reframe_latm.c File Reference

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

Data Structures
struct	LATMIdx
struct	GF_LATMDmxCtx

Macros
#define	LATM_DMX_MAX_SIZE   8192
#define	OFFS(_n)   #_n, offsetof(GF_LATMDmxCtx, _n)

Functions
static Bool	latm_dmx_sync_frame_bs (GF_BitStream *bs, GF_M4ADecSpecInfo *acfg, u32 *nb_bytes, u8 *buffer, u32 *nb_skipped)
GF_Err	latm_dmx_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static void	latm_dmx_check_dur (GF_Filter *filter, GF_LATMDmxCtx *ctx)
static void	latm_dmx_check_pid (GF_Filter *filter, GF_LATMDmxCtx *ctx)
static Bool	latm_dmx_process_event (GF_Filter *filter, const GF_FilterEvent *evt)
static GFINLINE void	latm_dmx_update_cts (GF_LATMDmxCtx *ctx)
GF_Err	latm_dmx_process (GF_Filter *filter)
static void	latm_dmx_finalize (GF_Filter *filter)
static const char *	latm_dmx_probe_data (const u8 *data, u32 size, GF_FilterProbeScore *score)
const GF_FilterRegister *	latm_dmx_register (GF_FilterSession *session)

Variables
static const GF_FilterCapability	LATMDmxCaps []
static const GF_FilterArgs	LATMDmxArgs []
GF_FilterRegister	LATMDmxRegister

---

Data Structure Documentation

LATMIdx

struct LATMIdx

Data Fields
u64	pos
Double	duration

GF_LATMDmxCtx

struct GF_LATMDmxCtx

Data Fields
u32	frame_size
Double	index
GF_FilterPid *	ipid
GF_FilterPid *	opid
GF_BitStream *	bs
u64	file_pos
u64	cts
u32	sr_idx
u32	nb_ch
u32	base_object_type
GF_Fraction64	duration
Double	start_range
Bool	in_seek
u32	timescale
GF_M4ADecSpecInfo	acfg
char *	latm_buffer
u32	latm_buffer_size
u32	latm_buffer_alloc
u32	dts_inc
Bool	is_playing
Bool	is_file
Bool	file_loaded
Bool	initial_play_done
GF_FilterPacket *	src_pck
LATMIdx *	indexes
u32	index_alloc_size
u32	index_size
u32	resume_from
Bool	prev_sap
u32	bitrate
GF_Err	in_error
Bool	copy_props

Macro Definition Documentation

LATM_DMX_MAX_SIZE

#define LATM_DMX_MAX_SIZE   8192

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_LATMDmxCtx, _n)

Function Documentation

latm_dmx_sync_frame_bs()

static Bool latm_dmx_sync_frame_bs ( GF_BitStream *  bs, GF_M4ADecSpecInfo *  acfg, u32 *  nb_bytes, u8 *  buffer, u32 *  nb_skipped  )

static

latm_dmx_configure_pid()

GF_Err latm_dmx_configure_pid	(	GF_Filter *	filter,
		GF_FilterPid *	pid,
		Bool	is_remove
	)

latm_dmx_check_dur()

static void latm_dmx_check_dur ( GF_Filter *  filter, GF_LATMDmxCtx *  ctx  )

static

latm_dmx_check_pid()

static void latm_dmx_check_pid ( GF_Filter *  filter, GF_LATMDmxCtx *  ctx  )

static

latm_dmx_process_event()

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

static

latm_dmx_update_cts()

static GFINLINE void latm_dmx_update_cts ( GF_LATMDmxCtx *  ctx )

static

latm_dmx_process()

GF_Err latm_dmx_process

(

GF_Filter *

filter

)

latm_dmx_finalize()

static void latm_dmx_finalize ( GF_Filter *  filter )

static

latm_dmx_probe_data()

static const char * latm_dmx_probe_data ( const u8 *  data, u32  size, GF_FilterProbeScore *  score  )

static

latm_dmx_register()

const GF_FilterRegister * latm_dmx_register

(

GF_FilterSession *

session

)

Variable Documentation

LATMDmxCaps

const GF_FilterCapability LATMDmxCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_FILE),
        CAP_STRING(GF_CAPS_INPUT, GF_PROP_PID_FILE_EXT, "latm|usac|xheaac"),
        CAP_STRING(GF_CAPS_INPUT, GF_PROP_PID_MIME, "audio/aac+latm|audio/xheaac+latm"),
        CAP_UINT(GF_CAPS_OUTPUT_STATIC, GF_PROP_PID_STREAM_TYPE, GF_STREAM_AUDIO),
        CAP_UINT(GF_CAPS_OUTPUT_STATIC, GF_PROP_PID_CODECID, GF_CODECID_AAC_MPEG4),
        CAP_UINT(GF_CAPS_OUTPUT_STATIC, GF_PROP_PID_CODECID, GF_CODECID_AAC_MPEG2_MP),
        CAP_UINT(GF_CAPS_OUTPUT_STATIC, GF_PROP_PID_CODECID, GF_CODECID_AAC_MPEG2_LCP),
        CAP_UINT(GF_CAPS_OUTPUT_STATIC, GF_PROP_PID_CODECID, GF_CODECID_AAC_MPEG2_SSRP),
        CAP_BOOL(GF_CAPS_OUTPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
        {0},
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_STREAM_TYPE, GF_STREAM_AUDIO),
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_CODECID, GF_CODECID_AAC_MPEG4),
        CAP_BOOL(GF_CAPS_INPUT,GF_PROP_PID_UNFRAMED, GF_TRUE),
        CAP_BOOL(GF_CAPS_INPUT,GF_PROP_PID_UNFRAMED_LATM, GF_TRUE),
}

LATMDmxArgs

const GF_FilterArgs LATMDmxArgs[]

static

Initial value:

=
{
        { OFFS(frame_size), "size of AAC frame in audio samples", GF_PROP_UINT, "1024", NULL, GF_FS_ARG_HINT_EXPERT},
        { OFFS(index), "indexing window length", GF_PROP_DOUBLE, "1.0", NULL, 0},
        {0}
}

LATMDmxRegister

GF_FilterRegister LATMDmxRegister

Initial value:

= {
        .name = "rflatm",
 
 
        .private_size = sizeof(GF_LATMDmxCtx),
        .args = LATMDmxArgs,
        .finalize = latm_dmx_finalize,
        SETCAPS(LATMDmxCaps),
        .configure_pid = latm_dmx_configure_pid,
        .process = latm_dmx_process,
        .probe_data = latm_dmx_probe_data,
        .process_event = latm_dmx_process_event
}