aboutsummaryrefslogtreecommitdiffstats
path: root/src/audioOutputs/audioOutput_shout_mp3.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/audioOutputs/audioOutput_shout_mp3.c')
-rw-r--r--src/audioOutputs/audioOutput_shout_mp3.c194
1 files changed, 194 insertions, 0 deletions
diff --git a/src/audioOutputs/audioOutput_shout_mp3.c b/src/audioOutputs/audioOutput_shout_mp3.c
new file mode 100644
index 000000000..388808c1b
--- /dev/null
+++ b/src/audioOutputs/audioOutput_shout_mp3.c
@@ -0,0 +1,194 @@
+/* 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 "../output_api.h"
+
+#ifdef HAVE_SHOUT_MP3
+
+#include "../utils.h"
+#include "audioOutput_shout.h"
+#include <lame/lame.h>
+
+typedef struct _lame_data {
+ lame_global_flags *gfp;
+} lame_data;
+
+
+static int shout_mp3_encoder_init(shout_data * sd)
+{
+ lame_data *ld;
+
+ if (NULL == (ld = xmalloc(sizeof(lame_data))))
+ FATAL("error initializing lame encoder data\n");
+ sd->encoder_data = ld;
+
+ return 0;
+}
+
+static int shout_mp3_encoder_clear_encoder(shout_data * sd)
+{
+ lame_data *ld = (lame_data *)sd->encoder_data;
+ shout_buffer *buf = &sd->buf;
+ int ret;
+
+ if ((ret = lame_encode_flush(ld->gfp, buf->data + buf->len,
+ buf->len)) < 0)
+ ERROR("error flushing lame buffers\n");
+
+ return (ret > 0);
+}
+
+static void shout_mp3_encoder_finish(shout_data * sd)
+{
+ lame_data *ld = (lame_data *)sd->encoder_data;
+
+ lame_close(ld->gfp);
+ ld->gfp = NULL;
+}
+
+static int shout_mp3_encoder_init_encoder(shout_data * sd)
+{
+ lame_data *ld = (lame_data *)sd->encoder_data;
+
+ if (NULL == (ld->gfp = lame_init())) {
+ ERROR("error initializing lame encoder for shout\n");
+ return -1;
+ }
+
+ if (sd->quality >= -1.0) {
+ if (0 != lame_set_VBR(ld->gfp, vbr_rh)) {
+ ERROR("error setting lame VBR mode\n");
+ return -1;
+ }
+ if (0 != lame_set_VBR_q(ld->gfp, sd->quality)) {
+ ERROR("error setting lame VBR quality\n");
+ return -1;
+ }
+ } else {
+ if (0 != lame_set_brate(ld->gfp, sd->bitrate)) {
+ ERROR("error setting lame bitrate\n");
+ return -1;
+ }
+ }
+
+ if (0 != lame_set_num_channels(ld->gfp,
+ sd->audio_format.channels)) {
+ ERROR("error setting lame num channels\n");
+ return -1;
+ }
+
+ if (0 != lame_set_in_samplerate(ld->gfp,
+ sd->audio_format.sampleRate)) {
+ ERROR("error setting lame sample rate\n");
+ return -1;
+ }
+
+ if (0 > lame_init_params(ld->gfp))
+ FATAL("error initializing lame params\n");
+
+ return 0;
+}
+
+static int shout_mp3_encoder_send_metadata(shout_data * sd,
+ char * song, size_t size)
+{
+ char artist[size];
+ char title[size];
+ int i;
+ struct tag *tag = sd->tag;
+
+ strncpy(artist, "", size);
+ strncpy(title, "", size);
+
+ for (i = 0; i < tag->numOfItems; i++) {
+ switch (tag->items[i]->type) {
+ case TAG_ITEM_ARTIST:
+ strncpy(artist, tag->items[i]->value, size);
+ break;
+ case TAG_ITEM_TITLE:
+ strncpy(title, tag->items[i]->value, size);
+ break;
+
+ default:
+ break;
+ }
+ }
+ snprintf(song, size, "%s - %s", title, artist);
+
+ return 1;
+}
+
+static int shout_mp3_encoder_encode(shout_data * sd,
+ const char * chunk, size_t len)
+{
+ unsigned int i;
+ int j;
+ float (*lamebuf)[2];
+ shout_buffer *buf = &(sd->buf);
+ unsigned int samples;
+ int bytes = sd->audio_format.bits / 8;
+ lame_data *ld = (lame_data *)sd->encoder_data;
+ int bytes_out;
+
+ samples = len / (bytes * sd->audio_format.channels);
+ /* rough estimate, from lame.h */
+ lamebuf = xmalloc(sizeof(float) * (1.25 * samples + 7200));
+
+ /* this is for only 16-bit audio */
+
+ for (i = 0; i < samples; i++) {
+ for (j = 0; j < sd->audio_format.channels; j++) {
+ lamebuf[j][i] = *((const mpd_sint16 *) chunk);
+ chunk += bytes;
+ }
+ }
+
+ bytes_out = lame_encode_buffer_float(ld->gfp, lamebuf[0], lamebuf[1],
+ samples, buf->data,
+ buf->max_len - buf->len);
+ free(lamebuf);
+
+ if (0 > bytes_out) {
+ ERROR("error encoding lame buffer for shout\n");
+ lame_close(ld->gfp);
+ ld->gfp = NULL;
+ return -1;
+ } else
+ buf->len = bytes_out; /* signed to unsigned conversion */
+
+ return 0;
+}
+
+
+shout_encoder_plugin shout_mp3_encoder = {
+ "mp3",
+ SHOUT_FORMAT_MP3,
+
+ shout_mp3_encoder_clear_encoder,
+ shout_mp3_encoder_encode,
+ shout_mp3_encoder_finish,
+ shout_mp3_encoder_init,
+ shout_mp3_encoder_init_encoder,
+ shout_mp3_encoder_send_metadata,
+};
+
+#else
+
+DISABLED_SHOUT_ENCODER_PLUGIN(shout_mp3_encoder);
+
+#endif