X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Faudio_output%2Fcommon.c;h=fe041c5008d157a6b5dd1495e35721f4470cf098;hb=1b6fc30078a4ab7fdb7a6309743020499c520de9;hp=97155f4e567280f5ed267df65b3b5901f6b49c18;hpb=d1296b32da7293d0f780cdb9b4782c84e39fb1da;p=vlc diff --git a/src/audio_output/common.c b/src/audio_output/common.c index 97155f4e56..fe041c5008 100644 --- a/src/audio_output/common.c +++ b/src/audio_output/common.c @@ -1,8 +1,8 @@ /***************************************************************************** * common.c : audio output management of common data structures ***************************************************************************** - * Copyright (C) 2002 VideoLAN - * $Id: common.c,v 1.8 2002/11/13 20:51:04 sam Exp $ + * Copyright (C) 2002-2007 the VideoLAN team + * $Id$ * * Authors: Christophe Massiot * @@ -10,7 +10,7 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the @@ -18,31 +18,34 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ -#include /* calloc(), malloc(), free() */ -#include - -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif -#include "audio_output.h" +#include +#include #include "aout_internal.h" - /* * Instances management (internal and external) */ +/* Local functions */ +static void aout_Destructor( vlc_object_t * p_this ); + /***************************************************************************** * aout_New: initialize aout structure *****************************************************************************/ aout_instance_t * __aout_New( vlc_object_t * p_parent ) { aout_instance_t * p_aout; + vlc_value_t val; /* Allocate descriptor. */ p_aout = vlc_object_create( p_parent, VLC_OBJECT_AOUT ); @@ -52,30 +55,33 @@ aout_instance_t * __aout_New( vlc_object_t * p_parent ) } /* Initialize members. */ - vlc_mutex_init( p_parent, &p_aout->input_fifos_lock ); - vlc_mutex_init( p_parent, &p_aout->mixer_lock ); - vlc_mutex_init( p_parent, &p_aout->output_fifo_lock ); + vlc_mutex_init( &p_aout->input_fifos_lock ); + vlc_mutex_init( &p_aout->mixer_lock ); + vlc_mutex_init( &p_aout->output_fifo_lock ); p_aout->i_nb_inputs = 0; p_aout->mixer.f_multiplier = 1.0; p_aout->mixer.b_error = 1; + p_aout->output.b_error = 1; p_aout->output.b_starving = 1; - vlc_object_attach( p_aout, p_parent->p_vlc ); + var_Create( p_aout, "intf-change", VLC_VAR_BOOL ); + val.b_bool = true; + var_Set( p_aout, "intf-change", val ); + + vlc_object_set_destructor( p_aout, aout_Destructor ); return p_aout; } /***************************************************************************** - * aout_Delete: destroy aout structure + * aout_Destructor: destroy aout structure *****************************************************************************/ -void aout_Delete( aout_instance_t * p_aout ) +static void aout_Destructor( vlc_object_t * p_this ) { + aout_instance_t * p_aout = (aout_instance_t *)p_this; vlc_mutex_destroy( &p_aout->input_fifos_lock ); vlc_mutex_destroy( &p_aout->mixer_lock ); vlc_mutex_destroy( &p_aout->output_fifo_lock ); - - /* Free structure. */ - vlc_object_destroy( p_aout ); } @@ -86,116 +92,165 @@ void aout_Delete( aout_instance_t * p_aout ) /***************************************************************************** * aout_FormatNbChannels : return the number of channels *****************************************************************************/ -int aout_FormatNbChannels( audio_sample_format_t * p_format ) +unsigned int aout_FormatNbChannels( const audio_sample_format_t * p_format ) { - int i_nb; + static const uint32_t pi_channels[] = + { AOUT_CHAN_CENTER, AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, + AOUT_CHAN_REARCENTER, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, + AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, AOUT_CHAN_LFE }; + unsigned int i_nb = 0, i; - switch ( p_format->i_channels & AOUT_CHAN_MASK ) + for ( i = 0; i < sizeof(pi_channels)/sizeof(uint32_t); i++ ) { - case AOUT_CHAN_CHANNEL1: - case AOUT_CHAN_CHANNEL2: - case AOUT_CHAN_MONO: - i_nb = 1; - break; - - case AOUT_CHAN_CHANNEL: - case AOUT_CHAN_STEREO: - case AOUT_CHAN_DOLBY: - i_nb = 2; - break; - - case AOUT_CHAN_3F: - case AOUT_CHAN_2F1R: - i_nb = 3; - break; - - case AOUT_CHAN_3F1R: - case AOUT_CHAN_2F2R: - i_nb = 4; - break; - - case AOUT_CHAN_3F2R: - i_nb = 5; - break; - - default: - i_nb = 0; + if ( p_format->i_physical_channels & pi_channels[i] ) i_nb++; } - if ( p_format->i_channels & AOUT_CHAN_LFE ) - return i_nb + 1; - else - return i_nb; + return i_nb; } /***************************************************************************** - * aout_FormatPrepare : compute the number of bytes per frame & frame length + * aout_BitsPerSample : get the number of bits per sample *****************************************************************************/ -void aout_FormatPrepare( audio_sample_format_t * p_format ) +unsigned int aout_BitsPerSample( vlc_fourcc_t i_format ) { - int i_result; - - switch ( p_format->i_format ) + switch( i_format ) { case VLC_FOURCC('u','8',' ',' '): case VLC_FOURCC('s','8',' ',' '): - i_result = 1; - break; + return 8; case VLC_FOURCC('u','1','6','l'): case VLC_FOURCC('s','1','6','l'): case VLC_FOURCC('u','1','6','b'): case VLC_FOURCC('s','1','6','b'): - i_result = 2; - break; + return 16; + + case VLC_FOURCC('u','2','4','l'): + case VLC_FOURCC('s','2','4','l'): + case VLC_FOURCC('u','2','4','b'): + case VLC_FOURCC('s','2','4','b'): + return 24; case VLC_FOURCC('f','l','3','2'): case VLC_FOURCC('f','i','3','2'): - i_result = 4; - break; + return 32; + + case VLC_FOURCC('f','l','6','4'): + return 64; - case VLC_FOURCC('s','p','d','i'): - case VLC_FOURCC('a','5','2',' '): - case VLC_FOURCC('d','t','s',' '): default: /* For these formats the caller has to indicate the parameters * by hand. */ - return; + return 0; } +} - p_format->i_bytes_per_frame = i_result * aout_FormatNbChannels( p_format ); - p_format->i_frame_length = 1; +/***************************************************************************** + * aout_FormatPrepare : compute the number of bytes per frame & frame length + *****************************************************************************/ +void aout_FormatPrepare( audio_sample_format_t * p_format ) +{ + p_format->i_bitspersample = aout_BitsPerSample( p_format->i_format ); + if( p_format->i_bitspersample > 0 ) + { + p_format->i_bytes_per_frame = ( p_format->i_bitspersample / 8 ) + * aout_FormatNbChannels( p_format ); + p_format->i_frame_length = 1; + } } /***************************************************************************** - * FormatPrintChannels : print a channel in a human-readable form + * aout_FormatPrintChannels : print a channel in a human-readable form *****************************************************************************/ -static const char * FormatPrintChannels( int i_channels ) +const char * aout_FormatPrintChannels( const audio_sample_format_t * p_format ) { - switch ( i_channels ) + switch ( p_format->i_physical_channels & AOUT_CHAN_PHYSMASK ) { - case AOUT_CHAN_CHANNEL: return "CHANNEL"; - case AOUT_CHAN_CHANNEL1: return "CHANNEL1"; - case AOUT_CHAN_CHANNEL2: return "CHANNEL2"; - case AOUT_CHAN_MONO: return "MONO"; - case AOUT_CHAN_STEREO: return "STEREO"; - case AOUT_CHAN_3F: return "3F"; - case AOUT_CHAN_2F1R: return "2F1R"; - case AOUT_CHAN_3F1R: return "3F1R"; - case AOUT_CHAN_2F2R: return "2F2R"; - case AOUT_CHAN_3F2R: return "3F2R"; - case AOUT_CHAN_DOLBY: return "DOLBY"; - case AOUT_CHAN_CHANNEL | AOUT_CHAN_LFE: return "CHANNEL|LFE"; - case AOUT_CHAN_CHANNEL1 | AOUT_CHAN_LFE: return "CHANNEL1|LFE"; - case AOUT_CHAN_CHANNEL2 | AOUT_CHAN_LFE: return "CHANNEL2|LFE"; - case AOUT_CHAN_MONO | AOUT_CHAN_LFE: return "MONO|LFE"; - case AOUT_CHAN_STEREO | AOUT_CHAN_LFE: return "STEREO|LFE"; - case AOUT_CHAN_3F | AOUT_CHAN_LFE: return "3F|LFE"; - case AOUT_CHAN_2F1R | AOUT_CHAN_LFE: return "2F1R|LFE"; - case AOUT_CHAN_3F1R | AOUT_CHAN_LFE: return "3F1R|LFE"; - case AOUT_CHAN_2F2R | AOUT_CHAN_LFE: return "2F2R|LFE"; - case AOUT_CHAN_3F2R | AOUT_CHAN_LFE: return "3F2R|LFE"; - case AOUT_CHAN_DOLBY | AOUT_CHAN_LFE: return "DOLBY|LFE"; + case AOUT_CHAN_CENTER: + if ( (p_format->i_original_channels & AOUT_CHAN_CENTER) + || (p_format->i_original_channels + & (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)) ) + return "Mono"; + else if ( p_format->i_original_channels & AOUT_CHAN_LEFT ) + return "Left"; + return "Right"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT: + if ( p_format->i_original_channels & AOUT_CHAN_REVERSESTEREO ) + { + if ( p_format->i_original_channels & AOUT_CHAN_DOLBYSTEREO ) + return "Dolby/Reverse"; + return "Stereo/Reverse"; + } + else + { + if ( p_format->i_original_channels & AOUT_CHAN_DOLBYSTEREO ) + return "Dolby"; + else if ( p_format->i_original_channels & AOUT_CHAN_DUALMONO ) + return "Dual-mono"; + else if ( p_format->i_original_channels == AOUT_CHAN_CENTER ) + return "Stereo/Mono"; + else if ( !(p_format->i_original_channels & AOUT_CHAN_RIGHT) ) + return "Stereo/Left"; + else if ( !(p_format->i_original_channels & AOUT_CHAN_LEFT) ) + return "Stereo/Right"; + return "Stereo"; + } + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER: + return "3F"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARCENTER: + return "2F1R"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARCENTER: + return "3F1R"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT: + return "2F2R"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT: + return "3F2R"; + + case AOUT_CHAN_CENTER | AOUT_CHAN_LFE: + if ( (p_format->i_original_channels & AOUT_CHAN_CENTER) + || (p_format->i_original_channels + & (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)) ) + return "Mono/LFE"; + else if ( p_format->i_original_channels & AOUT_CHAN_LEFT ) + return "Left/LFE"; + return "Right/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_LFE: + if ( p_format->i_original_channels & AOUT_CHAN_DOLBYSTEREO ) + return "Dolby/LFE"; + else if ( p_format->i_original_channels & AOUT_CHAN_DUALMONO ) + return "Dual-mono/LFE"; + else if ( p_format->i_original_channels == AOUT_CHAN_CENTER ) + return "Mono/LFE"; + else if ( !(p_format->i_original_channels & AOUT_CHAN_RIGHT) ) + return "Stereo/Left/LFE"; + else if ( !(p_format->i_original_channels & AOUT_CHAN_LEFT) ) + return "Stereo/Right/LFE"; + return "Stereo/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_LFE: + return "3F/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARCENTER + | AOUT_CHAN_LFE: + return "2F1R/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARCENTER | AOUT_CHAN_LFE: + return "3F1R/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE: + return "2F2R/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE: + return "3F2R/LFE"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT + | AOUT_CHAN_MIDDLERIGHT: + return "3F2M2R"; + case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER + | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT + | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_LFE: + return "3F2M2R/LFE"; } return "ERROR"; @@ -207,9 +262,10 @@ static const char * FormatPrintChannels( int i_channels ) void aout_FormatPrint( aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format ) { - msg_Dbg( p_aout, "%s format='%4.4s' rate=%d channels=%s", psz_text, + msg_Dbg( p_aout, "%s '%4.4s' %d Hz %s frame=%d samples/%d bytes", psz_text, (char *)&p_format->i_format, p_format->i_rate, - FormatPrintChannels( p_format->i_channels ) ); + aout_FormatPrintChannels( p_format ), + p_format->i_frame_length, p_format->i_bytes_per_frame ); } /***************************************************************************** @@ -219,12 +275,12 @@ void aout_FormatsPrint( aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format1, const audio_sample_format_t * p_format2 ) { - msg_Dbg( p_aout, "%s format='%4.4s'->'%4.4s' rate=%d->%d channels=%s->%s", + msg_Dbg( p_aout, "%s '%4.4s'->'%4.4s' %d Hz->%d Hz %s->%s", psz_text, (char *)&p_format1->i_format, (char *)&p_format2->i_format, p_format1->i_rate, p_format2->i_rate, - FormatPrintChannels( p_format1->i_channels ), - FormatPrintChannels( p_format2->i_channels ) ); + aout_FormatPrintChannels( p_format1 ), + aout_FormatPrintChannels( p_format2 ) ); } @@ -238,8 +294,13 @@ void aout_FormatsPrint( aout_instance_t * p_aout, const char * psz_text, * aout_FifoInit : initialize the members of a FIFO *****************************************************************************/ void aout_FifoInit( aout_instance_t * p_aout, aout_fifo_t * p_fifo, - u32 i_rate ) + uint32_t i_rate ) { + if( i_rate == 0 ) + { + msg_Err( p_aout, "initialising fifo with zero divider" ); + } + p_fifo->p_first = NULL; p_fifo->pp_last = &p_fifo->p_first; aout_DateInit( &p_fifo->end_date, i_rate ); @@ -251,6 +312,7 @@ void aout_FifoInit( aout_instance_t * p_aout, aout_fifo_t * p_fifo, void aout_FifoPush( aout_instance_t * p_aout, aout_fifo_t * p_fifo, aout_buffer_t * p_buffer ) { + (void)p_aout; *p_fifo->pp_last = p_buffer; p_fifo->pp_last = &p_buffer->p_next; *p_fifo->pp_last = NULL; @@ -259,7 +321,7 @@ void aout_FifoPush( aout_instance_t * p_aout, aout_fifo_t * p_fifo, { p_buffer->start_date = aout_DateGet( &p_fifo->end_date ); p_buffer->end_date = aout_DateIncrement( &p_fifo->end_date, - p_buffer->i_nb_samples ); + p_buffer->i_nb_samples ); } else { @@ -275,6 +337,7 @@ void aout_FifoSet( aout_instance_t * p_aout, aout_fifo_t * p_fifo, mtime_t date ) { aout_buffer_t * p_buffer; + (void)p_aout; aout_DateSet( &p_fifo->end_date, date ); p_buffer = p_fifo->p_first; @@ -295,6 +358,7 @@ void aout_FifoMoveDates( aout_instance_t * p_aout, aout_fifo_t * p_fifo, mtime_t difference ) { aout_buffer_t * p_buffer; + (void)p_aout; aout_DateMove( &p_fifo->end_date, difference ); p_buffer = p_fifo->p_first; @@ -311,6 +375,7 @@ void aout_FifoMoveDates( aout_instance_t * p_aout, aout_fifo_t * p_fifo, *****************************************************************************/ mtime_t aout_FifoNextStart( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) { + (void)p_aout; return aout_DateGet( &p_fifo->end_date ); } @@ -320,6 +385,7 @@ mtime_t aout_FifoNextStart( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) *****************************************************************************/ mtime_t aout_FifoFirstDate( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) { + (void)p_aout; return p_fifo->p_first ? p_fifo->p_first->start_date : 0; } @@ -329,6 +395,8 @@ mtime_t aout_FifoFirstDate( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) aout_buffer_t * aout_FifoPop( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) { aout_buffer_t * p_buffer; + (void)p_aout; + p_buffer = p_fifo->p_first; if ( p_buffer == NULL ) return NULL; p_fifo->p_first = p_buffer->p_next; @@ -346,6 +414,7 @@ aout_buffer_t * aout_FifoPop( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) { aout_buffer_t * p_buffer; + (void)p_aout; p_buffer = p_fifo->p_first; while ( p_buffer != NULL ) @@ -354,6 +423,9 @@ void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) aout_BufferFree( p_buffer ); p_buffer = p_next; } + + p_fifo->p_first = NULL; + p_fifo->pp_last = &p_fifo->p_first; } @@ -364,7 +436,7 @@ void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo ) /***************************************************************************** * aout_DateInit : set the divider of an audio_date_t *****************************************************************************/ -void aout_DateInit( audio_date_t * p_date, u32 i_divider ) +void aout_DateInit( audio_date_t * p_date, uint32_t i_divider ) { p_date->date = 0; p_date->i_divider = i_divider; @@ -400,7 +472,7 @@ mtime_t aout_DateGet( const audio_date_t * p_date ) * aout_DateIncrement : increment the date and return the result, taking * into account rounding errors *****************************************************************************/ -mtime_t aout_DateIncrement( audio_date_t * p_date, u32 i_nb_samples ) +mtime_t aout_DateIncrement( audio_date_t * p_date, uint32_t i_nb_samples ) { mtime_t i_dividend = (mtime_t)i_nb_samples * 1000000; p_date->date += i_dividend / p_date->i_divider; @@ -414,3 +486,105 @@ mtime_t aout_DateIncrement( audio_date_t * p_date, u32 i_nb_samples ) return p_date->date; } +/***************************************************************************** + * aout_CheckChannelReorder : Check if we need to do some channel re-ordering + *****************************************************************************/ +int aout_CheckChannelReorder( const uint32_t *pi_chan_order_in, + const uint32_t *pi_chan_order_out, + uint32_t i_channel_mask, + int i_channels, int *pi_chan_table ) +{ + bool b_chan_reorder = false; + int i, j, k, l; + + if( i_channels > AOUT_CHAN_MAX ) return false; + + for( i = 0, j = 0; pi_chan_order_in[i]; i++ ) + { + if( !(i_channel_mask & pi_chan_order_in[i]) ) continue; + + for( k = 0, l = 0; pi_chan_order_in[i] != pi_chan_order_out[k]; k++ ) + { + if( i_channel_mask & pi_chan_order_out[k] ) l++; + } + + pi_chan_table[j++] = l; + } + + for( i = 0; i < i_channels; i++ ) + { + if( pi_chan_table[i] != i ) b_chan_reorder = true; + } + + return b_chan_reorder; +} + +/***************************************************************************** + * aout_ChannelReorder : + *****************************************************************************/ +void aout_ChannelReorder( uint8_t *p_buf, int i_buffer, + int i_channels, const int *pi_chan_table, + int i_bits_per_sample ) +{ + uint8_t p_tmp[AOUT_CHAN_MAX * 4]; + int i, j; + + if( i_bits_per_sample == 8 ) + { + for( i = 0; i < i_buffer / i_channels; i++ ) + { + for( j = 0; j < i_channels; j++ ) + { + p_tmp[pi_chan_table[j]] = p_buf[j]; + } + + memcpy( p_buf, p_tmp, i_channels ); + p_buf += i_channels; + } + } + else if( i_bits_per_sample == 16 ) + { + for( i = 0; i < i_buffer / i_channels / 2; i++ ) + { + for( j = 0; j < i_channels; j++ ) + { + p_tmp[2 * pi_chan_table[j]] = p_buf[2 * j]; + p_tmp[2 * pi_chan_table[j] + 1] = p_buf[2 * j + 1]; + } + + memcpy( p_buf, p_tmp, 2 * i_channels ); + p_buf += 2 * i_channels; + } + } + else if( i_bits_per_sample == 24 ) + { + for( i = 0; i < i_buffer / i_channels / 3; i++ ) + { + for( j = 0; j < i_channels; j++ ) + { + p_tmp[3 * pi_chan_table[j]] = p_buf[3 * j]; + p_tmp[3 * pi_chan_table[j] + 1] = p_buf[3 * j + 1]; + p_tmp[3 * pi_chan_table[j] + 2] = p_buf[3 * j + 2]; + } + + memcpy( p_buf, p_tmp, 3 * i_channels ); + p_buf += 3 * i_channels; + } + } + else if( i_bits_per_sample == 32 ) + { + for( i = 0; i < i_buffer / i_channels / 4; i++ ) + { + for( j = 0; j < i_channels; j++ ) + { + p_tmp[4 * pi_chan_table[j]] = p_buf[4 * j]; + p_tmp[4 * pi_chan_table[j] + 1] = p_buf[4 * j + 1]; + p_tmp[4 * pi_chan_table[j] + 2] = p_buf[4 * j + 2]; + p_tmp[4 * pi_chan_table[j] + 3] = p_buf[4 * j + 3]; + } + + memcpy( p_buf, p_tmp, 4 * i_channels ); + p_buf += 4 * i_channels; + } + } +}