--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "asset.h"
+#include "assets.h"
+#include "byteorder.h"
+#include "bccmodels.h"
+#include "file.h"
+#include "filebase.h"
+#include "overlayframe.h"
+#include "sizes.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+FileBase::FileBase(Asset *asset, File *file)
+{
+ this->file = file;
+ this->asset = asset;
+ internal_byte_order = get_byte_order();
+ reset_parameters();
+ overlayer = new OverlayFrame;
+}
+
+FileBase::~FileBase()
+{
+ close_file();
+ if(row_pointers_in) delete [] row_pointers_in;
+ if(row_pointers_out) delete [] row_pointers_out;
+ if(float_buffer) delete [] float_buffer;
+ delete overlayer;
+}
+
+int FileBase::close_file()
+{
+ if(row_pointers_in) delete [] row_pointers_in;
+ if(row_pointers_out) delete [] row_pointers_out;
+ if(float_buffer) delete [] float_buffer;
+
+
+ if(pcm_history)
+ {
+ for(int i = 0; i < history_channels; i++)
+ delete [] pcm_history[i];
+ delete [] pcm_history;
+ }
+
+
+ close_file_derived();
+ reset_parameters();
+ return 0;
+}
+
+void FileBase::update_pcm_history(int64_t len)
+{
+ decode_start = 0;
+ decode_len = 0;
+
+ if(!pcm_history)
+ {
+ history_channels = asset->channels;
+ pcm_history = new double*[history_channels];
+ for(int i = 0; i < history_channels; i++)
+ pcm_history[i] = new double[HISTORY_MAX];
+ history_start = 0;
+ history_size = 0;
+ history_allocated = HISTORY_MAX;
+ }
+
+
+//printf("FileBase::update_pcm_history current_sample=%jd history_start=%jd history_size=%jd\n",
+//file->current_sample,
+//history_start,
+//history_size);
+// Restart history. Don't bother shifting history back.
+ if(file->current_sample < history_start ||
+ file->current_sample > history_start + history_size)
+ {
+ history_size = 0;
+ history_start = file->current_sample;
+ decode_start = file->current_sample;
+ decode_len = len;
+ }
+ else
+// Shift history forward to make room for new samples
+ if(file->current_sample > history_start + HISTORY_MAX)
+ {
+ int diff = file->current_sample - (history_start + HISTORY_MAX);
+ for(int i = 0; i < asset->channels; i++)
+ {
+ double *temp = pcm_history[i];
+ memcpy(temp, temp + diff, (history_size - diff) * sizeof(double));
+ }
+
+ history_start += diff;
+ history_size -= diff;
+
+// Decode more data
+ decode_start = history_start + history_size;
+ decode_len = file->current_sample + len - (history_start + history_size);
+ }
+ else
+// Starting somewhere in the buffer
+ {
+ decode_start = history_start + history_size;
+ decode_len = file->current_sample + len - (history_start + history_size);
+ }
+}
+
+void FileBase::append_history(float **new_data, int len)
+{
+ allocate_history(len);
+
+ for(int i = 0; i < history_channels; i++)
+ {
+ double *output = pcm_history[i] + history_size;
+ float *input = new_data[i];
+ for(int j = 0; j < len; j++)
+ *output++ = *input++;
+ }
+
+ history_size += len;
+ decode_end += len;
+}
+
+void FileBase::append_history(short *new_data, int len)
+{
+ allocate_history(len);
+
+ for(int i = 0; i < history_channels; i++)
+ {
+ double *output = pcm_history[i] + history_size;
+ short *input = new_data + i;
+ for(int j = 0; j < len; j++)
+ {
+ *output++ = (double)*input / 32768;
+ input += history_channels;
+ }
+ }
+
+ history_size += len;
+ decode_end += len;
+}
+
+void FileBase::read_history(double *dst,
+ int64_t start_sample,
+ int channel,
+ int64_t len)
+{
+ if(start_sample - history_start + len > history_size)
+ len = history_size - (start_sample - history_start);
+//printf("FileBase::read_history start_sample=%jd history_start=%jd history_size=%jd len=%jd\n",
+//start_sample, history_start, history_size, len);
+ double *input = pcm_history[channel] + start_sample - history_start;
+ for(int i = 0; i < len; i++)
+ {
+ *dst++ = *input++;
+ }
+}
+
+void FileBase::allocate_history(int len)
+{
+ if(history_size + len > history_allocated)
+ {
+ double **temp = new double*[history_channels];
+
+ for(int i = 0; i < history_channels; i++)
+ {
+ temp[i] = new double[history_size + len];
+ memcpy(temp[i], pcm_history[i], history_size * sizeof(double));
+ delete [] pcm_history[i];
+ }
+
+ delete [] pcm_history;
+ pcm_history = temp;
+ history_allocated = history_size + len;
+ }
+}
+
+int64_t FileBase::get_history_sample()
+{
+ return history_start + history_size;
+}
+
+int FileBase::set_dither()
+{
+ dither = 1;
+ return 0;
+}
+
+void FileBase::reset_parameters()
+{
+ dither = 0;
+ float_buffer = 0;
+ row_pointers_in = 0;
+ row_pointers_out = 0;
+ prev_buffer_position = -1;
+ prev_frame_position = -1;
+ prev_len = 0;
+ prev_bytes = 0;
+ prev_track = -1;
+ prev_layer = -1;
+ ulawtofloat_table = 0;
+ floattoulaw_table = 0;
+ rd = wr = 0;
+ pcm_history = 0;
+ history_start = 0;
+ history_size = 0;
+ history_allocated = 0;
+ history_channels = 0;
+ decode_end = 0;
+
+ delete_ulaw_tables();
+ reset_parameters_derived();
+}
+
+void FileBase::get_mode(char *mode, int rd, int wr)
+{
+ if(rd && !wr) sprintf(mode, "rb");
+ else if(!rd && wr) sprintf(mode, "wb");
+ else if(rd && wr) {
+ int exists = 0;
+ FILE *stream = fopen(asset->path, "rb");
+ if( stream ) {
+ exists = 1;
+ fclose(stream);
+ }
+ sprintf(mode, exists ? "rb+" : "wb+");
+ }
+}
+
+
+// ======================================= audio codecs
+
+int FileBase::get_video_buffer(unsigned char **buffer, int depth)
+{
+// get a raw video buffer for writing or compression by a library
+ if(!*buffer)
+ {
+// Video compression is entirely done in the library.
+ int64_t bytes = asset->width * asset->height * depth;
+ *buffer = new unsigned char[bytes];
+ }
+ return 0;
+}
+
+int FileBase::get_row_pointers(unsigned char *buffer, unsigned char ***pointers, int depth)
+{
+// This might be fooled if a new VFrame is created at the same address with a different height.
+ if(*pointers && (*pointers)[0] != &buffer[0])
+ {
+ delete [] *pointers;
+ *pointers = 0;
+ }
+
+ if(!*pointers)
+ {
+ *pointers = new unsigned char*[asset->height];
+ for(int i = 0; i < asset->height; i++)
+ {
+ (*pointers)[i] = &buffer[i * asset->width * depth / 8];
+ }
+ }
+ return 0;
+}
+
+int FileBase::match4(const char *in, const char *out)
+{
+ return in[0] == out[0] && in[1] == out[1] &&
+ in[2] == out[2] && in[3] == out[3] ? 1 : 0;
+}
+
+int FileBase::search_render_strategies(ArrayList<int>* render_strategies, int render_strategy)
+{
+ for(int i = 0; i < render_strategies->total; i++)
+ if(render_strategies->values[i] == render_strategy) return 1;
+ return 0;
+}
+
+
+int64_t FileBase::base_memory_usage()
+{
+//printf("FileBase::base_memory_usage %d\n", __LINE__);
+ return !pcm_history ? 0 :
+ history_allocated * history_channels * sizeof(double);
+}
+
+
projects / goodguy / history.git / blobdiff