char*)_lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength)==0)
#else
if (_strnicmp((char*) _lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength) == 0)
#endif
{
//yes
_apiLock.ReleaseLockShared();
return static_cast<int32_t>(_captureCapabilities.size());
}
}
// Need to get exclusive rights to create the new capability map.
_apiLock.ReleaseLockShared();
WriteLockScoped cs2(_apiLock);
int32_t ret = CreateCapabilityMap(deviceUniqueIdUTF8);
return ret;
}
int32_t DeviceInfoImpl::GetCapability(const char* deviceUniqueIdUTF8,
const uint32_t deviceCapabilityNumber,
VideoCaptureCapability& capability)
{
assert(deviceUniqueIdUTF8 != NULL);
ReadLockScoped cs(_apiLock);
if ((_lastUsedDeviceNameLength != strlen((char*) deviceUniqueIdUTF8))
#if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX)
|| (strncasecmp((char*)_lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength)!=0))
#else
|| (_strnicmp((char*) _lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength) != 0))
#endif
{
_apiLock.ReleaseLockShared();
_apiLock.AcquireLockExclusive();
if (-1 == CreateCapabilityMap(deviceUniqueIdUTF8))
{
_apiLock.ReleaseLockExclusive();
_apiLock.AcquireLockShared();
return -1;
}
_apiLock.ReleaseLockExclusive();
_apiLock.AcquireLockShared();
}
// Make sure the number is valid
if (deviceCapabilityNumber >= (unsigned int) _captureCapabilities.size())
{
LOG(LS_ERROR) << "Invalid deviceCapabilityNumber "
<< deviceCapabilityNumber << ">= number of capabilities ("
<< _captureCapabilities.size() << ").";
return -1;
}
capability = _captureCapabilities[deviceCapabilityNumber];
return 0;
}
int32_t DeviceInfoImpl::GetBestMatchedCapability(
const char*deviceUniqueIdUTF8,
const VideoCaptureCapability& requested,
VideoCaptureCapability& resulting)
{
if (!deviceUniqueIdUTF8)
return -1;
ReadLockScoped cs(_apiLock);
if ((_lastUsedDeviceNameLength != strlen((char*) deviceUniqueIdUTF8))
#if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX)
|| (strncasecmp((char*)_lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength)!=0))
#else
|| (_strnicmp((char*) _lastUsedDeviceName,
(char*) deviceUniqueIdUTF8,
_lastUsedDeviceNameLength) != 0))
#endif
{
_apiLock.ReleaseLockShared();
_apiLock.AcquireLockExclusive();
if (-1 == CreateCapabilityMap(deviceUniqueIdUTF8))
{
return -1;
}
_apiLock.ReleaseLockExclusive();
_apiLock.AcquireLockShared();
}
int32_t bestformatIndex = -1;
int32_t bestWidth = 0;
int32_t bestHeight = 0;
int32_t bestFrameRate = 0;
RawVideoType bestRawType = kVideoUnknown;
webrtc::VideoCodecType bestCodecType = webrtc::kVideoCodecUnknown;
const int32_t numberOfCapabilies =
static_cast<int32_t>(_captureCapabilities.size());
for (int32_t tmp = 0; tmp < numberOfCapabilies; ++tmp) // Loop through all capabilities
{
VideoCaptureCapability& capability = _captureCapabilities[tmp];
const int32_t diffWidth = capability.width - requested.width;
const int32_t diffHeight = capability.height - requested.height;
const int32_t diffFrameRate = capability.maxFPS - requested.maxFPS;
const int32_t currentbestDiffWith = bestWidth - requested.width;
const int32_t currentbestDiffHeight = bestHeight - requested.height;
const int32_t currentbestDiffFrameRate = bestFrameRate - requested.maxFPS;
if ((diffHeight >= 0 && diffHeight <= abs(currentbestDiffHeight)) // Height better or equalt that previouse.
|| (currentbestDiffHeight < 0 && diffHeight >= currentbestDiffHeight))
{
if (diffHeight == currentbestDiffHeight) // Found best height. Care about the width)
{
if ((diffWidth >= 0 && diffWidth <= abs(currentbestDiffWith)) // Width better or equal
|| (currentbestDiffWith < 0 && diffWidth >= currentbestDiffWith))
{
if (diffWidth == currentbestDiffWith && diffHeight
== currentbestDiffHeight) // Same size as previously
{
//Also check the best frame rate if the diff is the same as previouse
if (((diffFrameRate >= 0 &&
diffFrameRate <= currentbestDiffFrameRate) // Frame rate to high but better match than previouse and we have not selected IUV
||
(currentbestDiffFrameRate < 0 &&
diffFrameRate >= currentbestDiffFrameRate)) // Current frame rate is lower than requested. This is better.
)
{
if ((currentbestDiffFrameRate == diffFrameRate) // Same frame rate as previous or frame rate allready good enough
|| (currentbestDiffFrameRate >= 0))
{
if (bestRawType != requested.rawType
&& requested.rawType != kVideoUnknown
&& (capability.rawType == requested.rawType
|| capability.rawType == kVideoI420
|| capability.rawType == kVideoYUY2
|| capability.rawType == kVideoYV12))
{
bestCodecType = capability.codecType;
bestRawType = capability.rawType;
bestformatIndex = tmp;
}
// If width height and frame rate is full filled we can use the camera for encoding if it is supported.
if (capability.height == requested.height
&& capability.width == requested.width
&& capability.maxFPS >= requested.maxFPS)
{
if (capability.codecType == requested.codecType
&& bestCodecType != requested.codecType)
{
bestCodecType = capability.codecType;
bestformatIndex = tmp;
}
}
}
else // Better frame rate
{
if (requested.codecType == capability.codecType)
{
bestWidth = capability.width;
bestHeight = capability.height;
bestFrameRate = capability.maxFPS;
bestCodecType = capability.codecType;
bestRawType = capability.rawType;
bestformatIndex = tmp;
}
}
}
}
else // Better width than previously
{
if (requested.codecType == capability.codecType)
{
bestWidth = capability.width;
bestHeight = capability.height;
bestFrameRate = capability.maxFPS;
bestCodecType = capability.codecType;
bestRawType = capability.rawType;
bestformatIndex = tmp;
}
}
}// else width no good
}
else // Better height
{
if (requested.codecType == capability.codecType)
{
bestWidth = capability.width;
bestHeight = capability.height;
bestFrameRate = capability.maxFPS;
bestCodecType = capability.codecType;
bestRawType = capability.rawType;
bestformatIndex = tmp;
}
}
}// else height not good
}//end for
LOG(LS_VERBOSE) << "Best camera format: " << bestWidth << "x" << bestHeight
<< "@" << bestFrameRate
<< "fps, color format: " << bestRawType;
// Copy the capability
if (bestformatIndex < 0)
return -1;
resulting = _captureCapabilities[bestformatIndex];
return bestformatIndex;
}
/* Returns the expected Capture delay*/
int32_t DeviceInfoImpl::GetExpectedCaptureDelay(
const DelayValues delayValues[],
const uint32_t sizeOfDelayValues,
const char* productId,
const uint32_t width,
const uint32_t height)
{
int32_t bestDelay = kDefaultCaptureDelay;
for (uint32_t device = 0; device < sizeOfDelayValues; ++device)
{
if (delayValues[device].productId && strncmp((char*) productId,
(char*) delayValues[device].productId,
kVideoCaptureProductIdLength) == 0)
{
// We have found the camera
int32_t bestWidth = 0;
int32_t bestHeight = 0;
//Loop through all tested sizes and find one that seems fitting
for (uint32_t delayIndex = 0; delayIndex < NoOfDelayValues; ++delayIndex)
{
const DelayValue& currentValue = delayValues[device].delayValues[delayIndex];
const int32_t diffWidth = currentValue.width - width;
const int32_t diffHeight = currentValue.height - height;
const int32_t currentbestDiffWith = bestWidth - width;
const int32_t currentbestDiffHeight = bestHeight - height;
if ((diffHeight >= 0 && diffHeight <= abs(currentbestDiffHeight)) // Height better or equal than previous.
|| (currentbestDiffHeight < 0 && diffHeight >= currentbestDiffHeight))
{
if (diffHeight == currentbestDiffHeight) // Found best height. Care about the width)
{
if ((diffWidth >= 0 && diffWidth <= abs(currentbestDiffWith)) // Width better or equal
|| (currentbestDiffWith < 0 && diffWidth >= currentbestDiffWith))
{
if (diffWidth == currentbestDiffWith && diffHeight
== currentbestDiffHeight) // Same size as previous
{
}
else // Better width than previously
{
bestWidth = currentValue.width;
bestHeight = currentValue.height;
bestDelay = currentValue.delay;
}
}// else width no good
}
else // Better height
{
bestWidth = currentValue.width;
bestHeight = currentValue.height;
bestDelay = currentValue.delay;
}
}// else height not good
}//end for
break;
}
}
if (bestDelay > kMaxCaptureDelay)
{
LOG(LS_WARNING) << "Expected capture delay (" << bestDelay
<< " ms) too high, using " << kMaxCaptureDelay
<< " ms.";
bestDelay = kMaxCaptureDelay;
}
return bestDelay;
}
//Default implementation. This should be overridden by Mobile implementations.
int32_t DeviceInfoImpl::GetOrientation(const char* deviceUniqueIdUTF8,
VideoCaptureRotation& orientation)
{
orientation = kCameraRotate0;
return -1;
}
} // namespace videocapturemodule
} // namespace webrtc
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