X-Git-Url: http://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=session_driver.c;h=fe0db3e6e0acbbf0ad5b808e4321b11fe8a48d35;hp=9120ea14575b4f2e71fbfa3d0fcdfc28100b8467;hb=HEAD;hpb=102f12396660e0784134bccce5cc0679db325751 diff --git a/session_driver.c b/session_driver.c deleted file mode 100644 index 9120ea14..00000000 --- a/session_driver.c +++ /dev/null @@ -1,337 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2013 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" - -#define LOG_PREFIX "virtual-session" - -/* size of payloads sent across the session bus */ -/** @cond PRIVATE */ -#define CHUNKSIZE (512 * 1024) -/** @endcond */ - -SR_PRIV struct sr_dev_driver session_driver_info; -static struct sr_dev_driver *di = &session_driver_info; - -struct session_vdev { - char *sessionfile; - char *capturefile; - struct zip *archive; - struct zip_file *capfile; - int bytes_read; - uint64_t samplerate; - int unitsize; - int num_channels; - int cur_chunk; - gboolean finished; -}; - -static const int hwcaps[] = { - SR_CONF_CAPTUREFILE, - SR_CONF_CAPTURE_UNITSIZE, - SR_CONF_SAMPLERATE, -}; - -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; - struct zip_stat zs; - int ret, got_data; - char capturefile[16]; - void *buf; - - (void)fd; - (void)revents; - - sdi = cb_data; - got_data = FALSE; - vdev = sdi->priv; - if (!vdev->finished) { - if (!vdev->capfile) { - /* No capture file opened yet, or finished with the last - * chunked one. */ - if (vdev->cur_chunk == 0) { - /* capturefile is always the unchunked base name. */ - if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { - /* No chunks, just a single capture file. */ - vdev->cur_chunk = 0; - if (!(vdev->capfile = zip_fopen(vdev->archive, - vdev->capturefile, 0))) - return FALSE; - sr_dbg("Opened %s.", vdev->capturefile); - } else { - /* Try as first chunk filename. */ - snprintf(capturefile, 15, "%s-1", vdev->capturefile); - if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { - vdev->cur_chunk = 1; - if (!(vdev->capfile = zip_fopen(vdev->archive, - capturefile, 0))) - return FALSE; - sr_dbg("Opened %s.", capturefile); - } else { - sr_err("No capture file '%s' in " "session file '%s'.", - vdev->capturefile, vdev->sessionfile); - return FALSE; - } - } - } else { - /* Capture data is chunked, advance to the next chunk. */ - vdev->cur_chunk++; - snprintf(capturefile, 15, "%s-%d", vdev->capturefile, - vdev->cur_chunk); - if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { - if (!(vdev->capfile = zip_fopen(vdev->archive, - capturefile, 0))) - return FALSE; - sr_dbg("Opened %s.", capturefile); - } else { - /* We got all the chunks, finish up. */ - vdev->finished = TRUE; - return TRUE; - } - } - } - - if (!(buf = g_try_malloc(CHUNKSIZE))) { - sr_err("%s: buf malloc failed", __func__); - return FALSE; - } - - ret = zip_fread(vdev->capfile, buf, - CHUNKSIZE / vdev->unitsize * vdev->unitsize); - if (ret > 0) { - if (ret % vdev->unitsize != 0) - sr_warn("Read size %d not a multiple of the" - " unit size %d.", ret, vdev->unitsize); - 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(sdi, &packet); - } else { - /* done with this capture file */ - zip_fclose(vdev->capfile); - vdev->capfile = NULL; - if (vdev->cur_chunk == 0) { - /* It was the only file. */ - vdev->finished = TRUE; - } else { - /* There might be more chunks, so don't fall through - * to the SR_DF_END here. */ - g_free(buf); - return TRUE; - } - } - g_free(buf); - } - - if (!got_data) { - packet.type = SR_DF_END; - sr_session_send(sdi, &packet); - sr_session_source_remove(sdi->session, -1); - } - - return TRUE; -} - -/* driver callbacks */ - -static int init(struct sr_context *sr_ctx) -{ - return std_init(sr_ctx, di, LOG_PREFIX); -} - -static int dev_clear(void) -{ - struct drv_context *drvc; - GSList *l; - - drvc = di->priv; - for (l = drvc->instances; l; l = l->next) - sr_dev_inst_free(l->data); - g_slist_free(drvc->instances); - drvc->instances = NULL; - - return SR_OK; -} - -static int dev_open(struct sr_dev_inst *sdi) -{ - struct drv_context *drvc; - struct session_vdev *vdev; - - drvc = di->priv; - vdev = g_malloc0(sizeof(struct session_vdev)); - sdi->priv = vdev; - drvc->instances = g_slist_append(drvc->instances, sdi); - - return SR_OK; -} - -static int dev_close(struct sr_dev_inst *sdi) -{ - const struct session_vdev *const vdev = sdi->priv; - g_free(vdev->sessionfile); - g_free(vdev->capturefile); - - g_free(sdi->priv); - sdi->priv = NULL; - - return SR_OK; -} - -static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - struct session_vdev *vdev; - - (void)cg; - - switch (id) { - case SR_CONF_SAMPLERATE: - if (sdi) { - vdev = sdi->priv; - *data = g_variant_new_uint64(vdev->samplerate); - } else - return SR_ERR; - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - struct session_vdev *vdev; - - (void)cg; - - vdev = sdi->priv; - - switch (id) { - case SR_CONF_SAMPLERATE: - vdev->samplerate = g_variant_get_uint64(data); - sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); - break; - case SR_CONF_SESSIONFILE: - g_free(vdev->sessionfile); - vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); - sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); - break; - case SR_CONF_CAPTUREFILE: - g_free(vdev->capturefile); - vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); - sr_info("Setting capturefile to '%s'.", vdev->capturefile); - break; - case SR_CONF_CAPTURE_UNITSIZE: - vdev->unitsize = g_variant_get_uint64(data); - break; - case SR_CONF_NUM_LOGIC_CHANNELS: - vdev->num_channels = g_variant_get_uint64(data); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - (void)sdi; - (void)cg; - - switch (key) { - case SR_CONF_DEVICE_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, - hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) -{ - struct session_vdev *vdev; - int ret; - - (void)cb_data; - - vdev = sdi->priv; - vdev->bytes_read = 0; - vdev->cur_chunk = 0; - vdev->finished = FALSE; - - 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.", vdev->sessionfile, ret); - return SR_ERR; - } - - /* Send header packet to the session bus. */ - std_session_send_df_header(sdi, LOG_PREFIX); - - /* freewheeling source */ - sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); - - return SR_OK; -} - -/** @private */ -SR_PRIV struct sr_dev_driver session_driver = { - .name = "virtual-session", - .longname = "Session-emulating driver", - .api_version = 1, - .init = init, - .cleanup = dev_clear, - .scan = NULL, - .dev_list = NULL, - .dev_clear = dev_clear, - .config_get = config_get, - .config_set = config_set, - .config_list = config_list, - .dev_open = dev_open, - .dev_close = dev_close, - .dev_acquisition_start = dev_acquisition_start, - .dev_acquisition_stop = NULL, - .priv = NULL, -};