75 static inline uint8_t *cras_shm_buff_for_idx(const struct cras_audio_shm *shm,  in cras_shm_buff_for_idx()  argument
80 	return shm->area->samples + shm->config.used_size * idx;  in cras_shm_buff_for_idx()
85 unsigned cras_shm_check_read_offset(const struct cras_audio_shm *shm,  in cras_shm_check_read_offset()  argument
91 	if (offset > shm->config.used_size)  in cras_shm_check_read_offset()
98 unsigned cras_shm_check_write_offset(const struct cras_audio_shm *shm,  in cras_shm_check_write_offset()  argument
104 	if (offset > shm->config.used_size)  in cras_shm_check_write_offset()
105 		return shm->config.used_size;  in cras_shm_check_write_offset()
111 unsigned cras_shm_get_curr_read_frames(const struct cras_audio_shm *shm)  in cras_shm_get_curr_read_frames()  argument
113 	unsigned i = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_curr_read_frames()
117 		cras_shm_check_read_offset(shm, shm->area->read_offset[i]);  in cras_shm_get_curr_read_frames()
119 		cras_shm_check_write_offset(shm, shm->area->write_offset[i]);  in cras_shm_get_curr_read_frames()
124 		return (write_offset - read_offset) / shm->config.frame_bytes;  in cras_shm_get_curr_read_frames()
129 uint8_t *cras_shm_get_read_buffer_base(const struct cras_audio_shm *shm)  in cras_shm_get_read_buffer_base()  argument
131 	unsigned i = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_read_buffer_base()
132 	return cras_shm_buff_for_idx(shm, i);  in cras_shm_get_read_buffer_base()
137 uint8_t *cras_shm_get_write_buffer_base(const struct cras_audio_shm *shm)  in cras_shm_get_write_buffer_base()  argument
139 	unsigned i = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_write_buffer_base()
141 	return cras_shm_buff_for_idx(shm, i);  in cras_shm_get_write_buffer_base()
146 uint8_t *cras_shm_get_writeable_frames(const struct cras_audio_shm *shm,  in cras_shm_get_writeable_frames()  argument
150 	unsigned i = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_writeable_frames()
152 	const unsigned frame_bytes = shm->config.frame_bytes;  in cras_shm_get_writeable_frames()
154 	write_offset = cras_shm_check_write_offset(shm,  in cras_shm_get_writeable_frames()
155 						   shm->area->write_offset[i]);  in cras_shm_get_writeable_frames()
159 	return cras_shm_buff_for_idx(shm, i) + write_offset;  in cras_shm_get_writeable_frames()
167 uint8_t *cras_shm_get_readable_frames(const struct cras_audio_shm *shm,  in cras_shm_get_readable_frames()  argument
171 	unsigned buf_idx = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_readable_frames()
177 		cras_shm_check_read_offset(shm,  in cras_shm_get_readable_frames()
178 					   shm->area->read_offset[buf_idx]);  in cras_shm_get_readable_frames()
180 		cras_shm_check_write_offset(shm,  in cras_shm_get_readable_frames()
181 					    shm->area->write_offset[buf_idx]);  in cras_shm_get_readable_frames()
182 	final_offset = read_offset + offset * shm->config.frame_bytes;  in cras_shm_get_readable_frames()
188 				shm, shm->area->write_offset[buf_idx]);  in cras_shm_get_readable_frames()
195 	*frames = (write_offset - final_offset) / shm->config.frame_bytes;  in cras_shm_get_readable_frames()
196 	return cras_shm_buff_for_idx(shm, buf_idx) + final_offset;  in cras_shm_get_readable_frames()
200 static inline size_t cras_shm_get_bytes_queued(const struct cras_audio_shm *shm)  in cras_shm_get_bytes_queued()  argument
203 	const unsigned used_size = shm->config.used_size;  in cras_shm_get_bytes_queued()
209 		read_offset = MIN(shm->area->read_offset[i], used_size);  in cras_shm_get_bytes_queued()
210 		write_offset = MIN(shm->area->write_offset[i], used_size);  in cras_shm_get_bytes_queued()
219 static inline int cras_shm_get_frames(const struct cras_audio_shm *shm)  in cras_shm_get_frames()  argument
223 	bytes = cras_shm_get_bytes_queued(shm);  in cras_shm_get_frames()
224 	if (bytes % shm->config.frame_bytes != 0)  in cras_shm_get_frames()
226 	return bytes / shm->config.frame_bytes;  in cras_shm_get_frames()
231 size_t cras_shm_get_frames_in_curr_buffer(const struct cras_audio_shm *shm)  in cras_shm_get_frames_in_curr_buffer()  argument
233 	size_t buf_idx = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_get_frames_in_curr_buffer()
235 	const unsigned used_size = shm->config.used_size;  in cras_shm_get_frames_in_curr_buffer()
237 	read_offset = MIN(shm->area->read_offset[buf_idx], used_size);  in cras_shm_get_frames_in_curr_buffer()
238 	write_offset = MIN(shm->area->write_offset[buf_idx], used_size);  in cras_shm_get_frames_in_curr_buffer()
243 	return (write_offset - read_offset) / shm->config.frame_bytes;  in cras_shm_get_frames_in_curr_buffer()
247 static inline int cras_shm_is_buffer_available(const struct cras_audio_shm *shm)  in cras_shm_is_buffer_available()  argument
249 	size_t buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_is_buffer_available()
251 	return (shm->area->write_offset[buf_idx] == 0);  in cras_shm_is_buffer_available()
256 size_t cras_shm_get_num_writeable(const struct cras_audio_shm *shm)  in cras_shm_get_num_writeable()  argument
259 	if (!cras_shm_is_buffer_available(shm))  in cras_shm_get_num_writeable()
262 	return shm->config.used_size / shm->config.frame_bytes;  in cras_shm_get_num_writeable()
267 static inline int cras_shm_check_write_overrun(struct cras_audio_shm *shm)  in cras_shm_check_write_overrun()  argument
270 	size_t write_buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_check_write_overrun()
272 	if (!shm->area->write_in_progress[write_buf_idx]) {  in cras_shm_check_write_overrun()
273 		unsigned int used_size = shm->config.used_size;  in cras_shm_check_write_overrun()
275 		if (shm->area->write_offset[write_buf_idx]) {  in cras_shm_check_write_overrun()
276 			shm->area->num_overruns++; /* Will over-write unread */  in cras_shm_check_write_overrun()
280 		memset(cras_shm_buff_for_idx(shm, write_buf_idx), 0, used_size);  in cras_shm_check_write_overrun()
282 		shm->area->write_in_progress[write_buf_idx] = 1;  in cras_shm_check_write_overrun()
283 		shm->area->write_offset[write_buf_idx] = 0;  in cras_shm_check_write_overrun()
290 void cras_shm_buffer_written(struct cras_audio_shm *shm, size_t frames)  in cras_shm_buffer_written()  argument
292 	size_t buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_buffer_written()
297 	shm->area->write_offset[buf_idx] += frames * shm->config.frame_bytes;  in cras_shm_buffer_written()
298 	shm->area->read_offset[buf_idx] = 0;  in cras_shm_buffer_written()
303 unsigned int cras_shm_frames_written(const struct cras_audio_shm *shm)  in cras_shm_frames_written()  argument
305 	size_t buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_frames_written()
307 	return shm->area->write_offset[buf_idx] / shm->config.frame_bytes;  in cras_shm_frames_written()
311 static inline void cras_shm_buffer_write_complete(struct cras_audio_shm *shm)  in cras_shm_buffer_write_complete()  argument
313 	size_t buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_buffer_write_complete()
315 	shm->area->write_in_progress[buf_idx] = 0;  in cras_shm_buffer_write_complete()
319 	shm->area->write_buf_idx = buf_idx;  in cras_shm_buffer_write_complete()
324 void cras_shm_buffer_written_start(struct cras_audio_shm *shm, size_t frames)  in cras_shm_buffer_written_start()  argument
326 	size_t buf_idx = shm->area->write_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_buffer_written_start()
328 	shm->area->write_offset[buf_idx] = frames * shm->config.frame_bytes;  in cras_shm_buffer_written_start()
329 	shm->area->read_offset[buf_idx] = 0;  in cras_shm_buffer_written_start()
330 	cras_shm_buffer_write_complete(shm);  in cras_shm_buffer_written_start()
336 void cras_shm_buffer_read(struct cras_audio_shm *shm, size_t frames)  in cras_shm_buffer_read()  argument
338 	size_t buf_idx = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_buffer_read()
340 	struct cras_audio_shm_area *area = shm->area;  in cras_shm_buffer_read()
341 	struct cras_audio_shm_config *config = &shm->config;  in cras_shm_buffer_read()
371 void cras_shm_buffer_read_current(struct cras_audio_shm *shm, size_t frames)  in cras_shm_buffer_read_current()  argument
373 	size_t buf_idx = shm->area->read_buf_idx & CRAS_SHM_BUFFERS_MASK;  in cras_shm_buffer_read_current()
374 	struct cras_audio_shm_area *area = shm->area;  in cras_shm_buffer_read_current()
375 	struct cras_audio_shm_config *config = &shm->config;  in cras_shm_buffer_read_current()
389 void cras_shm_set_volume_scaler(struct cras_audio_shm *shm, float volume_scaler)  in cras_shm_set_volume_scaler()  argument
392 	shm->area->volume_scaler = MIN(volume_scaler, 1.0);  in cras_shm_set_volume_scaler()
396 static inline float cras_shm_get_volume_scaler(const struct cras_audio_shm *shm)  in cras_shm_get_volume_scaler()  argument
398 	return shm->area->volume_scaler;  in cras_shm_get_volume_scaler()
402 static inline void cras_shm_set_mute(struct cras_audio_shm *shm, size_t mute)  in cras_shm_set_mute()  argument
404 	shm->area->mute = !!mute;  in cras_shm_set_mute()
408 static inline size_t cras_shm_get_mute(const struct cras_audio_shm *shm)  in cras_shm_get_mute()  argument
410 	return shm->area->mute;  in cras_shm_get_mute()
414 static inline void cras_shm_set_frame_bytes(struct cras_audio_shm *shm,  in cras_shm_set_frame_bytes()  argument
417 	shm->config.frame_bytes = frame_bytes;  in cras_shm_set_frame_bytes()
418 	if (shm->area)  in cras_shm_set_frame_bytes()
419 		shm->area->config.frame_bytes = frame_bytes;  in cras_shm_set_frame_bytes()
423 static inline unsigned cras_shm_frame_bytes(const struct cras_audio_shm *shm)  in cras_shm_frame_bytes()  argument
425 	return shm->config.frame_bytes;  in cras_shm_frame_bytes()
430 void cras_shm_set_callback_pending(struct cras_audio_shm *shm, int pending)  in cras_shm_set_callback_pending()  argument
432 	shm->area->callback_pending = !!pending;  in cras_shm_set_callback_pending()
436 static inline int cras_shm_callback_pending(const struct cras_audio_shm *shm)  in cras_shm_callback_pending()  argument
438 	return shm->area->callback_pending;  in cras_shm_callback_pending()
445 void cras_shm_set_used_size(struct cras_audio_shm *shm, unsigned used_size)  in cras_shm_set_used_size()  argument
447 	shm->config.used_size = used_size;  in cras_shm_set_used_size()
448 	if (shm->area)  in cras_shm_set_used_size()
449 		shm->area->config.used_size = used_size;  in cras_shm_set_used_size()
453 static inline unsigned cras_shm_used_size(const struct cras_audio_shm *shm)  in cras_shm_used_size()  argument
455 	return shm->config.used_size;  in cras_shm_used_size()
459 static inline unsigned cras_shm_used_frames(const struct cras_audio_shm *shm)  in cras_shm_used_frames()  argument
461 	return shm->config.used_size / shm->config.frame_bytes;  in cras_shm_used_frames()
465 static inline unsigned cras_shm_total_size(const struct cras_audio_shm *shm)  in cras_shm_total_size()  argument
467 	return cras_shm_used_size(shm) * CRAS_NUM_SHM_BUFFERS +  in cras_shm_total_size()
468 			sizeof(*shm->area);  in cras_shm_total_size()
473 unsigned cras_shm_num_overruns(const struct cras_audio_shm *shm)  in cras_shm_num_overruns()  argument
475 	return shm->area->num_overruns;  in cras_shm_num_overruns()
481 static inline void cras_shm_copy_shared_config(struct cras_audio_shm *shm)  in cras_shm_copy_shared_config()  argument
483 	memcpy(&shm->config, &shm->area->config, sizeof(shm->config));  in cras_shm_copy_shared_config()