| 1 |
/* -*- c-basic-offset: 8 -*- |
| 2 |
rdesktop: A Remote Desktop Protocol client. |
| 3 |
Sound Channel Process Functions |
| 4 |
Copyright 2006-2007 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| 5 |
Copyright (C) Matthew Chapman 2003-2007 |
| 6 |
Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
| 7 |
|
| 8 |
This program is free software; you can redistribute it and/or modify |
| 9 |
it under the terms of the GNU General Public License as published by |
| 10 |
the Free Software Foundation; either version 2 of the License, or |
| 11 |
(at your option) any later version. |
| 12 |
|
| 13 |
This program is distributed in the hope that it will be useful, |
| 14 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
GNU General Public License for more details. |
| 17 |
|
| 18 |
You should have received a copy of the GNU General Public License |
| 19 |
along with this program; if not, write to the Free Software |
| 20 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 |
*/ |
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|
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#include <assert.h> |
| 24 |
|
| 25 |
#include "rdesktop.h" |
| 26 |
#include "rdpsnd.h" |
| 27 |
#include "rdpsnd_dsp.h" |
| 28 |
|
| 29 |
#define RDPSND_CLOSE 1 |
| 30 |
#define RDPSND_WRITE 2 |
| 31 |
#define RDPSND_SET_VOLUME 3 |
| 32 |
#define RDPSND_UNKNOWN4 4 |
| 33 |
#define RDPSND_COMPLETION 5 |
| 34 |
#define RDPSND_PING 6 |
| 35 |
#define RDPSND_NEGOTIATE 7 |
| 36 |
|
| 37 |
#define RDPSND_REC_NEGOTIATE 39 |
| 38 |
#define RDPSND_REC_START 40 |
| 39 |
#define RDPSND_REC_STOP 41 |
| 40 |
#define RDPSND_REC_DATA 42 |
| 41 |
#define RDPSND_REC_SET_VOLUME 43 |
| 42 |
|
| 43 |
#define RDPSND_FLAG_RECORD 0x00800000 |
| 44 |
|
| 45 |
#define MAX_FORMATS 10 |
| 46 |
#define MAX_QUEUE 50 |
| 47 |
|
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static VCHANNEL *rdpsnd_channel; |
| 49 |
static VCHANNEL *rdpsnddbg_channel; |
| 50 |
static struct audio_driver *drivers = NULL; |
| 51 |
struct audio_driver *current_driver = NULL; |
| 52 |
|
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static RD_BOOL device_open; |
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static RD_BOOL rec_device_open; |
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|
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static RD_WAVEFORMATEX formats[MAX_FORMATS]; |
| 57 |
static unsigned int format_count; |
| 58 |
static unsigned int current_format; |
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|
| 60 |
static RD_WAVEFORMATEX rec_formats[MAX_FORMATS]; |
| 61 |
static unsigned int rec_format_count; |
| 62 |
|
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unsigned int queue_hi, queue_lo, queue_pending; |
| 64 |
struct audio_packet packet_queue[MAX_QUEUE]; |
| 65 |
|
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static char record_buffer[8192]; |
| 67 |
static uint32 record_buffer_size; |
| 68 |
|
| 69 |
static uint8 packet_opcode; |
| 70 |
static struct stream packet; |
| 71 |
|
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void (*wave_out_play) (void); |
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|
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static void rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index); |
| 75 |
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); |
| 78 |
|
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static STREAM |
| 80 |
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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s = channel_init(rdpsnd_channel, size + 4); |
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out_uint16_le(s, type); |
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out_uint16_le(s, size); |
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return s; |
| 88 |
} |
| 89 |
|
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static void |
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rdpsnd_send(STREAM s) |
| 92 |
{ |
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channel_send(s, rdpsnd_channel); |
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} |
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|
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static void |
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rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
| 98 |
{ |
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STREAM s; |
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|
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s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
| 102 |
out_uint16_le(s, tick); |
| 103 |
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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DEBUG_SOUND(("RDPSND: -> RDPSND_COMPLETION(tick: %u, index: %u)\n", |
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(unsigned) tick, (unsigned) packet_index)); |
| 110 |
} |
| 111 |
|
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static void |
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rdpsnd_flush_record(void) |
| 114 |
{ |
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STREAM s; |
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unsigned int chunk_size; |
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char *data; |
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|
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if (record_buffer_size == 0) |
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return; |
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|
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assert(record_buffer_size <= sizeof(record_buffer)); |
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|
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data = record_buffer; |
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|
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/* |
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* Microsoft's RDP server keeps dropping chunks, so we need to |
| 128 |
* transmit everything inside one channel fragment or we risk |
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* making the rdpsnd server go out of sync with the byte stream. |
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*/ |
| 131 |
while (record_buffer_size) |
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{ |
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if (record_buffer_size < 1596) |
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chunk_size = record_buffer_size; |
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else |
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chunk_size = 1596; |
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|
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s = rdpsnd_init_packet(RDPSND_REC_DATA, chunk_size); |
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out_uint8p(s, data, chunk_size); |
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|
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s_mark_end(s); |
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rdpsnd_send(s); |
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|
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data = data + chunk_size; |
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record_buffer_size -= chunk_size; |
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|
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DEBUG_SOUND(("RDPSND: -> RDPSND_REC_DATA(length: %u)\n", (unsigned) chunk_size)); |
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} |
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|
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record_buffer_size = 0; |
| 151 |
} |
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|
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void |
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rdpsnd_record(const void *data, unsigned int size) |
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{ |
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uint32 remain; |
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|
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assert(rec_device_open); |
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|
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while (size) |
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{ |
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remain = sizeof(record_buffer) - record_buffer_size; |
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|
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if (size >= remain) |
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{ |
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memcpy(record_buffer + record_buffer_size, data, remain); |
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record_buffer_size += remain; |
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rdpsnd_flush_record(); |
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data = (const char *) data + remain; |
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size -= remain; |
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} |
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else |
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{ |
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memcpy(record_buffer + record_buffer_size, data, size); |
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record_buffer_size += size; |
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size = 0; |
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} |
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} |
| 179 |
} |
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|
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static RD_BOOL |
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rdpsnd_auto_select(void) |
| 183 |
{ |
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static RD_BOOL failed = False; |
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|
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if (!failed) |
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{ |
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current_driver = drivers; |
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while (current_driver != NULL) |
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{ |
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DEBUG(("trying %s...\n", current_driver->name)); |
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if (current_driver->wave_out_open()) |
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{ |
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DEBUG(("selected %s\n", current_driver->name)); |
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current_driver->wave_out_close(); |
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return True; |
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} |
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current_driver = current_driver->next; |
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} |
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|
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warning("no working audio-driver found\n"); |
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failed = True; |
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current_driver = NULL; |
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} |
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|
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return False; |
| 207 |
} |
| 208 |
|
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static void |
| 210 |
rdpsnd_process_negotiate(STREAM in) |
| 211 |
{ |
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uint16 in_format_count, i; |
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uint8 pad; |
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uint16 version; |
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RD_WAVEFORMATEX *format; |
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STREAM out; |
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RD_BOOL device_available = False; |
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int readcnt; |
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int discardcnt; |
| 220 |
|
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in_uint8s(in, 14); /* initial bytes not valid from server */ |
| 222 |
in_uint16_le(in, in_format_count); |
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in_uint8(in, pad); |
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in_uint16_le(in, version); |
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in_uint8s(in, 1); /* padding */ |
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|
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DEBUG_SOUND(("RDPSND: RDPSND_NEGOTIATE(formats: %d, pad: 0x%02x, version: %x)\n", |
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(int) in_format_count, (unsigned) pad, (unsigned) version)); |
| 229 |
|
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if (!current_driver) |
| 231 |
device_available = rdpsnd_auto_select(); |
| 232 |
|
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if (current_driver && !device_available && current_driver->wave_out_open()) |
| 234 |
{ |
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current_driver->wave_out_close(); |
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device_available = True; |
| 237 |
} |
| 238 |
|
| 239 |
format_count = 0; |
| 240 |
if (s_check_rem(in, 18 * in_format_count)) |
| 241 |
{ |
| 242 |
for (i = 0; i < in_format_count; i++) |
| 243 |
{ |
| 244 |
format = &formats[format_count]; |
| 245 |
in_uint16_le(in, format->wFormatTag); |
| 246 |
in_uint16_le(in, format->nChannels); |
| 247 |
in_uint32_le(in, format->nSamplesPerSec); |
| 248 |
in_uint32_le(in, format->nAvgBytesPerSec); |
| 249 |
in_uint16_le(in, format->nBlockAlign); |
| 250 |
in_uint16_le(in, format->wBitsPerSample); |
| 251 |
in_uint16_le(in, format->cbSize); |
| 252 |
|
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/* read in the buffer of unknown use */ |
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readcnt = format->cbSize; |
| 255 |
discardcnt = 0; |
| 256 |
if (format->cbSize > MAX_CBSIZE) |
| 257 |
{ |
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fprintf(stderr, "cbSize too large for buffer: %d\n", |
| 259 |
format->cbSize); |
| 260 |
readcnt = MAX_CBSIZE; |
| 261 |
discardcnt = format->cbSize - MAX_CBSIZE; |
| 262 |
} |
| 263 |
in_uint8a(in, format->cb, readcnt); |
| 264 |
in_uint8s(in, discardcnt); |
| 265 |
|
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if (current_driver && current_driver->wave_out_format_supported(format)) |
| 267 |
{ |
| 268 |
format_count++; |
| 269 |
if (format_count == MAX_FORMATS) |
| 270 |
break; |
| 271 |
} |
| 272 |
} |
| 273 |
} |
| 274 |
|
| 275 |
out = rdpsnd_init_packet(RDPSND_NEGOTIATE | 0x200, 20 + 18 * format_count); |
| 276 |
out_uint32_le(out, 0x00800003); /* flags */ |
| 277 |
out_uint32(out, 0xffffffff); /* volume */ |
| 278 |
out_uint32(out, 0); /* pitch */ |
| 279 |
out_uint16(out, 0); /* UDP port */ |
| 280 |
|
| 281 |
out_uint16_le(out, format_count); |
| 282 |
out_uint8(out, 0); /* padding */ |
| 283 |
out_uint16_le(out, 2); /* version */ |
| 284 |
out_uint8(out, 0); /* padding */ |
| 285 |
|
| 286 |
for (i = 0; i < format_count; i++) |
| 287 |
{ |
| 288 |
format = &formats[i]; |
| 289 |
out_uint16_le(out, format->wFormatTag); |
| 290 |
out_uint16_le(out, format->nChannels); |
| 291 |
out_uint32_le(out, format->nSamplesPerSec); |
| 292 |
out_uint32_le(out, format->nAvgBytesPerSec); |
| 293 |
out_uint16_le(out, format->nBlockAlign); |
| 294 |
out_uint16_le(out, format->wBitsPerSample); |
| 295 |
out_uint16(out, 0); /* cbSize */ |
| 296 |
} |
| 297 |
|
| 298 |
s_mark_end(out); |
| 299 |
|
| 300 |
DEBUG_SOUND(("RDPSND: -> RDPSND_NEGOTIATE(formats: %d)\n", (int) format_count)); |
| 301 |
|
| 302 |
rdpsnd_send(out); |
| 303 |
} |
| 304 |
|
| 305 |
static void |
| 306 |
rdpsnd_process_ping(STREAM in) |
| 307 |
{ |
| 308 |
uint16 tick; |
| 309 |
STREAM out; |
| 310 |
|
| 311 |
in_uint16_le(in, tick); |
| 312 |
|
| 313 |
DEBUG_SOUND(("RDPSND: RDPSND_PING(tick: 0x%04x)\n", (unsigned) tick)); |
| 314 |
|
| 315 |
out = rdpsnd_init_packet(RDPSND_PING | 0x2300, 4); |
| 316 |
out_uint16_le(out, tick); |
| 317 |
out_uint16_le(out, 0); |
| 318 |
s_mark_end(out); |
| 319 |
rdpsnd_send(out); |
| 320 |
|
| 321 |
DEBUG_SOUND(("RDPSND: -> (tick: 0x%04x)\n", (unsigned) tick)); |
| 322 |
} |
| 323 |
|
| 324 |
static void |
| 325 |
rdpsnd_process_rec_negotiate(STREAM in) |
| 326 |
{ |
| 327 |
uint16 in_format_count, i; |
| 328 |
uint16 version; |
| 329 |
RD_WAVEFORMATEX *format; |
| 330 |
STREAM out; |
| 331 |
RD_BOOL device_available = False; |
| 332 |
int readcnt; |
| 333 |
int discardcnt; |
| 334 |
|
| 335 |
in_uint8s(in, 8); /* initial bytes not valid from server */ |
| 336 |
in_uint16_le(in, in_format_count); |
| 337 |
in_uint16_le(in, version); |
| 338 |
|
| 339 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_NEGOTIATE(formats: %d, version: %x)\n", |
| 340 |
(int) in_format_count, (unsigned) version)); |
| 341 |
|
| 342 |
if (!current_driver) |
| 343 |
device_available = rdpsnd_auto_select(); |
| 344 |
|
| 345 |
if (current_driver && !device_available && current_driver->wave_in_open |
| 346 |
&& current_driver->wave_in_open()) |
| 347 |
{ |
| 348 |
current_driver->wave_in_close(); |
| 349 |
device_available = True; |
| 350 |
} |
| 351 |
|
| 352 |
rec_format_count = 0; |
| 353 |
if (s_check_rem(in, 18 * in_format_count)) |
| 354 |
{ |
| 355 |
for (i = 0; i < in_format_count; i++) |
| 356 |
{ |
| 357 |
format = &rec_formats[rec_format_count]; |
| 358 |
in_uint16_le(in, format->wFormatTag); |
| 359 |
in_uint16_le(in, format->nChannels); |
| 360 |
in_uint32_le(in, format->nSamplesPerSec); |
| 361 |
in_uint32_le(in, format->nAvgBytesPerSec); |
| 362 |
in_uint16_le(in, format->nBlockAlign); |
| 363 |
in_uint16_le(in, format->wBitsPerSample); |
| 364 |
in_uint16_le(in, format->cbSize); |
| 365 |
|
| 366 |
/* read in the buffer of unknown use */ |
| 367 |
readcnt = format->cbSize; |
| 368 |
discardcnt = 0; |
| 369 |
if (format->cbSize > MAX_CBSIZE) |
| 370 |
{ |
| 371 |
fprintf(stderr, "cbSize too large for buffer: %d\n", |
| 372 |
format->cbSize); |
| 373 |
readcnt = MAX_CBSIZE; |
| 374 |
discardcnt = format->cbSize - MAX_CBSIZE; |
| 375 |
} |
| 376 |
in_uint8a(in, format->cb, readcnt); |
| 377 |
in_uint8s(in, discardcnt); |
| 378 |
|
| 379 |
if (current_driver && current_driver->wave_in_format_supported |
| 380 |
&& current_driver->wave_in_format_supported(format)) |
| 381 |
{ |
| 382 |
rec_format_count++; |
| 383 |
if (rec_format_count == MAX_FORMATS) |
| 384 |
break; |
| 385 |
} |
| 386 |
} |
| 387 |
} |
| 388 |
|
| 389 |
out = rdpsnd_init_packet(RDPSND_REC_NEGOTIATE, 12 + 18 * rec_format_count); |
| 390 |
out_uint32_le(out, 0x00000000); /* flags */ |
| 391 |
out_uint32_le(out, 0xffffffff); /* volume */ |
| 392 |
out_uint16_le(out, rec_format_count); |
| 393 |
out_uint16_le(out, 1); /* version */ |
| 394 |
|
| 395 |
for (i = 0; i < rec_format_count; i++) |
| 396 |
{ |
| 397 |
format = &rec_formats[i]; |
| 398 |
out_uint16_le(out, format->wFormatTag); |
| 399 |
out_uint16_le(out, format->nChannels); |
| 400 |
out_uint32_le(out, format->nSamplesPerSec); |
| 401 |
out_uint32_le(out, format->nAvgBytesPerSec); |
| 402 |
out_uint16_le(out, format->nBlockAlign); |
| 403 |
out_uint16_le(out, format->wBitsPerSample); |
| 404 |
out_uint16(out, 0); /* cbSize */ |
| 405 |
} |
| 406 |
|
| 407 |
s_mark_end(out); |
| 408 |
|
| 409 |
DEBUG_SOUND(("RDPSND: -> RDPSND_REC_NEGOTIATE(formats: %d)\n", (int) rec_format_count)); |
| 410 |
|
| 411 |
rdpsnd_send(out); |
| 412 |
} |
| 413 |
|
| 414 |
static void |
| 415 |
rdpsnd_process_packet(uint8 opcode, STREAM s) |
| 416 |
{ |
| 417 |
uint16 vol_left, vol_right; |
| 418 |
static uint16 tick, format; |
| 419 |
static uint8 packet_index; |
| 420 |
|
| 421 |
switch (opcode) |
| 422 |
{ |
| 423 |
case RDPSND_WRITE: |
| 424 |
in_uint16_le(s, tick); |
| 425 |
in_uint16_le(s, format); |
| 426 |
in_uint8(s, packet_index); |
| 427 |
in_uint8s(s, 3); |
| 428 |
DEBUG_SOUND(("RDPSND: RDPSND_WRITE(tick: %u, format: %u, index: %u, data: %u bytes)\n", (unsigned) tick, (unsigned) format, (unsigned) packet_index, (unsigned) s->size - 8)); |
| 429 |
|
| 430 |
if (format >= MAX_FORMATS) |
| 431 |
{ |
| 432 |
error("RDPSND: Invalid format index\n"); |
| 433 |
break; |
| 434 |
} |
| 435 |
|
| 436 |
if (!device_open || (format != current_format)) |
| 437 |
{ |
| 438 |
/* |
| 439 |
* If we haven't selected a device by now, then either |
| 440 |
* we've failed to find a working device, or the server |
| 441 |
* is sending bogus RDPSND_WRITE. |
| 442 |
*/ |
| 443 |
if (!current_driver) |
| 444 |
{ |
| 445 |
rdpsnd_send_completion(tick, packet_index); |
| 446 |
break; |
| 447 |
} |
| 448 |
if (!device_open && !current_driver->wave_out_open()) |
| 449 |
{ |
| 450 |
rdpsnd_send_completion(tick, packet_index); |
| 451 |
break; |
| 452 |
} |
| 453 |
if (!current_driver->wave_out_set_format(&formats[format])) |
| 454 |
{ |
| 455 |
rdpsnd_send_completion(tick, packet_index); |
| 456 |
current_driver->wave_out_close(); |
| 457 |
device_open = False; |
| 458 |
break; |
| 459 |
} |
| 460 |
device_open = True; |
| 461 |
current_format = format; |
| 462 |
} |
| 463 |
|
| 464 |
rdpsnd_queue_write(rdpsnd_dsp_process |
| 465 |
(s->p, s->end - s->p, current_driver, |
| 466 |
&formats[current_format]), tick, packet_index); |
| 467 |
return; |
| 468 |
break; |
| 469 |
case RDPSND_CLOSE: |
| 470 |
DEBUG_SOUND(("RDPSND: RDPSND_CLOSE()\n")); |
| 471 |
if (device_open) |
| 472 |
current_driver->wave_out_close(); |
| 473 |
device_open = False; |
| 474 |
break; |
| 475 |
case RDPSND_NEGOTIATE: |
| 476 |
rdpsnd_process_negotiate(s); |
| 477 |
break; |
| 478 |
case RDPSND_PING: |
| 479 |
rdpsnd_process_ping(s); |
| 480 |
break; |
| 481 |
case RDPSND_SET_VOLUME: |
| 482 |
in_uint16_le(s, vol_left); |
| 483 |
in_uint16_le(s, vol_right); |
| 484 |
DEBUG_SOUND(("RDPSND: RDPSND_VOLUME(left: 0x%04x (%u %%), right: 0x%04x (%u %%))\n", (unsigned) vol_left, (unsigned) vol_left / 655, (unsigned) vol_right, (unsigned) vol_right / 655)); |
| 485 |
if (device_open) |
| 486 |
current_driver->wave_out_volume(vol_left, vol_right); |
| 487 |
break; |
| 488 |
case RDPSND_REC_NEGOTIATE: |
| 489 |
rdpsnd_process_rec_negotiate(s); |
| 490 |
break; |
| 491 |
case RDPSND_REC_START: |
| 492 |
in_uint16_le(s, format); |
| 493 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_START(format: %u)\n", (unsigned) format)); |
| 494 |
|
| 495 |
if (format >= MAX_FORMATS) |
| 496 |
{ |
| 497 |
error("RDPSND: Invalid format index\n"); |
| 498 |
break; |
| 499 |
} |
| 500 |
|
| 501 |
if (rec_device_open) |
| 502 |
{ |
| 503 |
error("RDPSND: Multiple RDPSND_REC_START\n"); |
| 504 |
break; |
| 505 |
} |
| 506 |
|
| 507 |
if (!current_driver->wave_in_open()) |
| 508 |
break; |
| 509 |
|
| 510 |
if (!current_driver->wave_in_set_format(&rec_formats[format])) |
| 511 |
{ |
| 512 |
error("RDPSND: Device not accepting format\n"); |
| 513 |
current_driver->wave_in_close(); |
| 514 |
break; |
| 515 |
} |
| 516 |
rec_device_open = True; |
| 517 |
break; |
| 518 |
case RDPSND_REC_STOP: |
| 519 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_STOP()\n")); |
| 520 |
rdpsnd_flush_record(); |
| 521 |
if (rec_device_open) |
| 522 |
current_driver->wave_in_close(); |
| 523 |
rec_device_open = False; |
| 524 |
break; |
| 525 |
case RDPSND_REC_SET_VOLUME: |
| 526 |
in_uint16_le(s, vol_left); |
| 527 |
in_uint16_le(s, vol_right); |
| 528 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_VOLUME(left: 0x%04x (%u %%), right: 0x%04x (%u %%))\n", (unsigned) vol_left, (unsigned) vol_left / 655, (unsigned) vol_right, (unsigned) vol_right / 655)); |
| 529 |
if (rec_device_open) |
| 530 |
current_driver->wave_in_volume(vol_left, vol_right); |
| 531 |
break; |
| 532 |
default: |
| 533 |
unimpl("RDPSND packet type %x\n", opcode); |
| 534 |
break; |
| 535 |
} |
| 536 |
} |
| 537 |
|
| 538 |
static void |
| 539 |
rdpsnd_process(STREAM s) |
| 540 |
{ |
| 541 |
uint16 len; |
| 542 |
|
| 543 |
while (!s_check_end(s)) |
| 544 |
{ |
| 545 |
/* New packet */ |
| 546 |
if (packet.size == 0) |
| 547 |
{ |
| 548 |
if ((s->end - s->p) < 4) |
| 549 |
{ |
| 550 |
error("RDPSND: Split at packet header. Things will go south from here...\n"); |
| 551 |
return; |
| 552 |
} |
| 553 |
in_uint8(s, packet_opcode); |
| 554 |
in_uint8s(s, 1); /* Padding */ |
| 555 |
in_uint16_le(s, len); |
| 556 |
|
| 557 |
DEBUG_SOUND(("RDPSND: == Opcode %x Length: %d ==\n", |
| 558 |
(int) packet_opcode, (int) len)); |
| 559 |
|
| 560 |
packet.p = packet.data; |
| 561 |
packet.end = packet.data + len; |
| 562 |
packet.size = len; |
| 563 |
} |
| 564 |
else |
| 565 |
{ |
| 566 |
len = MIN(s->end - s->p, packet.end - packet.p); |
| 567 |
|
| 568 |
/* Microsoft's server is so broken it's not even funny... */ |
| 569 |
if (packet_opcode == RDPSND_WRITE) |
| 570 |
{ |
| 571 |
if ((packet.p - packet.data) < 12) |
| 572 |
len = MIN(len, 12 - (packet.p - packet.data)); |
| 573 |
else if ((packet.p - packet.data) == 12) |
| 574 |
{ |
| 575 |
DEBUG_SOUND(("RDPSND: Eating 4 bytes of %d bytes...\n", |
| 576 |
len)); |
| 577 |
in_uint8s(s, 4); |
| 578 |
len -= 4; |
| 579 |
} |
| 580 |
} |
| 581 |
|
| 582 |
in_uint8a(s, packet.p, len); |
| 583 |
packet.p += len; |
| 584 |
} |
| 585 |
|
| 586 |
/* Packet fully assembled */ |
| 587 |
if (packet.p == packet.end) |
| 588 |
{ |
| 589 |
packet.p = packet.data; |
| 590 |
rdpsnd_process_packet(packet_opcode, &packet); |
| 591 |
packet.size = 0; |
| 592 |
} |
| 593 |
} |
| 594 |
} |
| 595 |
|
| 596 |
static RD_BOOL |
| 597 |
rdpsnddbg_line_handler(const char *line, void *data) |
| 598 |
{ |
| 599 |
#ifdef WITH_DEBUG_SOUND |
| 600 |
fprintf(stderr, "SNDDBG: %s\n", line); |
| 601 |
#endif |
| 602 |
return True; |
| 603 |
} |
| 604 |
|
| 605 |
static void |
| 606 |
rdpsnddbg_process(STREAM s) |
| 607 |
{ |
| 608 |
unsigned int pkglen; |
| 609 |
static char *rest = NULL; |
| 610 |
char *buf; |
| 611 |
|
| 612 |
pkglen = s->end - s->p; |
| 613 |
/* str_handle_lines requires null terminated strings */ |
| 614 |
buf = (char *) xmalloc(pkglen + 1); |
| 615 |
STRNCPY(buf, (char *) s->p, pkglen + 1); |
| 616 |
|
| 617 |
str_handle_lines(buf, &rest, rdpsnddbg_line_handler, NULL); |
| 618 |
|
| 619 |
xfree(buf); |
| 620 |
} |
| 621 |
|
| 622 |
static void |
| 623 |
rdpsnd_register_drivers(char *options) |
| 624 |
{ |
| 625 |
struct audio_driver **reg; |
| 626 |
|
| 627 |
/* The order of registrations define the probe-order |
| 628 |
when opening the device for the first time */ |
| 629 |
reg = &drivers; |
| 630 |
#if defined(RDPSND_ALSA) |
| 631 |
*reg = alsa_register(options); |
| 632 |
assert(*reg); |
| 633 |
reg = &((*reg)->next); |
| 634 |
#endif |
| 635 |
#if defined(RDPSND_SUN) |
| 636 |
*reg = sun_register(options); |
| 637 |
assert(*reg); |
| 638 |
reg = &((*reg)->next); |
| 639 |
#endif |
| 640 |
#if defined(RDPSND_OSS) |
| 641 |
*reg = oss_register(options); |
| 642 |
assert(*reg); |
| 643 |
reg = &((*reg)->next); |
| 644 |
#endif |
| 645 |
#if defined(RDPSND_SGI) |
| 646 |
*reg = sgi_register(options); |
| 647 |
assert(*reg); |
| 648 |
reg = &((*reg)->next); |
| 649 |
#endif |
| 650 |
#if defined(RDPSND_LIBAO) |
| 651 |
*reg = libao_register(options); |
| 652 |
assert(*reg); |
| 653 |
reg = &((*reg)->next); |
| 654 |
#endif |
| 655 |
*reg = NULL; |
| 656 |
} |
| 657 |
|
| 658 |
RD_BOOL |
| 659 |
rdpsnd_init(char *optarg) |
| 660 |
{ |
| 661 |
struct audio_driver *pos; |
| 662 |
char *driver = NULL, *options = NULL; |
| 663 |
|
| 664 |
drivers = NULL; |
| 665 |
|
| 666 |
packet.data = (uint8 *) xmalloc(65536); |
| 667 |
packet.p = packet.end = packet.data; |
| 668 |
packet.size = 0; |
| 669 |
|
| 670 |
rdpsnd_channel = |
| 671 |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
| 672 |
rdpsnd_process); |
| 673 |
|
| 674 |
rdpsnddbg_channel = |
| 675 |
channel_register("snddbg", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
| 676 |
rdpsnddbg_process); |
| 677 |
|
| 678 |
if ((rdpsnd_channel == NULL) || (rdpsnddbg_channel == NULL)) |
| 679 |
{ |
| 680 |
error("channel_register\n"); |
| 681 |
return False; |
| 682 |
} |
| 683 |
|
| 684 |
rdpsnd_queue_init(); |
| 685 |
|
| 686 |
if (optarg != NULL && strlen(optarg) > 0) |
| 687 |
{ |
| 688 |
driver = options = optarg; |
| 689 |
|
| 690 |
while (*options != '\0' && *options != ':') |
| 691 |
options++; |
| 692 |
|
| 693 |
if (*options == ':') |
| 694 |
{ |
| 695 |
*options = '\0'; |
| 696 |
options++; |
| 697 |
} |
| 698 |
|
| 699 |
if (*options == '\0') |
| 700 |
options = NULL; |
| 701 |
} |
| 702 |
|
| 703 |
rdpsnd_register_drivers(options); |
| 704 |
|
| 705 |
if (!driver) |
| 706 |
return True; |
| 707 |
|
| 708 |
pos = drivers; |
| 709 |
while (pos != NULL) |
| 710 |
{ |
| 711 |
if (!strcmp(pos->name, driver)) |
| 712 |
{ |
| 713 |
DEBUG(("selected %s\n", pos->name)); |
| 714 |
current_driver = pos; |
| 715 |
return True; |
| 716 |
} |
| 717 |
pos = pos->next; |
| 718 |
} |
| 719 |
return False; |
| 720 |
} |
| 721 |
|
| 722 |
void |
| 723 |
rdpsnd_show_help(void) |
| 724 |
{ |
| 725 |
struct audio_driver *pos; |
| 726 |
|
| 727 |
rdpsnd_register_drivers(NULL); |
| 728 |
|
| 729 |
pos = drivers; |
| 730 |
while (pos != NULL) |
| 731 |
{ |
| 732 |
fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
| 733 |
pos = pos->next; |
| 734 |
} |
| 735 |
} |
| 736 |
|
| 737 |
void |
| 738 |
rdpsnd_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
| 739 |
{ |
| 740 |
long next_pending; |
| 741 |
|
| 742 |
if (device_open || rec_device_open) |
| 743 |
current_driver->add_fds(n, rfds, wfds, tv); |
| 744 |
|
| 745 |
next_pending = rdpsnd_queue_next_completion(); |
| 746 |
if (next_pending >= 0) |
| 747 |
{ |
| 748 |
long cur_timeout; |
| 749 |
|
| 750 |
cur_timeout = tv->tv_sec * 1000000 + tv->tv_usec; |
| 751 |
if (cur_timeout > next_pending) |
| 752 |
{ |
| 753 |
tv->tv_sec = next_pending / 1000000; |
| 754 |
tv->tv_usec = next_pending % 1000000; |
| 755 |
} |
| 756 |
} |
| 757 |
} |
| 758 |
|
| 759 |
void |
| 760 |
rdpsnd_check_fds(fd_set * rfds, fd_set * wfds) |
| 761 |
{ |
| 762 |
rdpsnd_queue_complete_pending(); |
| 763 |
|
| 764 |
if (device_open || rec_device_open) |
| 765 |
current_driver->check_fds(rfds, wfds); |
| 766 |
} |
| 767 |
|
| 768 |
static void |
| 769 |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
| 770 |
{ |
| 771 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
| 772 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
| 773 |
|
| 774 |
if (next_hi == queue_pending) |
| 775 |
{ |
| 776 |
error("No space to queue audio packet\n"); |
| 777 |
return; |
| 778 |
} |
| 779 |
|
| 780 |
queue_hi = next_hi; |
| 781 |
|
| 782 |
packet->s = *s; |
| 783 |
packet->tick = tick; |
| 784 |
packet->index = index; |
| 785 |
|
| 786 |
gettimeofday(&packet->arrive_tv, NULL); |
| 787 |
} |
| 788 |
|
| 789 |
struct audio_packet * |
| 790 |
rdpsnd_queue_current_packet(void) |
| 791 |
{ |
| 792 |
return &packet_queue[queue_lo]; |
| 793 |
} |
| 794 |
|
| 795 |
RD_BOOL |
| 796 |
rdpsnd_queue_empty(void) |
| 797 |
{ |
| 798 |
return (queue_lo == queue_hi); |
| 799 |
} |
| 800 |
|
| 801 |
static void |
| 802 |
rdpsnd_queue_init(void) |
| 803 |
{ |
| 804 |
queue_pending = queue_lo = queue_hi = 0; |
| 805 |
} |
| 806 |
|
| 807 |
void |
| 808 |
rdpsnd_queue_next(unsigned long completed_in_us) |
| 809 |
{ |
| 810 |
struct audio_packet *packet; |
| 811 |
|
| 812 |
assert(!rdpsnd_queue_empty()); |
| 813 |
|
| 814 |
packet = &packet_queue[queue_lo]; |
| 815 |
|
| 816 |
gettimeofday(&packet->completion_tv, NULL); |
| 817 |
|
| 818 |
packet->completion_tv.tv_usec += completed_in_us; |
| 819 |
packet->completion_tv.tv_sec += packet->completion_tv.tv_usec / 1000000; |
| 820 |
packet->completion_tv.tv_usec %= 1000000; |
| 821 |
|
| 822 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
| 823 |
|
| 824 |
rdpsnd_queue_complete_pending(); |
| 825 |
} |
| 826 |
|
| 827 |
int |
| 828 |
rdpsnd_queue_next_tick(void) |
| 829 |
{ |
| 830 |
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
| 831 |
{ |
| 832 |
return packet_queue[(queue_lo + 1) % MAX_QUEUE].tick; |
| 833 |
} |
| 834 |
else |
| 835 |
{ |
| 836 |
return (packet_queue[queue_lo].tick + 65535) % 65536; |
| 837 |
} |
| 838 |
} |
| 839 |
|
| 840 |
static void |
| 841 |
rdpsnd_queue_complete_pending(void) |
| 842 |
{ |
| 843 |
struct timeval now; |
| 844 |
long elapsed; |
| 845 |
struct audio_packet *packet; |
| 846 |
|
| 847 |
gettimeofday(&now, NULL); |
| 848 |
|
| 849 |
while (queue_pending != queue_lo) |
| 850 |
{ |
| 851 |
packet = &packet_queue[queue_pending]; |
| 852 |
|
| 853 |
if (now.tv_sec < packet->completion_tv.tv_sec) |
| 854 |
break; |
| 855 |
|
| 856 |
if ((now.tv_sec == packet->completion_tv.tv_sec) && |
| 857 |
(now.tv_usec < packet->completion_tv.tv_usec)) |
| 858 |
break; |
| 859 |
|
| 860 |
elapsed = (packet->completion_tv.tv_sec - packet->arrive_tv.tv_sec) * 1000000 + |
| 861 |
(packet->completion_tv.tv_usec - packet->arrive_tv.tv_usec); |
| 862 |
elapsed /= 1000; |
| 863 |
|
| 864 |
xfree(packet->s.data); |
| 865 |
rdpsnd_send_completion((packet->tick + elapsed) % 65536, packet->index); |
| 866 |
queue_pending = (queue_pending + 1) % MAX_QUEUE; |
| 867 |
} |
| 868 |
} |
| 869 |
|
| 870 |
static long |
| 871 |
rdpsnd_queue_next_completion(void) |
| 872 |
{ |
| 873 |
struct audio_packet *packet; |
| 874 |
long remaining; |
| 875 |
struct timeval now; |
| 876 |
|
| 877 |
if (queue_pending == queue_lo) |
| 878 |
return -1; |
| 879 |
|
| 880 |
gettimeofday(&now, NULL); |
| 881 |
|
| 882 |
packet = &packet_queue[queue_pending]; |
| 883 |
|
| 884 |
remaining = (packet->completion_tv.tv_sec - now.tv_sec) * 1000000 + |
| 885 |
(packet->completion_tv.tv_usec - now.tv_usec); |
| 886 |
|
| 887 |
if (remaining < 0) |
| 888 |
return 0; |
| 889 |
|
| 890 |
return remaining; |
| 891 |
} |
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