gstaudio

gstaudio

Functions

void (*GstAudioFormatPack) ()
void (*GstAudioFormatUnpack) ()
void gst_audio_info_init ()
gboolean gst_audio_info_from_caps ()
GstCaps * gst_audio_info_to_caps ()
gboolean gst_audio_info_convert ()
const GstAudioFormatInfo * gst_audio_format_get_info ()
GstAudioInfo * gst_audio_info_copy ()
void gst_audio_info_free ()
GstAudioInfo * gst_audio_info_new ()
void gst_audio_info_set_format ()
gboolean gst_audio_info_is_equal ()
GstAudioFormat gst_audio_format_build_integer ()
void gst_audio_format_fill_silence ()
GstAudioFormat gst_audio_format_from_string ()
const gchar * gst_audio_format_to_string ()
#define GST_AUDIO_FORMAT_INFO_DEPTH()
#define GST_AUDIO_FORMAT_INFO_ENDIANNESS()
#define GST_AUDIO_FORMAT_INFO_FLAGS()
#define GST_AUDIO_FORMAT_INFO_FORMAT()
#define GST_AUDIO_FORMAT_INFO_IS_FLOAT()
#define GST_AUDIO_FORMAT_INFO_IS_INTEGER()
#define GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN()
#define GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN()
#define GST_AUDIO_FORMAT_INFO_IS_SIGNED()
#define GST_AUDIO_FORMAT_INFO_NAME()
#define GST_AUDIO_FORMAT_INFO_WIDTH()
#define GST_AUDIO_INFO_BPF()
#define GST_AUDIO_INFO_BPS()
#define GST_AUDIO_INFO_CHANNELS()
#define GST_AUDIO_INFO_DEPTH()
#define GST_AUDIO_INFO_FLAGS()
#define GST_AUDIO_INFO_FORMAT()
#define GST_AUDIO_INFO_NAME()
#define GST_AUDIO_INFO_POSITION()
#define GST_AUDIO_INFO_RATE()
#define GST_AUDIO_INFO_WIDTH()
#define GST_AUDIO_INFO_ENDIANNESS()
#define GST_AUDIO_INFO_IS_BIG_ENDIAN()
#define GST_AUDIO_INFO_IS_FLOAT()
#define GST_AUDIO_INFO_IS_INTEGER()
#define GST_AUDIO_INFO_IS_LITTLE_ENDIAN()
#define GST_AUDIO_INFO_IS_SIGNED()
#define GST_AUDIO_INFO_IS_UNPOSITIONED()
#define GST_AUDIO_INFO_IS_VALID()
#define GST_AUDIO_INFO_LAYOUT()
#define GST_FRAMES_TO_CLOCK_TIME()
#define GST_CLOCK_TIME_TO_FRAMES()
#define GST_AUDIO_NE()
#define GST_AUDIO_OE()
#define GST_AUDIO_CAPS_MAKE()
GstBuffer * gst_audio_buffer_clip ()

Types and Values

Includes

#include <gst/audio/audio.h>

Description

Functions

GstAudioFormatPack ()

void
(*GstAudioFormatPack) (const GstAudioFormatInfo *info,
                       GstAudioPackFlags flags,
                       const gpointer src,
                       gpointer data,
                       gint length);

GstAudioFormatUnpack ()

void
(*GstAudioFormatUnpack) (const GstAudioFormatInfo *info,
                         GstAudioPackFlags flags,
                         gpointer dest,
                         const gpointer data,
                         gint length);

gst_audio_info_init ()

void
gst_audio_info_init (GstAudioInfo *info);

gst_audio_info_from_caps ()

gboolean
gst_audio_info_from_caps (GstAudioInfo *info,
                          const GstCaps *caps);

gst_audio_info_to_caps ()

GstCaps *
gst_audio_info_to_caps (const GstAudioInfo *info);

gst_audio_info_convert ()

gboolean
gst_audio_info_convert (const GstAudioInfo *info,
                        GstFormat src_fmt,
                        gint64 src_val,
                        GstFormat dest_fmt,
                        gint64 *dest_val);

gst_audio_format_get_info ()

const GstAudioFormatInfo *
gst_audio_format_get_info (GstAudioFormat format);

gst_audio_info_copy ()

GstAudioInfo *
gst_audio_info_copy (const GstAudioInfo *info);

gst_audio_info_free ()

void
gst_audio_info_free (GstAudioInfo *info);

gst_audio_info_new ()

GstAudioInfo *
gst_audio_info_new (void);

gst_audio_info_set_format ()

void
gst_audio_info_set_format (GstAudioInfo *info,
                           GstAudioFormat format,
                           gint rate,
                           gint channels,
                           const GstAudioChannelPosition *position);

gst_audio_info_is_equal ()

gboolean
gst_audio_info_is_equal (const GstAudioInfo *info,
                         const GstAudioInfo *other);

gst_audio_format_build_integer ()

GstAudioFormat
gst_audio_format_build_integer (gboolean sign,
                                gint endianness,
                                gint width,
                                gint depth);

gst_audio_format_fill_silence ()

void
gst_audio_format_fill_silence (const GstAudioFormatInfo *info,
                               gpointer dest,
                               gsize length);

gst_audio_format_from_string ()

GstAudioFormat
gst_audio_format_from_string (const gchar *format);

gst_audio_format_to_string ()

const gchar *
gst_audio_format_to_string (GstAudioFormat format);

GST_AUDIO_FORMAT_INFO_DEPTH()

#define GST_AUDIO_FORMAT_INFO_DEPTH(info)            ((info)->depth)

GST_AUDIO_FORMAT_INFO_ENDIANNESS()

#define GST_AUDIO_FORMAT_INFO_ENDIANNESS(info)       ((info)->endianness)

GST_AUDIO_FORMAT_INFO_FLAGS()

#define GST_AUDIO_FORMAT_INFO_FLAGS(info)            ((info)->flags)

GST_AUDIO_FORMAT_INFO_FORMAT()

#define GST_AUDIO_FORMAT_INFO_FORMAT(info)           ((info)->format)

GST_AUDIO_FORMAT_INFO_IS_FLOAT()

#define GST_AUDIO_FORMAT_INFO_IS_FLOAT(info)         !!((info)->flags & GST_AUDIO_FORMAT_FLAG_FLOAT)

GST_AUDIO_FORMAT_INFO_IS_INTEGER()

#define GST_AUDIO_FORMAT_INFO_IS_INTEGER(info)       !!((info)->flags & GST_AUDIO_FORMAT_FLAG_INTEGER)

GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN()

#define GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN(info)    ((info)->endianness == G_BIG_ENDIAN)

GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN()

#define GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN(info) ((info)->endianness == G_LITTLE_ENDIAN)

GST_AUDIO_FORMAT_INFO_IS_SIGNED()

#define GST_AUDIO_FORMAT_INFO_IS_SIGNED(info)        !!((info)->flags & GST_AUDIO_FORMAT_FLAG_SIGNED)

GST_AUDIO_FORMAT_INFO_NAME()

#define GST_AUDIO_FORMAT_INFO_NAME(info)             ((info)->name)

GST_AUDIO_FORMAT_INFO_WIDTH()

#define GST_AUDIO_FORMAT_INFO_WIDTH(info)            ((info)->width)

GST_AUDIO_INFO_BPF()

#define GST_AUDIO_INFO_BPF(info)             ((info)->bpf)

GST_AUDIO_INFO_BPS()

#define GST_AUDIO_INFO_BPS(info)             (GST_AUDIO_INFO_DEPTH(info) >> 3)

GST_AUDIO_INFO_CHANNELS()

#define GST_AUDIO_INFO_CHANNELS(info)        ((info)->channels)

GST_AUDIO_INFO_DEPTH()

#define GST_AUDIO_INFO_DEPTH(i)              (GST_AUDIO_FORMAT_INFO_DEPTH((i)->finfo))

GST_AUDIO_INFO_FLAGS()

#define GST_AUDIO_INFO_FLAGS(info)           ((info)->flags)

GST_AUDIO_INFO_FORMAT()

#define GST_AUDIO_INFO_FORMAT(i)             (GST_AUDIO_FORMAT_INFO_FORMAT((i)->finfo))

GST_AUDIO_INFO_NAME()

#define GST_AUDIO_INFO_NAME(i)               (GST_AUDIO_FORMAT_INFO_NAME((i)->finfo))

GST_AUDIO_INFO_POSITION()

#define GST_AUDIO_INFO_POSITION(info,c)      ((info)->position[c])

GST_AUDIO_INFO_RATE()

#define GST_AUDIO_INFO_RATE(info)            ((info)->rate)

GST_AUDIO_INFO_WIDTH()

#define GST_AUDIO_INFO_WIDTH(i)              (GST_AUDIO_FORMAT_INFO_WIDTH((i)->finfo))

GST_AUDIO_INFO_ENDIANNESS()

#define GST_AUDIO_INFO_ENDIANNESS(i)         (GST_AUDIO_FORMAT_INFO_ENDIANNESS((i)->finfo))

GST_AUDIO_INFO_IS_BIG_ENDIAN()

#define GST_AUDIO_INFO_IS_BIG_ENDIAN(i)      (GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN((i)->finfo))

GST_AUDIO_INFO_IS_FLOAT()

#define GST_AUDIO_INFO_IS_FLOAT(i)           (GST_AUDIO_FORMAT_INFO_IS_FLOAT((i)->finfo))

GST_AUDIO_INFO_IS_INTEGER()

#define GST_AUDIO_INFO_IS_INTEGER(i)         (GST_AUDIO_FORMAT_INFO_IS_INTEGER((i)->finfo))

GST_AUDIO_INFO_IS_LITTLE_ENDIAN()

#define GST_AUDIO_INFO_IS_LITTLE_ENDIAN(i)   (GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN((i)->finfo))

GST_AUDIO_INFO_IS_SIGNED()

#define GST_AUDIO_INFO_IS_SIGNED(i)          (GST_AUDIO_FORMAT_INFO_IS_SIGNED((i)->finfo))

GST_AUDIO_INFO_IS_UNPOSITIONED()

#define GST_AUDIO_INFO_IS_UNPOSITIONED(info) ((info)->flags & GST_AUDIO_FLAG_UNPOSITIONED)

GST_AUDIO_INFO_IS_VALID()

#define GST_AUDIO_INFO_IS_VALID(i)           ((i)->finfo != NULL && (i)->rate > 0 && (i)->channels > 0 && (i)->bpf > 0)

GST_AUDIO_INFO_LAYOUT()

#define GST_AUDIO_INFO_LAYOUT(info)          ((info)->layout)

GST_FRAMES_TO_CLOCK_TIME()

#define             GST_FRAMES_TO_CLOCK_TIME(frames, rate)

GST_CLOCK_TIME_TO_FRAMES()

#define             GST_CLOCK_TIME_TO_FRAMES(clocktime, rate)

GST_AUDIO_NE()

# define GST_AUDIO_NE(s) G_STRINGIFY(s)"LE"

GST_AUDIO_OE()

# define GST_AUDIO_OE(s) G_STRINGIFY(s)"BE"

GST_AUDIO_CAPS_MAKE()

#define             GST_AUDIO_CAPS_MAKE(format)

gst_audio_buffer_clip ()

GstBuffer *
gst_audio_buffer_clip (GstBuffer *buffer,
                       const GstSegment *segment,
                       gint rate,
                       gint bpf);

Types and Values

enum GstAudioFlags

Members

GST_AUDIO_FLAG_NONE

   

GST_AUDIO_FLAG_UNPOSITIONED

   

enum GstAudioFormat

Members

GST_AUDIO_FORMAT_UNKNOWN

   

GST_AUDIO_FORMAT_ENCODED

   

GST_AUDIO_FORMAT_S8

   

GST_AUDIO_FORMAT_U8

   

GST_AUDIO_FORMAT_S16LE

   

GST_AUDIO_FORMAT_S16BE

   

GST_AUDIO_FORMAT_U16LE

   

GST_AUDIO_FORMAT_U16BE

   

GST_AUDIO_FORMAT_S24_32LE

   

GST_AUDIO_FORMAT_S24_32BE

   

GST_AUDIO_FORMAT_U24_32LE

   

GST_AUDIO_FORMAT_U24_32BE

   

GST_AUDIO_FORMAT_S32LE

   

GST_AUDIO_FORMAT_S32BE

   

GST_AUDIO_FORMAT_U32LE

   

GST_AUDIO_FORMAT_U32BE

   

GST_AUDIO_FORMAT_S24LE

   

GST_AUDIO_FORMAT_S24BE

   

GST_AUDIO_FORMAT_U24LE

   

GST_AUDIO_FORMAT_U24BE

   

GST_AUDIO_FORMAT_S20LE

   

GST_AUDIO_FORMAT_S20BE

   

GST_AUDIO_FORMAT_U20LE

   

GST_AUDIO_FORMAT_U20BE

   

GST_AUDIO_FORMAT_S18LE

   

GST_AUDIO_FORMAT_S18BE

   

GST_AUDIO_FORMAT_U18LE

   

GST_AUDIO_FORMAT_U18BE

   

GST_AUDIO_FORMAT_F32LE

   

GST_AUDIO_FORMAT_F32BE

   

GST_AUDIO_FORMAT_F64LE

   

GST_AUDIO_FORMAT_F64BE

   

GST_AUDIO_FORMAT_S16

   

GST_AUDIO_FORMAT_U16

   

GST_AUDIO_FORMAT_S24_32

   

GST_AUDIO_FORMAT_U24_32

   

GST_AUDIO_FORMAT_S32

   

GST_AUDIO_FORMAT_U32

   

GST_AUDIO_FORMAT_S24

   

GST_AUDIO_FORMAT_U24

   

GST_AUDIO_FORMAT_S20

   

GST_AUDIO_FORMAT_U20

   

GST_AUDIO_FORMAT_S18

   

GST_AUDIO_FORMAT_U18

   

GST_AUDIO_FORMAT_F32

   

GST_AUDIO_FORMAT_F64

   

enum GstAudioFormatFlags

Members

GST_AUDIO_FORMAT_FLAG_INTEGER

   

GST_AUDIO_FORMAT_FLAG_FLOAT

   

GST_AUDIO_FORMAT_FLAG_SIGNED

   

GST_AUDIO_FORMAT_FLAG_COMPLEX

   

GST_AUDIO_FORMAT_FLAG_UNPACK

   

struct GstAudioFormatInfo

struct GstAudioFormatInfo {
  GstAudioFormat format;
  const gchar *name;
  const gchar *description;
  GstAudioFormatFlags flags;
  gint endianness;
  gint width;
  gint depth;
  guint8 silence[8];

  GstAudioFormat unpack_format;
  GstAudioFormatUnpack unpack_func;
  GstAudioFormatPack pack_func;
};

struct GstAudioInfo

struct GstAudioInfo {
  const GstAudioFormatInfo *finfo;
  GstAudioFlags             flags;
  GstAudioLayout            layout;
  gint                      rate;
  gint                      channels;
  gint                      bpf;
  GstAudioChannelPosition   position[64];
};

enum GstAudioLayout

Members

GST_AUDIO_LAYOUT_INTERLEAVED

   

GST_AUDIO_LAYOUT_NON_INTERLEAVED

   

enum GstAudioPackFlags

Members

GST_AUDIO_PACK_FLAG_NONE

   

GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE

   

GST_META_TAG_AUDIO_STR

#define GST_META_TAG_AUDIO_STR "audio"

GST_META_TAG_AUDIO_CHANNELS_STR

#define GST_META_TAG_AUDIO_CHANNELS_STR "channels"

GST_META_TAG_AUDIO_RATE_STR

#define GST_META_TAG_AUDIO_RATE_STR "rate"

GST_AUDIO_RATE_RANGE

#define GST_AUDIO_RATE_RANGE "(int) [ 1, max ]"

GST_AUDIO_CHANNELS_RANGE

#define GST_AUDIO_CHANNELS_RANGE "(int) [ 1, max ]"

GST_AUDIO_FORMATS_ALL

#define             GST_AUDIO_FORMATS_ALL

GST_AUDIO_DEF_RATE

#define GST_AUDIO_DEF_RATE 44100

GST_AUDIO_DEF_CHANNELS

#define GST_AUDIO_DEF_CHANNELS 2

GST_AUDIO_DEF_FORMAT

#define GST_AUDIO_DEF_FORMAT "S16LE"