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screenrecord.cpp
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/*
* Copyright 2013 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.
*/
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <inttypes.h>
#include <getopt.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <termios.h>
#include <unistd.h>
#define LOG_TAG "ScreenRecord"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <binder/IPCThreadState.h>
#include <utils/Errors.h>
#include <utils/Timers.h>
#include <utils/Trace.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/ISurfaceComposer.h>
#include <ui/DisplayInfo.h>
#include <media/openmax/OMX_IVCommon.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/MediaCodec.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/MediaMuxer.h>
#include <media/ICrypto.h>
#include <utils/Log.h>
#include "screenrecord.h"
#include "Overlay.h"
#include "FrameOutput.h"
#include "pushRaw.h"
using namespace android;
#define LOG_TAG "ScreenRecord"
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG ,__VA_ARGS__) // 定义LOGD类型
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG ,__VA_ARGS__) // 定义LOGI类型
#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,LOG_TAG ,__VA_ARGS__) // 定义LOGW类型
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG ,__VA_ARGS__) // 定义LOGE类型
#define LOGF(...) __android_log_print(ANDROID_LOG_FATAL,LOG_TAG ,__VA_ARGS__) // 定义LOGF类型
//定义一个nalu用于发送
padBuffer h264Nalu;
cmdBuffer streamCmd;
static const uint32_t kMinBitRate = 100000; // 0.1Mbps
static const uint32_t kMaxBitRate = 200 * 1000000; // 200Mbps
static const uint32_t kMaxTimeLimitSec = 3000; // 10s
static const uint32_t kFallbackWidth = 1080; // 1080p
static const uint32_t kFallbackHeight = 1920;
static const char* kMimeTypeAvc = "video/avc";
// Command-line parameters.
static bool gVerbose = true; // chatty on stdout
static bool gRotate = false; // rotate 90 degrees
static enum {
FORMAT_MP4, FORMAT_H264, FORMAT_FRAMES, FORMAT_RAW_FRAMES
} gOutputFormat = FORMAT_H264; // data format for output
static bool gSizeSpecified = false; // was size explicitly requested?
static bool gWantInfoScreen = false; // do we want initial info screen?
static bool gWantFrameTime = false; // do we want times on each frame?
static uint32_t gVideoWidth = 0; // default width+height
static uint32_t gVideoHeight = 0;
static uint32_t gBitRate = BITRATE; // 4Mbps
static uint32_t gTimeLimitSec = kMaxTimeLimitSec;
#define DISPLAY_FPS 25
struct sockaddr_in client_addr[2]; //音频、视频各一个通道
//定义横屏命令00 00 00 01:头 0101:横竖屏切换标识 01:一字节长 0:横屏 (10为十个字节长,十进制)
char across_screen[] = {0x00,0x00,0x00,0x01, 0x01,0x01, 0x01, 0x0, };
//定义竖屏命令00 00 00 01:头 0101:横竖屏切换标识 01:一字节长 1:竖屏
char vertical_screen[] = {0x00,0x00,0x00,0x01, 0x01,0x01, 0x01, 0x01, };
// Set by signal handler to stop recording.
static volatile bool gStopRequested = false;
// Previous signal handler state, restored after first hit.
static struct sigaction gOrigSigactionINT;
static struct sigaction gOrigSigactionHUP;
int onDataSync=0;
int rtpStop=0;
pthread_mutex_t m;
pthread_cond_t v;
typedef enum {
FRAME_ORIENTATION_0 = 0, //竖屏
FRAME_ORIENTATION_90 = 1, //横屏
FRAME_ORIENTATION_180 = 2,
FRAME_ORIENTATION_270 = 3
} gFrmFOrientationAngle;
enum H264NALTYPE
{
H264NT_NAL = 0,
H264NT_SLICE, //P 帧
H264NT_SLICE_DPA,
H264NT_SLICE_DPB,
H264NT_SLICE_DPC,
H264NT_SLICE_IDR, // I 帧
H264NT_SEI,
H264NT_SPS,
H264NT_PPS,
};
/*
*检查帧的类型
*/
int frame_struct(uint8_t *data, int flag)
{
// 5bits, 7.3.1 NAL unit syntax,
// ISO_IEC_14496-10-AVC-2003.pdf, page 44.
// 7: SPS, 8: PPS, 5: I Frame, 1: P Frame, 9: AUD, 6: SEI
unsigned char nut = (char)data[4] & 0x1f;
printf("%s %#x(%s)\n",flag==0?"from encode":"to decode", (char)data[4],
(nut == H264NT_SPS? "SPS":(nut == H264NT_PPS? "PPS":
(nut == H264NT_SLICE_IDR? "I":(nut == H264NT_SLICE? "P":(nut == 9? "AUD":(nut == H264NT_SEI? "SEI":"user-defined ")))))));
return nut;
}
/* The display orientation when start scrrenrecord, used to
calculate offset after rotation */
static int gOrigOrientation = -1;
/*
* The rotation Angle relative to the initial 'gOrigOrientation'.
*
* Note: 'gFrmOrientation' will be 90° if 'gOrigOrientation' initialize
* with 90° and get current mainDpyInfo.orientation 180°
*/
static int gFrmOrientation = 0;
/*
* Catch keyboard interrupt signals. On receipt, the "stop requested"
* flag is raised, and the original handler is restored (so that, if
* we get stuck finishing, a second Ctrl-C will kill the process).
*/
static void signalCatcher(int signum)
{
gStopRequested = true;
switch (signum) {
case SIGINT:
case SIGHUP:
sigaction(SIGINT, &gOrigSigactionINT, NULL);
sigaction(SIGHUP, &gOrigSigactionHUP, NULL);
break;
default:
abort();
break;
}
}
/*
* Configures signal handlers. The previous handlers are saved.
*
* If the command is run from an interactive adb shell, we get SIGINT
* when Ctrl-C is hit. If we're run from the host, the local adb process
* gets the signal, and we get a SIGHUP when the terminal disconnects.
*/
static status_t configureSignals() {
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = signalCatcher;
if (sigaction(SIGINT, &act, &gOrigSigactionINT) != 0) {
status_t err = -errno;
fprintf(stderr, "Unable to configure SIGINT handler: %s\n",
strerror(errno));
return err;
}
if (sigaction(SIGHUP, &act, &gOrigSigactionHUP) != 0) {
status_t err = -errno;
fprintf(stderr, "Unable to configure SIGHUP handler: %s\n",
strerror(errno));
return err;
}
return NO_ERROR;
}
/*
* Returns "true" if the device is rotated 90 degrees.
*/
static bool isDeviceRotated(int orientation) {
return orientation != DISPLAY_ORIENTATION_0 &&
orientation != DISPLAY_ORIENTATION_180;
}
static void updateFrmOrientation(int curOrientation) {
// Initialize when the program executes first time
if (gOrigOrientation == -1) {
gOrigOrientation = curOrientation;
gFrmOrientation = FRAME_ORIENTATION_0;
return;
}
gFrmOrientation = curOrientation - gOrigOrientation;
// Negative numbers expression that counterclockwise rotation
if (gFrmOrientation == -1)
gFrmOrientation = FRAME_ORIENTATION_270;
else if (gFrmOrientation == -2)
gFrmOrientation = FRAME_ORIENTATION_180;
else if (gFrmOrientation == -3)
gFrmOrientation = FRAME_ORIENTATION_90;
}
static status_t configureEncoder(float displayFps, sp<MediaCodec>* codec) {
sp<AMessage> format = new AMessage;
int codec_width = gVideoWidth > gVideoHeight ? gVideoHeight : gVideoWidth;
int codec_height = gVideoWidth > gVideoHeight ? gVideoWidth : gVideoHeight;
format->setInt32("width", codec_width);
format->setInt32("height", codec_height);
format->setString("mime", kMimeTypeAvc);
format->setInt32("color-format", OMX_COLOR_FormatAndroidOpaque);
format->setInt32("bitrate", gBitRate);
format->setFloat("frame-rate", displayFps);
format->setInt32("i-frame-interval", 1);
return (*codec)->configure(format, NULL, NULL,
MediaCodec::CONFIGURE_FLAG_ENCODE);
}
static status_t setEncoder(float displayFps, sp<MediaCodec>* pCodec) {
status_t err;
sp<ALooper> looper = new ALooper;
looper->setName("screenrecord_looper");
looper->start();
LOGD("Creating codec");
sp<MediaCodec> codec = MediaCodec::CreateByType(looper, kMimeTypeAvc, true);
if (codec == NULL) {
fprintf(stderr, "ERROR: unable to create %s codec instance\n",
kMimeTypeAvc);
return UNKNOWN_ERROR;
}
err = configureEncoder(displayFps, &codec);
if (err != NO_ERROR) {
fprintf(stderr, "ERROR: unable to configure %s codec at %dx%d (err=%d)\n",
kMimeTypeAvc, gVideoWidth, gVideoHeight, err);
codec->release();
return err;
}
*pCodec = codec;
return NO_ERROR;
}
/*
* Configures and starts the MediaCodec encoder. Obtains an input surface
* from the codec.
*/
static status_t prepareEncoder(float displayFps, sp<MediaCodec>* pCodec,
sp<IGraphicBufferProducer>* pBufferProducer) {
status_t err;
if (gVerbose) {
printf("Configuring recorder for %dx%d %s at %.2fMbps\n",
gVideoWidth, gVideoHeight, kMimeTypeAvc, gBitRate / 1000000.0);
printf("send to %s %d bitrate:%.2fMbps\n",h264Nalu.client_ip[0], h264Nalu.client_port[0], gBitRate / 1000000.0);
}
setEncoder(displayFps, pCodec); //设置编码器参数
LOGD("Creating encoder for input surface");
sp<IGraphicBufferProducer> bufferProducer;
err = (*pCodec)->createInputSurface(&bufferProducer); //在编码器对象中创建Surface buff消费者
if (err != NO_ERROR) {
fprintf(stderr,
"ERROR: unable to create encoder input surface (err=%d)\n", err);
(*pCodec)->release();
return err;
}
LOGD("Starting codec");
err = (*pCodec)->start();
if (err != NO_ERROR) {
fprintf(stderr, "ERROR: unable to start codec (err=%d)\n", err);
(*pCodec)->release();
return err;
}
LOGD("Codec prepared");
*pBufferProducer = bufferProducer;
return 0;
}
/*
* Sets the display projection, based on the display dimensions, video size,
* and device orientation.
*/
static status_t setDisplayProjection(const sp<IBinder>& dpy,
const DisplayInfo& mainDpyInfo) {
status_t err;
// Set the region of the layer stack we're interested in, which in our
// case is "all of it". If the app is rotated (so that the width of the
// app is based on the height of the display), reverse width/height.
bool deviceRotated = isDeviceRotated(mainDpyInfo.orientation);
uint32_t sourceWidth, sourceHeight;
if (!deviceRotated) {
sourceWidth = mainDpyInfo.w;
sourceHeight = mainDpyInfo.h;
} else {
ALOGV("using rotated width/height");
sourceHeight = mainDpyInfo.w;
sourceWidth = mainDpyInfo.h;
}
Rect layerStackRect(sourceWidth, sourceHeight);
// We need to preserve the aspect ratio of the display.
float displayAspect = (float) sourceHeight / (float) sourceWidth;
// Set the way we map the output onto the display surface (which will
// be e.g. 1280x720 for a 720p video). The rect is interpreted
// post-rotation, so if the display is rotated 90 degrees we need to
// "pre-rotate" it by flipping width/height, so that the orientation
// adjustment changes it back.
//
// We might want to encode a portrait display as landscape to use more
// of the screen real estate. (If players respect a 90-degree rotation
// hint, we can essentially get a 720x1280 video instead of 1280x720.)
// In that case, we swap the configured video width/height and then
// supply a rotation value to the display projection.
uint32_t videoWidth, videoHeight;
uint32_t outWidth, outHeight;
if (!gRotate) {
videoWidth = gVideoWidth;
videoHeight = gVideoHeight;
} else {
videoWidth = gVideoHeight;
videoHeight = gVideoWidth;
}
if (videoHeight > (uint32_t)(videoWidth * displayAspect)) {
// limited by narrow width; reduce height
outWidth = videoWidth;
outHeight = (uint32_t)(videoWidth * displayAspect);
} else {
// limited by short height; restrict width
outHeight = videoHeight;
outWidth = (uint32_t)(videoHeight / displayAspect);
}
uint32_t offX, offY;
offX = (videoWidth - outWidth) / 2;
offY = (videoHeight - outHeight) / 2;
updateFrmOrientation(mainDpyInfo.orientation);
if (gFrmOrientation == 1 || gFrmOrientation == 3) {
outWidth = gVideoHeight;
outHeight = gVideoWidth;
} else {
outWidth = gVideoWidth;
outHeight = gVideoHeight;
}
Rect displayRect(0, 0, outWidth, outHeight);
if (gVerbose) {
if (gRotate) {
printf("Rotated content area is %ux%u at offset x=%d y=%d\n",
outHeight, outWidth, offY, offX);
} else {
printf("Content area is %ux%u at offset x=%d y=%d\n",
outWidth, outHeight, offX, offY);
}
}
ALOGD("surface set DiaplayRect - %dx%d & get gFrmOrientation - %d",
outWidth, outHeight, mainDpyInfo.orientation);
SurfaceComposerClient::setDisplayProjection(dpy,
mainDpyInfo.orientation,
layerStackRect, displayRect);
return NO_ERROR;
}
/*
* Configures the virtual display. When this completes, virtual display
* frames will start arriving from the buffer producer.
*/
static status_t prepareVirtualDisplay(const DisplayInfo& mainDpyInfo,
const sp<IGraphicBufferProducer>& bufferProducer,
sp<IBinder>* pDisplayHandle) {
sp<IBinder> dpy = SurfaceComposerClient::createDisplay(
String8("ScreenRecorder"), false /*secure*/);
SurfaceComposerClient::openGlobalTransaction();
SurfaceComposerClient::setDisplaySurface(dpy, bufferProducer);
setDisplayProjection(dpy, mainDpyInfo);
SurfaceComposerClient::setDisplayLayerStack(dpy, 0); // default stack
SurfaceComposerClient::closeGlobalTransaction();
*pDisplayHandle = dpy;
return NO_ERROR;
}
/*
*通过横竖屏来填充cmd_buffer
*/
inline void func_setOrientation(unsigned char orientation)
{
bcopy(orientation==FRAME_ORIENTATION_90 ?across_screen:vertical_screen,
streamCmd.cmd_buffer, 15);
streamCmd.buffer_len = 15;
if(orientation==FRAME_ORIENTATION_90)
printf("across screen\n");
else if(orientation==FRAME_ORIENTATION_0)
printf("vertical screen\n");
}
/*
* Runs the MediaCodec encoder, sending the output to the MediaMuxer. The
* input frames are coming from the virtual display as fast as SurfaceFlinger
* wants to send them.
*
* Exactly one of muxer or rawFp must be non-null.
*
* The muxer must *not* have been started before calling.
*/
static status_t runEncoder(const sp<MediaCodec>& encoder,
const sp<MediaMuxer>& muxer, FILE* rawFp, const sp<IBinder>& mainDpy,
const sp<IBinder>& virtualDpy, unsigned char orientation) {
static int kTimeout = 250000; // be responsive on signal
status_t err;
ssize_t trackIdx = -1;
uint32_t debugNumFrames = 0;
int64_t startWhenNsec = systemTime(CLOCK_MONOTONIC);
int64_t endWhenNsec = startWhenNsec + seconds_to_nanoseconds(gTimeLimitSec);
DisplayInfo mainDpyInfo;
assert((rawFp == NULL && muxer != NULL) || (rawFp != NULL && muxer == NULL));
Vector<sp<ABuffer> > buffers;
err = encoder->getOutputBuffers(&buffers);
if (err != NO_ERROR) {
fprintf(stderr, "Unable to get output buffers (err=%d)\n", err);
return err;
}
// Run until we're signaled.
while (!gStopRequested) {
size_t bufIndex, offset, size;
int64_t ptsUsec;
uint32_t flags;
if (systemTime(CLOCK_MONOTONIC) > endWhenNsec) {
if (gVerbose) {
printf("Time limit reached\n");
}
break;
}
LOGD("Calling dequeueOutputBuffer");
err = encoder->dequeueOutputBuffer(&bufIndex, &offset, &size, &ptsUsec,
&flags, kTimeout);
LOGD("dequeueOutputBuffer returned %d", err);
switch (err) {
case NO_ERROR:
// got a buffer
if ((flags & MediaCodec::BUFFER_FLAG_CODECCONFIG) != 0) {
LOGD("Got codec config buffer (%zu bytes)", size);
printf("Got codec config buffer (%zu bytes)\n", size);
if (muxer != NULL) {
printf("ignore this -- we passed the CSD into MediaMuxer\n");
// ignore this -- we passed the CSD into MediaMuxer when
// we got the format change notification
size = 0;
}
}
if (size != 0) {
//LOGD("Got data in buffer %zu, size=%zu, pts=%" PRId64,
//bufIndex, size, ptsUsec);
{ // scope
ATRACE_NAME("orientation");
// Check orientation, update if it has changed.
//
// Polling for changes is inefficient and wrong, but the
// useful stuff is hard to get at without a Dalvik VM.
err = SurfaceComposerClient::getDisplayInfo(mainDpy,
&mainDpyInfo);
if (err != NO_ERROR) {
LOGW("getDisplayInfo(main) failed: %d", err);
} else if (orientation != mainDpyInfo.orientation) {
//LOGD("orientation changed, now %d", mainDpyInfo.orientation);
LOGD("get orientation-changed, old: %d - now: %d",
orientation, mainDpyInfo.orientation);
SurfaceComposerClient::openGlobalTransaction();
setDisplayProjection(virtualDpy, mainDpyInfo);
SurfaceComposerClient::closeGlobalTransaction();
orientation = mainDpyInfo.orientation;
//针对后面的翻转事件
func_setOrientation(mainDpyInfo.orientation);
//直接通过命令通道给客户端发更新横竖屏事件
streamCmd.buffer_len = 15;
send(h264Nalu.connfd[cmd_pipe], streamCmd.cmd_buffer, streamCmd.buffer_len, 0);
}
}
// If the virtual display isn't providing us with timestamps,
// use the current time. This isn't great -- we could get
// decoded data in clusters -- but we're not expecting
// to hit this anyway.
if (ptsUsec == 0) {
ptsUsec = systemTime(SYSTEM_TIME_MONOTONIC) / 1000;
}
if (muxer == NULL) {
#if 0
fwrite(buffers[bufIndex]->data(), 1, size, rawFp);
// Flush the data immediately in case we're streaming.
// We don't want to do this if all we've written is
// the SPS/PPS data because mplayer gets confused.
if ((flags & MediaCodec::BUFFER_FLAG_CODECCONFIG) == 0) {
printf("flush raw buffer\n");
fflush(rawFp);
}
#endif
#if 1
frame_struct(buffers[bufIndex]->data(), 0);
//printf("-------------------------------\n");
bcopy(buffers[bufIndex]->data(), h264Nalu.pad_buffer, size);
h264Nalu.buffer_len = size;
onDataSync = 1;
//printf("onDataSync:%d\n", onDataSync);
pthread_cond_broadcast(&v);
#endif
} else {
// The MediaMuxer docs are unclear, but it appears that we
// need to pass either the full set of BufferInfo flags, or
// (flags & BUFFER_FLAG_SYNCFRAME).
//
// If this blocks for too long we could drop frames. We may
// want to queue these up and do them on a different thread.
ATRACE_NAME("write sample");
assert(trackIdx != -1);
err = muxer->writeSampleData(buffers[bufIndex], trackIdx,
ptsUsec, flags);
if (err != NO_ERROR) {
fprintf(stderr,
"Failed writing data to muxer (err=%d)\n", err);
return err;
}
}
debugNumFrames++;
}
err = encoder->releaseOutputBuffer(bufIndex);
if (err != NO_ERROR) {
fprintf(stderr, "Unable to release output buffer (err=%d)\n",
err);
return err;
}
if ((flags & MediaCodec::BUFFER_FLAG_EOS) != 0) {
// Not expecting EOS from SurfaceFlinger. Go with it.
ALOGI("Received end-of-stream");
gStopRequested = true;
}
break;
case -EAGAIN: // INFO_TRY_AGAIN_LATER
LOGD("Got -EAGAIN, looping");
break;
case INFO_FORMAT_CHANGED: // INFO_OUTPUT_FORMAT_CHANGED
{
// Format includes CSD, which we must provide to muxer.
LOGD("Encoder format changed");
sp<AMessage> newFormat;
encoder->getOutputFormat(&newFormat);
if (muxer != NULL) {
trackIdx = muxer->addTrack(newFormat);
LOGD("Starting muxer");
err = muxer->start();
if (err != NO_ERROR) {
fprintf(stderr, "Unable to start muxer (err=%d)\n", err);
return err;
}
}
}
break;
case INFO_OUTPUT_BUFFERS_CHANGED: // INFO_OUTPUT_BUFFERS_CHANGED
// Not expected for an encoder; handle it anyway.
LOGD("Encoder buffers changed");
err = encoder->getOutputBuffers(&buffers);
if (err != NO_ERROR) {
fprintf(stderr,
"Unable to get new output buffers (err=%d)\n", err);
return err;
}
break;
case INVALID_OPERATION:
LOGW("dequeueOutputBuffer returned INVALID_OPERATION");
return err;
default:
fprintf(stderr,
"Got weird result %d from dequeueOutputBuffer\n", err);
return err;
}
}
LOGD("Encoder stopping (req=%d)", gStopRequested);
if (gVerbose) {
printf("Encoder stopping; recorded %u frames in %" PRId64 " seconds\n",
debugNumFrames, nanoseconds_to_seconds(
systemTime(CLOCK_MONOTONIC) - startWhenNsec));
}
return NO_ERROR;
}
/*
* 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"
LOGD("raw video output to tty (fd=%d)", fd);
struct termios term;
if (tcgetattr(fd, &term) == 0) {
cfmakeraw(&term);
if (tcsetattr(fd, TCSANOW, &term) == 0) {
LOGD("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;
}
mainDpyInfo.fps = DISPLAY_FPS;
h264Nalu.fps = mainDpyInfo.fps;
if (gVerbose) {
printf("Main display is %dx%d @%.2ffps (orientation=%u) capture:%ds\n",
mainDpyInfo.w, mainDpyInfo.h, mainDpyInfo.fps,
mainDpyInfo.orientation, kMaxTimeLimitSec);
}
bool rotated = isDeviceRotated(mainDpyInfo.orientation);
if (gVideoWidth == 0) {
gVideoWidth = rotated ? mainDpyInfo.h : mainDpyInfo.w;
}
if (gVideoHeight == 0) {
gVideoHeight = rotated ? mainDpyInfo.w : mainDpyInfo.h;
}
//直接给命令通道发送横竖屏消息
func_setOrientation(mainDpyInfo.orientation);
streamCmd.buffer_len = 15;
send(h264Nalu.connfd[cmd_pipe], streamCmd.cmd_buffer, streamCmd.buffer_len, 0);
// 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) {
LOGD("Retrying with 1080p");
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();
//将刚才拿到的消费者传入,创建虚拟屏.
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();
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;
printf("goto capture h264\n");
rawFp = prepareRawOutput(fileName);
if (rawFp == NULL) {
if (encoder != NULL) encoder->release();
return -1;
}
// 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.
*/
#if 1
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;
LOGW("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) {
LOGW("waitpid(%d) returned %d (errno=%d)", pid, actualPid, errno);
} else if (status != 0) {
LOGW("'am broadcast' exited with status=%d", status);
} else {
LOGD("'am broadcast' exited successfully");
}
} else {
if (!gVerbose) {
// non-verbose, suppress 'am' output
LOGD("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;
}
}
#endif
int wait_client_connect(int hope_num)
{
unsigned short port = 8000;
int sockfd,err_log, client_num=0;
socklen_t cliaddr_len;
int reuseaddr = 1;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(sockfd < 0)
{
perror("socket");
return -1;
}
setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&reuseaddr,sizeof(reuseaddr));
struct sockaddr_in my_addr;
bzero(&my_addr, sizeof(my_addr));
my_addr.sin_family = AF_INET;
my_addr.sin_port = htons(port);
my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
err_log = bind(sockfd, (struct sockaddr*)&my_addr, sizeof(my_addr));
if(err_log != 0)
{
perror("binding");
close(sockfd);
return -1;
}
err_log = listen(sockfd, hope_num); // 等待队列为num
if(err_log != 0)
{
perror("listen");
close(sockfd);
return -1;
}
client_num=0;
while(client_num <= hope_num-1)
{
cliaddr_len = sizeof(sockaddr_in);
h264Nalu.connfd[client_num] = accept(sockfd, (struct sockaddr*)&client_addr[client_num], &cliaddr_len);
if(h264Nalu.connfd[client_num] < 0)
{
perror("accept");
continue;
}
inet_ntop(AF_INET, &client_addr[client_num].sin_addr, h264Nalu.client_ip[client_num], INET_ADDRSTRLEN);
printf("-----------%d------\n", client_num);