server: Store max chunk size in database.

[paraslash.git] / aft.c

diff --git a/aft.c b/aft.c
index 1756ec04ab5582edd97ab1b73bd2d777657495ec..4e2e1f8dbe2af69df7f5927a11687a236975c5a3 100644 (file)
--- a/aft.c
+++ b/aft.c
@@ -335,8 +335,8 @@ enum afhi_offsets {
        CHUNKS_TOTAL_OFFSET = 20,
        /** The length of the audio file header (4 bytes). */
        HEADER_LEN_OFFSET = 24,
-       /** Was: The start of the audio file header (4 bytes). */
-       AFHI_UNUSED2_OFFSET = 28,
+       /** Size of the largest chunk in bytes. (4 bytes). */
+       AFHI_MAX_CHUNK_SIZE_OFFSET = 28,
        /** The seconds part of the chunk time (4 bytes). */
        CHUNK_TV_TV_SEC_OFFSET = 32,
        /** The microseconds part of the chunk time (4 bytes). */
@@ -376,7 +376,7 @@ static void save_afhi(struct afh_info *afhi, char *buf)
        write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
        write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
        write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
-       write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
+       write_u32(buf + AFHI_MAX_CHUNK_SIZE_OFFSET, afhi->max_chunk_size);
        write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
        write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
        p = buf + AFHI_INFO_STRING_OFFSET;
@@ -398,6 +398,7 @@ static void load_afhi(const char *buf, struct afh_info *afhi)
        afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
        afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
        afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
+       afhi->max_chunk_size = read_u32(buf + AFHI_MAX_CHUNK_SIZE_OFFSET);
        afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
        afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
        afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
@@ -415,26 +416,12 @@ static unsigned sizeof_chunk_table(struct afh_info *afhi)
        return 4 * (afhi->chunks_total + 1);
 }
 
-static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
+static void save_chunk_table(struct afh_info *afhi, char *buf)
 {
-       int i;
-       uint32_t max = 0, old = 0;
+       uint32_t n;
 
-       for (i = 0; i <= afhi->chunks_total; i++) {
-               uint32_t val = afhi->chunk_table[i];
-               write_u32(buf + 4 * i, val);
-               /*
-                * If the first chunk is the header, do not consider it for the
-                * calculation of the largest chunk size.
-                */
-               if (i == 0 || (i == 1 && afhi->header_len > 0)) {
-                       old = val;
-                       continue;
-               }
-               max = PARA_MAX(max, val - old);
-               old = val;
-       }
-       return max;
+       for (n = 0; n <= afhi->chunks_total; n++)
+               write_u32(buf + 4 * n, afhi->chunk_table[n]);
 }
 
 static void load_chunk_table(struct afh_info *afhi, const struct osl_object *ct)
@@ -638,7 +625,13 @@ static int save_afd(struct audio_file_data *afd)
                goto err;
        buf = shm_afd;
        buf += sizeof(*afd);
-       afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
+       save_chunk_table(&afd->afhi, buf);
+       if (afd->afhi.max_chunk_size == 0) { /* v0.5.x on-disk afhi */
+               set_max_chunk_size(&afd->afhi);
+               PARA_NOTICE_LOG("max chunk size unset, re-add required\n");
+       } else
+               PARA_INFO_LOG("using max chunk size from afhi\n");
+       afd->max_chunk_size = afd->afhi.max_chunk_size;
        *(struct audio_file_data *)shm_afd = *afd;
        shm_detach(shm_afd);
        return shmid;
@@ -947,6 +940,8 @@ static int print_list_item(struct ls_data *d, struct ls_options *opts,
        WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n", tv2ms(&afhi->chunk_tv));
        WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%" PRIu32 "\n",
                afhi->chunks_total);
+       WRITE_STATUS_ITEM(b, SI_MAX_CHUNK_SIZE, "%" PRIu32 "\n",
+               afhi->max_chunk_size);
        WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
        WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
        WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);