X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=ogg_afh_common.c;h=3e36bdd5b1e9d3615695f975541bf69c0cc05093;hp=62cde3d465ab7c86a23d6c539b8a2b447d465f78;hb=62c0894fbb589dd45e69b7d9ef1fd152a9960d62;hpb=ee7fe52a4740edca5130ebb9c860bed987259acc

diff --git a/ogg_afh_common.c b/ogg_afh_common.c
index 62cde3d4..3e36bdd5 100644
--- a/ogg_afh_common.c
+++ b/ogg_afh_common.c
@@ -124,8 +124,9 @@ int oac_get_file_info(char *map, size_t numbytes, struct afh_info *afhi,
 	ogg_sync_state oss;
 	ogg_page op;
 	char *buf;
-	int ret, i, j, frames_per_chunk, ct_size;
-	long long unsigned num_frames = 0;
+	int ret, i, j, frames_per_chunk, ct_size, prev_pageno = 0;
+	long long unsigned granule_skip = 0, num_frames = 0;
+	int64_t granule = 0, prev_granule = 0;
 
 	ogg_sync_init(&oss);
 	ret = -E_OGG_SYNC;
@@ -145,8 +146,17 @@ int oac_get_file_info(char *map, size_t numbytes, struct afh_info *afhi,
 	oss.returned = 0;
 	oss.fill = numbytes;
 	/* count ogg pages and get duration of the file */
-	for (i = 0; ogg_sync_pageseek(&oss, &op) > 0; i++)
-		num_frames = ogg_page_granulepos(&op);
+	for (i = 0; ogg_sync_pageseek(&oss, &op) > 0; i++) {
+		int this_pageno = ogg_page_pageno(&op);
+		int64_t this_granule = ogg_page_granulepos(&op);
+		if (this_granule >= 0)
+			granule = this_granule;
+		if (i > 0 && this_pageno != prev_pageno + 1) /* hole */
+			granule_skip += granule - prev_granule;
+		prev_pageno = this_pageno;
+		prev_granule = granule;
+	}
+	num_frames = granule - granule_skip;
 	PARA_INFO_LOG("%d pages, %llu frames\n", i, num_frames);
 	ret = -E_OGG_EMPTY;
 	if (i == 0)
@@ -163,7 +173,7 @@ int oac_get_file_info(char *map, size_t numbytes, struct afh_info *afhi,
 	oss.returned = afhi->header_len;
 	oss.fill = numbytes;
 	for (j = 1; ogg_sync_pageseek(&oss, &op) > 0; /* nothing */) {
-		int granule = ogg_page_granulepos(&op);
+		granule = ogg_page_granulepos(&op);
 
 		while (granule >= (j + 1) * frames_per_chunk) {
 			j++;