diff options
author | Lennart Poettering <lennart@poettering.net> | 2004-06-14 22:47:29 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2004-06-14 22:47:29 +0000 |
commit | bfcde99a8f7fe31be504e1d55c4a065c760bb533 (patch) | |
tree | eac63cfa68abfaeb26fa8eddf2fffe04edf4bfaf /src/module-pipe-sink.c | |
parent | f78e9b68cbc45015af05db497d1547c0e02d2751 (diff) |
rename some more
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@14 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/module-pipe-sink.c')
-rw-r--r-- | src/module-pipe-sink.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/module-pipe-sink.c b/src/module-pipe-sink.c new file mode 100644 index 00000000..e63a7a86 --- /dev/null +++ b/src/module-pipe-sink.c @@ -0,0 +1,156 @@ +#include <stdlib.h> +#include <sys/stat.h> +#include <stdio.h> +#include <assert.h> +#include <errno.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <limits.h> + +#include "iochannel.h" +#include "sink.h" +#include "module.h" + +struct userdata { + char *filename; + + struct sink *sink; + struct iochannel *io; + struct core *core; + struct mainloop_source *mainloop_source; + + struct memchunk memchunk; +}; + +static void do_write(struct userdata *u) { + ssize_t r; + assert(u); + + mainloop_source_enable(u->mainloop_source, 0); + + if (!iochannel_is_writable(u->io)) + return; + + if (!u->memchunk.length) + if (sink_render(u->sink, PIPE_BUF, &u->memchunk) < 0) + return; + + assert(u->memchunk.memblock && u->memchunk.length); + + if ((r = iochannel_write(u->io, u->memchunk.memblock->data + u->memchunk.index, u->memchunk.length)) < 0) { + fprintf(stderr, "write() failed: %s\n", strerror(errno)); + return; + } + + u->memchunk.index += r; + u->memchunk.length -= r; + + if (u->memchunk.length <= 0) { + memblock_unref(u->memchunk.memblock); + u->memchunk.memblock = NULL; + } +} + +static void notify_callback(struct sink*s, void *userdata) { + struct userdata *u = userdata; + assert(u); + + if (iochannel_is_writable(u->io)) + mainloop_source_enable(u->mainloop_source, 1); +} + +static void prepare_callback(struct mainloop_source *src, void *userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); +} + +static void io_callback(struct iochannel *io, void*userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); +} + +int module_init(struct core *c, struct module*m) { + struct userdata *u = NULL; + struct stat st; + char *p; + int fd = -1; + const static struct sample_spec ss = { + .format = SAMPLE_S16NE, + .rate = 44100, + .channels = 2, + }; + assert(c && m); + + mkfifo((p = m->argument ? m->argument : "/tmp/musicfifo"), 0777); + + if ((fd = open(p, O_RDWR)) < 0) { + fprintf(stderr, "open('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + if (fstat(fd, &st) < 0) { + fprintf(stderr, "fstat('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + if (!S_ISFIFO(st.st_mode)) { + fprintf(stderr, "'%s' is not a FIFO\n", p); + goto fail; + } + + + u = malloc(sizeof(struct userdata)); + assert(u); + + u->filename = strdup(p); + assert(u->filename); + u->core = c; + u->sink = sink_new(c, "fifo", &ss); + assert(u->sink); + sink_set_notify_callback(u->sink, notify_callback, u); + + u->io = iochannel_new(c->mainloop, -1, fd); + assert(u->io); + iochannel_set_callback(u->io, io_callback, u); + + u->memchunk.memblock = NULL; + u->memchunk.length = 0; + + u->mainloop_source = mainloop_source_new_fixed(c->mainloop, prepare_callback, u); + assert(u->mainloop_source); + mainloop_source_enable(u->mainloop_source, 0); + + m->userdata = u; + + return 0; + +fail: + if (fd >= 0) + close(fd); + + return -1; +} + +void module_done(struct core *c, struct module*m) { + struct userdata *u; + assert(c && m); + + u = m->userdata; + assert(u); + + if (u->memchunk.memblock) + memblock_unref(u->memchunk.memblock); + + sink_free(u->sink); + iochannel_free(u->io); + mainloop_source_free(u->mainloop_source); + + assert(u->filename); + unlink(u->filename); + free(u->filename); + + free(u); +} |