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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "audioOutput_shout.h"
#ifdef HAVE_SHOUT
#include "../utils.h"
static void add_tag(struct shout_data *sd, const char *name, char *value)
{
if (value) {
union const_hack u;
u.in = name;
vorbis_comment_add_tag(&(sd->vc), u.out, value);
}
}
void copy_tag_to_vorbis_comment(struct shout_data *sd)
{
if (sd->tag) {
int i;
for (i = 0; i < sd->tag->numOfItems; i++) {
switch (sd->tag->items[i]->type) {
case TAG_ITEM_ARTIST:
add_tag(sd, "ARTIST", sd->tag->items[i]->value);
break;
case TAG_ITEM_ALBUM:
add_tag(sd, "ALBUM", sd->tag->items[i]->value);
break;
case TAG_ITEM_TITLE:
add_tag(sd, "TITLE", sd->tag->items[i]->value);
break;
default:
break;
}
}
}
}
static int copy_ogg_buffer_to_shout_buffer(ogg_page *og,
shout_buffer *buf)
{
if (buf->max_len - buf->len >= (size_t)og->header_len) {
memcpy(buf->data + buf->len,
og->header, og->header_len);
buf->len += og->header_len;
} else {
ERROR("%s: not enough buffer space!\n", __func__);
return -1;
}
if (buf->max_len - buf->len >= (size_t)og->body_len) {
memcpy(buf->data + buf->len,
og->body, og->body_len);
buf->len += og->body_len;
} else {
ERROR("%s: not enough buffer space!\n", __func__);
return -1;
}
return 0;
}
static int flush_ogg_buffer(struct shout_data *sd)
{
shout_buffer *buf = &sd->buf;
int ret = 0;
if (ogg_stream_flush(&sd->os, &sd->og))
ret = copy_ogg_buffer_to_shout_buffer(&sd->og, buf);
return ret;
}
int send_ogg_vorbis_header(struct shout_data *sd)
{
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));
return flush_ogg_buffer(sd);
}
static void finish_encoder(struct shout_data *sd)
{
vorbis_analysis_wrote(&sd->vd, 0);
while (vorbis_analysis_blockout(&sd->vd, &sd->vb) == 1) {
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);
}
}
}
int shout_ogg_encoder_clear_encoder(struct shout_data *sd)
{
int ret;
finish_encoder(sd);
if ((ret = ogg_stream_pageout(&sd->os, &sd->og)))
copy_ogg_buffer_to_shout_buffer(&sd->og, &sd->buf);
vorbis_comment_clear(&sd->vc);
ogg_stream_clear(&sd->os);
vorbis_block_clear(&sd->vb);
vorbis_dsp_clear(&sd->vd);
vorbis_info_clear(&sd->vi);
return ret;
}
static int reinit_encoder(struct shout_data *sd)
{
vorbis_info_init(&(sd->vi));
if (sd->quality >= -1.0) {
if (0 != vorbis_encode_init_vbr(&(sd->vi),
sd->audio_format.channels,
sd->audio_format.sampleRate,
sd->quality * 0.1)) {
ERROR("problem setting up vorbis encoder for shout\n");
vorbis_info_clear(&(sd->vi));
return -1;
}
} else {
if (0 != vorbis_encode_init(&(sd->vi),
sd->audio_format.channels,
sd->audio_format.sampleRate, -1.0,
sd->bitrate * 1000, -1.0)) {
ERROR("problem setting 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), rand());
vorbis_comment_init(&(sd->vc));
return 0;
}
int init_encoder(struct shout_data *sd)
{
if (reinit_encoder(sd))
return -1;
if (send_ogg_vorbis_header(sd)) {
ERROR("error sending ogg vorbis header for shout\n");
return -1;
}
return 0;
}
int shout_ogg_encoder_send_metadata(struct shout_data * sd)
{
shout_ogg_encoder_clear_encoder(sd);
if (reinit_encoder(sd))
return 0;
copy_tag_to_vorbis_comment(sd);
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));
flush_ogg_buffer(sd);
return 0;
}
void shout_ogg_encoder_encode(struct shout_data *sd,
const char *chunk, size_t size)
{
shout_buffer *buf = &sd->buf;
unsigned int i;
int j;
float **vorbbuf;
unsigned int samples;
int bytes = sd->audio_format.bits / 8;
samples = size / (bytes * sd->audio_format.channels);
vorbbuf = vorbis_analysis_buffer(&(sd->vd), samples);
/* this is for only 16-bit audio */
for (i = 0; i < samples; i++) {
for (j = 0; j < sd->audio_format.channels; j++) {
vorbbuf[j][i] = (*((const mpd_sint16 *) chunk)) / 32768.0;
chunk += bytes;
}
}
vorbis_analysis_wrote(&(sd->vd), samples);
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));
}
}
if (ogg_stream_pageout(&sd->os, &sd->og))
copy_ogg_buffer_to_shout_buffer(&sd->og, buf);
}
#endif
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