diff options
Diffstat (limited to 'audio/audio.c')
| -rw-r--r-- | audio/audio.c | 110 |
1 files changed, 94 insertions, 16 deletions
diff --git a/audio/audio.c b/audio/audio.c index 556e6fdbcb..5d3c7f15f0 100644 --- a/audio/audio.c +++ b/audio/audio.c @@ -80,7 +80,8 @@ static struct { { 44100, /* freq */ 2, /* nchannels */ - AUD_FMT_S16 /* fmt */ + AUD_FMT_S16, /* fmt */ + AUDIO_HOST_ENDIANNESS } }, @@ -91,7 +92,8 @@ static struct { { 44100, /* freq */ 2, /* nchannels */ - AUD_FMT_S16 /* fmt */ + AUD_FMT_S16, /* fmt */ + AUDIO_HOST_ENDIANNESS } }, @@ -166,6 +168,25 @@ int audio_bug (const char *funcname, int cond) } #endif +static inline int audio_bits_to_index (int bits) +{ + switch (bits) { + case 8: + return 0; + + case 16: + return 1; + + case 32: + return 2; + + default: + audio_bug ("bits_to_index", 1); + AUD_log (NULL, "invalid bits %d\n", bits); + return 0; + } +} + void *audio_calloc (const char *funcname, int nmemb, size_t size) { int cond; @@ -227,6 +248,12 @@ const char *audio_audfmt_to_string (audfmt_e fmt) case AUD_FMT_S16: return "S16"; + + case AUD_FMT_U32: + return "U32"; + + case AUD_FMT_S32: + return "S32"; } dolog ("Bogus audfmt %d returning S16\n", fmt); @@ -243,6 +270,10 @@ audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp) *defaultp = 0; return AUD_FMT_U16; } + else if (!strcasecmp (s, "u32")) { + *defaultp = 0; + return AUD_FMT_U32; + } else if (!strcasecmp (s, "s8")) { *defaultp = 0; return AUD_FMT_S8; @@ -251,6 +282,10 @@ audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp) *defaultp = 0; return AUD_FMT_S16; } + else if (!strcasecmp (s, "s32")) { + *defaultp = 0; + return AUD_FMT_S32; + } else { dolog ("Bogus audio format `%s' using %s\n", s, audio_audfmt_to_string (defval)); @@ -538,6 +573,8 @@ static int audio_validate_settings (audsettings_t *as) case AUD_FMT_U8: case AUD_FMT_S16: case AUD_FMT_U16: + case AUD_FMT_S32: + case AUD_FMT_U32: break; default: invalid = 1; @@ -563,6 +600,12 @@ static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as) case AUD_FMT_U16: bits = 16; break; + + case AUD_FMT_S32: + sign = 1; + case AUD_FMT_U32: + bits = 32; + break; } return info->freq == as->freq && info->nchannels == as->nchannels @@ -573,7 +616,7 @@ static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as) void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as) { - int bits = 8, sign = 0; + int bits = 8, sign = 0, shift = 0; switch (as->fmt) { case AUD_FMT_S8: @@ -585,6 +628,14 @@ void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as) sign = 1; case AUD_FMT_U16: bits = 16; + shift = 1; + break; + + case AUD_FMT_S32: + sign = 1; + case AUD_FMT_U32: + bits = 32; + shift = 2; break; } @@ -592,7 +643,7 @@ void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as) info->bits = bits; info->sign = sign; info->nchannels = as->nchannels; - info->shift = (as->nchannels == 2) + (bits == 16); + info->shift = (as->nchannels == 2) + shift; info->align = (1 << info->shift) - 1; info->bytes_per_second = info->freq << info->shift; info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS); @@ -608,22 +659,49 @@ void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) memset (buf, 0x00, len << info->shift); } else { - if (info->bits == 8) { + switch (info->bits) { + case 8: memset (buf, 0x80, len << info->shift); - } - else { - int i; - uint16_t *p = buf; - int shift = info->nchannels - 1; - short s = INT16_MAX; + break; - if (info->swap_endianness) { - s = bswap16 (s); + case 16: + { + int i; + uint16_t *p = buf; + int shift = info->nchannels - 1; + short s = INT16_MAX; + + if (info->swap_endianness) { + s = bswap16 (s); + } + + for (i = 0; i < len << shift; i++) { + p[i] = s; + } } + break; + + case 32: + { + int i; + uint32_t *p = buf; + int shift = info->nchannels - 1; + int32_t s = INT32_MAX; + + if (info->swap_endianness) { + s = bswap32 (s); + } - for (i = 0; i < len << shift; i++) { - p[i] = s; + for (i = 0; i < len << shift; i++) { + p[i] = s; + } } + break; + + default: + AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n", + info->bits); + break; } } } @@ -1811,7 +1889,7 @@ CaptureVoiceOut *AUD_add_capture ( [hw->info.nchannels == 2] [hw->info.sign] [hw->info.swap_endianness] - [hw->info.bits == 16]; + [audio_bits_to_index (hw->info.bits)]; LIST_INSERT_HEAD (&s->cap_head, cap, entries); LIST_INSERT_HEAD (&cap->cb_head, cb, entries); |