157 lines
4.2 KiB
C++
157 lines
4.2 KiB
C++
// Copyright (c) 2006, Rodrigo Braz Monteiro
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of the Aegisub Group nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// AEGISUB
|
|
//
|
|
// Website: http://aegisub.cellosoft.com
|
|
// Contact: mailto:zeratul@cellosoft.com
|
|
//
|
|
|
|
|
|
///////////
|
|
// Headers
|
|
#include "video_provider.h"
|
|
#include "options.h"
|
|
#include "setup.h"
|
|
#include "vfr.h"
|
|
|
|
|
|
///////////////
|
|
// Constructor
|
|
VideoProvider::VideoProvider() {
|
|
cacheMax = 0;
|
|
}
|
|
|
|
|
|
//////////////
|
|
// Destructor
|
|
VideoProvider::~VideoProvider() {
|
|
ClearCache();
|
|
}
|
|
|
|
|
|
/////////////
|
|
// Get frame
|
|
const AegiVideoFrame VideoProvider::GetFrame(int n) {
|
|
// See if frame is cached
|
|
CachedFrame cached;
|
|
for (std::list<CachedFrame>::iterator cur=cache.begin();cur!=cache.end();cur++) {
|
|
cached = *cur;
|
|
if (cached.n == n) {
|
|
cache.erase(cur);
|
|
cache.push_back(cached);
|
|
return cached.frame;
|
|
}
|
|
}
|
|
|
|
// Not cached, retrieve it
|
|
const AegiVideoFrame frame = DoGetFrame(n);
|
|
Cache(n,frame);
|
|
return frame;
|
|
}
|
|
|
|
|
|
////////////////
|
|
// Get as float
|
|
void VideoProvider::GetFloatFrame(float* buffer, int n) {
|
|
const AegiVideoFrame frame = GetFrame(n);
|
|
frame.GetFloat(buffer);
|
|
}
|
|
|
|
|
|
//////////////////////////
|
|
// Set maximum cache size
|
|
void VideoProvider::SetCacheMax(int n) {
|
|
if (n < 0) n = 0;
|
|
cacheMax = n;
|
|
}
|
|
|
|
|
|
////////////////
|
|
// Add to cache
|
|
void VideoProvider::Cache(int n,const AegiVideoFrame frame) {
|
|
// Cache enabled?
|
|
if (cacheMax == 0) return;
|
|
|
|
// Cache full, remove use frame at front
|
|
if (cache.size() >= cacheMax) {
|
|
cache.push_back(cache.front());
|
|
cache.pop_front();
|
|
}
|
|
|
|
// Cache not full, insert new one
|
|
else {
|
|
cache.push_back(CachedFrame());
|
|
}
|
|
|
|
// Cache
|
|
cache.front().n = n;
|
|
cache.front().frame.CopyFrom(frame);
|
|
}
|
|
|
|
|
|
///////////////
|
|
// Clear cache
|
|
void VideoProvider::ClearCache() {
|
|
while (cache.size()) {
|
|
cache.front().frame.Clear();
|
|
cache.pop_front();
|
|
}
|
|
}
|
|
|
|
|
|
////////////////
|
|
// Get provider
|
|
VideoProvider *VideoProviderFactory::GetProvider(wxString video,double fps) {
|
|
// List of providers
|
|
wxArrayString list = GetFactoryList(Options.AsText(_T("Video provider")));
|
|
|
|
// None available
|
|
if (list.Count() == 0) throw _T("No video providers are available.");
|
|
|
|
// Get provider
|
|
wxString error;
|
|
for (unsigned int i=0;i<list.Count();i++) {
|
|
try {
|
|
VideoProvider *provider = GetFactory(list[i])->CreateProvider(video,fps);
|
|
if (provider) return provider;
|
|
}
|
|
catch (wxString err) { error += list[i] + _T(" factory: ") + err + _T("\n"); }
|
|
catch (const wxChar *err) { error += list[i] + _T(" factory: ") + wxString(err) + _T("\n"); }
|
|
catch (...) { error += list[i] + _T(" factory: Unknown error\n"); }
|
|
}
|
|
|
|
// Failed
|
|
throw error;
|
|
}
|
|
|
|
|
|
//////////
|
|
// Static
|
|
std::map<wxString,VideoProviderFactory*>* AegisubFactory<VideoProviderFactory>::factories=NULL;
|