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#include <unistd.h> |
#include <unistd.h> |
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#include <fcntl.h> |
#include <fcntl.h> |
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#include <errno.h> |
#include <errno.h> |
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#include <sys/time.h> |
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#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
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#include <sys/soundcard.h> |
#include <sys/soundcard.h> |
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int g_dsp_fd; |
int g_dsp_fd; |
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BOOL g_dsp_busy = False; |
BOOL g_dsp_busy = False; |
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static int g_snd_rate; |
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static short g_samplewidth; |
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static struct audio_packet |
static struct audio_packet |
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{ |
{ |
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BOOL |
BOOL |
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wave_out_set_format(WAVEFORMATEX * pwfx) |
wave_out_set_format(WAVEFORMATEX * pwfx) |
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{ |
{ |
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int speed, channels, format; |
int channels, format; |
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ioctl(g_dsp_fd, SNDCTL_DSP_RESET, NULL); |
ioctl(g_dsp_fd, SNDCTL_DSP_RESET, NULL); |
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ioctl(g_dsp_fd, SNDCTL_DSP_SYNC, NULL); |
ioctl(g_dsp_fd, SNDCTL_DSP_SYNC, NULL); |
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else if (pwfx->wBitsPerSample == 16) |
else if (pwfx->wBitsPerSample == 16) |
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format = AFMT_S16_LE; |
format = AFMT_S16_LE; |
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g_samplewidth = pwfx->wBitsPerSample / 8; |
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if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
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{ |
{ |
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perror("SNDCTL_DSP_SETFMT"); |
perror("SNDCTL_DSP_SETFMT"); |
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return False; |
return False; |
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} |
} |
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speed = pwfx->nSamplesPerSec; |
if (channels == 2) |
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if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &speed) == -1) |
{ |
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g_samplewidth *= 2; |
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} |
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g_snd_rate = pwfx->nSamplesPerSec; |
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if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &g_snd_rate) == -1) |
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{ |
{ |
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perror("SNDCTL_DSP_SPEED"); |
perror("SNDCTL_DSP_SPEED"); |
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close(g_dsp_fd); |
close(g_dsp_fd); |
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struct audio_packet *packet; |
struct audio_packet *packet; |
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ssize_t len; |
ssize_t len; |
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STREAM out; |
STREAM out; |
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static long startedat_us; |
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static long startedat_s; |
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static BOOL started = False; |
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struct timeval tv; |
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while (1) |
while (1) |
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{ |
{ |
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packet = &packet_queue[queue_lo]; |
packet = &packet_queue[queue_lo]; |
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out = &packet->s; |
out = &packet->s; |
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if (!started) |
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{ |
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gettimeofday(&tv, NULL); |
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startedat_us = tv.tv_usec; |
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startedat_s = tv.tv_sec; |
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started = True; |
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} |
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len = write(g_dsp_fd, out->p, out->end - out->p); |
len = write(g_dsp_fd, out->p, out->end - out->p); |
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if (len == -1) |
if (len == -1) |
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{ |
{ |
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out->p += len; |
out->p += len; |
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if (out->p == out->end) |
if (out->p == out->end) |
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{ |
{ |
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rdpsnd_send_completion(packet->tick, packet->index); |
long long duration; |
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free(out->data); |
long elapsed; |
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queue_lo = (queue_lo + 1) % MAX_QUEUE; |
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gettimeofday(&tv, NULL); |
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duration = |
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(out->size * (1000000 / |
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(g_samplewidth * g_snd_rate))); |
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elapsed = |
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(tv.tv_sec - startedat_s) * 1000000 + |
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(tv.tv_usec - startedat_us); |
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if ( elapsed >= (duration * 7) / 10 ) |
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{ |
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rdpsnd_send_completion(packet->tick, packet->index); |
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free(out->data); |
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queue_lo = (queue_lo + 1) % MAX_QUEUE; |
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started = False; |
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} |
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else |
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{ |
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g_dsp_busy = 1; |
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return; |
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} |
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} |
} |
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} |
} |
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} |
} |