/* main context */
static void spice_gst_decoder_destroy(VideoDecoder *video_decoder)
{
SpiceGstDecoder *decoder = (SpiceGstDecoder*)video_decoder;
/* Stop and free the pipeline to ensure there will not be any further
* new_sample() call (clearing thread-safety concerns).
*/
free_pipeline(decoder);
/* Even if we kept the decoder around, once we return the stream will be
* destroyed making it impossible to display frames. So cancel any
* scheduled display_frame() call and drop the queued frames.
*/
if (decoder->timer_id) {
g_source_remove(decoder->timer_id);
}
g_mutex_clear(&decoder->queues_mutex);
SpiceGstFrame *gstframe;
while ((gstframe = g_queue_pop_head(decoder->decoding_queue))) {
free_gst_frame(gstframe);
}
g_queue_free(decoder->decoding_queue);
while ((gstframe = g_queue_pop_head(decoder->display_queue))) {
free_gst_frame(gstframe);
}
g_queue_free(decoder->display_queue);
free(decoder);
/* Don't call gst_deinit() as other parts of the client
* may still be using GStreamer.
*/
}
static gboolean create_pipeline(SpiceGstDecoder *decoder)
{
gchar *desc;
gboolean auto_enabled;
guint opt;
GstAppSinkCallbacks appsink_cbs = { NULL };
GError *err = NULL;
GstBus *bus;
auto_enabled = (g_getenv("SPICE_GSTVIDEO_AUTO") != NULL);
if (auto_enabled || !VALID_VIDEO_CODEC_TYPE(decoder->base.codec_type)) {
SPICE_DEBUG("Trying %s for codec type %d %s",
gst_opts[0].dec_name, decoder->base.codec_type,
(auto_enabled) ? "(SPICE_GSTVIDEO_AUTO is set)" : "");
opt = 0;
} else {
opt = decoder->base.codec_type;
}
/* - We schedule the frame display ourselves so set sync=false on appsink
* so the pipeline decodes them as fast as possible. This will also
* minimize the risk of frames getting lost when we rebuild the
* pipeline.
* - Set max-bytes=0 on appsrc so it does not drop frames that may be
* needed by those that follow.
*/
desc = g_strdup_printf("appsrc name=src is-live=true format=time max-bytes=0 block=true "
"%s ! %s ! videoconvert ! appsink name=sink "
"caps=video/x-raw,format=BGRx sync=false drop=false",
gst_opts[opt].dec_caps, gst_opts[opt].dec_name);
SPICE_DEBUG("GStreamer pipeline: %s", desc);
decoder->pipeline = gst_parse_launch_full(desc, NULL, GST_PARSE_FLAG_FATAL_ERRORS, &err);
g_free(desc);
if (!decoder->pipeline) {
spice_warning("GStreamer error: %s", err->message);
g_clear_error(&err);
return FALSE;
}
decoder->appsrc = GST_APP_SRC(gst_bin_get_by_name(GST_BIN(decoder->pipeline), "src"));
decoder->appsink = GST_APP_SINK(gst_bin_get_by_name(GST_BIN(decoder->pipeline), "sink"));
appsink_cbs.new_sample = new_sample;
gst_app_sink_set_callbacks(decoder->appsink, &appsink_cbs, decoder, NULL);
bus = gst_pipeline_get_bus(GST_PIPELINE(decoder->pipeline));
gst_bus_add_watch(bus, handle_pipeline_message, decoder);
gst_object_unref(bus);
decoder->clock = gst_pipeline_get_clock(GST_PIPELINE(decoder->pipeline));
if (gst_element_set_state(decoder->pipeline, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
SPICE_DEBUG("GStreamer error: Unable to set the pipeline to the playing state.");
free_pipeline(decoder);
return FALSE;
}
return TRUE;
}
static gboolean handle_pipeline_message(GstBus *bus, GstMessage *msg, gpointer video_decoder)
{
SpiceGstDecoder *decoder = video_decoder;
if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ERROR) {
GError *err = NULL;
gchar *debug_info = NULL;
gst_message_parse_error(msg, &err, &debug_info);
spice_warning("GStreamer error from element %s: %s",
GST_OBJECT_NAME(msg->src), err->message);
if (debug_info) {
SPICE_DEBUG("debug information: %s", debug_info);
g_free(debug_info);
}
g_clear_error(&err);
/* We won't be able to process any more frame anyway */
free_pipeline(decoder);
}
return TRUE;
}
int main(int argc, char *argv[]){
char *line;
pipeline pl;
int run;
//flags
int redo = 0;
int skip = 0;
int isResume = 0;
char *promptstr;
char* buffer;
numExits = 0;
jobIndex = 0;
histIndex = 0;
back = 0;
script = 0;
FILE* in;
/* check for the right number of arguments */
//if ( argc > 2 ) {
// printusage(argv[0]);
// exit(-1);
//}
if (argc >= 2)
{
DIR* dirp;
struct dirent *dp;
int isFound = 0;
if ((dirp = opendir(".")) == NULL)
{
perror("couldn't open path");
return 0;
}
//put files into array and sort their names
while ((dp = readdir(dirp)) != NULL)
{
if (strcmp(dp->d_name, argv[1]) == 0)
{
isFound = 1;
}
}
if (isFound == 0)
{
printf("%s: Command not found\n", argv[1]);
}
else
{
in = fopen(argv[1], "r");
buffer = (char*)malloc(sizeof(in));
script = 1;
}
}
//struct termios saved_term_mode;
struct sigaction action;
action.sa_handler = killHandle; /* set tick to be the handler function */
sigemptyset(&action.sa_mask); /* clear out masked functions */
action.sa_flags = 0; /* no special handling */
struct sigaction action2;
action2.sa_handler = susHandle; /* set tick to be the handler function */
sigemptyset(&action2.sa_mask); /* clear out masked functions */
action2.sa_flags = 0; /* no special handling */
/*
* Use the sigaction function to associate the signal action with SIGALRM.
*/
if (sigaction(SIGINT, &action, NULL) < 0 ) {
fprintf(stderr, "SIGINT\n");
exit(-1);
}
if(sigaction(SIGTSTP, &action2, NULL) < 0) {
fprintf(stderr, "SIGTSTP\n");
exit(-1);
}
//saved_term_mode = set_raw_term_mode();
initHistory();
initJobs();
//strcpy(jobs[1], "hey");
/* set prompt */
promptstr = PROMPT;
run = TRUE;
if (script == 0)
prompt(promptstr);
while ( run )
{
/// if reexecute was not called
if (redo == 0)
{
if (script == 0)
{
if ( NULL == (line = readLongString(stdin)) )
{
if ( feof(stdin) )
run = FALSE;
}
}
else
{
fgets(line, sizeof(in), in);
if (line[0] == '%')
{
line++;
isResume = 1;
}
}
}
else
{
//printf("histInd: %d\n", histIndex);
///if reexecute was called,
///find the correct place in the history
///list to extract the reexecuted command
int temp = histIndex;
temp--;
int ind = 0;
while (ind != reNumber)
{
temp--;
ind++;
}
line = history[temp];
printf("%s\n", line);
}
if (line == NULL)
{
if (feof(stdin))
run = FALSE;
}
else
{
if (line[0] == '%')
{
line++;
isResume = 1;
}
/* We got a line, send it off to the pipeline cracker and
* launch it
*/
//if (redo == 0)
//{
pl = crack_pipeline(line);
//}
redo = 0;
/*
* Show that it worked. This is where you're going to do
* something radically different: rather than printing the
* pipeline, you're going to execute it.
*/
if ( pl != NULL && strlen(pl->cline) > 0)
{
/*
if (pl->cline[0] == '%')
{
int i;
isResume = 1;
pl->stage[0].argv[0][0] = ' ';
for (i = 0; i < strlen(pl->cline)-1; i++)
{
pl->stage[0].argv[0][i] = pl->stage[0].argv[0][i+1];
}
pl->stage[0].argv[0][strlen(pl->cline)-1] = '\0';
}
*/
//print_pipeline(stdout,pl); /* print it. */
addHistory(pl->cline);
///add to the history what was typed into the command line
if (strcmp(pl->stage[0].argv[0], "history") == 0)
{
///print the history if possible
if (pl->stage[0].argc > 1)
{
printf("Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
printHistory();
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "jobs") == 0)
{
///print the suspended jobs if possible
if (pl->stage[0].argc > 1)
{
printf("Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
printJobs();
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "exit") == 0)
{
///exit vssh if possible
if (pl->stage[0].argc > 1)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits++;
if (skip == 0)
exitCmd();
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "bg") == 0)
{
///background the most recently suspended job if possible
if (pl->stage[0].argc > 1)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
bg(jobs[jobIndex-1]);
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "fg") == 0)
{
///foreground the most recently backgrounded job if possible
if (pl->stage[0].argc > 1)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
fg(jobs[jobIndex-1]);
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "cd") == 0)
{
///change the directory of vssh if possible
if (pl->stage[0].argc > 2)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
cd(pl->stage[0].argv[1]);
skip = 0;
}
else if (isResume == 1)
{
///foreground the specified job if possible
if (pl->stage[0].argc > 1)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
{
//pl->stage[0].argv[0]++;
int i;
int killFlag = 0;
for (i = 0; i < strlen(pl->stage[0].argv[0]); i++)
{
if (!isdigit(pl->stage[0].argv[0][i]))
{
///if the supplied job number is not a number
///then print error
killFlag = 1;
fprintf(stderr, "%s: No such job.\n", pl->stage[0].argv[0]);
}
}
if (killFlag == 0)
{
if (atoi(pl->stage[0].argv[0]) <= 0 || atoi(pl->stage[0].argv[0]) > jobIndex)
///if the supplied job number is not a valid job index
///then print error
fprintf(stderr, "%s: No such job.\n", pl->stage[0].argv[0]);
else
resume(jobs[atoi(pl->stage[0].argv[0])-1]->id, atoi(pl->stage[0].argv[0])-1);
}
}
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "!") == 0)
{
///reexecute the specified history command if possible
if (pl->stage[0].argc > 2 || strlen(pl->stage[0].argv[1]) > 3)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
///if the number supplied is not a valid history index
///then print error
if (pl->stage[0].argv[1][0] == '0' && skip == 0)
{
fprintf(stderr, "%s: Event not found\n", pl->stage[0].argv[1]);
skip = 1;
}
if (strlen(history[atoi(pl->stage[0].argv[1])]) <= 0 && skip == 0)
{
fprintf(stderr, "%s: Event not found\n", pl->stage[0].argv[1]);
skip = 1;
}
int i;
for (i = 0; i < strlen(pl->stage[0].argv[1]); i++)
{
if (!isdigit(pl->stage[0].argv[1][i]) && skip == 0)
{
///if the number supplied is not a number
///then print error
fprintf(stderr, "%s: Event not found\n", pl->stage[0].argv[1]);
skip = 1;
}
}
numExits = 0;
if (skip == 0)
{
redo = 1;
reNumber = atoi(pl->stage[0].argv[1]);
//printf("renum: %d\n", reNumber);
//pl = crack_pipeline(history[atoi(pl->stage[0].argv[1])]);
//printf("%s\n", pl->cline);
//lineno++;
//continue;
}
skip = 0;
}
else if (strcmp(pl->stage[0].argv[0], "kill") == 0)
{
///kill the specified job if possible
if (pl->stage[0].argc > 2)
{
fprintf(stderr, "Junk after built-in command\n");
skip = 1;
}
numExits = 0;
if (skip == 0)
{
int i;
int killFlag = 0;
for (i = 0; i < strlen(pl->stage[0].argv[1]); i++)
{
///if the supplied job number is not a number
///then print error
if (!isdigit(pl->stage[0].argv[1][i]))
{
killFlag = 1;
fprintf(stderr, "%s: No such job.\n", pl->stage[0].argv[1]);
}
}
if (killFlag == 0)
{
if (atoi(pl->stage[0].argv[1]) <= 0 || atoi(pl->stage[0].argv[1]) > jobIndex)
///if the supplied job number is not a valid job index
///then print error
fprintf(stderr, "%s: No such job.\n", pl->stage[0].argv[1]);
else
killProcess(atoi(pl->stage[0].argv[1])-1, jobs[atoi(pl->stage[0].argv[1])-1]->id);
}
}
skip = 0;
}
else
{
///pipe/redirect as necessary
numExits = 0;
//int i;
//for (i = 0; i < pl->length; i++)
//{
//else
//{
//handle backgrounding "&"
//find the &
int j;
int andFound = 0;
int pipeFound = 0;
for (j = 1; j < strlen(pl->cline); j++)
{
if (pl->cline[j] == '|')
{
//fprintf(stderr, "Pipelines cannot be backgrounded\n");
pipeFound = 1;
}
else if (pl->cline[j] == '&')
{
//error if & is not the last arg, exec nothing
if (pipeFound == 1)
{
fprintf(stderr, "Pipelines cannot be backgrounded\n");
}
else if (j != strlen(pl->cline) - 1)
{
andFound = 1;
fprintf(stderr, "Junk after '&'.\n");
}
else if (pl->cline[j-1] == ' ')
{
andFound = 1;
pl->cline[j] = '\0';
//backExec(pl->stage[0].argv[0], pl->stage[0].argv, pl->cline);
back = 1;
}
}
}
if (pl->length >= 2)
{
///pipe if the pipline has 2 or more stages
pipeCmd(pl);
}
else if (pl->stage[0].outname != NULL && pl->stage[0].inname != NULL)
{
redirectBoth(pl->stage[0].argv, pl->stage[0].inname, pl->stage[0].outname);
}
else if (pl->stage[0].outname != NULL)
{
///otherwise redirect output if there is an outfile
redirectOutput(pl->stage[0].argv, pl->stage[0].outname, pl->cline);
}
else if (pl->stage[0].inname != NULL)
{
///otherwise redirect input if there is an infile
redirectInput(pl->stage[0].argv, pl->stage[0].inname, pl->cline);
}
else if (andFound == 0)
{
//execute if not a built-in command
execute(pl->stage[0].argv[0], pl->stage[0].argv, pl->cline);
}
back = 0;
//}
//}
}
}
free_pipeline(pl);
fflush(stdout); /* also frees line */
lineno++; /* readLongString trims newlines, so increment it manually */
}
if (run )
{
if (script == 0) /* assuming we still want to run */
prompt(promptstr);
}
}
return 0;
}
int main (int argc, const char * argv[])
{
char *line;
pipeline pl;
char *promptstr;
initHistory();
initJobs();
/* check for the right number of arguments */
if(argc >= 2)
{
FILE* theFile = fopen(argv[1], "r");
if(theFile == NULL)
{
if(errno == ENOENT)
{
fprintf(stderr, "%s: Command not found.\n", argv[1]);
}
else
{
perror("fopen");
}
exit(-1);
}
if(dup2(fileno(theFile), STDIN_FILENO) == -1)
{
perror("dup2");
exit(-1);
}
fclose(theFile);
}
/* set prompt */
promptstr = PROMPT;
prompt(promptstr);
while ( TRUE )
{
if ( NULL == (line = readLongString(stdin)))
{
if ( feof(stdin) )
{
/* end of the input file, we're done */
exit(0);
}
}
else if(line[0] == '\0')
{
/* do nothing */
}
else
{
/* line is added to history list, and freed from there */
/* copyLine is sent to pipeline, and freed from there */
/* jobs need their own copy of the command_line */
char* copyLine = newstr(line);
/* We got a line, send it off to the pipeline cracker and
* launch it
*/
pl = crack_pipeline(copyLine);
if(pl != NULL)
{
addCommandToHistory(line);
runPipeline(pl);
}
free_pipeline(pl);
lineno++; /* readLongString trims newlines, so increment it manually */
}
fflush(stdout);
//tcsetpgrp(STDIN_FILENO, getpgid(0));
prompt(promptstr);
}
return 0;
}
