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/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
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Sound Channel Process Functions |
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Copyright 2006-2007 Pierre Ossman <ossman@cendio.se> for Cendio AB |
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Copyright (C) Matthew Chapman 2003-2007 |
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Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
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|
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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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|
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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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|
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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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|
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#include <assert.h> |
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|
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#include "rdesktop.h" |
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#include "rdpsnd.h" |
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#include "rdpsnd_dsp.h" |
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|
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#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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#define RDPSND_PING 6 |
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#define RDPSND_NEGOTIATE 7 |
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|
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#define RDPSND_REC_NEGOTIATE 39 |
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#define RDPSND_REC_START 40 |
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#define RDPSND_REC_STOP 41 |
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#define RDPSND_REC_DATA 42 |
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#define RDPSND_REC_SET_VOLUME 43 |
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|
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#define RDPSND_FLAG_RECORD 0x00800000 |
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|
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#define MAX_FORMATS 10 |
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#define MAX_QUEUE 50 |
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|
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static VCHANNEL *rdpsnd_channel; |
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static VCHANNEL *rdpsnddbg_channel; |
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static struct audio_driver *drivers = NULL; |
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struct audio_driver *current_driver = NULL; |
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|
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static BOOL device_open; |
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static BOOL rec_device_open; |
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|
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static RD_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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|
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static RD_WAVEFORMATEX rec_formats[MAX_FORMATS]; |
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static unsigned int rec_format_count; |
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|
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unsigned int queue_hi, queue_lo, queue_pending; |
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struct audio_packet packet_queue[MAX_QUEUE]; |
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|
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static char record_buffer[8192]; |
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static int record_buffer_size; |
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|
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static uint8 packet_opcode; |
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static struct stream packet; |
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|
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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); |
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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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|
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static STREAM |
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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; |
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} |
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|
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static void |
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rdpsnd_send(STREAM s) |
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{ |
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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) |
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{ |
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STREAM s; |
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|
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s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
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out_uint16_le(s, tick); |
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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)); |
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} |
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|
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static void |
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rdpsnd_flush_record(void) |
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{ |
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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 |
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* 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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*/ |
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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; |
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} |
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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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int 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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} |
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} |
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|
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static BOOL |
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rdpsnd_auto_select(void) |
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{ |
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static 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; |
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} |
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|
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static void |
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rdpsnd_process_negotiate(STREAM in) |
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{ |
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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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BOOL device_available = False; |
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int readcnt; |
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int discardcnt; |
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|
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in_uint8s(in, 14); /* initial bytes not valid from server */ |
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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) |
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device_available = rdpsnd_auto_select(); |
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|
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if (current_driver && !device_available && current_driver->wave_out_open()) |
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{ |
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current_driver->wave_out_close(); |
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device_available = True; |
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} |
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|
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format_count = 0; |
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if (s_check_rem(in, 18 * in_format_count)) |
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{ |
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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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|
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/* read in the buffer of unknown use */ |
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readcnt = format->cbSize; |
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discardcnt = 0; |
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if (format->cbSize > MAX_CBSIZE) |
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{ |
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fprintf(stderr, "cbSize too large for buffer: %d\n", |
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format->cbSize); |
260 |
readcnt = MAX_CBSIZE; |
261 |
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); |
265 |
|
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if (device_available && current_driver->wave_out_format_supported(format)) |
267 |
{ |
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format_count++; |
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if (format_count == MAX_FORMATS) |
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break; |
271 |
} |
272 |
} |
273 |
} |
274 |
|
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out = rdpsnd_init_packet(RDPSND_NEGOTIATE | 0x200, 20 + 18 * format_count); |
276 |
out_uint32_le(out, 0x00800003); /* flags */ |
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out_uint32(out, 0xffffffff); /* volume */ |
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out_uint32(out, 0); /* pitch */ |
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out_uint16(out, 0); /* UDP port */ |
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|
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out_uint16_le(out, format_count); |
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out_uint8(out, 0); /* padding */ |
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out_uint16_le(out, 2); /* version */ |
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out_uint8(out, 0); /* padding */ |
285 |
|
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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); |
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out_uint32_le(out, format->nSamplesPerSec); |
292 |
out_uint32_le(out, format->nAvgBytesPerSec); |
293 |
out_uint16_le(out, format->nBlockAlign); |
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out_uint16_le(out, format->wBitsPerSample); |
295 |
out_uint16(out, 0); /* cbSize */ |
296 |
} |
297 |
|
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s_mark_end(out); |
299 |
|
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DEBUG_SOUND(("RDPSND: -> RDPSND_NEGOTIATE(formats: %d)\n", (int) format_count)); |
301 |
|
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rdpsnd_send(out); |
303 |
} |
304 |
|
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static void |
306 |
rdpsnd_process_ping(STREAM in) |
307 |
{ |
308 |
uint16 tick; |
309 |
STREAM out; |
310 |
|
311 |
in_uint16_le(in, tick); |
312 |
|
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DEBUG_SOUND(("RDPSND: RDPSND_PING(tick: 0x%04x)\n", (unsigned) tick)); |
314 |
|
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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 |
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 (device_available && current_driver->wave_in_format_supported(format)) |
380 |
{ |
381 |
rec_format_count++; |
382 |
if (rec_format_count == MAX_FORMATS) |
383 |
break; |
384 |
} |
385 |
} |
386 |
} |
387 |
|
388 |
out = rdpsnd_init_packet(RDPSND_REC_NEGOTIATE, 12 + 18 * rec_format_count); |
389 |
out_uint32_le(out, 0x00000000); /* flags */ |
390 |
out_uint32_le(out, 0xffffffff); /* volume */ |
391 |
out_uint16_le(out, rec_format_count); |
392 |
out_uint16_le(out, 1); /* version */ |
393 |
|
394 |
for (i = 0; i < rec_format_count; i++) |
395 |
{ |
396 |
format = &rec_formats[i]; |
397 |
out_uint16_le(out, format->wFormatTag); |
398 |
out_uint16_le(out, format->nChannels); |
399 |
out_uint32_le(out, format->nSamplesPerSec); |
400 |
out_uint32_le(out, format->nAvgBytesPerSec); |
401 |
out_uint16_le(out, format->nBlockAlign); |
402 |
out_uint16_le(out, format->wBitsPerSample); |
403 |
out_uint16(out, 0); /* cbSize */ |
404 |
} |
405 |
|
406 |
s_mark_end(out); |
407 |
|
408 |
DEBUG_SOUND(("RDPSND: -> RDPSND_REC_NEGOTIATE(formats: %d)\n", (int) rec_format_count)); |
409 |
|
410 |
rdpsnd_send(out); |
411 |
} |
412 |
|
413 |
static void |
414 |
rdpsnd_process_packet(uint8 opcode, STREAM s) |
415 |
{ |
416 |
uint16 vol_left, vol_right; |
417 |
static uint16 tick, format; |
418 |
static uint8 packet_index; |
419 |
|
420 |
switch (opcode) |
421 |
{ |
422 |
case RDPSND_WRITE: |
423 |
in_uint16_le(s, tick); |
424 |
in_uint16_le(s, format); |
425 |
in_uint8(s, packet_index); |
426 |
in_uint8s(s, 3); |
427 |
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)); |
428 |
|
429 |
if (format >= MAX_FORMATS) |
430 |
{ |
431 |
error("RDPSND: Invalid format index\n"); |
432 |
break; |
433 |
} |
434 |
|
435 |
if (!device_open || (format != current_format)) |
436 |
{ |
437 |
/* |
438 |
* If we haven't selected a device by now, then either |
439 |
* we've failed to find a working device, or the server |
440 |
* is sending bogus RDPSND_WRITE. |
441 |
*/ |
442 |
if (!current_driver) |
443 |
{ |
444 |
rdpsnd_send_completion(tick, packet_index); |
445 |
break; |
446 |
} |
447 |
if (!device_open && !current_driver->wave_out_open()) |
448 |
{ |
449 |
rdpsnd_send_completion(tick, packet_index); |
450 |
break; |
451 |
} |
452 |
if (!current_driver->wave_out_set_format(&formats[format])) |
453 |
{ |
454 |
rdpsnd_send_completion(tick, packet_index); |
455 |
current_driver->wave_out_close(); |
456 |
device_open = False; |
457 |
break; |
458 |
} |
459 |
device_open = True; |
460 |
current_format = format; |
461 |
} |
462 |
|
463 |
rdpsnd_queue_write(rdpsnd_dsp_process |
464 |
(s->p, s->end - s->p, current_driver, |
465 |
&formats[current_format]), tick, packet_index); |
466 |
return; |
467 |
break; |
468 |
case RDPSND_CLOSE: |
469 |
DEBUG_SOUND(("RDPSND: RDPSND_CLOSE()\n")); |
470 |
if (device_open) |
471 |
current_driver->wave_out_close(); |
472 |
device_open = False; |
473 |
break; |
474 |
case RDPSND_NEGOTIATE: |
475 |
rdpsnd_process_negotiate(s); |
476 |
break; |
477 |
case RDPSND_PING: |
478 |
rdpsnd_process_ping(s); |
479 |
break; |
480 |
case RDPSND_SET_VOLUME: |
481 |
in_uint16_le(s, vol_left); |
482 |
in_uint16_le(s, vol_right); |
483 |
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)); |
484 |
if (device_open) |
485 |
current_driver->wave_out_volume(vol_left, vol_right); |
486 |
break; |
487 |
case RDPSND_REC_NEGOTIATE: |
488 |
rdpsnd_process_rec_negotiate(s); |
489 |
break; |
490 |
case RDPSND_REC_START: |
491 |
in_uint16_le(s, format); |
492 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_START(format: %u)\n", (unsigned) format)); |
493 |
|
494 |
if (format >= MAX_FORMATS) |
495 |
{ |
496 |
error("RDPSND: Invalid format index\n"); |
497 |
break; |
498 |
} |
499 |
|
500 |
if (rec_device_open) |
501 |
{ |
502 |
error("RDPSND: Multiple RDPSND_REC_START\n"); |
503 |
break; |
504 |
} |
505 |
|
506 |
if (!current_driver->wave_in_open()) |
507 |
break; |
508 |
|
509 |
if (!current_driver->wave_in_set_format(&rec_formats[format])) |
510 |
{ |
511 |
error("RDPSND: Device not accepting format\n"); |
512 |
current_driver->wave_in_close(); |
513 |
break; |
514 |
} |
515 |
rec_device_open = True; |
516 |
break; |
517 |
case RDPSND_REC_STOP: |
518 |
DEBUG_SOUND(("RDPSND: RDPSND_REC_STOP()\n")); |
519 |
rdpsnd_flush_record(); |
520 |
if (rec_device_open) |
521 |
current_driver->wave_in_close(); |
522 |
rec_device_open = False; |
523 |
break; |
524 |
case RDPSND_REC_SET_VOLUME: |
525 |
in_uint16_le(s, vol_left); |
526 |
in_uint16_le(s, vol_right); |
527 |
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)); |
528 |
if (rec_device_open) |
529 |
current_driver->wave_in_volume(vol_left, vol_right); |
530 |
break; |
531 |
default: |
532 |
unimpl("RDPSND packet type %x\n", opcode); |
533 |
break; |
534 |
} |
535 |
} |
536 |
|
537 |
static void |
538 |
rdpsnd_process(STREAM s) |
539 |
{ |
540 |
uint16 len; |
541 |
|
542 |
while (!s_check_end(s)) |
543 |
{ |
544 |
/* New packet */ |
545 |
if (packet.size == 0) |
546 |
{ |
547 |
if ((s->end - s->p) < 4) |
548 |
{ |
549 |
error("RDPSND: Split at packet header. Things will go south from here...\n"); |
550 |
return; |
551 |
} |
552 |
in_uint8(s, packet_opcode); |
553 |
in_uint8s(s, 1); /* Padding */ |
554 |
in_uint16_le(s, len); |
555 |
|
556 |
DEBUG_SOUND(("RDPSND: == Opcode %x Length: %d ==\n", |
557 |
(int) packet_opcode, (int) len)); |
558 |
|
559 |
packet.p = packet.data; |
560 |
packet.end = packet.data + len; |
561 |
packet.size = len; |
562 |
} |
563 |
else |
564 |
{ |
565 |
len = MIN(s->end - s->p, packet.end - packet.p); |
566 |
|
567 |
/* Microsoft's server is so broken it's not even funny... */ |
568 |
if (packet_opcode == RDPSND_WRITE) |
569 |
{ |
570 |
if ((packet.p - packet.data) < 12) |
571 |
len = MIN(len, 12 - (packet.p - packet.data)); |
572 |
else if ((packet.p - packet.data) == 12) |
573 |
{ |
574 |
DEBUG_SOUND(("RDPSND: Eating 4 bytes of %d bytes...\n", |
575 |
len)); |
576 |
in_uint8s(s, 4); |
577 |
len -= 4; |
578 |
} |
579 |
} |
580 |
|
581 |
in_uint8a(s, packet.p, len); |
582 |
packet.p += len; |
583 |
} |
584 |
|
585 |
/* Packet fully assembled */ |
586 |
if (packet.p == packet.end) |
587 |
{ |
588 |
packet.p = packet.data; |
589 |
rdpsnd_process_packet(packet_opcode, &packet); |
590 |
packet.size = 0; |
591 |
} |
592 |
} |
593 |
} |
594 |
|
595 |
static BOOL |
596 |
rdpsnddbg_line_handler(const char *line, void *data) |
597 |
{ |
598 |
#ifdef WITH_DEBUG_SOUND |
599 |
fprintf(stderr, "SNDDBG: %s\n", line); |
600 |
#endif |
601 |
return True; |
602 |
} |
603 |
|
604 |
static void |
605 |
rdpsnddbg_process(STREAM s) |
606 |
{ |
607 |
unsigned int pkglen; |
608 |
static char *rest = NULL; |
609 |
char *buf; |
610 |
|
611 |
pkglen = s->end - s->p; |
612 |
/* str_handle_lines requires null terminated strings */ |
613 |
buf = xmalloc(pkglen + 1); |
614 |
STRNCPY(buf, (char *) s->p, pkglen + 1); |
615 |
|
616 |
str_handle_lines(buf, &rest, rdpsnddbg_line_handler, NULL); |
617 |
|
618 |
xfree(buf); |
619 |
} |
620 |
|
621 |
static void |
622 |
rdpsnd_register_drivers(char *options) |
623 |
{ |
624 |
struct audio_driver **reg; |
625 |
|
626 |
/* The order of registrations define the probe-order |
627 |
when opening the device for the first time */ |
628 |
reg = &drivers; |
629 |
#if defined(RDPSND_ALSA) |
630 |
*reg = alsa_register(options); |
631 |
assert(*reg); |
632 |
reg = &((*reg)->next); |
633 |
#endif |
634 |
#if defined(RDPSND_SUN) |
635 |
*reg = sun_register(options); |
636 |
assert(*reg); |
637 |
reg = &((*reg)->next); |
638 |
#endif |
639 |
#if defined(RDPSND_OSS) |
640 |
*reg = oss_register(options); |
641 |
assert(*reg); |
642 |
reg = &((*reg)->next); |
643 |
#endif |
644 |
#if defined(RDPSND_SGI) |
645 |
*reg = sgi_register(options); |
646 |
assert(*reg); |
647 |
reg = &((*reg)->next); |
648 |
#endif |
649 |
#if defined(RDPSND_LIBAO) |
650 |
*reg = libao_register(options); |
651 |
assert(*reg); |
652 |
reg = &((*reg)->next); |
653 |
#endif |
654 |
*reg = NULL; |
655 |
} |
656 |
|
657 |
BOOL |
658 |
rdpsnd_init(char *optarg) |
659 |
{ |
660 |
struct audio_driver *pos; |
661 |
char *driver = NULL, *options = NULL; |
662 |
|
663 |
drivers = NULL; |
664 |
|
665 |
packet.data = xmalloc(65536); |
666 |
packet.p = packet.end = packet.data; |
667 |
packet.size = 0; |
668 |
|
669 |
rdpsnd_channel = |
670 |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
671 |
rdpsnd_process); |
672 |
|
673 |
rdpsnddbg_channel = |
674 |
channel_register("snddbg", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
675 |
rdpsnddbg_process); |
676 |
|
677 |
if ((rdpsnd_channel == NULL) || (rdpsnddbg_channel == NULL)) |
678 |
{ |
679 |
error("channel_register\n"); |
680 |
return False; |
681 |
} |
682 |
|
683 |
rdpsnd_queue_init(); |
684 |
|
685 |
if (optarg != NULL && strlen(optarg) > 0) |
686 |
{ |
687 |
driver = options = optarg; |
688 |
|
689 |
while (*options != '\0' && *options != ':') |
690 |
options++; |
691 |
|
692 |
if (*options == ':') |
693 |
{ |
694 |
*options = '\0'; |
695 |
options++; |
696 |
} |
697 |
|
698 |
if (*options == '\0') |
699 |
options = NULL; |
700 |
} |
701 |
|
702 |
rdpsnd_register_drivers(options); |
703 |
|
704 |
if (!driver) |
705 |
return True; |
706 |
|
707 |
pos = drivers; |
708 |
while (pos != NULL) |
709 |
{ |
710 |
if (!strcmp(pos->name, driver)) |
711 |
{ |
712 |
DEBUG(("selected %s\n", pos->name)); |
713 |
current_driver = pos; |
714 |
return True; |
715 |
} |
716 |
pos = pos->next; |
717 |
} |
718 |
return False; |
719 |
} |
720 |
|
721 |
void |
722 |
rdpsnd_show_help(void) |
723 |
{ |
724 |
struct audio_driver *pos; |
725 |
|
726 |
rdpsnd_register_drivers(NULL); |
727 |
|
728 |
pos = drivers; |
729 |
while (pos != NULL) |
730 |
{ |
731 |
fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
732 |
pos = pos->next; |
733 |
} |
734 |
} |
735 |
|
736 |
void |
737 |
rdpsnd_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
738 |
{ |
739 |
long next_pending; |
740 |
|
741 |
if (device_open || rec_device_open) |
742 |
current_driver->add_fds(n, rfds, wfds, tv); |
743 |
|
744 |
next_pending = rdpsnd_queue_next_completion(); |
745 |
if (next_pending >= 0) |
746 |
{ |
747 |
long cur_timeout; |
748 |
|
749 |
cur_timeout = tv->tv_sec * 1000000 + tv->tv_usec; |
750 |
if (cur_timeout > next_pending) |
751 |
{ |
752 |
tv->tv_sec = next_pending / 1000000; |
753 |
tv->tv_usec = next_pending % 1000000; |
754 |
} |
755 |
} |
756 |
} |
757 |
|
758 |
void |
759 |
rdpsnd_check_fds(fd_set * rfds, fd_set * wfds) |
760 |
{ |
761 |
rdpsnd_queue_complete_pending(); |
762 |
|
763 |
if (device_open || rec_device_open) |
764 |
current_driver->check_fds(rfds, wfds); |
765 |
} |
766 |
|
767 |
static void |
768 |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
769 |
{ |
770 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
771 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
772 |
|
773 |
if (next_hi == queue_pending) |
774 |
{ |
775 |
error("No space to queue audio packet\n"); |
776 |
return; |
777 |
} |
778 |
|
779 |
queue_hi = next_hi; |
780 |
|
781 |
packet->s = *s; |
782 |
packet->tick = tick; |
783 |
packet->index = index; |
784 |
|
785 |
gettimeofday(&packet->arrive_tv, NULL); |
786 |
} |
787 |
|
788 |
struct audio_packet * |
789 |
rdpsnd_queue_current_packet(void) |
790 |
{ |
791 |
return &packet_queue[queue_lo]; |
792 |
} |
793 |
|
794 |
BOOL |
795 |
rdpsnd_queue_empty(void) |
796 |
{ |
797 |
return (queue_lo == queue_hi); |
798 |
} |
799 |
|
800 |
static void |
801 |
rdpsnd_queue_init(void) |
802 |
{ |
803 |
queue_pending = queue_lo = queue_hi = 0; |
804 |
} |
805 |
|
806 |
void |
807 |
rdpsnd_queue_next(unsigned long completed_in_us) |
808 |
{ |
809 |
struct audio_packet *packet; |
810 |
|
811 |
assert(!rdpsnd_queue_empty()); |
812 |
|
813 |
packet = &packet_queue[queue_lo]; |
814 |
|
815 |
gettimeofday(&packet->completion_tv, NULL); |
816 |
|
817 |
packet->completion_tv.tv_usec += completed_in_us; |
818 |
packet->completion_tv.tv_sec += packet->completion_tv.tv_usec / 1000000; |
819 |
packet->completion_tv.tv_usec %= 1000000; |
820 |
|
821 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
822 |
|
823 |
rdpsnd_queue_complete_pending(); |
824 |
} |
825 |
|
826 |
int |
827 |
rdpsnd_queue_next_tick(void) |
828 |
{ |
829 |
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
830 |
{ |
831 |
return packet_queue[(queue_lo + 1) % MAX_QUEUE].tick; |
832 |
} |
833 |
else |
834 |
{ |
835 |
return (packet_queue[queue_lo].tick + 65535) % 65536; |
836 |
} |
837 |
} |
838 |
|
839 |
static void |
840 |
rdpsnd_queue_complete_pending(void) |
841 |
{ |
842 |
struct timeval now; |
843 |
long elapsed; |
844 |
struct audio_packet *packet; |
845 |
|
846 |
gettimeofday(&now, NULL); |
847 |
|
848 |
while (queue_pending != queue_lo) |
849 |
{ |
850 |
packet = &packet_queue[queue_pending]; |
851 |
|
852 |
if (now.tv_sec < packet->completion_tv.tv_sec) |
853 |
break; |
854 |
|
855 |
if ((now.tv_sec == packet->completion_tv.tv_sec) && |
856 |
(now.tv_usec < packet->completion_tv.tv_usec)) |
857 |
break; |
858 |
|
859 |
elapsed = (packet->completion_tv.tv_sec - packet->arrive_tv.tv_sec) * 1000000 + |
860 |
(packet->completion_tv.tv_usec - packet->arrive_tv.tv_usec); |
861 |
elapsed /= 1000; |
862 |
|
863 |
xfree(packet->s.data); |
864 |
rdpsnd_send_completion((packet->tick + elapsed) % 65536, packet->index); |
865 |
queue_pending = (queue_pending + 1) % MAX_QUEUE; |
866 |
} |
867 |
} |
868 |
|
869 |
static long |
870 |
rdpsnd_queue_next_completion(void) |
871 |
{ |
872 |
struct audio_packet *packet; |
873 |
long remaining; |
874 |
struct timeval now; |
875 |
|
876 |
if (queue_pending == queue_lo) |
877 |
return -1; |
878 |
|
879 |
gettimeofday(&now, NULL); |
880 |
|
881 |
packet = &packet_queue[queue_pending]; |
882 |
|
883 |
remaining = (packet->completion_tv.tv_sec - now.tv_sec) * 1000000 + |
884 |
(packet->completion_tv.tv_usec - now.tv_usec); |
885 |
|
886 |
if (remaining < 0) |
887 |
return 0; |
888 |
|
889 |
return remaining; |
890 |
} |