btr: Rename btr_bytes_pending() and make it public.
[paraslash.git] / vss.c
diff --git a/vss.c b/vss.c
index babcd24..1a038f0 100644 (file)
--- a/vss.c
+++ b/vss.c
@@ -11,7 +11,9 @@
  * senders.
  */
 
  * senders.
  */
 
+#include <regex.h>
 #include <dirent.h>
 #include <dirent.h>
+#include <osl.h>
 
 #include "para.h"
 #include "error.h"
 
 #include "para.h"
 #include "error.h"
@@ -121,6 +123,8 @@ struct fec_group {
        uint32_t num_chunks;
        /** When the first chunk was sent. */
        struct timeval start;
        uint32_t num_chunks;
        /** When the first chunk was sent. */
        struct timeval start;
+       /** The duration of the full group. */
+       struct timeval duration;
        /** The group duration divided by the number of slices. */
        struct timeval slice_duration;
        /** Group contains the audio file header that occupies that many slices. */
        /** The group duration divided by the number of slices. */
        struct timeval slice_duration;
        /** Group contains the audio file header that occupies that many slices. */
@@ -232,15 +236,16 @@ static int num_slices(long unsigned bytes, struct fec_client *fc, uint8_t *resul
        return 1;
 }
 
        return 1;
 }
 
-static void set_slice_duration(struct fec_client *fc, struct fec_group *g)
+/* set group start and group duration */
+static void set_group_timing(struct fec_client *fc, struct fec_group *g)
 {
 {
-       struct timeval group_duration, *chunk_tv = vss_chunk_time();
+       struct timeval *chunk_tv = vss_chunk_time();
 
 
-       tv_scale(g->num_chunks, chunk_tv, &group_duration);
+       tv_scale(g->num_chunks, chunk_tv, &g->duration);
        tv_divide(fc->fcp->slices_per_group + fc->num_extra_slices,
        tv_divide(fc->fcp->slices_per_group + fc->num_extra_slices,
-               &group_duration, &g->slice_duration);
+               &g->duration, &g->slice_duration);
        PARA_DEBUG_LOG("durations (group/chunk/slice): %lu/%lu/%lu\n",
        PARA_DEBUG_LOG("durations (group/chunk/slice): %lu/%lu/%lu\n",
-               tv2ms(&group_duration), tv2ms(chunk_tv), tv2ms(&g->slice_duration));
+               tv2ms(&g->duration), tv2ms(chunk_tv), tv2ms(&g->slice_duration));
 }
 
 static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
 }
 
 static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
@@ -248,46 +253,51 @@ static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
        int ret, i, k, data_slices;
        size_t len;
        const char *buf, *start_buf;
        int ret, i, k, data_slices;
        size_t len;
        const char *buf, *start_buf;
-       struct timeval tmp, *chunk_tv = vss_chunk_time();
        struct fec_group *g = &fc->group;
        unsigned slice_bytes = fc->fcp->max_slice_bytes - FEC_HEADER_SIZE;
        uint32_t max_data_size;
 
        struct fec_group *g = &fc->group;
        unsigned slice_bytes = fc->fcp->max_slice_bytes - FEC_HEADER_SIZE;
        uint32_t max_data_size;
 
-       assert(chunk_tv);
-       k = fc->fcp->data_slices_per_group + fc->num_extra_slices;
        if (fc->first_stream_chunk < 0) {
        if (fc->first_stream_chunk < 0) {
-               uint32_t largest = afh_get_largest_chunk_size(&mmd->afd.afhi)
-                       + vsst->header_len;
-               uint8_t needed, want;
+               uint8_t hs, ds; /* needed header/data slices */
+               uint8_t rs = fc->fcp->slices_per_group
+                       - fc->fcp->data_slices_per_group; /* redundant slices */
+               int n;
 
 
-               ret = num_slices(largest, fc, &needed);
+               ret = num_slices(vsst->header_len, fc, &hs);
+               if (ret < 0)
+                       return ret;
+               ret = num_slices(afh_get_largest_chunk_size(&mmd->afd.afhi),
+                       fc, &ds);
+               if (ret < 0)
+                       return ret;
+               k = (int)hs + ds;
+               if (k > 255)
+                       return -E_BAD_CT;
+               if (k < fc->fcp->data_slices_per_group)
+                       k = fc->fcp->data_slices_per_group;
+               n = k + rs;
+               fc->num_extra_slices = k - fc->fcp->data_slices_per_group;
+               PARA_NOTICE_LOG("fec parms %d:%d:%d (%d extra slices)\n",
+                       slice_bytes, k, n, fc->num_extra_slices);
+               fec_free(fc->parms);
+               fc->src_data = para_realloc(fc->src_data, k * sizeof(char *));
+               ret = fec_new(k, n, &fc->parms);
                if (ret < 0)
                        return ret;
                if (ret < 0)
                        return ret;
-               if (needed > fc->fcp->data_slices_per_group)
-                       PARA_WARNING_LOG("fec parms insufficient for this audio file\n");
-               want = PARA_MAX(needed, fc->fcp->data_slices_per_group);
-               if (want != k) {
-                       fec_free(fc->parms);
-                       fc->src_data = para_realloc(fc->src_data, want * sizeof(char *));
-                       ret = fec_new(want, want + fc->fcp->slices_per_group
-                               - fc->fcp->data_slices_per_group, &fc->parms);
-                       if (ret < 0)
-                               return ret;
-                       k = want;
-                       fc->num_extra_slices = 0;
-                       if (k > fc->fcp->data_slices_per_group) {
-                               fc->num_extra_slices = k - fc->fcp->data_slices_per_group;
-                               PARA_NOTICE_LOG("using %d extra slices\n",
-                                       fc->num_extra_slices);
-                       }
-               }
                fc->stream_start = *now;
                fc->first_stream_chunk = mmd->current_chunk;
                g->first_chunk = mmd->current_chunk;
                g->num = 0;
                fc->stream_start = *now;
                fc->first_stream_chunk = mmd->current_chunk;
                g->first_chunk = mmd->current_chunk;
                g->num = 0;
+               g->start = *now;
        } else {
        } else {
-               /* use duration of the previous group for the timing of this group */
-               set_slice_duration(fc, g);
+               /*
+                * Start and duration of this group depend only on the previous
+                * group. Compute the new group start as g->start += g->duration.
+                */
+               struct timeval tmp = g->start;
+               tv_add(&tmp, &g->duration, &g->start);
+               k = fc->fcp->data_slices_per_group + fc->num_extra_slices;
+               set_group_timing(fc, g);
                g->first_chunk += g->num_chunks;
                g->num++;
        }
                g->first_chunk += g->num_chunks;
                g->num++;
        }
@@ -315,7 +325,7 @@ static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
        assert(g->num_chunks);
        fc->current_slice_num = 0;
        if (g->num == 0)
        assert(g->num_chunks);
        fc->current_slice_num = 0;
        if (g->num == 0)
-               set_slice_duration(fc, g);
+               set_group_timing(fc, g);
 
        /* setup header slices */
        buf = vsst->header_buf;
 
        /* setup header slices */
        buf = vsst->header_buf;
@@ -353,9 +363,6 @@ static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
                g->first_chunk + g->num_chunks - 1,
                g->num_header_slices, data_slices
        );
                g->first_chunk + g->num_chunks - 1,
                g->num_header_slices, data_slices
        );
-       /* set group start */
-       tv_scale(g->first_chunk - fc->first_stream_chunk, chunk_tv, &tmp);
-       tv_add(&fc->stream_start, &tmp, &g->start);
        return 1;
 }
 
        return 1;
 }
 
@@ -493,8 +500,7 @@ static void compute_slice_timeout(struct timeval *timeout)
 static void set_eof_barrier(struct vss_task *vsst)
 {
        struct fec_client *fc;
 static void set_eof_barrier(struct vss_task *vsst)
 {
        struct fec_client *fc;
-       struct timeval timeout = mmd->afd.afhi.eof_tv,
-               *chunk_tv = vss_chunk_time();
+       struct timeval timeout = {1, 0}, *chunk_tv = vss_chunk_time();
 
        if (!chunk_tv)
                goto out;
 
        if (!chunk_tv)
                goto out;
@@ -630,16 +636,12 @@ static void vss_eof(struct vss_task *vsst)
        para_munmap(vsst->map, mmd->size);
        vsst->map = NULL;
        mmd->chunks_sent = 0;
        para_munmap(vsst->map, mmd->size);
        vsst->map = NULL;
        mmd->chunks_sent = 0;
-       mmd->offset = 0;
+       //mmd->offset = 0;
        mmd->afd.afhi.seconds_total = 0;
        mmd->afd.afhi.chunk_tv.tv_sec = 0;
        mmd->afd.afhi.chunk_tv.tv_usec = 0;
        free(mmd->afd.afhi.chunk_table);
        mmd->afd.afhi.chunk_table = NULL;
        mmd->afd.afhi.seconds_total = 0;
        mmd->afd.afhi.chunk_tv.tv_sec = 0;
        mmd->afd.afhi.chunk_tv.tv_usec = 0;
        free(mmd->afd.afhi.chunk_table);
        mmd->afd.afhi.chunk_table = NULL;
-       free(mmd->afd.afhi.info_string);
-       mmd->afd.afhi.info_string = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_AUDIO_FILE_INFO],
-               status_item_list[SI_TAGINFO1], status_item_list[SI_TAGINFO2]);
-       make_empty_status_items(mmd->afd.verbose_ls_output);
        mmd->mtime = 0;
        mmd->size = 0;
        mmd->events++;
        mmd->mtime = 0;
        mmd->size = 0;
        mmd->events++;
@@ -675,6 +677,13 @@ static int need_to_request_new_audio_file(struct vss_task *vsst)
        return 1;
 }
 
        return 1;
 }
 
+static void set_mmd_offset(void)
+{
+       struct timeval offset;
+       tv_scale(mmd->current_chunk, &mmd->afd.afhi.chunk_tv, &offset);
+       mmd->offset = tv2ms(&offset);
+}
+
 /**
  * Compute the timeout for the main select-loop of the scheduler.
  *
 /**
  * Compute the timeout for the main select-loop of the scheduler.
  *
@@ -719,6 +728,7 @@ static void vss_pre_select(struct sched *s, struct task *t)
                mmd->chunks_sent = 0;
                mmd->current_chunk = mmd->repos_request;
                mmd->new_vss_status_flags &= ~VSS_REPOS;
                mmd->chunks_sent = 0;
                mmd->current_chunk = mmd->repos_request;
                mmd->new_vss_status_flags &= ~VSS_REPOS;
+               set_mmd_offset();
        }
        if (need_to_request_new_audio_file(vsst)) {
                PARA_DEBUG_LOG("ready and playing, but no audio file\n");
        }
        if (need_to_request_new_audio_file(vsst)) {
                PARA_DEBUG_LOG("ready and playing, but no audio file\n");
@@ -788,7 +798,6 @@ static void recv_afs_result(struct vss_task *vsst)
        if (passed_fd < 0)
                goto err;
        shmid = afs_data;
        if (passed_fd < 0)
                goto err;
        shmid = afs_data;
-       free(mmd->afd.afhi.info_string);
        ret = load_afd(shmid, &mmd->afd);
        if (ret < 0)
                goto err;
        ret = load_afd(shmid, &mmd->afd);
        if (ret < 0)
                goto err;
@@ -874,11 +883,9 @@ static void vss_send(struct vss_task *vsst)
                size_t len;
 
                if (!mmd->chunks_sent) {
                size_t len;
 
                if (!mmd->chunks_sent) {
-                       struct timeval tmp;
                        mmd->stream_start = *now;
                        mmd->stream_start = *now;
-                       tv_scale(mmd->current_chunk, &mmd->afd.afhi.chunk_tv, &tmp);
-                       mmd->offset = tv2ms(&tmp);
                        mmd->events++;
                        mmd->events++;
+                       set_mmd_offset();
                }
                /*
                 * We call the send function also in case of empty chunks as
                }
                /*
                 * We call the send function also in case of empty chunks as
@@ -965,7 +972,6 @@ void init_vss_task(int afs_socket)
        free(hn);
        free(home);
        mmd->sender_cmd_data.cmd_num = -1;
        free(hn);
        free(home);
        mmd->sender_cmd_data.cmd_num = -1;
-       make_empty_status_items(mmd->afd.verbose_ls_output);
        if (conf.autoplay_given) {
                struct timeval tmp;
                mmd->vss_status_flags |= VSS_PLAYING;
        if (conf.autoplay_given) {
                struct timeval tmp;
                mmd->vss_status_flags |= VSS_PLAYING;