diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/firewire/amdtp.h')
| -rw-r--r-- | ANDROID_3.4.5/sound/firewire/amdtp.h | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/ANDROID_3.4.5/sound/firewire/amdtp.h b/ANDROID_3.4.5/sound/firewire/amdtp.h deleted file mode 100644 index 537a9cb8..00000000 --- a/ANDROID_3.4.5/sound/firewire/amdtp.h +++ /dev/null @@ -1,169 +0,0 @@ -#ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED -#define SOUND_FIREWIRE_AMDTP_H_INCLUDED - -#include <linux/mutex.h> -#include <linux/spinlock.h> -#include "packets-buffer.h" - -/** - * enum cip_out_flags - describes details of the streaming protocol - * @CIP_NONBLOCKING: In non-blocking mode, each packet contains - * sample_rate/8000 samples, with rounding up or down to adjust - * for clock skew and left-over fractional samples. This should - * be used if supported by the device. - */ -enum cip_out_flags { - CIP_NONBLOCKING = 0, -}; - -/** - * enum cip_sfc - a stream's sample rate - */ -enum cip_sfc { - CIP_SFC_32000 = 0, - CIP_SFC_44100 = 1, - CIP_SFC_48000 = 2, - CIP_SFC_88200 = 3, - CIP_SFC_96000 = 4, - CIP_SFC_176400 = 5, - CIP_SFC_192000 = 6, -}; - -#define AMDTP_OUT_PCM_FORMAT_BITS (SNDRV_PCM_FMTBIT_S16 | \ - SNDRV_PCM_FMTBIT_S32) - -struct fw_unit; -struct fw_iso_context; -struct snd_pcm_substream; - -struct amdtp_out_stream { - struct fw_unit *unit; - enum cip_out_flags flags; - struct fw_iso_context *context; - struct mutex mutex; - - enum cip_sfc sfc; - unsigned int data_block_quadlets; - unsigned int pcm_channels; - unsigned int midi_ports; - void (*transfer_samples)(struct amdtp_out_stream *s, - struct snd_pcm_substream *pcm, - __be32 *buffer, unsigned int frames); - - unsigned int syt_interval; - unsigned int source_node_id_field; - struct iso_packets_buffer buffer; - - struct snd_pcm_substream *pcm; - - int packet_index; - unsigned int data_block_counter; - - unsigned int data_block_state; - - unsigned int last_syt_offset; - unsigned int syt_offset_state; - - unsigned int pcm_buffer_pointer; - unsigned int pcm_period_pointer; -}; - -int amdtp_out_stream_init(struct amdtp_out_stream *s, struct fw_unit *unit, - enum cip_out_flags flags); -void amdtp_out_stream_destroy(struct amdtp_out_stream *s); - -void amdtp_out_stream_set_rate(struct amdtp_out_stream *s, unsigned int rate); -unsigned int amdtp_out_stream_get_max_payload(struct amdtp_out_stream *s); - -int amdtp_out_stream_start(struct amdtp_out_stream *s, int channel, int speed); -void amdtp_out_stream_update(struct amdtp_out_stream *s); -void amdtp_out_stream_stop(struct amdtp_out_stream *s); - -void amdtp_out_stream_set_pcm_format(struct amdtp_out_stream *s, - snd_pcm_format_t format); -void amdtp_out_stream_pcm_abort(struct amdtp_out_stream *s); - -/** - * amdtp_out_stream_set_pcm - configure format of PCM samples - * @s: the AMDTP output stream to be configured - * @pcm_channels: the number of PCM samples in each data block, to be encoded - * as AM824 multi-bit linear audio - * - * This function must not be called while the stream is running. - */ -static inline void amdtp_out_stream_set_pcm(struct amdtp_out_stream *s, - unsigned int pcm_channels) -{ - s->pcm_channels = pcm_channels; -} - -/** - * amdtp_out_stream_set_midi - configure format of MIDI data - * @s: the AMDTP output stream to be configured - * @midi_ports: the number of MIDI ports (i.e., MPX-MIDI Data Channels) - * - * This function must not be called while the stream is running. - */ -static inline void amdtp_out_stream_set_midi(struct amdtp_out_stream *s, - unsigned int midi_ports) -{ - s->midi_ports = midi_ports; -} - -/** - * amdtp_out_streaming_error - check for streaming error - * @s: the AMDTP output stream - * - * If this function returns true, the stream's packet queue has stopped due to - * an asynchronous error. - */ -static inline bool amdtp_out_streaming_error(struct amdtp_out_stream *s) -{ - return s->packet_index < 0; -} - -/** - * amdtp_out_stream_pcm_prepare - prepare PCM device for running - * @s: the AMDTP output stream - * - * This function should be called from the PCM device's .prepare callback. - */ -static inline void amdtp_out_stream_pcm_prepare(struct amdtp_out_stream *s) -{ - s->pcm_buffer_pointer = 0; - s->pcm_period_pointer = 0; -} - -/** - * amdtp_out_stream_pcm_trigger - start/stop playback from a PCM device - * @s: the AMDTP output stream - * @pcm: the PCM device to be started, or %NULL to stop the current device - * - * Call this function on a running isochronous stream to enable the actual - * transmission of PCM data. This function should be called from the PCM - * device's .trigger callback. - */ -static inline void amdtp_out_stream_pcm_trigger(struct amdtp_out_stream *s, - struct snd_pcm_substream *pcm) -{ - ACCESS_ONCE(s->pcm) = pcm; -} - -/** - * amdtp_out_stream_pcm_pointer - get the PCM buffer position - * @s: the AMDTP output stream that transports the PCM data - * - * Returns the current buffer position, in frames. - */ -static inline unsigned long -amdtp_out_stream_pcm_pointer(struct amdtp_out_stream *s) -{ - return ACCESS_ONCE(s->pcm_buffer_pointer); -} - -static inline bool cip_sfc_is_base_44100(enum cip_sfc sfc) -{ - return sfc & 1; -} - -#endif |