From 4c6a8e3ca507fb9ca407cd11c55714f213f25c8a Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Wed, 11 Nov 2009 21:34:55 +0100
Subject: decoder/vorbis: initialize before entering the loop
Call decoder_initialize() before entering the loop. We don't need to
call ov_read() before ov_info(). When the stream number changes,
check if the audio format is still the same.
---
src/decoder/vorbis_plugin.c | 58 +++++++++++++++++++++++++++++----------------
1 file changed, 37 insertions(+), 21 deletions(-)
(limited to 'src/decoder')
diff --git a/src/decoder/vorbis_plugin.c b/src/decoder/vorbis_plugin.c
index e97522edc..901356fe5 100755
--- a/src/decoder/vorbis_plugin.c
+++ b/src/decoder/vorbis_plugin.c
@@ -271,6 +271,7 @@ vorbis_stream_decode(struct decoder *decoder,
ov_callbacks callbacks;
struct vorbis_decoder_data data;
struct audio_format audio_format;
+ float total_time;
int current_section;
int prev_section = -1;
long ret;
@@ -278,8 +279,7 @@ vorbis_stream_decode(struct decoder *decoder,
long bitRate = 0;
long test;
struct replay_gain_info *replay_gain_info = NULL;
- char **comments;
- bool initialized = false;
+ const vorbis_info *vi;
enum decoder_command cmd = DECODE_COMMAND_NONE;
if (ogg_stream_type_detect(input_stream) != VORBIS)
@@ -306,6 +306,28 @@ vorbis_stream_decode(struct decoder *decoder,
return;
}
+ vi = ov_info(&vf, -1);
+ if (vi == NULL) {
+ g_warning("ov_info() has failed");
+ return;
+ }
+
+ audio_format_init(&audio_format, vi->rate, 16, vi->channels);
+
+ if (!audio_format_valid(&audio_format)) {
+ g_warning("Invalid audio format: %u:%u:%u\n",
+ audio_format.sample_rate,
+ audio_format.bits,
+ audio_format.channels);
+ return;
+ }
+
+ total_time = ov_time_total(&vf, -1);
+ if (total_time < 0)
+ total_time = 0;
+
+ decoder_initialized(decoder, &audio_format, data.seekable, total_time);
+
do {
if (cmd == DECODE_COMMAND_SEEK) {
double seek_where = decoder_seek_where(decoder);
@@ -324,29 +346,23 @@ vorbis_stream_decode(struct decoder *decoder,
break;
if (current_section != prev_section) {
- /*printf("new song!\n"); */
- vorbis_info *vi = ov_info(&vf, -1);
+ char **comments;
struct replay_gain_info *new_rgi;
- audio_format_init(&audio_format, vi->rate, 16, vi->channels);
-
- if (!audio_format_valid(&audio_format)) {
- g_warning("Invalid audio format: %u:%u:%u\n",
- audio_format.sample_rate,
- audio_format.bits,
- audio_format.channels);
+ vi = ov_info(&vf, -1);
+ if (vi == NULL) {
+ g_warning("ov_info() has failed");
break;
}
- if (!initialized) {
- float total_time = ov_time_total(&vf, -1);
- if (total_time < 0)
- total_time = 0;
- decoder_initialized(decoder, &audio_format,
- data.seekable,
- total_time);
- initialized = true;
+ if (vi->rate != audio_format.sample_rate ||
+ vi->channels != audio_format.channels) {
+ /* we don't support audio format
+ change yet */
+ g_warning("audio format change, stopping here");
+ break;
}
+
comments = ov_comment(&vf, -1)->user_comments;
vorbis_send_comments(decoder, input_stream, comments);
new_rgi = vorbis_comments_to_replay_gain(comments);
@@ -355,9 +371,9 @@ vorbis_stream_decode(struct decoder *decoder,
replay_gain_info_free(replay_gain_info);
replay_gain_info = new_rgi;
}
- }
- prev_section = current_section;
+ prev_section = current_section;
+ }
if ((test = ov_bitrate_instant(&vf)) > 0)
bitRate = test / 1000;
--
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