iphone - 查找设备相机分辨率iOS的方法

coder 2023-07-26 原文

使用设置 AVCaptureSessionPresetPhoto 找到要捕获的图像分辨率的最佳方法是什么。
我试图在捕获图像之前找到分辨率。

最佳答案

这是支持 iOS 9 的设备上所有经过测试的相机 sessionPreset 的表格

+-----------------------+--------------+---------------------------------+---------------+
|        Device         |    Camera    |     AVCaptureSessionPreset      |  Resolution   |
+-----------------------+--------------+---------------------------------+---------------+
| iPhone 4S             | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 640x480       |
|                       |              | AVCaptureSessionPresetHigh      | 640x480       |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | not supported |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 3264x2448     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPhone 5/5C/5S/6/6+   |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 3264x2448     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPhone 6S/6S          |              |                                 |               |
|                       | FRONT camera |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK camera  |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 4032x3024     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPad 2                |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 640x480       |
|                       |              | AVCaptureSessionPresetHigh      | 640x480       |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | not supported |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 960x720       |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
+-----------------------+--------------+---------------------------------+---------------+
| iPad 3                |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 640x480       |
|                       |              | AVCaptureSessionPresetHigh      | 640x480       |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | not supported |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 2592x1936     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPad 4/Air            |              |                                 |               |
| iPad Mini 1/2/3       |              |                                 |               |
| iPod 5G               |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 2592x1936     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPad Air 2            |              |                                 |               |
| iPad Mini 4           |              |                                 |               |
| iPad Pro              |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 3264x2448     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPod Touch 5          |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 2592x1936     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+
| iPod Touch 6          |              |                                 |               |
|                       | FRONT        |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 1280x960      |
|                       |              | AVCaptureSessionPresetHigh      | 1280x720      |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | not supported |
|                       | BACK         |                                 |               |
|                       |              | AVCaptureSessionPresetPhoto     | 3264x2448     |
|                       |              | AVCaptureSessionPresetHigh      | 1920x1080     |
|                       |              | AVCaptureSessionPresetMedium    | 480x360       |
|                       |              | AVCaptureSessionPresetLow       | 192x144       |
|                       |              | AVCaptureSessionPreset640x480   | 640x480       |
|                       |              | AVCaptureSessionPreset1280x720  | 1280x720      |
|                       |              | AVCaptureSessionPreset1920x1080 | 1920x1080     |
+-----------------------+--------------+---------------------------------+---------------+

代码

+ (NSDictionary*) cameraResolutions {
    NSString* deviceModel = [self deviceModel];

    // iPhone 4S
    if ([deviceModel isEqualToString:@"iPhone4,1"]) {

        NSString* lFrontCam = @"640x480,480x360,192x144";
        NSString* lBackCam = @"3264x2448,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    // iPhone 5/5C/5S/6/6+/iPod 6
    else if ([deviceModel isEqualToString:@"iPhone5,1"]
             || [deviceModel isEqualToString:@"iPhone5,2"]
             || [deviceModel isEqualToString:@"iPhone5,3"]
             || [deviceModel isEqualToString:@"iPhone5,4"]
             || [deviceModel isEqualToString:@"iPhone6,1"]
             || [deviceModel isEqualToString:@"iPhone6,2"]
             || [deviceModel isEqualToString:@"iPhone7,1"]
             || [deviceModel isEqualToString:@"iPhone7,2"]
             || [deviceModel isEqualToString:@"iPod7,1"]) {

        NSString* lFrontCam = @"1280x960,1280x720,640x480,480x360,192x144";
        NSString* lBackCam = @"3264x2448,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    // iPhone 6S/6S+
    else if ([deviceModel isEqualToString:@"iPhone8,1"]
             || [deviceModel isEqualToString:@"iPhone8,2"]) {
        NSString* lFrontCam = @"1280x960,1280x720,640x480,480x360,192x144";
        NSString* lBackCam = @"4032x3024,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    // iPad 2
    else if ([deviceModel isEqualToString:@"iPad2,1"]
             || [deviceModel isEqualToString:@"iPad2,2"]
             || [deviceModel isEqualToString:@"iPad2,3"]
             || [deviceModel isEqualToString:@"iPad2,4"]) {


        NSString* lFrontCam = @"640x480,480x360,192x144";
        NSString* lBackCam = @"1280x720,960x720,480x360,192x144,640x480";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    // iPad 3
    else if ([deviceModel isEqualToString:@"iPad3,1"]
             || [deviceModel isEqualToString:@"iPad3,2"]
             || [deviceModel isEqualToString:@"iPad3,3"]) {


        NSString* lFrontCam = @"640x480,480x360,192x144";
        NSString* lBackCam = @"2592x1936,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    // iPad 4/Air/Mini/Mini 2/Mini 3/iPod 5G
    else if ([deviceModel isEqualToString:@"iPad3,4"]
             || [deviceModel isEqualToString:@"iPad3,5"]
             || [deviceModel isEqualToString:@"iPad3,6"]
             || [deviceModel isEqualToString:@"iPad4,1"]
             || [deviceModel isEqualToString:@"iPad4,2"]
             || [deviceModel isEqualToString:@"iPad4,3"]
             || [deviceModel isEqualToString:@"iPad4,4"]
             || [deviceModel isEqualToString:@"iPad4,5"]
             || [deviceModel isEqualToString:@"iPad4,6"]
             || [deviceModel isEqualToString:@"iPad4,7"]
             || [deviceModel isEqualToString:@"iPad4,8"]
             || [deviceModel isEqualToString:@"iPod5,1"]) {

        NSString* lFrontCam = @"1280x960,1280x720,640x480,480x360,192x144";
        NSString* lBackCam = @"2592x1936,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                           @"back":lBackCam};
        return lCamResolutions;
    }
    // iPad Air 2/Mini 4/Pro
    else if ([deviceModel isEqualToString:@"iPad5,3"]
             || [deviceModel isEqualToString:@"iPad5,4"]) {
        NSString* lFrontCam = @"1280x960,1280x720,640x480,480x360,192x144";
        NSString* lBackCam = @"3264x2448,1920x1080,1280x720,640x480,480x360,192x144";
        NSDictionary* lCamResolutions = @{@"front":lFrontCam,
                                          @"back":lBackCam};
        return lCamResolutions;
    }
    return nil;
}

关于iphone - 查找设备相机分辨率iOS的方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19422322/

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iphone - 查找设备相机分辨率iOS的方法

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