stream/audio_in.h

   1 #ifndef _audio_in_h
   2 #define _audio_in_h
   3
   4 #define AUDIO_IN_ALSA 1
   5 #define AUDIO_IN_OSS 2
   6
   7 #include "config.h"
   8
   9 #if defined(HAVE_ALSA9) || defined(HAVE_ALSA1X)
  10 #include <alsa/asoundlib.h>
  11
  12 typedef struct {
  13     char *device;
  14
  15     snd_pcm_t *handle;
  16     snd_output_t *log;
  17     int buffer_time, period_time, chunk_size;
  18     size_t bits_per_sample, bits_per_frame;
  19 } ai_alsa_t;
  20 #endif
  21
  22 #ifdef USE_OSS_AUDIO
  23 typedef struct {
  24     char *device;
  25
  26     int audio_fd;
  27 } ai_oss_t;
  28 #endif
  29
  30 typedef struct
  31 {
  32     int type;
  33     int setup;
  34
  35     /* requested values */
  36     int req_channels;
  37     int req_samplerate;
  38
  39     /* real values read-only */
  40     int channels;
  41     int samplerate;
  42     int blocksize;
  43     int bytes_per_sample;
  44     int samplesize;
  45
  46 #if defined(HAVE_ALSA9) || defined(HAVE_ALSA1X)
  47     ai_alsa_t alsa;
  48 #endif
  49 #ifdef USE_OSS_AUDIO
  50     ai_oss_t oss;
  51 #endif
  52 } audio_in_t;
  53
  54 int audio_in_init(audio_in_t *ai, int type);
  55 int audio_in_setup(audio_in_t *ai);
  56 int audio_in_set_device(audio_in_t *ai, char *device);
  57 int audio_in_set_samplerate(audio_in_t *ai, int rate);
  58 int audio_in_set_channels(audio_in_t *ai, int channels);
  59 int audio_in_uninit(audio_in_t *ai);
  60 int audio_in_start_capture(audio_in_t *ai);
  61 int audio_in_read_chunk(audio_in_t *ai, unsigned char *buffer);
  62
  63 #if defined(HAVE_ALSA9) || defined(HAVE_ALSA1X)
  64 int ai_alsa_setup(audio_in_t *ai);
  65 int ai_alsa_init(audio_in_t *ai);
  66 int ai_alsa_xrun(audio_in_t *ai);
  67 #endif
  68
  69 #ifdef USE_OSS_AUDIO
  70 int ai_oss_set_samplerate(audio_in_t *ai);
  71 int ai_oss_set_channels(audio_in_t *ai);
  72 int ai_oss_init(audio_in_t *ai);
  73 #endif
  74
  75 #endif /* _audio_in_h */