/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Library <2001> Thomas Vander Stichele * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #ifndef __GST_AUDIO_AUDIO_H__ #define __GST_AUDIO_AUDIO_H__ #include G_BEGIN_DECLS #if G_BYTE_ORDER == G_BIG_ENDIAN #define _GST_AUDIO_FORMAT_NE(fmt) GST_AUDIO_FORMAT_ ## fmt ## BE #elif G_BYTE_ORDER == G_LITTLE_ENDIAN #define _GST_AUDIO_FORMAT_NE(fmt) GST_AUDIO_FORMAT_ ## fmt ## LE #endif /** * GstAudioFormat: * @GST_AUDIO_FORMAT_UNKNOWN: unknown audio format * @GST_AUDIO_FORMAT_S8: 8 bits in 8 bits, signed * @GST_AUDIO_FORMAT_U8: 8 bits in 8 bits, unsigned * @GST_AUDIO_FORMAT_S16LE: 16 bits in 16 bits, signed, little endian * @GST_AUDIO_FORMAT_S16BE: 16 bits in 16 bits, signed, big endian * @GST_AUDIO_FORMAT_U16LE: 16 bits in 16 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U16BE: 16 bits in 16 bits, unsigned, big endian * @GST_AUDIO_FORMAT_S24_32LE: 24 bits in 32 bits, signed, little endian * @GST_AUDIO_FORMAT_S24_32BE: 24 bits in 32 bits, signed, big endian * @GST_AUDIO_FORMAT_U24_32LE: 24 bits in 32 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U24_32BE: 24 bits in 32 bits, unsigned, big endian * @GST_AUDIO_FORMAT_S32LE: 32 bits in 32 bits, signed, little endian * @GST_AUDIO_FORMAT_S32BE: 32 bits in 32 bits, signed, big endian * @GST_AUDIO_FORMAT_U32LE: 32 bits in 32 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U32BE: 32 bits in 32 bits, unsigned, big endian * @GST_AUDIO_FORMAT_S24LE: 24 bits in 24 bits, signed, little endian * @GST_AUDIO_FORMAT_S24BE: 24 bits in 24 bits, signed, big endian * @GST_AUDIO_FORMAT_U24LE: 24 bits in 24 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U24BE: 24 bits in 24 bits, unsigned, big endian * @GST_AUDIO_FORMAT_S20LE: 20 bits in 24 bits, signed, little endian * @GST_AUDIO_FORMAT_S20BE: 20 bits in 24 bits, signed, big endian * @GST_AUDIO_FORMAT_U20LE: 20 bits in 24 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U20BE: 20 bits in 24 bits, unsigned, big endian * @GST_AUDIO_FORMAT_S18LE: 18 bits in 24 bits, signed, little endian * @GST_AUDIO_FORMAT_S18BE: 18 bits in 24 bits, signed, big endian * @GST_AUDIO_FORMAT_U18LE: 18 bits in 24 bits, unsigned, little endian * @GST_AUDIO_FORMAT_U18BE: 18 bits in 24 bits, unsigned, big endian * @GST_AUDIO_FORMAT_F32LE: 32-bit floating point samples, little endian * @GST_AUDIO_FORMAT_F32BE: 32-bit floating point samples, big endian * @GST_AUDIO_FORMAT_F64LE: 64-bit floating point samples, little endian * @GST_AUDIO_FORMAT_F64BE: 64-bit floating point samples, big endian * @GST_AUDIO_FORMAT_S16: 16 bits in 16 bits, signed, native endianness * @GST_AUDIO_FORMAT_U16: 16 bits in 16 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_S24_32: 24 bits in 32 bits, signed, native endianness * @GST_AUDIO_FORMAT_U24_32: 24 bits in 32 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_S32: 32 bits in 32 bits, signed, native endianness * @GST_AUDIO_FORMAT_U32: 32 bits in 32 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_S24: 24 bits in 24 bits, signed, native endianness * @GST_AUDIO_FORMAT_U24: 24 bits in 24 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_S20: 20 bits in 24 bits, signed, native endianness * @GST_AUDIO_FORMAT_U20: 20 bits in 24 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_S18: 18 bits in 24 bits, signed, native endianness * @GST_AUDIO_FORMAT_U18: 18 bits in 24 bits, unsigned, native endianness * @GST_AUDIO_FORMAT_F32: 32-bit floating point samples, native endianness * @GST_AUDIO_FORMAT_F64: 64-bit floating point samples, native endianness * * Enum value describing the most common audio formats. * * Since: 0.10.36 */ typedef enum { GST_AUDIO_FORMAT_UNKNOWN, /* 8 bit */ GST_AUDIO_FORMAT_S8, GST_AUDIO_FORMAT_U8, /* 16 bit */ GST_AUDIO_FORMAT_S16LE, GST_AUDIO_FORMAT_S16BE, GST_AUDIO_FORMAT_U16LE, GST_AUDIO_FORMAT_U16BE, /* 24 bit in low 3 bytes of 32 bits*/ GST_AUDIO_FORMAT_S24_32LE, GST_AUDIO_FORMAT_S24_32BE, GST_AUDIO_FORMAT_U24_32LE, GST_AUDIO_FORMAT_U24_32BE, /* 32 bit */ GST_AUDIO_FORMAT_S32LE, GST_AUDIO_FORMAT_S32BE, GST_AUDIO_FORMAT_U32LE, GST_AUDIO_FORMAT_U32BE, /* 24 bit in 3 bytes*/ GST_AUDIO_FORMAT_S24LE, GST_AUDIO_FORMAT_S24BE, GST_AUDIO_FORMAT_U24LE, GST_AUDIO_FORMAT_U24BE, /* 20 bit in 3 bytes*/ GST_AUDIO_FORMAT_S20LE, GST_AUDIO_FORMAT_S20BE, GST_AUDIO_FORMAT_U20LE, GST_AUDIO_FORMAT_U20BE, /* 18 bit in 3 bytes*/ GST_AUDIO_FORMAT_S18LE, GST_AUDIO_FORMAT_S18BE, GST_AUDIO_FORMAT_U18LE, GST_AUDIO_FORMAT_U18BE, /* float */ GST_AUDIO_FORMAT_F32LE, GST_AUDIO_FORMAT_F32BE, GST_AUDIO_FORMAT_F64LE, GST_AUDIO_FORMAT_F64BE, /* native endianness equivalents */ GST_AUDIO_FORMAT_S16 = _GST_AUDIO_FORMAT_NE(S16), GST_AUDIO_FORMAT_U16 = _GST_AUDIO_FORMAT_NE(U16), GST_AUDIO_FORMAT_S24_32 = _GST_AUDIO_FORMAT_NE(S24_32), GST_AUDIO_FORMAT_U24_32 = _GST_AUDIO_FORMAT_NE(U24_32), GST_AUDIO_FORMAT_S32 = _GST_AUDIO_FORMAT_NE(S32), GST_AUDIO_FORMAT_U32 = _GST_AUDIO_FORMAT_NE(U32), GST_AUDIO_FORMAT_S24 = _GST_AUDIO_FORMAT_NE(S24), GST_AUDIO_FORMAT_U24 = _GST_AUDIO_FORMAT_NE(U24), GST_AUDIO_FORMAT_S20 = _GST_AUDIO_FORMAT_NE(S20), GST_AUDIO_FORMAT_U20 = _GST_AUDIO_FORMAT_NE(U20), GST_AUDIO_FORMAT_S18 = _GST_AUDIO_FORMAT_NE(S18), GST_AUDIO_FORMAT_U18 = _GST_AUDIO_FORMAT_NE(U18), GST_AUDIO_FORMAT_F32 = _GST_AUDIO_FORMAT_NE(F32), GST_AUDIO_FORMAT_F64 = _GST_AUDIO_FORMAT_NE(F64) } GstAudioFormat; /* FIXME: need GTypes */ typedef struct _GstAudioFormatInfo GstAudioFormatInfo; typedef struct _GstAudioInfo GstAudioInfo; /** * GstAudioFormatFlags: * @GST_AUDIO_FORMAT_FLAG_INTEGER: integer samples * @GST_AUDIO_FORMAT_FLAG_FLOAT: float samples * @GST_AUDIO_FORMAT_FLAG_SIGNED: signed samples * @GST_AUDIO_FORMAT_FLAG_COMPLEX: complex layout * * The different audio flags that a format info can have. * * Since: 0.10.36 */ typedef enum { GST_AUDIO_FORMAT_FLAG_INTEGER = (1 << 0), GST_AUDIO_FORMAT_FLAG_FLOAT = (1 << 1), GST_AUDIO_FORMAT_FLAG_SIGNED = (1 << 2), GST_AUDIO_FORMAT_FLAG_COMPLEX = (1 << 4) } GstAudioFormatFlags; /** * GstAudioFormatInfo: * @format: #GstAudioFormat * @name: string representation of the format * @flags: #GstAudioFormatFlags * @endianness: the endianness * @width: amount of bits used for one sample * @depth: amount of valid bits in @width * @silence: @width/8 bytes with 1 silent sample * * Information for an audio format. * * Since: 0.10.36 */ struct _GstAudioFormatInfo { GstAudioFormat format; const gchar * name; GstAudioFormatFlags flags; gint endianness; gint width; gint depth; guint8 silence[8]; /*< private >*/ guint padding_i[4]; gpointer padding_p[4]; }; #define GST_AUDIO_FORMAT_INFO_FORMAT(info) ((info)->format) #define GST_AUDIO_FORMAT_INFO_NAME(info) ((info)->name) #define GST_AUDIO_FORMAT_INFO_FLAGS(info) ((info)->flags) #define GST_AUDIO_FORMAT_INFO_IS_INTEGER(info) !!((info)->flags & GST_AUDIO_FORMAT_FLAG_INTEGER) #define GST_AUDIO_FORMAT_INFO_IS_FLOAT(info) !!((info)->flags & GST_AUDIO_FORMAT_FLAG_FLOAT) #define GST_AUDIO_FORMAT_INFO_IS_SIGNED(info) !!((info)->flags & GST_AUDIO_FORMAT_FLAG_SIGNED) #define GST_AUDIO_FORMAT_INFO_ENDIANNESS(info) ((info)->endianness) #define GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN(info) ((info)->endianness == G_LITTLE_ENDIAN) #define GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN(info) ((info)->endianness == G_BIG_ENDIAN) #define GST_AUDIO_FORMAT_INFO_WIDTH(info) ((info)->width) #define GST_AUDIO_FORMAT_INFO_DEPTH(info) ((info)->depth) const GstAudioFormatInfo * gst_audio_format_get_info (GstAudioFormat format) G_GNUC_CONST; /** * GstAudioFlags: * @GST_AUDIO_FLAG_NONE: no valid flag * @GST_AUDIO_FLAG_DEFAULT_POSITIONS: unpositioned audio layout, position array * contains the default layout (meaning that the channel layout was not * explicitly specified in the caps) * * Extra audio flags * * Since: 0.10.36 */ typedef enum { GST_AUDIO_FLAG_NONE = 0, GST_AUDIO_FLAG_DEFAULT_POSITIONS = (1 << 0) } GstAudioFlags; /** * GstAudioInfo: * @finfo: the format info of the audio * @flags: additional audio flags * @rate: the audio sample rate * @channels: the number of channels * @bpf: the number of bytes for one frame, this is the size of one * sample * @channels * @position: the position for each channel (assume all NONE for >64 channels) * * Information describing audio properties. This information can be filled * in from GstCaps with gst_audio_info_from_caps(). * * Use the provided macros to access the info in this structure. * * Since: 0.10.36 */ struct _GstAudioInfo { const GstAudioFormatInfo *finfo; GstAudioFlags flags; gint rate; gint channels; gint bpf; GstAudioChannelPosition position[64]; }; #define GST_AUDIO_INFO_FORMAT(i) (GST_AUDIO_FORMAT_INFO_FORMAT((i)->finfo)) #define GST_AUDIO_INFO_NAME(i) (GST_AUDIO_FORMAT_INFO_NAME((i)->finfo)) #define GST_AUDIO_INFO_WIDTH(i) (GST_AUDIO_FORMAT_INFO_WIDTH((i)->finfo)) #define GST_AUDIO_INFO_DEPTH(i) (GST_AUDIO_FORMAT_INFO_DEPTH((i)->finfo)) #define GST_AUDIO_INFO_BPS(info) (GST_AUDIO_INFO_DEPTH(info) >> 3) #define GST_AUDIO_INFO_IS_INTEGER(i) (GST_AUDIO_FORMAT_INFO_IS_INTEGER((i)->finfo)) #define GST_AUDIO_INFO_IS_FLOAT(i) (GST_AUDIO_FORMAT_INFO_IS_FLOAT((i)->finfo)) #define GST_AUDIO_INFO_IS_SIGNED(i) (GST_AUDIO_FORMAT_INFO_IS_SIGNED((i)->finfo)) #define GST_AUDIO_INFO_ENDIANNESS(i) (GST_AUDIO_FORMAT_INFO_ENDIANNES((i)->finfo)) #define GST_AUDIO_INFO_IS_LITTLE_ENDIAN(i) (GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN((i)->finfo)) #define GST_AUDIO_INFO_IS_BIG_ENDIAN(i) (GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN((i)->finfo)) #define GST_AUDIO_INFO_FLAGS(info) ((info)->flags) #define GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS(info) ((info)->flags & GST_AUDIO_FLAG_DEFAULT_POSITIONS) #define GST_AUDIO_INFO_RATE(info) ((info)->rate) #define GST_AUDIO_INFO_CHANNELS(info) ((info)->channels) #define GST_AUDIO_INFO_BPF(info) ((info)->bpf) #define GST_AUDIO_INFO_POSITION(info,c) ((info)->position[c]) void gst_audio_info_init (GstAudioInfo * info); void gst_audio_info_clear (GstAudioInfo * info); GstAudioInfo * gst_audio_info_copy (GstAudioInfo * info); void gst_audio_info_free (GstAudioInfo * info); gboolean gst_audio_info_from_caps (GstAudioInfo * info, const GstCaps * caps); GstCaps * gst_audio_info_to_caps (GstAudioInfo * info); gboolean gst_audio_info_convert (GstAudioInfo * info, GstFormat src_fmt, gint64 src_val, GstFormat dest_fmt, gint64 * dest_val); /* For people that are looking at this source: the purpose of these defines is * to make GstCaps a bit easier, in that you don't have to know all of the * properties that need to be defined. you can just use these macros. currently * (8/01) the only plugins that use these are the passthrough, speed, volume, * adder, and [de]interleave plugins. These are for convenience only, and do not * specify the 'limits' of GStreamer. you might also use these definitions as a * base for making your own caps, if need be. * * For example, to make a source pad that can output streams of either mono * float or any channel int: * * template = gst_pad_template_new * ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, * gst_caps_append(gst_caps_new ("sink_int", "audio/x-raw-int", * GST_AUDIO_INT_PAD_TEMPLATE_PROPS), * gst_caps_new ("sink_float", "audio/x-raw-float", * GST_AUDIO_FLOAT_PAD_TEMPLATE_PROPS)), * NULL); * * sinkpad = gst_pad_new_from_template(template, "sink"); * * Andy Wingo, 18 August 2001 * Thomas, 6 September 2002 */ /* conversion macros */ /** * GST_FRAMES_TO_CLOCK_TIME: * @frames: sample frames * @rate: sampling rate * * Calculate clocktime from sample @frames and @rate. */ #define GST_FRAMES_TO_CLOCK_TIME(frames, rate) \ ((GstClockTime) gst_util_uint64_scale_round (frames, GST_SECOND, rate)) /** * GST_CLOCK_TIME_TO_FRAMES: * @clocktime: clock time * @rate: sampling rate * * Calculate frames from @clocktime and sample @rate. */ #define GST_CLOCK_TIME_TO_FRAMES(clocktime, rate) \ gst_util_uint64_scale_round (clocktime, rate, GST_SECOND) /** * GST_AUDIO_DEF_RATE: * * Standard sampling rate used in consumer audio. */ #define GST_AUDIO_DEF_RATE 44100 /** * GST_AUDIO_INT_PAD_TEMPLATE_CAPS: * * Template caps for integer audio. Can be used when defining a * #GstStaticPadTemplate */ #define GST_AUDIO_INT_PAD_TEMPLATE_CAPS \ "audio/x-raw-int, " \ "rate = (int) [ 1, MAX ], " \ "channels = (int) [ 1, MAX ], " \ "endianness = (int) { LITTLE_ENDIAN, BIG_ENDIAN }, " \ "width = (int) { 8, 16, 24, 32 }, " \ "depth = (int) [ 1, 32 ], " \ "signed = (boolean) { true, false }" /** * GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS: * * Template caps for 16bit integer stereo audio in native byte-order. * Can be used when defining a #GstStaticPadTemplate */ #define GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS \ "audio/x-raw-int, " \ "rate = (int) [ 1, MAX ], " \ "channels = (int) 2, " \ "endianness = (int) BYTE_ORDER, " \ "width = (int) 16, " \ "depth = (int) 16, " \ "signed = (boolean) true" /** * GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS: * * Template caps for float audio. Can be used when defining a * #GstStaticPadTemplate */ #define GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS \ "audio/x-raw-float, " \ "rate = (int) [ 1, MAX ], " \ "channels = (int) [ 1, MAX ], " \ "endianness = (int) { LITTLE_ENDIAN , BIG_ENDIAN }, " \ "width = (int) { 32, 64 }" /** * GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS: * * Template caps for 32bit float mono audio in native byte-order. * Can be used when defining a #GstStaticPadTemplate */ #define GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS \ "audio/x-raw-float, " \ "width = (int) 32, " \ "rate = (int) [ 1, MAX ], " \ "channels = (int) 1, " \ "endianness = (int) BYTE_ORDER" /* * this library defines and implements some helper functions for audio * handling */ /* get byte size of audio frame (based on caps of pad */ int gst_audio_frame_byte_size (GstPad* pad); /* get length in frames of buffer */ long gst_audio_frame_length (GstPad* pad, GstBuffer* buf); GstClockTime gst_audio_duration_from_pad_buffer (GstPad * pad, GstBuffer * buf); /* check if the buffer size is a whole multiple of the frame size */ gboolean gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf); /* functions useful for _getcaps functions */ /** * GstAudioFieldFlag: * @GST_AUDIO_FIELD_RATE: add rate field to caps * @GST_AUDIO_FIELD_CHANNELS: add channels field to caps * @GST_AUDIO_FIELD_ENDIANNESS: add endianness field to caps * @GST_AUDIO_FIELD_WIDTH: add width field to caps * @GST_AUDIO_FIELD_DEPTH: add depth field to caps * @GST_AUDIO_FIELD_SIGNED: add signed field to caps * * Do not use anymore. * * Deprecated: use gst_structure_set() directly */ #ifndef GST_DISABLE_DEPRECATED typedef enum { GST_AUDIO_FIELD_RATE = (1 << 0), GST_AUDIO_FIELD_CHANNELS = (1 << 1), GST_AUDIO_FIELD_ENDIANNESS = (1 << 2), GST_AUDIO_FIELD_WIDTH = (1 << 3), GST_AUDIO_FIELD_DEPTH = (1 << 4), GST_AUDIO_FIELD_SIGNED = (1 << 5) } GstAudioFieldFlag; #endif #ifndef GST_DISABLE_DEPRECATED void gst_audio_structure_set_int (GstStructure *structure, GstAudioFieldFlag flag); #endif /* GST_DISABLE_DEPRECATED */ GstBuffer *gst_audio_buffer_clip (GstBuffer *buffer, GstSegment *segment, gint rate, gint frame_size); G_END_DECLS #endif /* __GST_AUDIO_AUDIO_H__ */