+/* Copyright (C) 2011 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
+
+/** \file afh_recv.c Receiver for streaming local files. */
+
#include <regex.h>
#include <sys/types.h>
-#include <stdbool.h>
+#include <lopsub.h>
+#include "recv_cmd.lsg.h"
#include "para.h"
#include "error.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
#include "buffer_tree.h"
#include "recv.h"
-#include "afh_recv.cmdline.h"
#include "string.h"
#include "fd.h"
+#include "afh.h"
+
+struct private_afh_recv_data {
+ int fd;
+ void *map;
+ size_t map_size;
+ struct afh_info afhi;
+ int audio_format_num;
+ long unsigned first_chunk;
+ long unsigned last_chunk;
+ struct timeval stream_start;
+ uint32_t current_chunk;
+ void *afh_context;
+};
-/**
- * The init function of the afh receiver.
- *
- * \param r Pointer to the receiver struct to initialize.
- *
- * This initializes all function pointers of \a r.
- */
-void afh_recv_init(struct receiver *r)
+static int afh_execute(struct btr_node *btrn, const char *cmd, char **result)
{
- struct afh_recv_args_info dummy;
-
- afh_recv_cmdline_parser_init(&dummy);
-#if 0
- r->open = afh_recv_open;
- r->close = afh_recv_close;
- r->pre_select = afh_recv_pre_select;
- r->post_select = afh_recv_post_select;
- r->parse_config = afh_recv_parse_config;
- r->free_config = afh_recv_free_config;
-#endif
- r->help = (struct ggo_help) {
- .short_help = afh_recv_args_info_help,
- .detailed_help = afh_recv_args_info_detailed_help
- };
- afh_recv_cmdline_parser_free(&dummy);
+ struct receiver_node *rn = btr_context(btrn);
+ struct private_afh_recv_data *pard = rn->private_data;
+
+ *result = NULL;
+ if (!strcmp(cmd, "seconds_total")) {
+ *result = make_message("%" PRIu32, pard->afhi.seconds_total);
+ return 1;
+ }
+ if (!strcmp(cmd, "chunks_total")) {
+ *result = make_message("%" PRIu32, pard->afhi.chunks_total);
+ return 1;
+ }
+ if (!strcmp(cmd, "afhi")) {
+ afh_get_afhi_txt(pard->audio_format_num, &pard->afhi, result);
+ return 1;
+ }
+ if (!strncmp(cmd, "repos", 5)) {
+ int32_t x;
+ int ret = para_atoi32(cmd + 5, &x);
+ if (ret < 0)
+ return ret;
+ if (x >= pard->afhi.chunks_total)
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ pard->first_chunk = afh_get_start_chunk(x, &pard->afhi,
+ pard->audio_format_num);
+ pard->current_chunk = pard->first_chunk;
+ return 1;
+ }
+ return -E_BTR_NAVAIL;
}
+
+static int afh_recv_open(struct receiver_node *rn)
+{
+ struct lls_parse_result *lpr = rn->lpr;
+ struct private_afh_recv_data *pard;
+ struct afh_info *afhi;
+ const char *fn = RECV_CMD_OPT_STRING_VAL(AFH, FILENAME, lpr), *msg;
+ int32_t bc = RECV_CMD_OPT_INT32_VAL(AFH, BEGIN_CHUNK, lpr);
+ const struct lls_opt_result *r_e = RECV_CMD_OPT_RESULT(AFH, END_CHUNK, lpr);
+ int ret;
+
+ if (!fn || *fn == '\0')
+ return -E_AFH_RECV_BAD_FILENAME;
+ rn->private_data = pard = para_calloc(sizeof(*pard));
+ afhi = &pard->afhi;
+ ret = mmap_full_file(fn, O_RDONLY, &pard->map,
+ &pard->map_size, &pard->fd);
+ if (ret < 0)
+ goto out;
+ ret = compute_afhi(fn, pard->map, pard->map_size,
+ pard->fd, afhi);
+ if (ret < 0)
+ goto out_unmap;
+ pard->audio_format_num = ret;
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+ msg = "no data chunks";
+ if (afhi->chunks_total == 0)
+ goto out_clear_afhi;
+ msg = "invalid begin chunk";
+ if (PARA_ABS(bc) >= afhi->chunks_total)
+ goto out_clear_afhi;
+ if (bc >= 0)
+ pard->first_chunk = afh_get_start_chunk(bc, &pard->afhi,
+ pard->audio_format_num);
+ else
+ pard->first_chunk = afh_get_start_chunk(afhi->chunks_total + bc,
+ &pard->afhi, pard->audio_format_num);
+ if (lls_opt_given(r_e)) {
+ int32_t ec = lls_int32_val(0, r_e);
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+ msg = "invalid end chunk";
+ if (PARA_ABS(ec) > afhi->chunks_total)
+ goto out_clear_afhi;
+ if (ec >= 0)
+ pard->last_chunk = ec;
+ else
+ pard->last_chunk = afhi->chunks_total + ec;
+ } else
+ pard->last_chunk = afhi->chunks_total - 1;
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+ msg = "begin chunk >= end chunk!?";
+ if (pard->first_chunk >= pard->last_chunk)
+ goto out_clear_afhi;
+ pard->current_chunk = pard->first_chunk;
+ return pard->audio_format_num;
+out_clear_afhi:
+ clear_afhi(afhi);
+ PARA_ERROR_LOG("%s: %s\n", fn, msg);
+out_unmap:
+ para_munmap(pard->map, pard->map_size);
+ close(pard->fd);
+out:
+ freep(&rn->private_data);
+ return ret;
+}
+
+static void afh_recv_close(struct receiver_node *rn)
+{
+ struct private_afh_recv_data *pard;
+
+ if (!rn || !rn->private_data)
+ return;
+ pard = rn->private_data;
+ clear_afhi(&pard->afhi);
+ para_munmap(pard->map, pard->map_size);
+ close(pard->fd);
+ afh_close(pard->afh_context, pard->audio_format_num);
+ freep(&rn->private_data);
+}
+
+static void afh_recv_pre_select(struct sched *s, void *context)
+{
+ struct receiver_node *rn = context;
+ struct private_afh_recv_data *pard = rn->private_data;
+ struct afh_info *afhi = &pard->afhi;
+ struct lls_parse_result *lpr = rn->lpr;
+ struct timeval chunk_time;
+ int state = generic_recv_pre_select(s, rn);
+ unsigned j_given = RECV_CMD_OPT_GIVEN(AFH, JUST_IN_TIME, lpr);
+
+ if (state <= 0)
+ return;
+ if (!j_given) {
+ sched_min_delay(s);
+ return;
+ }
+ compute_chunk_time(pard->current_chunk - pard->first_chunk,
+ &afhi->chunk_tv, &pard->stream_start, &chunk_time);
+ sched_request_barrier_or_min_delay(&chunk_time, s);
+}
+
+static int afh_recv_post_select(__a_unused struct sched *s, void *context)
+{
+ struct receiver_node *rn = context;
+ struct lls_parse_result *lpr = rn->lpr;
+ struct private_afh_recv_data *pard = rn->private_data;
+ struct btr_node *btrn = rn->btrn;
+ struct afh_info *afhi = &pard->afhi;
+ int ret;
+ char *buf;
+ const char *start;
+ size_t size;
+ struct timeval chunk_time;
+ unsigned j_given = RECV_CMD_OPT_GIVEN(AFH, JUST_IN_TIME, lpr);
+ unsigned H_given = RECV_CMD_OPT_GIVEN(AFH, NO_HEADER, lpr);
+
+ ret = btr_node_status(btrn, 0, BTR_NT_ROOT);
+ if (ret <= 0)
+ goto out;
+ if (pard->first_chunk > 0 && !H_given) {
+ char *header;
+ afh_get_header(afhi, pard->audio_format_num, pard->map,
+ pard->map_size, &header, &size);
+ if (size > 0) {
+ PARA_INFO_LOG("writing header (%zu bytes)\n", size);
+ buf = para_malloc(size);
+ memcpy(buf, header, size);
+ btr_add_output(buf, size, btrn);
+ afh_free_header(header, pard->audio_format_num);
+ }
+ }
+ if (!j_given) {
+ long unsigned n;
+ for (n = pard->first_chunk; n < pard->last_chunk; n++) {
+ ret = afh_get_chunk(n, afhi, pard->audio_format_num,
+ pard->map, pard->map_size, &start, &size,
+ &pard->afh_context);
+ if (ret < 0)
+ goto out;
+ PARA_DEBUG_LOG("adding %zu bytes\n", size);
+ btr_add_output_dont_free(start, size, btrn);
+ }
+ ret = -E_RECV_EOF;
+ goto out;
+ }
+ if (pard->current_chunk == pard->first_chunk)
+ pard->stream_start = *now;
+ else {
+ compute_chunk_time(pard->current_chunk - pard->first_chunk,
+ &afhi->chunk_tv, &pard->stream_start, &chunk_time);
+ ret = tv_diff(&chunk_time, now, NULL);
+ if (ret > 0)
+ goto out;
+ }
+ ret = afh_get_chunk(pard->current_chunk, afhi,
+ pard->audio_format_num, pard->map,
+ pard->map_size, &start, &size,
+ &pard->afh_context);
+ if (ret < 0)
+ goto out;
+ PARA_DEBUG_LOG("adding chunk %u\n", pard->current_chunk);
+ btr_add_output_dont_free(start, size, btrn);
+ if (pard->current_chunk >= pard->last_chunk) {
+ ret = -E_RECV_EOF;
+ goto out;
+ }
+ pard->current_chunk++;
+ ret = 1;
+out:
+ if (ret < 0) {
+ btr_remove_node(&rn->btrn);
+ pard->current_chunk = pard->first_chunk;
+ }
+ return ret;
+}
+
+/** See \ref recv_init(). */
+const struct receiver lsg_recv_cmd_com_afh_user_data = {
+ .init = afh_init,
+ .open = afh_recv_open,
+ .close = afh_recv_close,
+ .pre_select = afh_recv_pre_select,
+ .post_select = afh_recv_post_select,
+ .execute = afh_execute,
+};
projects / paraslash.git / blobdiff