Skip to content

V
vlc
Commit f2b93f90 authored by Laurent Aimar's avatar Laurent Aimar
Browse files
Options

Removed stream immediate. 

Normal stream layer should be about the same latency now.
parent f5ba2e36
Hide whitespace changes
Inline Side-by-side
Showing with 4 additions and 217 deletions
src/input/stream.c
View file @ f2b93f90
......@@ -47,7 +47,6 @@
* - compute cost for seek
* - improve stream mode seeking with closest segments
* - ...
* - Maybe remove (block/stream) in favour of immediate
*/
/* Two methods:
......@@ -115,9 +114,8 @@ typedef struct
} access_entry_t;
typedef enum stream_read_method_t
typedef enum
{
STREAM_METHOD_IMMEDIATE,
STREAM_METHOD_BLOCK,
STREAM_METHOD_STREAM
} stream_read_method_t;
......@@ -159,13 +157,6 @@ struct stream_sys_t
} stream;
/* Method 3: for pf_read */
struct
{
int64_t i_end;
uint8_t *p_buffer;
} immediate;
/* Peek temporary buffer */
unsigned int i_peek;
uint8_t *p_peek;
......@@ -219,11 +210,6 @@ static int AStreamSeekStream( stream_t *s, int64_t i_pos );
static void AStreamPrebufferStream( stream_t *s );
static int AReadStream( stream_t *s, void *p_read, unsigned int i_read );
/* Method 3 */
static int AStreamReadImmediate( stream_t *s, void *p_read, unsigned int i_read );
static int AStreamPeekImmediate( stream_t *s, const uint8_t **pp_peek, unsigned int i_read );
static int AStreamSeekImmediate( stream_t *s, int64_t i_pos );
/* Common */
static int AStreamControl( stream_t *s, int i_query, va_list );
static void AStreamDestroy( stream_t *s );
......@@ -232,37 +218,6 @@ static int ASeek( stream_t *s, int64_t i_pos );
static int ARecordSetState( stream_t *s, bool b_record, const char *psz_extension );
static void ARecordWrite( stream_t *s, const uint8_t *p_buffer, size_t i_buffer );
/****************************************************************************
* Method 3 helpers:
****************************************************************************/
static inline int64_t stream_buffered_size( stream_t *s )
{
return s->p_sys->immediate.i_end;
}
static inline void stream_buffer_empty( stream_t *s, int length )
{
length = __MAX( stream_buffered_size( s ), length );
if( length )
{
memmove( s->p_sys->immediate.p_buffer,
s->p_sys->immediate.p_buffer + length,
stream_buffered_size( s ) - length );
}
s->p_sys->immediate.i_end -= length;
}
static inline void stream_buffer_fill( stream_t *s, int length )
{
s->p_sys->immediate.i_end += length;
}
static inline uint8_t * stream_buffer( stream_t *s )
{
return s->p_sys->immediate.p_buffer;
}
/****************************************************************************
* stream_CommonNew: create an empty stream structure
****************************************************************************/
......@@ -341,8 +296,6 @@ stream_t *stream_AccessNew( access_t *p_access, bool b_quick )
p_sys->p_access = p_access;
if( p_access->pf_block )
p_sys->method = STREAM_METHOD_BLOCK;
else if( var_CreateGetBool( s, "use-stream-immediate" ) )
p_sys->method = STREAM_METHOD_IMMEDIATE;
else
p_sys->method = STREAM_METHOD_STREAM;
......@@ -449,24 +402,6 @@ stream_t *stream_AccessNew( access_t *p_access, bool b_quick )
goto error;
}
}
else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
{
msg_Dbg( s, "Using AStream*Immediate" );
s->pf_read = AStreamReadImmediate;
s->pf_peek = AStreamPeekImmediate;
/* Allocate/Setup our tracks (useful to peek)*/
p_sys->immediate.i_end = 0;
p_sys->immediate.p_buffer = malloc( STREAM_CACHE_SIZE );
if( p_sys->immediate.p_buffer == NULL )
goto error;
msg_Dbg( s, "p_buffer %p-%p",
p_sys->immediate.p_buffer,
&p_sys->immediate.p_buffer[STREAM_CACHE_SIZE] );
}
else
{
int i;
......@@ -546,8 +481,6 @@ static void AStreamDestroy( stream_t *s )
if( p_sys->method == STREAM_METHOD_BLOCK )
block_ChainRelease( p_sys->block.p_first );
else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
free( p_sys->immediate.p_buffer );
else
free( p_sys->stream.p_buffer );
......@@ -599,10 +532,6 @@ void stream_AccessReset( stream_t *s )
/* Do the prebuffering */
AStreamPrebufferBlock( s );
}
else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
{
stream_buffer_empty( s, stream_buffered_size( s ) );
}
else
{
int i;
......@@ -695,8 +624,6 @@ static int AStreamControl( stream_t *s, int i_query, va_list args )
{
case STREAM_METHOD_BLOCK:
return AStreamSeekBlock( s, i_64 );
case STREAM_METHOD_IMMEDIATE:
return AStreamSeekImmediate( s, i_64 );
case STREAM_METHOD_STREAM:
return AStreamSeekStream( s, i_64 );
default:
......@@ -1543,10 +1470,10 @@ static int AStreamRefillStream( stream_t *s )
if( i_toread <= 0 ) return VLC_EGENERIC; /* EOF */
//#ifdef STREAM_DEBUG
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamRefillStream: used=%d toread=%d",
p_sys->stream.i_used, i_toread );
//#endif
#endif
i_start = mdate();
while( i_toread > 0 )
......@@ -1655,145 +1582,6 @@ static void AStreamPrebufferStream( stream_t *s )
}
}
/****************************************************************************
* Method 3:
****************************************************************************/
static int AStreamReadImmediate( stream_t *s, void *p_read, unsigned int i_read )
{
stream_sys_t *p_sys = s->p_sys;
uint8_t *p_data= (uint8_t*)p_read;
uint8_t *p_record = p_data;
unsigned int i_data;
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamReadImmediate p_read=%p i_read=%d",
p_read, i_read );
#endif
if( p_sys->record.b_active && !p_data )
p_record = p_data = malloc( i_read );
/* First, check if we already have some data in the buffer,
* that we could copy directly */
i_data = __MIN( stream_buffered_size( s ), i_read );
if( i_data > 0 )
{
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamReadImmediate: copy %u from %p", i_data, stream_buffer( s ) );
#endif
assert( i_data <= STREAM_CACHE_SIZE );
if( p_data )
{
memcpy( p_data, stream_buffer( s ), i_data );
p_data += i_data;
}
}
/* Now that we've read our buffer we don't need its i_copy bytes */
stream_buffer_empty( s, i_data );
/* Now check if we have still to really read some data */
while( i_data < i_read )
{
const unsigned int i_to_read = i_read - i_data;
int i_result;
if( p_data )
{
i_result = AReadStream( s, p_data, i_to_read );
}
else
{
void *p_dummy = malloc( i_to_read );
if( !p_dummy )
break;
i_result = AReadStream( s, p_dummy, i_to_read );
free( p_dummy );
}
if( i_result <= 0 )
break;
p_sys->i_pos += i_data;
if( p_data )
p_data += i_result;
i_data += i_result;
}
if( p_sys->record.b_active )
{
if( i_data > 0 && p_record != NULL)
ARecordWrite( s, p_record, i_data );
if( !p_read )
free( p_record );
}
return i_data;
}
static int AStreamPeekImmediate( stream_t *s, const uint8_t **pp_peek, unsigned int i_read )
{
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamPeekImmediate: %d size=%"PRId64,
i_read, size_buffered_size( s ) );
#endif
/* Avoid problem, but that shouldn't happen
* FIXME yes it can */
if( i_read > STREAM_CACHE_SIZE / 2 )
i_read = STREAM_CACHE_SIZE / 2;
int i_to_read = i_read - stream_buffered_size( s );
if( i_to_read > 0 )
{
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamPeekImmediate: Reading %d",
i_to_read );
#endif
i_to_read = AReadStream( s, stream_buffer( s ) + stream_buffered_size( s ),
i_to_read );
if( i_to_read > 0 )
stream_buffer_fill( s, i_to_read );
}
*pp_peek = stream_buffer( s );
return __MIN( stream_buffered_size( s ), i_read );
}
static int AStreamSeekImmediate( stream_t *s, int64_t i_pos )
{
stream_sys_t *p_sys = s->p_sys;
access_t *p_access = p_sys->p_access;
bool b_aseek;
#ifdef STREAM_DEBUG
msg_Dbg( s, "AStreamSeekImmediate to %"PRId64" pos=%"PRId64
i_pos, p_sys->i_pos );
#endif
access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
if( !b_aseek )
{
/* We can't do nothing */
msg_Dbg( s, "AStreamSeekImmediate: can't seek" );
return VLC_EGENERIC;
}
/* Just reset our buffer */
stream_buffer_empty( s, stream_buffered_size( s ) );
if( ASeek( s, i_pos ) )
return VLC_EGENERIC;
return VLC_SUCCESS;
}
/****************************************************************************
* stream_ReadLine:
****************************************************************************/
......
src/libvlc-module.c
View file @ f2b93f90
......@@ -1873,8 +1873,7 @@ vlc_module_begin ()
set_section( N_("Performance options"), NULL )
add_obsolete_bool( "minimize-threads" )
add_bool( "use-stream-immediate", false, NULL,
USE_STREAM_IMMEDIATE, USE_STREAM_IMMEDIATE_LONGTEXT, true );
add_obsolete_bool( "use-stream-immediate" );
add_obsolete_bool( "auto-adjust-pts-delay" )
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment