kolibrios-gitea/programs/media/Fplay/audio.c
Sergey Semyonov (Serge) 886c9d6c64 FPlay: intel-2D render frontend
git-svn-id: svn://kolibrios.org@3292 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-02-28 11:41:51 +00:00

358 lines
8.8 KiB
C

#include <stdint.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <stdio.h>
#include <string.h>
#include "../winlib/winlib.h"
#include "sound.h"
#include "fplay.h"
astream_t astream;
extern uint8_t *decoder_buffer;
int resampler_size;
volatile int sound_level_0;
volatile int sound_level_1;
volatile enum player_state player_state;
volatile enum player_state decoder_state;
volatile enum player_state sound_state;
extern volatile uint32_t driver_lock;
static SNDBUF hBuff;
static int snd_format;
int sample_rate;
static uint32_t samples_written = 0;
double audio_base = -1.0;
double get_audio_base();
int init_audio(int format)
{
int err;
int version =-1;
char *errstr;
mutex_lock(&driver_lock);
if((err = InitSound(&version)) !=0 )
{
mutex_unlock(&driver_lock);
errstr = "Sound service not installed\n\r";
goto exit_whith_error;
};
mutex_unlock(&driver_lock);
// printf("sound version 0x%x\n", version);
if( (SOUND_VERSION>(version&0xFFFF)) ||
(SOUND_VERSION<(version >> 16)))
{
errstr = "Sound service version mismatch\n\r";
goto exit_whith_error;
}
snd_format = format;
create_thread(audio_thread, 0, 163840);
return 1;
exit_whith_error:
printf(errstr);
return 0;
};
void set_audio_volume(int left, int right)
{
SetVolume(hBuff, left, right);
};
static uint64_t samples_lost;
static double audio_delta;
static double last_time_stamp;
double get_master_clock(void)
{
double tstamp;
GetTimeStamp(hBuff, &tstamp);
return tstamp - audio_delta;
};
int decode_audio(AVCodecContext *ctx, queue_t *qa)
{
AVPacket pkt;
AVPacket pkt_tmp;
int len;
int data_size=0;
if( astream.count > AVCODEC_MAX_AUDIO_FRAME_SIZE*7)
return -1;
if( get_packet(qa, &pkt) == 0 )
return 0;
// __asm__("int3");
pkt_tmp = pkt;
while(pkt_tmp.size > 0)
{
data_size = AVCODEC_MAX_AUDIO_FRAME_SIZE;
len = avcodec_decode_audio3(ctx,(int16_t*)decoder_buffer,
&data_size, &pkt_tmp);
if(len >= 0)
{
// if(audio_base == -1.0)
// {
// if (pkt.pts != AV_NOPTS_VALUE)
// audio_base = get_audio_base() * pkt.pts;
// printf("audio base %f\n", audio_base);
// };
pkt_tmp.data += len;
pkt_tmp.size -= len;
mutex_lock(&astream.lock);
memcpy(astream.buffer+astream.count, decoder_buffer, data_size);
astream.count += data_size;
mutex_unlock(&astream.lock);
}
else pkt_tmp.size = 0;
}
av_free_packet(&pkt);
return 1;
};
static void sync_audio(SNDBUF hbuff, int buffsize)
{
SND_EVENT evnt;
uint32_t offset;
double time_stamp;
#ifdef BLACK_MAGIC_SOUND
while( player_state != CLOSED)
{
GetNotify(&evnt);
if(evnt.code != 0xFF000001)
{
printf("invalid event code %d\n\r", evnt.code);
continue;
}
if(evnt.stream != hbuff)
{
printf("invalid stream %x hBuff= %x\n\r",
evnt.stream, hbuff);
continue;
}
GetTimeStamp(hbuff, &time_stamp);
audio_delta = time_stamp - last_time_stamp;
offset = evnt.offset;
mutex_lock(&astream.lock);
{
if(astream.count < buffsize)
{
memset(astream.buffer+astream.count,
0, buffsize-astream.count);
astream.count = buffsize;
};
SetBuffer(hbuff, astream.buffer, offset, buffsize);
samples_written+= buffsize/4;
astream.count -= buffsize;
if(astream.count)
memcpy(astream.buffer, astream.buffer+buffsize, astream.count);
mutex_unlock(&astream.lock);
};
break;
};
#endif
};
int audio_thread(void *param)
{
SND_EVENT evnt;
int buffsize;
int samples;
int err;
char *errstr;
int active;
if((err = CreateBuffer(snd_format|PCM_RING,0, &hBuff)) != 0)
{
errstr = "Cannot create sound buffer\n\r";
goto exit_whith_error;
};
SetVolume(hBuff,-1875,-1875);
if((err = GetBufferSize(hBuff, &buffsize)) != 0)
{
errstr = "Cannot get buffer size\n\r";
goto exit_whith_error;
};
resampler_size = buffsize = buffsize/2;
samples = buffsize/4;
while( player_state != CLOSED)
{
uint32_t offset;
double event_stamp, wait_stamp;
int too_late = 0;
switch(sound_state)
{
case PREPARE:
mutex_lock(&astream.lock);
if(astream.count < buffsize*2)
{
memset(astream.buffer+astream.count,
0, buffsize*2-astream.count);
astream.count = buffsize*2;
};
SetBuffer(hBuff, astream.buffer, 0, buffsize*2);
astream.count -= buffsize*2;
if(astream.count)
memcpy(astream.buffer, astream.buffer+buffsize*2, astream.count);
mutex_unlock(&astream.lock);
SetTimeBase(hBuff, audio_base);
case PAUSE_2_PLAY:
GetTimeStamp(hBuff, &last_time_stamp);
// printf("last audio time stamp %f\n", last_time_stamp);
if((err = PlayBuffer(hBuff, 0)) !=0 )
{
errstr = "Cannot play buffer\n\r";
goto exit_whith_error;
};
active = 1;
sync_audio(hBuff, buffsize);
sound_state = PLAY;
// printf("render: set audio latency to %f\n", audio_delta);
/* breaktrough */
case PLAY:
GetNotify(&evnt);
if(evnt.code != 0xFF000001)
{
printf("invalid event code %d\n\r", evnt.code);
continue;
}
if(evnt.stream != hBuff)
{
printf("invalid stream %x hBuff= %x\n\r",
evnt.stream, hBuff);
continue;
};
offset = evnt.offset;
mutex_lock(&astream.lock);
if(astream.count < buffsize)
{
memset(astream.buffer+astream.count,
0, buffsize-astream.count);
astream.count = buffsize;
};
SetBuffer(hBuff, astream.buffer, offset, buffsize);
{
double val = 0;
int16_t *src = (int16_t*)astream.buffer;
int samples = buffsize/2;
int i;
for(i = 0, val = 0; i < samples/2; i++, src++)
if(val < abs(*src))
val= abs(*src); // * *src;
sound_level_0 = val; //sqrt(val / (samples/2));
for(i = 0, val = 0; i < samples/2; i++, src++)
if(val < abs(*src))
val= abs(*src); // * *src;
sound_level_1 = val; //sqrt(val / (samples/2));
// printf("%d\n", sound_level);
};
samples_written+= buffsize/4;
astream.count -= buffsize;
if(astream.count)
memcpy(astream.buffer, astream.buffer+buffsize, astream.count);
mutex_unlock(&astream.lock);
break;
case PLAY_2_STOP:
if( active )
{
ResetBuffer(hBuff, SND_RESET_ALL);
audio_base = -1.0;
active = 0;
}
sound_state = STOP;
break;
case PLAY_2_PAUSE:
if( active )
{
StopBuffer(hBuff);
};
sound_state = PAUSE;
case PAUSE:
case STOP:
delay(1);
};
}
StopBuffer(hBuff);
DestroyBuffer(hBuff);
return 0;
exit_whith_error:
printf(errstr);
return -1;
};