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frame size fixes

This commit is contained in:
Šerif Rami 2026-01-07 12:54:04 +01:00
parent c379dc65c1
commit e12821f31c
3 changed files with 10 additions and 9 deletions
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7
us144mkii.h
View File

@ -68,15 +68,16 @@ enum tascam_register {
#define NUM_FEEDBACK_URBS 4
#define FEEDBACK_URB_PACKETS 1
#define FEEDBACK_PACKET_SIZE 3
#define NUM_CAPTURE_URBS 8
#define CAPTURE_PACKET_SIZE 4096
#define NUM_CAPTURE_URBS 32
#define CAPTURE_PACKET_SIZE 512
#define MIDI_PACKET_SIZE 9
#define MIDI_PAYLOAD_SIZE 8
#define BYTES_PER_SAMPLE 3
#define NUM_CHANNELS 4
#define BYTES_PER_FRAME (NUM_CHANNELS * BYTES_PER_SAMPLE)
#define PLAYBACK_FRAME_SIZE (NUM_CHANNELS * BYTES_PER_SAMPLE)
#define PLL_FILTER_OLD_WEIGHT 3
#define PLL_FILTER_NEW_WEIGHT 1

4
us144mkii_capture.c
View File

@ -16,8 +16,8 @@ const struct snd_pcm_hardware tascam_capture_hw = {
.channels_min = NUM_CHANNELS,
.channels_max = NUM_CHANNELS,
.buffer_bytes_max = 1024 * 1024,
.period_bytes_min = 48 * BYTES_PER_FRAME,
.period_bytes_max = 1024 * BYTES_PER_FRAME,
.period_bytes_min = 768,
.period_bytes_max = 1024 * 1024,
.periods_min = 2,
.periods_max = 1024,
};

8
us144mkii_playback.c
View File

@ -15,8 +15,8 @@ const struct snd_pcm_hardware tascam_playback_hw = {
.channels_min = NUM_CHANNELS,
.channels_max = NUM_CHANNELS,
.buffer_bytes_max = 1024 * 1024,
.period_bytes_min = 48 * BYTES_PER_FRAME,
.period_bytes_max = 1024 * BYTES_PER_FRAME,
.period_bytes_min = 576,
.period_bytes_max = 1024 * 1024,
.periods_min = 2,
.periods_max = 1024,
};
@ -49,7 +49,7 @@ static int tascam_playback_prepare(struct snd_pcm_substream *substream)
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int i, u;
size_t nominal_bytes = (runtime->rate / 8000) * BYTES_PER_FRAME;
size_t nominal_bytes = (runtime->rate / 8000) * PLAYBACK_FRAME_SIZE;
usb_kill_anchored_urbs(&tascam->playback_anchor);
usb_kill_anchored_urbs(&tascam->feedback_anchor);
@ -246,7 +246,7 @@ void playback_urb_complete(struct urb *urb)
frames_for_packet = 13;
urb->iso_frame_desc[i].offset = total_bytes_for_urb;
urb->iso_frame_desc[i].length = frames_for_packet * BYTES_PER_FRAME;
urb->iso_frame_desc[i].length = frames_for_packet * PLAYBACK_FRAME_SIZE;
total_bytes_for_urb += urb->iso_frame_desc[i].length;
}
urb->transfer_buffer_length = total_bytes_for_urb;