audio_mixer.c File Reference

#include <gpac/internal/compositor_dev.h>

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Data Structures
struct	MixerInput
struct	GF_AudioMixer

Macros
#define	swap_16(x)   (( (x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))
#define	swap_32(x)   (swap_16(x) << 16 | swap_16((x) >> 16))
#define	swap_64(x)   ( swap_32(x) << 32 | swap_32((x) >> 32))
#define	GF_S24_MAX   8388607
#define	GF_S24_MIN   -8388608
#define	MIX_S16_SCALE   65535
#define	MIX_S24_SCALE   255
#define	MIX_U8_SCALE   16777215
#define	TRUNC_FLT_DBL(_a)
#define	RESAMPLE_SCALER   1000

Functions
GF_EXPORT GF_AudioMixer *	gf_mixer_new (struct _audio_render *ar)
Bool	gf_mixer_must_reconfig (GF_AudioMixer *am)
void	gf_mixer_set_max_speed (GF_AudioMixer *am, Double max_speed)
GF_EXPORT void	gf_mixer_del (GF_AudioMixer *am)
void	gf_mixer_remove_all (GF_AudioMixer *am)
Bool	gf_mixer_is_src_present (GF_AudioMixer *am, GF_AudioInterface *ifce)
u32	gf_mixer_get_src_count (GF_AudioMixer *am)
GF_Err	gf_mixer_force_channel_out (GF_AudioMixer *am, u32 num_channels)
u32	gf_mixer_get_block_align (GF_AudioMixer *am)
GF_EXPORT void	gf_mixer_lock (GF_AudioMixer *am, Bool lockIt)
GF_EXPORT Bool	gf_mixer_empty (GF_AudioMixer *am)
GF_EXPORT Bool	gf_mixer_buffering (GF_AudioMixer *am)
GF_EXPORT Bool	gf_mixer_is_eos (GF_AudioMixer *am)
GF_EXPORT void	gf_mixer_add_input (GF_AudioMixer *am, GF_AudioInterface *src)
void	gf_mixer_remove_input (GF_AudioMixer *am, GF_AudioInterface *src)
static GF_Err	get_best_samplerate (GF_AudioMixer *am, u32 *out_sr, u32 *out_ch, u32 *out_fmt)
GF_EXPORT void	gf_mixer_get_config (GF_AudioMixer *am, u32 *outSR, u32 *outCH, u32 *outFMT, u64 *outChCfg)
GF_EXPORT GF_Err	gf_mixer_set_config (GF_AudioMixer *am, u32 outSR, u32 outCH, u32 outFMT, u64 outChCfg)
static GFINLINE s32	make_s24_int (u8 *ptr)
static GFINLINE s32	make_s24_be_int (u8 *ptr)
s32	input_sample_s32 (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s32p (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s32_be (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s24 (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s24p (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s24_be (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_flt (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_fltp (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_flt_be (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_dbl (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_dblp (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_dbl_be (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s16 (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s16_be (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_s16p (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_u8 (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_u8p (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
s32	input_sample_null (u8 *data, u32 nb_ch, u32 sample_offset, u32 channel, u32 planar_stride)
static void	gf_am_configure_source (MixerInput *in)
GF_EXPORT Bool	gf_mixer_reconfig (GF_AudioMixer *am)
static GFINLINE u32	get_channel_out_pos (u32 in_ch, u64 out_ch_layout)
static GFINLINE void	gf_mixer_map_channels (s32 *inChan, u32 nb_in, u64 in_ch_layout, Bool forced_layout, u32 nb_out, u64 out_ch_layout)
static void	gf_mixer_fetch_input (GF_AudioMixer *am, MixerInput *in, u32 audio_delay)
GF_EXPORT u32	gf_mixer_get_output (GF_AudioMixer *am, void *buffer, u32 buffer_size, u32 delay)

---

Data Structure Documentation

__audiomix

struct __audiomix

Data Fields
GF_List *	sources
u32	sample_rate
u32	nb_channels
u32	afmt
u32	bit_depth
u64	channel_layout
GF_Mutex *	mx
Bool	force_channel_out
Bool	must_reconfig
Bool	isEmpty
Bool	source_buffering
u32	nb_eos
struct _audio_render *	ar
Fixed	max_speed
s32 *	output
u32	output_size

Macro Definition Documentation

swap_16

#define swap_16

(

x

)

(( (x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))

swap_32

#define swap_32

(

x

)

(swap_16(x) << 16 | swap_16((x) >> 16))

swap_64

#define swap_64

(

x

)

( swap_32(x) << 32 | swap_32((x) >> 32))

GF_S24_MAX

#define GF_S24_MAX   8388607

GF_S24_MIN

#define GF_S24_MIN   -8388608

MIX_S16_SCALE

#define MIX_S16_SCALE   65535

MIX_S24_SCALE

#define MIX_S24_SCALE   255

MIX_U8_SCALE

#define MIX_U8_SCALE   16777215

TRUNC_FLT_DBL

#define TRUNC_FLT_DBL

(

_a

)

Value:

        if (_a<-1.0) return GF_INT_MIN;\
        else if (_a>1.0) return GF_INT_MAX;\
        return (s32) (_a * GF_INT_MAX);\

RESAMPLE_SCALER

#define RESAMPLE_SCALER   1000

Function Documentation

gf_mixer_new()

GF_EXPORT GF_AudioMixer* gf_mixer_new

(

struct _audio_render *

ar

)

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gf_mixer_must_reconfig()

Bool gf_mixer_must_reconfig

(

GF_AudioMixer *

am

)

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gf_mixer_set_max_speed()

void gf_mixer_set_max_speed	(	GF_AudioMixer *	am,
		Double	max_speed
	)

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gf_mixer_del()

GF_EXPORT void gf_mixer_del

(

GF_AudioMixer *

am

)

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gf_mixer_remove_all()

void gf_mixer_remove_all

(

GF_AudioMixer *

am

)

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gf_mixer_is_src_present()

Bool gf_mixer_is_src_present	(	GF_AudioMixer *	am,
		GF_AudioInterface *	ifce
	)

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gf_mixer_get_src_count()

u32 gf_mixer_get_src_count

(

GF_AudioMixer *

am

)

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gf_mixer_force_channel_out()

GF_Err gf_mixer_force_channel_out	(	GF_AudioMixer *	am,
		u32	num_channels
	)

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gf_mixer_get_block_align()

u32 gf_mixer_get_block_align

(

GF_AudioMixer *

am

)

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gf_mixer_lock()

GF_EXPORT void gf_mixer_lock	(	GF_AudioMixer *	am,
		Bool	lockIt
	)

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gf_mixer_empty()

GF_EXPORT Bool gf_mixer_empty

(

GF_AudioMixer *

am

)

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gf_mixer_buffering()

GF_EXPORT Bool gf_mixer_buffering

(

GF_AudioMixer *

am

)

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gf_mixer_is_eos()

GF_EXPORT Bool gf_mixer_is_eos

(

GF_AudioMixer *

am

)

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gf_mixer_add_input()

GF_EXPORT void gf_mixer_add_input	(	GF_AudioMixer *	am,
		GF_AudioInterface *	src
	)

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gf_mixer_remove_input()

void gf_mixer_remove_input	(	GF_AudioMixer *	am,
		GF_AudioInterface *	src
	)

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get_best_samplerate()

static GF_Err get_best_samplerate ( GF_AudioMixer *  am, u32 *  out_sr, u32 *  out_ch, u32 *  out_fmt  )

static

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gf_mixer_get_config()

GF_EXPORT void gf_mixer_get_config	(	GF_AudioMixer *	am,
		u32 *	outSR,
		u32 *	outCH,
		u32 *	outFMT,
		u64 *	outChCfg
	)

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gf_mixer_set_config()

GF_EXPORT GF_Err gf_mixer_set_config	(	GF_AudioMixer *	am,
		u32	outSR,
		u32	outCH,
		u32	outFMT,
		u64	outChCfg
	)

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make_s24_int()

static GFINLINE s32 make_s24_int ( u8 *  ptr )

static

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make_s24_be_int()

static GFINLINE s32 make_s24_be_int ( u8 *  ptr )

static

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input_sample_s32()

s32 input_sample_s32	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s32p()

s32 input_sample_s32p	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s32_be()

s32 input_sample_s32_be	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s24()

s32 input_sample_s24	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s24p()

s32 input_sample_s24p	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s24_be()

s32 input_sample_s24_be	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_flt()

s32 input_sample_flt	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_fltp()

s32 input_sample_fltp	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_flt_be()

s32 input_sample_flt_be	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_dbl()

s32 input_sample_dbl	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_dblp()

s32 input_sample_dblp	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_dbl_be()

s32 input_sample_dbl_be	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s16()

s32 input_sample_s16	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s16_be()

s32 input_sample_s16_be	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_s16p()

s32 input_sample_s16p	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_u8()

s32 input_sample_u8	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_u8p()

s32 input_sample_u8p	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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input_sample_null()

s32 input_sample_null	(	u8 *	data,
		u32	nb_ch,
		u32	sample_offset,
		u32	channel,
		u32	planar_stride
	)

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gf_am_configure_source()

static void gf_am_configure_source ( MixerInput *  in )

static

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gf_mixer_reconfig()

GF_EXPORT Bool gf_mixer_reconfig

(

GF_AudioMixer *

am

)

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get_channel_out_pos()

static GFINLINE u32 get_channel_out_pos ( u32  in_ch, u64  out_ch_layout  )

static

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gf_mixer_map_channels()

static GFINLINE void gf_mixer_map_channels ( s32 *  inChan, u32  nb_in, u64  in_ch_layout, Bool  forced_layout, u32  nb_out, u64  out_ch_layout  )

static

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gf_mixer_fetch_input()

static void gf_mixer_fetch_input ( GF_AudioMixer *  am, MixerInput *  in, u32  audio_delay  )

static

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gf_mixer_get_output()

GF_EXPORT u32 gf_mixer_get_output	(	GF_AudioMixer *	am,
		void *	buffer,
		u32	buffer_size,
		u32	delay
	)

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