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#include <signal.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "polyp.h"
#include "polyp-error.h"
#include "mainloop.h"
#include "mainloop-signal.h"
static struct pa_context *context = NULL;
static struct pa_stream *stream = NULL;
static struct pa_mainloop_api *mainloop_api = NULL;
static void *buffer = NULL;
static size_t buffer_length = 0, buffer_index = 0;
static void* stdin_source = NULL;
static void quit(int ret) {
assert(mainloop_api);
mainloop_api->quit(mainloop_api, ret);
}
static void context_die_callback(struct pa_context *c, void *userdata) {
assert(c);
fprintf(stderr, "Connection to server shut down, exiting.\n");
quit(1);
}
static void stream_die_callback(struct pa_stream *s, void *userdata) {
assert(s);
fprintf(stderr, "Stream deleted, exiting.\n");
quit(1);
}
static void do_write(size_t length) {
size_t l;
assert(length);
if (!buffer || !buffer_length)
return;
l = length;
if (l > buffer_length)
l = buffer_length;
pa_stream_write(stream, buffer+buffer_index, l);
buffer_length -= l;
buffer_index += l;
if (!buffer_length) {
free(buffer);
buffer = NULL;
buffer_index = buffer_length = 0;
}
}
static void stream_write_callback(struct pa_stream *s, size_t length, void *userdata) {
assert(s && length);
if (stdin_source)
mainloop_api->enable_io(mainloop_api, stdin_source, PA_MAINLOOP_API_IO_EVENT_INPUT);
if (!buffer)
return;
do_write(length);
}
static void stream_complete_callback(struct pa_stream*s, int success, void *userdata) {
assert(s);
if (!success) {
fprintf(stderr, "Stream creation failed: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
quit(1);
return;
}
fprintf(stderr, "Stream created.\n");
}
static void context_complete_callback(struct pa_context *c, int success, void *userdata) {
static const struct pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
assert(c && !stream);
if (!success) {
fprintf(stderr, "Connection failed: %s\n", pa_strerror(pa_context_errno(c)));
goto fail;
}
fprintf(stderr, "Connection established.\n");
if (!(stream = pa_stream_new(c, PA_STREAM_PLAYBACK, NULL, "pacat", &ss, NULL, stream_complete_callback, NULL))) {
fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
goto fail;
}
pa_stream_set_die_callback(stream, stream_die_callback, NULL);
pa_stream_set_write_callback(stream, stream_write_callback, NULL);
return;
fail:
quit(1);
}
static void context_drain_complete(struct pa_context*c, void *userdata) {
quit(0);
}
static void stdin_callback(struct pa_mainloop_api*a, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
size_t l, w = 0;
ssize_t r;
assert(a == mainloop_api && id && fd == STDIN_FILENO && events == PA_MAINLOOP_API_IO_EVENT_INPUT && stdin_source == id);
if (buffer) {
mainloop_api->enable_io(mainloop_api, stdin_source, PA_MAINLOOP_API_IO_EVENT_NULL);
return;
}
if (!stream || !pa_stream_is_ready(stream) || !(l = w = pa_stream_writable_size(stream)))
l = 4096;
buffer = malloc(l);
assert(buffer);
if ((r = read(fd, buffer, l)) <= 0) {
if (r == 0) {
fprintf(stderr, "Got EOF.\n");
if (pa_context_drain(context, context_drain_complete, NULL) < 0)
quit(0);
else
fprintf(stderr, "Draining connection to server.\n");
} else {
fprintf(stderr, "read() failed: %s\n", strerror(errno));
quit(1);
}
mainloop_api->cancel_io(mainloop_api, stdin_source);
stdin_source = NULL;
return;
}
buffer_length = r;
buffer_index = 0;
if (w)
do_write(w);
}
static void exit_signal_callback(void *id, int sig, void *userdata) {
fprintf(stderr, "Got SIGINT, exiting.\n");
quit(0);
}
int main(int argc, char *argv[]) {
struct pa_mainloop* m;
int ret = 1, r;
if (!(m = pa_mainloop_new())) {
fprintf(stderr, "pa_mainloop_new() failed.\n");
goto quit;
}
mainloop_api = pa_mainloop_get_api(m);
r = pa_signal_init(mainloop_api);
assert(r == 0);
pa_signal_register(SIGINT, exit_signal_callback, NULL);
signal(SIGPIPE, SIG_IGN);
if (!(stdin_source = mainloop_api->source_io(mainloop_api, STDIN_FILENO, PA_MAINLOOP_API_IO_EVENT_INPUT, stdin_callback, NULL))) {
fprintf(stderr, "source_io() failed.\n");
goto quit;
}
if (!(context = pa_context_new(mainloop_api, argv[0]))) {
fprintf(stderr, "pa_context_new() failed.\n");
goto quit;
}
if (pa_context_connect(context, NULL, context_complete_callback, NULL) < 0) {
fprintf(stderr, "pa_context_connext() failed.\n");
goto quit;
}
pa_context_set_die_callback(context, context_die_callback, NULL);
if (pa_mainloop_run(m, &ret) < 0) {
fprintf(stderr, "pa_mainloop_run() failed.\n");
goto quit;
}
quit:
if (stream)
pa_stream_free(stream);
if (context)
pa_context_free(context);
if (m)
pa_mainloop_free(m);
if (buffer)
free(buffer);
return ret;
}
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