diff options
Diffstat (limited to 'sound/core/ump_convert.c')
| -rw-r--r-- | sound/core/ump_convert.c | 80 |
1 files changed, 34 insertions, 46 deletions
diff --git a/sound/core/ump_convert.c b/sound/core/ump_convert.c index 48ab3e1bd62e..fb61df424a87 100644 --- a/sound/core/ump_convert.c +++ b/sound/core/ump_convert.c @@ -8,7 +8,7 @@ #include <sound/core.h> #include <sound/asound.h> #include <sound/ump.h> -#include "ump_convert.h" +#include <sound/ump_convert.h> /* * Upgrade / downgrade value bits @@ -205,12 +205,18 @@ static int cvt_ump_sysex7_to_legacy(const u32 *data, unsigned char *buf) return size; } -/* convert from a UMP packet @data to MIDI 1.0 bytes at @buf; - * the target group is stored at @group_ret, - * returns the number of bytes of MIDI 1.0 stream +/** + * snd_ump_convert_from_ump - convert from UMP to legacy MIDI + * @data: UMP packet + * @buf: buffer to store legacy MIDI data + * @group_ret: pointer to store the target group + * + * Convert from a UMP packet @data to MIDI 1.0 bytes at @buf. + * The target group is stored at @group_ret. + * + * The function returns the number of bytes of MIDI 1.0 stream. */ -int snd_ump_convert_from_ump(struct snd_ump_endpoint *ump, - const u32 *data, +int snd_ump_convert_from_ump(const u32 *data, unsigned char *buf, unsigned char *group_ret) { @@ -230,6 +236,7 @@ int snd_ump_convert_from_ump(struct snd_ump_endpoint *ump, return 0; } +EXPORT_SYMBOL_GPL(snd_ump_convert_from_ump); /* * MIDI 1 byte stream -> UMP conversion @@ -302,10 +309,10 @@ static void fill_rpn(struct ump_cvt_to_ump_bank *cc, } /* convert to a MIDI 1.0 Channel Voice message */ -static int cvt_legacy_cmd_to_ump(struct snd_ump_endpoint *ump, - struct ump_cvt_to_ump *cvt, - unsigned char group, u32 *data, - unsigned char bytes) +static int cvt_legacy_cmd_to_ump(struct ump_cvt_to_ump *cvt, + unsigned char group, + unsigned int protocol, + u32 *data, unsigned char bytes) { const unsigned char *buf = cvt->buf; struct ump_cvt_to_ump_bank *cc; @@ -316,7 +323,7 @@ static int cvt_legacy_cmd_to_ump(struct snd_ump_endpoint *ump, BUILD_BUG_ON(sizeof(union snd_ump_midi2_msg) != 8); /* for MIDI 1.0 UMP, it's easy, just pack it into UMP */ - if (ump->info.protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI1) { + if (protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI1) { data[0] = ump_compose(UMP_MSG_TYPE_MIDI1_CHANNEL_VOICE, group, 0, buf[0]); data[0] |= buf[1] << 8; @@ -413,8 +420,8 @@ static int cvt_legacy_cmd_to_ump(struct snd_ump_endpoint *ump, return 8; } -static int do_convert_to_ump(struct snd_ump_endpoint *ump, - unsigned char group, unsigned char c, u32 *data) +static int do_convert_to_ump(struct ump_cvt_to_ump *cvt, unsigned char group, + unsigned int protocol, unsigned char c, u32 *data) { /* bytes for 0x80-0xf0 */ static unsigned char cmd_bytes[8] = { @@ -424,7 +431,6 @@ static int do_convert_to_ump(struct snd_ump_endpoint *ump, static unsigned char system_bytes[16] = { 0, 2, 3, 2, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1 }; - struct ump_cvt_to_ump *cvt = &ump->out_cvts[group]; unsigned char bytes; if (c == UMP_MIDI1_MSG_SYSEX_START) { @@ -478,40 +484,22 @@ static int do_convert_to_ump(struct snd_ump_endpoint *ump, cvt->len = 1; if ((cvt->buf[0] & 0xf0) == UMP_MIDI1_MSG_REALTIME) return cvt_legacy_system_to_ump(cvt, group, data); - return cvt_legacy_cmd_to_ump(ump, cvt, group, data, cvt->cmd_bytes); + return cvt_legacy_cmd_to_ump(cvt, group, protocol, data, cvt->cmd_bytes); } -/* feed a MIDI 1.0 byte @c and convert to a UMP packet; - * the target group is @group, - * the result is stored in out_cvts[group].ump[] and out_cvts[group].ump_bytes +/** + * snd_ump_convert_to_ump - convert legacy MIDI byte to UMP packet + * @cvt: converter context + * @group: target UMP group + * @protocol: target UMP protocol + * @c: MIDI 1.0 byte data + * + * Feed a MIDI 1.0 byte @c and convert to a UMP packet if completed. + * The result is stored in the buffer in @cvt. */ -void snd_ump_convert_to_ump(struct snd_ump_endpoint *ump, - unsigned char group, unsigned char c) +void snd_ump_convert_to_ump(struct ump_cvt_to_ump *cvt, unsigned char group, + unsigned int protocol, unsigned char c) { - struct ump_cvt_to_ump *cvt = &ump->out_cvts[group]; - - cvt->ump_bytes = do_convert_to_ump(ump, group, c, cvt->ump); -} - -/* reset the converter context, called at each open */ -void snd_ump_reset_convert_to_ump(struct snd_ump_endpoint *ump, - unsigned char group) -{ - memset(&ump->out_cvts[group], 0, sizeof(*ump->out_cvts)); -} - -/* initialize converters */ -int snd_ump_convert_init(struct snd_ump_endpoint *ump) -{ - ump->out_cvts = kcalloc(16, sizeof(*ump->out_cvts), GFP_KERNEL); - if (!ump->out_cvts) - return -ENOMEM; - return 0; -} - -/* release resources */ -void snd_ump_convert_free(struct snd_ump_endpoint *ump) -{ - kfree(ump->out_cvts); - ump->out_cvts = NULL; + cvt->ump_bytes = do_convert_to_ump(cvt, group, protocol, c, cvt->ump); } +EXPORT_SYMBOL_GPL(snd_ump_convert_to_ump); |