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kvs_gstreamer_sample.cpp
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kvs_gstreamer_sample.cpp
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#include <gst/gst.h>
#include <gst/app/gstappsink.h>
#include <string.h>
#include <chrono>
#include <Logger.h>
#include "KinesisVideoProducer.h"
#include <vector>
#include <stdlib.h>
#include <mutex>
#include <IotCertCredentialProvider.h>
using namespace std;
using namespace std::chrono;
using namespace com::amazonaws::kinesis::video;
using namespace log4cplus;
#ifdef __cplusplus
extern "C" {
#endif
int gstreamer_init(int, char **);
#ifdef __cplusplus
}
#endif
LOGGER_TAG("com.amazonaws.kinesis.video.gstreamer");
#define DEFAULT_RETENTION_PERIOD_HOURS 2
#define DEFAULT_KMS_KEY_ID ""
#define DEFAULT_STREAMING_TYPE STREAMING_TYPE_REALTIME
#define DEFAULT_CONTENT_TYPE "video/h264"
#define DEFAULT_MAX_LATENCY_SECONDS 60
#define DEFAULT_FRAGMENT_DURATION_MILLISECONDS 2000
#define DEFAULT_TIMECODE_SCALE_MILLISECONDS 1
#define DEFAULT_KEY_FRAME_FRAGMENTATION TRUE
#define DEFAULT_FRAME_TIMECODES TRUE
#define DEFAULT_ABSOLUTE_FRAGMENT_TIMES TRUE
#define DEFAULT_FRAGMENT_ACKS TRUE
#define DEFAULT_RESTART_ON_ERROR TRUE
#define DEFAULT_RECALCULATE_METRICS TRUE
#define DEFAULT_STREAM_FRAMERATE 25
#define DEFAULT_AVG_BANDWIDTH_BPS (4 * 1024 * 1024)
#define DEFAULT_BUFFER_DURATION_SECONDS 120
#define DEFAULT_REPLAY_DURATION_SECONDS 40
#define DEFAULT_CONNECTION_STALENESS_SECONDS 60
#define DEFAULT_CODEC_ID "V_MPEG4/ISO/AVC"
#define DEFAULT_TRACKNAME "kinesis_video"
#define DEFAULT_FRAME_DURATION_MS 1
#define DEFAULT_CREDENTIAL_ROTATION_SECONDS 3600
#define DEFAULT_CREDENTIAL_EXPIRATION_SECONDS 180
typedef enum _StreamSource {
FILE_SOURCE,
LIVE_SOURCE,
RTSP_SOURCE
} StreamSource;
typedef struct _FileInfo {
_FileInfo():
path(""),
last_fragment_ts(0) {}
string path;
uint64_t last_fragment_ts;
} FileInfo;
typedef struct _CustomData {
_CustomData():
streamSource(LIVE_SOURCE),
h264_stream_supported(false),
synthetic_dts(0),
last_unpersisted_file_idx(0),
stream_status(STATUS_SUCCESS),
base_pts(0),
max_frame_pts(0),
key_frame_pts(0),
main_loop(NULL),
first_pts(GST_CLOCK_TIME_NONE),
use_absolute_fragment_times(true) {
producer_start_time = chrono::duration_cast<nanoseconds>(systemCurrentTime().time_since_epoch()).count();
}
GMainLoop *main_loop;
unique_ptr<KinesisVideoProducer> kinesis_video_producer;
shared_ptr<KinesisVideoStream> kinesis_video_stream;
bool stream_started;
bool h264_stream_supported;
char *stream_name;
mutex file_list_mtx;
// list of files to upload.
vector<FileInfo> file_list;
// index of file in file_list that application is currently trying to upload.
uint32_t current_file_idx;
// index of last file in file_list that haven't been persisted.
atomic_uint last_unpersisted_file_idx;
// stores any error status code reported by StreamErrorCallback.
atomic_uint stream_status;
// Since each file's timestamp start at 0, need to add all subsequent file's timestamp to base_pts starting from the
// second file to avoid fragment overlapping. When starting a new putMedia session, this should be set to 0.
// Unit: ns
uint64_t base_pts;
// Max pts in a file. This will be added to the base_pts for the next file. When starting a new putMedia session,
// this should be set to 0.
// Unit: ns
uint64_t max_frame_pts;
// When uploading file, store the pts of frames that has flag FRAME_FLAG_KEY_FRAME. When the entire file has been uploaded,
// key_frame_pts contains the timetamp of the last fragment in the file. key_frame_pts is then stored into last_fragment_ts
// of the file.
// Unit: ns
uint64_t key_frame_pts;
// Used in file uploading only. Assuming frame timestamp are relative. Add producer_start_time to each frame's
// timestamp to convert them to absolute timestamp. This way fragments dont overlap after token rotation when doing
// file uploading.
uint64_t producer_start_time;
volatile StreamSource streamSource;
string rtsp_url;
unique_ptr<Credentials> credential;
uint64_t synthetic_dts;
bool use_absolute_fragment_times;
// Pts of first video frame
uint64_t first_pts;
} CustomData;
namespace com { namespace amazonaws { namespace kinesis { namespace video {
class SampleClientCallbackProvider : public ClientCallbackProvider {
public:
UINT64 getCallbackCustomData() override {
return reinterpret_cast<UINT64> (this);
}
StorageOverflowPressureFunc getStorageOverflowPressureCallback() override {
return storageOverflowPressure;
}
static STATUS storageOverflowPressure(UINT64 custom_handle, UINT64 remaining_bytes);
};
class SampleStreamCallbackProvider : public StreamCallbackProvider {
UINT64 custom_data_;
public:
SampleStreamCallbackProvider(UINT64 custom_data) : custom_data_(custom_data) {}
UINT64 getCallbackCustomData() override {
return custom_data_;
}
StreamConnectionStaleFunc getStreamConnectionStaleCallback() override {
return streamConnectionStaleHandler;
};
StreamErrorReportFunc getStreamErrorReportCallback() override {
return streamErrorReportHandler;
};
DroppedFrameReportFunc getDroppedFrameReportCallback() override {
return droppedFrameReportHandler;
};
FragmentAckReceivedFunc getFragmentAckReceivedCallback() override {
return fragmentAckReceivedHandler;
};
private:
static STATUS
streamConnectionStaleHandler(UINT64 custom_data, STREAM_HANDLE stream_handle,
UINT64 last_buffering_ack);
static STATUS
streamErrorReportHandler(UINT64 custom_data, STREAM_HANDLE stream_handle, UPLOAD_HANDLE upload_handle, UINT64 errored_timecode,
STATUS status_code);
static STATUS
droppedFrameReportHandler(UINT64 custom_data, STREAM_HANDLE stream_handle,
UINT64 dropped_frame_timecode);
static STATUS
fragmentAckReceivedHandler( UINT64 custom_data, STREAM_HANDLE stream_handle,
UPLOAD_HANDLE upload_handle, PFragmentAck pFragmentAck);
};
class SampleCredentialProvider : public StaticCredentialProvider {
// Test rotation period is 40 second for the grace period.
const std::chrono::duration<uint64_t> ROTATION_PERIOD = std::chrono::seconds(DEFAULT_CREDENTIAL_ROTATION_SECONDS);
public:
SampleCredentialProvider(const Credentials &credentials) :
StaticCredentialProvider(credentials) {}
void updateCredentials(Credentials &credentials) override {
// Copy the stored creds forward
credentials = credentials_;
// Update only the expiration
auto now_time = std::chrono::duration_cast<std::chrono::seconds>(
systemCurrentTime().time_since_epoch());
auto expiration_seconds = now_time + ROTATION_PERIOD;
credentials.setExpiration(std::chrono::seconds(expiration_seconds.count()));
LOG_INFO("New credentials expiration is " << credentials.getExpiration().count());
}
};
class SampleDeviceInfoProvider : public DefaultDeviceInfoProvider {
public:
device_info_t getDeviceInfo() override {
auto device_info = DefaultDeviceInfoProvider::getDeviceInfo();
// Set the storage size to 128mb
device_info.storageInfo.storageSize = 128 * 1024 * 1024;
return device_info;
}
};
STATUS
SampleClientCallbackProvider::storageOverflowPressure(UINT64 custom_handle, UINT64 remaining_bytes) {
UNUSED_PARAM(custom_handle);
LOG_WARN("Reporting storage overflow. Bytes remaining " << remaining_bytes);
return STATUS_SUCCESS;
}
STATUS SampleStreamCallbackProvider::streamConnectionStaleHandler(UINT64 custom_data,
STREAM_HANDLE stream_handle,
UINT64 last_buffering_ack) {
LOG_WARN("Reporting stream stale. Last ACK received " << last_buffering_ack);
return STATUS_SUCCESS;
}
STATUS
SampleStreamCallbackProvider::streamErrorReportHandler(UINT64 custom_data, STREAM_HANDLE stream_handle,
UPLOAD_HANDLE upload_handle, UINT64 errored_timecode, STATUS status_code) {
LOG_ERROR("Reporting stream error. Errored timecode: " << errored_timecode << " Status: "
<< status_code);
CustomData *data = reinterpret_cast<CustomData *>(custom_data);
bool terminate_pipeline = false;
// Terminate pipeline if error is not retriable or if error is retriable but we are streaming file.
// When streaming file, we choose to terminate the pipeline on error because the easiest way to recover
// is to stream the file from the beginning again.
// In realtime streaming, retriable error can be handled underneath. Otherwise terminate pipeline
// and store error status if error is fatal.
if ((IS_RETRIABLE_ERROR(status_code) && data->streamSource == FILE_SOURCE) ||
(!IS_RETRIABLE_ERROR(status_code) && !IS_RECOVERABLE_ERROR(status_code))) {
data->stream_status = status_code;
terminate_pipeline = true;
}
if (terminate_pipeline && data->main_loop != NULL) {
LOG_WARN("Terminating pipeline due to unrecoverable stream error: " << status_code);
g_main_loop_quit(data->main_loop);
}
return STATUS_SUCCESS;
}
STATUS
SampleStreamCallbackProvider::droppedFrameReportHandler(UINT64 custom_data, STREAM_HANDLE stream_handle,
UINT64 dropped_frame_timecode) {
LOG_WARN("Reporting dropped frame. Frame timecode " << dropped_frame_timecode);
return STATUS_SUCCESS;
}
STATUS
SampleStreamCallbackProvider::fragmentAckReceivedHandler(UINT64 custom_data, STREAM_HANDLE stream_handle,
UPLOAD_HANDLE upload_handle, PFragmentAck pFragmentAck) {
CustomData *data = reinterpret_cast<CustomData *>(custom_data);
if (data->streamSource == FILE_SOURCE && pFragmentAck->ackType == FRAGMENT_ACK_TYPE_PERSISTED) {
std::unique_lock<std::mutex> lk(data->file_list_mtx);
uint32_t last_unpersisted_file_idx = data->last_unpersisted_file_idx.load();
uint64_t last_frag_ts = data->file_list.at(last_unpersisted_file_idx).last_fragment_ts /
duration_cast<nanoseconds>(milliseconds(DEFAULT_TIMECODE_SCALE_MILLISECONDS)).count();
if (last_frag_ts != 0 && last_frag_ts == pFragmentAck->timestamp) {
data->last_unpersisted_file_idx = last_unpersisted_file_idx + 1;
LOG_INFO("Successfully persisted file " << data->file_list.at(last_unpersisted_file_idx).path);
}
}
LOG_DEBUG("Reporting fragment ack received. Ack timecode " << pFragmentAck->timestamp);
return STATUS_SUCCESS;
}
} // namespace video
} // namespace kinesis
} // namespace amazonaws
} // namespace com;
static void eos_cb(GstElement *sink, CustomData *data) {
// bookkeeping base_pts. add 1ms to avoid overlap.
data->base_pts += + data->max_frame_pts + duration_cast<nanoseconds>(milliseconds(1)).count();
data->max_frame_pts = 0;
{
std::unique_lock<std::mutex> lk(data->file_list_mtx);
// store file's last fragment's timestamp.
data->file_list.at(data->current_file_idx).last_fragment_ts = data->key_frame_pts;
}
LOG_DEBUG("Terminating pipeline due to EOS");
g_main_loop_quit(data->main_loop);
}
void create_kinesis_video_frame(Frame *frame, const nanoseconds &pts, const nanoseconds &dts, FRAME_FLAGS flags,
void *data, size_t len) {
frame->flags = flags;
frame->decodingTs = static_cast<UINT64>(dts.count()) / DEFAULT_TIME_UNIT_IN_NANOS;
frame->presentationTs = static_cast<UINT64>(pts.count()) / DEFAULT_TIME_UNIT_IN_NANOS;
// set duration to 0 due to potential high spew from rtsp streams
frame->duration = 0;
frame->size = static_cast<UINT32>(len);
frame->frameData = reinterpret_cast<PBYTE>(data);
frame->trackId = DEFAULT_TRACK_ID;
}
bool put_frame(shared_ptr<KinesisVideoStream> kinesis_video_stream, void *data, size_t len, const nanoseconds &pts, const nanoseconds &dts, FRAME_FLAGS flags) {
Frame frame;
create_kinesis_video_frame(&frame, pts, dts, flags, data, len);
return kinesis_video_stream->putFrame(frame);
}
static GstFlowReturn on_new_sample(GstElement *sink, CustomData *data) {
GstBuffer *buffer;
bool isDroppable, isHeader, delta;
size_t buffer_size;
GstFlowReturn ret = GST_FLOW_OK;
STATUS curr_stream_status = data->stream_status.load();
GstSample *sample = nullptr;
GstMapInfo info;
if (STATUS_FAILED(curr_stream_status)) {
LOG_ERROR("Received stream error: " << curr_stream_status);
ret = GST_FLOW_ERROR;
goto CleanUp;
}
info.data = nullptr;
sample = gst_app_sink_pull_sample(GST_APP_SINK (sink));
// capture cpd at the first frame
if (!data->stream_started) {
data->stream_started = true;
GstCaps* gstcaps = (GstCaps*) gst_sample_get_caps(sample);
GstStructure * gststructforcaps = gst_caps_get_structure(gstcaps, 0);
const GValue *gstStreamFormat = gst_structure_get_value(gststructforcaps, "codec_data");
gchar *cpd = gst_value_serialize(gstStreamFormat);
data->kinesis_video_stream->start(std::string(cpd));
g_free(cpd);
}
buffer = gst_sample_get_buffer(sample);
isHeader = GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_HEADER);
isDroppable = GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_CORRUPTED) ||
GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_DECODE_ONLY) ||
(GST_BUFFER_FLAGS(buffer) == GST_BUFFER_FLAG_DISCONT) ||
(GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_DISCONT) && GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_DELTA_UNIT)) ||
// drop if buffer contains header only and has invalid timestamp
(isHeader && (!GST_BUFFER_PTS_IS_VALID(buffer) || !GST_BUFFER_DTS_IS_VALID(buffer)));
if (!isDroppable) {
delta = GST_BUFFER_FLAG_IS_SET(buffer, GST_BUFFER_FLAG_DELTA_UNIT);
FRAME_FLAGS kinesis_video_flags = delta ? FRAME_FLAG_NONE : FRAME_FLAG_KEY_FRAME;
// Always synthesize dts for file sources because file sources dont have meaningful dts.
// For some rtsp sources the dts is invalid, therefore synthesize.
if (data->streamSource == FILE_SOURCE || !GST_BUFFER_DTS_IS_VALID(buffer)) {
data->synthetic_dts += DEFAULT_FRAME_DURATION_MS * HUNDREDS_OF_NANOS_IN_A_MILLISECOND * DEFAULT_TIME_UNIT_IN_NANOS;
buffer->dts = data->synthetic_dts;
} else if (GST_BUFFER_DTS_IS_VALID(buffer)) {
data->synthetic_dts = buffer->dts;
}
if (data->streamSource == FILE_SOURCE) {
data->max_frame_pts = MAX(data->max_frame_pts, buffer->pts);
// make sure the timestamp is continuous across multiple files.
buffer->pts += data->base_pts + data->producer_start_time;
if (CHECK_FRAME_FLAG_KEY_FRAME(kinesis_video_flags)) {
data->key_frame_pts = buffer->pts;
}
} else if (data->use_absolute_fragment_times) {
if (data->first_pts == GST_CLOCK_TIME_NONE) {
data->first_pts = buffer->pts;
}
buffer->pts += data->producer_start_time - data->first_pts;
}
if (!gst_buffer_map(buffer, &info, GST_MAP_READ)){
goto CleanUp;
}
put_frame(data->kinesis_video_stream, info.data, info.size, std::chrono::nanoseconds(buffer->pts),
std::chrono::nanoseconds(buffer->dts), kinesis_video_flags);
}
CleanUp:
if (info.data != nullptr) {
gst_buffer_unmap(buffer, &info);
}
if (sample != nullptr) {
gst_sample_unref(sample);
}
return ret;
}
static bool format_supported_by_source(GstCaps *src_caps, GstCaps *query_caps, int width, int height, int framerate) {
gst_caps_set_simple(query_caps,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", GST_TYPE_FRACTION, framerate, 1,
NULL);
bool is_match = gst_caps_can_intersect(query_caps, src_caps);
// in case the camera has fps as 10000000/333333
if(!is_match) {
gst_caps_set_simple(query_caps,
"framerate", GST_TYPE_FRACTION_RANGE, framerate, 1, framerate+1, 1,
NULL);
is_match = gst_caps_can_intersect(query_caps, src_caps);
}
return is_match;
}
static bool resolution_supported(GstCaps *src_caps, GstCaps *query_caps_raw, GstCaps *query_caps_h264,
CustomData &data, int width, int height, int framerate) {
if (query_caps_h264 && format_supported_by_source(src_caps, query_caps_h264, width, height, framerate)) {
data.h264_stream_supported = true;
} else if (query_caps_raw && format_supported_by_source(src_caps, query_caps_raw, width, height, framerate)) {
data.h264_stream_supported = false;
} else {
return false;
}
return true;
}
/* This function is called when an error message is posted on the bus */
static void error_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
GError *err;
gchar *debug_info;
/* Print error details on the screen */
gst_message_parse_error(msg, &err, &debug_info);
g_printerr("Error received from element %s: %s\n", GST_OBJECT_NAME (msg->src), err->message);
g_printerr("Debugging information: %s\n", debug_info ? debug_info : "none");
g_clear_error(&err);
g_free(debug_info);
g_main_loop_quit(data->main_loop);
}
void kinesis_video_init(CustomData *data) {
unique_ptr<DeviceInfoProvider> device_info_provider(new SampleDeviceInfoProvider());
unique_ptr<ClientCallbackProvider> client_callback_provider(new SampleClientCallbackProvider());
unique_ptr<StreamCallbackProvider> stream_callback_provider(new SampleStreamCallbackProvider(
reinterpret_cast<UINT64>(data)));
char const *accessKey;
char const *secretKey;
char const *sessionToken;
char const *defaultRegion;
string defaultRegionStr;
string sessionTokenStr;
char const *iot_get_credential_endpoint;
char const *cert_path;
char const *private_key_path;
char const *role_alias;
char const *ca_cert_path;
unique_ptr<CredentialProvider> credential_provider;
if (nullptr == (defaultRegion = getenv(DEFAULT_REGION_ENV_VAR))) {
defaultRegionStr = DEFAULT_AWS_REGION;
} else {
defaultRegionStr = string(defaultRegion);
}
LOG_INFO("Using region: " << defaultRegionStr);
if (nullptr != (accessKey = getenv(ACCESS_KEY_ENV_VAR)) &&
nullptr != (secretKey = getenv(SECRET_KEY_ENV_VAR))) {
LOG_INFO("Using aws credentials for Kinesis Video Streams");
if (nullptr != (sessionToken = getenv(SESSION_TOKEN_ENV_VAR))) {
LOG_INFO("Session token detected.");
sessionTokenStr = string(sessionToken);
} else {
LOG_INFO("No session token was detected.");
sessionTokenStr = "";
}
data->credential.reset(new Credentials(string(accessKey),
string(secretKey),
sessionTokenStr,
std::chrono::seconds(DEFAULT_CREDENTIAL_EXPIRATION_SECONDS)));
credential_provider.reset(new SampleCredentialProvider(*data->credential.get()));
} else if (nullptr != (iot_get_credential_endpoint = getenv("IOT_GET_CREDENTIAL_ENDPOINT")) &&
nullptr != (cert_path = getenv("CERT_PATH")) &&
nullptr != (private_key_path = getenv("PRIVATE_KEY_PATH")) &&
nullptr != (role_alias = getenv("ROLE_ALIAS")) &&
nullptr != (ca_cert_path = getenv("CA_CERT_PATH"))) {
LOG_INFO("Using IoT credentials for Kinesis Video Streams");
credential_provider.reset(new IotCertCredentialProvider(iot_get_credential_endpoint,
cert_path,
private_key_path,
role_alias,
ca_cert_path,
data->stream_name));
} else {
LOG_AND_THROW("No valid credential method was found");
}
data->kinesis_video_producer = KinesisVideoProducer::createSync(std::move(device_info_provider),
std::move(client_callback_provider),
std::move(stream_callback_provider),
std::move(credential_provider),
API_CALL_CACHE_TYPE_ALL,
defaultRegionStr);
LOG_DEBUG("Client is ready");
}
void kinesis_video_stream_init(CustomData *data) {
/* create a test stream */
map<string, string> tags;
char tag_name[MAX_TAG_NAME_LEN];
char tag_val[MAX_TAG_VALUE_LEN];
SNPRINTF(tag_name, MAX_TAG_NAME_LEN, "piTag");
SNPRINTF(tag_val, MAX_TAG_VALUE_LEN, "piValue");
STREAMING_TYPE streaming_type = DEFAULT_STREAMING_TYPE;
data->use_absolute_fragment_times = DEFAULT_ABSOLUTE_FRAGMENT_TIMES;
if (data->streamSource == FILE_SOURCE) {
streaming_type = STREAMING_TYPE_OFFLINE;
data->use_absolute_fragment_times = true;
}
unique_ptr<StreamDefinition> stream_definition(new StreamDefinition(
data->stream_name,
hours(DEFAULT_RETENTION_PERIOD_HOURS),
&tags,
DEFAULT_KMS_KEY_ID,
streaming_type,
DEFAULT_CONTENT_TYPE,
duration_cast<milliseconds> (seconds(DEFAULT_MAX_LATENCY_SECONDS)),
milliseconds(DEFAULT_FRAGMENT_DURATION_MILLISECONDS),
milliseconds(DEFAULT_TIMECODE_SCALE_MILLISECONDS),
DEFAULT_KEY_FRAME_FRAGMENTATION,
DEFAULT_FRAME_TIMECODES,
data->use_absolute_fragment_times,
DEFAULT_FRAGMENT_ACKS,
DEFAULT_RESTART_ON_ERROR,
DEFAULT_RECALCULATE_METRICS,
true,
0,
DEFAULT_STREAM_FRAMERATE,
DEFAULT_AVG_BANDWIDTH_BPS,
seconds(DEFAULT_BUFFER_DURATION_SECONDS),
seconds(DEFAULT_REPLAY_DURATION_SECONDS),
seconds(DEFAULT_CONNECTION_STALENESS_SECONDS),
DEFAULT_CODEC_ID,
DEFAULT_TRACKNAME,
nullptr,
0));
data->kinesis_video_stream = data->kinesis_video_producer->createStreamSync(std::move(stream_definition));
// reset state
data->stream_status = STATUS_SUCCESS;
data->stream_started = false;
// since we are starting new putMedia, timestamp need not be padded.
if (data->streamSource == FILE_SOURCE) {
data->base_pts = 0;
data->max_frame_pts = 0;
}
LOG_DEBUG("Stream is ready");
}
/* callback when each RTSP stream has been created */
static void pad_added_cb(GstElement *element, GstPad *pad, GstElement *target) {
GstPad *target_sink = gst_element_get_static_pad(GST_ELEMENT(target), "sink");
GstPadLinkReturn link_ret;
gchar *pad_name = gst_pad_get_name(pad);
g_print("New pad found: %s\n", pad_name);
link_ret = gst_pad_link(pad, target_sink);
if (link_ret == GST_PAD_LINK_OK) {
LOG_INFO("Pad link successful");
} else {
LOG_INFO("Pad link failed");
}
gst_object_unref(target_sink);
g_free(pad_name);
}
int gstreamer_live_source_init(int argc, char* argv[], CustomData *data, GstElement *pipeline) {
bool vtenc = false, isOnRpi = false;
/* init stream format */
int width = 0, height = 0, framerate = 25, bitrateInKBPS = 512;
// index 1 is stream name which is already processed
for (int i = 2; i < argc; i++) {
if (i < argc) {
if ((0 == STRCMPI(argv[i], "-w")) ||
(0 == STRCMPI(argv[i], "/w")) ||
(0 == STRCMPI(argv[i], "--w"))) {
// process the width
if (STATUS_FAILED(STRTOI32(argv[i + 1], NULL, 10, &width))) {
return 1;
}
}
else if ((0 == STRCMPI(argv[i], "-h")) ||
(0 == STRCMPI(argv[i], "/h")) ||
(0 == STRCMPI(argv[i], "--h"))) {
// process the width
if (STATUS_FAILED(STRTOI32(argv[i + 1], NULL, 10, &height))) {
return 1;
}
}
else if ((0 == STRCMPI(argv[i], "-f")) ||
(0 == STRCMPI(argv[i], "/f")) ||
(0 == STRCMPI(argv[i], "--f"))) {
// process the width
if (STATUS_FAILED(STRTOI32(argv[i + 1], NULL, 10, &framerate))) {
return 1;
}
}
else if ((0 == STRCMPI(argv[i], "-b")) ||
(0 == STRCMPI(argv[i], "/b")) ||
(0 == STRCMPI(argv[i], "--b"))) {
// process the width
if (STATUS_FAILED(STRTOI32(argv[i + 1], NULL, 10, &bitrateInKBPS))) {
return 1;
}
}
// skip the index
i++;
}
else if (0 == STRCMPI(argv[i], "-?") ||
0 == STRCMPI(argv[i], "--?") ||
0 == STRCMPI(argv[i], "--help")) {
g_printerr("Invalid arguments\n");
return 1;
}
else if (argv[i][0] == '/' ||
argv[i][0] == '-') {
// Unknown option
g_printerr("Invalid arguments\n");
return 1;
}
}
if ((width == 0 && height != 0) || (width != 0 && height == 0)) {
g_printerr("Invalid resolution\n");
return 1;
}
LOG_DEBUG("Streaming with live source and width: " << width << ", height: " << height << ", fps: " << framerate << ", bitrateInKBPS" << bitrateInKBPS);
GstElement *source_filter, *filter, *appsink, *h264parse, *encoder, *source, *video_convert;
/* create the elemnents */
/*
gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=I420,width=1280,height=720,framerate=15/1 ! x264enc pass=quant bframes=0 ! video/x-h264,profile=baseline,format=I420,width=1280,height=720,framerate=15/1 ! matroskamux ! filesink location=test.mkv
*/
source_filter = gst_element_factory_make("capsfilter", "source_filter");
filter = gst_element_factory_make("capsfilter", "encoder_filter");
appsink = gst_element_factory_make("appsink", "appsink");
h264parse = gst_element_factory_make("h264parse", "h264parse"); // needed to enforce avc stream format
// Attempt to create vtenc encoder
encoder = gst_element_factory_make("vtenc_h264_hw", "encoder");
if (encoder) {
source = gst_element_factory_make("autovideosrc", "source");
vtenc = true;
} else {
// Failed creating vtenc - check pi hardware encoder
encoder = gst_element_factory_make("omxh264enc", "encoder");
if (encoder) {
isOnRpi = true;
} else {
// - attempt x264enc
encoder = gst_element_factory_make("x264enc", "encoder");
isOnRpi = false;
}
source = gst_element_factory_make("v4l2src", "source");
if (!source) {
source = gst_element_factory_make("ksvideosrc", "source");
}
vtenc = false;
}
if (!pipeline || !source || !source_filter || !encoder || !filter || !appsink || !h264parse) {
g_printerr("Not all elements could be created.\n");
return 1;
}
/* configure source */
if (!vtenc) {
g_object_set(G_OBJECT (source), "do-timestamp", TRUE, "device", "/dev/video0", NULL);
}
/* Determine whether device supports h264 encoding and select a streaming resolution supported by the device*/
if (GST_STATE_CHANGE_FAILURE == gst_element_set_state(source, GST_STATE_READY)) {
g_printerr("Unable to set the source to ready state.\n");
return 1;
}
GstPad *srcpad = gst_element_get_static_pad(source, "src");
GstCaps *src_caps = gst_pad_query_caps(srcpad, NULL);
gst_element_set_state(source, GST_STATE_NULL);
GstCaps *query_caps_raw = gst_caps_new_simple("video/x-raw",
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
NULL);
GstCaps *query_caps_h264 = gst_caps_new_simple("video/x-h264",
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
NULL);
if (width != 0 && height != 0) {
if (!resolution_supported(src_caps, query_caps_raw, query_caps_h264, *data, width, height, framerate)) {
g_printerr("Resolution %dx%d not supported by video source\n", width, height);
return 1;
}
} else {
vector<int> res_width = {640, 1280, 1920};
vector<int> res_height = {480, 720, 1080};
vector<int> fps = {30, 25, 20};
bool found_resolution = false;
for (int i = 0; i < res_width.size(); i++) {
width = res_width[i];
height = res_height[i];
for (int j = 0; j < fps.size(); j++) {
framerate = fps[j];
if (resolution_supported(src_caps, query_caps_raw, query_caps_h264, *data, width, height, framerate)) {
found_resolution = true;
break;
}
}
if (found_resolution) {
break;
}
}
if (!found_resolution) {
g_printerr("Default list of resolutions (1920x1080, 1280x720, 640x480) are not supported by video source\n");
return 1;
}
}
gst_caps_unref(src_caps);
gst_object_unref(srcpad);
/* create the elemnents needed for the corresponding pipeline */
if (!data->h264_stream_supported) {
video_convert = gst_element_factory_make("videoconvert", "video_convert");
if (!video_convert) {
g_printerr("Not all elements could be created.\n");
return 1;
}
}
/* source filter */
if (!data->h264_stream_supported) {
gst_caps_set_simple(query_caps_raw,
"format", G_TYPE_STRING, "I420",
NULL);
g_object_set(G_OBJECT (source_filter), "caps", query_caps_raw, NULL);
} else {
gst_caps_set_simple(query_caps_h264,
"stream-format", G_TYPE_STRING, "byte-stream",
"alignment", G_TYPE_STRING, "au",
NULL);
g_object_set(G_OBJECT (source_filter), "caps", query_caps_h264, NULL);
}
gst_caps_unref(query_caps_h264);
gst_caps_unref(query_caps_raw);
/* configure encoder */
if (!data->h264_stream_supported){
if (vtenc) {
g_object_set(G_OBJECT (encoder), "allow-frame-reordering", FALSE, "realtime", TRUE, "max-keyframe-interval",
45, "bitrate", bitrateInKBPS, NULL);
} else if (isOnRpi) {
g_object_set(G_OBJECT (encoder), "control-rate", 2, "target-bitrate", bitrateInKBPS*1000,
"periodicty-idr", 45, "inline-header", FALSE, NULL);
} else {
g_object_set(G_OBJECT (encoder), "bframes", 0, "key-int-max", 45, "bitrate", bitrateInKBPS, NULL);
}
}
/* configure filter */
GstCaps *h264_caps = gst_caps_new_simple("video/x-h264",
"stream-format", G_TYPE_STRING, "avc",
"alignment", G_TYPE_STRING, "au",
NULL);
if (!data->h264_stream_supported) {
gst_caps_set_simple(h264_caps, "profile", G_TYPE_STRING, "baseline",
NULL);
}
g_object_set(G_OBJECT (filter), "caps", h264_caps, NULL);
gst_caps_unref(h264_caps);
/* configure appsink */
g_object_set(G_OBJECT (appsink), "emit-signals", TRUE, "sync", FALSE, NULL);
g_signal_connect(appsink, "new-sample", G_CALLBACK(on_new_sample), data);
/* build the pipeline */
if (!data->h264_stream_supported) {
gst_bin_add_many(GST_BIN (pipeline), source, video_convert, source_filter, encoder, h264parse, filter,
appsink, NULL);
if (!gst_element_link_many(source, video_convert, source_filter, encoder, h264parse, filter, appsink, NULL)) {
g_printerr("Elements could not be linked.\n");
gst_object_unref(pipeline);
return 1;
}
} else {
gst_bin_add_many(GST_BIN (pipeline), source, source_filter, h264parse, filter, appsink, NULL);
if (!gst_element_link_many(source, source_filter, h264parse, filter, appsink, NULL)) {
g_printerr("Elements could not be linked.\n");
gst_object_unref(pipeline);
return 1;
}
}
return 0;
}
int gstreamer_rtsp_source_init(CustomData *data, GstElement *pipeline) {
GstElement *filter, *appsink, *depay, *source, *h264parse;
filter = gst_element_factory_make("capsfilter", "filter");
appsink = gst_element_factory_make("appsink", "appsink");
depay = gst_element_factory_make("rtph264depay", "depay");
source = gst_element_factory_make("rtspsrc", "source");
h264parse = gst_element_factory_make("h264parse", "h264parse");
if (!pipeline || !source || !depay || !appsink || !filter || !h264parse) {
g_printerr("Not all elements could be created.\n");
return 1;
}
// configure filter
GstCaps *h264_caps = gst_caps_new_simple("video/x-h264",
"stream-format", G_TYPE_STRING, "avc",
"alignment", G_TYPE_STRING, "au",
NULL);
g_object_set(G_OBJECT (filter), "caps", h264_caps, NULL);
gst_caps_unref(h264_caps);
// configure appsink
g_object_set(G_OBJECT (appsink), "emit-signals", TRUE, "sync", FALSE, NULL);
g_signal_connect(appsink, "new-sample", G_CALLBACK(on_new_sample), data);
// configure rtspsrc
g_object_set(G_OBJECT (source),
"location", data->rtsp_url.c_str(),
"short-header", true, // Necessary for target camera
NULL);
g_signal_connect(source, "pad-added", G_CALLBACK(pad_added_cb), depay);
/* build the pipeline */
gst_bin_add_many(GST_BIN (pipeline), source,
depay, h264parse, filter, appsink,
NULL);
/* Leave the actual source out - this will be done when the pad is added */
if (!gst_element_link_many(depay, filter, h264parse,
appsink,
NULL)) {
g_printerr("Elements could not be linked.\n");
gst_object_unref(pipeline);
return 1;
}
return 0;
}
int gstreamer_file_source_init(CustomData *data, GstElement *pipeline) {
GstElement *demux, *appsink, *filesrc, *h264parse, *filter, *queue;
string file_suffix;
string file_path = data->file_list.at(data->current_file_idx).path;
filter = gst_element_factory_make("capsfilter", "filter");
appsink = gst_element_factory_make("appsink", "appsink");
filesrc = gst_element_factory_make("filesrc", "filesrc");
h264parse = gst_element_factory_make("h264parse", "h264parse");
queue = gst_element_factory_make("queue", "queue");
file_suffix = file_path.substr(file_path.size() - 3);
if (file_suffix.compare("mkv") == 0) {
demux = gst_element_factory_make("matroskademux", "demux");
} else if (file_suffix.compare("mp4") == 0) {
demux = gst_element_factory_make("qtdemux", "demux");
} else if (file_suffix.compare(".ts") == 0) {
demux = gst_element_factory_make("tsdemux", "demux");
} else {
LOG_ERROR("File format not supported. Supported ones are mp4, mkv and ts. File suffix: " << file_suffix);
return 1;
}
if (!demux || !filesrc || !h264parse || !appsink || !pipeline || !filter) {
g_printerr("Not all elements could be created:\n");
return 1;
}
// configure filter
GstCaps *h264_caps = gst_caps_new_simple("video/x-h264",
"stream-format", G_TYPE_STRING, "avc",
"alignment", G_TYPE_STRING, "au",
NULL);
g_object_set(G_OBJECT (filter), "caps", h264_caps, NULL);
gst_caps_unref(h264_caps);
// configure appsink
g_object_set(G_OBJECT (appsink), "emit-signals", TRUE, "sync", FALSE, NULL);
g_signal_connect(appsink, "new-sample", G_CALLBACK(on_new_sample), data);
g_signal_connect(appsink, "eos", G_CALLBACK(eos_cb), data);
// configure filesrc
g_object_set(G_OBJECT (filesrc), "location", file_path.c_str(), NULL);
// configure demux
g_signal_connect(demux, "pad-added", G_CALLBACK(pad_added_cb), queue);
/* build the pipeline */
gst_bin_add_many(GST_BIN (pipeline), demux,
filesrc, filter, appsink, h264parse, queue,
NULL);
if (!gst_element_link_many(filesrc, demux,
NULL)) {
g_printerr("Elements could not be linked.\n");
gst_object_unref(pipeline);
return 1;
}
if (!gst_element_link_many(queue, h264parse, filter, appsink,
NULL)) {
g_printerr("Video elements could not be linked.\n");
gst_object_unref(pipeline);
return 1;
}
return 0;
}
int gstreamer_init(int argc, char* argv[], CustomData *data) {
/* init GStreamer */
gst_init(&argc, &argv);
GstElement *pipeline;
int ret;
GstStateChangeReturn gst_ret;
// Reset first frame pts
data->first_pts = GST_CLOCK_TIME_NONE;
switch (data->streamSource) {
case LIVE_SOURCE:
LOG_INFO("Streaming from live source");
pipeline = gst_pipeline_new("live-kinesis-pipeline");
ret = gstreamer_live_source_init(argc, argv, data, pipeline);
break;
case RTSP_SOURCE:
LOG_INFO("Streaming from rtsp source");
pipeline = gst_pipeline_new("rtsp-kinesis-pipeline");