e7fe39a65b
- In case clipboard is not initialized, clipboard_data_in returns (fixes a segfault) - If less than 4 bytes are sent to sound_send_wave_data_chunk, it returns (fixes a segfault) - When sending sound initiliazation messages set g_chan in chansrv to 0, so the server waits for client to reply (this makes sound work afte reconnecting) - In process_message_channel_setup, clear any leftover data in chan_items
796 lines
21 KiB
C
796 lines
21 KiB
C
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2009-2013
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "sound.h"
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#include "thread_calls.h"
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#include "defines.h"
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extern int g_rdpsnd_chan_id; /* in chansrv.c */
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extern int g_display_num; /* in chansrv.c */
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static struct trans *g_audio_l_trans = 0; /* listener */
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static struct trans *g_audio_c_trans = 0; /* connection */
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static int g_training_sent_time = 0;
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static int g_cBlockNo = 0;
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#define BBUF_SIZE (1024 * 8)
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char g_buffer[BBUF_SIZE];
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int g_buf_index = 0;
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int g_sent_time[256];
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#if defined(XRDP_SIMPLESOUND)
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static void *DEFAULT_CC
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read_raw_audio_data(void *arg);
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#endif
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#define CHANSRV_PORT_STR "/tmp/.xrdp/xrdp_chansrv_audio_socket_%d"
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struct xr_wave_format_ex
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{
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int wFormatTag;
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int nChannels;
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int nSamplesPerSec;
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int nAvgBytesPerSec;
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int nBlockAlign;
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int wBitsPerSample;
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int cbSize;
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char *data;
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};
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static char g_pmc_22050_data[] = { 0 };
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static struct xr_wave_format_ex g_pmc_22050 =
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{
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1, /* wFormatTag - WAVE_FORMAT_PCM */
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2, /* num of channels */
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22050, /* samples per sec */
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88200, /* avg bytes per sec */
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4, /* block align */
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16, /* bits per sample */
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0, /* data size */
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g_pmc_22050_data /* data */
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};
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static char g_pmc_44100_data[] = { 0 };
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static struct xr_wave_format_ex g_pmc_44100 =
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{
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1, /* wFormatTag - WAVE_FORMAT_PCM */
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2, /* num of channels */
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44100, /* samples per sec */
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176400, /* avg bytes per sec */
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4, /* block align */
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16, /* bits per sample */
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0, /* data size */
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g_pmc_44100_data /* data */
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};
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#define NUM_BUILT_IN 2
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static struct xr_wave_format_ex *g_wave_formats[NUM_BUILT_IN] =
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{
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&g_pmc_44100,
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&g_pmc_22050
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};
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/* index into list from client */
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static int g_current_client_format_index = 0;
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/* index into list from server */
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static int g_current_server_format_index = 0;
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/*****************************************************************************/
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static int APP_CC
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sound_send_server_formats(void)
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{
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struct stream *s;
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int bytes;
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int index;
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char *size_ptr;
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make_stream(s);
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init_stream(s, 8182);
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out_uint16_le(s, SNDC_FORMATS);
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size_ptr = s->p;
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out_uint16_le(s, 0); /* size, set later */
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out_uint32_le(s, 0); /* dwFlags */
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out_uint32_le(s, 0); /* dwVolume */
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out_uint32_le(s, 0); /* dwPitch */
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out_uint16_le(s, 0); /* wDGramPort */
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out_uint16_le(s, NUM_BUILT_IN); /* wNumberOfFormats */
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out_uint8(s, g_cBlockNo); /* cLastBlockConfirmed */
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out_uint16_le(s, 2); /* wVersion */
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out_uint8(s, 0); /* bPad */
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/* sndFormats */
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/*
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wFormatTag 2 byte offset 0
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nChannels 2 byte offset 2
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nSamplesPerSec 4 byte offset 4
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nAvgBytesPerSec 4 byte offset 8
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nBlockAlign 2 byte offset 12
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wBitsPerSample 2 byte offset 14
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cbSize 2 byte offset 16
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data variable offset 18
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*/
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/* examples
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01 00 02 00 44 ac 00 00 10 b1 02 00 04 00 10 00 ....D...........
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00 00
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01 00 02 00 22 56 00 00 88 58 01 00 04 00 10 00 ...."V...X......
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00 00
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*/
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for (index = 0; index < NUM_BUILT_IN; index++)
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{
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out_uint16_le(s, g_wave_formats[index]->wFormatTag);
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out_uint16_le(s, g_wave_formats[index]->nChannels);
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out_uint32_le(s, g_wave_formats[index]->nSamplesPerSec);
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out_uint32_le(s, g_wave_formats[index]->nAvgBytesPerSec);
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out_uint16_le(s, g_wave_formats[index]->nBlockAlign);
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out_uint16_le(s, g_wave_formats[index]->wBitsPerSample);
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bytes = g_wave_formats[index]->cbSize;
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out_uint16_le(s, bytes);
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if (bytes > 0)
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{
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out_uint8p(s, g_wave_formats[index]->data, bytes);
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}
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}
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s_mark_end(s);
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bytes = (int)((s->end - s->data) - 4);
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size_ptr[0] = bytes;
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size_ptr[1] = bytes >> 8;
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bytes = (int)(s->end - s->data);
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send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
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free_stream(s);
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return 0;
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}
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/*****************************************************************************/
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static int
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sound_send_training(void)
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{
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struct stream *s;
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int bytes;
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int time;
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char *size_ptr;
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make_stream(s);
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init_stream(s, 8182);
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out_uint16_le(s, SNDC_TRAINING);
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size_ptr = s->p;
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out_uint16_le(s, 0); /* size, set later */
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time = g_time2();
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g_training_sent_time = time;
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out_uint16_le(s, time);
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out_uint16_le(s, 1024);
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out_uint8s(s, (1024 - 4));
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s_mark_end(s);
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bytes = (int)((s->end - s->data) - 4);
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size_ptr[0] = bytes;
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size_ptr[1] = bytes >> 8;
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bytes = (int)(s->end - s->data);
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send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
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free_stream(s);
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return 0;
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}
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/*****************************************************************************/
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static int APP_CC
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sound_process_format(int aindex, int wFormatTag, int nChannels,
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int nSamplesPerSec, int nAvgBytesPerSec,
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int nBlockAlign, int wBitsPerSample,
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int cbSize, char *data)
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{
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int lindex;
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LOG(0, ("sound_process_format:"));
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LOG(0, (" wFormatTag %d", wFormatTag));
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LOG(0, (" nChannels %d", nChannels));
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LOG(0, (" nSamplesPerSec %d", nSamplesPerSec));
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LOG(0, (" nAvgBytesPerSec %d", nAvgBytesPerSec));
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LOG(0, (" nBlockAlign %d", nBlockAlign));
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LOG(0, (" wBitsPerSample %d", wBitsPerSample));
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LOG(0, (" cbSize %d", cbSize));
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g_hexdump(data, cbSize);
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if (wFormatTag == g_pmc_44100.wFormatTag &&
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nChannels == g_pmc_44100.nChannels &&
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nSamplesPerSec == g_pmc_44100.nSamplesPerSec &&
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nAvgBytesPerSec == g_pmc_44100.nAvgBytesPerSec &&
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nBlockAlign == g_pmc_44100.nBlockAlign &&
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wBitsPerSample == g_pmc_44100.wBitsPerSample)
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{
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g_current_client_format_index = aindex;
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g_current_server_format_index = 0;
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}
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#if 0
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for (lindex = 0; lindex < NUM_BUILT_IN; lindex++)
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{
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if (wFormatTag == g_wave_formats[lindex]->wFormatTag &&
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nChannels == g_wave_formats[lindex]->nChannels &&
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nSamplesPerSec == g_wave_formats[lindex]->nSamplesPerSec &&
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nAvgBytesPerSec == g_wave_formats[lindex]->nAvgBytesPerSec &&
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nBlockAlign == g_wave_formats[lindex]->nBlockAlign &&
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wBitsPerSample == g_wave_formats[lindex]->wBitsPerSample)
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{
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g_current_client_format_index = aindex;
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g_current_server_format_index = lindex;
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}
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}
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#endif
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return 0;
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}
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/*****************************************************************************/
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/*
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0000 07 02 26 00 03 00 80 00 ff ff ff ff 00 00 00 00 ..&.............
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0010 00 00 01 00 00 02 00 00 01 00 02 00 44 ac 00 00 ............D...
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0020 10 b1 02 00 04 00 10 00 00 00
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*/
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static int APP_CC
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sound_process_formats(struct stream *s, int size)
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{
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int num_formats;
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int index;
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int wFormatTag;
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int nChannels;
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int nSamplesPerSec;
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int nAvgBytesPerSec;
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int nBlockAlign;
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int wBitsPerSample;
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int cbSize;
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char *data;
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LOG(0, ("sound_process_formats:"));
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if (size < 16)
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{
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return 1;
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}
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in_uint8s(s, 14);
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in_uint16_le(s, num_formats);
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in_uint8s(s, 4);
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if (num_formats > 0)
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{
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for (index = 0; index < num_formats; index++)
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{
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in_uint16_le(s, wFormatTag);
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in_uint16_le(s, nChannels);
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in_uint32_le(s, nSamplesPerSec);
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in_uint32_le(s, nAvgBytesPerSec);
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in_uint16_le(s, nBlockAlign);
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in_uint16_le(s, wBitsPerSample);
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in_uint16_le(s, cbSize);
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in_uint8p(s, data, cbSize);
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sound_process_format(index, wFormatTag, nChannels, nSamplesPerSec,
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nAvgBytesPerSec, nBlockAlign, wBitsPerSample,
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cbSize, data);
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}
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sound_send_training();
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}
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return 0;
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}
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/*****************************************************************************/
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/* send wave message to client */
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static int
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sound_send_wave_data_chunk(char *data, int data_bytes)
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{
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struct stream *s;
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int bytes;
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int time;
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char *size_ptr;
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LOG(10, ("sound_send_wave_data_chunk: data_bytes %d", data_bytes));
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if ((data_bytes < 4) || (data_bytes > 128 * 1024))
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{
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LOG(0, ("sound_send_wave_data_chunk: bad data_bytes %d", data_bytes));
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return 0;
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}
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/* part one of 2 PDU wave info */
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LOG(10, ("sound_send_wave_data_chunk: sending %d bytes", data_bytes));
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make_stream(s);
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init_stream(s, 16 + data_bytes); /* some extra space */
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out_uint16_le(s, SNDC_WAVE);
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size_ptr = s->p;
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out_uint16_le(s, 0); /* size, set later */
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time = g_time2();
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out_uint16_le(s, time);
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out_uint16_le(s, g_current_client_format_index); /* wFormatNo */
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g_cBlockNo++;
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out_uint8(s, g_cBlockNo);
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g_sent_time[g_cBlockNo & 0xff] = time;
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LOG(10, ("sound_send_wave_data_chunk: sending time %d, g_cBlockNo %d",
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time & 0xffff, g_cBlockNo & 0xff));
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out_uint8s(s, 3);
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out_uint8a(s, data, 4);
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s_mark_end(s);
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bytes = (int)((s->end - s->data) - 4);
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bytes += data_bytes;
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bytes -= 4;
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size_ptr[0] = bytes;
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size_ptr[1] = bytes >> 8;
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bytes = (int)(s->end - s->data);
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send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
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/* part two of 2 PDU wave info
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even is zero, we have to send this */
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init_stream(s, data_bytes);
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out_uint32_le(s, 0);
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out_uint8a(s, data + 4, data_bytes - 4);
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s_mark_end(s);
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bytes = (int)(s->end - s->data);
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send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
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free_stream(s);
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return 0;
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}
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/*****************************************************************************/
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/* send wave message to client, buffer first */
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static int
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sound_send_wave_data(char *data, int data_bytes)
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{
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int space_left;
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int chunk_bytes;
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int data_index;
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LOG(10, ("sound_send_wave_data: sending %d bytes", data_bytes));
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data_index = 0;
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while (data_bytes > 0)
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{
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space_left = BBUF_SIZE - g_buf_index;
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chunk_bytes = MIN(space_left, data_bytes);
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if (chunk_bytes < 1)
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{
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LOG(10, ("sound_send_wave_data: error"));
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break;
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}
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g_memcpy(g_buffer + g_buf_index, data + data_index, chunk_bytes);
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g_buf_index += chunk_bytes;
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if (g_buf_index >= BBUF_SIZE)
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{
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sound_send_wave_data_chunk(g_buffer, BBUF_SIZE);
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g_buf_index = 0;
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}
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data_bytes -= chunk_bytes;
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data_index += chunk_bytes;
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}
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return 0;
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}
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/*****************************************************************************/
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/* send close message to client */
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static int
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sound_send_close(void)
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{
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struct stream *s;
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int bytes;
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char *size_ptr;
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LOG(10, ("sound_send_close:"));
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/* send any left over data */
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sound_send_wave_data_chunk(g_buffer, g_buf_index);
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g_buf_index = 0;
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make_stream(s);
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init_stream(s, 8182);
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out_uint16_le(s, SNDC_CLOSE);
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size_ptr = s->p;
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out_uint16_le(s, 0); /* size, set later */
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s_mark_end(s);
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bytes = (int)((s->end - s->data) - 4);
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size_ptr[0] = bytes;
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size_ptr[1] = bytes >> 8;
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bytes = (int)(s->end - s->data);
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send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
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free_stream(s);
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return 0;
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}
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/*****************************************************************************/
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/* from client */
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static int APP_CC
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sound_process_training(struct stream *s, int size)
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{
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int time_diff;
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time_diff = g_time2() - g_training_sent_time;
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LOG(0, ("sound_process_training: round trip time %u", time_diff));
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return 0;
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}
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/*****************************************************************************/
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/* from client */
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static int APP_CC
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sound_process_wave_confirm(struct stream *s, int size)
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{
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int wTimeStamp;
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int cConfirmedBlockNo;
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int time;
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int time_diff;
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time = g_time2();
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in_uint16_le(s, wTimeStamp);
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in_uint8(s, cConfirmedBlockNo);
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time_diff = time - g_sent_time[cConfirmedBlockNo];
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LOG(10, ("sound_process_wave_confirm: wTimeStamp %d, "
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"cConfirmedBlockNo %d time diff %d",
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wTimeStamp, cConfirmedBlockNo, time_diff));
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return 0;
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}
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/*****************************************************************************/
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/* process message in from the audio source, eg pulse, alsa
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on it's way to the client */
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static int APP_CC
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process_pcm_message(int id, int size, struct stream *s)
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{
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switch (id)
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{
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case 0:
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sound_send_wave_data(s->p, size);
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break;
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case 1:
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sound_send_close();
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break;
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default:
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LOG(0, ("process_pcm_message: unknown id %d", id));
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break;
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}
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return 0;
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}
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/*****************************************************************************/
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/* data in from audio source, eg pulse, alsa */
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static int DEFAULT_CC
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sound_trans_audio_data_in(struct trans *trans)
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{
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struct stream *s;
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int id;
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int size;
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int error;
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if (trans == 0)
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{
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return 0;
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}
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if (trans != g_audio_c_trans)
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{
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return 1;
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}
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s = trans_get_in_s(trans);
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in_uint32_le(s, id);
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in_uint32_le(s, size);
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if ((id & ~3) || (size > 128 * 1024 + 8) || (size < 8))
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{
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LOG(0, ("sound_trans_audio_data_in: bad message id %d size %d", id, size));
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return 1;
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}
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LOG(10, ("sound_trans_audio_data_in: good message id %d size %d", id, size));
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error = trans_force_read(trans, size - 8);
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if (error == 0)
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{
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/* here, the entire message block is read in, process it */
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error = process_pcm_message(id, size - 8, s);
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}
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|
|
|
return error;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* this is a connection in on the unix domain socket */
|
|
static int DEFAULT_CC
|
|
sound_trans_audio_conn_in(struct trans *trans, struct trans *new_trans)
|
|
{
|
|
LOG(0, ("sound_trans_audio_conn_in:"));
|
|
|
|
if (trans == 0)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
if (trans != g_audio_l_trans)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
if (g_audio_c_trans != 0) /* if already set, error */
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
if (new_trans == 0)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
g_audio_c_trans = new_trans;
|
|
g_audio_c_trans->trans_data_in = sound_trans_audio_data_in;
|
|
g_audio_c_trans->header_size = 8;
|
|
trans_delete(g_audio_l_trans);
|
|
g_audio_l_trans = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int APP_CC
|
|
sound_init(void)
|
|
{
|
|
char port[256];
|
|
int error;
|
|
|
|
LOG(0, ("sound_init:"));
|
|
|
|
sound_send_server_formats();
|
|
g_audio_l_trans = trans_create(2, 128 * 1024, 8192);
|
|
g_snprintf(port, 255, CHANSRV_PORT_STR, g_display_num);
|
|
g_audio_l_trans->trans_conn_in = sound_trans_audio_conn_in;
|
|
error = trans_listen(g_audio_l_trans, port);
|
|
|
|
if (error != 0)
|
|
{
|
|
LOG(0, ("sound_init: trans_listen failed"));
|
|
}
|
|
|
|
#if defined(XRDP_SIMPLESOUND)
|
|
|
|
/* start thread to read raw audio data from pulseaudio device */
|
|
tc_thread_create(read_raw_audio_data, 0);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int APP_CC
|
|
sound_deinit(void)
|
|
{
|
|
if (g_audio_l_trans != 0)
|
|
{
|
|
trans_delete(g_audio_l_trans);
|
|
g_audio_l_trans = 0;
|
|
}
|
|
|
|
if (g_audio_c_trans != 0)
|
|
{
|
|
trans_delete(g_audio_c_trans);
|
|
g_audio_c_trans = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* data in from client ( client -> xrdp -> chansrv ) */
|
|
int APP_CC
|
|
sound_data_in(struct stream *s, int chan_id, int chan_flags, int length,
|
|
int total_length)
|
|
{
|
|
int code;
|
|
int size;
|
|
|
|
in_uint8(s, code);
|
|
in_uint8s(s, 1);
|
|
in_uint16_le(s, size);
|
|
|
|
switch (code)
|
|
{
|
|
case SNDC_WAVECONFIRM:
|
|
sound_process_wave_confirm(s, size);
|
|
break;
|
|
|
|
case SNDC_TRAINING:
|
|
sound_process_training(s, size);
|
|
break;
|
|
|
|
case SNDC_FORMATS:
|
|
sound_process_formats(s, size);
|
|
break;
|
|
|
|
default:
|
|
LOG(0, ("sound_data_in: unknown code %d size %d", code, size));
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int APP_CC
|
|
sound_get_wait_objs(tbus *objs, int *count, int *timeout)
|
|
{
|
|
int lcount;
|
|
|
|
lcount = *count;
|
|
|
|
if (g_audio_l_trans != 0)
|
|
{
|
|
objs[lcount] = g_audio_l_trans->sck;
|
|
lcount++;
|
|
}
|
|
|
|
if (g_audio_c_trans != 0)
|
|
{
|
|
objs[lcount] = g_audio_c_trans->sck;
|
|
lcount++;
|
|
}
|
|
|
|
*count = lcount;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int APP_CC
|
|
sound_check_wait_objs(void)
|
|
{
|
|
if (g_audio_l_trans != 0)
|
|
{
|
|
trans_check_wait_objs(g_audio_l_trans);
|
|
}
|
|
|
|
if (g_audio_c_trans != 0)
|
|
{
|
|
trans_check_wait_objs(g_audio_c_trans);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(XRDP_SIMPLESOUND)
|
|
|
|
#define AUDIO_BUF_SIZE 2048
|
|
|
|
static int DEFAULT_CC
|
|
sttrans_data_in(struct trans *self)
|
|
{
|
|
LOG(0, ("sttrans_data_in:\n"));
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* read raw audio data from pulseaudio device and write it
|
|
* to a unix domain socket on which trans server is listening
|
|
*/
|
|
|
|
static void *DEFAULT_CC
|
|
read_raw_audio_data(void *arg)
|
|
{
|
|
pa_sample_spec samp_spec;
|
|
pa_simple *simple = NULL;
|
|
uint32_t bytes_read;
|
|
char *cptr;
|
|
int i;
|
|
int error;
|
|
struct trans *strans;
|
|
char path[256];
|
|
struct stream *outs;
|
|
|
|
strans = trans_create(TRANS_MODE_UNIX, 8192, 8192);
|
|
|
|
if (strans == 0)
|
|
{
|
|
LOG(0, ("read_raw_audio_data: trans_create failed\n"));
|
|
return 0;
|
|
}
|
|
|
|
strans->trans_data_in = sttrans_data_in;
|
|
g_snprintf(path, 255, "/tmp/xrdp_chansrv_audio_socket_%d", g_display_num);
|
|
|
|
if (trans_connect(strans, "", path, 100) != 0)
|
|
{
|
|
LOG(0, ("read_raw_audio_data: trans_connect failed\n"));
|
|
trans_delete(strans);
|
|
return 0;
|
|
}
|
|
|
|
/* setup audio format */
|
|
samp_spec.format = PA_SAMPLE_S16LE;
|
|
samp_spec.rate = 44100;
|
|
samp_spec.channels = 2;
|
|
|
|
/* if we are root, then for first 8 seconds connection to pulseaudo server
|
|
fails; if we are non-root, then connection succeeds on first attempt;
|
|
for now we have changed code to be non-root, but this may change in the
|
|
future - so pretend we are root and try connecting to pulseaudio server
|
|
for upto one minute */
|
|
for (i = 0; i < 60; i++)
|
|
{
|
|
simple = pa_simple_new(NULL, "xrdp", PA_STREAM_RECORD, NULL,
|
|
"record", &samp_spec, NULL, NULL, &error);
|
|
|
|
if (simple)
|
|
{
|
|
/* connected to pulseaudio server */
|
|
LOG(0, ("read_raw_audio_data: connected to pulseaudio server\n"));
|
|
break;
|
|
}
|
|
|
|
LOG(0, ("read_raw_audio_data: ERROR creating PulseAudio async interface\n"));
|
|
LOG(0, ("read_raw_audio_data: %s\n", pa_strerror(error)));
|
|
g_sleep(1000);
|
|
}
|
|
|
|
if (i == 60)
|
|
{
|
|
/* failed to connect to audio server */
|
|
trans_delete(strans);
|
|
return NULL;
|
|
}
|
|
|
|
/* insert header just once */
|
|
outs = trans_get_out_s(strans, 8192);
|
|
out_uint32_le(outs, 0);
|
|
out_uint32_le(outs, AUDIO_BUF_SIZE + 8);
|
|
cptr = outs->p;
|
|
out_uint8s(outs, AUDIO_BUF_SIZE);
|
|
s_mark_end(outs);
|
|
|
|
while (1)
|
|
{
|
|
/* read a block of raw audio data... */
|
|
g_memset(cptr, 0, 4);
|
|
bytes_read = pa_simple_read(simple, cptr, AUDIO_BUF_SIZE, &error);
|
|
|
|
if (bytes_read < 0)
|
|
{
|
|
LOG(0, ("read_raw_audio_data: ERROR reading from pulseaudio stream\n"));
|
|
LOG(0, ("read_raw_audio_data: %s\n", pa_strerror(error)));
|
|
break;
|
|
}
|
|
|
|
/* bug workaround:
|
|
even when there is no audio data, pulseaudio is returning without
|
|
errors but the data itself is zero; we use this zero data to
|
|
determine that there is no audio data present */
|
|
if (*cptr == 0 && *(cptr + 1) == 0 && *(cptr + 2) == 0 && *(cptr + 3) == 0)
|
|
{
|
|
g_sleep(10);
|
|
continue;
|
|
}
|
|
|
|
if (trans_force_write_s(strans, outs) != 0)
|
|
{
|
|
LOG(0, ("read_raw_audio_data: ERROR writing audio data to server\n"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
pa_simple_free(simple);
|
|
trans_delete(strans);
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|