diff options
| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2023-01-09 11:17:37 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-01-09 17:04:44 +0100 |
| commit | 0cac60c776a6bd15fbadc1c6c5c079b9a0c39634 (patch) | |
| tree | 0c4a7f7823d76a4fd9bcc78a6e737ad947e8bc80 /sound/firewire/amdtp-am824.c | |
| parent | cec371ff1ab18ddd23ac483e7689d0819c09bf7b (diff) | |
ALSA: firewire-lib: use circular linked list for context payload processing layer
The list of packet descriptor is passed to context payload processing
layer so that each driver can copy PCM frames, MIDI messages, and device
specific data between packet payload buffer and intermediate buffer for
user space application.
The list of packet descriptor was replaced by circular linked list in a
previous commit. This commit uses circular linked in context payload
processing layer as well.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230109021738.75543-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/amdtp-am824.c')
| -rw-r--r-- | sound/firewire/amdtp-am824.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/sound/firewire/amdtp-am824.c b/sound/firewire/amdtp-am824.c index d9c700f652bb..cf55f7784d23 100644 --- a/sound/firewire/amdtp-am824.c +++ b/sound/firewire/amdtp-am824.c @@ -347,16 +347,15 @@ static void read_midi_messages(struct amdtp_stream *s, __be32 *buffer, } static unsigned int process_it_ctx_payloads(struct amdtp_stream *s, - const struct pkt_desc *descs, - unsigned int packets, + const struct pkt_desc *desc, + unsigned int count, struct snd_pcm_substream *pcm) { struct amdtp_am824 *p = s->protocol; unsigned int pcm_frames = 0; int i; - for (i = 0; i < packets; ++i) { - const struct pkt_desc *desc = descs + i; + for (i = 0; i < count; ++i) { __be32 *buf = desc->ctx_payload; unsigned int data_blocks = desc->data_blocks; @@ -371,22 +370,23 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s, write_midi_messages(s, buf, data_blocks, desc->data_block_counter); } + + desc = amdtp_stream_next_packet_desc(s, desc); } return pcm_frames; } static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s, - const struct pkt_desc *descs, - unsigned int packets, + const struct pkt_desc *desc, + unsigned int count, struct snd_pcm_substream *pcm) { struct amdtp_am824 *p = s->protocol; unsigned int pcm_frames = 0; int i; - for (i = 0; i < packets; ++i) { - const struct pkt_desc *desc = descs + i; + for (i = 0; i < count; ++i) { __be32 *buf = desc->ctx_payload; unsigned int data_blocks = desc->data_blocks; @@ -399,6 +399,8 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s, read_midi_messages(s, buf, data_blocks, desc->data_block_counter); } + + desc = amdtp_stream_next_packet_desc(s, desc); } return pcm_frames; |