void* server_thread (void* t)
{
/* shared memory segment id */
int MyKey;
int reqMemSegID;
int resMemSegID;
/* shared memory flags */
int shmFlags;
/*pointer to the queue */
struct queue *request_ring;
struct queue *response_ring;
/*Keys to request & response structures*/
int REQ_KEY,RES_KEY;
/*Get the Thread ID */
int tid = (int)(int*)t;
MyKey = (int)message_box->client[tid];
printf("Servicing Client with Process ID %d, Thread ID %d\n",(int)MyKey,tid);
/*Get the keys for both rings*/
REQ_KEY = ftok(".", (int) MyKey * 0xAA );
RES_KEY = ftok(".", (int) MyKey * 0x33 );
/*Should not happen*/
assert(REQ_KEY != RES_KEY);
#if 1
/*---------------------------------------*/
/* Create shared memory segment */
/* Give everyone read/write permissions. */
/*---------------------------------------*/
shmFlags = IPC_CREAT | SHM_PERM;
/*Request ring creation*/
if ( (reqMemSegID =
shmget(REQ_KEY, SHM_SIZE, shmFlags)) < 0 )
{
perror("SERVER: shmget");
exit(EXIT_FAILURE);
}
printf("Created shared location for request ring buffer\n");
/*Response ring creation*/
if ( (resMemSegID =
shmget(RES_KEY, SHM_SIZE, shmFlags)) < 0 )
{
perror("SERVER: shmget");
exit(EXIT_FAILURE);
}
printf("Created shared location for response ring buffer\n");
/*-------------------------------------------*/
/* Attach the segment to the process's data */
/* space at an address */
/* selected by the system. */
/*-------------------------------------------*/
/*Changed by Pradeep*/
shmFlags = 0;
/*Get Request Ring*/
if ( (request_ring =
shmat(reqMemSegID, NULL, shmFlags)) ==
(void *) -1 )
{
perror("SERVER: shmat");
exit(EXIT_FAILURE);
}
printf("Request Ring buffer attached to process\n");
/*Get Response Ring*/
if ( (response_ring =
shmat(resMemSegID, NULL, shmFlags)) ==
(void *) -1 )
{
perror("SERVER: shmat");
exit(EXIT_FAILURE);
}
printf("Response Ring buffer attached to process\n");
while(1){
if(is_empty(request_ring))
{
//pthread_cond_wait(&cond_thread, &mutex_thread);
sleep(1);
}
else if(!is_empty(request_ring))
{
printf("Got a request, Dequeuing it \n");
Task temp = dequeue(request_ring);
compute_mod(&temp);
printf("Computed Mod\n");
enqueue(response_ring,temp);
}
}
/*------------------------------------------------*/
/* Call shmdt() to detach shared memory segment. */
/*------------------------------------------------*/
if ( shmdt(request_ring) < 0 )
{
perror("SERVER: shmdt");
exit(EXIT_FAILURE);
}
if ( shmdt(response_ring) < 0 )
{
perror("SERVER: shmdt");
exit(EXIT_FAILURE);
}
/*--------------------------------------------------*/
/* Call shmctl to remove shared memory segment. */
/*--------------------------------------------------*/
if (shmctl(reqMemSegID, IPC_RMID, NULL) < 0)
{
perror("SERVER: shmctl");
exit(EXIT_FAILURE);
}
if (shmctl(resMemSegID, IPC_RMID, NULL) < 0)
{
perror("SERVER: shmctl");
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
#endif
} /* end of main() */
void CLS_DlgStreamPusher::audio_display(struct_stream_info *_pstrct_streaminfo)
{
if (audio_callback_time == 0){
TRACE("audio_callback_time == 0");
return;
}
int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
int ch, channels, h, h2, bgcolor, fgcolor;
int16_t time_diff;
int rdft_bits, nb_freq;
for (rdft_bits = 1; (1 << rdft_bits) < 2 * _pstrct_streaminfo->m_height; rdft_bits++)
;
nb_freq = 1 << (rdft_bits - 1);
/* compute display index : center on currently output samples */
channels = _pstrct_streaminfo->m_audio_tgt.channels;
nb_display_channels = channels;
if (!_pstrct_streaminfo->m_paused) {
int data_used = _pstrct_streaminfo->m_show_mode == SHOW_MODE_WAVES ? _pstrct_streaminfo->m_width : (2 * nb_freq);
n = 2 * channels;
delay = _pstrct_streaminfo->m_audio_write_buf_size;
delay /= n;
/* to be more precise, we take into account the time spent since
the last buffer computation */
if (audio_callback_time) {
time_diff = av_gettime() - audio_callback_time;
delay -= (time_diff * _pstrct_streaminfo->m_audio_tgt.freq) / 1000000;
}
delay += 2 * data_used;
if (delay < data_used)
delay = data_used;
i_start = x = compute_mod(_pstrct_streaminfo->m_sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
if (_pstrct_streaminfo->m_show_mode == SHOW_MODE_WAVES) {
h = INT_MIN;
for (i = 0; i < 1000; i += channels) {
int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
int a = _pstrct_streaminfo->m_sample_array[idx];
int b = _pstrct_streaminfo->m_sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
int c = _pstrct_streaminfo->m_sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
int d = _pstrct_streaminfo->m_sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
int score = a - d;
if (h < score && (b ^ c) < 0) {
h = score;
i_start = idx;
}
}
}
_pstrct_streaminfo->m_audio_last_i_start = i_start;
}
//背景色
bgcolor = SDL_MapRGB(_pstrct_streaminfo->m_screen_surface->format, 0x00, 0x00, 0x00);
if (_pstrct_streaminfo->m_show_mode == SHOW_MODE_WAVES) {
SDL_Rect sdl_rect;
_pstrct_streaminfo->m_xleft = 0;
_pstrct_streaminfo->m_ytop = 0;
sdl_rect.x = _pstrct_streaminfo->m_xleft;
sdl_rect.y = _pstrct_streaminfo->m_ytop;
sdl_rect.w = _pstrct_streaminfo->m_width;
sdl_rect.h = _pstrct_streaminfo->m_height;
fill_rec(_pstrct_streaminfo->m_screen_surface, _pstrct_streaminfo->m_xleft, _pstrct_streaminfo->m_ytop, _pstrct_streaminfo->m_width, _pstrct_streaminfo->m_height,bgcolor);
fgcolor = SDL_MapRGB(_pstrct_streaminfo->m_screen_surface->format, 0xff, 0xff, 0xff);
/* total height for one channel */
h = _pstrct_streaminfo->m_height / nb_display_channels;
/* graph height / 2 */
h2 = (h * 9) / 20;
for (ch = 0; ch < nb_display_channels; ch++) {
i = i_start + ch;
y1 = _pstrct_streaminfo->m_ytop + ch * h + (h / 2); /* position of center line */
for (x = 0; x < _pstrct_streaminfo->m_width; x++) {
y = (_pstrct_streaminfo->m_sample_array[i] * h2) >> 15;
if (y < 0) {
y = -y;
ys = y1 - y;
}
else {
ys = y1;
}
fill_rec(_pstrct_streaminfo->m_screen_surface, _pstrct_streaminfo->m_xleft + x, ys, 1, y, fgcolor);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
}
fgcolor = SDL_MapRGB(_pstrct_streaminfo->m_screen_surface->format, 0x00, 0x00, 0xff);
for (ch = 1; ch < nb_display_channels; ch++) {
y = _pstrct_streaminfo->m_ytop + ch * h;
fill_rec(_pstrct_streaminfo->m_screen_surface, _pstrct_streaminfo->m_xleft, y, _pstrct_streaminfo->m_width, 1, fgcolor);
}
if (SDL_UpdateWindowSurface(_pstrct_streaminfo->m_show_screen) != 0){
TRACE("SDL_UpdateWindowSurface ERR");
}
//SDL_CreateRGBSurface();
SDL_UpdateTexture(_pstrct_streaminfo->m_sdlTexture, NULL, _pstrct_streaminfo->m_screen_surface->pixels, _pstrct_streaminfo->m_screen_surface->pitch);
SDL_RenderClear(_pstrct_streaminfo->m_sdlRenderer);
SDL_RenderCopy(_pstrct_streaminfo->m_sdlRenderer, _pstrct_streaminfo->m_sdlTexture, &sdl_rect, &sdl_rect);
SDL_RenderPresent(_pstrct_streaminfo->m_sdlRenderer);
}
static xmlrpc_value *
calculate_modexp(xmlrpc_env * const env,
xmlrpc_value * const param_array,
void * const serverInfo,
void * const channelInfo) {
int i = 0;
Task temp;
xmlrpc_value * retval;
xmlrpc_value * arrayP;
xmlrpc_decompose_value(env, param_array, "(A)", &arrayP);
size_t size = xmlrpc_array_size(env, arrayP);
if (env->fault_occurred)
retval = NULL;
else
{
for (i = 0; i < size && !env->fault_occurred; ++i)
{
xmlrpc_value * strctP;
strctP = xmlrpc_array_get_item(env, arrayP, i);
if (!env->fault_occurred)
{
if(i == 0)
{
const char * str1;
size_t str1_len;
xmlrpc_read_string_lp(env, strctP, &str1_len, &str1);
//xmlrpc_int32 curly;
//xmlrpc_decompose_value(env, strctP, "(s)",&ip[0]);
strcpy(temp._clientid, str1);
}
else
{
const char * str1;
size_t str1_len;
xmlrpc_read_string_lp(env, strctP, &str1_len, &str1);
if(i == 1)
strcpy(temp.p,str1);
else if(i == 2)
strcpy(temp.m,str1);
}
}
}
}
xmlrpc_DECREF(arrayP);
if (env->fault_occurred)
return NULL;
printf("Received: %s %s %s\n",temp._clientid,temp.p,temp.m);
/* Add our two numbers. */
// z = x + y;
/* Sometimes, make it look hard (so client can see what it's like
to do an RPC that takes a while).
*/
compute_mod(&temp);
xmlrpc_value *arr = xmlrpc_array_new(env);
xmlrpc_value *v1 = xmlrpc_build_value(env, "s", temp.response);
xmlrpc_array_append_item (env,arr,v1);
/* Return our result. */
return xmlrpc_build_value(env,"(A)", arr);
}