X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=include%2Faudio_output.h;h=677c570b92783ec6d4436ecd5f8c25aace89aa54;hb=bade4231dc9070240e7ccf6693c2388c7f20114d;hp=5ec00f15d2e51630fd410167af558b4205533f51;hpb=96f414c1f0da6bdbf8089bf26fe7dfe79065e4ca;p=vlc diff --git a/include/audio_output.h b/include/audio_output.h index 5ec00f15d2..677c570b92 100644 --- a/include/audio_output.h +++ b/include/audio_output.h @@ -1,206 +1,201 @@ -/****************************************************************************** - * audio_output.h : audio output thread interface - * (c)1999 VideoLAN - ****************************************************************************** - * Required headers: - * - ( pthread_t ) - * - ( audio_buf_info ) - * - "common.h" ( boolean_t ) - * - "mtime.h" ( mtime_t ) - ******************************************************************************/ - -/* TODO : +/***************************************************************************** + * audio_output.h : audio output interface + ***************************************************************************** + * Copyright (C) 2002-2005 the VideoLAN team + * $Id$ * - * - Créer un flag destroy dans les fifos audio pour indiquer au thread audio - * qu'il peut libérer la mémoire occupée par le buffer de la fifo lorsqu'il - * le désire (fin du son ou fin du thread) - * - Redéplacer les #define dans config.h + * Authors: Christophe Massiot * - */ - + * This program is free software; you can redistribute it and/or modify + * 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 + * GNU General Public License for more details. + * + * 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. + *****************************************************************************/ +#ifndef _VLC_AUDIO_OUTPUT_H +#define _VLC_AUDIO_OUTPUT_H 1 + +#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_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 VLC_FOURCC('s','1','6','b') +# define AOUT_FMT_U16_NE VLC_FOURCC('u','1','6','b') +# define AOUT_FMT_S24_NE VLC_FOURCC('s','2','4','b') +#else +# define AOUT_FMT_S16_NE VLC_FOURCC('s','1','6','l') +# define AOUT_FMT_U16_NE VLC_FOURCC('u','1','6','l') +# define AOUT_FMT_S24_NE VLC_FOURCC('s','2','4','l') +#endif + +#define AOUT_FMT_NON_LINEAR( p_format ) \ + ( ((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 */ /* - * Defines => "config.h" + * Fixed-point format: 0xABBBBBBB + * A == whole part (sign + 3 bits) + * B == fractional part (28 bits) + * + * Values are signed two's complement, so the effective range is: + * 0x80000000 to 0x7fffffff + * -8.0 to +7.9999999962747097015380859375 + * + * The smallest representable value is: + * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9) + * + * 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 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) -/* Default output device. You probably should not change this. */ -#define AOUT_DEFAULT_DEVICE "/dev/dsp" - -/* Default audio output format (AFMT_S16_NE = Native Endianess) */ -#define AOUT_DEFAULT_FORMAT AFMT_S16_NE - -/* Default stereo mode (0 stands for mono, 1 for stereo) */ -#define AOUT_DEFAULT_STEREO 1 - -/* Audio output rate, in Hz */ -#define AOUT_MIN_RATE 22050 /* ?? */ -#define AOUT_DEFAULT_RATE 44100 -#define AOUT_MAX_RATE 48000 - -/* Number of audio samples (s16 integers) contained in an audio output frame... - * - Layer I : a decoded frame contains 384 samples - * - Layer II & III : a decoded frame contains 1152 = 3*384 samples */ -#define AOUT_FRAME_SIZE 384 - -/* Number of audio output frames contained in an audio output fifo. - * (AOUT_FIFO_SIZE + 1) must be a power of 2, in order to optimise the - * %(AOUT_FIFO_SIZE + 1) operation with an &AOUT_FIFO_SIZE. - * With 511 we have at least 511*384/2/48000=2 seconds of sound */ -#define AOUT_FIFO_SIZE 511 - -/* Maximum number of audio fifos. The value of AOUT_MAX_FIFOS should be a power - * of two, in order to optimize the '/AOUT_MAX_FIFOS' and '*AOUT_MAX_FIFOS' - * operations with '>>' and '<<' (gcc changes this at compilation-time) */ -#define AOUT_MAX_FIFOS 4 - -/* Duration (in microseconds) of an audio output buffer should be : - * - short, in order to be able to play a new song very quickly (especially a - * song from the interface) - * - long, in order to perform the buffer calculations as few as possible */ -#define AOUT_BUFFER_DURATION 100000 /* - * Macros + * Channels descriptions */ -#define AOUT_FIFO_ISEMPTY( fifo ) ( (fifo).l_end_frame == (fifo).i_start_frame ) -#define AOUT_FIFO_ISFULL( fifo ) ( ((((fifo).l_end_frame + 1) - (fifo).l_start_frame) & AOUT_FIFO_SIZE) == 0 ) -/****************************************************************************** - * aout_dsp_t - ******************************************************************************/ -typedef struct +/* 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 +#define AOUT_CHAN_MAX 9 + +/* 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 + *****************************************************************************/ +struct aout_buffer_t { - /* Path to the audio output device (default is set to "/dev/dsp") */ - char * psz_device; - int i_fd; - - /* Format of the audio output samples (see ) */ - int i_format; - /* Following boolean is set to 0 if output sound is mono, 1 if stereo */ - boolean_t b_stereo; - /* Rate of the audio output sound (in Hz) */ - long l_rate; - - /* Buffer information structure, used by aout_dspGetBufInfo() to store the - * current state of the internal sound card buffer */ - audio_buf_info buf_info; - -} aout_dsp_t; - -/****************************************************************************** - * aout_increment_t - ****************************************************************************** - * This structure is used to keep the progression of an index up-to-date, in - * order to avoid rounding problems and heavy computations, as the function - * that handles this structure only uses additions. - ******************************************************************************/ -typedef struct + byte_t * p_buffer; + int i_alloc_type; + /* 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; + unsigned int i_nb_samples; + mtime_t start_date, end_date; + + struct aout_buffer_t * p_next; + + /** Private data (aout_buffer_t will disappear soon so no need for an + * aout_buffer_sys_t type) */ + void * p_sys; + + /** This way the release can be overloaded */ + void (*pf_release)( 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 { - /* The remainder is used to keep track of the fractional part of the - * index. */ - long l_remainder; - - /* - * The increment structure is initialized with the result of an euclidean - * division : - * - * l_euclidean_numerator l_euclidean_remainder - * ----------------------- = l_euclidean_integer + ----------------------- - * l_euclidean_denominator l_euclidean_denominator - * - */ - long l_euclidean_integer; - long l_euclidean_remainder; - long l_euclidean_denominator; - -} aout_increment_t; - -/****************************************************************************** - * aout_frame_t - ******************************************************************************/ -typedef s16 aout_frame_t[ AOUT_FRAME_SIZE ]; - -/****************************************************************************** - * aout_fifo_t - ******************************************************************************/ -typedef struct -{ - /* See the fifo types below */ - int i_type; - boolean_t b_die; - - boolean_t b_stereo; - long l_rate; - - pthread_mutex_t data_lock; - pthread_cond_t data_wait; - - void * buffer; - mtime_t * date; - /* The start frame is the first frame in the buffer that contains decoded - * audio data. It it also the first frame in the current timestamped frame - * area, ie the first dated frame in the decoded part of the buffer. :-p */ - long l_start_frame; - boolean_t b_start_frame; - /* The next frame is the end frame of the current timestamped frame area, - * ie the first dated frame after the start frame. */ - long l_next_frame; - boolean_t b_next_frame; - /* The end frame is the first frame, after the start frame, that doesn't - * contain decoded audio data. That's why the end frame is the first frame - * where the audio decoder can store its decoded audio frames. */ - long l_end_frame; - - long l_unit; - aout_increment_t unit_increment; - /* The following variable is used to store the number of remaining audio - * units in the current timestamped frame area. */ - long l_units; - -} aout_fifo_t; - -#define AOUT_EMPTY_FIFO 0 -#define AOUT_INTF_MONO_FIFO 1 -#define AOUT_INTF_STEREO_FIFO 2 -#define AOUT_ADEC_MONO_FIFO 3 -#define AOUT_ADEC_STEREO_FIFO 4 - -/****************************************************************************** - * aout_thread_t - ******************************************************************************/ -typedef struct aout_thread_s -{ - pthread_t thread_id; - boolean_t b_die; - - aout_dsp_t dsp; - - pthread_mutex_t fifos_lock; - aout_fifo_t fifo[ AOUT_MAX_FIFOS ]; - - void * buffer; - /* The s32 buffer is used to mix all the audio fifos together before - * converting them and storing them in the audio output buffer */ - s32 * s32_buffer; - - /* The size of the audio output buffer is kept in audio units, as this is - * the only unit that is common with every audio decoder and audio fifo */ - long l_units; - - mtime_t date; - /* date is the moment where the first audio unit of the output buffer - * should be played and is kept up-to-date with the following incremental - * structure */ - aout_increment_t date_increment; - -} aout_thread_t; + mtime_t date; + uint32_t i_divider; + uint32_t i_remainder; +}; -/****************************************************************************** +/***************************************************************************** * Prototypes - ******************************************************************************/ -int aout_Open ( aout_thread_t *p_aout ); -int aout_SpawnThread ( aout_thread_t *p_aout ); -void aout_CancelThread ( aout_thread_t *p_aout ); -void aout_Close ( aout_thread_t *p_aout ); - -aout_fifo_t * aout_CreateFifo ( aout_thread_t *p_aout, aout_fifo_t *p_fifo ); -void aout_DestroyFifo ( aout_fifo_t *p_fifo ); + *****************************************************************************/ +/* 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 ) ); + +VLC_EXPORT( int, aout_CheckChannelReorder, ( const uint32_t *, const uint32_t *, uint32_t, int, int * ) ); +VLC_EXPORT( void, aout_ChannelReorder, ( uint8_t *, int, int, const int *, int ) ); + +/* 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 */