2 * Copyright (C) 2013 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package android.hardware.camera2;
19 import android.hardware.camera2.params.InputConfiguration;
20 import android.hardware.camera2.params.StreamConfigurationMap;
21 import android.hardware.camera2.params.OutputConfiguration;
22 import android.os.Handler;
23 import android.view.Surface;
25 import java.util.List;
28 * <p>The CameraDevice class is a representation of a single camera connected to an
29 * Android device, allowing for fine-grain control of image capture and
30 * post-processing at high frame rates.</p>
32 * <p>Your application must declare the
33 * {@link android.Manifest.permission#CAMERA Camera} permission in its manifest
34 * in order to access camera devices.</p>
36 * <p>A given camera device may provide support at one of two levels: limited or
37 * full. If a device only supports the limited level, then Camera2 exposes a
38 * feature set that is roughly equivalent to the older
39 * {@link android.hardware.Camera Camera} API, although with a cleaner and more
40 * efficient interface. Devices that implement the full level of support
41 * provide substantially improved capabilities over the older camera
42 * API. Applications that target the limited level devices will run unchanged on
43 * the full-level devices; if your application requires a full-level device for
44 * proper operation, declare the "android.hardware.camera2.full" feature in your
47 * @see CameraManager#openCamera
48 * @see android.Manifest.permission#CAMERA
50 public abstract class CameraDevice implements AutoCloseable {
53 * Create a request suitable for a camera preview window. Specifically, this
54 * means that high frame rate is given priority over the highest-quality
55 * post-processing. These requests would normally be used with the
56 * {@link CameraCaptureSession#setRepeatingRequest} method.
57 * This template is guaranteed to be supported on all camera devices.
59 * @see #createCaptureRequest
61 public static final int TEMPLATE_PREVIEW = 1;
64 * Create a request suitable for still image capture. Specifically, this
65 * means prioritizing image quality over frame rate. These requests would
66 * commonly be used with the {@link CameraCaptureSession#capture} method.
67 * This template is guaranteed to be supported on all camera devices.
69 * @see #createCaptureRequest
71 public static final int TEMPLATE_STILL_CAPTURE = 2;
74 * Create a request suitable for video recording. Specifically, this means
75 * that a stable frame rate is used, and post-processing is set for
76 * recording quality. These requests would commonly be used with the
77 * {@link CameraCaptureSession#setRepeatingRequest} method.
78 * This template is guaranteed to be supported on all camera devices.
80 * @see #createCaptureRequest
82 public static final int TEMPLATE_RECORD = 3;
85 * Create a request suitable for still image capture while recording
86 * video. Specifically, this means maximizing image quality without
87 * disrupting the ongoing recording. These requests would commonly be used
88 * with the {@link CameraCaptureSession#capture} method while a request based on
89 * {@link #TEMPLATE_RECORD} is is in use with {@link CameraCaptureSession#setRepeatingRequest}.
90 * This template is guaranteed to be supported on all camera devices except
91 * legacy devices ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL}
92 * {@code == }{@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY})
94 * @see #createCaptureRequest
96 public static final int TEMPLATE_VIDEO_SNAPSHOT = 4;
99 * Create a request suitable for zero shutter lag still capture. This means
100 * means maximizing image quality without compromising preview frame rate.
101 * AE/AWB/AF should be on auto mode.
102 * This template is guaranteed to be supported on camera devices that support the
103 * {@link CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_OPAQUE_REPROCESSING OPAQUE_REPROCESSING}
105 * {@link CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING YUV_REPROCESSING}
108 * @see #createCaptureRequest
110 public static final int TEMPLATE_ZERO_SHUTTER_LAG = 5;
113 * A basic template for direct application control of capture
114 * parameters. All automatic control is disabled (auto-exposure, auto-white
115 * balance, auto-focus), and post-processing parameters are set to preview
116 * quality. The manual capture parameters (exposure, sensitivity, and so on)
117 * are set to reasonable defaults, but should be overriden by the
118 * application depending on the intended use case.
119 * This template is guaranteed to be supported on camera devices that support the
120 * {@link CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR MANUAL_SENSOR}
123 * @see #createCaptureRequest
125 public static final int TEMPLATE_MANUAL = 6;
128 * Get the ID of this camera device.
130 * <p>This matches the ID given to {@link CameraManager#openCamera} to instantiate this
131 * this camera device.</p>
133 * <p>This ID can be used to query the camera device's {@link
134 * CameraCharacteristics fixed properties} with {@link
135 * CameraManager#getCameraCharacteristics}.</p>
137 * <p>This method can be called even if the device has been closed or has encountered
138 * a serious error.</p>
140 * @return the ID for this camera device
142 * @see CameraManager#getCameraCharacteristics
143 * @see CameraManager#getCameraIdList
145 public abstract String getId();
148 * <p>Create a new camera capture session by providing the target output set of Surfaces to the
151 * <p>The active capture session determines the set of potential output Surfaces for
152 * the camera device for each capture request. A given request may use all
153 * or only some of the outputs. Once the CameraCaptureSession is created, requests can be
154 * can be submitted with {@link CameraCaptureSession#capture capture},
155 * {@link CameraCaptureSession#captureBurst captureBurst},
156 * {@link CameraCaptureSession#setRepeatingRequest setRepeatingRequest}, or
157 * {@link CameraCaptureSession#setRepeatingBurst setRepeatingBurst}.</p>
159 * <p>Surfaces suitable for inclusion as a camera output can be created for
160 * various use cases and targets:</p>
164 * <li>For drawing to a {@link android.view.SurfaceView SurfaceView}: Once the SurfaceView's
165 * Surface is {@link android.view.SurfaceHolder.Callback#surfaceCreated created}, set the size
166 * of the Surface with {@link android.view.SurfaceHolder#setFixedSize} to be one of the sizes
167 * returned by {@link StreamConfigurationMap#getOutputSizes(Class)
168 * getOutputSizes(SurfaceHolder.class)} and then obtain the Surface by calling {@link
169 * android.view.SurfaceHolder#getSurface}. If the size is not set by the application, it will
170 * be rounded to the nearest supported size less than 1080p, by the camera device.</li>
172 * <li>For accessing through an OpenGL texture via a {@link android.graphics.SurfaceTexture
173 * SurfaceTexture}: Set the size of the SurfaceTexture with {@link
174 * android.graphics.SurfaceTexture#setDefaultBufferSize} to be one of the sizes returned by
175 * {@link StreamConfigurationMap#getOutputSizes(Class) getOutputSizes(SurfaceTexture.class)}
176 * before creating a Surface from the SurfaceTexture with {@link Surface#Surface}. If the size
177 * is not set by the application, it will be set to be the smallest supported size less than
178 * 1080p, by the camera device.</li>
180 * <li>For recording with {@link android.media.MediaCodec}: Call
181 * {@link android.media.MediaCodec#createInputSurface} after configuring
182 * the media codec to use one of the sizes returned by
183 * {@link StreamConfigurationMap#getOutputSizes(Class) getOutputSizes(MediaCodec.class)}
186 * <li>For recording with {@link android.media.MediaRecorder}: Call
187 * {@link android.media.MediaRecorder#getSurface} after configuring the media recorder to use
188 * one of the sizes returned by
189 * {@link StreamConfigurationMap#getOutputSizes(Class) getOutputSizes(MediaRecorder.class)},
190 * or configuring it to use one of the supported
191 * {@link android.media.CamcorderProfile CamcorderProfiles}.</li>
193 * <li>For efficient YUV processing with {@link android.renderscript}:
194 * Create a RenderScript
195 * {@link android.renderscript.Allocation Allocation} with a supported YUV
196 * type, the IO_INPUT flag, and one of the sizes returned by
197 * {@link StreamConfigurationMap#getOutputSizes(Class) getOutputSizes(Allocation.class)},
198 * Then obtain the Surface with
199 * {@link android.renderscript.Allocation#getSurface}.</li>
201 * <li>For access to RAW, uncompressed YUV, or compressed JPEG data in the application: Create an
202 * {@link android.media.ImageReader} object with one of the supported output formats given by
203 * {@link StreamConfigurationMap#getOutputFormats()}, setting its size to one of the
204 * corresponding supported sizes by passing the chosen output format into
205 * {@link StreamConfigurationMap#getOutputSizes(int)}. Then obtain a
206 * {@link android.view.Surface} from it with {@link android.media.ImageReader#getSurface()}.
207 * If the ImageReader size is not set to a supported size, it will be rounded to a supported
208 * size less than 1080p by the camera device.
213 * <p>The camera device will query each Surface's size and formats upon this
214 * call, so they must be set to a valid setting at this time.</p>
216 * <p>It can take several hundred milliseconds for the session's configuration to complete,
217 * since camera hardware may need to be powered on or reconfigured. Once the configuration is
218 * complete and the session is ready to actually capture data, the provided
219 * {@link CameraCaptureSession.StateCallback}'s
220 * {@link CameraCaptureSession.StateCallback#onConfigured} callback will be called.</p>
222 * <p>If a prior CameraCaptureSession already exists when a new one is created, the previous
223 * session is closed. Any in-progress capture requests made on the prior session will be
224 * completed before the new session is configured and is able to start capturing its own
225 * requests. To minimize the transition time, the {@link CameraCaptureSession#abortCaptures}
226 * call can be used to discard the remaining requests for the prior capture session before a new
227 * one is created. Note that once the new session is created, the old one can no longer have its
228 * captures aborted.</p>
230 * <p>Using larger resolution outputs, or more outputs, can result in slower
231 * output rate from the device.</p>
233 * <p>Configuring a session with an empty or null list will close the current session, if
234 * any. This can be used to release the current session's target surfaces for another use.</p>
236 * <p>While any of the sizes from {@link StreamConfigurationMap#getOutputSizes} can be used when
237 * a single output stream is configured, a given camera device may not be able to support all
238 * combination of sizes, formats, and targets when multiple outputs are configured at once. The
239 * tables below list the maximum guaranteed resolutions for combinations of streams and targets,
240 * given the capabilities of the camera device.</p>
242 * <p>If an application tries to create a session using a set of targets that exceed the limits
243 * described in the below tables, one of three possibilities may occur. First, the session may
244 * be successfully created and work normally. Second, the session may be successfully created,
245 * but the camera device won't meet the frame rate guarantees as described in
246 * {@link StreamConfigurationMap#getOutputMinFrameDuration}. Or third, if the output set
247 * cannot be used at all, session creation will fail entirely, with
248 * {@link CameraCaptureSession.StateListener#onConfigureFailed} being invoked.</p>
250 * <p>For the type column, {@code PRIV} refers to any target whose available sizes are found
251 * using {@link StreamConfigurationMap#getOutputSizes(Class)} with no direct application-visible
252 * format, {@code YUV} refers to a target Surface using the
253 * {@link android.graphics.ImageFormat#YUV_420_888} format, {@code JPEG} refers to the
254 * {@link android.graphics.ImageFormat#JPEG} format, and {@code RAW} refers to the
255 * {@link android.graphics.ImageFormat#RAW_SENSOR} format.</p>
257 * <p>For the maximum size column, {@code PREVIEW} refers to the best size match to the
258 * device's screen resolution, or to 1080p ({@code 1920x1080}), whichever is
259 * smaller. {@code RECORD} refers to the camera device's maximum supported recording resolution,
260 * as determined by {@link android.media.CamcorderProfile}. And {@code MAXIMUM} refers to the
261 * camera device's maximum output resolution for that format or target from
262 * {@link StreamConfigurationMap#getOutputSizes}.</p>
264 * <p>To use these tables, determine the number and the formats/targets of outputs needed, and
265 * find the row(s) of the table with those targets. The sizes indicate the maximum set of sizes
266 * that can be used; it is guaranteed that for those targets, the listed sizes and anything
267 * smaller from the list given by {@link StreamConfigurationMap#getOutputSizes} can be
268 * successfully used to create a session. For example, if a row indicates that a 8 megapixel
269 * (MP) YUV_420_888 output can be used together with a 2 MP {@code PRIV} output, then a session
270 * can be created with targets {@code [8 MP YUV, 2 MP PRIV]} or targets {@code [2 MP YUV, 2 MP
271 * PRIV]}; but a session with targets {@code [8 MP YUV, 4 MP PRIV]}, targets {@code [4 MP YUV, 4
272 * MP PRIV]}, or targets {@code [8 MP PRIV, 2 MP YUV]} would not be guaranteed to work, unless
273 * some other row of the table lists such a combination.</p>
276 * #rb { border-right-width: thick; }
278 * <p>Legacy devices ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL}
279 * {@code == }{@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY}) support at
280 * least the following stream combinations:
283 * <tr><th colspan="7">LEGACY-level guaranteed configurations</th></tr>
284 * <tr> <th colspan="2" id="rb">Target 1</th> <th colspan="2" id="rb">Target 2</th> <th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
285 * <tr> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th></tr>
286 * <tr> <td>{@code PRIV}</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>Simple preview, GPU video processing, or no-preview video recording.</td> </tr>
287 * <tr> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-viewfinder still image capture.</td> </tr>
288 * <tr> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>In-application video/image processing.</td> </tr>
289 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>Standard still imaging.</td> </tr>
290 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>In-app processing plus still capture.</td> </tr>
291 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td colspan="2" id="rb"></td> <td>Standard recording.</td> </tr>
292 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td colspan="2" id="rb"></td> <td>Preview plus in-app processing.</td> </tr>
293 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td>Still capture plus in-app processing.</td> </tr>
297 * <p>Limited-capability ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL}
298 * {@code == }{@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED}) devices
299 * support at least the following stream combinations in addition to those for
300 * {@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY} devices:
303 * <tr><th colspan="7">LIMITED-level additional guaranteed configurations</th></tr>
304 * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
305 * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th></tr>
306 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code RECORD }</td> <td colspan="2" id="rb"></td> <td>High-resolution video recording with preview.</td> </tr>
307 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code RECORD }</td> <td colspan="2" id="rb"></td> <td>High-resolution in-app video processing with preview.</td> </tr>
308 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code RECORD }</td> <td colspan="2" id="rb"></td> <td>Two-input in-app video processing.</td> </tr>
309 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code RECORD }</td> <td>{@code JPEG}</td><td id="rb">{@code RECORD }</td> <td>High-resolution recording with video snapshot.</td> </tr>
310 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code RECORD }</td> <td>{@code JPEG}</td><td id="rb">{@code RECORD }</td> <td>High-resolution in-app processing with video snapshot.</td> </tr>
311 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td>Two-input in-app processing with still capture.</td> </tr>
315 * <p>FULL-capability ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL}
316 * {@code == }{@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL}) devices
317 * support at least the following stream combinations in addition to those for
318 * {@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
321 * <tr><th colspan="7">FULL-capability additional guaranteed configurations</th></tr>
322 * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
323 * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
324 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
325 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
326 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
327 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td>Video recording with maximum-size video snapshot</td> </tr>
328 * <tr> <td>{@code YUV }</td><td id="rb">{@code 640x480}</td> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td>Standard video recording plus maximum-resolution in-app processing.</td> </tr>
329 * <tr> <td>{@code YUV }</td><td id="rb">{@code 640x480}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td>Preview plus two-input maximum-resolution in-app processing.</td> </tr>
333 * <p>RAW-capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES} includes
334 * {@link CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}) devices additionally support
335 * at least the following stream combinations on both
336 * {@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL} and
337 * {@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
340 * <tr><th colspan="7">RAW-capability additional guaranteed configurations</th></tr>
341 * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
342 * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
343 * <tr> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-preview DNG capture.</td> </tr>
344 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>Standard DNG capture.</td> </tr>
345 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td colspan="2" id="rb"></td> <td>In-app processing plus DNG capture.</td> </tr>
346 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td>Video recording with DNG capture.</td> </tr>
347 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td>Preview with in-app processing and DNG capture.</td> </tr>
348 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td>Two-input in-app processing plus DNG capture.</td> </tr>
349 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td>Still capture with simultaneous JPEG and DNG.</td> </tr>
350 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code JPEG}</td><td id="rb">{@code MAXIMUM}</td> <td>{@code RAW }</td><td id="rb">{@code MAXIMUM}</td> <td>In-app processing with simultaneous JPEG and DNG.</td> </tr>
354 * <p>BURST-capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES} includes
355 * {@link CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE BURST_CAPTURE}) devices
356 * support at least the below stream combinations in addition to those for
357 * {@link CameraMetadata#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices. Note that all
358 * FULL-level devices support the BURST capability, and the below list is a strict subset of the
359 * list for FULL-level devices, so this table is only relevant for LIMITED-level devices that
360 * support the BURST_CAPTURE capability.
363 * <tr><th colspan="5">BURST-capability additional guaranteed configurations</th></tr>
364 * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th rowspan="2">Sample use case(s)</th> </tr>
365 * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
366 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code PRIV}</td><td id="rb">{@code MAXIMUM}</td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
367 * <tr> <td>{@code PRIV}</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
368 * <tr> <td>{@code YUV }</td><td id="rb">{@code PREVIEW}</td> <td>{@code YUV }</td><td id="rb">{@code MAXIMUM}</td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
372 * <p>Since the capabilities of camera devices vary greatly, a given camera device may support
373 * target combinations with sizes outside of these guarantees, but this can only be tested for
374 * by attempting to create a session with such targets.</p>
376 * @param outputs The new set of Surfaces that should be made available as
377 * targets for captured image data.
378 * @param callback The callback to notify about the status of the new capture session.
379 * @param handler The handler on which the callback should be invoked, or {@code null} to use
380 * the current thread's {@link android.os.Looper looper}.
382 * @throws IllegalArgumentException if the set of output Surfaces do not meet the requirements,
383 * the callback is null, or the handler is null but the current
384 * thread has no looper.
385 * @throws CameraAccessException if the camera device is no longer connected or has
386 * encountered a fatal error
387 * @throws IllegalStateException if the camera device has been closed
389 * @see CameraCaptureSession
390 * @see StreamConfigurationMap#getOutputFormats()
391 * @see StreamConfigurationMap#getOutputSizes(int)
392 * @see StreamConfigurationMap#getOutputSizes(Class)
394 public abstract void createCaptureSession(List<Surface> outputs,
395 CameraCaptureSession.StateCallback callback, Handler handler)
396 throws CameraAccessException;
399 * <p>Create a new camera capture session by providing the target output set of Surfaces and
400 * its corresponding surface configuration to the camera device.</p>
402 * @see #createCaptureSession
403 * @see OutputConfiguration
407 public abstract void createCaptureSessionByOutputConfiguration(
408 List<OutputConfiguration> outputConfigurations,
409 CameraCaptureSession.StateCallback callback, Handler handler)
410 throws CameraAccessException;
412 * Create a new reprocessible camera capture session by providing the desired reprocessing
413 * input Surface configuration and the target output set of Surfaces to the camera device.
415 * <p>If a camera device supports YUV reprocessing
416 * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING}) or OPAQUE
418 * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_OPAQUE_REPROCESSING}), besides
419 * the capture session created via {@link #createCaptureSession}, the application can also
420 * create a reprocessible capture session to submit reprocess capture requests in addition to
421 * regular capture requests. A reprocess capture request takes the next available buffer from
422 * the session's input Surface, and sends it through the camera device's processing pipeline
423 * again, to produce buffers for the request's target output Surfaces. No new image data is
424 * captured for a reprocess request. However the input buffer provided by
425 * the application must be captured previously by the same camera device in the same session
426 * directly (e.g. for Zero-Shutter-Lag use case) or indirectly (e.g. combining multiple output
429 * <p>The active reprocessible capture session determines an input {@link Surface} and the set
430 * of potential output Surfaces for the camera devices for each capture request. The application
431 * can use {@link #createCaptureRequest} to create regular capture requests to capture new
432 * images from the camera device, and use {@link #createReprocessCaptureRequest} to create
433 * reprocess capture requests to process buffers from the input {@link Surface}. A request may
434 * use all or only some of the outputs. All the output Surfaces in one capture request will come
435 * from the same source, either from a new capture by the camera device, or from the input
436 * Surface depending on if the request is a reprocess capture request.</p>
438 * <p>Input formats and sizes supported by the camera device can be queried via
439 * {@link StreamConfigurationMap#getInputFormats} and
440 * {@link StreamConfigurationMap#getInputSizes}. For each supported input format, the camera
441 * device supports a set of output formats and sizes for reprocessing that can be queried via
442 * {@link StreamConfigurationMap#getValidOutputFormatsForInput} and
443 * {@link StreamConfigurationMap#getOutputSizes}. While output Surfaces with formats that
444 * aren't valid reprocess output targets for the input configuration can be part of a session,
445 * they cannot be used as targets for a reprocessing request.</p>
447 * <p>Since the application cannot access {@link android.graphics.ImageFormat#PRIVATE} images
448 * directly, an output Surface created by {@link android.media.ImageReader#newOpaqueInstance}
449 * will be considered as intended to be used for reprocessing input and thus the
450 * {@link android.media.ImageReader} size must match one of the supported input sizes for
451 * {@link android.graphics.ImageFormat#PRIVATE} format. Otherwise, creating a reprocessible
452 * capture session will fail.</p>
454 * @param inputConfig The configuration for the input {@link Surface}
455 * @param outputs The new set of Surfaces that should be made available as
456 * targets for captured image data.
457 * @param callback The callback to notify about the status of the new capture session.
458 * @param handler The handler on which the callback should be invoked, or {@code null} to use
459 * the current thread's {@link android.os.Looper looper}.
461 * @throws IllegalArgumentException if the input configuration is null or not supported, the set
462 * of output Surfaces do not meet the requirements, the
463 * callback is null, or the handler is null but the current
464 * thread has no looper.
465 * @throws CameraAccessException if the camera device is no longer connected or has
466 * encountered a fatal error
467 * @throws IllegalStateException if the camera device has been closed
469 * @see CameraCaptureSession
470 * @see StreamConfigurationMap#getInputFormats
471 * @see StreamConfigurationMap#getInputSizes
472 * @see StreamConfigurationMap#getValidOutputFormatsForInput
473 * @see StreamConfigurationMap#getOutputSizes
474 * @see android.media.ImageWriter
475 * @see android.media.ImageReader
477 public abstract void createReprocessibleCaptureSession(InputConfiguration inputConfig,
478 List<Surface> outputs, CameraCaptureSession.StateCallback callback, Handler handler)
479 throws CameraAccessException;
482 * <p>Create a {@link CaptureRequest.Builder} for new capture requests,
483 * initialized with template for a target use case. The settings are chosen
484 * to be the best options for the specific camera device, so it is not
485 * recommended to reuse the same request for a different camera device;
486 * create a builder specific for that device and template and override the
487 * settings as desired, instead.</p>
489 * @param templateType An enumeration selecting the use case for this
490 * request; one of the CameraDevice.TEMPLATE_ values. Not all template
491 * types are supported on every device. See the documentation for each
492 * template type for details.
493 * @return a builder for a capture request, initialized with default
494 * settings for that template, and no output streams
496 * @throws IllegalArgumentException if the templateType is not supported by
498 * @throws CameraAccessException if the camera device is no longer connected or has
499 * encountered a fatal error
500 * @throws IllegalStateException if the camera device has been closed
502 * @see #TEMPLATE_PREVIEW
503 * @see #TEMPLATE_RECORD
504 * @see #TEMPLATE_STILL_CAPTURE
505 * @see #TEMPLATE_VIDEO_SNAPSHOT
506 * @see #TEMPLATE_MANUAL
508 public abstract CaptureRequest.Builder createCaptureRequest(int templateType)
509 throws CameraAccessException;
512 * <p>Create a {@link CaptureRequest.Builder} for a new reprocess {@link CaptureRequest} from a
513 * {@link TotalCaptureResult}.
515 * <p>Each reprocess {@link CaptureRequest} processes one buffer from
516 * {@link CameraCaptureSession}'s input {@link Surface} to all output {@link Surface Surfaces}
517 * included in the reprocess capture request. The reprocess input images must be generated from
518 * one or multiple output images captured from the same camera device. The application can
519 * provide input images to camera device via
520 * {{@link android.media.ImageWriter#queueInputImage ImageWriter#queueInputImage}}.
521 * The application must use the capture result of one of those output images to create a
522 * reprocess capture request so that the camera device can use the information to achieve
523 * optimal reprocess image quality.
525 * @param inputResult The capture result of the output image or one of the output images used
526 * to generate the reprocess input image for this capture request.
528 * @throws IllegalArgumentException if inputResult is null.
529 * @throws CameraAccessException if the camera device is no longer connected or has
530 * encountered a fatal error
531 * @throws IllegalStateException if the camera device has been closed
533 * @see CaptureRequest.Builder
534 * @see TotalCaptureResult
535 * @see CameraDevice#createReprocessibleCaptureSession
536 * @see android.media.ImageWriter
538 public abstract CaptureRequest.Builder createReprocessCaptureRequest(
539 TotalCaptureResult inputResult) throws CameraAccessException;
542 * Close the connection to this camera device as quickly as possible.
544 * <p>Immediately after this call, all calls to the camera device or active session interface
545 * will throw a {@link IllegalStateException}, except for calls to close(). Once the device has
546 * fully shut down, the {@link StateCallback#onClosed} callback will be called, and the camera
547 * is free to be re-opened.</p>
549 * <p>Immediately after this call, besides the final {@link StateCallback#onClosed} calls, no
550 * further callbacks from the device or the active session will occur, and any remaining
551 * submitted capture requests will be discarded, as if
552 * {@link CameraCaptureSession#abortCaptures} had been called, except that no success or failure
553 * callbacks will be invoked.</p>
557 public abstract void close();
560 * A callback objects for receiving updates about the state of a camera device.
562 * <p>A callback instance must be provided to the {@link CameraManager#openCamera} method to
563 * open a camera device.</p>
565 * <p>These state updates include notifications about the device completing startup (
566 * allowing for {@link #createCaptureSession} to be called), about device
567 * disconnection or closure, and about unexpected device errors.</p>
569 * <p>Events about the progress of specific {@link CaptureRequest CaptureRequests} are provided
570 * through a {@link CameraCaptureSession.CaptureCallback} given to the
571 * {@link CameraCaptureSession#capture}, {@link CameraCaptureSession#captureBurst},
572 * {@link CameraCaptureSession#setRepeatingRequest}, or
573 * {@link CameraCaptureSession#setRepeatingBurst} methods.
575 * @see CameraManager#openCamera
577 public static abstract class StateCallback {
579 * An error code that can be reported by {@link #onError}
580 * indicating that the camera device is in use already.
583 * This error can be produced when opening the camera fails.
588 public static final int ERROR_CAMERA_IN_USE = 1;
591 * An error code that can be reported by {@link #onError}
592 * indicating that the camera device could not be opened
593 * because there are too many other open camera devices.
596 * The system-wide limit for number of open cameras has been reached,
597 * and more camera devices cannot be opened until previous instances are
602 * This error can be produced when opening the camera fails.
607 public static final int ERROR_MAX_CAMERAS_IN_USE = 2;
610 * An error code that can be reported by {@link #onError}
611 * indicating that the camera device could not be opened due to a device
614 * @see android.app.admin.DevicePolicyManager#setCameraDisabled(android.content.ComponentName, boolean)
617 public static final int ERROR_CAMERA_DISABLED = 3;
620 * An error code that can be reported by {@link #onError}
621 * indicating that the camera device has encountered a fatal error.
623 * <p>The camera device needs to be re-opened to be used again.</p>
627 public static final int ERROR_CAMERA_DEVICE = 4;
630 * An error code that can be reported by {@link #onError}
631 * indicating that the camera service has encountered a fatal error.
633 * <p>The Android device may need to be shut down and restarted to restore
634 * camera function, or there may be a persistent hardware problem.</p>
636 * <p>An attempt at recovery <i>may</i> be possible by closing the
637 * CameraDevice and the CameraManager, and trying to acquire all resources
638 * again from scratch.</p>
642 public static final int ERROR_CAMERA_SERVICE = 5;
645 * The method called when a camera device has finished opening.
647 * <p>At this point, the camera device is ready to use, and
648 * {@link CameraDevice#createCaptureSession} can be called to set up the first capture
651 * @param camera the camera device that has become opened
653 public abstract void onOpened(CameraDevice camera); // Must implement
656 * The method called when a camera device has been closed with
657 * {@link CameraDevice#close}.
659 * <p>Any attempt to call methods on this CameraDevice in the
660 * future will throw a {@link IllegalStateException}.</p>
662 * <p>The default implementation of this method does nothing.</p>
664 * @param camera the camera device that has become closed
666 public void onClosed(CameraDevice camera) {
667 // Default empty implementation
671 * The method called when a camera device is no longer available for
674 * <p>This callback may be called instead of {@link #onOpened}
675 * if opening the camera fails.</p>
677 * <p>Any attempt to call methods on this CameraDevice will throw a
678 * {@link CameraAccessException}. The disconnection could be due to a
679 * change in security policy or permissions; the physical disconnection
680 * of a removable camera device; or the camera being needed for a
681 * higher-priority use case.</p>
683 * <p>There may still be capture callbacks that are invoked
684 * after this method is called, or new image buffers that are delivered
685 * to active outputs.</p>
687 * <p>The default implementation logs a notice to the system log
688 * about the disconnection.</p>
690 * <p>You should clean up the camera with {@link CameraDevice#close} after
691 * this happens, as it is not recoverable until opening the camera again
692 * after it becomes {@link CameraManager.AvailabilityCallback#onCameraAvailable available}.
695 * @param camera the device that has been disconnected
697 public abstract void onDisconnected(CameraDevice camera); // Must implement
700 * The method called when a camera device has encountered a serious error.
702 * <p>This callback may be called instead of {@link #onOpened}
703 * if opening the camera fails.</p>
705 * <p>This indicates a failure of the camera device or camera service in
706 * some way. Any attempt to call methods on this CameraDevice in the
707 * future will throw a {@link CameraAccessException} with the
708 * {@link CameraAccessException#CAMERA_ERROR CAMERA_ERROR} reason.
711 * <p>There may still be capture completion or camera stream callbacks
712 * that will be called after this error is received.</p>
714 * <p>You should clean up the camera with {@link CameraDevice#close} after
715 * this happens. Further attempts at recovery are error-code specific.</p>
717 * @param camera The device reporting the error
718 * @param error The error code, one of the
719 * {@code StateCallback.ERROR_*} values.
721 * @see #ERROR_CAMERA_DEVICE
722 * @see #ERROR_CAMERA_SERVICE
723 * @see #ERROR_CAMERA_DISABLED
724 * @see #ERROR_CAMERA_IN_USE
726 public abstract void onError(CameraDevice camera, int error); // Must implement
730 * Temporary for migrating to Callback naming
733 public static abstract class StateListener extends StateCallback {
737 * To be inherited by android.hardware.camera2.* code only.
740 public CameraDevice() {}