ALSA: pcm: Define G723 3-bit and 5-bit formats

This defines the 24bps and 40bps (8khz sample rate) G.723 codec
formats. They are going to be used once I submit the driver for
an mpeg4/g723 compression card.

I've updated the signed value to -1 as per Takashi's comments
since these are non-linear formats.

Signed-off-by: Ben Collins <bcollins@bluecherry.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/asound.h

@@ -212,7 +212,11 @@ typedef int __bitwise snd_pcm_format_t;
 #define	SNDRV_PCM_FORMAT_S18_3BE	((__force snd_pcm_format_t) 41)	/* in three bytes */
 #define	SNDRV_PCM_FORMAT_U18_3LE	((__force snd_pcm_format_t) 42)	/* in three bytes */
 #define	SNDRV_PCM_FORMAT_U18_3BE	((__force snd_pcm_format_t) 43)	/* in three bytes */
-#define	SNDRV_PCM_FORMAT_LAST		SNDRV_PCM_FORMAT_U18_3BE
+#define	SNDRV_PCM_FORMAT_G723_24	((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
+#define	SNDRV_PCM_FORMAT_G723_24_1B	((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
+#define	SNDRV_PCM_FORMAT_G723_40	((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
+#define	SNDRV_PCM_FORMAT_G723_40_1B	((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
+#define	SNDRV_PCM_FORMAT_LAST		SNDRV_PCM_FORMAT_G723_40_1B
 
 #ifdef SNDRV_LITTLE_ENDIAN
 #define	SNDRV_PCM_FORMAT_S16		SNDRV_PCM_FORMAT_S16_LE

include/sound/pcm.h

@@ -174,6 +174,10 @@ struct snd_pcm_ops {
 #define SNDRV_PCM_FMTBIT_U18_3LE	(1ULL << SNDRV_PCM_FORMAT_U18_3LE)
 #define SNDRV_PCM_FMTBIT_S18_3BE	(1ULL << SNDRV_PCM_FORMAT_S18_3BE)
 #define SNDRV_PCM_FMTBIT_U18_3BE	(1ULL << SNDRV_PCM_FORMAT_U18_3BE)
+#define SNDRV_PCM_FMTBIT_G723_24	(1ULL << SNDRV_PCM_FORMAT_G723_24)
+#define SNDRV_PCM_FMTBIT_G723_24_1B	(1ULL << SNDRV_PCM_FORMAT_G723_24_1B)
+#define SNDRV_PCM_FMTBIT_G723_40	(1ULL << SNDRV_PCM_FORMAT_G723_40)
+#define SNDRV_PCM_FMTBIT_G723_40_1B	(1ULL << SNDRV_PCM_FORMAT_G723_40_1B)
 
 #ifdef SNDRV_LITTLE_ENDIAN
 #define SNDRV_PCM_FMTBIT_S16		SNDRV_PCM_FMTBIT_S16_LE

sound/core/pcm_misc.c

@@ -128,6 +128,14 @@ static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = {
 		.width = 4, .phys = 4, .le = -1, .signd = -1,
 		.silence = {},
 	},
+	[SNDRV_PCM_FORMAT_G723_24] = {
+		.width = 3, .phys = 3, .le = -1, .signd = -1,
+		.silence = {},
+	},
+	[SNDRV_PCM_FORMAT_G723_40] = {
+		.width = 5, .phys = 5, .le = -1, .signd = -1,
+		.silence = {},
+	},
 	/* FIXME: the following three formats are not defined properly yet */
 	[SNDRV_PCM_FORMAT_MPEG] = {
 		.le = -1, .signd = -1,
@@ -186,6 +194,14 @@ static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = {
 		.width = 18, .phys = 24, .le = 0, .signd = 0,
 		.silence = { 0x02, 0x00, 0x00 },
 	},
+	[SNDRV_PCM_FORMAT_G723_24_1B] = {
+		.width = 3, .phys = 8, .le = -1, .signd = -1,
+		.silence = {},
+	},
+	[SNDRV_PCM_FORMAT_G723_40_1B] = {
+		.width = 5, .phys = 8, .le = -1, .signd = -1,
+		.silence = {},
+	},
 };