include/ndk/NdkImage.h

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @addtogroup Media
 * @{
 */

/**
 * @file NdkImage.h
 */

/*
 * This file defines an NDK API.
 * Do not remove methods.
 * Do not change method signatures.
 * Do not change the value of constants.
 * Do not change the size of any of the classes defined in here.
 * Do not reference types that are not part of the NDK.
 * Do not #include files that aren't part of the NDK.
 */

#ifndef _NDK_IMAGE_H
#define _NDK_IMAGE_H

#include <sys/cdefs.h>

#include "NdkMediaError.h"

#if __ANDROID_API__ >= 26
#include <android/hardware_buffer.h>
#endif /* __ANDROID_API__ >= 26 */

#ifdef __cplusplus
extern "C" {
#endif

#if __ANDROID_API__ >= 24

/**
 * AImage is an opaque type that provides access to image generated by {@link AImageReader}.
 */
typedef struct AImage AImage;

// Formats not listed here will not be supported by AImageReader
enum AIMAGE_FORMATS {
    /**
     * 32 bits RGBA format, 8 bits for each of the four channels.
     *
     * <p>
     * Corresponding formats:
     * <ul>
     * <li>AHardwareBuffer: AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM</li>
     * <li>Vulkan: VK_FORMAT_R8G8B8A8_UNORM</li>
     * <li>OpenGL ES: GL_RGBA8</li>
     * </ul>
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see AHardwareBuffer
     */
    AIMAGE_FORMAT_RGBA_8888         = 0x1,

    /**
     * 32 bits RGBX format, 8 bits for each of the four channels.
     *
     * <p>
     * Corresponding formats:
     * <ul>
     * <li>AHardwareBuffer: AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM</li>
     * <li>Vulkan: VK_FORMAT_R8G8B8A8_UNORM</li>
     * <li>OpenGL ES: GL_RGBA8</li>
     * </ul>
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see AHardwareBuffer
     */
    AIMAGE_FORMAT_RGBX_8888         = 0x2,

    /**
     * 24 bits RGB format, 8 bits for each of the three channels.
     *
     * <p>
     * Corresponding formats:
     * <ul>
     * <li>AHardwareBuffer: AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM</li>
     * <li>Vulkan: VK_FORMAT_R8G8B8_UNORM</li>
     * <li>OpenGL ES: GL_RGB8</li>
     * </ul>
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see AHardwareBuffer
     */
    AIMAGE_FORMAT_RGB_888           = 0x3,

    /**
     * 16 bits RGB format, 5 bits for Red channel, 6 bits for Green channel,
     * and 5 bits for Blue channel.
     *
     * <p>
     * Corresponding formats:
     * <ul>
     * <li>AHardwareBuffer: AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM</li>
     * <li>Vulkan: VK_FORMAT_R5G6B5_UNORM_PACK16</li>
     * <li>OpenGL ES: GL_RGB565</li>
     * </ul>
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see AHardwareBuffer
     */
    AIMAGE_FORMAT_RGB_565           = 0x4,

    /**
     * 64 bits RGBA format, 16 bits for each of the four channels.
     *
     * <p>
     * Corresponding formats:
     * <ul>
     * <li>AHardwareBuffer: AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT</li>
     * <li>Vulkan: VK_FORMAT_R16G16B16A16_SFLOAT</li>
     * <li>OpenGL ES: GL_RGBA16F</li>
     * </ul>
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see AHardwareBuffer
     */
    AIMAGE_FORMAT_RGBA_FP16         = 0x16,

    /**
     * Multi-plane Android YUV 420 format.
     *
     * <p>This format is a generic YCbCr format, capable of describing any 4:2:0
     * chroma-subsampled planar or semiplanar buffer (but not fully interleaved),
     * with 8 bits per color sample.</p>
     *
     * <p>Images in this format are always represented by three separate buffers
     * of data, one for each color plane. Additional information always
     * accompanies the buffers, describing the row stride and the pixel stride
     * for each plane.</p>
     *
     * <p>The order of planes is guaranteed such that plane #0 is always Y, plane #1 is always
     * U (Cb), and plane #2 is always V (Cr).</p>
     *
     * <p>The Y-plane is guaranteed not to be interleaved with the U/V planes
     * (in particular, pixel stride is always 1 in {@link AImage_getPlanePixelStride}).</p>
     *
     * <p>The U/V planes are guaranteed to have the same row stride and pixel stride, that is, the
     * return value of {@link AImage_getPlaneRowStride} for the U/V plane are guaranteed to be the
     * same, and the return value of {@link AImage_getPlanePixelStride} for the U/V plane are also
     * guaranteed to be the same.</p>
     *
     * <p>For example, the {@link AImage} object can provide data
     * in this format from a {@link ACameraDevice} through an {@link AImageReader} object.</p>
     *
     * <p>This format is always supported as an output format for the android Camera2 NDK API.</p>
     *
     * @see AImage
     * @see AImageReader
     * @see ACameraDevice
     */
    AIMAGE_FORMAT_YUV_420_888       = 0x23,

    /**
     * Compressed JPEG format.
     *
     * <p>This format is always supported as an output format for the android Camera2 NDK API.</p>
     */
    AIMAGE_FORMAT_JPEG              = 0x100,

    /**
     * 16 bits per pixel raw camera sensor image format, usually representing a single-channel
     * Bayer-mosaic image.
     *
     * <p>The layout of the color mosaic, the maximum and minimum encoding
     * values of the raw pixel data, the color space of the image, and all other
     * needed information to interpret a raw sensor image must be queried from
     * the {@link ACameraDevice} which produced the image.</p>
     */
    AIMAGE_FORMAT_RAW16             = 0x20,

    /**
     * Private raw camera sensor image format, a single channel image with implementation depedent
     * pixel layout.
     *
     * <p>AIMAGE_FORMAT_RAW_PRIVATE is a format for unprocessed raw image buffers coming from an
     * image sensor. The actual structure of buffers of this format is implementation-dependent.</p>
     *
     */
    AIMAGE_FORMAT_RAW_PRIVATE       = 0x24,

    /**
     * Android 10-bit raw format.
     *
     * <p>
     * This is a single-plane, 10-bit per pixel, densely packed (in each row),
     * unprocessed format, usually representing raw Bayer-pattern images coming
     * from an image sensor.
     * </p>
     * <p>
     * In an image buffer with this format, starting from the first pixel of
     * each row, each 4 consecutive pixels are packed into 5 bytes (40 bits).
     * Each one of the first 4 bytes contains the top 8 bits of each pixel, The
     * fifth byte contains the 2 least significant bits of the 4 pixels, the
     * exact layout data for each 4 consecutive pixels is illustrated below
     * (Pi[j] stands for the jth bit of the ith pixel):
     * </p>
     * <table>
     * <tr>
     * <th align="center"></th>
     * <th align="center">bit 7</th>
     * <th align="center">bit 6</th>
     * <th align="center">bit 5</th>
     * <th align="center">bit 4</th>
     * <th align="center">bit 3</th>
     * <th align="center">bit 2</th>
     * <th align="center">bit 1</th>
     * <th align="center">bit 0</th>
     * </tr>
     * <tr>
     * <td align="center">Byte 0:</td>
     * <td align="center">P0[9]</td>
     * <td align="center">P0[8]</td>
     * <td align="center">P0[7]</td>
     * <td align="center">P0[6]</td>
     * <td align="center">P0[5]</td>
     * <td align="center">P0[4]</td>
     * <td align="center">P0[3]</td>
     * <td align="center">P0[2]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 1:</td>
     * <td align="center">P1[9]</td>
     * <td align="center">P1[8]</td>
     * <td align="center">P1[7]</td>
     * <td align="center">P1[6]</td>
     * <td align="center">P1[5]</td>
     * <td align="center">P1[4]</td>
     * <td align="center">P1[3]</td>
     * <td align="center">P1[2]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 2:</td>
     * <td align="center">P2[9]</td>
     * <td align="center">P2[8]</td>
     * <td align="center">P2[7]</td>
     * <td align="center">P2[6]</td>
     * <td align="center">P2[5]</td>
     * <td align="center">P2[4]</td>
     * <td align="center">P2[3]</td>
     * <td align="center">P2[2]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 3:</td>
     * <td align="center">P3[9]</td>
     * <td align="center">P3[8]</td>
     * <td align="center">P3[7]</td>
     * <td align="center">P3[6]</td>
     * <td align="center">P3[5]</td>
     * <td align="center">P3[4]</td>
     * <td align="center">P3[3]</td>
     * <td align="center">P3[2]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 4:</td>
     * <td align="center">P3[1]</td>
     * <td align="center">P3[0]</td>
     * <td align="center">P2[1]</td>
     * <td align="center">P2[0]</td>
     * <td align="center">P1[1]</td>
     * <td align="center">P1[0]</td>
     * <td align="center">P0[1]</td>
     * <td align="center">P0[0]</td>
     * </tr>
     * </table>
     * <p>
     * This format assumes
     * <ul>
     * <li>a width multiple of 4 pixels</li>
     * <li>an even height</li>
     * </ul>
     * </p>
     *
     * <pre>size = row stride * height</pre> where the row stride is in <em>bytes</em>,
     * not pixels.
     *
     * <p>
     * Since this is a densely packed format, the pixel stride is always 0. The
     * application must use the pixel data layout defined in above table to
     * access each row data. When row stride is equal to (width * (10 / 8)), there
     * will be no padding bytes at the end of each row, the entire image data is
     * densely packed. When stride is larger than (width * (10 / 8)), padding
     * bytes will be present at the end of each row.
     * </p>
     * <p>
     * For example, the {@link AImage} object can provide data in this format from a
     * {@link ACameraDevice} (if supported) through a {@link AImageReader} object.
     * The number of planes returned by {@link AImage_getNumberOfPlanes} will always be 1.
     * The pixel stride is undefined ({@link AImage_getPlanePixelStride} will return
     * {@link AMEDIA_ERROR_UNSUPPORTED}), and the {@link AImage_getPlaneRowStride} described the
     * vertical neighboring pixel distance (in bytes) between adjacent rows.
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see ACameraDevice
     */
    AIMAGE_FORMAT_RAW10             = 0x25,

    /**
     * Android 12-bit raw format.
     *
     * <p>
     * This is a single-plane, 12-bit per pixel, densely packed (in each row),
     * unprocessed format, usually representing raw Bayer-pattern images coming
     * from an image sensor.
     * </p>
     * <p>
     * In an image buffer with this format, starting from the first pixel of each
     * row, each two consecutive pixels are packed into 3 bytes (24 bits). The first
     * and second byte contains the top 8 bits of first and second pixel. The third
     * byte contains the 4 least significant bits of the two pixels, the exact layout
     * data for each two consecutive pixels is illustrated below (Pi[j] stands for
     * the jth bit of the ith pixel):
     * </p>
     * <table>
     * <tr>
     * <th align="center"></th>
     * <th align="center">bit 7</th>
     * <th align="center">bit 6</th>
     * <th align="center">bit 5</th>
     * <th align="center">bit 4</th>
     * <th align="center">bit 3</th>
     * <th align="center">bit 2</th>
     * <th align="center">bit 1</th>
     * <th align="center">bit 0</th>
     * </tr>
     * <tr>
     * <td align="center">Byte 0:</td>
     * <td align="center">P0[11]</td>
     * <td align="center">P0[10]</td>
     * <td align="center">P0[ 9]</td>
     * <td align="center">P0[ 8]</td>
     * <td align="center">P0[ 7]</td>
     * <td align="center">P0[ 6]</td>
     * <td align="center">P0[ 5]</td>
     * <td align="center">P0[ 4]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 1:</td>
     * <td align="center">P1[11]</td>
     * <td align="center">P1[10]</td>
     * <td align="center">P1[ 9]</td>
     * <td align="center">P1[ 8]</td>
     * <td align="center">P1[ 7]</td>
     * <td align="center">P1[ 6]</td>
     * <td align="center">P1[ 5]</td>
     * <td align="center">P1[ 4]</td>
     * </tr>
     * <tr>
     * <td align="center">Byte 2:</td>
     * <td align="center">P1[ 3]</td>
     * <td align="center">P1[ 2]</td>
     * <td align="center">P1[ 1]</td>
     * <td align="center">P1[ 0]</td>
     * <td align="center">P0[ 3]</td>
     * <td align="center">P0[ 2]</td>
     * <td align="center">P0[ 1]</td>
     * <td align="center">P0[ 0]</td>
     * </tr>
     * </table>
     * <p>
     * This format assumes
     * <ul>
     * <li>a width multiple of 4 pixels</li>
     * <li>an even height</li>
     * </ul>
     * </p>
     *
     * <pre>size = row stride * height</pre> where the row stride is in <em>bytes</em>,
     * not pixels.
     *
     * <p>
     * Since this is a densely packed format, the pixel stride is always 0. The
     * application must use the pixel data layout defined in above table to
     * access each row data. When row stride is equal to (width * (12 / 8)), there
     * will be no padding bytes at the end of each row, the entire image data is
     * densely packed. When stride is larger than (width * (12 / 8)), padding
     * bytes will be present at the end of each row.
     * </p>
     * <p>
     * For example, the {@link AImage} object can provide data in this format from a
     * {@link ACameraDevice} (if supported) through a {@link AImageReader} object.
     * The number of planes returned by {@link AImage_getNumberOfPlanes} will always be 1.
     * The pixel stride is undefined ({@link AImage_getPlanePixelStride} will return
     * {@link AMEDIA_ERROR_UNSUPPORTED}), and the {@link AImage_getPlaneRowStride} described the
     * vertical neighboring pixel distance (in bytes) between adjacent rows.
     * </p>
     *
     * @see AImage
     * @see AImageReader
     * @see ACameraDevice
     */
    AIMAGE_FORMAT_RAW12             = 0x26,

    /**
     * Android dense depth image format.
     *
     * <p>Each pixel is 16 bits, representing a depth ranging measurement from a depth camera or
     * similar sensor. The 16-bit sample consists of a confidence value and the actual ranging
     * measurement.</p>
     *
     * <p>The confidence value is an estimate of correctness for this sample.  It is encoded in the
     * 3 most significant bits of the sample, with a value of 0 representing 100% confidence, a
     * value of 1 representing 0% confidence, a value of 2 representing 1/7, a value of 3
     * representing 2/7, and so on.</p>
     *
     * <p>As an example, the following sample extracts the range and confidence from the first pixel
     * of a DEPTH16-format {@link AImage}, and converts the confidence to a floating-point value
     * between 0 and 1.f inclusive, with 1.f representing maximum confidence:
     *
     * <pre>
     *    uint16_t* data;
     *    int dataLength;
     *    AImage_getPlaneData(image, 0, (uint8_t**)&data, &dataLength);
     *    uint16_t depthSample = data[0];
     *    uint16_t depthRange = (depthSample & 0x1FFF);
     *    uint16_t depthConfidence = ((depthSample >> 13) & 0x7);
     *    float depthPercentage = depthConfidence == 0 ? 1.f : (depthConfidence - 1) / 7.f;
     * </pre>
     * </p>
     *
     * <p>This format assumes
     * <ul>
     * <li>an even width</li>
     * <li>an even height</li>
     * <li>a horizontal stride multiple of 16 pixels</li>
     * </ul>
     * </p>
     *
     * <pre> y_size = stride * height </pre>
     *
     * When produced by a camera, the units for the range are millimeters.
     */
    AIMAGE_FORMAT_DEPTH16           = 0x44363159,

    /**
     * Android sparse depth point cloud format.
     *
     * <p>A variable-length list of 3D points plus a confidence value, with each point represented
     * by four floats; first the X, Y, Z position coordinates, and then the confidence value.</p>
     *
     * <p>The number of points is ((size of the buffer in bytes) / 16).
     *
     * <p>The coordinate system and units of the position values depend on the source of the point
     * cloud data. The confidence value is between 0.f and 1.f, inclusive, with 0 representing 0%
     * confidence and 1.f representing 100% confidence in the measured position values.</p>
     *
     * <p>As an example, the following code extracts the first depth point in a DEPTH_POINT_CLOUD
     * format {@link AImage}:
     * <pre>
     *    float* data;
     *    int dataLength;
     *    AImage_getPlaneData(image, 0, (uint8_t**)&data, &dataLength);
     *    float x = data[0];
     *    float y = data[1];
     *    float z = data[2];
     *    float confidence = data[3];
     * </pre>
     *
     */
    AIMAGE_FORMAT_DEPTH_POINT_CLOUD = 0x101,

    /**
     * Android private opaque image format.
     *
     * <p>This format is not currently supported by {@link AImageReader}.</p>
     */
    AIMAGE_FORMAT_PRIVATE           = 0x22
};

/**
 * Data type describing an cropped rectangle returned by {@link AImage_getCropRect}.
 *
 * <p>Note that the right and bottom coordinates are exclusive, so the width of the rectangle is
 * (right - left) and the height of the rectangle is (bottom - top).</p>
 */
typedef struct AImageCropRect {
    int32_t left;
    int32_t top;
    int32_t right;
    int32_t bottom;
} AImageCropRect;

/**
 * Return the image back the the system and delete the AImage object from memory.
 *
 * <p>Do NOT use the image pointer after this method returns.
 * Note that if the parent {@link AImageReader} is closed, all the {@link AImage} objects acquired
 * from the parent reader will be returned to system. All AImage_* methods except this method will
 * return {@link AMEDIA_ERROR_INVALID_OBJECT}. Application still needs to call this method on those
 * {@link AImage} objects to fully delete the {@link AImage} object from memory.</p>
 *
 * @param image The {@link AImage} to be deleted.
 */
void AImage_delete(AImage* image);

/**
 * Query the width of the input {@link AImage}.
 *
 * @param image the {@link AImage} of interest.
 * @param width the width of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or width is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getWidth(const AImage* image, /*out*/int32_t* width);

/**
 * Query the height of the input {@link AImage}.
 *
 * @param image the {@link AImage} of interest.
 * @param height the height of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or height is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getHeight(const AImage* image, /*out*/int32_t* height);

/**
 * Query the format of the input {@link AImage}.
 *
 * <p>The format value will be one of AIMAGE_FORMAT_* enum value.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param format the format of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or format is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getFormat(const AImage* image, /*out*/int32_t* format);

/**
 * Query the cropped rectangle of the input {@link AImage}.
 *
 * <p>The crop rectangle specifies the region of valid pixels in the image, using coordinates in the
 * largest-resolution plane.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param rect the cropped rectangle of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or rect is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getCropRect(const AImage* image, /*out*/AImageCropRect* rect);

/**
 * Query the timestamp of the input {@link AImage}.
 *
 * <p>
 * The timestamp is measured in nanoseconds, and is normally monotonically increasing. The
 * timestamps for the images from different sources may have different timebases therefore may not
 * be comparable. The specific meaning and timebase of the timestamp depend on the source providing
 * images. For images generated by camera, the timestamp value will match
 * {@link ACAMERA_SENSOR_TIMESTAMP} of the {@link ACameraMetadata} in
 * {@link ACameraCaptureSession_captureCallbacks#onCaptureStarted} and
 * {@link ACameraCaptureSession_captureCallbacks#onCaptureCompleted} callback.
 * </p>
 *
 * @param image the {@link AImage} of interest.
 * @param timestampNs the timestamp of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or timestampNs is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getTimestamp(const AImage* image, /*out*/int64_t* timestampNs);

/**
 * Query the number of planes of the input {@link AImage}.
 *
 * <p>The number of plane of an {@link AImage} is determined by its format, which can be queried by
 * {@link AImage_getFormat} method.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param numPlanes the number of planes of the image will be filled here if the method call
 *         succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or numPlanes is NULL.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li></ul>
 */
media_status_t AImage_getNumberOfPlanes(const AImage* image, /*out*/int32_t* numPlanes);

/**
 * Query the pixel stride of the input {@link AImage}.
 *
 * <p>This is the distance between two consecutive pixel values in a row of pixels. It may be
 * larger than the size of a single pixel to account for interleaved image data or padded formats.
 * Note that pixel stride is undefined for some formats such as {@link AIMAGE_FORMAT_RAW_PRIVATE},
 * and calling this method on images of these formats will cause {@link AMEDIA_ERROR_UNSUPPORTED}
 * being returned.
 * For formats where pixel stride is well defined, the pixel stride is always greater than 0.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param planeIdx the index of the plane. Must be less than the number of planes of input image.
 * @param pixelStride the pixel stride of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or pixelStride is NULL, or planeIdx
 *                 is out of the range of [0, numOfPlanes - 1].</li>
 *         <li>{@link AMEDIA_ERROR_UNSUPPORTED} if pixel stride is undefined for the format of input
 *                 image.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li>
 *         <li>{@link AMEDIA_IMGREADER_CANNOT_LOCK_IMAGE} if the {@link AImage} cannot be locked
 *                 for CPU access.</li></ul>
 */
media_status_t AImage_getPlanePixelStride(
        const AImage* image, int planeIdx, /*out*/int32_t* pixelStride);

/**
 * Query the row stride of the input {@link AImage}.
 *
 * <p>This is the distance between the start of two consecutive rows of pixels in the image. Note
 * that row stried is undefined for some formats such as {@link AIMAGE_FORMAT_RAW_PRIVATE}, and
 * calling this method on images of these formats will cause {@link AMEDIA_ERROR_UNSUPPORTED}
 * being returned.
 * For formats where row stride is well defined, the row stride is always greater than 0.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param planeIdx the index of the plane. Must be less than the number of planes of input image.
 * @param rowStride the row stride of the image will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or rowStride is NULL, or planeIdx
 *                 is out of the range of [0, numOfPlanes - 1].</li>
 *         <li>{@link AMEDIA_ERROR_UNSUPPORTED} if row stride is undefined for the format of input
 *                 image.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li>
 *         <li>{@link AMEDIA_IMGREADER_CANNOT_LOCK_IMAGE} if the {@link AImage} cannot be locked
 *                 for CPU access.</li></ul>
 */
media_status_t AImage_getPlaneRowStride(
        const AImage* image, int planeIdx, /*out*/int32_t* rowStride);

/**
 * Get the data pointer of the input image for direct application access.
 *
 * <p>Note that once the {@link AImage} or the parent {@link AImageReader} is deleted, the data
 * pointer from previous AImage_getPlaneData call becomes invalid. Do NOT use it after the
 * {@link AImage} or the parent {@link AImageReader} is deleted.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param planeIdx the index of the plane. Must be less than the number of planes of input image.
 * @param data the data pointer of the image will be filled here if the method call succeeeds.
 * @param dataLength the valid length of data will be filled here if the method call succeeeds.
 *
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image, data or dataLength is NULL, or
 *                 planeIdx is out of the range of [0, numOfPlanes - 1].</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_OBJECT} if the {@link AImageReader} generated this
 *                 image has been deleted.</li>
 *         <li>{@link AMEDIA_IMGREADER_CANNOT_LOCK_IMAGE} if the {@link AImage} cannot be locked
 *                 for CPU access.</li></ul>
 */
media_status_t AImage_getPlaneData(
        const AImage* image, int planeIdx,
        /*out*/uint8_t** data, /*out*/int* dataLength);

#endif /* __ANDROID_API__ >= 24 */

#if __ANDROID_API__ >= 26

/*
 * Return the image back the the system and delete the AImage object from memory asynchronously.
 *
 * <p>Similar to {@link AImage_delete}, do NOT use the image pointer after this method returns.
 * However, the caller can still hold on to the {@link AHardwareBuffer} returned from this image and
 * signal the release of the hardware buffer back to the {@link AImageReader}'s queue using
 * releaseFenceFd.</p>
 *
 * @param image The {@link AImage} to be deleted.
 * @param releaseFenceFd A sync fence fd defined in {@link sync.h}, which signals the release of
 *         underlying {@link AHardwareBuffer}.
 *
 * @see sync.h
 */
void AImage_deleteAsync(AImage* image, int releaseFenceFd);

/**
 * Get the hardware buffer handle of the input image intended for GPU and/or hardware access.
 *
 * <p>Note that no reference on the returned {@link AHardwareBuffer} handle is acquired
 * automatically. Once the {@link AImage} or the parent {@link AImageReader} is deleted, the
 * {@link AHardwareBuffer} handle from previous {@link AImage_getHardwareBuffer} becomes
 * invalid.</p>
 *
 * <p>If the caller ever needs to hold on a reference to the {@link AHardwareBuffer} handle after
 * the {@link AImage} or the parent {@link AImageReader} is deleted, it must call {@link
 * AHardwareBuffer_acquire} to acquire an extra reference, and call {@link AHardwareBuffer_release}
 * once it has finished using it in order to properly deallocate the underlying memory managed by
 * {@link AHardwareBuffer}. If the caller has acquired extra reference on an {@link AHardwareBuffer}
 * returned from this function, it must also listen to {@link onBufferFreed} callback to be
 * notified when the buffer is no longer used by {@link AImageReader}.</p>
 *
 * @param image the {@link AImage} of interest.
 * @param outBuffer The memory area pointed to by buffer will contain the acquired AHardwareBuffer
 *         handle.
 * @return <ul>
 *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
 *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if image or buffer is NULL</li></ul>
 *
 * @see AImageReader_ImageCallback
 */
media_status_t AImage_getHardwareBuffer(const AImage* image, /*out*/AHardwareBuffer** buffer);

#endif /* __ANDROID_API__ >= 26 */

#ifdef __cplusplus
} // extern "C"
#endif

#endif //_NDK_IMAGE_H

/** @} */