X-Git-Url: http://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=session_driver.c;h=fe0db3e6e0acbbf0ad5b808e4321b11fe8a48d35;hp=e4f6a9f424dfcdfdbe82d8a6642e44d9f55f92e8;hb=HEAD;hpb=123e13138385055003cb6bc09e74df783df5af85 diff --git a/session_driver.c b/session_driver.c deleted file mode 100644 index e4f6a9f4..00000000 --- a/session_driver.c +++ /dev/null @@ -1,281 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2010-2012 Bert Vermeulen - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include -#include -#include -#include -#include -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" - -/* Message logging helpers with driver-specific prefix string. */ -#define DRIVER_LOG_DOMAIN "virtual-session: " -#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) -#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) -#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) -#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) -#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) -#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) - -/* size of payloads sent across the session bus */ -/** @cond PRIVATE */ -#define CHUNKSIZE (512 * 1024) -/** @endcond */ - -struct session_vdev { - char *sessionfile; - char *capturefile; - struct zip *archive; - struct zip_file *capfile; - int bytes_read; - uint64_t samplerate; - int unitsize; - int num_probes; -}; - -static GSList *dev_insts = NULL; -static const int hwcaps[] = { - SR_CONF_CAPTUREFILE, - SR_CONF_CAPTURE_UNITSIZE, - 0, -}; - -static int receive_data(int fd, int revents, void *cb_data) -{ - struct sr_dev_inst *sdi; - struct session_vdev *vdev; - struct sr_datafeed_packet packet; - struct sr_datafeed_logic logic; - GSList *l; - void *buf; - int ret, got_data; - - (void)fd; - (void)revents; - - sr_dbg("Feed chunk."); - - got_data = FALSE; - for (l = dev_insts; l; l = l->next) { - sdi = l->data; - vdev = sdi->priv; - if (!vdev) - /* already done with this instance */ - continue; - - if (!(buf = g_try_malloc(CHUNKSIZE))) { - sr_err("%s: buf malloc failed", __func__); - return FALSE; - } - - ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); - if (ret > 0) { - got_data = TRUE; - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = ret; - logic.unitsize = vdev->unitsize; - logic.data = buf; - vdev->bytes_read += ret; - sr_session_send(cb_data, &packet); - } else { - /* done with this capture file */ - zip_fclose(vdev->capfile); - g_free(vdev->capturefile); - g_free(vdev); - sdi->priv = NULL; - } - } - - if (!got_data) { - packet.type = SR_DF_END; - sr_session_send(cb_data, &packet); - sr_session_source_remove(-1); - } - - return TRUE; -} - -/* driver callbacks */ -static int hw_cleanup(void); - -static int hw_init(struct sr_context *sr_ctx) -{ - (void)sr_ctx; - - return SR_OK; -} - -static int hw_cleanup(void) -{ - GSList *l; - - for (l = dev_insts; l; l = l->next) - sr_dev_inst_free(l->data); - g_slist_free(dev_insts); - dev_insts = NULL; - - return SR_OK; -} - -static int hw_dev_open(struct sr_dev_inst *sdi) -{ - if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { - sr_err("%s: sdi->priv malloc failed", __func__); - return SR_ERR_MALLOC; - } - - dev_insts = g_slist_append(dev_insts, sdi); - - return SR_OK; -} - -static int config_get(int id, const void **data, const struct sr_dev_inst *sdi) -{ - struct session_vdev *vdev; - - switch (id) { - case SR_DI_HWCAPS: - *data = hwcaps; - break; - case SR_CONF_SAMPLERATE: - if (sdi) { - vdev = sdi->priv; - *data = &vdev->samplerate; - } else - return SR_ERR; - break; - default: - return SR_ERR_ARG; - } - - return SR_OK; -} - -static int config_set(int id, const void *value, const struct sr_dev_inst *sdi) -{ - struct session_vdev *vdev; - const uint64_t *tmp_u64; - - vdev = sdi->priv; - - switch (id) { - case SR_CONF_SAMPLERATE: - tmp_u64 = value; - vdev->samplerate = *tmp_u64; - sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); - break; - case SR_CONF_SESSIONFILE: - vdev->sessionfile = g_strdup(value); - sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); - break; - case SR_CONF_CAPTUREFILE: - vdev->capturefile = g_strdup(value); - sr_info("Setting capturefile to '%s'.", vdev->capturefile); - break; - case SR_CONF_CAPTURE_UNITSIZE: - tmp_u64 = value; - vdev->unitsize = *tmp_u64; - break; - case SR_CONF_CAPTURE_NUM_PROBES: - tmp_u64 = value; - vdev->num_probes = *tmp_u64; - break; - default: - sr_err("Unknown capability: %d.", id); - return SR_ERR; - } - - return SR_OK; -} - -static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, - void *cb_data) -{ - struct zip_stat zs; - struct session_vdev *vdev; - struct sr_datafeed_header *header; - struct sr_datafeed_packet *packet; - int ret; - - vdev = sdi->priv; - - sr_info("Opening archive %s file %s", vdev->sessionfile, - vdev->capturefile); - - if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { - sr_err("Failed to open session file '%s': " - "zip error %d\n", vdev->sessionfile, ret); - return SR_ERR; - } - - if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { - sr_err("Failed to check capture file '%s' in " - "session file '%s'.", vdev->capturefile, vdev->sessionfile); - return SR_ERR; - } - - if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { - sr_err("Failed to open capture file '%s' in " - "session file '%s'.", vdev->capturefile, vdev->sessionfile); - return SR_ERR; - } - - /* freewheeling source */ - sr_session_source_add(-1, 0, 0, receive_data, cb_data); - - if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { - sr_err("%s: packet malloc failed", __func__); - return SR_ERR_MALLOC; - } - - if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { - sr_err("%s: header malloc failed", __func__); - return SR_ERR_MALLOC; - } - - /* Send header packet to the session bus. */ - packet->type = SR_DF_HEADER; - packet->payload = (unsigned char *)header; - header->feed_version = 1; - gettimeofday(&header->starttime, NULL); - sr_session_send(cb_data, packet); - - g_free(header); - g_free(packet); - - return SR_OK; -} - -/** @private */ -SR_PRIV struct sr_dev_driver session_driver = { - .name = "virtual-session", - .longname = "Session-emulating driver", - .api_version = 1, - .init = hw_init, - .cleanup = hw_cleanup, - .config_get = config_get, - .config_set = config_set, - .dev_open = hw_dev_open, - .dev_close = NULL, - .dev_acquisition_start = hw_dev_acquisition_start, - .dev_acquisition_stop = NULL, -};