diff options
| -rw-r--r-- | libao2/afmt.c | 37 | ||||
| -rw-r--r-- | libao2/audio_out.h | 1 |
2 files changed, 38 insertions, 0 deletions
diff --git a/libao2/afmt.c b/libao2/afmt.c index 44eb522c19..85bbc30ff0 100644 --- a/libao2/afmt.c +++ b/libao2/afmt.c @@ -45,3 +45,40 @@ char *audio_out_format_name(int format) } return("Unknown"); } + +// return number of bits for 1 sample in one channel, or 8 bits for compressed +int audio_out_format_bits(int format){ + switch (format) + { +/* + the following two formats are not available with old linux kernel + headers (e.g. in 2.2.16) +*/ +#ifdef AFMT_S32_LE + case AFMT_S32_LE: + return 32; +#endif +#ifdef AFMT_S32_BE + case AFMT_S32_BE: + return 32; +#endif + + case AFMT_U16_LE: + case AFMT_U16_BE: + case AFMT_S16_LE: + case AFMT_S16_BE: + return 16;//16 bits + + case AFMT_MU_LAW: + case AFMT_A_LAW: + case AFMT_IMA_ADPCM: + case AFMT_S8: + case AFMT_U8: + case AFMT_MPEG: + case AFMT_AC3: + default: + return 8;//default 1 byte + + } + return 8; +}
\ No newline at end of file diff --git a/libao2/audio_out.h b/libao2/audio_out.h index 4ac4929155..353b5a4d71 100644 --- a/libao2/audio_out.h +++ b/libao2/audio_out.h @@ -42,6 +42,7 @@ extern ao_data_t ao_data; // prototypes extern char *audio_out_format_name(int format); +extern int audio_out_format_bits(int format); // NULL terminated array of all drivers extern ao_functions_t* audio_out_drivers[]; |