4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "bcsignals.h"
26 #include "framecache.h"
27 #include "indexable.h"
39 FrameCacheItem::FrameCacheItem()
44 frame_rate = (double)30000.0 / 1001;
47 FrameCacheItem::~FrameCacheItem()
52 int FrameCacheItem::get_size()
54 if(data) return data->get_data_size() + (path ? strlen(path)+1 : 0);
72 FrameCache::FrameCache()
77 FrameCache::~FrameCache()
82 // Returns 1 if frame exists in cache and copies it to the frame argument.
83 int FrameCache::get_frame(VFrame *frame,
89 lock->lock("FrameCache::get_frame");
90 FrameCacheItem *result = 0;
92 if(frame_exists(frame,
101 // Frame may have come from the readahead thread.
102 // Those frames are in the codec color model.
103 // But to pass frame_exists, they must be identical.
104 // BC_CModels::transfer(frame->get_rows(),
105 // result->data->get_rows(),
106 // result->data->get_y(),
107 // result->data->get_u(),
108 // result->data->get_v(),
114 // result->data->get_w(),
115 // result->data->get_h(),
120 // result->data->get_color_model(),
121 // frame->get_color_model(),
123 // result->data->get_w(),
126 // no context data since keyframe updates may vary input
127 frame->copy_from(result->data);
129 result->age = get_age();
141 VFrame* FrameCache::get_frame_ptr(int64_t position,
149 lock->lock("FrameCache::get_frame_ptr");
150 FrameCacheItem *result = 0;
151 if(frame_exists(position,
160 result->age = get_age();
169 // Puts frame in cache if enough space exists and the frame doesn't already
171 void FrameCache::put_frame(VFrame *frame, int64_t position,
172 int layer, double frame_rate, int use_copy, Indexable *indexable)
174 lock->lock("FrameCache::put_frame");
175 FrameCacheItem *item = 0;
177 if(indexable) source_id = indexable->id;
179 //printf("FrameCache::put_frame %d position=%jd\n", __LINE__, position);
181 if(frame_exists(frame, position, layer, frame_rate, &item, source_id)) {
182 item->age = get_age();
188 item = new FrameCacheItem;
190 item->data = use_copy ? new VFrame(*frame) : frame;
193 item->position = position;
195 item->frame_rate = frame_rate;
196 item->source_id = source_id;
198 item->path = cstrdup(indexable->path);
200 item->age = position < 0 ? INT_MAX : get_age();
202 //printf("FrameCache::put_frame %d position=%jd\n", __LINE__, position);
207 VFrame *FrameCache::new_cache_frame(int64_t position, int w, int h,
208 int color_model, int layer, double frame_rate, int first_frame)
210 FrameCacheItem *item = 0;
211 lock->lock("FrameCache::put_vframe");
212 if( frame_exists(position, layer, frame_rate, color_model, w, h, &item, -1) ) {
217 while( last ) delete last;
221 item = new FrameCacheItem;
222 item->data = new VFrame(w, h, color_model);
223 item->position = position;
225 item->frame_rate = frame_rate;
226 item->source_id = -1;
227 item->age = position < 0 ? INT_MAX : get_age();
231 void FrameCache::put_cache_frame()
236 int FrameCache::frame_exists(VFrame *format, int64_t position,
237 int layer, double frame_rate, FrameCacheItem **item_return, int source_id)
239 FrameCacheItem *item = (FrameCacheItem*)get_item(position);
240 for( ; item && item->position == position; item = (FrameCacheItem*)item->next ) {
241 if( !EQUIV(item->frame_rate, frame_rate) ) continue;
242 if( layer != item->layer ) continue;
243 if( !format->equivalent(item->data, 0) ) continue;
244 if( source_id == -1 || item->source_id == -1 ||
245 source_id == item->source_id ) {
253 int FrameCache::frame_exists(int64_t position, int layer, double frame_rate,
254 int color_model, int w, int h, FrameCacheItem **item_return, int source_id)
256 FrameCacheItem *item = (FrameCacheItem*)get_item(position);
257 for( ; item && item->position == position ; item = (FrameCacheItem*)item->next ) {
258 if( !EQUIV(item->frame_rate, frame_rate) ) continue;
259 if( layer != item->layer ) continue;
260 if( color_model != item->data->get_color_model() ) continue;
261 if( w != item->data->get_w() ) continue;
262 if( h != item->data->get_h() ) continue;
263 if( source_id == -1 || item->source_id == -1 ||
264 source_id == item->source_id ) {
273 void FrameCache::dump()
275 // lock->lock("FrameCache::dump");
276 printf("FrameCache::dump 1 %d\n", total());
277 FrameCacheItem *item = (FrameCacheItem *)first;
279 printf(" position=%jd frame_rate=%f age=%d size=%ld\n",
280 item->position, item->frame_rate, item->age,
281 item->data->get_data_size());
282 item = (FrameCacheItem*)item->next;