* This file defines functions, structures and macros for audio output object
*/
-/* Max number of pre-filters per input, and max number of post-filters */
-#define AOUT_MAX_FILTERS 10
-
/* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
* will be considered as bogus and be trashed */
#define AOUT_MAX_ADVANCE_TIME (AOUT_MAX_PREPARE_TIME + CLOCK_FREQ)
|| ((p_format)->i_format == VLC_CODEC_A52) \
|| ((p_format)->i_format == VLC_CODEC_DTS) )
-/* This is heavily borrowed from libmad, by Robert Leslie <rob@mars.org> */
-/*
- * Fixed-point format: 0xABBBBBBB
- * A == whole part (sign + 3 bits)
- * B == fractional part (28 bits)
- *
- * Values are signed two's complement, so the effective range is:
- * 0x80000000 to 0x7fffffff
- * -8.0 to +7.9999999962747097015380859375
- *
- * The smallest representable value is:
- * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9)
- *
- * 28 bits of fractional accuracy represent about
- * 8.6 digits of decimal accuracy.
- *
- * Fixed-point numbers can be added or subtracted as normal
- * integers, but multiplication requires shifting the 64-bit result
- * from 56 fractional bits back to 28 (and rounding.)
- */
-typedef int32_t vlc_fixed_t;
-#define FIXED32_FRACBITS 28
-#define FIXED32_MIN ((vlc_fixed_t) -0x80000000L)
-#define FIXED32_MAX ((vlc_fixed_t) +0x7fffffffL)
-#define FIXED32_ONE ((vlc_fixed_t) 0x10000000)
-
-/*
- * Channels descriptions
- */
-
-/* Values available for physical and original channels */
-#define AOUT_CHAN_CENTER 0x1
-#define AOUT_CHAN_LEFT 0x2
-#define AOUT_CHAN_RIGHT 0x4
-#define AOUT_CHAN_REARCENTER 0x10
-#define AOUT_CHAN_REARLEFT 0x20
-#define AOUT_CHAN_REARRIGHT 0x40
-#define AOUT_CHAN_MIDDLELEFT 0x100
-#define AOUT_CHAN_MIDDLERIGHT 0x200
-#define AOUT_CHAN_LFE 0x1000
-
-/* Values available for original channels only */
-#define AOUT_CHAN_DOLBYSTEREO 0x10000
-#define AOUT_CHAN_DUALMONO 0x20000
-#define AOUT_CHAN_REVERSESTEREO 0x40000
-
-#define AOUT_CHAN_PHYSMASK 0xFFFF
-#define AOUT_CHAN_MAX 9
-
/* Values used for the audio-device and audio-channels object variables */
#define AOUT_VAR_MONO 1
#define AOUT_VAR_STEREO 2
#define AOUT_VAR_7_1 8
#define AOUT_VAR_SPDIF 10
+#define AOUT_VAR_CHAN_UNSET 0 /* must be zero */
#define AOUT_VAR_CHAN_STEREO 1
#define AOUT_VAR_CHAN_RSTEREO 2
#define AOUT_VAR_CHAN_LEFT 3
* Main audio output structures
*****************************************************************************/
-#define aout_BufferFree( buffer ) block_Release( buffer )
-
/* Size of a frame for S/PDIF output. */
#define AOUT_SPDIF_SIZE 6144
/* FIXME to remove once aout.h is cleaned a bit more */
#include <vlc_block.h>
-typedef int (*aout_volume_cb) (audio_output_t *, float, bool);
-
/** Audio output object */
struct audio_output
{
VLC_COMMON_MEMBERS
- audio_sample_format_t format; /**< Output format (plugin can modify it
- only when succesfully probed and not afterward) */
-
- struct aout_sys_t *sys; /**< Output plugin private data */
- void (*pf_play)(audio_output_t *, block_t *); /**< Audio buffer callback */
- void (* pf_pause)( audio_output_t *, bool, mtime_t ); /**< Pause/resume
- callback (optional, may be NULL) */
- void (* pf_flush)( audio_output_t *, bool ); /**< Flush/drain callback
- (optional, may be NULL) */
- aout_volume_cb pf_volume_set; /**< Volume setter (or NULL) */
+ struct aout_sys_t *sys; /**< Private data for callbacks */
+
+ int (*start)(audio_output_t *, audio_sample_format_t *fmt);
+ /**< Starts a new stream (mandatory, cannot be NULL).
+ * \param fmt input stream sample format upon entry,
+ * output stream sample format upon return [IN/OUT]
+ * \return VLC_SUCCESS on success, non-zero on failure
+ * \note No other stream may be already started when called.
+ */
+ void (*stop)(audio_output_t *);
+ /**< Stops the existing stream (optional, may be NULL).
+ * \note A stream must have been started when called.
+ */
+ int (*time_get)(audio_output_t *, mtime_t *delay);
+ /**< Estimates playback buffer latency (optional, may be NULL).
+ * \param delay pointer to the delay until the next sample to be written
+ * to the playback buffer is rendered [OUT]
+ * \return 0 on success, non-zero on failure or lack of data
+ * \note A stream must have been started when called.
+ */
+ void (*play)(audio_output_t *, block_t *);
+ /**< Queues a block of samples for playback (mandatory, cannot be NULL).
+ * \note A stream must have been started when called.
+ */
+ void (*pause)( audio_output_t *, bool pause, mtime_t date);
+ /**< Pauses or resumes playback (optional, may be NULL).
+ * \param pause pause if true, resume from pause if false
+ * \param date timestamp when the pause or resume was requested
+ * \note A stream must have been started when called.
+ */
+ void (*flush)( audio_output_t *, bool wait);
+ /**< Flushes or drains the playback buffers (mandatoryl, cannot be NULL).
+ * \param wait true to wait for playback of pending buffers (drain),
+ * false to discard pending buffers (flush)
+ * \note A stream must have been started when called.
+ */
+ int (*volume_set)(audio_output_t *, float volume);
+ /**< Changes playback volume (optional, may be NULL).
+ * \param volume requested volume (0. = mute, 1. = nominal)
+ * \note The volume is always a positive number.
+ * \warning A stream may or may not have been started when called.
+ */
+ int (*mute_set)(audio_output_t *, bool mute);
+ /**< Changes muting (optinal, may be NULL).
+ * \param mute true to mute, false to unmute
+ * \warning A stream may or may not have been started when called.
+ */
+ int (*device_enum)(audio_output_t *, char ***ids, char ***names);
+ /**< Enumerates available audio output devices (optional, may be NULL).
+ * \param ids pointer to a heap-allocated table of heap-allocated
+ * nul-terminated device unique identifiers [OUT]
+ * \param names pointer to a heap-allocated table of heap-allocated
+ * nul-terminated device human-readable names [OUT]
+ * \return The number of entries, or -1 on error.
+ * \warning A stream may or may not have been started when called.
+ */
+ int (*device_select)(audio_output_t *, const char *id);
+ /**< Selects an audio output device (optional, may be NULL).
+ * \param id nul-terminated device unique identifier.
+ * \return 0 on success, non-zero on failure.
+ * \warning A stream may or may not have been started when called.
+ */
+ struct {
+ void (*volume_report)(audio_output_t *, float);
+ void (*mute_report)(audio_output_t *, bool);
+ void (*policy_report)(audio_output_t *, bool);
+ void (*device_report)(audio_output_t *, const char *);
+ int (*gain_request)(audio_output_t *, float);
+ void (*restart_request)(audio_output_t *, unsigned);
+ } event;
};
/**
AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0
};
+#define AOUT_RESTART_FILTERS 1
+#define AOUT_RESTART_OUTPUT 2
+#define AOUT_RESTART_DECODER 4
+
/*****************************************************************************
* Prototypes
*****************************************************************************/
* If pi_chan_order_in or pi_chan_order_out is NULL, it will assume that vlc
* internal (WG4) order is requested.
*/
-VLC_API int aout_CheckChannelReorder( const uint32_t *pi_chan_order_in, const uint32_t *pi_chan_order_out, uint32_t i_channel_mask, int i_channels, int *pi_chan_table );
-VLC_API void aout_ChannelReorder( uint8_t *, int, int, const int *, int );
+VLC_API unsigned aout_CheckChannelReorder( const uint32_t *, const uint32_t *,
+ uint32_t mask, uint8_t *table );
+VLC_API void aout_ChannelReorder(void *, size_t, unsigned, const uint8_t *, vlc_fourcc_t);
+
+VLC_API void aout_Interleave(void *dst, const void *src, unsigned samples,
+ unsigned channels, vlc_fourcc_t fourcc);
+VLC_API void aout_Deinterleave(void *dst, const void *src, unsigned samples,
+ unsigned channels, vlc_fourcc_t fourcc);
/**
* This fonction will compute the extraction parameter into pi_selection to go
/* */
static inline unsigned aout_FormatNbChannels(const audio_sample_format_t *fmt)
{
- return popcount(fmt->i_physical_channels & AOUT_CHAN_PHYSMASK);
+ return popcount(fmt->i_physical_channels);
}
VLC_API unsigned int aout_BitsPerSample( vlc_fourcc_t i_format ) VLC_USED;
#define aout_FormatPrint(o, t, f) aout_FormatPrint(VLC_OBJECT(o), t, f)
VLC_API const char * aout_FormatPrintChannels( const audio_sample_format_t * ) VLC_USED;
-VLC_API void aout_VolumeNoneInit( audio_output_t * );
-VLC_API void aout_VolumeSoftInit( audio_output_t * );
-VLC_API void aout_VolumeHardInit( audio_output_t *, aout_volume_cb );
-VLC_API void aout_VolumeHardSet( audio_output_t *, float, bool );
+VLC_API float aout_VolumeGet (audio_output_t *);
+VLC_API int aout_VolumeSet (audio_output_t *, float);
+VLC_API int aout_MuteGet (audio_output_t *);
+VLC_API int aout_MuteSet (audio_output_t *, bool);
+VLC_API char *aout_DeviceGet (audio_output_t *);
+VLC_API int aout_DeviceSet (audio_output_t *, const char *);
+VLC_API int aout_DevicesList (audio_output_t *, char ***, char ***);
-VLC_API void aout_TimeReport(audio_output_t *, mtime_t);
+/**
+ * Report change of configured audio volume to the core and UI.
+ */
+static inline void aout_VolumeReport(audio_output_t *aout, float volume)
+{
+ aout->event.volume_report(aout, volume);
+}
+
+/**
+ * Report change of muted flag to the core and UI.
+ */
+static inline void aout_MuteReport(audio_output_t *aout, bool mute)
+{
+ aout->event.mute_report(aout, mute);
+}
+
+/**
+ * Report audio policy status.
+ * \parm cork true to request a cork, false to undo any pending cork.
+ */
+static inline void aout_PolicyReport(audio_output_t *aout, bool cork)
+{
+ aout->event.policy_report(aout, cork);
+}
+
+/**
+ * Report change of output device.
+ */
+static inline void aout_DeviceReport(audio_output_t *aout, const char *id)
+{
+ aout->event.device_report(aout, id);
+}
+
+/**
+ * Request a change of software audio amplification.
+ * \param gain linear amplitude gain (must be positive)
+ * \warning Values in excess 1.0 may cause overflow and distorsion.
+ */
+static inline int aout_GainRequest(audio_output_t *aout, float gain)
+{
+ return aout->event.gain_request(aout, gain);
+}
+
+static inline void aout_RestartRequest(audio_output_t *aout, unsigned mode)
+{
+ aout->event.restart_request(aout, mode);
+}
+
+static inline int aout_ChannelsRestart (vlc_object_t *obj, const char *varname,
+ vlc_value_t oldval, vlc_value_t newval, void *data)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ (void)varname; (void)oldval; (void)newval; (void)data;
+
+ aout_RestartRequest (aout, AOUT_RESTART_OUTPUT);
+ return 0;
+}
-VLC_API int aout_ChannelsRestart( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * );
/* */
VLC_API vout_thread_t * aout_filter_RequestVout( filter_t *, vout_thread_t *p_vout, video_format_t *p_fmt ) VLC_USED;
/** Audio output buffer FIFO */
struct aout_fifo_t
{
- aout_buffer_t * p_first;
- aout_buffer_t ** pp_last;
- date_t end_date;
+ block_t *p_first;
+ block_t **pp_last;
+ date_t end_date;
};
/* Legacy packet-oriented audio output helpers */
typedef struct
{
vlc_mutex_t lock;
+ audio_sample_format_t format;
aout_fifo_t partial; /**< Audio blocks before packetization */
aout_fifo_t fifo; /**< Packetized audio blocks */
mtime_t pause_date; /**< Date when paused or VLC_TS_INVALID */
- mtime_t time_report; /**< Desynchronization estimate or VLC_TS_INVALID */
unsigned samples; /**< Samples per packet */
bool starving; /**< Whether currently starving (to limit error messages) */
} aout_packet_t;
-VLC_API void aout_PacketInit(audio_output_t *, aout_packet_t *, unsigned);
-VLC_API void aout_PacketDestroy(audio_output_t *);
+VLC_DEPRECATED void aout_PacketInit(audio_output_t *, aout_packet_t *, unsigned, const audio_sample_format_t *);
+VLC_DEPRECATED void aout_PacketDestroy(audio_output_t *);
-VLC_API void aout_PacketPlay(audio_output_t *, block_t *);
-VLC_API void aout_PacketPause(audio_output_t *, bool, mtime_t);
-VLC_API void aout_PacketFlush(audio_output_t *, bool);
+VLC_DEPRECATED int aout_PacketTimeGet(audio_output_t *, mtime_t *);
+VLC_DEPRECATED void aout_PacketPlay(audio_output_t *, block_t *);
+VLC_DEPRECATED void aout_PacketFlush(audio_output_t *, bool);
-VLC_API block_t *aout_PacketNext(audio_output_t *, mtime_t) VLC_USED;
+VLC_DEPRECATED block_t *aout_PacketNext(audio_output_t *, mtime_t) VLC_USED;
#endif /* VLC_AOUT_H */
projects / vlc / blobdiff