[alsa-devel] [PATCH 0/1] Fix DSD sample format endianess and add big-endian format
This patch adds big-endian DSD sample format and fixes return value of DSD formats for snd_pcm_format_little_endian().
Jussi Laako (1): Fix DSD sample format endianess and add big-endian format
include/pcm.h | 6 +++++- include/sound/asound.h | 4 +++- src/pcm/pcm.c | 4 ++++ src/pcm/pcm_misc.c | 17 ++++++++++++++--- 4 files changed, 26 insertions(+), 5 deletions(-)
Signed-off-by: Jussi Laako jussi@sonarnerd.net --- include/pcm.h | 6 +++++- include/sound/asound.h | 4 +++- src/pcm/pcm.c | 4 ++++ src/pcm/pcm_misc.c | 17 ++++++++++++++--- 4 files changed, 26 insertions(+), 5 deletions(-)
diff --git a/include/pcm.h b/include/pcm.h index db88ad5..0655e7f 100644 --- a/include/pcm.h +++ b/include/pcm.h @@ -213,7 +213,11 @@ typedef enum _snd_pcm_format { SND_PCM_FORMAT_DSD_U16_LE, /* Direct Stream Digital (DSD) in 4-byte samples (x32) */ SND_PCM_FORMAT_DSD_U32_LE, - SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_DSD_U32_LE, + /* Direct Stream Digital (DSD) in 2-byte samples (x16) */ + SND_PCM_FORMAT_DSD_U16_BE, + /* Direct Stream Digital (DSD) in 4-byte samples (x32) */ + SND_PCM_FORMAT_DSD_U32_BE, + SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_DSD_U32_BE,
#if __BYTE_ORDER == __LITTLE_ENDIAN /** Signed 16 bit CPU endian */ diff --git a/include/sound/asound.h b/include/sound/asound.h index 6ee5867..941d32f 100644 --- a/include/sound/asound.h +++ b/include/sound/asound.h @@ -220,7 +220,9 @@ typedef int __bitwise snd_pcm_format_t; #define SNDRV_PCM_FORMAT_DSD_U8 ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */ #define SNDRV_PCM_FORMAT_DSD_U16_LE ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */ #define SNDRV_PCM_FORMAT_DSD_U32_LE ((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */ -#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_LE +#define SNDRV_PCM_FORMAT_DSD_U16_BE ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */ +#define SNDRV_PCM_FORMAT_DSD_U32_BE ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */ +#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_BE
#ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 4a7be6c..3904256 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -1566,6 +1566,8 @@ static const char *const snd_pcm_format_names[] = { FORMAT(DSD_U8), FORMAT(DSD_U16_LE), FORMAT(DSD_U32_LE), + FORMAT(DSD_U16_BE), + FORMAT(DSD_U32_BE), };
static const char *const snd_pcm_format_aliases[SND_PCM_FORMAT_LAST+1] = { @@ -1626,6 +1628,8 @@ static const char *const snd_pcm_format_descriptions[] = { FORMATD(DSD_U8, "Direct Stream Digital, 1-byte (x8), oldest bit in MSB"), FORMATD(DSD_U16_LE, "Direct Stream Digital, 2-byte (x16), little endian, oldest bits in MSB"), FORMATD(DSD_U32_LE, "Direct Stream Digital, 4-byte (x32), little endian, oldest bits in MSB"), + FORMATD(DSD_U16_BE, "Direct Stream Digital, 2-byte (x16), big endian, oldest bits in MSB"), + FORMATD(DSD_U32_BE, "Direct Stream Digital, 4-byte (x32), big endian, oldest bits in MSB"), };
static const char *const snd_pcm_type_names[] = { diff --git a/src/pcm/pcm_misc.c b/src/pcm/pcm_misc.c index 9272179..5870f82 100644 --- a/src/pcm/pcm_misc.c +++ b/src/pcm/pcm_misc.c @@ -65,6 +65,8 @@ int snd_pcm_format_signed(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_DSD_U8: case SNDRV_PCM_FORMAT_DSD_U16_LE: case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return 0; default: return -EINVAL; @@ -137,6 +139,8 @@ int snd_pcm_format_little_endian(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_U24_3LE: case SNDRV_PCM_FORMAT_U20_3LE: case SNDRV_PCM_FORMAT_U18_3LE: + case SNDRV_PCM_FORMAT_DSD_U16_LE: + case SNDRV_PCM_FORMAT_DSD_U32_LE: return 1; case SNDRV_PCM_FORMAT_S16_BE: case SNDRV_PCM_FORMAT_U16_BE: @@ -153,9 +157,8 @@ int snd_pcm_format_little_endian(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_U24_3BE: case SNDRV_PCM_FORMAT_U20_3BE: case SNDRV_PCM_FORMAT_U18_3BE: - case SNDRV_PCM_FORMAT_DSD_U8: - case SNDRV_PCM_FORMAT_DSD_U16_LE: - case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return 0; default: return -EINVAL; @@ -208,6 +211,7 @@ int snd_pcm_format_width(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_U16_LE: case SNDRV_PCM_FORMAT_U16_BE: case SNDRV_PCM_FORMAT_DSD_U16_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: return 16; case SNDRV_PCM_FORMAT_S18_3LE: case SNDRV_PCM_FORMAT_S18_3BE: @@ -235,6 +239,7 @@ int snd_pcm_format_width(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_FLOAT_LE: case SNDRV_PCM_FORMAT_FLOAT_BE: case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return 32; case SNDRV_PCM_FORMAT_FLOAT64_LE: case SNDRV_PCM_FORMAT_FLOAT64_BE: @@ -269,6 +274,7 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_U16_LE: case SNDRV_PCM_FORMAT_U16_BE: case SNDRV_PCM_FORMAT_DSD_U16_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: return 16; case SNDRV_PCM_FORMAT_S18_3LE: case SNDRV_PCM_FORMAT_S18_3BE: @@ -296,6 +302,7 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE: case SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE: case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return 32; case SNDRV_PCM_FORMAT_FLOAT64_LE: case SNDRV_PCM_FORMAT_FLOAT64_BE: @@ -328,6 +335,7 @@ ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples) case SNDRV_PCM_FORMAT_U16_LE: case SNDRV_PCM_FORMAT_U16_BE: case SNDRV_PCM_FORMAT_DSD_U16_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: return samples * 2; case SNDRV_PCM_FORMAT_S18_3LE: case SNDRV_PCM_FORMAT_S18_3BE: @@ -353,6 +361,7 @@ ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples) case SNDRV_PCM_FORMAT_FLOAT_LE: case SNDRV_PCM_FORMAT_FLOAT_BE: case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return samples * 4; case SNDRV_PCM_FORMAT_FLOAT64_LE: case SNDRV_PCM_FORMAT_FLOAT64_BE: @@ -400,6 +409,8 @@ u_int64_t snd_pcm_format_silence_64(snd_pcm_format_t format) case SNDRV_PCM_FORMAT_DSD_U8: case SNDRV_PCM_FORMAT_DSD_U16_LE: case SNDRV_PCM_FORMAT_DSD_U32_LE: + case SNDRV_PCM_FORMAT_DSD_U16_BE: + case SNDRV_PCM_FORMAT_DSD_U32_BE: return 0x6969696969696969ULL; #ifdef SNDRV_LITTLE_ENDIAN case SNDRV_PCM_FORMAT_U16_LE:
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Jussi Laako