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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2019-07-22 06:37:05 +0300
committerTakashi Iwai <tiwai@suse.de>2019-07-22 17:05:09 +0300
commitbb473966774a79ae9a826f721059496d9b393acc (patch)
tree87aaec988988f893b723a898d512fb5dd4f929b9 /sound/firewire/digi00x
parent9fc90644cae9c0abfcce0576ed0a14cca67f69b9 (diff)
downloadlinux-bb473966774a79ae9a826f721059496d9b393acc.tar.xz
ALSA: firewire-digi00x: code refactoring for DOT data block processing layer
This is code refactoring for DOT data block processing layer so that it can receive list of packet descriptor. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/digi00x')
-rw-r--r--sound/firewire/digi00x/amdtp-dot.c45
1 files changed, 28 insertions, 17 deletions
diff --git a/sound/firewire/digi00x/amdtp-dot.c b/sound/firewire/digi00x/amdtp-dot.c
index 83ac4b37f26d..cef5caf97236 100644
--- a/sound/firewire/digi00x/amdtp-dot.c
+++ b/sound/firewire/digi00x/amdtp-dot.c
@@ -143,17 +143,23 @@ int amdtp_dot_set_parameters(struct amdtp_stream *s, unsigned int rate,
}
static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
- __be32 *buffer, unsigned int frames)
+ __be32 *buffer, unsigned int frames,
+ unsigned int pcm_frames)
{
struct amdtp_dot *p = s->protocol;
+ unsigned int channels = p->pcm_channels;
struct snd_pcm_runtime *runtime = pcm->runtime;
- unsigned int channels, remaining_frames, i, c;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
const u32 *src;
+ int i, c;
+
+ pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames;
+ pcm_buffer_pointer %= runtime->buffer_size;
- channels = p->pcm_channels;
src = (void *)runtime->dma_area +
- frames_to_bytes(runtime, s->pcm_buffer_pointer);
- remaining_frames = runtime->buffer_size - s->pcm_buffer_pointer;
+ frames_to_bytes(runtime, pcm_buffer_pointer);
+ remaining_frames = runtime->buffer_size - pcm_buffer_pointer;
buffer++;
for (i = 0; i < frames; ++i) {
@@ -169,17 +175,23 @@ static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
}
static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
- __be32 *buffer, unsigned int frames)
+ __be32 *buffer, unsigned int frames,
+ unsigned int pcm_frames)
{
struct amdtp_dot *p = s->protocol;
+ unsigned int channels = p->pcm_channels;
struct snd_pcm_runtime *runtime = pcm->runtime;
- unsigned int channels, remaining_frames, i, c;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
u32 *dst;
+ int i, c;
+
+ pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames;
+ pcm_buffer_pointer %= runtime->buffer_size;
- channels = p->pcm_channels;
dst = (void *)runtime->dma_area +
- frames_to_bytes(runtime, s->pcm_buffer_pointer);
- remaining_frames = runtime->buffer_size - s->pcm_buffer_pointer;
+ frames_to_bytes(runtime, pcm_buffer_pointer);
+ remaining_frames = runtime->buffer_size - pcm_buffer_pointer;
buffer++;
for (i = 0; i < frames; ++i) {
@@ -333,13 +345,12 @@ static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
const struct pkt_desc *desc,
struct snd_pcm_substream *pcm)
{
- unsigned int pcm_frames;
+ unsigned int pcm_frames = 0;
if (pcm) {
- read_pcm_s32(s, pcm, desc->ctx_payload, desc->data_blocks);
+ read_pcm_s32(s, pcm, desc->ctx_payload, desc->data_blocks,
+ pcm_frames);
pcm_frames = desc->data_blocks;
- } else {
- pcm_frames = 0;
}
read_midi_messages(s, desc->ctx_payload, desc->data_blocks);
@@ -351,14 +362,14 @@ static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
const struct pkt_desc *desc,
struct snd_pcm_substream *pcm)
{
- unsigned int pcm_frames;
+ unsigned int pcm_frames = 0;
if (pcm) {
- write_pcm_s32(s, pcm, desc->ctx_payload, desc->data_blocks);
+ write_pcm_s32(s, pcm, desc->ctx_payload, desc->data_blocks,
+ pcm_frames);
pcm_frames = desc->data_blocks;
} else {
write_pcm_silence(s, desc->ctx_payload, desc->data_blocks);
- pcm_frames = 0;
}
write_midi_messages(s, desc->ctx_payload, desc->data_blocks,