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gstEncoder.cpp
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gstEncoder.cpp
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/*
* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "gstEncoder.h"
#include "filesystem.h"
#include "timespec.h"
#include "cudaMappedMemory.h"
#include "cudaRGB.h"
#include "cudaYUV.h"
#include <gst/gst.h>
#include <gst/app/gstappsrc.h>
#include <sstream>
#include <string.h>
#include <strings.h>
#include <unistd.h>
// constructor
gstEncoder::gstEncoder()
{
mAppSrc = NULL;
mBus = NULL;
mBufferCaps = NULL;
mPipeline = NULL;
mNeedData = false;
mOutputPort = 0;
mWidth = 0;
mHeight = 0;
mCodec = GST_CODEC_H264;
mCpuRGBA = NULL;
mGpuRGBA = NULL;
mCpuI420 = NULL;
mGpuI420 = NULL;
}
// destructor
gstEncoder::~gstEncoder()
{
// send EOS
mNeedData = false;
printf(LOG_GSTREAMER "gstEncoder - shutting down pipeline, sending EOS\n");
GstFlowReturn eos_result = gst_app_src_end_of_stream(GST_APP_SRC(mAppSrc));
if( eos_result != 0 )
printf(LOG_GSTREAMER "gstEncoder - failed sending appsrc EOS (result %u)\n", eos_result);
sleep(1);
// stop pipeline
printf(LOG_GSTREAMER "gstEncoder - transitioning pipeline to GST_STATE_NULL\n");
const GstStateChangeReturn result = gst_element_set_state(mPipeline, GST_STATE_NULL);
if( result != GST_STATE_CHANGE_SUCCESS )
printf(LOG_GSTREAMER "gstEncoder - failed to set pipeline state to NULL (error %u)\n", result);
sleep(1);
printf(LOG_GSTREAMER "gstEncoder - pipeline shutdown complete\n");
}
// Create
gstEncoder* gstEncoder::Create( gstCodec codec, uint32_t width, uint32_t height, const char* filename )
{
return Create(codec, width, height, filename, NULL, 0);
}
// Create
gstEncoder* gstEncoder::Create( gstCodec codec, uint32_t width, uint32_t height, const char* ipAddress, uint16_t port )
{
return Create(codec, width, height, NULL, ipAddress, port);
}
// Create
gstEncoder* gstEncoder::Create( gstCodec codec, uint32_t width, uint32_t height, const char* filename, const char* ipAddress, uint16_t port )
{
gstEncoder* enc = new gstEncoder();
if( !enc )
return NULL;
if( !enc->init(codec, width, height, filename, ipAddress, port) )
{
printf(LOG_GSTREAMER "gstEncoder::Create() failed\n");
return NULL;
}
return enc;
}
// init
bool gstEncoder::init( gstCodec codec, uint32_t width, uint32_t height, const char* filename, const char* ipAddress, uint16_t port )
{
mCodec = codec;
mWidth = width;
mHeight = height;
if( mWidth == 0 || mHeight == 0 )
return false;
if( filename != NULL )
mOutputPath = filename;
if( ipAddress != NULL )
mOutputIP = ipAddress;
mOutputPort = port;
if( !filename && !ipAddress )
return false;
// initialize GStreamer libraries
if( !gstreamerInit() )
{
printf(LOG_GSTREAMER "failed to initialize gstreamer API\n");
return NULL;
}
// build caps string
if( !buildCapsStr() )
{
printf(LOG_GSTREAMER "gstEncoder - failed to build caps string\n");
return false;
}
mBufferCaps = gst_caps_from_string(mCapsStr.c_str());
if( !mBufferCaps )
{
printf(LOG_GSTREAMER "gstEncoder - failed to parse caps from string\n");
return false;
}
// build pipeline string
if( !buildLaunchStr() )
{
printf(LOG_GSTREAMER "gstEncoder - failed to build pipeline string\n");
return false;
}
// create the pipeline
GError* err = NULL;
mPipeline = gst_parse_launch(mLaunchStr.c_str(), &err);
if( err != NULL )
{
printf(LOG_GSTREAMER "gstEncoder - failed to create pipeline\n");
printf(LOG_GSTREAMER " (%s)\n", err->message);
g_error_free(err);
return false;
}
GstPipeline* pipeline = GST_PIPELINE(mPipeline);
if( !pipeline )
{
printf(LOG_GSTREAMER "gstEncoder - failed to cast GstElement into GstPipeline\n");
return false;
}
// retrieve pipeline bus
mBus = gst_pipeline_get_bus(pipeline);
if( !mBus )
{
printf(LOG_GSTREAMER "gstEncoder - failed to retrieve GstBus from pipeline\n");
return false;
}
// add watch for messages (disabled when we poll the bus ourselves, instead of gmainloop)
//gst_bus_add_watch(mBus, (GstBusFunc)gst_message_print, NULL);
// get the appsrc element
GstElement* appsrcElement = gst_bin_get_by_name(GST_BIN(pipeline), "mysource");
GstAppSrc* appsrc = GST_APP_SRC(appsrcElement);
if( !appsrcElement || !appsrc )
{
printf(LOG_GSTREAMER "gstEncoder - failed to retrieve AppSrc element from pipeline\n");
return false;
}
mAppSrc = appsrcElement;
g_signal_connect(appsrcElement, "need-data", G_CALLBACK(onNeedData), this);
g_signal_connect(appsrcElement, "enough-data", G_CALLBACK(onEnoughData), this);
#if GST_CHECK_VERSION(1,0,0)
gst_app_src_set_caps(appsrc, mBufferCaps);
#endif
// set stream properties
gst_app_src_set_stream_type(appsrc, GST_APP_STREAM_TYPE_STREAM);
g_object_set(G_OBJECT(mAppSrc), "is-live", TRUE, NULL);
g_object_set(G_OBJECT(mAppSrc), "do-timestamp", TRUE, NULL);
// transition pipline to STATE_PLAYING
printf(LOG_GSTREAMER "gstEncoder - transitioning pipeline to GST_STATE_PLAYING\n");
const GstStateChangeReturn result = gst_element_set_state(mPipeline, GST_STATE_PLAYING);
if( result == GST_STATE_CHANGE_ASYNC )
{
#if 0
GstMessage* asyncMsg = gst_bus_timed_pop_filtered(mBus, 5 * GST_SECOND,
(GstMessageType)(GST_MESSAGE_ASYNC_DONE|GST_MESSAGE_ERROR));
if( asyncMsg != NULL )
{
gst_message_print(mBus, asyncMsg, this);
gst_message_unref(asyncMsg);
}
else
printf(LOG_GSTREAMER "gstEncoder - NULL message after transitioning pipeline to PLAYING...\n");
#endif
}
else if( result != GST_STATE_CHANGE_SUCCESS )
{
printf(LOG_GSTREAMER "gstEncoder - failed to set pipeline state to PLAYING (error %u)\n", result);
return false;
}
return true;
}
// buildCapsStr
bool gstEncoder::buildCapsStr()
{
std::ostringstream ss;
#if GST_CHECK_VERSION(1,0,0)
ss << "video/x-raw";
ss << ",width=" << mWidth;
ss << ",height=" << mHeight;
ss << ",format=(string)I420";
ss << ",framerate=30/1";
#else
ss << "video/x-raw-yuv";
ss << ",width=" << mWidth;
ss << ",height=" << mHeight;
ss << ",format=(fourcc)I420";
ss << ",framerate=30/1";
#endif
mCapsStr = ss.str();
printf(LOG_GSTREAMER "gstEncoder - buffer caps string:\n");
printf("%s\n", mCapsStr.c_str());
return true;
}
// buildLaunchStr
bool gstEncoder::buildLaunchStr()
{
const size_t fileLen = mOutputPath.size();
const size_t ipLen = mOutputIP.size();
std::ostringstream ss;
ss << "appsrc name=mysource ! ";
#if GST_CHECK_VERSION(1,0,0)
ss << mCapsStr << " ! ";
if( mCodec == GST_CODEC_H264 )
ss << "omxh264enc ! video/x-h264 ! "; // TODO: investigate quality-level replacement
else if( mCodec == GST_CODEC_H265 )
ss << "omxh265enc ! video/x-h265 ! ";
#else
if( mCodec == GST_CODEC_H264 )
ss << "nv_omx_h264enc quality-level=2 ! video/x-h264 ! ";
else if( mCodec == GST_CODEC_H265 )
ss << "nv_omx_h265enc quality-level=2 ! video/x-h265 ! ";
#endif
if( fileLen > 0 && ipLen > 0 )
ss << "nvtee name=t ! ";
if( fileLen > 0 )
{
std::string ext = fileExtension(mOutputPath);
if( strcasecmp(ext.c_str(), "mkv") == 0 )
{
//ss << "matroskamux ! queue ! ";
ss << "matroskamux ! ";
}
else if( strcasecmp(ext.c_str(), "mp4") == 0 )
{
if( mCodec == GST_CODEC_H264 )
ss << "h264parse ! qtmux ! ";
else if( mCodec == GST_CODEC_H265 )
ss << "h265parse ! qtmux ! ";
}
else if( strcasecmp(ext.c_str(), "h264") != 0 && strcasecmp(ext.c_str(), "h265") != 0 )
{
printf(LOG_GSTREAMER "gstEncoder - invalid output extension %s\n", ext.c_str());
return false;
}
ss << "filesink location=" << mOutputPath;
if( ipLen > 0 )
ss << " t. ! "; // begin the second tee
}
if( ipLen > 0 )
{
ss << "rtph264pay config-interval=1 ! udpsink host=";
ss << mOutputIP << " ";
if( mOutputPort != 0 )
ss << "port=" << mOutputPort;
ss << " auto-multicast=true";
}
mLaunchStr = ss.str();
printf(LOG_GSTREAMER "gstEncoder - pipeline launch string:\n");
printf("%s\n", mLaunchStr.c_str());
return true;
}
// onNeedData
void gstEncoder::onNeedData( GstElement* pipeline, guint size, gpointer user_data )
{
printf(LOG_GSTREAMER "gstEncoder - AppSrc requesting data (%u bytes)\n", size);
if( !user_data )
return;
gstEncoder* enc = (gstEncoder*)user_data;
enc->mNeedData = true;
}
// onEnoughData
void gstEncoder::onEnoughData( GstElement* pipeline, gpointer user_data )
{
printf(LOG_GSTREAMER "gstEncoder - AppSrc signalling enough data\n");
if( !user_data )
return;
gstEncoder* enc = (gstEncoder*)user_data;
enc->mNeedData = false;
}
// EncodeFrame
bool gstEncoder::EncodeI420( void* buffer, size_t size )
{
if( !buffer || size == 0 )
return false;
if( !mNeedData )
{
printf(LOG_GSTREAMER "gstEncoder - pipeline full, skipping frame (%zu bytes)\n", size);
return true;
}
#if GST_CHECK_VERSION(1,0,0)
// allocate gstreamer buffer memory
GstBuffer* gstBuffer = gst_buffer_new_allocate(NULL, size, NULL);
// map the buffer for write access
GstMapInfo map;
if( gst_buffer_map(gstBuffer, &map, GST_MAP_WRITE) )
{
if( map.size != size )
{
printf(LOG_GSTREAMER "gstEncoder - gst_buffer_map() size mismatch, got %zu bytes, expected %zu bytes\n", map.size, size);
gst_buffer_unref(gstBuffer);
return false;
}
memcpy(map.data, buffer, size);
gst_buffer_unmap(gstBuffer, &map);
}
else
{
printf(LOG_GSTREAMER "gstEncoder - failed to map gstreamer buffer memory (%zu bytes)\n", size);
gst_buffer_unref(gstBuffer);
return false;
}
#else
// convert memory to GstBuffer
GstBuffer* gstBuffer = gst_buffer_new();
GST_BUFFER_MALLOCDATA(gstBuffer) = (guint8*)g_malloc(size);
GST_BUFFER_DATA(gstBuffer) = GST_BUFFER_MALLOCDATA(gstBuffer);
GST_BUFFER_SIZE(gstBuffer) = size;
//static size_t num_frame = 0;
//GST_BUFFER_TIMESTAMP(gstBuffer) = (GstClockTime)((num_frame / 30.0) * 1e9); // for 1.0, use GST_BUFFER_PTS or GST_BUFFER_DTS instead
//num_frame++;
if( mBufferCaps != NULL )
gst_buffer_set_caps(gstBuffer, mBufferCaps);
memcpy(GST_BUFFER_DATA(gstBuffer), buffer, size);
#endif
// queue buffer to gstreamer
GstFlowReturn ret;
g_signal_emit_by_name(mAppSrc, "push-buffer", gstBuffer, &ret);
gst_buffer_unref(gstBuffer);
if( ret != 0 )
printf(LOG_GSTREAMER "gstEncoder - AppSrc pushed buffer abnormally (result %u)\n", ret);
// check for any messages
while(true)
{
GstMessage* msg = gst_bus_pop(mBus);
if( !msg )
break;
gst_message_print(mBus, msg, this);
gst_message_unref(msg);
}
return true;
}
// EncodeRGBA
bool gstEncoder::EncodeRGBA( uint8_t* buffer )
{
if( !buffer )
return false;
const size_t i420Size = (mWidth * mHeight * 12) / 8;
if( !mCpuI420 || !mGpuI420 )
{
if( !cudaAllocMapped(&mCpuI420, &mGpuI420, i420Size) )
{
printf(LOG_GSTREAMER "gstEncoder - failed to allocate CUDA memory for YUV I420 conversion\n");
return false;
}
}
if( CUDA_FAILED(cudaRGBAToI420((uchar4*)buffer, (uint8_t*)mGpuI420, mWidth, mHeight)) )
{
printf(LOG_GSTREAMER "gstEncoder - failed convert RGBA image to I420\n");
return false;
}
CUDA(cudaDeviceSynchronize());
return EncodeI420(mCpuI420, i420Size);
}
// EncodeRGBA
bool gstEncoder::EncodeRGBA( float* buffer, float maxPixelValue )
{
if( !buffer )
return false;
if( !mCpuRGBA || !mGpuRGBA )
{
if( !cudaAllocMapped(&mCpuRGBA, &mGpuRGBA, mWidth * mHeight * 4 * sizeof(uint8_t)) )
{
printf(LOG_GSTREAMER "gstEncoder - failed to allocate CUDA memory for RGBA8 conversion\n");
return false;
}
}
if( CUDA_FAILED(cudaRGBAToRGBA8((float4*)buffer, (uchar4*)mGpuRGBA, mWidth, mHeight, make_float2(0.0f, maxPixelValue))) )
{
printf(LOG_GSTREAMER "gstEncoder - failed convert RGBA32f image to RGBA8\n");
return false;
}
return EncodeRGBA((uint8_t*)mGpuRGBA);
}