dengweijie/lib_xua
1
0
Fork 0
forked from PAWPAW-Mirror/lib_xua
Code Pull Requests Activity

Don't store length of the buffer in the buffer itself.

Browse Source 
This is pointless as nothing ever reads it.
This commit is contained in:
Richard Osborne
2013-12-02 16:39:41 +00:00
parent e56b271e0c
commit 662ac7df58
1 changed files with 6 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
module_usb_audio/usb_buffer/usb_buffer.xc
View File

@@ -54,9 +54,9 @@ static inline void swap(xc_ptr &a, xc_ptr &b)
#endif
#ifdef MIDI
static unsigned int g_midi_to_host_buffer_A[MAX_USB_MIDI_PACKET_SIZE/4+4];
static unsigned int g_midi_to_host_buffer_B[MAX_USB_MIDI_PACKET_SIZE/4+4];
static unsigned int g_midi_from_host_buffer[MAX_USB_MIDI_PACKET_SIZE/4+4];
static unsigned int g_midi_to_host_buffer_A[MAX_USB_MIDI_PACKET_SIZE/4];
static unsigned int g_midi_to_host_buffer_B[MAX_USB_MIDI_PACKET_SIZE/4];
static unsigned int g_midi_from_host_buffer[MAX_USB_MIDI_PACKET_SIZE/4];
#endif
#ifdef IAP
@@ -511,14 +511,11 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
/* The buffer has been sent to the host, so we can ack the midi thread */
if (midi_data_collected_from_device != 0)
{
/* We have some more data to send set the amount of data to send */
write_via_xc_ptr(midi_to_host_buffer_being_collected, midi_data_collected_from_device);
/* Swap the collecting and sending buffer */
swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
/* Request to send packet */
XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent+4, midi_data_collected_from_device);
XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent, midi_data_collected_from_device);
/* Mark as waiting for host to poll us */
midi_waiting_on_send_to_host = 1;
@@ -616,7 +613,7 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
if (midi_data_collected_from_device < MIDI_USB_BUFFER_TO_HOST_SIZE)
{
/* There is room in the collecting buffer for the data */
xc_ptr p = (midi_to_host_buffer_being_collected + 4) + midi_data_collected_from_device;
xc_ptr p = midi_to_host_buffer_being_collected + midi_data_collected_from_device;
// Add data to the buffer
write_via_xc_ptr(p, datum);
midi_data_collected_from_device += 4;
@@ -629,12 +626,10 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
// If we are not sending data to the host then initiate it
if (!midi_waiting_on_send_to_host)
{
write_via_xc_ptr(midi_to_host_buffer_being_collected, midi_data_collected_from_device);
swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
// Signal other side to swap
XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent+4, midi_data_collected_from_device);
XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent, midi_data_collected_from_device);
midi_data_collected_from_device = 0;
midi_waiting_on_send_to_host = 1;
}