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/* SPDX-License-Identifier: GPL-2.0 */
/** \file afh_recv.c Receiver for streaming local files. */
#include <sys/types.h>
#include <lopsub.h>
#include "recv_cmd.lsg.h"
#include "para.h"
#include "error.h"
#include "list.h"
#include "sched.h"
#include "buffer_tree.h"
#include "recv.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;
};
static int afh_execute(const struct btr_node *btrn, const char *cmd, char **result)
{
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 = zalloc(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, 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_monitor(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_monitor(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_monitor(__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;
uint32_t len;
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 = alloc(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, &len,
&pard->afh_context);
if (ret < 0)
goto out;
PARA_DEBUG_LOG("adding %u bytes\n", len);
btr_add_output_dont_free(start, len, btrn);
}
ret = -E_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, &len,
&pard->afh_context);
if (ret < 0)
goto out;
PARA_DEBUG_LOG("adding chunk %u\n", pard->current_chunk);
btr_add_output_dont_free(start, len, btrn);
if (pard->current_chunk >= pard->last_chunk) {
ret = -E_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;
}
/** \cond doxygen_ignore */
const struct receiver lsg_recv_cmd_com_afh_user_data = {
.open = afh_recv_open,
.close = afh_recv_close,
.pre_monitor = afh_recv_pre_monitor,
.post_monitor = afh_recv_post_monitor,
.execute = afh_execute,
};
/** \endcond */
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