Add support for VDPAU video out, including hardware decoding.
[mplayer/glamo.git] / libao2 / ao_arts.c
blob30db48fb225ed73b541f924f3ea8d237bd8980b1
1 /*
2 * aRts audio output driver for MPlayer
4 * copyright (c) 2002 Michele Balistreri <brain87@gmx.net>
6 * This file is part of MPlayer.
8 * MPlayer is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * MPlayer is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include <artsc.h>
24 #include <stdio.h>
26 #include "config.h"
27 #include "audio_out.h"
28 #include "audio_out_internal.h"
29 #include "libaf/af_format.h"
30 #include "mp_msg.h"
31 #include "help_mp.h"
33 #define OBTAIN_BITRATE(a) (((a != AF_FORMAT_U8) && (a != AF_FORMAT_S8)) ? 16 : 8)
35 /* Feel free to experiment with the following values: */
36 #define ARTS_PACKETS 10 /* Number of audio packets */
37 #define ARTS_PACKET_SIZE_LOG2 11 /* Log2 of audio packet size */
39 static arts_stream_t stream;
41 static ao_info_t info =
43 "aRts audio output",
44 "arts",
45 "Michele Balistreri <brain87@gmx.net>",
49 LIBAO_EXTERN(arts)
51 static int control(int cmd, void *arg)
53 return CONTROL_UNKNOWN;
56 static int init(int rate_hz, int channels, int format, int flags)
58 int err;
59 int frag_spec;
61 if( (err=arts_init()) ) {
62 mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_ARTS_CantInit, arts_error_text(err));
63 return 0;
65 mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_ARTS_ServerConnect);
68 * arts supports 8bit unsigned and 16bit signed sample formats
69 * (16bit apparently in little endian format, even in the case
70 * when artsd runs on a big endian cpu).
72 * Unsupported formats are translated to one of these two formats
73 * using mplayer's audio filters.
75 switch (format) {
76 case AF_FORMAT_U8:
77 case AF_FORMAT_S8:
78 format = AF_FORMAT_U8;
79 break;
80 default:
81 format = AF_FORMAT_S16_LE; /* artsd always expects little endian?*/
82 break;
85 ao_data.format = format;
86 ao_data.channels = channels;
87 ao_data.samplerate = rate_hz;
88 ao_data.bps = (rate_hz*channels);
90 if(format != AF_FORMAT_U8 && format != AF_FORMAT_S8)
91 ao_data.bps*=2;
93 stream=arts_play_stream(rate_hz, OBTAIN_BITRATE(format), channels, "MPlayer");
95 if(stream == NULL) {
96 mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_ARTS_CantOpenStream);
97 arts_free();
98 return 0;
101 /* Set the stream to blocking: it will not block anyway, but it seems */
102 /* to be working better */
103 arts_stream_set(stream, ARTS_P_BLOCKING, 1);
104 frag_spec = ARTS_PACKET_SIZE_LOG2 | ARTS_PACKETS << 16;
105 arts_stream_set(stream, ARTS_P_PACKET_SETTINGS, frag_spec);
106 ao_data.buffersize = arts_stream_get(stream, ARTS_P_BUFFER_SIZE);
107 mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_ARTS_StreamOpen);
109 mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_ARTS_BufferSize,
110 ao_data.buffersize);
111 mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_ARTS_BufferSize,
112 arts_stream_get(stream, ARTS_P_PACKET_SIZE));
114 return 1;
117 static void uninit(int immed)
119 arts_close_stream(stream);
120 arts_free();
123 static int play(void* data,int len,int flags)
125 return arts_write(stream, data, len);
128 static void audio_pause(void)
132 static void audio_resume(void)
136 static void reset(void)
140 static int get_space(void)
142 return arts_stream_get(stream, ARTS_P_BUFFER_SPACE);
145 static float get_delay(void)
147 return ((float) (ao_data.buffersize - arts_stream_get(stream,
148 ARTS_P_BUFFER_SPACE))) / ((float) ao_data.bps);