diff options
Diffstat (limited to 'gst-libs/gst/audio/audio.h')
| -rw-r--r-- | gst-libs/gst/audio/audio.h | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/gst-libs/gst/audio/audio.h b/gst-libs/gst/audio/audio.h index 5f21e018..4a3428dd 100644 --- a/gst-libs/gst/audio/audio.h +++ b/gst-libs/gst/audio/audio.h @@ -26,6 +26,7 @@ #define __GST_AUDIO_AUDIO_H__ G_BEGIN_DECLS + /* 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 @@ -49,7 +50,9 @@ G_BEGIN_DECLS * * Andy Wingo, 18 August 2001 * Thomas, 6 September 2002 */ + #define GST_AUDIO_DEF_RATE 44100 + #define GST_AUDIO_INT_PAD_TEMPLATE_CAPS \ "audio/x-raw-int, " \ "rate = (int) [ 1, MAX ], " \ @@ -57,7 +60,9 @@ G_BEGIN_DECLS "endianness = (int) { LITTLE_ENDIAN, BIG_ENDIAN }, " \ "width = (int) { 8, 16, 32 }, " \ "depth = (int) [ 1, 32 ], " \ - "signed = (boolean) { true, false }" + "signed = (boolean) { true, false }" + + /* "standard" int audio is native order, 16 bit stereo. */ #define GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS \ "audio/x-raw-int, " \ @@ -66,7 +71,8 @@ G_BEGIN_DECLS "endianness = (int) BYTE_ORDER, " \ "width = (int) 16, " \ "depth = (int) 16, " \ - "signed = (boolean) true" + "signed = (boolean) true" + #define GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS \ "audio/x-raw-float, " \ "rate = (int) [ 1, MAX ], " \ @@ -74,6 +80,7 @@ G_BEGIN_DECLS "endianness = (int) { LITTLE_ENDIAN , BIG_ENDIAN }, " \ "width = (int) { 32, 64 }, " \ "buffer-frames = (int) [ 1, MAX]" + /* "standard" float audio is native order, 32 bit mono. */ #define GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS \ "audio/x-raw-float, " \ @@ -81,42 +88,43 @@ G_BEGIN_DECLS "channels = (int) 1, " \ "endianness = (int) BYTE_ORDER, " \ "buffer-frames = (int) [ 1, MAX]" + /* * 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); +int gst_audio_frame_byte_size (GstPad* pad); /* get length in frames of buffer */ -long gst_audio_frame_length (GstPad * pad, GstBuffer * buf); +long gst_audio_frame_length (GstPad* pad, GstBuffer* buf); /* get frame rate based on caps */ -long gst_audio_frame_rate (GstPad * pad); +long gst_audio_frame_rate (GstPad *pad); /* calculate length in seconds of audio buffer buf based on caps of pad */ -double gst_audio_length (GstPad * pad, GstBuffer * buf); +double gst_audio_length (GstPad* pad, GstBuffer* buf); /* calculate highest possible sample value based on capabilities of pad */ -long gst_audio_highest_sample_value (GstPad * pad); +long gst_audio_highest_sample_value (GstPad* pad); /* check if the buffer size is a whole multiple of the frame size */ -gboolean gst_audio_is_buffer_framed (GstPad * pad, GstBuffer * buf); +gboolean gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf); /* functions useful for _getcaps functions */ -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), +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), GST_AUDIO_FIELD_BUFFER_FRAMES = (1 << 6) } GstAudioFieldFlag; -void gst_audio_structure_set_int (GstStructure * structure, - GstAudioFieldFlag flag); +void gst_audio_structure_set_int (GstStructure *structure, GstAudioFieldFlag flag); G_END_DECLS + #endif /* __GST_AUDIO_AUDIO_H__ */ |