Commit e444ba72 authored by Laurent Aimar's avatar Laurent Aimar

clock: clean up/simplify + remove 1/90000 reference.

all: improve input rate (no more out of order/dropped pictures on
rate change).
parent bf16abda
......@@ -72,7 +72,7 @@ static void ClockNewRef( input_clock_t * p_pgrm,
*****************************************************************************/
/* Maximum gap allowed between two CRs. */
#define CR_MAX_GAP 2000000
#define CR_MAX_GAP (I64C(2000000)*100/9)
/* Latency introduced on DVDs with CR == 0 on chapter change - this is from
* my dice --Meuuh */
......@@ -81,22 +81,13 @@ static void ClockNewRef( input_clock_t * p_pgrm,
/*****************************************************************************
* ClockToSysdate: converts a movie clock to system date
*****************************************************************************/
static mtime_t ClockToSysdate( input_thread_t *p_input,
input_clock_t *cl, mtime_t i_clock )
static mtime_t ClockToSysdate( input_clock_t *cl, mtime_t i_clock )
{
mtime_t i_sysdate = 0;
if( cl->i_synchro_state == SYNCHRO_OK )
{
i_sysdate = (mtime_t)(i_clock - cl->cr_ref)
* (mtime_t)p_input->p->i_rate
* (mtime_t)300;
i_sysdate /= 27;
i_sysdate /= INPUT_RATE_DEFAULT;
i_sysdate += (mtime_t)cl->sysdate_ref;
}
if( cl->i_synchro_state != SYNCHRO_OK )
return 0;
return( i_sysdate );
return (i_clock - cl->cr_ref) * cl->i_rate / INPUT_RATE_DEFAULT +
cl->sysdate_ref;
}
/*****************************************************************************
......@@ -104,12 +95,10 @@ static mtime_t ClockToSysdate( input_thread_t *p_input,
*****************************************************************************
* Caution : the synchro state must be SYNCHRO_OK for this to operate.
*****************************************************************************/
static mtime_t ClockCurrent( input_thread_t *p_input,
input_clock_t *cl )
static mtime_t ClockCurrent( input_clock_t *cl )
{
return( (mdate() - cl->sysdate_ref) * 27 * INPUT_RATE_DEFAULT
/ p_input->p->i_rate / 300
+ cl->cr_ref );
return (mdate() - cl->sysdate_ref) * INPUT_RATE_DEFAULT / cl->i_rate +
cl->cr_ref;
}
/*****************************************************************************
......@@ -126,7 +115,8 @@ static void ClockNewRef( input_clock_t *cl,
* input_ClockInit: reinitializes the clock reference after a stream
* discontinuity
*****************************************************************************/
void input_ClockInit( input_clock_t *cl, vlc_bool_t b_master, int i_cr_average )
void input_ClockInit( input_thread_t *p_input,
input_clock_t *cl, vlc_bool_t b_master, int i_cr_average )
{
cl->i_synchro_state = SYNCHRO_START;
......@@ -137,6 +127,7 @@ void input_ClockInit( input_clock_t *cl, vlc_bool_t b_master, int i_cr_average )
cl->sysdate_ref = 0;
cl->delta_cr = 0;
cl->i_delta_cr_residue = 0;
cl->i_rate = p_input->p->i_rate;
cl->i_cr_average = i_cr_average;
......@@ -149,86 +140,69 @@ void input_ClockInit( input_clock_t *cl, vlc_bool_t b_master, int i_cr_average )
void input_ClockSetPCR( input_thread_t *p_input,
input_clock_t *cl, mtime_t i_clock )
{
const vlc_bool_t b_synchronize = p_input->b_can_pace_control && cl->b_master;
const mtime_t i_mdate = mdate();
if( ( cl->i_synchro_state != SYNCHRO_OK ) ||
( i_clock == 0 && cl->last_cr != 0 ) )
{
/* Feed synchro with a new reference point. */
ClockNewRef( cl, i_clock,
cl->last_pts + CR_MEAN_PTS_GAP > mdate() ?
cl->last_pts + CR_MEAN_PTS_GAP : mdate() );
__MAX( cl->last_pts + CR_MEAN_PTS_GAP, i_mdate ) );
cl->i_synchro_state = SYNCHRO_OK;
if( p_input->b_can_pace_control && cl->b_master )
{
cl->last_cr = i_clock;
if( !p_input->p->b_out_pace_control )
{
mtime_t i_wakeup = ClockToSysdate( p_input, cl, i_clock );
while( (i_wakeup - mdate()) / CLOCK_FREQ > 1 )
{
msleep( CLOCK_FREQ );
if( p_input->b_die ) i_wakeup = mdate();
}
mwait( i_wakeup );
}
}
else
if( !b_synchronize )
{
cl->last_cr = 0;
cl->last_sysdate = 0;
cl->delta_cr = 0;
cl->i_delta_cr_residue = 0;
cl->last_sysdate = 0;
cl->last_update = 0;
}
}
else
else if ( cl->last_cr != 0 &&
( (cl->last_cr - i_clock) > CR_MAX_GAP ||
(cl->last_cr - i_clock) < - CR_MAX_GAP ) )
{
if ( cl->last_cr != 0 &&
( (cl->last_cr - i_clock) > CR_MAX_GAP
|| (cl->last_cr - i_clock) < - CR_MAX_GAP ) )
{
/* Stream discontinuity, for which we haven't received a
* warning from the stream control facilities (dd-edited
* stream ?). */
msg_Warn( p_input, "clock gap, unexpected stream discontinuity" );
input_ClockInit( cl, cl->b_master, cl->i_cr_average );
}
/* Stream discontinuity, for which we haven't received a
* warning from the stream control facilities (dd-edited
* stream ?). */
msg_Warn( p_input, "clock gap, unexpected stream discontinuity" );
input_ClockInit( p_input, cl, cl->b_master, cl->i_cr_average );
}
cl->last_cr = i_clock;
cl->last_cr = i_clock;
cl->last_sysdate = i_mdate;
if( p_input->b_can_pace_control && cl->b_master )
if( b_synchronize )
{
/* Wait a while before delivering the packets to the decoder.
* In case of multiple programs, we arbitrarily follow the
* clock of the selected program. */
if( !p_input->p->b_out_pace_control )
{
/* Wait a while before delivering the packets to the decoder.
* In case of multiple programs, we arbitrarily follow the
* clock of the selected program. */
if( !p_input->p->b_out_pace_control )
mtime_t i_wakeup = ClockToSysdate( cl, i_clock );
while( (i_wakeup - mdate()) / CLOCK_FREQ > 1 )
{
mtime_t i_wakeup = ClockToSysdate( p_input, cl, i_clock );
while( (i_wakeup - mdate()) / CLOCK_FREQ > 1 )
{
msleep( CLOCK_FREQ );
if( p_input->b_die ) i_wakeup = mdate();
}
mwait( i_wakeup );
msleep( CLOCK_FREQ );
if( p_input->b_die ) i_wakeup = mdate();
}
mwait( i_wakeup );
}
else if ( mdate() - cl->last_sysdate > 200000 )
{
/* Smooth clock reference variations. */
mtime_t i_extrapoled_clock = ClockCurrent( p_input, cl );
mtime_t delta_cr;
/* Bresenham algorithm to smooth variations. */
delta_cr = ( cl->delta_cr * (cl->i_cr_average - 1)
+ ( i_extrapoled_clock - i_clock )
+ cl->i_delta_cr_residue )
/ cl->i_cr_average;
cl->i_delta_cr_residue = ( cl->delta_cr * (cl->i_cr_average - 1)
+ ( i_extrapoled_clock - i_clock )
+ cl->i_delta_cr_residue )
% cl->i_cr_average;
cl->delta_cr = delta_cr;
cl->last_sysdate = mdate();
}
}
else if ( i_mdate - cl->last_update > 200000 )
{
/* Smooth clock reference variations. */
const mtime_t i_extrapoled_clock = ClockCurrent( cl );
/* Bresenham algorithm to smooth variations. */
const mtime_t i_tmp = cl->delta_cr * (cl->i_cr_average - 1) +
( i_extrapoled_clock - i_clock ) * 1 +
cl->i_delta_cr_residue;
cl->i_delta_cr_residue = i_tmp % cl->i_cr_average;
cl->delta_cr = i_tmp / cl->i_cr_average;
cl->last_update = i_mdate;
}
}
......@@ -241,7 +215,21 @@ mtime_t input_ClockGetTS( input_thread_t * p_input,
if( cl->i_synchro_state != SYNCHRO_OK )
return 0;
cl->last_pts = ClockToSysdate( p_input, cl, i_ts + cl->delta_cr );
cl->last_pts = ClockToSysdate( cl, i_ts + cl->delta_cr );
return cl->last_pts + p_input->i_pts_delay;
}
/*****************************************************************************
* input_ClockSetRate:
*****************************************************************************/
void input_ClockSetRate( input_thread_t *p_input, input_clock_t *cl )
{
if( cl->i_synchro_state == SYNCHRO_OK )
{
/* Move the reference point */
cl->cr_ref = cl->last_cr;
cl->sysdate_ref = cl->last_sysdate;
}
cl->i_rate = p_input->p->i_rate;
}
......@@ -314,6 +314,14 @@ void input_EsOutDiscontinuity( es_out_t *out, vlc_bool_t b_flush, vlc_bool_t b_a
input_DecoderDiscontinuity( es->p_dec, b_flush );
}
}
void input_EsOutSetRate( es_out_t *out )
{
es_out_sys_t *p_sys = out->p_sys;
int i;
for( i = 0; i < p_sys->i_pgrm; i++ )
input_ClockSetRate( p_sys->p_input, &p_sys->pgrm[i]->clock );
}
void input_EsOutSetDelay( es_out_t *out, int i_cat, int64_t i_delay )
{
......@@ -507,7 +515,7 @@ static es_out_pgrm_t *EsOutProgramAdd( es_out_t *out, int i_group )
p_pgrm->psz_now_playing = NULL;
p_pgrm->psz_publisher = NULL;
p_pgrm->p_epg = NULL;
input_ClockInit( &p_pgrm->clock, VLC_FALSE, p_input->p->input.i_cr_average );
input_ClockInit( p_input, &p_pgrm->clock, VLC_FALSE, p_input->p->input.i_cr_average );
/* Append it */
TAB_APPEND( p_sys->i_pgrm, p_sys->pgrm, p_pgrm );
......@@ -1216,8 +1224,7 @@ static int EsOutSend( es_out_t *out, es_out_id_t *es, block_t *p_block )
else if( p_block->i_dts > 0 )
{
p_block->i_dts =
input_ClockGetTS( p_input, &p_pgrm->clock,
( p_block->i_dts + 11 ) * 9 / 100 ) + i_delay;
input_ClockGetTS( p_input, &p_pgrm->clock, p_block->i_dts ) + i_delay;
}
if( p_block->i_pts > 0 && (p_block->i_flags&BLOCK_FLAG_PREROLL) )
{
......@@ -1226,8 +1233,7 @@ static int EsOutSend( es_out_t *out, es_out_id_t *es, block_t *p_block )
else if( p_block->i_pts > 0 )
{
p_block->i_pts =
input_ClockGetTS( p_input, &p_pgrm->clock,
( p_block->i_pts + 11 ) * 9 / 100 ) + i_delay;
input_ClockGetTS( p_input, &p_pgrm->clock, p_block->i_pts ) + i_delay;
}
if ( es->fmt.i_codec == VLC_FOURCC( 't', 'e', 'l', 'x' ) )
{
......@@ -1506,8 +1512,7 @@ static int EsOutControl( es_out_t *out, int i_query, va_list args )
i_pcr = (int64_t)va_arg( args, int64_t );
/* search program */
/* 11 is a vodoo trick to avoid non_pcr*9/100 to be null */
input_ClockSetPCR( p_sys->p_input, &p_pgrm->clock,
(i_pcr + 11 ) * 9 / 100);
input_ClockSetPCR( p_sys->p_input, &p_pgrm->clock, i_pcr );
return VLC_SUCCESS;
}
......@@ -1525,8 +1530,7 @@ static int EsOutControl( es_out_t *out, int i_query, va_list args )
int64_t i_ts = (int64_t)va_arg( args, int64_t );
int64_t *pi_ts = (int64_t *)va_arg( args, int64_t * );
*pi_ts = input_ClockGetTS( p_sys->p_input,
&p_sys->p_pgrm->clock,
( i_ts + 11 ) * 9 / 100 );
&p_sys->p_pgrm->clock, i_ts );
return VLC_SUCCESS;
}
return VLC_EGENERIC;
......
......@@ -1672,12 +1672,11 @@ static vlc_bool_t Control( input_thread_t *p_input, int i_type,
/* We will not send audio data if new rate != default */
if( i_rate != INPUT_RATE_DEFAULT && p_input->p->i_rate == INPUT_RATE_DEFAULT )
input_EsOutDiscontinuity( p_input->p->p_es_out, VLC_TRUE, VLC_TRUE );
input_EsOutDiscontinuity( p_input->p->p_es_out, VLC_FALSE, VLC_TRUE );
p_input->p->i_rate = i_rate;
/* Reset clock */
es_out_Control( p_input->p->p_es_out, ES_OUT_RESET_PCR );
input_EsOutSetRate( p_input->p->p_es_out );
b_force_update = VLC_TRUE;
}
......
......@@ -263,6 +263,7 @@ void input_EsOutDelete( es_out_t * );
es_out_id_t *input_EsOutGetFromID( es_out_t *, int i_id );
void input_EsOutDiscontinuity( es_out_t *, vlc_bool_t b_flush, vlc_bool_t b_audio );
void input_EsOutSetDelay( es_out_t *, int i_cat, int64_t );
void input_EsOutSetRate( es_out_t * );
vlc_bool_t input_EsOutDecodersEmpty( es_out_t * );
/* clock.c */
......@@ -282,18 +283,22 @@ typedef struct
mtime_t last_cr; /* reference to detect unexpected stream
* discontinuities */
mtime_t last_pts;
mtime_t last_update;
int i_synchro_state;
vlc_bool_t b_master;
int i_rate;
/* Config */
int i_cr_average;
int i_delta_cr_residue;
} input_clock_t;
void input_ClockInit( input_clock_t *, vlc_bool_t b_master, int i_cr_average );
void input_ClockInit( input_thread_t *, input_clock_t *, vlc_bool_t b_master, int i_cr_average );
void input_ClockSetPCR( input_thread_t *, input_clock_t *, mtime_t );
mtime_t input_ClockGetTS( input_thread_t *, input_clock_t *, mtime_t );
void input_ClockSetRate( input_thread_t *, input_clock_t *cl );
/* Subtitles */
char **subtitles_Detect( input_thread_t *, char* path, const char *fname );
......
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