/** \file vss.c the virtual streaming system
*
- * This contains the audio sending part of para_server which is independent of
- * the current audio format, audio file selector and of the activated senders.
+ * This contains the audio streaming code of para_server which is independent
+ * of the current audio format, audio file selector and of the activated
+ * senders.
*/
#include "server.h"
+#include <sys/mman.h> /* mmap */
#include <sys/time.h> /* gettimeofday */
#include "server.cmdline.h"
#include "afs.h"
extern struct misc_meta_data *mmd;
extern struct audio_file_selector selectors[];
extern struct sender senders[];
-static char *inbuf;
-static size_t inbuf_size;
-static FILE *audio_file = NULL;
+static int audio_file;
+static char *map;
#if 1
void mp3_init(struct audio_format_handler *);
{
int i;
char *hn = para_hostname(), *home = para_homedir();
+ long unsigned announce_time = conf.announce_time_arg > 0?
+ conf.announce_time_arg : 300,
+ autoplay_delay = conf.autoplay_delay_arg > 0?
+ conf.autoplay_delay_arg : 0;
PARA_DEBUG_LOG("supported audio formats: %s\n",
SUPPORTED_AUDIO_FORMATS);
afl[i].name);
afl[i].init(&afl[i]);
}
- ms2tv(conf.announce_time_arg, &announce_tv);
+ ms2tv(announce_time, &announce_tv);
PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&announce_tv));
for (i = 0; senders[i].name; i++) {
PARA_NOTICE_LOG("initializing %s sender\n", senders[i].name);
mmd->vss_status_flags |= VSS_PLAYING;
mmd->new_vss_status_flags |= VSS_PLAYING;
gettimeofday(&now, NULL);
- ms2tv(conf.autoplay_delay_arg, &tmp);
+ ms2tv(autoplay_delay, &tmp);
tv_add(&now, &tmp, &autoplay_barrier);
}
}
static int get_file_info(int i)
{
- return afl[i].get_file_info(audio_file, &mmd->afi);
+ return afl[i].get_file_info(map, mmd->size, &mmd->afi);
}
/**
FOR_EACH_AUDIO_FORMAT(i) {
if (i == omit)
continue;
- rewind(audio_file);
if (get_file_info(i) > 0)
return i;
- rewind(audio_file);
}
return -E_AUDIO_FORMAT;
}
static int update_mmd(void)
{
int i;
- struct stat file_status;
i = guess_audio_format(mmd->filename);
if (i < 0 || get_file_info(i) < 0)
mmd->chunks_sent = 0;
mmd->current_chunk = 0;
mmd->offset = 0;
- if (fstat(fileno(audio_file), &file_status) == -1)
- return -E_FSTAT;
- mmd->size = file_status.st_size;
- mmd->mtime = file_status.st_mtime;
mmd->events++;
- PARA_NOTICE_LOG("next audio file: %s\n", mmd->filename);
return 1;
}
-static void get_song(void)
+static void vss_get_audio_file(void)
{
char **sl = selectors[mmd->selector_num].get_audio_file_list(10);
int i;
+ struct stat file_status;
if (!sl)
goto err_out;
PARA_INFO_LOG("trying %s\n", sl[i]);
if (strlen(sl[i]) >= _POSIX_PATH_MAX)
continue;
- audio_file = fopen(sl[i], "r");
- if (!audio_file)
+ audio_file = open(sl[i], O_RDONLY);
+ if (audio_file < 0)
continue;
+ if (fstat(audio_file, &file_status) == -1 ||
+ !file_status.st_size) {
+ close(audio_file);
+ continue;
+ }
+ mmd->size = file_status.st_size;
+ mmd->mtime = file_status.st_mtime;
+ map = para_mmap(mmd->size, PROT_READ, MAP_PRIVATE,
+ audio_file, 0);
strcpy(mmd->filename, sl[i]);
- if (update_mmd() < 0) {
- fclose(audio_file);
- audio_file = NULL;
+ mmd->afi.header_len = 0; /* default: no header */
+ if (update_mmd() < 0) { /* invalid file */
+ close(audio_file);
+ munmap(map, mmd->size);
+ map = NULL;
continue;
}
mmd->num_played++;
if (selectors[mmd->selector_num].update_audio_file)
selectors[mmd->selector_num].update_audio_file(sl[i]);
- PARA_DEBUG_LOG("%s", "success\n");
+ PARA_NOTICE_LOG("next audio file: %s\n", mmd->filename);
mmd->new_vss_status_flags &= (~VSS_NEXT);
gettimeofday(&now, NULL);
tv_add(&now, &announce_tv, &data_send_barrier);
-
goto free;
}
- PARA_ERROR_LOG("%s", "no valid files found\n");
err_out:
+ PARA_ERROR_LOG("%s", "no valid files found\n");
mmd->new_vss_status_flags = VSS_NEXT;
free:
if (sl) {
if (chk_barrier("data send", &now, &data_send_barrier,
&the_timeout, 1) < 0)
return &the_timeout;
- if (mmd->audio_format < 0 || !vss_playing() || !audio_file)
+ if (mmd->audio_format < 0 || !vss_playing() || !map)
return NULL;
vss_next_chunk_time(&next_chunk);
if (chk_barrier(afl[mmd->audio_format].name, &now, &next_chunk,
return &the_timeout;
}
-static void vss_eof(struct audio_format_handler *af)
+static void vss_eof(void)
{
struct timeval now;
int i;
char *tmp;
- if (!af || !audio_file) {
+ if (!map) {
for (i = 0; senders[i].name; i++)
senders[i].shutdown_clients();
return;
}
gettimeofday(&now, NULL);
tv_add(&mmd->afi.eof_tv, &now, &eof_barrier);
- fclose(audio_file);
- audio_file = NULL;
+ munmap(map, mmd->size);
+ map = NULL;
+ close(audio_file);
mmd->audio_format = -1;
- af = NULL;
mmd->chunks_sent = 0;
mmd->offset = 0;
mmd->afi.seconds_total = 0;
free(mmd->afi.chunk_table);
mmd->afi.chunk_table = NULL;
- PARA_ERROR_LOG("freeing header %p\n", mmd->afi.header);
- free(mmd->afi.header);
- mmd->afi.header = NULL;
tmp = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_AUDIO_INFO1],
status_item_list[SI_AUDIO_INFO2], status_item_list[SI_AUDIO_INFO3]);
strcpy(mmd->afi.info_string, tmp);
* treamtment.
*
*/
-char *vss_get_header(int *header_len)
+char *vss_get_header(unsigned *header_len)
{
- if (mmd->audio_format < 0)
+ if (mmd->audio_format < 0 || !map || !mmd->afi.header_len)
return NULL;
*header_len = mmd->afi.header_len;
- return mmd->afi.header;
+ return map + mmd->afi.header_offset;
}
/**
for (i = 0; senders[i].name; i++)
senders[i].shutdown_clients();
if (vss_next() && af) {
- vss_eof(af);
+ vss_eof();
return vss_compute_timeout();
}
if (vss_paused() || vss_repos()) {
mmd->current_chunk = mmd->repos_request;
}
ret = vss_compute_timeout();
- if (!ret && !audio_file && vss_playing() &&
+ if (!ret && !map && vss_playing() &&
!(mmd->new_vss_status_flags & VSS_NOMORE)) {
PARA_DEBUG_LOG("%s", "ready and playing, but no audio file\n");
- get_song();
+ vss_get_audio_file();
goto again;
}
return ret;
}
-/**
- * read a chunk of data from the current audio file
- *
- * \return The length of the chunk on success, zero on end of file, negative on
- * errors. Note: If the current chunk is of length zero, but the end of the
- * file is not yet reached, this function returns -E_EMPTY_CHUNK.
- */
-ssize_t vss_read_chunk(void)
-{
- ssize_t len;
- size_t pos;
- int ret;
- long unsigned cc = mmd->current_chunk;
-
- if (cc >= mmd->afi.chunks_total) /* eof */
- return 0;
- len = mmd->afi.chunk_table[cc + 1] - mmd->afi.chunk_table[cc];
- if (!len) /* nothing to send for this run */
- return -E_EMPTY_CHUNK;
- pos = mmd->afi.chunk_table[cc];
- if (inbuf_size < len) {
- PARA_INFO_LOG("increasing inbuf for chunk #%lu/%lu to %zu bytes\n",
- cc, mmd->afi.chunks_total, len);
- inbuf = para_realloc(inbuf, len);
- inbuf_size = len;
- }
- ret = para_fseek(audio_file, pos, SEEK_SET);
- if (ret < 0)
- return ret;
- return para_fread(inbuf, len, 1, audio_file);
-}
-
/**
* main sending function
*
{
int i;
struct audio_format_handler *af;
- ssize_t ret;
+ ssize_t pos;
+ size_t len;
struct timeval now, due;
- if (mmd->audio_format < 0 || !audio_file || !vss_playing())
+ if (mmd->audio_format < 0 || !map || !vss_playing())
return;
af = &afl[mmd->audio_format];
gettimeofday(&now, NULL);
if (chk_barrier("data send", &now, &data_send_barrier,
&due, 1) < 0)
return;
- ret= vss_read_chunk();
mmd->new_vss_status_flags &= ~VSS_REPOS;
- if (!ret || (ret < 0 && ret != -E_EMPTY_CHUNK)) {
- if (ret < 0) {
- mmd->new_vss_status_flags = VSS_NEXT;
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
- } else
- mmd->new_vss_status_flags |= VSS_NEXT;
- vss_eof(af);
- return;
+ if (mmd->current_chunk >= mmd->afi.chunks_total) { /* eof */
+ mmd->new_vss_status_flags |= VSS_NEXT;
+ return vss_eof();
}
+ pos = mmd->afi.chunk_table[mmd->current_chunk];
+ len = mmd->afi.chunk_table[mmd->current_chunk + 1] - pos;
/*
* We call the send function also in case of empty chunks as they
* might have still some data queued which can be sent in this case.
*/
- if (ret < 0)
- ret = 0;
if (!mmd->chunks_sent) {
struct timeval tmp;
gettimeofday(&mmd->stream_start, NULL);
mmd->events++;
}
for (i = 0; senders[i].name; i++)
- senders[i].send(mmd->current_chunk, mmd->chunks_sent, inbuf, ret);
+ senders[i].send(mmd->current_chunk, mmd->chunks_sent,
+ map + pos, len);
mmd->new_vss_status_flags |= VSS_PLAYING;
mmd->chunks_sent++;
mmd->current_chunk++;
projects / paraslash.git / blobdiff