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1017 lines
36 KiB
1017 lines
36 KiB
/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <getopt.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <termios.h>
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#include <unistd.h>
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#define LOG_TAG "ScreenRecord"
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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//#define LOG_NDEBUG 0
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#include <utils/Log.h>
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#include <binder/IPCThreadState.h>
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#include <utils/Errors.h>
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#include <utils/Timers.h>
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#include <utils/Trace.h>
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#include <gui/Surface.h>
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#include <gui/SurfaceComposerClient.h>
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#include <gui/ISurfaceComposer.h>
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#include <ui/DisplayInfo.h>
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#include <media/openmax/OMX_IVCommon.h>
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#include <media/stagefright/foundation/ABuffer.h>
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#include <media/stagefright/foundation/AMessage.h>
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#include <media/stagefright/MediaCodec.h>
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#include <media/stagefright/MediaErrors.h>
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#include <media/stagefright/MediaMuxer.h>
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#include <media/ICrypto.h>
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#include <media/MediaCodecBuffer.h>
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#include "screenrecord.h"
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#include "Overlay.h"
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#include "FrameOutput.h"
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using namespace android;
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static const uint32_t kMinBitRate = 100000; // 0.1Mbps
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static const uint32_t kMaxBitRate = 200 * 1000000; // 200Mbps
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static const uint32_t kMaxTimeLimitSec = 180; // 3 minutes
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static const uint32_t kFallbackWidth = 1280; // 720p
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static const uint32_t kFallbackHeight = 720;
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static const char* kMimeTypeAvc = "video/avc";
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// Command-line parameters.
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static bool gVerbose = false; // chatty on stdout
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static bool gRotate = false; // rotate 90 degrees
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static bool gMonotonicTime = false; // use system monotonic time for timestamps
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static enum {
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FORMAT_MP4, FORMAT_H264, FORMAT_FRAMES, FORMAT_RAW_FRAMES
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} gOutputFormat = FORMAT_MP4; // data format for output
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static bool gSizeSpecified = false; // was size explicitly requested?
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static bool gWantInfoScreen = false; // do we want initial info screen?
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static bool gWantFrameTime = false; // do we want times on each frame?
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static uint32_t gVideoWidth = 0; // default width+height
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static uint32_t gVideoHeight = 0;
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static uint32_t gBitRate = 4000000; // 4Mbps
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static uint32_t gTimeLimitSec = kMaxTimeLimitSec;
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// Set by signal handler to stop recording.
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static volatile bool gStopRequested = false;
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// Previous signal handler state, restored after first hit.
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static struct sigaction gOrigSigactionINT;
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static struct sigaction gOrigSigactionHUP;
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/*
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* Catch keyboard interrupt signals. On receipt, the "stop requested"
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* flag is raised, and the original handler is restored (so that, if
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* we get stuck finishing, a second Ctrl-C will kill the process).
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*/
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static void signalCatcher(int signum)
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{
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gStopRequested = true;
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switch (signum) {
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case SIGINT:
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case SIGHUP:
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sigaction(SIGINT, &gOrigSigactionINT, NULL);
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sigaction(SIGHUP, &gOrigSigactionHUP, NULL);
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break;
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default:
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abort();
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break;
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}
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}
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/*
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* Configures signal handlers. The previous handlers are saved.
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*
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* If the command is run from an interactive adb shell, we get SIGINT
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* when Ctrl-C is hit. If we're run from the host, the local adb process
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* gets the signal, and we get a SIGHUP when the terminal disconnects.
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*/
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static status_t configureSignals() {
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struct sigaction act;
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memset(&act, 0, sizeof(act));
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act.sa_handler = signalCatcher;
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if (sigaction(SIGINT, &act, &gOrigSigactionINT) != 0) {
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status_t err = -errno;
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fprintf(stderr, "Unable to configure SIGINT handler: %s\n",
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strerror(errno));
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return err;
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}
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if (sigaction(SIGHUP, &act, &gOrigSigactionHUP) != 0) {
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status_t err = -errno;
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fprintf(stderr, "Unable to configure SIGHUP handler: %s\n",
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strerror(errno));
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return err;
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}
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return NO_ERROR;
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}
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/*
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* Returns "true" if the device is rotated 90 degrees.
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*/
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static bool isDeviceRotated(int orientation) {
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return orientation != DISPLAY_ORIENTATION_0 &&
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orientation != DISPLAY_ORIENTATION_180;
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}
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/*
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* Configures and starts the MediaCodec encoder. Obtains an input surface
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* from the codec.
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*/
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static status_t prepareEncoder(float displayFps, sp<MediaCodec>* pCodec,
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sp<IGraphicBufferProducer>* pBufferProducer) {
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status_t err;
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if (gVerbose) {
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printf("Configuring recorder for %dx%d %s at %.2fMbps\n",
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gVideoWidth, gVideoHeight, kMimeTypeAvc, gBitRate / 1000000.0);
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}
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sp<AMessage> format = new AMessage;
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format->setInt32("width", gVideoWidth);
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format->setInt32("height", gVideoHeight);
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format->setString("mime", kMimeTypeAvc);
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format->setInt32("color-format", OMX_COLOR_FormatAndroidOpaque);
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format->setInt32("bitrate", gBitRate);
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format->setFloat("frame-rate", displayFps);
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format->setInt32("i-frame-interval", 10);
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sp<ALooper> looper = new ALooper;
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looper->setName("screenrecord_looper");
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looper->start();
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ALOGV("Creating codec");
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sp<MediaCodec> codec = MediaCodec::CreateByType(looper, kMimeTypeAvc, true);
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if (codec == NULL) {
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fprintf(stderr, "ERROR: unable to create %s codec instance\n",
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kMimeTypeAvc);
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return UNKNOWN_ERROR;
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}
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err = codec->configure(format, NULL, NULL,
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MediaCodec::CONFIGURE_FLAG_ENCODE);
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if (err != NO_ERROR) {
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fprintf(stderr, "ERROR: unable to configure %s codec at %dx%d (err=%d)\n",
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kMimeTypeAvc, gVideoWidth, gVideoHeight, err);
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codec->release();
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return err;
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}
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ALOGV("Creating encoder input surface");
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sp<IGraphicBufferProducer> bufferProducer;
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err = codec->createInputSurface(&bufferProducer);
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if (err != NO_ERROR) {
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fprintf(stderr,
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"ERROR: unable to create encoder input surface (err=%d)\n", err);
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codec->release();
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return err;
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}
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ALOGV("Starting codec");
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err = codec->start();
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if (err != NO_ERROR) {
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fprintf(stderr, "ERROR: unable to start codec (err=%d)\n", err);
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codec->release();
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return err;
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}
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ALOGV("Codec prepared");
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*pCodec = codec;
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*pBufferProducer = bufferProducer;
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return 0;
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}
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/*
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* Sets the display projection, based on the display dimensions, video size,
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* and device orientation.
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*/
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static status_t setDisplayProjection(const sp<IBinder>& dpy,
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const DisplayInfo& mainDpyInfo) {
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// Set the region of the layer stack we're interested in, which in our
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// case is "all of it". If the app is rotated (so that the width of the
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// app is based on the height of the display), reverse width/height.
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bool deviceRotated = isDeviceRotated(mainDpyInfo.orientation);
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uint32_t sourceWidth, sourceHeight;
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if (!deviceRotated) {
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sourceWidth = mainDpyInfo.w;
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sourceHeight = mainDpyInfo.h;
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} else {
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ALOGV("using rotated width/height");
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sourceHeight = mainDpyInfo.w;
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sourceWidth = mainDpyInfo.h;
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}
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Rect layerStackRect(sourceWidth, sourceHeight);
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// We need to preserve the aspect ratio of the display.
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float displayAspect = (float) sourceHeight / (float) sourceWidth;
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// Set the way we map the output onto the display surface (which will
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// be e.g. 1280x720 for a 720p video). The rect is interpreted
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// post-rotation, so if the display is rotated 90 degrees we need to
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// "pre-rotate" it by flipping width/height, so that the orientation
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// adjustment changes it back.
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//
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// We might want to encode a portrait display as landscape to use more
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// of the screen real estate. (If players respect a 90-degree rotation
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// hint, we can essentially get a 720x1280 video instead of 1280x720.)
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// In that case, we swap the configured video width/height and then
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// supply a rotation value to the display projection.
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uint32_t videoWidth, videoHeight;
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uint32_t outWidth, outHeight;
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if (!gRotate) {
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videoWidth = gVideoWidth;
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videoHeight = gVideoHeight;
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} else {
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videoWidth = gVideoHeight;
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videoHeight = gVideoWidth;
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}
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if (videoHeight > (uint32_t)(videoWidth * displayAspect)) {
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// limited by narrow width; reduce height
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outWidth = videoWidth;
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outHeight = (uint32_t)(videoWidth * displayAspect);
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} else {
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// limited by short height; restrict width
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outHeight = videoHeight;
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outWidth = (uint32_t)(videoHeight / displayAspect);
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}
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uint32_t offX, offY;
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offX = (videoWidth - outWidth) / 2;
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offY = (videoHeight - outHeight) / 2;
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Rect displayRect(offX, offY, offX + outWidth, offY + outHeight);
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if (gVerbose) {
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if (gRotate) {
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printf("Rotated content area is %ux%u at offset x=%d y=%d\n",
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outHeight, outWidth, offY, offX);
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} else {
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printf("Content area is %ux%u at offset x=%d y=%d\n",
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outWidth, outHeight, offX, offY);
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}
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}
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SurfaceComposerClient::setDisplayProjection(dpy,
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gRotate ? DISPLAY_ORIENTATION_90 : DISPLAY_ORIENTATION_0,
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layerStackRect, displayRect);
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return NO_ERROR;
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}
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/*
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* Configures the virtual display. When this completes, virtual display
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* frames will start arriving from the buffer producer.
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*/
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static status_t prepareVirtualDisplay(const DisplayInfo& mainDpyInfo,
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const sp<IGraphicBufferProducer>& bufferProducer,
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sp<IBinder>* pDisplayHandle) {
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sp<IBinder> dpy = SurfaceComposerClient::createDisplay(
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String8("ScreenRecorder"), false /*secure*/);
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SurfaceComposerClient::openGlobalTransaction();
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SurfaceComposerClient::setDisplaySurface(dpy, bufferProducer);
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setDisplayProjection(dpy, mainDpyInfo);
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SurfaceComposerClient::setDisplayLayerStack(dpy, 0); // default stack
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SurfaceComposerClient::closeGlobalTransaction();
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*pDisplayHandle = dpy;
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return NO_ERROR;
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}
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/*
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* Runs the MediaCodec encoder, sending the output to the MediaMuxer. The
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* input frames are coming from the virtual display as fast as SurfaceFlinger
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* wants to send them.
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*
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* Exactly one of muxer or rawFp must be non-null.
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*
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* The muxer must *not* have been started before calling.
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*/
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static status_t runEncoder(const sp<MediaCodec>& encoder,
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const sp<MediaMuxer>& muxer, FILE* rawFp, const sp<IBinder>& mainDpy,
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const sp<IBinder>& virtualDpy, uint8_t orientation) {
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static int kTimeout = 250000; // be responsive on signal
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status_t err;
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ssize_t trackIdx = -1;
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uint32_t debugNumFrames = 0;
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int64_t startWhenNsec = systemTime(CLOCK_MONOTONIC);
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int64_t endWhenNsec = startWhenNsec + seconds_to_nanoseconds(gTimeLimitSec);
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DisplayInfo mainDpyInfo;
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assert((rawFp == NULL && muxer != NULL) || (rawFp != NULL && muxer == NULL));
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Vector<sp<MediaCodecBuffer> > buffers;
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err = encoder->getOutputBuffers(&buffers);
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if (err != NO_ERROR) {
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fprintf(stderr, "Unable to get output buffers (err=%d)\n", err);
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return err;
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}
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// Run until we're signaled.
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while (!gStopRequested) {
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size_t bufIndex, offset, size;
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int64_t ptsUsec;
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uint32_t flags;
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if (systemTime(CLOCK_MONOTONIC) > endWhenNsec) {
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if (gVerbose) {
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printf("Time limit reached\n");
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}
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break;
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}
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ALOGV("Calling dequeueOutputBuffer");
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err = encoder->dequeueOutputBuffer(&bufIndex, &offset, &size, &ptsUsec,
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&flags, kTimeout);
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ALOGV("dequeueOutputBuffer returned %d", err);
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switch (err) {
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case NO_ERROR:
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// got a buffer
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if ((flags & MediaCodec::BUFFER_FLAG_CODECCONFIG) != 0) {
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ALOGV("Got codec config buffer (%zu bytes)", size);
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if (muxer != NULL) {
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// ignore this -- we passed the CSD into MediaMuxer when
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// we got the format change notification
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size = 0;
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}
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}
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if (size != 0) {
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ALOGV("Got data in buffer %zu, size=%zu, pts=%" PRId64,
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bufIndex, size, ptsUsec);
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{ // scope
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ATRACE_NAME("orientation");
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// Check orientation, update if it has changed.
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//
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// Polling for changes is inefficient and wrong, but the
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// useful stuff is hard to get at without a Dalvik VM.
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err = SurfaceComposerClient::getDisplayInfo(mainDpy,
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&mainDpyInfo);
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if (err != NO_ERROR) {
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ALOGW("getDisplayInfo(main) failed: %d", err);
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} else if (orientation != mainDpyInfo.orientation) {
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ALOGD("orientation changed, now %d", mainDpyInfo.orientation);
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SurfaceComposerClient::openGlobalTransaction();
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setDisplayProjection(virtualDpy, mainDpyInfo);
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SurfaceComposerClient::closeGlobalTransaction();
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orientation = mainDpyInfo.orientation;
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}
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}
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// If the virtual display isn't providing us with timestamps,
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// use the current time. This isn't great -- we could get
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// decoded data in clusters -- but we're not expecting
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// to hit this anyway.
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if (ptsUsec == 0) {
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ptsUsec = systemTime(SYSTEM_TIME_MONOTONIC) / 1000;
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}
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if (muxer == NULL) {
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fwrite(buffers[bufIndex]->data(), 1, size, rawFp);
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// Flush the data immediately in case we're streaming.
|
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// We don't want to do this if all we've written is
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// the SPS/PPS data because mplayer gets confused.
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if ((flags & MediaCodec::BUFFER_FLAG_CODECCONFIG) == 0) {
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fflush(rawFp);
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}
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} else {
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// The MediaMuxer docs are unclear, but it appears that we
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// need to pass either the full set of BufferInfo flags, or
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// (flags & BUFFER_FLAG_SYNCFRAME).
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//
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// If this blocks for too long we could drop frames. We may
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// want to queue these up and do them on a different thread.
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ATRACE_NAME("write sample");
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assert(trackIdx != -1);
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// TODO
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sp<ABuffer> buffer = new ABuffer(
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buffers[bufIndex]->data(), buffers[bufIndex]->size());
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err = muxer->writeSampleData(buffer, trackIdx,
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ptsUsec, flags);
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if (err != NO_ERROR) {
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fprintf(stderr,
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"Failed writing data to muxer (err=%d)\n", err);
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return err;
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}
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}
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debugNumFrames++;
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}
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err = encoder->releaseOutputBuffer(bufIndex);
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if (err != NO_ERROR) {
|
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fprintf(stderr, "Unable to release output buffer (err=%d)\n",
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err);
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return err;
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}
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if ((flags & MediaCodec::BUFFER_FLAG_EOS) != 0) {
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// Not expecting EOS from SurfaceFlinger. Go with it.
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ALOGI("Received end-of-stream");
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gStopRequested = true;
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}
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break;
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case -EAGAIN: // INFO_TRY_AGAIN_LATER
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ALOGV("Got -EAGAIN, looping");
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break;
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case INFO_FORMAT_CHANGED: // INFO_OUTPUT_FORMAT_CHANGED
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{
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// Format includes CSD, which we must provide to muxer.
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ALOGV("Encoder format changed");
|
|
sp<AMessage> newFormat;
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encoder->getOutputFormat(&newFormat);
|
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if (muxer != NULL) {
|
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trackIdx = muxer->addTrack(newFormat);
|
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ALOGV("Starting muxer");
|
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err = muxer->start();
|
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if (err != NO_ERROR) {
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fprintf(stderr, "Unable to start muxer (err=%d)\n", err);
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return err;
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}
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}
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}
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break;
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case INFO_OUTPUT_BUFFERS_CHANGED: // INFO_OUTPUT_BUFFERS_CHANGED
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// Not expected for an encoder; handle it anyway.
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ALOGV("Encoder buffers changed");
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err = encoder->getOutputBuffers(&buffers);
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if (err != NO_ERROR) {
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fprintf(stderr,
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"Unable to get new output buffers (err=%d)\n", err);
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return err;
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}
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break;
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case INVALID_OPERATION:
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ALOGW("dequeueOutputBuffer returned INVALID_OPERATION");
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return err;
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|
default:
|
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fprintf(stderr,
|
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"Got weird result %d from dequeueOutputBuffer\n", err);
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return err;
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}
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}
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|
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ALOGV("Encoder stopping (req=%d)", gStopRequested);
|
|
if (gVerbose) {
|
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printf("Encoder stopping; recorded %u frames in %" PRId64 " seconds\n",
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debugNumFrames, nanoseconds_to_seconds(
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systemTime(CLOCK_MONOTONIC) - startWhenNsec));
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|
}
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return NO_ERROR;
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}
|
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|
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/*
|
|
* Raw H.264 byte stream output requested. Send the output to stdout
|
|
* if desired. If the output is a tty, reconfigure it to avoid the
|
|
* CRLF line termination that we see with "adb shell" commands.
|
|
*/
|
|
static FILE* prepareRawOutput(const char* fileName) {
|
|
FILE* rawFp = NULL;
|
|
|
|
if (strcmp(fileName, "-") == 0) {
|
|
if (gVerbose) {
|
|
fprintf(stderr, "ERROR: verbose output and '-' not compatible");
|
|
return NULL;
|
|
}
|
|
rawFp = stdout;
|
|
} else {
|
|
rawFp = fopen(fileName, "w");
|
|
if (rawFp == NULL) {
|
|
fprintf(stderr, "fopen raw failed: %s\n", strerror(errno));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
int fd = fileno(rawFp);
|
|
if (isatty(fd)) {
|
|
// best effort -- reconfigure tty for "raw"
|
|
ALOGD("raw video output to tty (fd=%d)", fd);
|
|
struct termios term;
|
|
if (tcgetattr(fd, &term) == 0) {
|
|
cfmakeraw(&term);
|
|
if (tcsetattr(fd, TCSANOW, &term) == 0) {
|
|
ALOGD("tty successfully configured for raw");
|
|
}
|
|
}
|
|
}
|
|
|
|
return rawFp;
|
|
}
|
|
|
|
/*
|
|
* Main "do work" start point.
|
|
*
|
|
* Configures codec, muxer, and virtual display, then starts moving bits
|
|
* around.
|
|
*/
|
|
static status_t recordScreen(const char* fileName) {
|
|
status_t err;
|
|
|
|
// Configure signal handler.
|
|
err = configureSignals();
|
|
if (err != NO_ERROR) return err;
|
|
|
|
// Start Binder thread pool. MediaCodec needs to be able to receive
|
|
// messages from mediaserver.
|
|
sp<ProcessState> self = ProcessState::self();
|
|
self->startThreadPool();
|
|
|
|
// Get main display parameters.
|
|
sp<IBinder> mainDpy = SurfaceComposerClient::getBuiltInDisplay(
|
|
ISurfaceComposer::eDisplayIdMain);
|
|
DisplayInfo mainDpyInfo;
|
|
err = SurfaceComposerClient::getDisplayInfo(mainDpy, &mainDpyInfo);
|
|
if (err != NO_ERROR) {
|
|
fprintf(stderr, "ERROR: unable to get display characteristics\n");
|
|
return err;
|
|
}
|
|
if (gVerbose) {
|
|
printf("Main display is %dx%d @%.2ffps (orientation=%u)\n",
|
|
mainDpyInfo.w, mainDpyInfo.h, mainDpyInfo.fps,
|
|
mainDpyInfo.orientation);
|
|
}
|
|
|
|
bool rotated = isDeviceRotated(mainDpyInfo.orientation);
|
|
if (gVideoWidth == 0) {
|
|
gVideoWidth = rotated ? mainDpyInfo.h : mainDpyInfo.w;
|
|
}
|
|
if (gVideoHeight == 0) {
|
|
gVideoHeight = rotated ? mainDpyInfo.w : mainDpyInfo.h;
|
|
}
|
|
|
|
// Configure and start the encoder.
|
|
sp<MediaCodec> encoder;
|
|
sp<FrameOutput> frameOutput;
|
|
sp<IGraphicBufferProducer> encoderInputSurface;
|
|
if (gOutputFormat != FORMAT_FRAMES && gOutputFormat != FORMAT_RAW_FRAMES) {
|
|
err = prepareEncoder(mainDpyInfo.fps, &encoder, &encoderInputSurface);
|
|
|
|
if (err != NO_ERROR && !gSizeSpecified) {
|
|
// fallback is defined for landscape; swap if we're in portrait
|
|
bool needSwap = gVideoWidth < gVideoHeight;
|
|
uint32_t newWidth = needSwap ? kFallbackHeight : kFallbackWidth;
|
|
uint32_t newHeight = needSwap ? kFallbackWidth : kFallbackHeight;
|
|
if (gVideoWidth != newWidth && gVideoHeight != newHeight) {
|
|
ALOGV("Retrying with 720p");
|
|
fprintf(stderr, "WARNING: failed at %dx%d, retrying at %dx%d\n",
|
|
gVideoWidth, gVideoHeight, newWidth, newHeight);
|
|
gVideoWidth = newWidth;
|
|
gVideoHeight = newHeight;
|
|
err = prepareEncoder(mainDpyInfo.fps, &encoder,
|
|
&encoderInputSurface);
|
|
}
|
|
}
|
|
if (err != NO_ERROR) return err;
|
|
|
|
// From here on, we must explicitly release() the encoder before it goes
|
|
// out of scope, or we will get an assertion failure from stagefright
|
|
// later on in a different thread.
|
|
} else {
|
|
// We're not using an encoder at all. The "encoder input surface" we hand to
|
|
// SurfaceFlinger will just feed directly to us.
|
|
frameOutput = new FrameOutput();
|
|
err = frameOutput->createInputSurface(gVideoWidth, gVideoHeight, &encoderInputSurface);
|
|
if (err != NO_ERROR) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
// Draw the "info" page by rendering a frame with GLES and sending
|
|
// it directly to the encoder.
|
|
// TODO: consider displaying this as a regular layer to avoid b/11697754
|
|
if (gWantInfoScreen) {
|
|
Overlay::drawInfoPage(encoderInputSurface);
|
|
}
|
|
|
|
// Configure optional overlay.
|
|
sp<IGraphicBufferProducer> bufferProducer;
|
|
sp<Overlay> overlay;
|
|
if (gWantFrameTime) {
|
|
// Send virtual display frames to an external texture.
|
|
overlay = new Overlay(gMonotonicTime);
|
|
err = overlay->start(encoderInputSurface, &bufferProducer);
|
|
if (err != NO_ERROR) {
|
|
if (encoder != NULL) encoder->release();
|
|
return err;
|
|
}
|
|
if (gVerbose) {
|
|
printf("Bugreport overlay created\n");
|
|
}
|
|
} else {
|
|
// Use the encoder's input surface as the virtual display surface.
|
|
bufferProducer = encoderInputSurface;
|
|
}
|
|
|
|
// Configure virtual display.
|
|
sp<IBinder> dpy;
|
|
err = prepareVirtualDisplay(mainDpyInfo, bufferProducer, &dpy);
|
|
if (err != NO_ERROR) {
|
|
if (encoder != NULL) encoder->release();
|
|
return err;
|
|
}
|
|
|
|
sp<MediaMuxer> muxer = NULL;
|
|
FILE* rawFp = NULL;
|
|
switch (gOutputFormat) {
|
|
case FORMAT_MP4: {
|
|
// Configure muxer. We have to wait for the CSD blob from the encoder
|
|
// before we can start it.
|
|
err = unlink(fileName);
|
|
if (err != 0 && errno != ENOENT) {
|
|
fprintf(stderr, "ERROR: couldn't remove existing file\n");
|
|
abort();
|
|
}
|
|
int fd = open(fileName, O_CREAT | O_LARGEFILE | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "ERROR: couldn't open file\n");
|
|
abort();
|
|
}
|
|
muxer = new MediaMuxer(fd, MediaMuxer::OUTPUT_FORMAT_MPEG_4);
|
|
close(fd);
|
|
if (gRotate) {
|
|
muxer->setOrientationHint(90); // TODO: does this do anything?
|
|
}
|
|
break;
|
|
}
|
|
case FORMAT_H264:
|
|
case FORMAT_FRAMES:
|
|
case FORMAT_RAW_FRAMES: {
|
|
rawFp = prepareRawOutput(fileName);
|
|
if (rawFp == NULL) {
|
|
if (encoder != NULL) encoder->release();
|
|
return -1;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
fprintf(stderr, "ERROR: unknown format %d\n", gOutputFormat);
|
|
abort();
|
|
}
|
|
|
|
if (gOutputFormat == FORMAT_FRAMES || gOutputFormat == FORMAT_RAW_FRAMES) {
|
|
// TODO: if we want to make this a proper feature, we should output
|
|
// an outer header with version info. Right now we never change
|
|
// the frame size or format, so we could conceivably just send
|
|
// the current frame header once and then follow it with an
|
|
// unbroken stream of data.
|
|
|
|
// Make the EGL context current again. This gets unhooked if we're
|
|
// using "--bugreport" mode.
|
|
// TODO: figure out if we can eliminate this
|
|
frameOutput->prepareToCopy();
|
|
|
|
while (!gStopRequested) {
|
|
// Poll for frames, the same way we do for MediaCodec. We do
|
|
// all of the work on the main thread.
|
|
//
|
|
// Ideally we'd sleep indefinitely and wake when the
|
|
// stop was requested, but this will do for now. (It almost
|
|
// works because wait() wakes when a signal hits, but we
|
|
// need to handle the edge cases.)
|
|
bool rawFrames = gOutputFormat == FORMAT_RAW_FRAMES;
|
|
err = frameOutput->copyFrame(rawFp, 250000, rawFrames);
|
|
if (err == ETIMEDOUT) {
|
|
err = NO_ERROR;
|
|
} else if (err != NO_ERROR) {
|
|
ALOGE("Got error %d from copyFrame()", err);
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
// Main encoder loop.
|
|
err = runEncoder(encoder, muxer, rawFp, mainDpy, dpy,
|
|
mainDpyInfo.orientation);
|
|
if (err != NO_ERROR) {
|
|
fprintf(stderr, "Encoder failed (err=%d)\n", err);
|
|
// fall through to cleanup
|
|
}
|
|
|
|
if (gVerbose) {
|
|
printf("Stopping encoder and muxer\n");
|
|
}
|
|
}
|
|
|
|
// Shut everything down, starting with the producer side.
|
|
encoderInputSurface = NULL;
|
|
SurfaceComposerClient::destroyDisplay(dpy);
|
|
if (overlay != NULL) overlay->stop();
|
|
if (encoder != NULL) encoder->stop();
|
|
if (muxer != NULL) {
|
|
// If we don't stop muxer explicitly, i.e. let the destructor run,
|
|
// it may hang (b/11050628).
|
|
err = muxer->stop();
|
|
} else if (rawFp != stdout) {
|
|
fclose(rawFp);
|
|
}
|
|
if (encoder != NULL) encoder->release();
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Sends a broadcast to the media scanner to tell it about the new video.
|
|
*
|
|
* This is optional, but nice to have.
|
|
*/
|
|
static status_t notifyMediaScanner(const char* fileName) {
|
|
// need to do allocations before the fork()
|
|
String8 fileUrl("file://");
|
|
fileUrl.append(fileName);
|
|
|
|
const char* kCommand = "/system/bin/am";
|
|
const char* const argv[] = {
|
|
kCommand,
|
|
"broadcast",
|
|
"-a",
|
|
"android.intent.action.MEDIA_SCANNER_SCAN_FILE",
|
|
"-d",
|
|
fileUrl.string(),
|
|
NULL
|
|
};
|
|
if (gVerbose) {
|
|
printf("Executing:");
|
|
for (int i = 0; argv[i] != NULL; i++) {
|
|
printf(" %s", argv[i]);
|
|
}
|
|
putchar('\n');
|
|
}
|
|
|
|
pid_t pid = fork();
|
|
if (pid < 0) {
|
|
int err = errno;
|
|
ALOGW("fork() failed: %s", strerror(err));
|
|
return -err;
|
|
} else if (pid > 0) {
|
|
// parent; wait for the child, mostly to make the verbose-mode output
|
|
// look right, but also to check for and log failures
|
|
int status;
|
|
pid_t actualPid = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
|
|
if (actualPid != pid) {
|
|
ALOGW("waitpid(%d) returned %d (errno=%d)", pid, actualPid, errno);
|
|
} else if (status != 0) {
|
|
ALOGW("'am broadcast' exited with status=%d", status);
|
|
} else {
|
|
ALOGV("'am broadcast' exited successfully");
|
|
}
|
|
} else {
|
|
if (!gVerbose) {
|
|
// non-verbose, suppress 'am' output
|
|
ALOGV("closing stdout/stderr in child");
|
|
int fd = open("/dev/null", O_WRONLY);
|
|
if (fd >= 0) {
|
|
dup2(fd, STDOUT_FILENO);
|
|
dup2(fd, STDERR_FILENO);
|
|
close(fd);
|
|
}
|
|
}
|
|
execv(kCommand, const_cast<char* const*>(argv));
|
|
ALOGE("execv(%s) failed: %s\n", kCommand, strerror(errno));
|
|
exit(1);
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Parses a string of the form "1280x720".
|
|
*
|
|
* Returns true on success.
|
|
*/
|
|
static bool parseWidthHeight(const char* widthHeight, uint32_t* pWidth,
|
|
uint32_t* pHeight) {
|
|
long width, height;
|
|
char* end;
|
|
|
|
// Must specify base 10, or "0x0" gets parsed differently.
|
|
width = strtol(widthHeight, &end, 10);
|
|
if (end == widthHeight || *end != 'x' || *(end+1) == '\0') {
|
|
// invalid chars in width, or missing 'x', or missing height
|
|
return false;
|
|
}
|
|
height = strtol(end + 1, &end, 10);
|
|
if (*end != '\0') {
|
|
// invalid chars in height
|
|
return false;
|
|
}
|
|
|
|
*pWidth = width;
|
|
*pHeight = height;
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Accepts a string with a bare number ("4000000") or with a single-character
|
|
* unit ("4m").
|
|
*
|
|
* Returns an error if parsing fails.
|
|
*/
|
|
static status_t parseValueWithUnit(const char* str, uint32_t* pValue) {
|
|
long value;
|
|
char* endptr;
|
|
|
|
value = strtol(str, &endptr, 10);
|
|
if (*endptr == '\0') {
|
|
// bare number
|
|
*pValue = value;
|
|
return NO_ERROR;
|
|
} else if (toupper(*endptr) == 'M' && *(endptr+1) == '\0') {
|
|
*pValue = value * 1000000; // check for overflow?
|
|
return NO_ERROR;
|
|
} else {
|
|
fprintf(stderr, "Unrecognized value: %s\n", str);
|
|
return UNKNOWN_ERROR;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dumps usage on stderr.
|
|
*/
|
|
static void usage() {
|
|
fprintf(stderr,
|
|
"Usage: screenrecord [options] <filename>\n"
|
|
"\n"
|
|
"Android screenrecord v%d.%d. Records the device's display to a .mp4 file.\n"
|
|
"\n"
|
|
"Options:\n"
|
|
"--size WIDTHxHEIGHT\n"
|
|
" Set the video size, e.g. \"1280x720\". Default is the device's main\n"
|
|
" display resolution (if supported), 1280x720 if not. For best results,\n"
|
|
" use a size supported by the AVC encoder.\n"
|
|
"--bit-rate RATE\n"
|
|
" Set the video bit rate, in bits per second. Value may be specified as\n"
|
|
" bits or megabits, e.g. '4000000' is equivalent to '4M'. Default %dMbps.\n"
|
|
"--bugreport\n"
|
|
" Add additional information, such as a timestamp overlay, that is helpful\n"
|
|
" in videos captured to illustrate bugs.\n"
|
|
"--time-limit TIME\n"
|
|
" Set the maximum recording time, in seconds. Default / maximum is %d.\n"
|
|
"--verbose\n"
|
|
" Display interesting information on stdout.\n"
|
|
"--help\n"
|
|
" Show this message.\n"
|
|
"\n"
|
|
"Recording continues until Ctrl-C is hit or the time limit is reached.\n"
|
|
"\n",
|
|
kVersionMajor, kVersionMinor, gBitRate / 1000000, gTimeLimitSec
|
|
);
|
|
}
|
|
|
|
/*
|
|
* Parses args and kicks things off.
|
|
*/
|
|
int main(int argc, char* const argv[]) {
|
|
static const struct option longOptions[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "verbose", no_argument, NULL, 'v' },
|
|
{ "size", required_argument, NULL, 's' },
|
|
{ "bit-rate", required_argument, NULL, 'b' },
|
|
{ "time-limit", required_argument, NULL, 't' },
|
|
{ "bugreport", no_argument, NULL, 'u' },
|
|
// "unofficial" options
|
|
{ "show-device-info", no_argument, NULL, 'i' },
|
|
{ "show-frame-time", no_argument, NULL, 'f' },
|
|
{ "rotate", no_argument, NULL, 'r' },
|
|
{ "output-format", required_argument, NULL, 'o' },
|
|
{ "monotonic-time", no_argument, NULL, 'm' },
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
while (true) {
|
|
int optionIndex = 0;
|
|
int ic = getopt_long(argc, argv, "", longOptions, &optionIndex);
|
|
if (ic == -1) {
|
|
break;
|
|
}
|
|
|
|
switch (ic) {
|
|
case 'h':
|
|
usage();
|
|
return 0;
|
|
case 'v':
|
|
gVerbose = true;
|
|
break;
|
|
case 's':
|
|
if (!parseWidthHeight(optarg, &gVideoWidth, &gVideoHeight)) {
|
|
fprintf(stderr, "Invalid size '%s', must be width x height\n",
|
|
optarg);
|
|
return 2;
|
|
}
|
|
if (gVideoWidth == 0 || gVideoHeight == 0) {
|
|
fprintf(stderr,
|
|
"Invalid size %ux%u, width and height may not be zero\n",
|
|
gVideoWidth, gVideoHeight);
|
|
return 2;
|
|
}
|
|
gSizeSpecified = true;
|
|
break;
|
|
case 'b':
|
|
if (parseValueWithUnit(optarg, &gBitRate) != NO_ERROR) {
|
|
return 2;
|
|
}
|
|
if (gBitRate < kMinBitRate || gBitRate > kMaxBitRate) {
|
|
fprintf(stderr,
|
|
"Bit rate %dbps outside acceptable range [%d,%d]\n",
|
|
gBitRate, kMinBitRate, kMaxBitRate);
|
|
return 2;
|
|
}
|
|
break;
|
|
case 't':
|
|
gTimeLimitSec = atoi(optarg);
|
|
if (gTimeLimitSec == 0 || gTimeLimitSec > kMaxTimeLimitSec) {
|
|
fprintf(stderr,
|
|
"Time limit %ds outside acceptable range [1,%d]\n",
|
|
gTimeLimitSec, kMaxTimeLimitSec);
|
|
return 2;
|
|
}
|
|
break;
|
|
case 'u':
|
|
gWantInfoScreen = true;
|
|
gWantFrameTime = true;
|
|
break;
|
|
case 'i':
|
|
gWantInfoScreen = true;
|
|
break;
|
|
case 'f':
|
|
gWantFrameTime = true;
|
|
break;
|
|
case 'r':
|
|
// experimental feature
|
|
gRotate = true;
|
|
break;
|
|
case 'o':
|
|
if (strcmp(optarg, "mp4") == 0) {
|
|
gOutputFormat = FORMAT_MP4;
|
|
} else if (strcmp(optarg, "h264") == 0) {
|
|
gOutputFormat = FORMAT_H264;
|
|
} else if (strcmp(optarg, "frames") == 0) {
|
|
gOutputFormat = FORMAT_FRAMES;
|
|
} else if (strcmp(optarg, "raw-frames") == 0) {
|
|
gOutputFormat = FORMAT_RAW_FRAMES;
|
|
} else {
|
|
fprintf(stderr, "Unknown format '%s'\n", optarg);
|
|
return 2;
|
|
}
|
|
break;
|
|
case 'm':
|
|
gMonotonicTime = true;
|
|
break;
|
|
default:
|
|
if (ic != '?') {
|
|
fprintf(stderr, "getopt_long returned unexpected value 0x%x\n", ic);
|
|
}
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
if (optind != argc - 1) {
|
|
fprintf(stderr, "Must specify output file (see --help).\n");
|
|
return 2;
|
|
}
|
|
|
|
const char* fileName = argv[optind];
|
|
if (gOutputFormat == FORMAT_MP4) {
|
|
// MediaMuxer tries to create the file in the constructor, but we don't
|
|
// learn about the failure until muxer.start(), which returns a generic
|
|
// error code without logging anything. We attempt to create the file
|
|
// now for better diagnostics.
|
|
int fd = open(fileName, O_CREAT | O_RDWR, 0644);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Unable to open '%s': %s\n", fileName, strerror(errno));
|
|
return 1;
|
|
}
|
|
close(fd);
|
|
}
|
|
|
|
status_t err = recordScreen(fileName);
|
|
if (err == NO_ERROR) {
|
|
// Try to notify the media scanner. Not fatal if this fails.
|
|
notifyMediaScanner(fileName);
|
|
}
|
|
ALOGD(err == NO_ERROR ? "success" : "failed");
|
|
return (int) err;
|
|
}
|