audio_mixer.c File Reference

#include <gpac/internal/compositor_dev.h>

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Data Structures
struct	MixerInput
struct	GF_AudioMixer

Macros
#define	GF_SR_MAX_CHANNELS   16

Functions
GF_AudioMixer *	gf_mixer_new (struct _audio_render *ar)
Bool	gf_mixer_must_reconfig (GF_AudioMixer *am)
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)
void	gf_mixer_force_chanel_out (GF_AudioMixer *am, u32 num_channels)
u32	gf_mixer_get_block_align (GF_AudioMixer *am)
void	gf_mixer_lock (GF_AudioMixer *am, Bool lockIt)
Bool	gf_mixer_empty (GF_AudioMixer *am)
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_bps)
void	gf_mixer_get_config (GF_AudioMixer *am, u32 *outSR, u32 *outCH, u32 *outBPS, u32 *outChCfg)
void	gf_mixer_set_config (GF_AudioMixer *am, u32 outSR, u32 outCH, u32 outBPS, u32 outChCfg)
Bool	gf_mixer_reconfig (GF_AudioMixer *am)
static u32	get_channel_out_pos (u32 in_ch, u32 out_cfg)
static void	gf_mixer_map_channels (s32 *inChan, u32 nb_in, u32 in_cfg, u32 nb_out, u32 out_cfg)
static void	gf_mixer_fetch_input (GF_AudioMixer *am, MixerInput *in, u32 audio_delay)
u32	gf_mixer_get_output (GF_AudioMixer *am, void *buffer, u32 buffer_size, u32 delay)

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Data Structure Documentation

struct MixerInput

Collaboration diagram for MixerInput:

Data Fields
GF_AudioInterface *	src
s32 *	ch_buf[16]
u32	buffer_size
u32	bytes_per_sec
Bool	has_prev
s32	last_channels[16]
u32	in_bytes_used
u32	out_samples_written
u32	out_samples_to_write
Fixed	speed
Fixed	pan[6]
Bool	muted

struct __audiomix

Collaboration diagram for GF_AudioMixer:

Data Fields
GF_List *	sources
u32	sample_rate
u32	nb_channels
u32	bits_per_sample
u32	channel_cfg
GF_Mutex *	mx
Bool	force_channel_out
Bool	must_reconfig
Bool	isEmpty
struct _audio_render *	ar
s32 *	output
u32	output_size

Macro Definition Documentation

#define GF_SR_MAX_CHANNELS   16

Function Documentation

GF_AudioMixer* gf_mixer_new

(

struct _audio_render *

ar

)

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Bool gf_mixer_must_reconfig

(

GF_AudioMixer *

am

)

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void gf_mixer_del

(

GF_AudioMixer *

am

)

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void gf_mixer_remove_all

(

GF_AudioMixer *

am

)

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Bool gf_mixer_is_src_present	(	GF_AudioMixer *	am,
		GF_AudioInterface *	ifce
	)

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u32 gf_mixer_get_src_count

(

GF_AudioMixer *

am

)

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void gf_mixer_force_chanel_out	(	GF_AudioMixer *	am,
		u32	num_channels
	)

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u32 gf_mixer_get_block_align

(

GF_AudioMixer *

am

)

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void gf_mixer_lock	(	GF_AudioMixer *	am,
		Bool	lockIt
	)

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Bool gf_mixer_empty

(

GF_AudioMixer *

am

)

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void gf_mixer_add_input	(	GF_AudioMixer *	am,
		GF_AudioInterface *	src
	)

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void gf_mixer_remove_input	(	GF_AudioMixer *	am,
		GF_AudioInterface *	src
	)

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

static

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void gf_mixer_get_config	(	GF_AudioMixer *	am,
		u32 *	outSR,
		u32 *	outCH,
		u32 *	outBPS,
		u32 *	outChCfg
	)

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void gf_mixer_set_config	(	GF_AudioMixer *	am,
		u32	outSR,
		u32	outCH,
		u32	outBPS,
		u32	outChCfg
	)

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Bool gf_mixer_reconfig

(

GF_AudioMixer *

am

)

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static u32 get_channel_out_pos ( u32  in_ch, u32  out_cfg  )

static

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static void gf_mixer_map_channels ( s32 *  inChan, u32  nb_in, u32  in_cfg, u32  nb_out, u32  out_cfg  )

static

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

static

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

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