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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2019-07-22 12:36:58 +0900
committerTakashi Iwai <tiwai@suse.de>2019-07-22 16:05:03 +0200
commit04130cf8e296bfbd65d2673a5975bd0f200b941d (patch)
treec17f43ede20c8685af5e206f623586e17d6ffb16 /sound/firewire/amdtp-stream.h
parent600c8018df605a91575aef6811cf927e2d933d30 (diff)
ALSA: firewire-lib: add list of packet descriptor
In current implementation of ALSA IEC 61883-1/6 packet streaming engine, 16 packets are handled in one interrupt of isochronous context of OHCI 1394. Overall packet processing runs for each. However, this is not better in a point to split the processing into several parts. This commit is an attempt to add intermediate representation for parameters required for the parts. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/amdtp-stream.h')
-rw-r--r--sound/firewire/amdtp-stream.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h
index 5996cc60f166..73c492c9a5d5 100644
--- a/sound/firewire/amdtp-stream.h
+++ b/sound/firewire/amdtp-stream.h
@@ -94,6 +94,14 @@ enum amdtp_stream_direction {
AMDTP_IN_STREAM
};
+struct pkt_desc {
+ u32 cycle;
+ u32 syt;
+ unsigned int data_blocks;
+ unsigned int data_block_counter;
+ __be32 *ctx_payload;
+};
+
struct amdtp_stream;
typedef unsigned int (*amdtp_stream_process_data_blocks_t)(
struct amdtp_stream *s,
@@ -110,6 +118,7 @@ struct amdtp_stream {
struct fw_iso_context *context;
struct iso_packets_buffer buffer;
int packet_index;
+ struct pkt_desc *pkt_descs;
int tag;
union {
struct {