191 lines
5 KiB
C++
191 lines
5 KiB
C++
// Copyright (c) 2008, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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///////////
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// Headers
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#include "config.h"
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#include "video_provider_cache.h"
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///////////////
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// Constructor
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VideoProviderCache::VideoProviderCache(VideoProvider *parent) {
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master = parent;
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cacheMax = 0;
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SetCacheMax(parent->GetDesiredCacheSize());
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}
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//////////////
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// Destructor
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VideoProviderCache::~VideoProviderCache() {
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delete master;
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ClearCache();
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tempRGBFrame.Clear();
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}
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/////////////
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// Get frame
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const AegiVideoFrame VideoProviderCache::GetFrame(int n,int format) {
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// See if frame is cached
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CachedFrame cached;
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for (std::list<CachedFrame>::iterator cur=cache.begin();cur!=cache.end();cur++) {
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cached = *cur;
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if (cached.n == n) {
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cache.erase(cur);
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cache.push_back(cached);
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return cached.frame;
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}
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}
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// Not cached, retrieve it
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const AegiVideoFrame frame = master->GetFrame(n,FORMAT_RGB32);
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const AegiVideoFrame *srcFrame = &frame;
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// Convert to compatible format
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if (!(frame.format & format)) {
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if (format & FORMAT_RGB32) tempRGBFrame.format = FORMAT_RGB32;
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else throw _T("Unable to negotiate video frame format.");
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tempRGBFrame.w = frame.w;
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tempRGBFrame.h = frame.h;
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tempRGBFrame.pitch[0] = frame.w * 4;
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tempRGBFrame.ConvertFrom(frame);
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srcFrame = &tempRGBFrame;
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}
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// Cache frame
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pos = n;
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Cache(n,*srcFrame);
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return *srcFrame;
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}
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////////////////
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// Get as float
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void VideoProviderCache::GetFloatFrame(float* buffer, int n) {
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const AegiVideoFrame frame = GetFrame(n,FORMAT_RGB32);
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frame.GetFloat(buffer);
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}
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//////////////////////////
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// Set maximum cache size
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void VideoProviderCache::SetCacheMax(int n) {
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if (n < 0) n = 0;
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cacheMax = n;
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}
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////////////////
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// Add to cache
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void VideoProviderCache::Cache(int n,const AegiVideoFrame frame) {
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// Cache enabled?
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if (cacheMax == 0) return;
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// Cache full, use frame at front
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if (cache.size() >= cacheMax) {
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cache.push_back(cache.front());
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cache.pop_front();
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}
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// Cache not full, insert new one
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else {
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cache.push_back(CachedFrame());
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}
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// Cache
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cache.back().n = n;
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cache.back().frame.CopyFrom(frame);
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}
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///////////////
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// Clear cache
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void VideoProviderCache::ClearCache() {
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while (cache.size()) {
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cache.front().frame.Clear();
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cache.pop_front();
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}
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}
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///////////////////
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// Wrapper methods
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SubtitlesProvider *VideoProviderCache::GetAsSubtitlesProvider() {
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return master->GetAsSubtitlesProvider();
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}
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int VideoProviderCache::GetPosition() {
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return pos;
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}
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int VideoProviderCache::GetFrameCount() {
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return master->GetFrameCount();
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}
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int VideoProviderCache::GetWidth() {
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return master->GetWidth();
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}
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int VideoProviderCache::GetHeight() {
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return master->GetHeight();
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}
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double VideoProviderCache::GetFPS() {
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return master->GetFPS();
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}
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bool VideoProviderCache::IsVFR() {
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return master->IsVFR();
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}
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bool VideoProviderCache::AreKeyFramesLoaded() {
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return master->AreKeyFramesLoaded();
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}
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wxArrayInt VideoProviderCache::GetKeyFrames() {
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return master->GetKeyFrames();
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}
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FrameRate VideoProviderCache::GetTrueFrameRate() {
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return master->GetTrueFrameRate();
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}
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void VideoProviderCache::OverrideFrameTimeList(Aegisub::IntArray list) {
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master->OverrideFrameTimeList(list);
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}
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bool VideoProviderCache::IsNativelyByFrames() {
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return master->IsNativelyByFrames();
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}
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Aegisub::String VideoProviderCache::GetWarning() {
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return master->GetWarning();
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}
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Aegisub::String VideoProviderCache::GetDecoderName() {
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return master->GetDecoderName();
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}
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