1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
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
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17#define LOG_TAG "Legacy-CameraDevice-JNI"
18// #define LOG_NDEBUG 0
19#include <utils/Log.h>
20#include <utils/Errors.h>
21#include <utils/Trace.h>
22#include <camera/CameraUtils.h>
23
24#include "jni.h"
25#include "JNIHelp.h"
26#include "android_runtime/AndroidRuntime.h"
27#include "android_runtime/android_view_Surface.h"
28#include "android_runtime/android_graphics_SurfaceTexture.h"
29
30#include <gui/Surface.h>
31#include <gui/IGraphicBufferProducer.h>
32#include <ui/GraphicBuffer.h>
33#include <system/window.h>
34#include <hardware/camera3.h>
35#include <system/camera_metadata.h>
36
37#include <stdint.h>
38#include <inttypes.h>
39
40using namespace android;
41
42// fully-qualified class name
43#define CAMERA_DEVICE_CLASS_NAME "android/hardware/camera2/legacy/LegacyCameraDevice"
44#define CAMERA_DEVICE_BUFFER_SLACK  3
45#define DONT_CARE 0
46
47#define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a)))
48
49#define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) )
50
51/**
52 * Convert from RGB 888 to Y'CbCr using the conversion specified in JFIF v1.02
53 */
54static void rgbToYuv420(uint8_t* rgbBuf, size_t width, size_t height, uint8_t* yPlane,
55        uint8_t* uPlane, uint8_t* vPlane, size_t chromaStep, size_t yStride, size_t chromaStride) {
56    uint8_t R, G, B;
57    size_t index = 0;
58    for (size_t j = 0; j < height; j++) {
59        uint8_t* u = uPlane;
60        uint8_t* v = vPlane;
61        uint8_t* y = yPlane;
62        bool jEven = (j & 1) == 0;
63        for (size_t i = 0; i < width; i++) {
64            R = rgbBuf[index++];
65            G = rgbBuf[index++];
66            B = rgbBuf[index++];
67            *y++ = (77 * R + 150 * G +  29 * B) >> 8;
68            if (jEven && (i & 1) == 0) {
69                *v = (( -43 * R - 85 * G + 128 * B) >> 8) + 128;
70                *u = (( 128 * R - 107 * G - 21 * B) >> 8) + 128;
71                u += chromaStep;
72                v += chromaStep;
73            }
74            // Skip alpha
75            index++;
76        }
77        yPlane += yStride;
78        if (jEven) {
79            uPlane += chromaStride;
80            vPlane += chromaStride;
81        }
82    }
83}
84
85static void rgbToYuv420(uint8_t* rgbBuf, size_t width, size_t height, android_ycbcr* ycbcr) {
86    size_t cStep = ycbcr->chroma_step;
87    size_t cStride = ycbcr->cstride;
88    size_t yStride = ycbcr->ystride;
89    ALOGV("%s: yStride is: %zu, cStride is: %zu, cStep is: %zu", __FUNCTION__, yStride, cStride,
90            cStep);
91    rgbToYuv420(rgbBuf, width, height, reinterpret_cast<uint8_t*>(ycbcr->y),
92            reinterpret_cast<uint8_t*>(ycbcr->cr), reinterpret_cast<uint8_t*>(ycbcr->cb),
93            cStep, yStride, cStride);
94}
95
96static status_t configureSurface(const sp<ANativeWindow>& anw,
97                                 int32_t width,
98                                 int32_t height,
99                                 int32_t pixelFmt,
100                                 int32_t maxBufferSlack) {
101    status_t err = NO_ERROR;
102    err = native_window_set_buffers_dimensions(anw.get(), width, height);
103    if (err != NO_ERROR) {
104        ALOGE("%s: Failed to set native window buffer dimensions, error %s (%d).", __FUNCTION__,
105                strerror(-err), err);
106        return err;
107    }
108
109    err = native_window_set_buffers_format(anw.get(), pixelFmt);
110    if (err != NO_ERROR) {
111        ALOGE("%s: Failed to set native window buffer format, error %s (%d).", __FUNCTION__,
112                strerror(-err), err);
113        return err;
114    }
115
116    err = native_window_set_usage(anw.get(), GRALLOC_USAGE_SW_WRITE_OFTEN);
117    if (err != NO_ERROR) {
118        ALOGE("%s: Failed to set native window usage flag, error %s (%d).", __FUNCTION__,
119                strerror(-err), err);
120        return err;
121    }
122
123    int minUndequeuedBuffers;
124    err = anw.get()->query(anw.get(),
125            NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS,
126            &minUndequeuedBuffers);
127    if (err != NO_ERROR) {
128        ALOGE("%s: Failed to get native window min undequeued buffers, error %s (%d).",
129                __FUNCTION__, strerror(-err), err);
130        return err;
131    }
132
133    ALOGV("%s: Setting buffer count to %d, size to (%dx%d), fmt (0x%x)", __FUNCTION__,
134          maxBufferSlack + 1 + minUndequeuedBuffers,
135          width, height, pixelFmt);
136    err = native_window_set_buffer_count(anw.get(), maxBufferSlack + 1 + minUndequeuedBuffers);
137    if (err != NO_ERROR) {
138        ALOGE("%s: Failed to set native window buffer count, error %s (%d).", __FUNCTION__,
139                strerror(-err), err);
140        return err;
141    }
142    return NO_ERROR;
143}
144
145/**
146 * Produce a frame in the given surface.
147 *
148 * Args:
149 *    anw - a surface to produce a frame in.
150 *    pixelBuffer - image buffer to generate a frame from.
151 *    width - width of the pixelBuffer in pixels.
152 *    height - height of the pixelBuffer in pixels.
153 *    pixelFmt - format of the pixelBuffer, one of:
154 *               HAL_PIXEL_FORMAT_YCrCb_420_SP,
155 *               HAL_PIXEL_FORMAT_YCbCr_420_888,
156 *               HAL_PIXEL_FORMAT_BLOB
157 *    bufSize - the size of the pixelBuffer in bytes.
158 */
159static status_t produceFrame(const sp<ANativeWindow>& anw,
160                             uint8_t* pixelBuffer,
161                             int32_t bufWidth, // Width of the pixelBuffer
162                             int32_t bufHeight, // Height of the pixelBuffer
163                             int32_t pixelFmt, // Format of the pixelBuffer
164                             int32_t bufSize) {
165    ATRACE_CALL();
166    status_t err = NO_ERROR;
167    ANativeWindowBuffer* anb;
168    ALOGV("%s: Dequeue buffer from %p %dx%d (fmt=%x, size=%x)",
169            __FUNCTION__, anw.get(), bufWidth, bufHeight, pixelFmt, bufSize);
170
171    if (anw == 0) {
172        ALOGE("%s: anw must not be NULL", __FUNCTION__);
173        return BAD_VALUE;
174    } else if (pixelBuffer == NULL) {
175        ALOGE("%s: pixelBuffer must not be NULL", __FUNCTION__);
176        return BAD_VALUE;
177    } else if (bufWidth < 0) {
178        ALOGE("%s: width must be non-negative", __FUNCTION__);
179        return BAD_VALUE;
180    } else if (bufHeight < 0) {
181        ALOGE("%s: height must be non-negative", __FUNCTION__);
182        return BAD_VALUE;
183    } else if (bufSize < 0) {
184        ALOGE("%s: bufSize must be non-negative", __FUNCTION__);
185        return BAD_VALUE;
186    }
187
188    size_t width = static_cast<size_t>(bufWidth);
189    size_t height = static_cast<size_t>(bufHeight);
190    size_t bufferLength = static_cast<size_t>(bufSize);
191
192    // TODO: Switch to using Surface::lock and Surface::unlockAndPost
193    err = native_window_dequeue_buffer_and_wait(anw.get(), &anb);
194    if (err != NO_ERROR) return err;
195
196    sp<GraphicBuffer> buf(new GraphicBuffer(anb, /*keepOwnership*/false));
197    uint32_t grallocBufWidth = buf->getWidth();
198    uint32_t grallocBufHeight = buf->getHeight();
199    uint32_t grallocBufStride = buf->getStride();
200    if (grallocBufWidth != width || grallocBufHeight != height) {
201        ALOGE("%s: Received gralloc buffer with bad dimensions %" PRIu32 "x%" PRIu32
202                ", expecting dimensions %zu x %zu",  __FUNCTION__, grallocBufWidth,
203                grallocBufHeight, width, height);
204        return BAD_VALUE;
205    }
206
207    int32_t bufFmt = 0;
208    err = anw->query(anw.get(), NATIVE_WINDOW_FORMAT, &bufFmt);
209    if (err != NO_ERROR) {
210        ALOGE("%s: Error while querying surface pixel format %s (%d).", __FUNCTION__,
211                strerror(-err), err);
212        return err;
213    }
214
215    uint64_t tmpSize = (pixelFmt == HAL_PIXEL_FORMAT_BLOB) ? grallocBufWidth :
216            4 * grallocBufHeight * grallocBufWidth;
217    if (bufFmt != pixelFmt) {
218        if (bufFmt == HAL_PIXEL_FORMAT_RGBA_8888 && pixelFmt == HAL_PIXEL_FORMAT_BLOB) {
219            ALOGV("%s: Using BLOB to RGBA format override.", __FUNCTION__);
220            tmpSize = 4 * (grallocBufWidth + grallocBufStride * (grallocBufHeight - 1));
221        } else {
222            ALOGW("%s: Format mismatch in produceFrame: expecting format %#" PRIx32
223                    ", but received buffer with format %#" PRIx32, __FUNCTION__, pixelFmt, bufFmt);
224        }
225    }
226
227    if (tmpSize > SIZE_MAX) {
228        ALOGE("%s: Overflow calculating size, buffer with dimens %zu x %zu is absurdly large...",
229                __FUNCTION__, width, height);
230        return BAD_VALUE;
231    }
232
233    size_t totalSizeBytes = tmpSize;
234
235    ALOGV("%s: Pixel format chosen: %x", __FUNCTION__, pixelFmt);
236    switch(pixelFmt) {
237        case HAL_PIXEL_FORMAT_YCrCb_420_SP: {
238            if (bufferLength < totalSizeBytes) {
239                ALOGE("%s: PixelBuffer size %zu too small for given dimensions",
240                        __FUNCTION__, bufferLength);
241                return BAD_VALUE;
242            }
243            uint8_t* img = NULL;
244            ALOGV("%s: Lock buffer from %p for write", __FUNCTION__, anw.get());
245            err = buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
246            if (err != NO_ERROR) return err;
247
248            uint8_t* yPlane = img;
249            uint8_t* uPlane = img + height * width;
250            uint8_t* vPlane = uPlane + 1;
251            size_t chromaStep = 2;
252            size_t yStride = width;
253            size_t chromaStride = width;
254
255            rgbToYuv420(pixelBuffer, width, height, yPlane,
256                    uPlane, vPlane, chromaStep, yStride, chromaStride);
257            break;
258        }
259        case HAL_PIXEL_FORMAT_YV12: {
260            if (bufferLength < totalSizeBytes) {
261                ALOGE("%s: PixelBuffer size %zu too small for given dimensions",
262                        __FUNCTION__, bufferLength);
263                return BAD_VALUE;
264            }
265
266            if ((width & 1) || (height & 1)) {
267                ALOGE("%s: Dimens %zu x %zu are not divisible by 2.", __FUNCTION__, width, height);
268                return BAD_VALUE;
269            }
270
271            uint8_t* img = NULL;
272            ALOGV("%s: Lock buffer from %p for write", __FUNCTION__, anw.get());
273            err = buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
274            if (err != NO_ERROR) {
275                ALOGE("%s: Error %s (%d) while locking gralloc buffer for write.", __FUNCTION__,
276                        strerror(-err), err);
277                return err;
278            }
279
280            uint32_t stride = buf->getStride();
281            ALOGV("%s: stride is: %" PRIu32, __FUNCTION__, stride);
282            LOG_ALWAYS_FATAL_IF(stride % 16, "Stride is not 16 pixel aligned %d", stride);
283
284            uint32_t cStride = ALIGN(stride / 2, 16);
285            size_t chromaStep = 1;
286
287            uint8_t* yPlane = img;
288            uint8_t* crPlane = img + static_cast<uint32_t>(height) * stride;
289            uint8_t* cbPlane = crPlane + cStride * static_cast<uint32_t>(height) / 2;
290
291            rgbToYuv420(pixelBuffer, width, height, yPlane,
292                    crPlane, cbPlane, chromaStep, stride, cStride);
293            break;
294        }
295        case HAL_PIXEL_FORMAT_YCbCr_420_888: {
296            // Software writes with YCbCr_420_888 format are unsupported
297            // by the gralloc module for now
298            if (bufferLength < totalSizeBytes) {
299                ALOGE("%s: PixelBuffer size %zu too small for given dimensions",
300                        __FUNCTION__, bufferLength);
301                return BAD_VALUE;
302            }
303            android_ycbcr ycbcr = android_ycbcr();
304            ALOGV("%s: Lock buffer from %p for write", __FUNCTION__, anw.get());
305
306            err = buf->lockYCbCr(GRALLOC_USAGE_SW_WRITE_OFTEN, &ycbcr);
307            if (err != NO_ERROR) {
308                ALOGE("%s: Failed to lock ycbcr buffer, error %s (%d).", __FUNCTION__,
309                        strerror(-err), err);
310                return err;
311            }
312            rgbToYuv420(pixelBuffer, width, height, &ycbcr);
313            break;
314        }
315        case HAL_PIXEL_FORMAT_BLOB: {
316            int8_t* img = NULL;
317            struct camera3_jpeg_blob footer = {
318                jpeg_blob_id: CAMERA3_JPEG_BLOB_ID,
319                jpeg_size: (uint32_t)bufferLength
320            };
321
322            size_t totalJpegSize = bufferLength + sizeof(footer);
323            totalJpegSize = (totalJpegSize + 3) & ~0x3; // round up to nearest octonibble
324
325            if (totalJpegSize > totalSizeBytes) {
326                ALOGE("%s: Pixel buffer needs size %zu, cannot fit in gralloc buffer of size %zu",
327                        __FUNCTION__, totalJpegSize, totalSizeBytes);
328                return BAD_VALUE;
329            }
330
331            err = buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
332            if (err != NO_ERROR) {
333                ALOGE("%s: Failed to lock buffer, error %s (%d).", __FUNCTION__, strerror(-err),
334                        err);
335                return err;
336            }
337
338            memcpy(img, pixelBuffer, bufferLength);
339            memcpy(img + totalSizeBytes - sizeof(footer), &footer, sizeof(footer));
340            break;
341        }
342        default: {
343            ALOGE("%s: Invalid pixel format in produceFrame: %x", __FUNCTION__, pixelFmt);
344            return BAD_VALUE;
345        }
346    }
347
348    ALOGV("%s: Unlock buffer from %p", __FUNCTION__, anw.get());
349    err = buf->unlock();
350    if (err != NO_ERROR) {
351        ALOGE("%s: Failed to unlock buffer, error %s (%d).", __FUNCTION__, strerror(-err), err);
352        return err;
353    }
354
355    ALOGV("%s: Queue buffer to %p", __FUNCTION__, anw.get());
356    err = anw->queueBuffer(anw.get(), buf->getNativeBuffer(), /*fenceFd*/-1);
357    if (err != NO_ERROR) {
358        ALOGE("%s: Failed to queue buffer, error %s (%d).", __FUNCTION__, strerror(-err), err);
359        return err;
360    }
361    return NO_ERROR;
362}
363
364static sp<ANativeWindow> getNativeWindow(JNIEnv* env, jobject surface) {
365    sp<ANativeWindow> anw;
366    if (surface) {
367        anw = android_view_Surface_getNativeWindow(env, surface);
368        if (env->ExceptionCheck()) {
369            return NULL;
370        }
371    } else {
372        jniThrowNullPointerException(env, "surface");
373        return NULL;
374    }
375    if (anw == NULL) {
376        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
377                "Surface had no valid native window.");
378        return NULL;
379    }
380    return anw;
381}
382
383static sp<ANativeWindow> getNativeWindowFromTexture(JNIEnv* env, jobject surfaceTexture) {
384    sp<ANativeWindow> anw;
385    if (surfaceTexture) {
386        anw = android_SurfaceTexture_getNativeWindow(env, surfaceTexture);
387        if (env->ExceptionCheck()) {
388            return NULL;
389        }
390    } else {
391        jniThrowNullPointerException(env, "surfaceTexture");
392        return NULL;
393    }
394    if (anw == NULL) {
395        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
396                "SurfaceTexture had no valid native window.");
397        return NULL;
398    }
399    return anw;
400}
401
402static sp<Surface> getSurface(JNIEnv* env, jobject surface) {
403    sp<Surface> s;
404    if (surface) {
405        s = android_view_Surface_getSurface(env, surface);
406        if (env->ExceptionCheck()) {
407            return NULL;
408        }
409    } else {
410        jniThrowNullPointerException(env, "surface");
411        return NULL;
412    }
413    if (s == NULL) {
414        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
415                "Surface had no valid native Surface.");
416        return NULL;
417    }
418    return s;
419}
420
421extern "C" {
422
423static jint LegacyCameraDevice_nativeDetectSurfaceType(JNIEnv* env, jobject thiz, jobject surface) {
424    ALOGV("nativeDetectSurfaceType");
425    sp<ANativeWindow> anw;
426    if ((anw = getNativeWindow(env, surface)) == NULL) {
427        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
428        return BAD_VALUE;
429    }
430    int32_t fmt = 0;
431    status_t err = anw->query(anw.get(), NATIVE_WINDOW_FORMAT, &fmt);
432    if(err != NO_ERROR) {
433        ALOGE("%s: Error while querying surface pixel format %s (%d).", __FUNCTION__, strerror(-err),
434                err);
435        return err;
436    }
437    return fmt;
438}
439
440static jint LegacyCameraDevice_nativeDetectSurfaceDimens(JNIEnv* env, jobject thiz,
441          jobject surface, jintArray dimens) {
442    ALOGV("nativeGetSurfaceDimens");
443
444    if (dimens == NULL) {
445        ALOGE("%s: Null dimens argument passed to nativeDetectSurfaceDimens", __FUNCTION__);
446        return BAD_VALUE;
447    }
448
449    if (env->GetArrayLength(dimens) < 2) {
450        ALOGE("%s: Invalid length of dimens argument in nativeDetectSurfaceDimens", __FUNCTION__);
451        return BAD_VALUE;
452    }
453
454    sp<ANativeWindow> anw;
455    if ((anw = getNativeWindow(env, surface)) == NULL) {
456        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
457        return BAD_VALUE;
458    }
459    int32_t dimenBuf[2];
460    status_t err = anw->query(anw.get(), NATIVE_WINDOW_WIDTH, dimenBuf);
461    if(err != NO_ERROR) {
462        ALOGE("%s: Error while querying surface width %s (%d).", __FUNCTION__, strerror(-err),
463                err);
464        return err;
465    }
466    err = anw->query(anw.get(), NATIVE_WINDOW_HEIGHT, dimenBuf + 1);
467    if(err != NO_ERROR) {
468        ALOGE("%s: Error while querying surface height %s (%d).", __FUNCTION__, strerror(-err),
469                err);
470        return err;
471    }
472    env->SetIntArrayRegion(dimens, /*start*/0, /*length*/ARRAY_SIZE(dimenBuf), dimenBuf);
473    return NO_ERROR;
474}
475
476static jint LegacyCameraDevice_nativeDetectSurfaceUsageFlags(JNIEnv* env, jobject thiz,
477          jobject surface) {
478    ALOGV("nativeDetectSurfaceUsageFlags");
479
480    sp<ANativeWindow> anw;
481    if ((anw = getNativeWindow(env, surface)) == NULL) {
482        jniThrowException(env, "Ljava/lang/UnsupportedOperationException;",
483            "Could not retrieve native window from surface.");
484        return BAD_VALUE;
485    }
486    int32_t usage = 0;
487    status_t err = anw->query(anw.get(), NATIVE_WINDOW_CONSUMER_USAGE_BITS, &usage);
488    if(err != NO_ERROR) {
489        jniThrowException(env, "Ljava/lang/UnsupportedOperationException;",
490            "Error while querying surface usage bits");
491        return err;
492    }
493    return usage;
494}
495
496static jint LegacyCameraDevice_nativeDetectTextureDimens(JNIEnv* env, jobject thiz,
497        jobject surfaceTexture, jintArray dimens) {
498    ALOGV("nativeDetectTextureDimens");
499    sp<ANativeWindow> anw;
500    if ((anw = getNativeWindowFromTexture(env, surfaceTexture)) == NULL) {
501        ALOGE("%s: Could not retrieve native window from SurfaceTexture.", __FUNCTION__);
502        return BAD_VALUE;
503    }
504
505    int32_t dimenBuf[2];
506    status_t err = anw->query(anw.get(), NATIVE_WINDOW_WIDTH, dimenBuf);
507    if(err != NO_ERROR) {
508        ALOGE("%s: Error while querying SurfaceTexture width %s (%d)", __FUNCTION__,
509                strerror(-err), err);
510        return err;
511    }
512
513    err = anw->query(anw.get(), NATIVE_WINDOW_HEIGHT, dimenBuf + 1);
514    if(err != NO_ERROR) {
515        ALOGE("%s: Error while querying SurfaceTexture height %s (%d)", __FUNCTION__,
516                strerror(-err), err);
517        return err;
518    }
519
520    env->SetIntArrayRegion(dimens, /*start*/0, /*length*/ARRAY_SIZE(dimenBuf), dimenBuf);
521    if (env->ExceptionCheck()) {
522        return BAD_VALUE;
523    }
524    return NO_ERROR;
525}
526
527static jint LegacyCameraDevice_nativeConfigureSurface(JNIEnv* env, jobject thiz, jobject surface,
528        jint width, jint height, jint pixelFormat) {
529    ALOGV("nativeConfigureSurface");
530    sp<ANativeWindow> anw;
531    if ((anw = getNativeWindow(env, surface)) == NULL) {
532        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
533        return BAD_VALUE;
534    }
535    status_t err = configureSurface(anw, width, height, pixelFormat, CAMERA_DEVICE_BUFFER_SLACK);
536    if (err != NO_ERROR) {
537        ALOGE("%s: Error while configuring surface %s (%d).", __FUNCTION__, strerror(-err), err);
538        return err;
539    }
540    return NO_ERROR;
541}
542
543static jint LegacyCameraDevice_nativeProduceFrame(JNIEnv* env, jobject thiz, jobject surface,
544        jbyteArray pixelBuffer, jint width, jint height, jint pixelFormat) {
545    ALOGV("nativeProduceFrame");
546    sp<ANativeWindow> anw;
547
548    if ((anw = getNativeWindow(env, surface)) == NULL) {
549        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
550        return BAD_VALUE;
551    }
552
553    if (pixelBuffer == NULL) {
554        jniThrowNullPointerException(env, "pixelBuffer");
555        return DONT_CARE;
556    }
557
558    int32_t bufSize = static_cast<int32_t>(env->GetArrayLength(pixelBuffer));
559    jbyte* pixels = env->GetByteArrayElements(pixelBuffer, /*is_copy*/NULL);
560
561    if (pixels == NULL) {
562        jniThrowNullPointerException(env, "pixels");
563        return DONT_CARE;
564    }
565
566    status_t err = produceFrame(anw, reinterpret_cast<uint8_t*>(pixels), width, height,
567            pixelFormat, bufSize);
568    env->ReleaseByteArrayElements(pixelBuffer, pixels, JNI_ABORT);
569
570    if (err != NO_ERROR) {
571        ALOGE("%s: Error while producing frame %s (%d).", __FUNCTION__, strerror(-err), err);
572        return err;
573    }
574    return NO_ERROR;
575}
576
577static jint LegacyCameraDevice_nativeSetSurfaceFormat(JNIEnv* env, jobject thiz, jobject surface,
578        jint pixelFormat) {
579    ALOGV("nativeSetSurfaceType");
580    sp<ANativeWindow> anw;
581    if ((anw = getNativeWindow(env, surface)) == NULL) {
582        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
583        return BAD_VALUE;
584    }
585    status_t err = native_window_set_buffers_format(anw.get(), pixelFormat);
586    if (err != NO_ERROR) {
587        ALOGE("%s: Error while setting surface format %s (%d).", __FUNCTION__, strerror(-err), err);
588        return err;
589    }
590    return NO_ERROR;
591}
592
593static jint LegacyCameraDevice_nativeSetSurfaceDimens(JNIEnv* env, jobject thiz, jobject surface,
594        jint width, jint height) {
595    ALOGV("nativeSetSurfaceDimens");
596    sp<ANativeWindow> anw;
597    if ((anw = getNativeWindow(env, surface)) == NULL) {
598        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
599        return BAD_VALUE;
600    }
601
602    // Set user dimensions only
603    // The producer dimensions are owned by GL
604    status_t err = native_window_set_buffers_user_dimensions(anw.get(), width, height);
605    if (err != NO_ERROR) {
606        ALOGE("%s: Error while setting surface user dimens %s (%d).", __FUNCTION__, strerror(-err),
607                err);
608        return err;
609    }
610    return NO_ERROR;
611}
612
613static jlong LegacyCameraDevice_nativeGetSurfaceId(JNIEnv* env, jobject thiz, jobject surface) {
614    ALOGV("nativeGetSurfaceId");
615    sp<Surface> s;
616    if ((s = getSurface(env, surface)) == NULL) {
617        ALOGE("%s: Could not retrieve native Surface from surface.", __FUNCTION__);
618        return 0;
619    }
620    sp<IGraphicBufferProducer> gbp = s->getIGraphicBufferProducer();
621    if (gbp == NULL) {
622        ALOGE("%s: Could not retrieve IGraphicBufferProducer from surface.", __FUNCTION__);
623        return 0;
624    }
625    sp<IBinder> b = gbp->asBinder();
626    if (b == NULL) {
627        ALOGE("%s: Could not retrieve IBinder from surface.", __FUNCTION__);
628        return 0;
629    }
630    /*
631     * FIXME: Use better unique ID for surfaces than native IBinder pointer.  Fix also in the camera
632     * service (CameraDeviceClient.h).
633     */
634    return reinterpret_cast<jlong>(b.get());
635}
636
637static jint LegacyCameraDevice_nativeSetSurfaceOrientation(JNIEnv* env, jobject thiz,
638        jobject surface, jint facing, jint orientation) {
639    ALOGV("nativeSetSurfaceOrientation");
640    sp<ANativeWindow> anw;
641    if ((anw = getNativeWindow(env, surface)) == NULL) {
642        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
643        return BAD_VALUE;
644    }
645
646    status_t err = NO_ERROR;
647    CameraMetadata staticMetadata;
648
649    int32_t orientVal = static_cast<int32_t>(orientation);
650    uint8_t facingVal = static_cast<uint8_t>(facing);
651    staticMetadata.update(ANDROID_SENSOR_ORIENTATION, &orientVal, 1);
652    staticMetadata.update(ANDROID_LENS_FACING, &facingVal, 1);
653
654    int32_t transform = 0;
655
656    if ((err = CameraUtils::getRotationTransform(staticMetadata, /*out*/&transform)) != NO_ERROR) {
657        ALOGE("%s: Invalid rotation transform %s (%d)", __FUNCTION__, strerror(-err),
658                err);
659        return err;
660    }
661
662    ALOGV("%s: Setting buffer sticky transform to %d", __FUNCTION__, transform);
663
664    if ((err = native_window_set_buffers_sticky_transform(anw.get(), transform)) != NO_ERROR) {
665        ALOGE("%s: Unable to configure surface transform, error %s (%d)", __FUNCTION__,
666                strerror(-err), err);
667        return err;
668    }
669
670    return NO_ERROR;
671}
672
673static jint LegacyCameraDevice_nativeSetNextTimestamp(JNIEnv* env, jobject thiz, jobject surface,
674        jlong timestamp) {
675    ALOGV("nativeSetNextTimestamp");
676    sp<ANativeWindow> anw;
677    if ((anw = getNativeWindow(env, surface)) == NULL) {
678        ALOGE("%s: Could not retrieve native window from surface.", __FUNCTION__);
679        return BAD_VALUE;
680    }
681
682    status_t err = NO_ERROR;
683
684    if ((err = native_window_set_buffers_timestamp(anw.get(), static_cast<int64_t>(timestamp))) !=
685            NO_ERROR) {
686        ALOGE("%s: Unable to set surface timestamp, error %s (%d)", __FUNCTION__, strerror(-err),
687                err);
688        return err;
689    }
690    return NO_ERROR;
691}
692
693static jint LegacyCameraDevice_nativeGetJpegFooterSize(JNIEnv* env, jobject thiz) {
694    ALOGV("nativeGetJpegFooterSize");
695    return static_cast<jint>(sizeof(struct camera3_jpeg_blob));
696}
697
698} // extern "C"
699
700static JNINativeMethod gCameraDeviceMethods[] = {
701    { "nativeDetectSurfaceType",
702    "(Landroid/view/Surface;)I",
703    (void *)LegacyCameraDevice_nativeDetectSurfaceType },
704    { "nativeDetectSurfaceDimens",
705    "(Landroid/view/Surface;[I)I",
706    (void *)LegacyCameraDevice_nativeDetectSurfaceDimens },
707    { "nativeConfigureSurface",
708    "(Landroid/view/Surface;III)I",
709    (void *)LegacyCameraDevice_nativeConfigureSurface },
710    { "nativeProduceFrame",
711    "(Landroid/view/Surface;[BIII)I",
712    (void *)LegacyCameraDevice_nativeProduceFrame },
713    { "nativeSetSurfaceFormat",
714    "(Landroid/view/Surface;I)I",
715    (void *)LegacyCameraDevice_nativeSetSurfaceFormat },
716    { "nativeSetSurfaceDimens",
717    "(Landroid/view/Surface;II)I",
718    (void *)LegacyCameraDevice_nativeSetSurfaceDimens },
719    { "nativeGetSurfaceId",
720    "(Landroid/view/Surface;)J",
721    (void *)LegacyCameraDevice_nativeGetSurfaceId },
722    { "nativeDetectTextureDimens",
723    "(Landroid/graphics/SurfaceTexture;[I)I",
724    (void *)LegacyCameraDevice_nativeDetectTextureDimens },
725    { "nativeSetSurfaceOrientation",
726    "(Landroid/view/Surface;II)I",
727    (void *)LegacyCameraDevice_nativeSetSurfaceOrientation },
728    { "nativeSetNextTimestamp",
729    "(Landroid/view/Surface;J)I",
730    (void *)LegacyCameraDevice_nativeSetNextTimestamp },
731    { "nativeGetJpegFooterSize",
732    "()I",
733    (void *)LegacyCameraDevice_nativeGetJpegFooterSize },
734    { "nativeDetectSurfaceUsageFlags",
735    "(Landroid/view/Surface;)I",
736    (void *)LegacyCameraDevice_nativeDetectSurfaceUsageFlags },
737};
738
739// Get all the required offsets in java class and register native functions
740int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv* env)
741{
742    // Register native functions
743    return AndroidRuntime::registerNativeMethods(env,
744            CAMERA_DEVICE_CLASS_NAME,
745            gCameraDeviceMethods,
746            NELEM(gCameraDeviceMethods));
747}
748