2 * Copyright (C) 2011-2013 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file afh_recv.c Receiver for streaming local files. */
10 #include <sys/types.h>
18 #include "buffer_tree.h"
20 #include "afh_recv.cmdline.h"
25 struct private_afh_recv_data {
31 long unsigned first_chunk;
32 long unsigned last_chunk;
33 struct timeval stream_start;
34 uint32_t current_chunk;
37 static int afh_execute(struct btr_node *btrn, const char *cmd, char **result)
39 struct receiver_node *rn = btr_context(btrn);
40 struct private_afh_recv_data *pard = rn->private_data;
43 if (!strcmp(cmd, "seconds_total")) {
44 *result = make_message("%lu", pard->afhi.seconds_total);
47 if (!strcmp(cmd, "chunks_total")) {
48 *result = make_message("%lu", pard->afhi.chunks_total);
51 if (!strcmp(cmd, "afhi")) {
52 afh_get_afhi_txt(pard->audio_format_num, &pard->afhi, result);
55 if (!strncmp(cmd, "repos", 5)) {
57 int ret = para_atoi32(cmd + 5, &x);
60 if (x >= pard->afhi.chunks_total)
61 return -ERRNO_TO_PARA_ERROR(EINVAL);
62 pard->first_chunk = pard->current_chunk = x;
69 static void *afh_recv_parse_config(int argc, char **argv)
71 struct afh_recv_args_info *tmp = para_calloc(sizeof(*tmp));
73 afh_recv_cmdline_parser(argc, argv, tmp);
77 static void afh_recv_free_config(void *conf)
81 afh_recv_cmdline_parser_free(conf);
85 static int afh_recv_open(struct receiver_node *rn)
87 struct afh_recv_args_info *conf = rn->conf;
88 struct private_afh_recv_data *pard;
89 struct afh_info *afhi;
90 char *filename = conf->filename_arg;
94 if (!filename || *filename == '\0')
95 return -E_AFH_RECV_BAD_FILENAME;
96 rn->private_data = pard = para_calloc(sizeof(*pard));
98 ret = mmap_full_file(filename, O_RDONLY, &pard->map,
99 &pard->map_size, &pard->fd);
102 ret = compute_afhi(filename, pard->map, pard->map_size,
106 pard->audio_format_num = ret;
107 ret = -ERRNO_TO_PARA_ERROR(EINVAL);
108 if (afhi->chunks_total == 0)
110 if (PARA_ABS(conf->begin_chunk_arg) >= afhi->chunks_total)
112 if (conf->begin_chunk_arg >= 0)
113 pard->first_chunk = conf->begin_chunk_arg;
115 pard->first_chunk = afhi->chunks_total + conf->begin_chunk_arg;
116 if (conf->end_chunk_given) {
117 ret = -ERRNO_TO_PARA_ERROR(EINVAL);
118 if (PARA_ABS(conf->end_chunk_arg) > afhi->chunks_total)
120 if (conf->end_chunk_arg >= 0)
121 pard->last_chunk = conf->end_chunk_arg;
123 pard->last_chunk = afhi->chunks_total + conf->end_chunk_arg;
125 pard->last_chunk = afhi->chunks_total - 1;
126 ret = -ERRNO_TO_PARA_ERROR(EINVAL);
127 if (pard->first_chunk >= pard->last_chunk)
129 pard->current_chunk = pard->first_chunk;
130 return pard->audio_format_num;
134 para_munmap(pard->map, pard->map_size);
137 freep(&rn->private_data);
141 static void afh_recv_close(struct receiver_node *rn)
143 struct private_afh_recv_data *pard;
145 if (!rn || !rn->private_data)
147 pard = rn->private_data;
148 clear_afhi(&pard->afhi);
149 para_munmap(pard->map, pard->map_size);
151 freep(&rn->private_data);
154 static void afh_recv_pre_select(struct sched *s, struct task *t)
156 struct receiver_node *rn = container_of(t, struct receiver_node, task);
157 struct private_afh_recv_data *pard = rn->private_data;
158 struct afh_info *afhi = &pard->afhi;
159 struct afh_recv_args_info *conf = rn->conf;
160 struct timeval chunk_time;
161 int state = generic_recv_pre_select(s, t);
165 if (!conf->just_in_time_given) {
169 compute_chunk_time(pard->current_chunk - pard->first_chunk,
170 &afhi->chunk_tv, &pard->stream_start, &chunk_time);
171 sched_request_barrier_or_min_delay(&chunk_time, s);
174 static int afh_recv_post_select(__a_unused struct sched *s, struct task *t)
176 struct receiver_node *rn = container_of(t, struct receiver_node, task);
177 struct afh_recv_args_info *conf = rn->conf;
178 struct private_afh_recv_data *pard = rn->private_data;
179 struct btr_node *btrn = rn->btrn;
180 struct afh_info *afhi = &pard->afhi;
183 const char *start, *end;
185 struct timeval chunk_time;
187 ret = btr_node_status(btrn, 0, BTR_NT_ROOT);
190 if (pard->first_chunk > 0 && !conf->no_header_given) {
192 afh_get_header(afhi, pard->audio_format_num, pard->map,
193 pard->map_size, &header, &size);
195 PARA_INFO_LOG("writing header (%zu bytes)\n", size);
196 buf = para_malloc(size);
197 memcpy(buf, header, size);
198 btr_add_output(buf, size, btrn);
199 afh_free_header(header, pard->audio_format_num);
202 if (!conf->just_in_time_given) {
203 afh_get_chunk(pard->first_chunk, afhi, pard->map, &start, &size);
204 afh_get_chunk(pard->last_chunk, afhi, pard->map, &end, &size);
206 PARA_INFO_LOG("adding %zu bytes\n", end - start);
207 btr_add_output_dont_free(start, end - start, btrn);
211 if (pard->current_chunk == pard->first_chunk)
212 pard->stream_start = *now;
214 compute_chunk_time(pard->current_chunk - pard->first_chunk,
215 &afhi->chunk_tv, &pard->stream_start, &chunk_time);
216 ret = tv_diff(&chunk_time, now, NULL);
220 afh_get_chunk(pard->current_chunk, afhi, pard->map, &start, &size);
221 PARA_DEBUG_LOG("adding chunk %u\n", pard->current_chunk);
222 btr_add_output_dont_free(start, size, btrn);
223 if (pard->current_chunk >= pard->last_chunk) {
227 pard->current_chunk++;
231 btr_remove_node(&rn->btrn);
232 pard->current_chunk = pard->first_chunk;
238 * The init function of the afh receiver.
240 * \param r Pointer to the receiver struct to initialize.
242 * This initializes all function pointers of \a r.
244 void afh_recv_init(struct receiver *r)
246 struct afh_recv_args_info dummy;
249 afh_recv_cmdline_parser_init(&dummy);
250 r->open = afh_recv_open;
251 r->close = afh_recv_close;
252 r->pre_select = afh_recv_pre_select;
253 r->post_select = afh_recv_post_select;
254 r->parse_config = afh_recv_parse_config;
255 r->free_config = afh_recv_free_config;
256 r->execute = afh_execute;
257 r->help = (struct ggo_help)DEFINE_GGO_HELP(afh_recv);
258 afh_recv_cmdline_parser_free(&dummy);