X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=include%2Faudio_output.h;h=8464511d646f8c7075c417178bb2d60e0dcbbc3f;hb=b2c5adbc52bb9992c99df24ac58bf13a01d33a22;hp=addf857056a2b3d04d5b81a4e61562ecb695b3d9;hpb=eb93d56d8d76be74193a77ee163462c14af92959;p=vlc diff --git a/include/audio_output.h b/include/audio_output.h index addf857056..8464511d64 100644 --- a/include/audio_output.h +++ b/include/audio_output.h @@ -2,7 +2,7 @@ * audio_output.h : audio output interface ***************************************************************************** * Copyright (C) 2002 VideoLAN - * $Id: audio_output.h,v 1.58 2002/08/14 00:23:59 massiot Exp $ + * $Id: audio_output.h,v 1.86 2003/11/20 22:10:55 fenrir Exp $ * * 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 @@ -20,60 +20,41 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. *****************************************************************************/ +#ifndef _VLC_AUDIO_OUTPUT_H +#define _VLC_AUDIO_OUTPUT_H 1 -/***************************************************************************** - * audio_sample_format_t - ***************************************************************************** - * This structure defines a format for audio samples. - *****************************************************************************/ -struct audio_sample_format_t -{ - int i_format; - int i_rate; - int i_channels; - /* Optional - for A52, SPDIF and DTS types */ - int i_bytes_per_sec; -}; - -#define AOUT_FMT_MU_LAW 0x00000001 -#define AOUT_FMT_A_LAW 0x00000002 -#define AOUT_FMT_IMA_ADPCM 0x00000004 -#define AOUT_FMT_U8 0x00000008 -#define AOUT_FMT_S16_LE 0x00000010 /* Little endian signed 16 */ -#define AOUT_FMT_S16_BE 0x00000020 /* Big endian signed 16 */ -#define AOUT_FMT_S8 0x00000040 -#define AOUT_FMT_U16_LE 0x00000080 /* Little endian U16 */ -#define AOUT_FMT_U16_BE 0x00000100 /* Big endian U16 */ -#define AOUT_FMT_SPDIF 0x00000400 /* S/PDIF hardware support */ -#define AOUT_FMT_FLOAT32 0x00010000 -#define AOUT_FMT_FIXED32 0x00020000 -#define AOUT_FMT_A52 0x00100000 -#define AOUT_FMT_DTS 0x00200000 +#include "vlc_es.h" #define AOUT_FMTS_IDENTICAL( p_first, p_second ) ( \ ((p_first)->i_format == (p_second)->i_format) \ && ((p_first)->i_rate == (p_second)->i_rate) \ - && ((p_first)->i_channels == (p_second)->i_channels \ - || (p_first)->i_channels == -1 || (p_second)->i_channels == -1) ) + && ((p_first)->i_physical_channels == (p_second)->i_physical_channels)\ + && ((p_first)->i_original_channels == (p_second)->i_original_channels) ) + +/* Check if i_rate == i_rate and i_channels == i_channels */ +#define AOUT_FMTS_SIMILAR( p_first, p_second ) ( \ + ((p_first)->i_rate == (p_second)->i_rate) \ + && ((p_first)->i_physical_channels == (p_second)->i_physical_channels)\ + && ((p_first)->i_original_channels == (p_second)->i_original_channels) ) #ifdef WORDS_BIGENDIAN -# define AOUT_FMT_S16_NE AOUT_FMT_S16_BE -# define AOUT_FMT_U16_NE AOUT_FMT_U16_BE +# define AOUT_FMT_S16_NE VLC_FOURCC('s','1','6','b') +# define AOUT_FMT_U16_NE VLC_FOURCC('u','1','6','b') #else -# define AOUT_FMT_S16_NE AOUT_FMT_S16_LE -# define AOUT_FMT_U16_NE AOUT_FMT_U16_LE +# define AOUT_FMT_S16_NE VLC_FOURCC('s','1','6','l') +# define AOUT_FMT_U16_NE VLC_FOURCC('u','1','6','l') #endif #define AOUT_FMT_NON_LINEAR( p_format ) \ - ( ((p_format)->i_format == AOUT_FMT_SPDIF) \ - || ((p_format)->i_format == AOUT_FMT_A52) \ - || ((p_format)->i_format == AOUT_FMT_DTS) ) + ( ((p_format)->i_format == VLC_FOURCC('s','p','d','i')) \ + || ((p_format)->i_format == VLC_FOURCC('a','5','2',' ')) \ + || ((p_format)->i_format == VLC_FOURCC('d','t','s',' ')) ) /* This is heavily borrowed from libmad, by Robert Leslie */ /* * Fixed-point format: 0xABBBBBBB * A == whole part (sign + 3 bits) - * B == fractional part (28 bits) + * B == fractional part (28 bits) * * Values are signed two's complement, so the effective range is: * 0x80000000 to 0x7fffffff @@ -84,18 +65,56 @@ struct audio_sample_format_t * * 28 bits of fractional accuracy represent about * 8.6 digits of decimal accuracy. - * + * * Fixed-point numbers can be added or subtracted as normal * integers, but multiplication requires shifting the 64-bit result * from 56 fractional bits back to 28 (and rounding.) */ -typedef s32 vlc_fixed_t; +typedef int32_t vlc_fixed_t; #define FIXED32_FRACBITS 28 #define FIXED32_MIN ((vlc_fixed_t) -0x80000000L) #define FIXED32_MAX ((vlc_fixed_t) +0x7fffffffL) #define FIXED32_ONE ((vlc_fixed_t) 0x10000000) +/* + * Channels descriptions + */ + +/* Values available for physical and original channels */ +#define AOUT_CHAN_CENTER 0x1 +#define AOUT_CHAN_LEFT 0x2 +#define AOUT_CHAN_RIGHT 0x4 +#define AOUT_CHAN_REARCENTER 0x10 +#define AOUT_CHAN_REARLEFT 0x20 +#define AOUT_CHAN_REARRIGHT 0x40 +#define AOUT_CHAN_MIDDLELEFT 0x100 +#define AOUT_CHAN_MIDDLERIGHT 0x200 +#define AOUT_CHAN_LFE 0x1000 + +/* Values available for original channels only */ +#define AOUT_CHAN_DOLBYSTEREO 0x10000 +#define AOUT_CHAN_DUALMONO 0x20000 +#define AOUT_CHAN_REVERSESTEREO 0x40000 + +#define AOUT_CHAN_PHYSMASK 0xFFFF + +/* Values used for the audio-device and audio-channels object variables */ +#define AOUT_VAR_MONO 1 +#define AOUT_VAR_STEREO 2 +#define AOUT_VAR_2F2R 4 +#define AOUT_VAR_3F2R 5 +#define AOUT_VAR_5_1 6 +#define AOUT_VAR_6_1 7 +#define AOUT_VAR_7_1 8 +#define AOUT_VAR_SPDIF 10 + +#define AOUT_VAR_CHAN_STEREO 1 +#define AOUT_VAR_CHAN_RSTEREO 2 +#define AOUT_VAR_CHAN_LEFT 3 +#define AOUT_VAR_CHAN_RIGHT 4 +#define AOUT_VAR_CHAN_DOLBYS 5 + /***************************************************************************** * aout_buffer_t : audio output buffer *****************************************************************************/ @@ -103,10 +122,10 @@ struct aout_buffer_t { byte_t * p_buffer; int i_alloc_type; - /* i_size is the real size of the buffer (normally unused), i_nb_bytes + /* i_size is the real size of the buffer (used for debug ONLY), i_nb_bytes * is the number of significative bytes in it. */ size_t i_size, i_nb_bytes; - int i_nb_samples; + unsigned int i_nb_samples; mtime_t start_date, end_date; struct aout_buffer_t * p_next; @@ -115,23 +134,55 @@ struct aout_buffer_t /* Size of a frame for S/PDIF output. */ #define AOUT_SPDIF_SIZE 6144 +/* Number of samples in an A/52 frame. */ +#define A52_FRAME_NB 1536 + +/***************************************************************************** + * audio_date_t : date incrementation without long-term rounding errors + *****************************************************************************/ +struct audio_date_t +{ + mtime_t date; + uint32_t i_divider; + uint32_t i_remainder; +}; + /***************************************************************************** * Prototypes *****************************************************************************/ -/* From audio_output.c : */ -#define aout_NewInstance(a) __aout_NewInstance(VLC_OBJECT(a)) -VLC_EXPORT( aout_instance_t *, __aout_NewInstance, ( vlc_object_t * ) ); -VLC_EXPORT( void, aout_DeleteInstance, ( aout_instance_t * ) ); -VLC_EXPORT( aout_buffer_t *, aout_BufferNew, ( aout_instance_t *, aout_input_t *, size_t ) ); -VLC_EXPORT( void, aout_BufferDelete, ( aout_instance_t *, aout_input_t *, aout_buffer_t * ) ); -VLC_EXPORT( void, aout_BufferPlay, ( aout_instance_t *, aout_input_t *, aout_buffer_t * ) ); -VLC_EXPORT( int, aout_FormatToByterate, ( audio_sample_format_t * p_format ) ); - -/* From input.c : */ -#define aout_InputNew(a,b,c) __aout_InputNew(VLC_OBJECT(a),b,c) -VLC_EXPORT( aout_input_t *, __aout_InputNew, ( vlc_object_t *, aout_instance_t **, audio_sample_format_t * ) ); -VLC_EXPORT( void, aout_InputDelete, ( aout_instance_t *, aout_input_t * ) ); - -/* From output.c : */ -VLC_EXPORT( aout_buffer_t *, aout_OutputNextBuffer, ( aout_instance_t *, mtime_t ) ); +/* From common.c : */ +#define aout_New(a) __aout_New(VLC_OBJECT(a)) +VLC_EXPORT( aout_instance_t *, __aout_New, ( vlc_object_t * ) ); +VLC_EXPORT( void, aout_Delete, ( aout_instance_t * ) ); +VLC_EXPORT( void, aout_DateInit, ( audio_date_t *, uint32_t ) ); +VLC_EXPORT( void, aout_DateSet, ( audio_date_t *, mtime_t ) ); +VLC_EXPORT( void, aout_DateMove, ( audio_date_t *, mtime_t ) ); +VLC_EXPORT( mtime_t, aout_DateGet, ( const audio_date_t * ) ); +VLC_EXPORT( mtime_t, aout_DateIncrement, ( audio_date_t *, uint32_t ) ); + +/* From dec.c : */ +#define aout_DecNew(a, b, c) __aout_DecNew(VLC_OBJECT(a), b, c) +VLC_EXPORT( aout_input_t *, __aout_DecNew, ( vlc_object_t *, aout_instance_t **, audio_sample_format_t * ) ); +VLC_EXPORT( int, aout_DecDelete, ( aout_instance_t *, aout_input_t * ) ); +VLC_EXPORT( aout_buffer_t *, aout_DecNewBuffer, ( aout_instance_t *, aout_input_t *, size_t ) ); +VLC_EXPORT( void, aout_DecDeleteBuffer, ( aout_instance_t *, aout_input_t *, aout_buffer_t * ) ); +VLC_EXPORT( int, aout_DecPlay, ( aout_instance_t *, aout_input_t *, aout_buffer_t * ) ); + +/* From intf.c : */ +#define aout_VolumeGet(a, b) __aout_VolumeGet(VLC_OBJECT(a), b) +VLC_EXPORT( int, __aout_VolumeGet, ( vlc_object_t *, audio_volume_t * ) ); +#define aout_VolumeSet(a, b) __aout_VolumeSet(VLC_OBJECT(a), b) +VLC_EXPORT( int, __aout_VolumeSet, ( vlc_object_t *, audio_volume_t ) ); +#define aout_VolumeInfos(a, b) __aout_VolumeInfos(VLC_OBJECT(a), b) +VLC_EXPORT( int, __aout_VolumeInfos, ( vlc_object_t *, audio_volume_t * ) ); +#define aout_VolumeUp(a, b, c) __aout_VolumeUp(VLC_OBJECT(a), b, c) +VLC_EXPORT( int, __aout_VolumeUp, ( vlc_object_t *, int, audio_volume_t * ) ); +#define aout_VolumeDown(a, b, c) __aout_VolumeDown(VLC_OBJECT(a), b, c) +VLC_EXPORT( int, __aout_VolumeDown, ( vlc_object_t *, int, audio_volume_t * ) ); +#define aout_VolumeMute(a, b) __aout_VolumeMute(VLC_OBJECT(a), b) +VLC_EXPORT( int, __aout_VolumeMute, ( vlc_object_t *, audio_volume_t * ) ); +VLC_EXPORT( int, aout_Restart, ( aout_instance_t * p_aout ) ); +VLC_EXPORT( int, aout_FindAndRestart, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) ); +VLC_EXPORT( int, aout_ChannelsRestart, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) ); +#endif /* _VLC_AUDIO_OUTPUT_H */