resample_audio.c File Reference

#include <gpac/avparse.h>
#include <gpac/constants.h>
#include <gpac/filters.h>
#include <gpac/internal/compositor_dev.h>

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Data Structures
struct	GF_ResampleCtx

Macros
#define	OFFS(_n)   #_n, offsetof(GF_ResampleCtx, _n)

Functions
static u8 *	resample_fetch_frame (void *callback, u32 *size, u32 *planar_stride, u32 audio_delay_ms)
static void	resample_release_frame (void *callback, u32 nb_bytes)
static Bool	resample_get_config (struct _audiointerface *ai, Bool for_reconf)
static Bool	resample_is_muted (void *callback)
static Fixed	resample_get_speed (void *callback)
static Bool	resample_get_channel_volume (void *callback, Fixed *vol)
static GF_Err	resample_initialize (GF_Filter *filter)
static void	resample_finalize (GF_Filter *filter)
static GF_Err	resample_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static GF_Err	resample_process (GF_Filter *filter)
static GF_Err	resample_reconfigure_output (GF_Filter *filter, GF_FilterPid *pid)
static Bool	resample_process_event (GF_Filter *filter, const GF_FilterEvent *evt)
const GF_FilterRegister *	resample_register (GF_FilterSession *session)

Variables
static const GF_FilterCapability	ResamplerCaps []
static GF_FilterArgs	ResamplerArgs []
GF_FilterRegister	ResamplerRegister

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Data Structure Documentation

GF_ResampleCtx

struct GF_ResampleCtx

Collaboration diagram for GF_ResampleCtx:

Data Fields
u32	och
u32	osr
u32	osfmt
GF_FilterPid *	ipid
GF_FilterPid *	opid
GF_AudioMixer *	mixer
Bool	cfg_forced
u32	freq
u32	nb_ch
u32	afmt
u64	ch_cfg
u64	out_cts_plus_one
char *	olayout
Bool	src_is_planar
GF_AudioInterface	input_ai
Bool	passthrough
u32	timescale
const char *	data
u32	size
u32	bytes_consumed
Fixed	speed
GF_FilterPacket *	in_pck
Bool	cfg_changed

Macro Definition Documentation

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_ResampleCtx, _n)

Function Documentation

resample_fetch_frame()

static u8 * resample_fetch_frame ( void *  callback, u32 *  size, u32 *  planar_stride, u32  audio_delay_ms  )

static

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resample_release_frame()

static void resample_release_frame ( void *  callback, u32  nb_bytes  )

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resample_get_config()

static Bool resample_get_config ( struct _audiointerface *  ai, Bool  for_reconf  )

static

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resample_is_muted()

static Bool resample_is_muted ( void *  callback )

static

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resample_get_speed()

static Fixed resample_get_speed ( void *  callback )

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resample_get_channel_volume()

static Bool resample_get_channel_volume ( void *  callback, Fixed *  vol  )

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resample_initialize()

static GF_Err resample_initialize ( GF_Filter *  filter )

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resample_finalize()

static void resample_finalize ( GF_Filter *  filter )

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resample_configure_pid()

static GF_Err resample_configure_pid ( GF_Filter *  filter, GF_FilterPid *  pid, Bool  is_remove  )

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resample_process()

static GF_Err resample_process ( GF_Filter *  filter )

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resample_reconfigure_output()

static GF_Err resample_reconfigure_output ( GF_Filter *  filter, GF_FilterPid *  pid  )

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resample_process_event()

static Bool resample_process_event ( GF_Filter *  filter, const GF_FilterEvent *  evt  )

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resample_register()

const GF_FilterRegister * resample_register

(

GF_FilterSession *

session

)

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Variable Documentation

ResamplerCaps

const GF_FilterCapability ResamplerCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_STREAM_TYPE, GF_STREAM_AUDIO),
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_CODECID, GF_CODECID_RAW),
        CAP_UINT(GF_CAPS_OUTPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_AUDIO),
        CAP_UINT(GF_CAPS_OUTPUT, GF_PROP_PID_CODECID, GF_CODECID_RAW),
        {0},
        CAP_UINT(GF_CAPFLAG_RECONFIG, GF_PROP_PID_SAMPLE_RATE, 0),
        CAP_UINT(GF_CAPFLAG_RECONFIG, GF_PROP_PID_NUM_CHANNELS, 0),
        CAP_UINT(GF_CAPFLAG_RECONFIG, GF_PROP_PID_AUDIO_FORMAT, 0),
        CAP_LUINT(GF_CAPFLAG_RECONFIG, GF_PROP_PID_CHANNEL_LAYOUT, 0),
        CAP_DOUBLE(GF_CAPFLAG_RECONFIG, GF_PROP_PID_AUDIO_SPEED, 0),
}

ResamplerArgs

GF_FilterArgs ResamplerArgs[]

static

Initial value:

=
{
        { OFFS(och), "desired number of output audio channels (0 for auto)", GF_PROP_UINT, "0", NULL, 0},
        { OFFS(osr), "desired sample rate of output audio (0 for auto)", GF_PROP_UINT, "0", NULL, 0},
        { OFFS(osfmt), "desired sample format of output audio (`none` for auto)", GF_PROP_PCMFMT, "none", NULL, 0},
        { OFFS(olayout), "desired CICP layout of output audio (null for auto)", GF_PROP_CICP_LAYOUT, NULL, NULL, 0},
        {0}
}

ResamplerRegister

GF_FilterRegister ResamplerRegister

Initial value:

= {
        .name = "resample",
 
 
        .private_size = sizeof(GF_ResampleCtx),
        .initialize = resample_initialize,
        .finalize = resample_finalize,
        .args = ResamplerArgs,
        .flags = GF_FS_REG_ALLOW_CYCLIC,
        SETCAPS(ResamplerCaps),
        .configure_pid = resample_configure_pid,
        .process = resample_process,
        .reconfigure_output = resample_reconfigure_output,
        .process_event = resample_process_event,
        .hint_class_type = GF_FS_CLASS_AV
}