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astrand |
963 |
/* -*- c-basic-offset: 8 -*- |
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matthewc |
474 |
rdesktop: A Remote Desktop Protocol client. |
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Sound Channel Process Functions |
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Copyright (C) Matthew Chapman 2003 |
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Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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ossman_ |
1298 |
#include <assert.h> |
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matthewc |
432 |
#include "rdesktop.h" |
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stargo |
1254 |
#include "rdpsnd.h" |
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stargo |
1258 |
#include "rdpsnd_dsp.h" |
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matthewc |
432 |
|
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matthewc |
474 |
#define RDPSND_CLOSE 1 |
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#define RDPSND_WRITE 2 |
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#define RDPSND_SET_VOLUME 3 |
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#define RDPSND_UNKNOWN4 4 |
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#define RDPSND_COMPLETION 5 |
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stargo |
1044 |
#define RDPSND_SERVERTICK 6 |
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matthewc |
474 |
#define RDPSND_NEGOTIATE 7 |
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#define MAX_FORMATS 10 |
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stargo |
1254 |
#define MAX_QUEUE 10 |
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matthewc |
474 |
|
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stargo |
1254 |
BOOL g_dsp_busy = False; |
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int g_dsp_fd; |
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|
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matthewc |
432 |
static VCHANNEL *rdpsnd_channel; |
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stargo |
1255 |
static struct audio_driver *drivers = NULL; |
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stargo |
1256 |
struct audio_driver *current_driver = NULL; |
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matthewc |
432 |
|
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matthewc |
474 |
static BOOL device_open; |
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static WAVEFORMATEX formats[MAX_FORMATS]; |
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static unsigned int format_count; |
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static unsigned int current_format; |
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ossman_ |
1302 |
unsigned int queue_hi, queue_lo, queue_pending; |
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stargo |
1256 |
struct audio_packet packet_queue[MAX_QUEUE]; |
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matthewc |
474 |
|
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stargo |
1255 |
void (*wave_out_play) (void); |
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|
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ossman_ |
1302 |
static void rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index); |
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static void rdpsnd_queue_init(void); |
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static void rdpsnd_queue_complete_pending(void); |
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static long rdpsnd_queue_next_completion(void); |
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astrand |
665 |
static STREAM |
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matthewc |
474 |
rdpsnd_init_packet(uint16 type, uint16 size) |
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{ |
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STREAM s; |
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|
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astrand |
499 |
s = channel_init(rdpsnd_channel, size + 4); |
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matthewc |
474 |
out_uint16_le(s, type); |
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out_uint16_le(s, size); |
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return s; |
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} |
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astrand |
665 |
static void |
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matthewc |
474 |
rdpsnd_send(STREAM s) |
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{ |
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#ifdef RDPSND_DEBUG |
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printf("RDPSND send:\n"); |
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astrand |
499 |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); |
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matthewc |
474 |
#endif |
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channel_send(s, rdpsnd_channel); |
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} |
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ossman_ |
1302 |
static void |
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astrand |
499 |
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
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matthewc |
474 |
{ |
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STREAM s; |
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s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
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stargo |
1254 |
out_uint16_le(s, tick); |
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matthewc |
474 |
out_uint8(s, packet_index); |
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out_uint8(s, 0); |
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s_mark_end(s); |
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rdpsnd_send(s); |
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} |
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astrand |
665 |
static void |
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matthewc |
474 |
rdpsnd_process_negotiate(STREAM in) |
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{ |
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unsigned int in_format_count, i; |
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WAVEFORMATEX *format; |
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STREAM out; |
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stargo |
491 |
BOOL device_available = False; |
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stargo |
493 |
int readcnt; |
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int discardcnt; |
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matthewc |
474 |
|
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in_uint8s(in, 14); /* flags, volume, pitch, UDP port */ |
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in_uint16_le(in, in_format_count); |
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in_uint8s(in, 4); /* pad, status, pad */ |
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|
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stargo |
1255 |
if (current_driver->wave_out_open()) |
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stargo |
491 |
{ |
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stargo |
1255 |
current_driver->wave_out_close(); |
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stargo |
491 |
device_available = True; |
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} |
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matthewc |
474 |
format_count = 0; |
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astrand |
499 |
if (s_check_rem(in, 18 * in_format_count)) |
117 |
matthewc |
474 |
{ |
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for (i = 0; i < in_format_count; i++) |
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{ |
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format = &formats[format_count]; |
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in_uint16_le(in, format->wFormatTag); |
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in_uint16_le(in, format->nChannels); |
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in_uint32_le(in, format->nSamplesPerSec); |
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in_uint32_le(in, format->nAvgBytesPerSec); |
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in_uint16_le(in, format->nBlockAlign); |
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in_uint16_le(in, format->wBitsPerSample); |
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in_uint16_le(in, format->cbSize); |
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stargo |
492 |
/* read in the buffer of unknown use */ |
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stargo |
493 |
readcnt = format->cbSize; |
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discardcnt = 0; |
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stargo |
492 |
if (format->cbSize > MAX_CBSIZE) |
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{ |
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astrand |
499 |
fprintf(stderr, "cbSize too large for buffer: %d\n", |
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format->cbSize); |
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stargo |
492 |
readcnt = MAX_CBSIZE; |
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discardcnt = format->cbSize - MAX_CBSIZE; |
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} |
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in_uint8a(in, format->cb, readcnt); |
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in_uint8s(in, discardcnt); |
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stargo |
1255 |
if (device_available && current_driver->wave_out_format_supported(format)) |
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matthewc |
474 |
{ |
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format_count++; |
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if (format_count == MAX_FORMATS) |
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break; |
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} |
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} |
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} |
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astrand |
499 |
out = rdpsnd_init_packet(RDPSND_NEGOTIATE | 0x200, 20 + 18 * format_count); |
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out_uint32_le(out, 3); /* flags */ |
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matthewc |
474 |
out_uint32(out, 0xffffffff); /* volume */ |
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astrand |
499 |
out_uint32(out, 0); /* pitch */ |
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out_uint16(out, 0); /* UDP port */ |
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matthewc |
474 |
|
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out_uint16_le(out, format_count); |
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astrand |
499 |
out_uint8(out, 0x95); /* pad? */ |
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out_uint16_le(out, 2); /* status */ |
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out_uint8(out, 0x77); /* pad? */ |
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matthewc |
474 |
|
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for (i = 0; i < format_count; i++) |
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{ |
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format = &formats[i]; |
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out_uint16_le(out, format->wFormatTag); |
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out_uint16_le(out, format->nChannels); |
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out_uint32_le(out, format->nSamplesPerSec); |
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out_uint32_le(out, format->nAvgBytesPerSec); |
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out_uint16_le(out, format->nBlockAlign); |
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out_uint16_le(out, format->wBitsPerSample); |
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astrand |
499 |
out_uint16(out, 0); /* cbSize */ |
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matthewc |
474 |
} |
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s_mark_end(out); |
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rdpsnd_send(out); |
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} |
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|
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astrand |
665 |
static void |
179 |
stargo |
1044 |
rdpsnd_process_servertick(STREAM in) |
180 |
matthewc |
474 |
{ |
181 |
stargo |
1044 |
uint16 tick1, tick2; |
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matthewc |
474 |
STREAM out; |
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/* in_uint8s(in, 4); unknown */ |
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stargo |
1044 |
in_uint16_le(in, tick1); |
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in_uint16_le(in, tick2); |
187 |
matthewc |
474 |
|
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stargo |
1044 |
out = rdpsnd_init_packet(RDPSND_SERVERTICK | 0x2300, 4); |
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out_uint16_le(out, tick1); |
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out_uint16_le(out, tick2); |
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matthewc |
474 |
s_mark_end(out); |
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rdpsnd_send(out); |
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} |
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astrand |
665 |
static void |
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matthewc |
432 |
rdpsnd_process(STREAM s) |
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{ |
198 |
matthewc |
474 |
uint8 type; |
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uint16 datalen; |
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stargo |
491 |
uint32 volume; |
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matthewc |
474 |
static uint16 tick, format; |
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static uint8 packet_index; |
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static BOOL awaiting_data_packet; |
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stargo |
1265 |
static unsigned char missing_bytes[4] = { 0, 0, 0, 0 }; |
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matthewc |
474 |
|
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#ifdef RDPSND_DEBUG |
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printf("RDPSND recv:\n"); |
208 |
astrand |
499 |
hexdump(s->p, s->end - s->p); |
209 |
matthewc |
474 |
#endif |
210 |
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if (awaiting_data_packet) |
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{ |
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if (format >= MAX_FORMATS) |
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{ |
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error("RDPSND: Invalid format index\n"); |
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return; |
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} |
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if (!device_open || (format != current_format)) |
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{ |
221 |
stargo |
1255 |
if (!device_open && !current_driver->wave_out_open()) |
222 |
matthewc |
474 |
{ |
223 |
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rdpsnd_send_completion(tick, packet_index); |
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return; |
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} |
226 |
stargo |
1255 |
if (!current_driver->wave_out_set_format(&formats[format])) |
227 |
matthewc |
474 |
{ |
228 |
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rdpsnd_send_completion(tick, packet_index); |
229 |
stargo |
1255 |
current_driver->wave_out_close(); |
230 |
matthewc |
474 |
device_open = False; |
231 |
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return; |
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} |
233 |
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device_open = True; |
234 |
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current_format = format; |
235 |
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} |
236 |
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|
237 |
stargo |
1265 |
/* Insert the 4 missing bytes retrieved from last RDPSND_WRITE */ |
238 |
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memcpy(s->data, missing_bytes, 4); |
239 |
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|
240 |
ossman_ |
1302 |
rdpsnd_queue_write(rdpsnd_dsp_process |
241 |
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(s, current_driver, &formats[current_format]), tick, |
242 |
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packet_index); |
243 |
matthewc |
474 |
awaiting_data_packet = False; |
244 |
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return; |
245 |
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} |
246 |
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|
247 |
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in_uint8(s, type); |
248 |
astrand |
499 |
in_uint8s(s, 1); /* unknown? */ |
249 |
matthewc |
474 |
in_uint16_le(s, datalen); |
250 |
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251 |
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switch (type) |
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{ |
253 |
astrand |
499 |
case RDPSND_WRITE: |
254 |
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in_uint16_le(s, tick); |
255 |
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in_uint16_le(s, format); |
256 |
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in_uint8(s, packet_index); |
257 |
stargo |
1265 |
/* Here are our lost bytes, but why? */ |
258 |
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memcpy(missing_bytes, s->end - 4, 4); |
259 |
astrand |
499 |
awaiting_data_packet = True; |
260 |
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break; |
261 |
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case RDPSND_CLOSE: |
262 |
stargo |
1255 |
current_driver->wave_out_close(); |
263 |
astrand |
499 |
device_open = False; |
264 |
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break; |
265 |
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case RDPSND_NEGOTIATE: |
266 |
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rdpsnd_process_negotiate(s); |
267 |
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break; |
268 |
stargo |
1044 |
case RDPSND_SERVERTICK: |
269 |
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rdpsnd_process_servertick(s); |
270 |
astrand |
499 |
break; |
271 |
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case RDPSND_SET_VOLUME: |
272 |
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in_uint32(s, volume); |
273 |
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if (device_open) |
274 |
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{ |
275 |
stargo |
1255 |
current_driver->wave_out_volume((volume & 0xffff), |
276 |
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(volume & 0xffff0000) >> 16); |
277 |
astrand |
499 |
} |
278 |
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break; |
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default: |
280 |
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unimpl("RDPSND packet type %d\n", type); |
281 |
|
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break; |
282 |
matthewc |
474 |
} |
283 |
matthewc |
432 |
} |
284 |
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|
285 |
stargo |
1274 |
static BOOL |
286 |
stargo |
1255 |
rdpsnd_auto_open(void) |
287 |
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{ |
288 |
stargo |
1271 |
static BOOL failed = False; |
289 |
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|
290 |
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if (!failed) |
291 |
stargo |
1255 |
{ |
292 |
stargo |
1271 |
struct audio_driver *auto_driver = current_driver; |
293 |
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|
294 |
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current_driver = drivers; |
295 |
|
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while (current_driver != NULL) |
296 |
stargo |
1255 |
{ |
297 |
stargo |
1271 |
DEBUG(("trying %s...\n", current_driver->name)); |
298 |
|
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if (current_driver->wave_out_open()) |
299 |
|
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{ |
300 |
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DEBUG(("selected %s\n", current_driver->name)); |
301 |
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return True; |
302 |
|
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} |
303 |
|
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g_dsp_fd = 0; |
304 |
|
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current_driver = current_driver->next; |
305 |
stargo |
1255 |
} |
306 |
stargo |
1271 |
|
307 |
|
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warning("no working audio-driver found\n"); |
308 |
|
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failed = True; |
309 |
|
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current_driver = auto_driver; |
310 |
stargo |
1255 |
} |
311 |
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|
312 |
|
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return False; |
313 |
|
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} |
314 |
|
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|
315 |
stargo |
1274 |
static void |
316 |
stargo |
1255 |
rdpsnd_register_drivers(char *options) |
317 |
|
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{ |
318 |
|
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struct audio_driver **reg; |
319 |
|
|
|
320 |
|
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/* The order of registrations define the probe-order |
321 |
|
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when opening the device for the first time */ |
322 |
|
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reg = &drivers; |
323 |
|
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#if defined(RDPSND_ALSA) |
324 |
|
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*reg = alsa_register(options); |
325 |
ossman_ |
1298 |
assert(*reg); |
326 |
stargo |
1255 |
reg = &((*reg)->next); |
327 |
|
|
#endif |
328 |
stargo |
1264 |
#if defined(RDPSND_SUN) |
329 |
|
|
*reg = sun_register(options); |
330 |
ossman_ |
1298 |
assert(*reg); |
331 |
stargo |
1264 |
reg = &((*reg)->next); |
332 |
|
|
#endif |
333 |
stargo |
1255 |
#if defined(RDPSND_OSS) |
334 |
|
|
*reg = oss_register(options); |
335 |
ossman_ |
1298 |
assert(*reg); |
336 |
stargo |
1255 |
reg = &((*reg)->next); |
337 |
|
|
#endif |
338 |
|
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#if defined(RDPSND_SGI) |
339 |
|
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*reg = sgi_register(options); |
340 |
ossman_ |
1298 |
assert(*reg); |
341 |
stargo |
1255 |
reg = &((*reg)->next); |
342 |
|
|
#endif |
343 |
|
|
#if defined(RDPSND_LIBAO) |
344 |
|
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*reg = libao_register(options); |
345 |
ossman_ |
1302 |
assert(*reg); |
346 |
stargo |
1255 |
reg = &((*reg)->next); |
347 |
|
|
#endif |
348 |
|
|
} |
349 |
|
|
|
350 |
|
|
BOOL |
351 |
stargo |
1272 |
rdpsnd_init(char *optarg) |
352 |
stargo |
1255 |
{ |
353 |
|
|
static struct audio_driver auto_driver; |
354 |
|
|
struct audio_driver *pos; |
355 |
stargo |
1272 |
char *driver = NULL, *options = NULL; |
356 |
stargo |
1255 |
|
357 |
|
|
drivers = NULL; |
358 |
stargo |
1272 |
|
359 |
|
|
rdpsnd_channel = |
360 |
|
|
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
361 |
|
|
rdpsnd_process); |
362 |
|
|
|
363 |
|
|
if (rdpsnd_channel == NULL) |
364 |
|
|
{ |
365 |
|
|
error("channel_register\n"); |
366 |
|
|
return False; |
367 |
|
|
} |
368 |
|
|
|
369 |
ossman_ |
1302 |
rdpsnd_queue_init(); |
370 |
|
|
|
371 |
stargo |
1272 |
if (optarg != NULL && strlen(optarg) > 0) |
372 |
|
|
{ |
373 |
|
|
driver = options = optarg; |
374 |
|
|
|
375 |
|
|
while (*options != '\0' && *options != ':') |
376 |
|
|
options++; |
377 |
|
|
|
378 |
|
|
if (*options == ':') |
379 |
|
|
{ |
380 |
|
|
*options = '\0'; |
381 |
|
|
options++; |
382 |
|
|
} |
383 |
|
|
|
384 |
|
|
if (*options == '\0') |
385 |
|
|
options = NULL; |
386 |
|
|
} |
387 |
|
|
|
388 |
stargo |
1255 |
rdpsnd_register_drivers(options); |
389 |
|
|
|
390 |
|
|
if (!driver) |
391 |
|
|
{ |
392 |
|
|
auto_driver.wave_out_open = &rdpsnd_auto_open; |
393 |
|
|
current_driver = &auto_driver; |
394 |
|
|
return True; |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
pos = drivers; |
398 |
|
|
while (pos != NULL) |
399 |
|
|
{ |
400 |
|
|
if (!strcmp(pos->name, driver)) |
401 |
|
|
{ |
402 |
|
|
DEBUG(("selected %s\n", pos->name)); |
403 |
|
|
current_driver = pos; |
404 |
|
|
return True; |
405 |
|
|
} |
406 |
|
|
pos = pos->next; |
407 |
|
|
} |
408 |
|
|
return False; |
409 |
|
|
} |
410 |
|
|
|
411 |
|
|
void |
412 |
|
|
rdpsnd_show_help(void) |
413 |
|
|
{ |
414 |
|
|
struct audio_driver *pos; |
415 |
|
|
|
416 |
|
|
rdpsnd_register_drivers(NULL); |
417 |
|
|
|
418 |
|
|
pos = drivers; |
419 |
|
|
while (pos != NULL) |
420 |
|
|
{ |
421 |
|
|
fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
422 |
|
|
pos = pos->next; |
423 |
|
|
} |
424 |
|
|
} |
425 |
|
|
|
426 |
stargo |
1273 |
void |
427 |
stargo |
1255 |
rdpsnd_play(void) |
428 |
|
|
{ |
429 |
|
|
current_driver->wave_out_play(); |
430 |
|
|
} |
431 |
|
|
|
432 |
ossman_ |
1299 |
void |
433 |
ossman_ |
1302 |
rdpsnd_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
434 |
|
|
{ |
435 |
|
|
long next_pending; |
436 |
|
|
|
437 |
|
|
if (g_dsp_busy) |
438 |
|
|
{ |
439 |
|
|
FD_SET(g_dsp_fd, wfds); |
440 |
|
|
*n = (g_dsp_fd > *n) ? g_dsp_fd : *n; |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
next_pending = rdpsnd_queue_next_completion(); |
444 |
|
|
if (next_pending >= 0) |
445 |
|
|
{ |
446 |
|
|
long cur_timeout; |
447 |
|
|
|
448 |
|
|
cur_timeout = tv->tv_sec * 1000000 + tv->tv_usec; |
449 |
|
|
if (cur_timeout > next_pending) |
450 |
|
|
{ |
451 |
|
|
tv->tv_sec = next_pending / 1000000; |
452 |
|
|
tv->tv_usec = next_pending % 1000000; |
453 |
|
|
} |
454 |
|
|
} |
455 |
|
|
} |
456 |
|
|
|
457 |
|
|
void |
458 |
|
|
rdpsnd_check_fds(fd_set * rfds, fd_set * wfds) |
459 |
|
|
{ |
460 |
|
|
rdpsnd_queue_complete_pending(); |
461 |
|
|
|
462 |
|
|
if (g_dsp_busy && FD_ISSET(g_dsp_fd, wfds)) |
463 |
|
|
rdpsnd_play(); |
464 |
|
|
} |
465 |
|
|
|
466 |
|
|
static void |
467 |
stargo |
1254 |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
468 |
|
|
{ |
469 |
|
|
struct audio_packet *packet = &packet_queue[queue_hi]; |
470 |
|
|
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
471 |
|
|
|
472 |
ossman_ |
1302 |
if (next_hi == queue_pending) |
473 |
stargo |
1254 |
{ |
474 |
|
|
error("No space to queue audio packet\n"); |
475 |
|
|
return; |
476 |
|
|
} |
477 |
|
|
|
478 |
|
|
queue_hi = next_hi; |
479 |
|
|
|
480 |
|
|
packet->s = *s; |
481 |
|
|
packet->tick = tick; |
482 |
|
|
packet->index = index; |
483 |
|
|
|
484 |
ossman_ |
1302 |
gettimeofday(&packet->arrive_tv, NULL); |
485 |
|
|
|
486 |
stargo |
1254 |
if (!g_dsp_busy) |
487 |
stargo |
1255 |
current_driver->wave_out_play(); |
488 |
stargo |
1254 |
} |
489 |
|
|
|
490 |
ossman_ |
1299 |
struct audio_packet * |
491 |
stargo |
1254 |
rdpsnd_queue_current_packet(void) |
492 |
|
|
{ |
493 |
|
|
return &packet_queue[queue_lo]; |
494 |
|
|
} |
495 |
|
|
|
496 |
ossman_ |
1299 |
BOOL |
497 |
stargo |
1254 |
rdpsnd_queue_empty(void) |
498 |
|
|
{ |
499 |
|
|
return (queue_lo == queue_hi); |
500 |
|
|
} |
501 |
|
|
|
502 |
ossman_ |
1302 |
static void |
503 |
stargo |
1254 |
rdpsnd_queue_init(void) |
504 |
|
|
{ |
505 |
ossman_ |
1302 |
queue_pending = queue_lo = queue_hi = 0; |
506 |
stargo |
1254 |
} |
507 |
|
|
|
508 |
ossman_ |
1299 |
void |
509 |
ossman_ |
1302 |
rdpsnd_queue_next(unsigned long completed_in_us) |
510 |
stargo |
1254 |
{ |
511 |
ossman_ |
1302 |
struct audio_packet *packet; |
512 |
|
|
|
513 |
|
|
assert(!rdpsnd_queue_empty()); |
514 |
|
|
|
515 |
|
|
packet = &packet_queue[queue_lo]; |
516 |
|
|
|
517 |
|
|
gettimeofday(&packet->completion_tv, NULL); |
518 |
|
|
|
519 |
|
|
packet->completion_tv.tv_usec += completed_in_us; |
520 |
|
|
packet->completion_tv.tv_sec += packet->completion_tv.tv_usec / 1000000; |
521 |
|
|
packet->completion_tv.tv_usec %= 1000000; |
522 |
|
|
|
523 |
stargo |
1254 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
524 |
ossman_ |
1302 |
|
525 |
|
|
rdpsnd_queue_complete_pending(); |
526 |
stargo |
1254 |
} |
527 |
|
|
|
528 |
ossman_ |
1299 |
int |
529 |
stargo |
1254 |
rdpsnd_queue_next_tick(void) |
530 |
|
|
{ |
531 |
|
|
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
532 |
|
|
{ |
533 |
|
|
return packet_queue[(queue_lo + 1) % MAX_QUEUE].tick; |
534 |
|
|
} |
535 |
|
|
else |
536 |
|
|
{ |
537 |
|
|
return (packet_queue[queue_lo].tick + 65535) % 65536; |
538 |
|
|
} |
539 |
|
|
} |
540 |
ossman_ |
1302 |
|
541 |
|
|
static void |
542 |
|
|
rdpsnd_queue_complete_pending(void) |
543 |
|
|
{ |
544 |
|
|
struct timeval now; |
545 |
|
|
long elapsed; |
546 |
|
|
struct audio_packet *packet; |
547 |
|
|
|
548 |
|
|
gettimeofday(&now, NULL); |
549 |
|
|
|
550 |
|
|
while (queue_pending != queue_lo) |
551 |
|
|
{ |
552 |
|
|
packet = &packet_queue[queue_pending]; |
553 |
|
|
|
554 |
|
|
if (now.tv_sec < packet->completion_tv.tv_sec) |
555 |
|
|
break; |
556 |
|
|
|
557 |
|
|
if ((now.tv_sec == packet->completion_tv.tv_sec) && |
558 |
|
|
(now.tv_usec < packet->completion_tv.tv_usec)) |
559 |
|
|
break; |
560 |
|
|
|
561 |
|
|
elapsed = (packet->completion_tv.tv_sec - packet->arrive_tv.tv_sec) * 1000000 + |
562 |
|
|
(packet->completion_tv.tv_usec - packet->arrive_tv.tv_usec); |
563 |
|
|
|
564 |
|
|
xfree(packet->s.data); |
565 |
|
|
rdpsnd_send_completion((packet->tick + elapsed) % 65536, packet->index); |
566 |
|
|
queue_pending = (queue_pending + 1) % MAX_QUEUE; |
567 |
|
|
} |
568 |
|
|
} |
569 |
|
|
|
570 |
|
|
static long |
571 |
|
|
rdpsnd_queue_next_completion(void) |
572 |
|
|
{ |
573 |
|
|
struct audio_packet *packet; |
574 |
|
|
long remaining; |
575 |
|
|
struct timeval now; |
576 |
|
|
|
577 |
|
|
if (queue_pending == queue_lo) |
578 |
|
|
return -1; |
579 |
|
|
|
580 |
|
|
gettimeofday(&now, NULL); |
581 |
|
|
|
582 |
|
|
packet = &packet_queue[queue_pending]; |
583 |
|
|
|
584 |
|
|
remaining = (packet->completion_tv.tv_sec - now.tv_sec) * 1000000 + |
585 |
|
|
(packet->completion_tv.tv_usec - now.tv_usec); |
586 |
|
|
|
587 |
|
|
if (remaining < 0) |
588 |
|
|
return 0; |
589 |
|
|
|
590 |
|
|
return remaining; |
591 |
|
|
} |