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#include "rdesktop.h" |
#include "rdesktop.h" |
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#include "rdpsnd.h" |
#include "rdpsnd.h" |
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#include "rdpsnd_dsp.h" |
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#define RDPSND_CLOSE 1 |
#define RDPSND_CLOSE 1 |
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#define RDPSND_WRITE 2 |
#define RDPSND_WRITE 2 |
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int g_dsp_fd; |
int g_dsp_fd; |
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static VCHANNEL *rdpsnd_channel; |
static VCHANNEL *rdpsnd_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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static BOOL device_open; |
static BOOL device_open; |
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static WAVEFORMATEX formats[MAX_FORMATS]; |
static WAVEFORMATEX formats[MAX_FORMATS]; |
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static unsigned int format_count; |
static unsigned int format_count; |
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static unsigned int current_format; |
static unsigned int current_format; |
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static unsigned int queue_hi, queue_lo; |
unsigned int queue_hi, queue_lo; |
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static struct audio_packet packet_queue[MAX_QUEUE]; |
struct audio_packet packet_queue[MAX_QUEUE]; |
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void (*wave_out_play) (void); |
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static STREAM |
static STREAM |
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rdpsnd_init_packet(uint16 type, uint16 size) |
rdpsnd_init_packet(uint16 type, uint16 size) |
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in_uint16_le(in, in_format_count); |
in_uint16_le(in, in_format_count); |
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in_uint8s(in, 4); /* pad, status, pad */ |
in_uint8s(in, 4); /* pad, status, pad */ |
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if (wave_out_open()) |
if (current_driver->wave_out_open()) |
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{ |
{ |
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wave_out_close(); |
current_driver->wave_out_close(); |
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device_available = True; |
device_available = True; |
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} |
} |
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in_uint8a(in, format->cb, readcnt); |
in_uint8a(in, format->cb, readcnt); |
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in_uint8s(in, discardcnt); |
in_uint8s(in, discardcnt); |
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if (device_available && wave_out_format_supported(format)) |
if (device_available && current_driver->wave_out_format_supported(format)) |
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{ |
{ |
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format_count++; |
format_count++; |
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if (format_count == MAX_FORMATS) |
if (format_count == MAX_FORMATS) |
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static uint16 tick, format; |
static uint16 tick, format; |
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static uint8 packet_index; |
static uint8 packet_index; |
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static BOOL awaiting_data_packet; |
static BOOL awaiting_data_packet; |
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static unsigned char missing_bytes[4] = { 0, 0, 0, 0 }; |
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#ifdef RDPSND_DEBUG |
#ifdef RDPSND_DEBUG |
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printf("RDPSND recv:\n"); |
printf("RDPSND recv:\n"); |
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if (!device_open || (format != current_format)) |
if (!device_open || (format != current_format)) |
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{ |
{ |
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if (!device_open && !wave_out_open()) |
if (!device_open && !current_driver->wave_out_open()) |
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{ |
{ |
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rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
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return; |
return; |
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} |
} |
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if (!wave_out_set_format(&formats[format])) |
if (!current_driver->wave_out_set_format(&formats[format])) |
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{ |
{ |
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rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
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wave_out_close(); |
current_driver->wave_out_close(); |
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device_open = False; |
device_open = False; |
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return; |
return; |
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} |
} |
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current_format = format; |
current_format = format; |
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} |
} |
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rdpsnd_queue_write(s, tick, packet_index); |
/* Insert the 4 missing bytes retrieved from last RDPSND_WRITE */ |
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memcpy(s->data, missing_bytes, 4); |
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current_driver-> |
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wave_out_write(rdpsnd_dsp_process |
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(s, current_driver, &formats[current_format]), tick, |
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packet_index); |
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awaiting_data_packet = False; |
awaiting_data_packet = False; |
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return; |
return; |
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} |
} |
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in_uint16_le(s, tick); |
in_uint16_le(s, tick); |
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in_uint16_le(s, format); |
in_uint16_le(s, format); |
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in_uint8(s, packet_index); |
in_uint8(s, packet_index); |
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/* Here are our lost bytes, but why? */ |
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memcpy(missing_bytes, s->end - 4, 4); |
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awaiting_data_packet = True; |
awaiting_data_packet = True; |
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break; |
break; |
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case RDPSND_CLOSE: |
case RDPSND_CLOSE: |
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wave_out_close(); |
current_driver->wave_out_close(); |
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device_open = False; |
device_open = False; |
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break; |
break; |
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case RDPSND_NEGOTIATE: |
case RDPSND_NEGOTIATE: |
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in_uint32(s, volume); |
in_uint32(s, volume); |
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if (device_open) |
if (device_open) |
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{ |
{ |
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wave_out_volume((volume & 0xffff), (volume & 0xffff0000) >> 16); |
current_driver->wave_out_volume((volume & 0xffff), |
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(volume & 0xffff0000) >> 16); |
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} |
} |
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break; |
break; |
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default: |
default: |
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} |
} |
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} |
} |
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static BOOL |
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rdpsnd_auto_open(void) |
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{ |
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static BOOL failed = False; |
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if (!failed) |
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{ |
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struct audio_driver *auto_driver = current_driver; |
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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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return True; |
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} |
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g_dsp_fd = 0; |
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current_driver = current_driver->next; |
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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 = auto_driver; |
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} |
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return False; |
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} |
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static void |
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rdpsnd_register_drivers(char *options) |
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{ |
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struct audio_driver **reg; |
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/* The order of registrations define the probe-order |
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when opening the device for the first time */ |
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reg = &drivers; |
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#if defined(RDPSND_ALSA) |
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*reg = alsa_register(options); |
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reg = &((*reg)->next); |
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#endif |
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#if defined(RDPSND_SUN) |
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*reg = sun_register(options); |
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reg = &((*reg)->next); |
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#endif |
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#if defined(RDPSND_OSS) |
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*reg = oss_register(options); |
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reg = &((*reg)->next); |
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#endif |
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#if defined(RDPSND_SGI) |
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*reg = sgi_register(options); |
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reg = &((*reg)->next); |
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#endif |
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#if defined(RDPSND_LIBAO) |
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*reg = libao_register(options); |
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reg = &((*reg)->next); |
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#endif |
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} |
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BOOL |
BOOL |
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rdpsnd_init(void) |
rdpsnd_init(char *optarg) |
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{ |
{ |
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static struct audio_driver auto_driver; |
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struct audio_driver *pos; |
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char *driver = NULL, *options = NULL; |
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drivers = NULL; |
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rdpsnd_channel = |
rdpsnd_channel = |
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channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
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rdpsnd_process); |
rdpsnd_process); |
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return (rdpsnd_channel != NULL); |
if (rdpsnd_channel == NULL) |
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{ |
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error("channel_register\n"); |
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return False; |
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} |
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if (optarg != NULL && strlen(optarg) > 0) |
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{ |
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driver = options = optarg; |
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while (*options != '\0' && *options != ':') |
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options++; |
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if (*options == ':') |
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{ |
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*options = '\0'; |
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options++; |
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} |
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if (*options == '\0') |
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options = NULL; |
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} |
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rdpsnd_register_drivers(options); |
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if (!driver) |
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{ |
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auto_driver.wave_out_open = &rdpsnd_auto_open; |
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current_driver = &auto_driver; |
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return True; |
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} |
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pos = drivers; |
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while (pos != NULL) |
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{ |
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if (!strcmp(pos->name, driver)) |
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{ |
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DEBUG(("selected %s\n", pos->name)); |
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current_driver = pos; |
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return True; |
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} |
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pos = pos->next; |
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} |
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return False; |
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} |
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void |
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rdpsnd_show_help(void) |
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{ |
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struct audio_driver *pos; |
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rdpsnd_register_drivers(NULL); |
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pos = drivers; |
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while (pos != NULL) |
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{ |
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fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
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pos = pos->next; |
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} |
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} |
} |
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void |
void |
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rdpsnd_play(void) |
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{ |
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current_driver->wave_out_play(); |
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} |
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inline void |
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rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
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{ |
{ |
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struct audio_packet *packet = &packet_queue[queue_hi]; |
struct audio_packet *packet = &packet_queue[queue_hi]; |
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packet->s = *s; |
packet->s = *s; |
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packet->tick = tick; |
packet->tick = tick; |
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packet->index = index; |
packet->index = index; |
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packet->s.p += 4; |
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/* we steal the data buffer from s, give it a new one */ |
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s->data = malloc(s->size); |
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if (!g_dsp_busy) |
if (!g_dsp_busy) |
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wave_out_play(); |
current_driver->wave_out_play(); |
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} |
} |
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inline struct audio_packet * |
inline struct audio_packet * |
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inline void |
inline void |
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rdpsnd_queue_next(void) |
rdpsnd_queue_next(void) |
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{ |
{ |
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free(packet_queue[queue_lo].s.data); |
xfree(packet_queue[queue_lo].s.data); |
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queue_lo = (queue_lo + 1) % MAX_QUEUE; |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
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} |
} |
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