net.c: Improve documentation of struct crypt_data.

[paraslash.git] / vss.c

diff --git a/vss.c b/vss.c
index cb2d16c8d0c84843de9f5be213ed09b752aee890..c15fbd7e6898537f2c9e6a26ee067c61ab7455da 100644 (file)
--- a/vss.c
+++ b/vss.c
@@ -1,19 +1,7 @@
 /*
  * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.org>
  *
- *     This program is free software; you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation; either version 2 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
  */
 
 /** \file vss.c the virtual streaming system
@@ -158,6 +146,10 @@ void vss_init(void)
 {
        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);
@@ -166,7 +158,7 @@ void vss_init(void)
                        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);
@@ -179,7 +171,7 @@ void vss_init(void)
                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);
        }
 }
@@ -275,9 +267,10 @@ static void vss_get_audio_file(void)
                }
                mmd->size = file_status.st_size;
                mmd->mtime = file_status.st_mtime;
-               map = para_mmap(file_status.st_size, PROT_READ, MAP_PRIVATE,
+               map = para_mmap(mmd->size, PROT_READ, MAP_PRIVATE,
                        audio_file, 0);
                strcpy(mmd->filename, sl[i]);
+               mmd->afi.header_len = 0; /* default: no header */
                if (update_mmd() < 0) { /* invalid file */
                        close(audio_file);
                        munmap(map, mmd->size);
@@ -384,8 +377,6 @@ static void vss_eof(void)
        mmd->afi.seconds_total = 0;
        free(mmd->afi.chunk_table);
        mmd->afi.chunk_table = NULL;
-       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);
@@ -409,12 +400,12 @@ static void vss_eof(void)
  * treamtment.
  *
  */
-char *vss_get_header(int *header_len)
+char *vss_get_header(size_t *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;
 }
 
 /**
@@ -504,6 +495,32 @@ again:
        return ret;
 }
 
+static void get_chunk(long unsigned chunk_num, char **buf, size_t *len)
+{
+       size_t pos = mmd->afi.chunk_table[chunk_num];
+       *buf = map + pos;
+       *len = mmd->afi.chunk_table[chunk_num + 1] - pos;
+}
+
+/**
+ * Get the data of the given chunk.
+ *
+ * \param chunk_num The number of the desired chunk.
+ * \param buf Chunk data.
+ * \param len Chunk length in bytes.
+ *
+ * \return Positive on success, negative on errors.
+ */
+int vss_get_chunk(long unsigned chunk_num, char **buf, size_t *len)
+{
+       if (mmd->audio_format < 0 || !map || !vss_playing())
+               return -E_CHUNK;
+       if (chunk_num >= mmd->afi.chunks_total)
+               return -E_CHUNK;
+       get_chunk(chunk_num, buf, len);
+       return 1;
+}
+
 /**
  * main sending function
  *
@@ -517,7 +534,6 @@ void vss_send_chunk(void)
 {
        int i;
        struct audio_format_handler *af;
-       ssize_t pos, len;
        struct timeval now, due;
 
        if (mmd->audio_format < 0 || !map || !vss_playing())
@@ -537,8 +553,6 @@ void vss_send_chunk(void)
                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.
@@ -550,9 +564,12 @@ void vss_send_chunk(void)
                mmd->offset = tv2ms(&tmp);
                mmd->events++;
        }
-       for (i = 0; senders[i].name; i++)
-               senders[i].send(mmd->current_chunk, mmd->chunks_sent,
-                       map + pos, len);
+       for (i = 0; senders[i].name; i++) {
+               char *buf;
+               size_t len;
+               get_chunk(mmd->current_chunk, &buf, &len);
+               senders[i].send(mmd->current_chunk, mmd->chunks_sent, buf, len);
+       }
        mmd->new_vss_status_flags |= VSS_PLAYING;
        mmd->chunks_sent++;
        mmd->current_chunk++;