stream/audio_in.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_AUDIO_IN_H
  20 #define MPLAYER_AUDIO_IN_H
  21
  22 #define AUDIO_IN_ALSA 1
  23 #define AUDIO_IN_OSS 2
  24
  25 #include "config.h"
  26
  27 #ifdef CONFIG_ALSA
  28 #include <alsa/asoundlib.h>
  29
  30 typedef struct {
  31     char *device;
  32
  33     snd_pcm_t *handle;
  34     snd_output_t *log;
  35     int buffer_time, period_time, chunk_size;
  36     size_t bits_per_sample, bits_per_frame;
  37 } ai_alsa_t;
  38 #endif
  39
  40 #ifdef CONFIG_OSS_AUDIO
  41 typedef struct {
  42     char *device;
  43
  44     int audio_fd;
  45 } ai_oss_t;
  46 #endif
  47
  48 typedef struct
  49 {
  50     int type;
  51     int setup;
  52
  53     /* requested values */
  54     int req_channels;
  55     int req_samplerate;
  56
  57     /* real values read-only */
  58     int channels;
  59     int samplerate;
  60     int blocksize;
  61     int bytes_per_sample;
  62     int samplesize;
  63
  64 #ifdef CONFIG_ALSA
  65     ai_alsa_t alsa;
  66 #endif
  67 #ifdef CONFIG_OSS_AUDIO
  68     ai_oss_t oss;
  69 #endif
  70 } audio_in_t;
  71
  72 int audio_in_init(audio_in_t *ai, int type);
  73 int audio_in_setup(audio_in_t *ai);
  74 int audio_in_set_device(audio_in_t *ai, char *device);
  75 int audio_in_set_samplerate(audio_in_t *ai, int rate);
  76 int audio_in_set_channels(audio_in_t *ai, int channels);
  77 int audio_in_uninit(audio_in_t *ai);
  78 int audio_in_start_capture(audio_in_t *ai);
  79 int audio_in_read_chunk(audio_in_t *ai, unsigned char *buffer);
  80
  81 #ifdef CONFIG_ALSA
  82 int ai_alsa_setup(audio_in_t *ai);
  83 int ai_alsa_init(audio_in_t *ai);
  84 int ai_alsa_xrun(audio_in_t *ai);
  85 #endif
  86
  87 #ifdef CONFIG_OSS_AUDIO
  88 int ai_oss_set_samplerate(audio_in_t *ai);
  89 int ai_oss_set_channels(audio_in_t *ai);
  90 int ai_oss_init(audio_in_t *ai);
  91 #endif
  92
  93 #endif /* MPLAYER_AUDIO_IN_H */