diff options
Diffstat (limited to 'dvb-spec/dvbapi/audio.tex')
| -rw-r--r-- | dvb-spec/dvbapi/audio.tex | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/dvb-spec/dvbapi/audio.tex b/dvb-spec/dvbapi/audio.tex index 7b6427094..540248463 100644 --- a/dvb-spec/dvbapi/audio.tex +++ b/dvb-spec/dvbapi/audio.tex @@ -18,7 +18,7 @@ replaying from an internal (demuxer) or external (user write) source. typedef enum { AUDIO_SOURCE_DEMUX, AUDIO_SOURCE_MEMORY -} audio_stream_source_t; +} audio\_stream_source_t; \end{verbatim} AUDIO\_SOURCE\_DEMUX selects the demultiplexer (fed either by the frontend or the DVR device) as the source of @@ -36,7 +36,7 @@ typedef enum { AUDIO_STOPPED, AUDIO_PLAYING, AUDIO_PAUSED -} audio_play_state_t; +} audio\_play_state_t; \end{verbatim} \devsubsubsec{audioChannelSelect\_t} @@ -48,33 +48,33 @@ typedef enum { AUDIO_STEREO, AUDIO_MONO_LEFT, AUDIO_MONO_RIGHT, -} audio_channel_select_t; +} audio\_channel_select_t; \end{verbatim} -\devsubsubsec{audio_status\_t} +\devsubsubsec{audio\_status\_t} \label{audiostatus} The AUDIO\_GET\_STATUS call returns the following structure informing about various states of the playback operation. \begin{verbatim} -typedef struct audio_status { +typedef struct audio\_status { boolean AV_sync_state; boolean mute_state; - audio_play_state_t play_state; - audio_stream_source_t stream_source; - audio_channel_select_t channel_select; + audio\_play_state_t play_state; + audio\_stream_source_t stream_source; + audio\_channel_select_t channel_select; boolean bypass_mode; -} audio_status_t; +} audio\_status_t; \end{verbatim} -\devsubsubsec{audio_mixer\_t} +\devsubsubsec{audio\_mixer\_t} \label{audiomixer} The following structure is used by the AUDIO\_SET\_MIXER call to set the audio volume. \begin{verbatim} -typedef struct audio_mixer { +typedef struct audio\_mixer { unsigned int volume_left; unsigned int volume_right; -} audio_mixer_t; +} audio\_mixer_t; \end{verbatim} \devsubsubsec{audio encodings} @@ -99,20 +99,20 @@ the following bits set according to the hardwares capabilities. The ioctl AUDIO\_SET\_KARAOKE uses the following format: \begin{verbatim} typedef -struct audio_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */ +struct audio\_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */ int vocal1; /* into left and right t at 70% each */ int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets */ int melody; /* mixed into the left channel and */ /* Vocal2 into the right channel at 100% each. */ /* if Melody is non-zero, the melody channel gets mixed */ /* into left and right */ -} audio_karaoke_t; +} audio\_karaoke_t; \end{verbatim} \devsubsubsec{audio attributes} \label{aattrib} The following attributes can be set by a call to AUDIO\_SET\_ATTRIBUTES: \begin{verbatim} -typedef uint16_t audio_attributes_t; +typedef uint16_t audio\_attributes_t; /* bits: descr. */ /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */ /* 12 multichannel extension */ @@ -311,13 +311,13 @@ typedef uint16_t audio_attributes_t; \ifunction{AUDIO\_GET\_STATUS}{ int ioctl(int fd, int request = AUDIO\_GET\_STATUS, - struct audio_status *status);}{ + struct audio\_status *status);}{ This ioctl call asks the Audio Device to return the current state of the Audio Device. }{ int fd & File descriptor returned by a previous call to open().\\ int request & Equals AUDIO\_GET\_STATUS for this command.\\ - struct audio_status *status & Returns the current state of Audio Device. + struct audio\_status *status & Returns the current state of Audio Device. }{ EBADF& fd is not a valid open file descriptor.\\ EINTERNAL & Internal error.\\ @@ -371,12 +371,12 @@ typedef uint16_t audio_attributes_t; } \ifunction{AUDIO\_SET\_MIXER}{ - int ioctl(int fd, int request = AUDIO\_SET\_MIXER, audio_mixer\_t *mix);}{ + int ioctl(int fd, int request = AUDIO\_SET\_MIXER, audio\_mixer\_t *mix);}{ This ioctl lets you adjust the mixer settings of the audio decoder. }{ int fd & File descriptor returned by a previous call to open().\\ int request & Equals AUDIO\_SET\_ID for this command.\\ - audio_mixer\_t *mix& mixer settings. + audio\_mixer\_t *mix& mixer settings. }{ EBADF& fd is not a valid open file descriptor.\\ EINTERNAL & Internal error.\\ @@ -425,12 +425,12 @@ typedef uint16_t audio_attributes_t; } \ifunction{AUDIO\_SET\_KARAOKE}{ - int ioctl(fd, int request = AUDIO\_SET\_STREAMTYPE, audio_karaoke\_t *karaoke);}{ + int ioctl(fd, int request = AUDIO\_SET\_STREAMTYPE, audio\_karaoke\_t *karaoke);}{ This ioctl allows one to set the mixer settings for a karaoke DVD. }{ int fd & File descriptor returned by a previous call to open().\\ int request & Equals AUDIO\_SET\_STREAMTYPE for this command.\\ - audio_karaoke\_t *karaoke & karaoke settings according to section \ref{audiokaraoke}.\\ + audio\_karaoke\_t *karaoke & karaoke settings according to section \ref{audiokaraoke}.\\ }{ EBADF & fd is not a valid open file descriptor \\ EINVAL& karaoke is not a valid or supported karaoke setting.\\ |