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authorWarren Dukes <warren.dukes@gmail.com>2004-10-22 19:40:09 +0000
committerWarren Dukes <warren.dukes@gmail.com>2004-10-22 19:40:09 +0000
commit7b57a995837bce1dfa75140a478974e9d8d82180 (patch)
tree41d0a38ad0135989d0b0f982639506c93b20d0f0 /src/audioOutput_shout.c
parent5b7a1419b92178042473cefc4d687ee87c5f4c38 (diff)
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initial working shout output
git-svn-id: https://svn.musicpd.org/mpd/trunk@2300 09075e82-0dd4-0310-85a5-a0d7c8717e4f
Diffstat (limited to '')
-rw-r--r--src/audioOutput_shout.c86
1 files changed, 85 insertions, 1 deletions
diff --git a/src/audioOutput_shout.c b/src/audioOutput_shout.c
index 038e96a98..12162b240 100644
--- a/src/audioOutput_shout.c
+++ b/src/audioOutput_shout.c
@@ -36,20 +36,31 @@
static int shoutInitCount = 0;
+/* lots of this code blatantly stolent from bossogg/bossao2 */
+
typedef struct _ShoutData {
shout_t * shoutConn;
+
+ ogg_stream_state os;
ogg_page og;
ogg_packet op;
+ ogg_packet header_main;
+ ogg_packet header_comments;
+ ogg_packet header_codebooks;
+
vorbis_dsp_state vd;
vorbis_block vb;
vorbis_info vi;
vorbis_comment vc;
+
+ int serialno;
} ShoutData;
static ShoutData * newShoutData() {
ShoutData * ret = malloc(sizeof(ShoutData));
ret->shoutConn = shout_new();
+ ret->serialno = rand();
return ret;
}
@@ -159,9 +170,24 @@ static void shout_closeDevice(AudioOutput * audioOutput) {
shout_get_error(sd->shoutConn));
}
+ ogg_stream_clear(&(sd->os));
+ vorbis_block_clear(&(sd->vb));
+ vorbis_dsp_clear(&(sd->vd));
+ vorbis_comment_clear(&(sd->vc));
+ vorbis_info_clear(&(sd->vi));
+
audioOutput->open = 0;
}
+static void write_page(ShoutData * sd) {
+ if(!sd->og.header_len || !sd->og.body_len) return;
+
+ shout_sync(sd->shoutConn);
+ shout_send(sd->shoutConn, sd->og.header, sd->og.header_len);
+ shout_send(sd->shoutConn, sd->og.body, sd->og.body_len);
+ shout_sync(sd->shoutConn);
+}
+
static int shout_openDevice(AudioOutput * audioOutput,
AudioFormat * audioFormat)
{
@@ -174,13 +200,71 @@ static int shout_openDevice(AudioOutput * audioOutput,
return -1;
}
+ vorbis_info_init(&(sd->vi));
+
+#define BITRATE 128
+
+ if( 0 != vorbis_encode_init(&(sd->vi), audioFormat->channels,
+ audioFormat->sampleRate, BITRATE*1000, BITRATE*1000,
+ BITRATE*1000))
+ {
+ ERROR("problem seting up vorbis encoder for shout\n");
+ vorbis_info_clear(&(sd->vi));
+ return -1;
+ }
+
+ vorbis_analysis_init(&(sd->vd), &(sd->vi));
+ vorbis_block_init (&(sd->vd), &(sd->vb));
+
+ ogg_stream_init(&(sd->os), sd->serialno);
+
+ vorbis_comment_init(&(sd->vc));
+ vorbis_analysis_headerout(&(sd->vd), &(sd->vc), &(sd->header_main),
+ &(sd->header_comments), &(sd->header_codebooks));
+
+ ogg_stream_packetin(&(sd->os), &(sd->header_main));
+ ogg_stream_packetin(&(sd->os), &(sd->header_comments));
+ ogg_stream_packetin(&(sd->os), &(sd->header_codebooks));
+
audioOutput->open = 1;
+ while(ogg_stream_flush(&(sd->os), &(sd->og)))
+ {
+ write_page(sd);
+ }
+
return 0;
}
-static int shout_play(AudioOutput * audioOutput, char * playChunk, int play) {
+static int shout_play(AudioOutput * audioOutput, char * playChunk, int size) {
+ int i,j;
+ ShoutData * sd = (ShoutData *)audioOutput->data;
+
+ float **vorbbuf = vorbis_analysis_buffer(&(sd->vd), size/4);
+
+ for(i=0, j=0; i < size; i+=4, j++) {
+ vorbbuf[0][j] = (*((mpd_sint16 *)(playChunk+i))) / 32768.0;
+ vorbbuf[1][j] = (*((mpd_sint16 *)(playChunk+i+2))) / 32768.0;
+ }
+
+ vorbis_analysis_wrote(&(sd->vd), size/4);
+
+ while(1 == vorbis_analysis_blockout(&(sd->vd), &(sd->vb))) {
+ vorbis_analysis(&(sd->vb), NULL);
+ vorbis_bitrate_addblock(&(sd->vb));
+
+ while(vorbis_bitrate_flushpacket(&(sd->vd), &(sd->op))) {
+ ogg_stream_packetin(&(sd->os), &(sd->op));
+ do {
+ if(ogg_stream_pageout(&(sd->os), &(sd->og)) == 0) {
+ break;
+ }
+ write_page(sd);
+ } while(ogg_page_eos(&(sd->og)));
+ }
+ }
+
return 0;
}