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MediaTimeline.cpp
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MediaTimeline.cpp
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/*
Copyright (c) 2023-2024 CodeWin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "MediaTimeline.h"
#include "MediaInfo.h"
#include <imgui_helper.h>
#include <imgui_extra_widget.h>
#include <imgui_fft.h>
#include <implot.h>
#include <cmath>
#include <sstream>
#include <iomanip>
#include <vector>
#include <utility>
#include <ThreadUtils.h>
#include <MatUtilsImVecHelper.h>
#include "EventStackFilter.h"
#include "TextureManager.h"
#include "MatUtils.h"
#include "Logger.h"
#include "DebugHelper.h"
const MediaTimeline::audio_band_config DEFAULT_BAND_CFG[10] = {
{ 32, 32, 0 }, { 64, 64, 0 },
{ 125, 125, 0 }, { 250, 250, 0 },
{ 500, 500, 0 }, { 1000, 1000, 0 },
{ 2000, 2000, 0 }, { 4000, 4000, 0 },
{ 8000, 8000, 0 }, { 16000, 16000, 0 },
};
static bool TimelineButton(ImDrawList *draw_list, const char * label, ImVec2 pos, ImVec2 size, std::string tooltips = "", ImVec4 hover_color = ImVec4(0.5f, 0.5f, 0.75f, 1.0f))
{
ImGuiIO &io = ImGui::GetIO();
ImRect rect(pos, pos + size);
bool overButton = rect.Contains(io.MousePos);
if (overButton)
draw_list->AddRectFilled(rect.Min, rect.Max, ImGui::GetColorU32(hover_color), 2);
ImVec4 color = ImVec4(1.f, 1.f, 1.f, 1.f);
ImGui::SetWindowFontScale(0.75);
draw_list->AddText(pos, ImGui::GetColorU32(color), label);
ImGui::SetWindowFontScale(1.0);
if (overButton && !tooltips.empty() && ImGui::BeginTooltip())
{
ImGui::TextUnformatted(tooltips.c_str());
ImGui::EndTooltip();
}
return overButton;
}
static int64_t alignTime(int64_t time, const MediaCore::Ratio& rate, bool useCeil = false)
{
if (rate.den && rate.num)
{
const float frame_index_f = (double)time * rate.num / ((double)rate.den * 1000.0);
const int64_t frame_index = useCeil ? (int64_t)ceil(frame_index_f) : (int64_t)floor(frame_index_f);
time = round((double)frame_index * 1000 * rate.den / rate.num);
}
return time;
}
static int64_t frameTime(MediaCore::Ratio rate)
{
if (rate.den && rate.num)
return rate.den * 1000 / rate.num;
else
return 0;
}
static void frameStepTime(int64_t& time, int32_t offset, MediaCore::Ratio rate)
{
if (rate.den && rate.num)
{
int64_t frame_index = (int64_t)floor((double)time * (double)rate.num / (double)rate.den / 1000.0 + 0.5);
frame_index += offset;
time = frame_index * 1000 * rate.den / rate.num;
}
}
static bool waveFrameResample(float * wave, int samples, int size, int start_offset, int size_max, int zoom, ImGui::ImMat& plot_frame_max, ImGui::ImMat& plot_frame_min)
{
bool min_max = samples > 16;
plot_frame_max.create_type(size, 1, 1, IM_DT_FLOAT32);
plot_frame_min.create_type(size, 1, 1, IM_DT_FLOAT32);
float * out_channel_data_max = (float *)plot_frame_max.data;
float * out_channel_data_min = (float *)plot_frame_min.data;
for (int i = 0; i < size; i++)
{
float max_val = -FLT_MAX;
float min_val = FLT_MAX;
if (!min_max)
{
if (i * samples + start_offset < size_max)
min_val = max_val = wave[i * samples + start_offset];
}
else
{
for (int n = 0; n < samples; n += zoom)
{
if (i * samples + n + start_offset >= size_max)
break;
float val = wave[i * samples + n + start_offset];
if (max_val < val) max_val = val;
if (min_val > val) min_val = val;
}
if (max_val < 0 && min_val < 0)
{
max_val = min_val;
}
else if (max_val > 0 && min_val > 0)
{
min_val = max_val;
}
}
out_channel_data_max[i] = ImMin(max_val, 1.f);
out_channel_data_min[i] = ImMax(min_val, -1.f);
}
return min_max;
}
static void waveformToMat(const MediaCore::Overview::Waveform::Holder wavefrom, ImGui::ImMat& mat, ImVec2 wave_size)
{
int channels = wavefrom->pcm.size();
if (channels > 2) channels = 2;
int channel_height = wave_size.y / channels;
ImVec2 channel_size(wave_size.x, channel_height);
float wave_range = fmax(fabs(wavefrom->minSample), fabs(wavefrom->maxSample));
mat.create(wave_size.x, wave_size.y, 4, (size_t)1, 4);
ImGui::PushStyleColor(ImGuiCol_PlotLines, ImVec4(0.f, 1.f, 0.f, 1.0f));
ImGui::PushStyleColor(ImGuiCol_PlotHistogram, ImVec4(0.f, 1.f, 0.f, 0.75f));
for (int i = 0; i < channels; i++)
{
ImGui::PlotMat(mat, ImVec2(0, channel_height * i), &wavefrom->pcm[i][0], wavefrom->pcm[i].size(), 0, -wave_range / 2, wave_range / 2, channel_size, sizeof(float), true, true);
}
ImGui::PopStyleColor(2);
}
namespace MediaTimeline
{
/***********************************************************************************************************
* ID Generator Member Functions
***********************************************************************************************************/
int64_t IDGenerator::GenerateID()
{
return m_State ++;
}
void IDGenerator::SetState(int64_t state)
{
m_State = state;
}
int64_t IDGenerator::State() const
{
return m_State;
}
} // namespace MediaTimeline
namespace MediaTimeline
{
/***********************************************************************************************************
* MediaItem Struct Member Functions
***********************************************************************************************************/
MediaItem::MediaItem(const std::string& name, const std::string& path, uint32_t type, void* handle)
: mName(name), mPath(path), mMediaType(type), mHandle(handle)
{
TimeLine* timeline = (TimeLine*)handle;
mID = timeline ? timeline->m_IDGenerator.GenerateID() : ImGui::get_current_time_usec();
mTxMgr = timeline->mTxMgr;
}
MediaItem::MediaItem(MediaCore::MediaParser::Holder hParser, void* handle)
: mHandle(handle), mhParser(hParser)
{
TimeLine* timeline = (TimeLine*)handle;
mID = timeline ? timeline->m_IDGenerator.GenerateID() : ImGui::get_current_time_usec();
auto pVidstm = hParser->HasVideo() ? hParser->GetBestVideoStream() : nullptr;
mMediaType = hParser->HasVideo() ? (hParser->IsImageSequence() ? MEDIA_SUBTYPE_VIDEO_IMAGE_SEQUENCE
: (pVidstm->isImage ? MEDIA_SUBTYPE_VIDEO_IMAGE : MEDIA_VIDEO))
: (hParser->HasAudio() ? MEDIA_AUDIO : MEDIA_UNKNOWN);
mTxMgr = timeline->mTxMgr;
mPath = hParser->GetUrl();
mName = ImGuiHelper::path_filename(mPath);
}
MediaItem::~MediaItem()
{
for (auto texture : mWaveformTextures) ImGui::ImDestroyTexture(&texture);
mWaveformTextures.clear();
mMediaOverview = nullptr;
mMediaThumbnail.clear();
}
bool MediaItem::ChangeSource(const std::string& name, const std::string& path)
{
ReleaseItem();
mName = name;
mPath = path;
return Initialize();
}
bool MediaItem::Initialize()
{
mValid = false;
if (mPath.empty() || !ImGuiHelper::file_exists(mPath))
return false;
TimeLine* timeline = (TimeLine*)mHandle;
if (IS_TEXT(mMediaType))
{
mValid = true;
}
else
{
if (!mhParser)
{
mhParser = MediaCore::MediaParser::CreateInstance();
if (IS_IMAGESEQ(mMediaType))
mhParser->OpenImageSequence({25000, 1000}, mPath, ".+_([[:digit:]]{1,})\\.png", false, true);
else
mhParser->Open(mPath);
if (!mhParser->IsOpened())
return false;
}
mMediaOverview = MediaCore::Overview::CreateInstance();
mMediaOverview->EnableHwAccel(timeline->mHardwareCodec);
RenderUtils::TextureManager::TexturePoolAttributes tTxPoolAttrs;
if (mTxMgr->GetTexturePoolAttributes(VIDEOITEM_OVERVIEW_GRID_TEXTURE_POOL_NAME, tTxPoolAttrs))
mMediaOverview->SetSnapshotSize(tTxPoolAttrs.tTxSize.x, tTxPoolAttrs.tTxSize.y);
else
mMediaOverview->SetSnapshotResizeFactor(0.05, 0.05);
if (!mMediaOverview->Open(mhParser, 64))
return false;
mSrcLength = mMediaOverview->GetMediaInfo()->duration * 1000;
mValid = true;
}
return true;
}
void MediaItem::ReleaseItem()
{
mMediaOverview = nullptr;
mMediaThumbnail.clear();
mSrcLength = 0;
mValid = false;
}
void MediaItem::UpdateThumbnail()
{
if (mMediaOverview && mMediaOverview->IsOpened())
{
auto count = mMediaOverview->GetSnapshotCount();
if (mMediaThumbnail.size() >= count)
return;
std::vector<ImGui::ImMat> snapshots;
if (mMediaOverview->GetSnapshots(snapshots))
{
for (int i = 0; i < snapshots.size(); i++)
{
if (i >= mMediaThumbnail.size() && !snapshots[i].empty())
{
auto hTx = mTxMgr->GetGridTextureFromPool(VIDEOITEM_OVERVIEW_GRID_TEXTURE_POOL_NAME);
if (hTx)
{
hTx->RenderMatToTexture(snapshots[i]);
mMediaThumbnail.push_back(hTx);
}
}
}
}
}
}
} //namespace MediaTimeline
namespace MediaTimeline
{
/***********************************************************************************************************
* Event track Struct Member Functions
***********************************************************************************************************/
EventTrack::EventTrack(int64_t id, void* handle)
{
TimeLine * timeline = (TimeLine *)handle;
mID = timeline ? timeline->m_IDGenerator.GenerateID() : ImGui::get_current_time_usec();
mClipID = id;
mHandle = handle;
}
EventTrack* EventTrack::Load(const imgui_json::value& value, void * handle)
{
Clip * clip = (Clip *)handle;
int64_t clip_id = -1;
if (value.contains("ClipID"))
{
auto& val = value["ClipID"];
if (val.is_number()) clip_id = val.get<imgui_json::number>();
}
EventTrack * new_track = new EventTrack(clip_id, clip->mHandle);
if (new_track)
{
if (value.contains("ID"))
{
auto& val = value["ID"];
if (val.is_number()) new_track->mID = val.get<imgui_json::number>();
}
if (value.contains("Expanded"))
{
auto& val = value["Expanded"];
if (val.is_boolean()) new_track->mExpanded = val.get<imgui_json::boolean>();
}
// load and check event into track
const imgui_json::array* eventIDArray = nullptr;
if (imgui_json::GetPtrTo(value, "EventIDS", eventIDArray))
{
for (auto& id_val : *eventIDArray)
{
int64_t event_id = id_val.get<imgui_json::number>();
new_track->m_Events.push_back(event_id);
}
}
}
return new_track;
}
void EventTrack::Save(imgui_json::value& value)
{
value["ID"] = imgui_json::number(mID);
value["ClipID"] = imgui_json::number(mClipID);
value["Expanded"] = imgui_json::boolean(mExpanded);
// save event ids
imgui_json::value events;
for (auto event : m_Events)
{
imgui_json::value event_id_value = imgui_json::number(event);
events.push_back(event_id_value);
}
if (m_Events.size() > 0) value["EventIDS"] = events;
}
bool EventTrack::DrawContent(ImDrawList *draw_list, ImRect rect, int event_height, int curve_height, int64_t view_start, int64_t view_end, float pixelWidthMS, bool editable, bool& changed)
{
bool mouse_hold = false;
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline)
return mouse_hold;
auto clip = timeline->FindClipByID(mClipID);
if (!clip || !clip->mEventStack)
return mouse_hold;
ImGui::PushClipRect(rect.Min, rect.Max, true);
ImGui::SetCursorScreenPos(rect.Min);
bool mouse_clicked = false;
bool curve_hovered = false;
// draw events
for (auto event_id : m_Events)
{
bool draw_event = false;
int64_t curve_start = 0;
int64_t curve_end = 0;
float cursor_start = 0;
float cursor_end = 0;
ImDrawFlags flag = ImDrawFlags_RoundCornersNone;
auto event = clip->mEventStack->GetEvent(event_id);
if (!event) continue;
if (event->IsInRange(view_start) && event->End() <= view_end)
{
/***********************************************************
* ----------------------------------------
* XXXXXXXX|XXXXXXXXXXXXXXXXXXXXXX|
* ----------------------------------------
************************************************************/
cursor_start = rect.Min.x;
cursor_end = rect.Min.x + (event->End() - view_start) * pixelWidthMS;
curve_start = view_start - event->Start();
curve_end = event->End() - event->Start();
draw_event = true;
flag |= ImDrawFlags_RoundCornersRight;
}
else if (event->Start() >= view_start && event->End() <= view_end)
{
/***********************************************************
* ----------------------------------------
* |XXXXXXXXXXXXXXXXXXXXXX|
* ----------------------------------------
************************************************************/
cursor_start = rect.Min.x + (event->Start() - view_start) * pixelWidthMS;
cursor_end = rect.Min.x + (event->End() - view_start) * pixelWidthMS;
curve_start = 0;
curve_end = event->End() - event->Start();
draw_event = true;
flag |= ImDrawFlags_RoundCornersAll;
}
else if (event->Start() >= view_start && event->IsInRange(view_end))
{
/***********************************************************
* ----------------------------------------
* |XXXXXXXXXXXXXXXXXXXXXX|XXXXXXXXX
* ----------------------------------------
************************************************************/
cursor_start = rect.Min.x + (event->Start() - view_start) * pixelWidthMS;
cursor_end = rect.Max.x;
curve_start = 0;
curve_end = view_end - event->Start();
draw_event = true;
flag |= ImDrawFlags_RoundCornersLeft;
}
else if (event->Start() <= view_start && event->End() >= view_end)
{
/***********************************************************
* ----------------------------------------
* XXXXXXX|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX|XXXXXXXX
* ----------------------------------------
************************************************************/
cursor_start = rect.Min.x;
cursor_end = rect.Max.x;
curve_start = view_start - event->Start();
curve_end = view_end - event->Start();
draw_event = true;
}
if (event->Start() == view_start)
flag |= ImDrawFlags_RoundCornersLeft;
if (event->End() == view_end)
flag |= ImDrawFlags_RoundCornersRight;
ImVec2 event_pos_min = ImVec2(cursor_start, rect.Min.y);
ImVec2 event_pos_max = ImVec2(cursor_end, rect.Min.y + event_height);
ImRect event_rect(event_pos_min, event_pos_max);
if (!event_rect.Overlaps(rect))
{
draw_event = false;
}
if (event_rect.GetWidth() < 1)
{
draw_event = false;
}
if (draw_event && cursor_end > cursor_start)
{
auto pBP = event->GetBp();
bool is_event_valid = pBP && pBP->Blueprint_IsExecutable();
bool is_select = event->Status() & EVENT_SELECTED;
bool is_hovered = event->Status() & EVENT_HOVERED;
if (is_select)
draw_list->AddRect(event_pos_min, event_pos_max, IM_COL32(0,255,0,224), 4, flag, 2.0f);
else
draw_list->AddRect(event_pos_min, event_pos_max, IM_COL32(128,128,255,224), 4, flag, 2.0f);
auto event_color = is_event_valid ? (is_hovered ? IM_COL32(64, 64, 192, 128) : IM_COL32(32, 32, 192, 128)) : IM_COL32(192, 32, 32, 128);
draw_list->AddRectFilled(event_pos_min, event_pos_max, event_color, 4, flag);
if (pBP)
{
auto nodes = pBP->m_Document->m_Blueprint.GetNodes();
ImGui::SetCursorScreenPos(event_pos_min);
draw_list->PushClipRect(event_pos_min, event_pos_max, true);
if (!nodes.empty() && event_pos_max.x - event_pos_min.x < 24)
{
auto center_point = ImVec2(event_pos_min.x + (event_pos_max.x - event_pos_min.x) / 2, event_pos_min.y + (event_pos_max.y - event_pos_min.y) / 2);
draw_list->AddCircleFilled(center_point, 4, IM_COL32_WHITE, 16);
}
else
{
int count = 0;
for (auto node : nodes)
{
if (!IS_ENTRY_EXIT_NODE(node->GetType()))
{
ImGui::SetCursorScreenPos(event_pos_min + ImVec2(16 * count, 0));
node->DrawNodeLogo(ImGui::GetCurrentContext(), ImVec2(24, 24));
count ++;
}
}
}
draw_list->PopClipRect();
}
if (is_hovered && editable)
{
if (!mouse_clicked && ImGui::IsMouseClicked(ImGuiMouseButton_Left) && !ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left))
{
SelectEvent(event, false);
mouse_clicked = true;
}
// TODO::Dicky event draw tooltips
//event->DrawTooltips();
}
}
if (mExpanded && draw_event)
{
ImVec2 curve_pos_min = event_pos_min + ImVec2(0, event_height);
ImVec2 curve_pos_max = event_pos_max + ImVec2(0, curve_height);
ImRect curve_rect(curve_pos_min, curve_pos_max);
curve_hovered |= curve_rect.Contains(ImGui::GetMousePos());
ImGui::SetCursorScreenPos(curve_pos_min);
ImGui::PushID(event_id);
if (ImGui::BeginChild("##event_curve", curve_rect.GetSize(), false, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings))
{
ImVec2 sub_window_pos = ImGui::GetCursorScreenPos();
ImVec2 sub_window_size = ImGui::GetWindowSize();
draw_list->AddRectFilled(sub_window_pos, sub_window_pos + sub_window_size, COL_BLACK_DARK);
bool _changed = false;
auto pKP = event->GetKeyPoint();
if (pKP)
{
float current_time = timeline->mCurrentTime - clip->Start();
const auto frameRate = timeline->mhMediaSettings->VideoOutFrameRate();
ImVec2 alignT = { (float)frameRate.num, (float)frameRate.den*1000 };
pKP->SetCurveAlign(alignT, ImGui::ImCurveEdit::DIM_T);
mouse_hold |= ImGui::ImCurveEdit::Edit( nullptr,
pKP,
sub_window_size,
ImGui::GetID("##video_filter_event_keypoint_editor"),
editable,
current_time,
curve_start,
curve_end,
CURVE_EDIT_FLAG_VALUE_LIMITED | CURVE_EDIT_FLAG_MOVE_CURVE | CURVE_EDIT_FLAG_KEEP_BEGIN_END | CURVE_EDIT_FLAG_DOCK_BEGIN_END,
nullptr, // clippingRect
&_changed
);
if (_changed) { timeline->RefreshPreview(); changed |= _changed; }
}
}
ImGui::EndChild();
ImGui::PopID();
}
}
if (m_Events.empty())
mExpanded = false;
else if (rect.Contains(ImGui::GetMousePos()) && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left) && !curve_hovered && editable)
mExpanded = !mExpanded;
ImGui::PopClipRect();
return mouse_hold;
}
void EventTrack::SelectEvent(MEC::Event::Holder event, bool appand)
{
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline || !event)
return;
auto clip = timeline->FindClipByID(mClipID);
if (!clip)
return;
bool selected = true;
bool is_selected = event->Status() & EVENT_SELECTED;
if (appand && is_selected)
{
selected = false;
}
if (clip->mEventStack)
{
auto event_list = clip->mEventStack->GetEventList();
for (auto _event : event_list)
{
if (_event->Id() != event->Id())
{
if (!appand)
{
_event->SetStatus(EVENT_SELECTED_BIT, selected ? 0 : 1);
if (selected) _event->SetStatus(EVENT_NEED_SCROLL, 0);
}
}
}
}
event->SetStatus(EVENT_SELECTED_BIT, selected ? 1 : 0);
if (selected)
{
clip->bAttributeScrolling = false;
event->SetStatus(EVENT_NEED_SCROLL, 1);
}
if (clip->mEventStack)
{
clip->mEventStack->SetEditingEvent(selected ? event->Id() : -1);
}
}
MEC::Event::Holder EventTrack::FindPreviousEvent(int64_t id)
{
MEC::Event::Holder found_event = nullptr;
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline) return found_event;
auto clip = timeline->FindClipByID(mClipID);
if (!clip) return found_event;
auto event = clip->FindEventByID(id);
if (!event) return found_event;
auto iter = std::find_if(m_Events.begin(), m_Events.end(), [id](const int64_t e) {
return e == id;
});
if (iter == m_Events.begin() || iter == m_Events.end())
return found_event;
found_event = clip->FindEventByID(*(iter - 1));
return found_event;
}
MEC::Event::Holder EventTrack::FindNextEvent(int64_t id)
{
MEC::Event::Holder found_event = nullptr;
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline) return found_event;
auto clip = timeline->FindClipByID(mClipID);
if (!clip) return found_event;
auto event = clip->FindEventByID(id);
if (!event) return found_event;
auto iter = std::find_if(m_Events.begin(), m_Events.end(), [id](const int64_t e) {
return e == id;
});
if (iter == m_Events.end() || iter == m_Events.end() - 1)
return found_event;
found_event = clip->FindEventByID(*(iter + 1));
return found_event;
}
int64_t EventTrack::FindEventSpace(int64_t time)
{
int64_t space = -1;
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline) return space;
auto clip = timeline->FindClipByID(mClipID);
if (!clip) return space;
for (auto event_id : m_Events)
{
auto event = clip->FindEventByID(event_id);
if (event && event->Start() >= time)
{
space = event->Start() - time;
break;
}
}
return space;
}
void EventTrack::Update()
{
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline) return;
auto clip = timeline->FindClipByID(mClipID);
if (!clip) return;
auto clip_track = timeline->FindTrackByClipID(clip->mID);
if (clip_track) timeline->RefreshTrackView({clip_track->mID});
// sort m_Events by start time
std::sort(m_Events.begin(), m_Events.end(), [clip](const int64_t a, const int64_t b) {
auto a_event = clip->FindEventByID(a);
auto b_event = clip->FindEventByID(b);
if (a_event && b_event)
return a_event->Start() < b_event->Start();
else
return false;
});
}
} //namespace MediaTimeline
namespace MediaTimeline
{
/***********************************************************************************************************
* Clip Struct Member Functions
***********************************************************************************************************/
Clip::Clip(TimeLine* pOwner, uint32_t u32Type) : mHandle(pOwner), mType(u32Type)
{
mID = pOwner ? pOwner->m_IDGenerator.GenerateID() : ImGui::get_current_time_usec();
}
Clip::Clip(TimeLine* pOwner, uint32_t u32Type, const std::string& strName, int64_t i64Start, int64_t i64End, int64_t i64StartOffset, int64_t i64EndOffset)
: mHandle(pOwner), mType(u32Type), mName(strName), mStart(i64Start), mEnd(i64End), mStartOffset(i64StartOffset), mEndOffset(i64EndOffset)
{
mID = pOwner ? pOwner->m_IDGenerator.GenerateID() : ImGui::get_current_time_usec();
}
Clip::~Clip()
{
}
bool Clip::LoadFromJson(const imgui_json::value& j)
{
std::string strAttrName;
strAttrName = "ID";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mID = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "Type";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mType = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "MediaID";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mMediaID = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "GroupID";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mGroupID = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::WARN) << "ABNORMAL json in 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found." << std::endl;
}
strAttrName = "Start";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mStart = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "End";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mEnd = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "StartOffset";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mStartOffset = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "EndOffset";
if (j.contains(strAttrName) && j[strAttrName].is_number())
mEndOffset = j[strAttrName].get<imgui_json::number>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
strAttrName = "Path";
if (j.contains(strAttrName) && j[strAttrName].is_string())
mPath = j[strAttrName].get<imgui_json::string>();
else
{
Logger::Log(Logger::WARN) << "ABNORMAL json in 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found." << std::endl;
}
strAttrName = "Name";
if (j.contains(strAttrName) && j[strAttrName].is_string())
mName = j[strAttrName].get<imgui_json::string>();
else
{
Logger::Log(Logger::Error) << "FAILED to perform 'Clip::LoadFromJson()'! No attribute '" << strAttrName << "' can be found. Clip json is:" << std::endl;
Logger::Log(Logger::Error) << j.dump() << std::endl << std::endl;
return false;
}
// load event tracks
strAttrName = "EventTracks";
if (j.contains(strAttrName) && j[strAttrName].is_array())
{
const auto& jnEventTracks = j[strAttrName].get<imgui_json::array>();
for (const auto& jnEvtTrack : jnEventTracks)
{
EventTrack* pEvtTrack = EventTrack::Load(jnEvtTrack, this);
if (pEvtTrack)
mEventTracks.push_back(pEvtTrack);
else
{
Logger::Log(Logger::WARN) << "FAILED to restore 'EventTrack' instance for 'Clip (id=" << mID << ", path=" << mPath <<", type=" << (int)mType
<< ")'! Event track json is:" << std::endl;
Logger::Log(Logger::WARN) << jnEvtTrack.dump() << std::endl << std::endl;
}
}
}
// save a copy of the json for this clip
mClipJson = j;
return true;
}
imgui_json::value Clip::SaveAsJson()
{
imgui_json::value j;
// save clip global info
j["ID"] = imgui_json::number(mID);
j["MediaID"] = imgui_json::number(mMediaID);
j["GroupID"] = imgui_json::number(mGroupID);
j["Type"] = imgui_json::number(mType);
j["Path"] = mPath;
j["Name"] = mName;
j["Start"] = imgui_json::number(mStart);
j["End"] = imgui_json::number(mEnd);
j["StartOffset"] = imgui_json::number(mStartOffset);
j["EndOffset"] = imgui_json::number(mEndOffset);
// jnClip["Selected"] = imgui_json::boolean(bSelected);
// save event track
imgui_json::array jnEvtTracks;
for (const auto pEvtTrack : mEventTracks)
{
imgui_json::value jnEvtTrack;
pEvtTrack->Save(jnEvtTrack);
jnEvtTracks.push_back(jnEvtTrack);
}
if (!jnEvtTracks.empty())
j["EventTracks"] = jnEvtTracks;
mClipJson = j;
return std::move(j);
}
int64_t Clip::Cropping(int64_t& diffTime, int type)
{
TimeLine * timeline = (TimeLine *)mHandle;
if (!timeline)
return 0;
auto track = timeline->FindTrackByClipID(mID);
if (!track || track->mLocked)
return 0;
if (IS_DUMMY(mType))
return 0;
int64_t diff = mDragAnchorTime != -1 ? diffTime - (type == 0 ? Start() : End()) + mDragAnchorTime : diffTime;
diff = timeline->AlignTime(diff);
if (diff == 0)
return 0;
int64_t length = Length();
int64_t old_offset = mStartOffset;
int64_t offset_time = 0;
// get all clip time march point
std::vector<int64_t> unselected_start_points;
std::vector<int64_t> unselected_end_points;
if (timeline->bMovingAttract)
{
for (auto clip : timeline->m_Clips)
{
// align clip end to timeline frame rate
int64_t _start = clip->mStart;
int64_t _end = clip->mEnd;
if (clip->mID != mID)
{
unselected_start_points.push_back(_start);
unselected_end_points.push_back(_end);
}
}
}
const auto frameRate = timeline->mhMediaSettings->VideoOutFrameRate();
int64_t frame_time = frameTime(frameRate) * 2; // 2 frames ?
int64_t attract_docking_gap = std::max((int64_t)(timeline->attract_docking_pixels / timeline->msPixelWidthTarget), frame_time);
int64_t min_gap = INT64_MAX;
timeline->mConnectedPoints = -1;
timeline->mConnectingPoints = -1;
timeline->mClipConnected = false;
if (type == 0)
{
// check start point
for (auto _point_start : unselected_start_points)
{
if (abs(mStart - _point_start) <= attract_docking_gap)
{
if (abs(min_gap) > abs(mStart - _point_start))
{
min_gap = mStart - _point_start;
timeline->mConnectingPoints = mStart;
timeline->mConnectedPoints = _point_start;
}
}
}
for (auto _point_end : unselected_end_points)
{
if (abs(mStart - _point_end) <= attract_docking_gap)
{
if (abs(min_gap) > abs(mStart - _point_end))
{
min_gap = mStart - _point_end;
timeline->mConnectingPoints = mStart;
timeline->mConnectedPoints = _point_end;
}
}
}
}
else
{
// check start point
for (auto _point_start : unselected_start_points)
{
if (abs(mEnd - _point_start) <= attract_docking_gap)
{
if (abs(min_gap) > abs(mEnd - _point_start))
{
min_gap = mEnd - _point_start;
timeline->mConnectingPoints = mEnd;
timeline->mConnectedPoints = _point_start;
}
}
}
for (auto _point_end : unselected_end_points)
{
if (abs(mEnd - _point_end) <= attract_docking_gap)
{
if (abs(min_gap) > abs(mEnd - _point_end))
{
min_gap = mEnd - _point_end;
timeline->mConnectingPoints = mEnd;
timeline->mConnectedPoints = _point_end;
}
}
}
}
if (timeline->mConnectedPoints != -1 && timeline->mConnectingPoints != -1 && min_gap != INT64_MAX)
{
auto dist = timeline->mConnectingPoints + diff - timeline->mConnectedPoints;
if (abs(dist) > abs(min_gap))
{
// leaving attracted point
if (abs(dist) < attract_docking_gap / timeline->disattract_docking_rate)
{
offset_time = -diff;
diff = 0;
timeline->mClipConnected = true;
}
}
else
if (abs(dist) <= abs(min_gap))
{
// closing attracted point
offset_time = -min_gap - diff;
diff = -min_gap;
timeline->mClipConnected = true;
}
else if (timeline->mConnectingPoints == timeline->mConnectedPoints)
{
// touch attracted point
if (abs(diff) < attract_docking_gap / timeline->disattract_docking_rate)
{
offset_time = -diff;
diff = 0;
timeline->mClipConnected = true;
}
}
}
// cropping start
if (type == 0)
{
// for clips that have length limitation
if ((IS_VIDEO(mType) && !IS_IMAGE(mType)) || IS_AUDIO(mType))
{
if (diff + mStartOffset < 0)
diff = -mStartOffset; // mStartOffset can NOT be NEGATIVE
int64_t newStart = mStart + diff;
if (newStart >= mEnd)
{
newStart = timeline->AlignTimeToPrevFrame(mEnd);
diff = newStart - mStart;
}
int64_t newStartOffset = mStartOffset + diff;
assert(newStartOffset >= 0);
int64_t newLength = length-diff;
assert(newLength > 0);
mStart = newStart;
mStartOffset = newStartOffset;
}
// for clips that have no length limitation
else
{
int64_t newStart = mStart + diff;
if (newStart >= mEnd)
{
newStart = timeline->AlignTimeToPrevFrame(mEnd);
diff = newStart - mStart;
}
int64_t newLength = length-diff;
assert(newLength > 0);