aac_afh.c: compute bitrate and store it in the new fields of struct audio format
authorAndre Noll <maan@systemlinux.org>
Sat, 24 Mar 2007 17:16:17 +0000 (18:16 +0100)
committerAndre Noll <maan@systemlinux.org>
Sat, 24 Mar 2007 17:16:17 +0000 (18:16 +0100)
Also, add this info in afi->info_string

aac_afh.c

index bf402f0..13e9c5d 100644 (file)
--- 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: