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/******************************************************************************
* recordMyDesktop *
*******************************************************************************
* *
* Copyright (C) 2006,2007,2008 John Varouhakis *
* *
* *
* 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 *
* *
* *
* *
* For further information contact me at johnvarouhakis@gmail.com *
******************************************************************************/
#include "config.h"
#include "rmd_cache_frame.h"
#include "rmd_yuv_utils.h"
#include "rmd_cache.h"
#include "rmd_threads.h"
#include "rmd_types.h"
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <math.h>
#define BYTES_PER_MB (1024 * 1024)
#define CACHE_OUT_BUFFER_SIZE (4 * 1024)
static int rmdFlushBlock(
unsigned char *buf,
int blockno,
int width,
int height,
int blockwidth,
CacheFile *icf,
int flush)
{
int bytes_written = 0,
block_i = (!blockwidth) ? 0 : (blockno / (width / blockwidth)),//place on the grid
block_k = (!blockwidth) ? 0 : (blockno % (width / blockwidth));
register unsigned char *buf_reg = (&buf[(block_i * width + block_k) * blockwidth]);
static unsigned char out_buffer[CACHE_OUT_BUFFER_SIZE];
static unsigned int out_buffer_bytes = 0;
if (out_buffer_bytes + pow(blockwidth, 2) >= CACHE_OUT_BUFFER_SIZE || (flush && out_buffer_bytes)) {
rmdCacheFileWrite(icf, (void *)out_buffer, out_buffer_bytes); /* XXX: errors! */
bytes_written = out_buffer_bytes;
out_buffer_bytes = 0;
}
if (!flush) {
register unsigned char *out_buf_reg = &out_buffer[out_buffer_bytes];
for (int j = 0;j < blockwidth; j++) {
for(int i = 0;i < blockwidth; i++)
(*out_buf_reg++) = (*buf_reg++);
out_buffer_bytes += blockwidth;
buf_reg += width - blockwidth;
}
}
return bytes_written;
}
void *rmdCacheImageBuffer(ProgData *pdata)
{
int index_entry_size = sizeof(u_int32_t),
blocknum_x = pdata->enc_data->yuv.y_width / Y_UNIT_WIDTH,
blocknum_y = pdata->enc_data->yuv.y_height / Y_UNIT_WIDTH,
firstrun = 1,
frameno = 0,
nbytes = 0;
u_int32_t ynum, unum, vnum,
y_short_blocks[blocknum_x * blocknum_y],
u_short_blocks[blocknum_x * blocknum_y],
v_short_blocks[blocknum_x * blocknum_y];
unsigned long long int total_bytes = 0;
unsigned long long int total_received_bytes = 0;
unsigned int capture_frameno = 0;
CacheFile *icf;
rmdThreadsSetName("rmdCacheImages");
icf = pdata->cache_data->icf;
if (!icf)
exit(13);
while (pdata->running) {
FrameHeader fheader;
ynum = unum = vnum = 0;
pthread_mutex_lock(&pdata->img_buff_ready_mutex);
while (pdata->running && capture_frameno >= pdata->capture_frameno)
pthread_cond_wait(&pdata->image_buffer_ready, &pdata->img_buff_ready_mutex);
capture_frameno = pdata->capture_frameno;
pthread_mutex_unlock(&pdata->img_buff_ready_mutex);
pthread_mutex_lock(&pdata->pause_mutex);
while (pdata->paused)
pthread_cond_wait(&pdata->pause_cond, &pdata->pause_mutex);
pthread_mutex_unlock(&pdata->pause_mutex);
pthread_mutex_lock(&pdata->yuv_mutex);
//find and flush different blocks
if (firstrun) {
firstrun = 0;
for(int j = 0; j < blocknum_x * blocknum_y; j++) {
yblocks[ynum] = 1;
y_short_blocks[ynum] = j;
ynum++;
ublocks[unum] = 1;
u_short_blocks[unum] = j;
unum++;
vblocks[vnum] = 1;
v_short_blocks[vnum] = j;
vnum++;
}
} else {
/**COMPRESS ARRAYS*/
for(int j = 0; j < blocknum_x * blocknum_y; j++) {
if (yblocks[j]) {
y_short_blocks[ynum] = j;
ynum++;
}
if (ublocks[j]) {
u_short_blocks[unum] = j;
unum++;
}
if (vblocks[j]) {
v_short_blocks[vnum] = j;
vnum++;
}
}
}
/**WRITE FRAME TO DISK*/
if (icf->gzfp) {
if (ynum * 4 + unum + vnum > (blocknum_x * blocknum_y * 6) / 10)
gzsetparams(icf->gzfp, 1, Z_FILTERED);
else
gzsetparams(icf->gzfp, 0, Z_FILTERED);
}
strncpy(fheader.frame_prefix, "FRAM", 4);
fheader.capture_frameno = capture_frameno;
frameno++;
fheader.Ynum = ynum;
fheader.Unum = unum;
fheader.Vnum = vnum;
nbytes += rmdCacheFileWrite(icf, (void*)&fheader, sizeof(FrameHeader));
//flush indexes
if (ynum)
nbytes += rmdCacheFileWrite(icf, (void*)y_short_blocks, ynum * index_entry_size);
if (unum)
nbytes += rmdCacheFileWrite(icf, (void*)u_short_blocks, unum * index_entry_size);
if (vnum)
nbytes += rmdCacheFileWrite(icf, (void*)v_short_blocks, vnum * index_entry_size);
//flush the blocks for each buffer
if (ynum) {
for(int j = 0; j < ynum; j++)
nbytes += rmdFlushBlock(pdata->enc_data->yuv.y,
y_short_blocks[j],
pdata->enc_data->yuv.y_width,
pdata->enc_data->yuv.y_height,
Y_UNIT_WIDTH,
icf,
0);
}
if (unum) {
for(int j = 0; j < unum; j++)
nbytes += rmdFlushBlock(pdata->enc_data->yuv.u,
u_short_blocks[j],
pdata->enc_data->yuv.uv_width,
pdata->enc_data->yuv.uv_height,
UV_UNIT_WIDTH,
icf,
0);
}
if (vnum) {
for(int j = 0; j < vnum; j++)
nbytes += rmdFlushBlock(pdata->enc_data->yuv.v,
v_short_blocks[j],
pdata->enc_data->yuv.uv_width,
pdata->enc_data->yuv.uv_height,
UV_UNIT_WIDTH,
icf,
0);
}
//release main buffer
pthread_mutex_unlock(&pdata->yuv_mutex);
nbytes += rmdFlushBlock(NULL, 0, 0, 0, 0, icf, 1);
}
total_bytes += nbytes;
{
unsigned int bytes_per_pixel = pdata->specs.depth >= 24 ? 4 : 2;
unsigned int pixels_per_frame = pdata->enc_data->yuv.y_width * pdata->enc_data->yuv.y_height;
total_received_bytes = ((unsigned long long int)frameno) * bytes_per_pixel * pixels_per_frame;
}
if (total_received_bytes) {
double percent_of_data_left = (total_bytes / (double)total_received_bytes) * 100;
fprintf(stderr, "\n"
"*********************************************\n"
"\n"
"Cached %llu MB, from %llu MB that were received.\n"
"Average cache compression ratio: %.1f %%\n"
"\n"
"*********************************************\n",
total_bytes / BYTES_PER_MB,
total_received_bytes / BYTES_PER_MB,
100 - percent_of_data_left);
}
fprintf(stderr, "Saved %d frames in a total of %d requests\n",
frameno,
capture_frameno);
rmdCacheFileClose(pdata->cache_data->icf);
pthread_exit(&errno);
}
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