include/sound/pcm-indirect.h

28 					struct snd_pcm_indirect *rec, size_t bytes);
35 				   struct snd_pcm_indirect *rec,
40 	snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
48 		rec->sw_ready += (int)frames_to_bytes(runtime, diff);
49 		rec->appl_ptr = appl_ptr;
51 	qsize = rec->hw_queue_size ? rec->hw_queue_size : rec->hw_buffer_size;
52 	while (rec->hw_ready < qsize && rec->sw_ready > 0) {
53 		unsigned int hw_to_end = rec->hw_buffer_size - rec->hw_data;
54 		unsigned int sw_to_end = rec->sw_buffer_size - rec->sw_data;
55 		unsigned int bytes = qsize - rec->hw_ready;
56 		if (rec->sw_ready < (int)bytes)
57 			bytes = rec->sw_ready;
64 		copy(substream, rec, bytes);
65 		rec->hw_data += bytes;
66 		if (rec->hw_data == rec->hw_buffer_size)
67 			rec->hw_data = 0;
68 		rec->sw_data += bytes;
69 		if (rec->sw_data == rec->sw_buffer_size)
70 			rec->sw_data = 0;
71 		rec->hw_ready += bytes;
72 		rec->sw_ready -= bytes;
83 				  struct snd_pcm_indirect *rec, unsigned int ptr)
85 	int bytes = ptr - rec->hw_io;
89 		bytes += rec->hw_buffer_size;
90 	rec->hw_io = ptr;
91 	rec->hw_ready -= bytes;
92 	rec->sw_io += bytes;
93 	if (rec->sw_io >= rec->sw_buffer_size)
94 		rec->sw_io -= rec->sw_buffer_size;
100 	return bytes_to_frames(substream->runtime, rec->sw_io);
109 				  struct snd_pcm_indirect *rec,
114 	snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
121 		rec->sw_ready -= frames_to_bytes(runtime, diff);
122 		rec->appl_ptr = appl_ptr;
124 	while (rec->hw_ready > 0 &&
125 	       rec->sw_ready < (int)rec->sw_buffer_size) {
126 		size_t hw_to_end = rec->hw_buffer_size - rec->hw_data;
127 		size_t sw_to_end = rec->sw_buffer_size - rec->sw_data;
128 		size_t bytes = rec->sw_buffer_size - rec->sw_ready;
129 		if (rec->hw_ready < (int)bytes)
130 			bytes = rec->hw_ready;
137 		copy(substream, rec, bytes);
138 		rec->hw_data += bytes;
139 		if ((int)rec->hw_data == rec->hw_buffer_size)
140 			rec->hw_data = 0;
141 		rec->sw_data += bytes;
142 		if (rec->sw_data == rec->sw_buffer_size)
143 			rec->sw_data = 0;
144 		rec->hw_ready -= bytes;
145 		rec->sw_ready += bytes;
156 				 struct snd_pcm_indirect *rec, unsigned int ptr)
159 	int bytes = ptr - rec->hw_io;
163 		bytes += rec->hw_buffer_size;
164 	rec->hw_io = ptr;
165 	rec->hw_ready += bytes;
166 	qsize = rec->hw_queue_size ? rec->hw_queue_size : rec->hw_buffer_size;
167 	if (rec->hw_ready > qsize)
169 	rec->sw_io += bytes;
170 	if (rec->sw_io >= rec->sw_buffer_size)
171 		rec->sw_io -= rec->sw_buffer_size;
177 	return bytes_to_frames(substream->runtime, rec->sw_io);