From: Andre Noll <maan@systemlinux.org>
Date: Sat, 24 Mar 2007 17:16:17 +0000 (+0100)
Subject: aac_afh.c: compute bitrate and store it in the new fields of struct audio format
X-Git-Tag: v0.2.16~7^2~6
X-Git-Url: http://git.tue.mpg.de/?a=commitdiff_plain;h=ebbbe8480434cba3011bba3a3e93f77ea7bd74a7;p=paraslash.git

aac_afh.c: compute bitrate and store it in the new fields of struct audio format

Also, add this info in afi->info_string
---

diff --git a/aac_afh.c b/aac_afh.c
index bf402f09..13e9c5d5 100644
--- a/aac_afh.c
+++ b/aac_afh.c
@@ -91,7 +91,7 @@ static long unsigned aac_set_chunk_tv(struct audio_format_info *afi,
 	PARA_INFO_LOG("%luHz, %fs (%lu x %lums)\n",
 		mp4ASC->samplingFrequency, ms / 1000,
 		afi->chunks_total, tv2ms(&afi->chunk_tv));
-	return ms / 1000;
+	return ms < 1000? -E_MP4ASC : ms / 1000;
 }
 
 /*
@@ -116,10 +116,14 @@ static int aac_get_file_info(char *map, off_t numbytes,
 	ret = -E_AACDEC_INIT;
 	if (NeAACDecInit(handle, map + skip, decoder_len, &rate, &channels))
 		goto out;
+	if (!channels)
+		goto out;
 	PARA_INFO_LOG("rate: %lu, channels: %d\n", rate, channels);
 	ret = -E_MP4ASC;
 	if (NeAACDecAudioSpecificConfig(map + skip, numbytes - skip, &mp4ASC))
 		goto out;
+	if (!mp4ASC.samplingFrequency)
+		goto out;
 	ret = aac_compute_chunk_table(afi, map, numbytes);
 	if (ret < 0)
 		goto out;
@@ -131,11 +135,18 @@ static int aac_get_file_info(char *map, off_t numbytes,
 	afi->chunk_table[0] = ret;
 	for (i = 1; i<= afi->chunks_total; i++)
 		afi->chunk_table[i] += ret;
-	sprintf(afi->info_string, "audio_file_info1:%lu x %lums\n"
+	afi->channels = channels;
+	afi->frequency = rate;
+	ret = (afi->chunk_table[afi->chunks_total] - afi->chunk_table[0]) * 8; /* bits */
+	ret += (channels * afi->seconds_total * 500); /* avoid rounding error */
+	afi->bitrate = ret / (channels * afi->seconds_total * 1000);
+	sprintf(afi->info_string, "audio_file_info1:%lu x %lums, "
+		"%uHz, %d channel%s, %ukb/s\n"
 		"audio_file_info2:\n"
 		"audio_file_info3:\n",
-		afi->chunks_total,
-		tv2ms(&afi->chunk_tv));
+		afi->chunks_total, tv2ms(&afi->chunk_tv),
+		afi->frequency, channels, channels == 1? "" : "s", afi->bitrate
+	);
 	tv_scale(20, &afi->chunk_tv, &afi->eof_tv);
 	ret = 1;
 out: