Move binaries to bin and make ring buffer a lib

5 files changed, 829 insertions, 0 deletions

diff --git a/bin/tools/CMakeLists.txt b/bin/tools/CMakeLists.txt
new file mode 100644
index 0000000..a52bb97
--- /dev/null
+++ b/bin/tools/CMakeLists.txt
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 2.8)
+
+add_definitions("--std=c99 -Wall")
+
+# --- Find packages and libraries ---------------------------------------------
+find_package(TIFF)
+
+# --- Build targets -----------------------------------------------------------
+include_directories(
+    ${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+
+set(libs uca)
+
+if (TIFF_FOUND)
+    set(HAVE_LIBTIFF "1")
+    list(APPEND libs ${TIFF_LIBRARIES})
+    include_directories(${TIFF_INCLUDE_DIRS})
+endif ()
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
+               ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+
+# --- gen-doc
+add_executable(gen-doc gen-doc.c)
+target_link_libraries(gen-doc ${libs})
+
+# --- uca-grab
+add_executable(uca-grab grab.c)
+target_link_libraries(uca-grab
+                      ringbuffer
+                      ${libs})
+
+# --- uca-benchmark
+add_executable(benchmark benchmark.c)
+target_link_libraries(benchmark ${libs})
+
+install(TARGETS uca-grab
+        RUNTIME DESTINATION bin)
diff --git a/bin/tools/benchmark.c b/bin/tools/benchmark.c
new file mode 100644
index 0000000..0939d78
--- /dev/null
+++ b/bin/tools/benchmark.c
@@ -0,0 +1,272 @@
+/* Copyright (C) 2011, 2012 Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
+   (Karlsruhe Institute of Technology)
+
+   This library is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published by the
+   Free Software Foundation; either version 2.1 of the License, or (at your
+   option) any later version.
+
+   This library 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 Lesser General Public License for more
+   details.
+
+   You should have received a copy of the GNU Lesser General Public License along
+   with this library; if not, write to the Free Software Foundation, Inc., 51
+   Franklin St, Fifth Floor, Boston, MA 02110, USA */
+
+#include <glib-object.h>
+#include <signal.h>
+#include <string.h>
+#include <stdlib.h>
+#include "uca-camera.h"
+#include "uca-plugin-manager.h"
+
+typedef void (*GrabFrameFunc) (UcaCamera *camera, gpointer buffer, guint n_frames);
+
+static UcaCamera *camera = NULL;
+
+static void
+sigint_handler(int signal)
+{
+    g_print ("Closing down libuca\n");
+    uca_camera_stop_recording (camera, NULL);
+    g_object_unref (camera);
+    exit (signal);
+}
+
+static void
+print_usage (void)
+{
+    GList *types;
+    UcaPluginManager *manager;
+
+    manager = uca_plugin_manager_new ();
+    g_print ("Usage: benchmark [ ");
+    types = uca_plugin_manager_get_available_cameras (manager);
+
+    if (types == NULL) {
+        g_print ("] -- no camera plugin found\n");
+        return;
+    }
+
+    for (GList *it = g_list_first (types); it != NULL; it = g_list_next (it)) {
+        gchar *name = (gchar *) it->data;
+        if (g_list_next (it) == NULL)
+            g_print ("%s ]\n", name);
+        else
+            g_print ("%s, ", name);
+    }
+}
+
+static void
+log_handler (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer user)
+{
+    gsize       n_written;
+    GError     *error = NULL;
+    GIOChannel *channel = user;
+
+#if GLIB_CHECK_VERSION(2, 26, 0)
+    GTimeZone  *tz;
+    GDateTime  *date_time;
+    gchar      *new_message;
+
+    tz = g_time_zone_new_local ();
+    date_time = g_date_time_new_now (tz);
+
+    new_message = g_strdup_printf ("[%s] %s\n",
+                                   g_date_time_format (date_time, "%FT%H:%M:%S%z"), message);
+
+    g_time_zone_unref (tz);
+    g_date_time_unref (date_time);
+
+    g_io_channel_write_chars (channel, new_message, strlen (new_message), &n_written, &error);
+    g_assert_no_error (error);
+    g_free (new_message);
+#else
+    g_io_channel_write_chars (channel, message, strlen (message), &n_written, &error);
+    g_assert_no_error (error);
+#endif
+
+    g_io_channel_flush (channel, &error);
+    g_assert_no_error (error);
+}
+
+static void
+grab_frames_sync (UcaCamera *camera, gpointer buffer, guint n_frames)
+{
+    GError *error = NULL;
+
+    uca_camera_start_recording (camera, &error);
+
+    for (guint i = 0; i < n_frames; i++) {
+        if (!uca_camera_grab (camera, buffer, &error))
+            g_warning ("Data stream ended");
+
+        if (error != NULL) {
+            g_warning ("Error grabbing frame %02i/%i: `%s'", i, n_frames, error->message);
+            g_error_free (error);
+            error = NULL;
+        }
+    }
+
+    uca_camera_stop_recording (camera, &error);
+}
+
+static void
+grab_callback (gpointer data, gpointer user_data)
+{
+    static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
+    guint *n_acquired_frames = user_data;
+
+    g_static_mutex_lock (&mutex);
+    *n_acquired_frames += 1;
+    g_static_mutex_unlock (&mutex);
+}
+
+static void
+grab_frames_async (UcaCamera *camera, gpointer buffer, guint n_frames)
+{
+    GError *error = NULL;
+    guint n_acquired_frames = 0;
+
+    uca_camera_set_grab_func (camera, grab_callback, &n_acquired_frames);
+    uca_camera_start_recording (camera, &error);
+
+    /*
+     * Behold! Spinlooping is probably a bad idea but nowadays single core
+     * machines are relatively rare.
+     */
+    while (n_acquired_frames < n_frames)
+        ;
+
+    uca_camera_stop_recording (camera, &error);
+}
+
+static void
+benchmark_method (UcaCamera *camera, gpointer buffer, GrabFrameFunc func, guint n_runs, guint n_frames, guint n_bytes)
+{
+    GTimer *timer;
+    gdouble fps;
+    gdouble bandwidth;
+    gdouble total_time = 0.0;
+    GError *error = NULL;
+
+    g_print ("%-10i%-10i", n_frames, n_runs);
+    timer = g_timer_new ();
+    g_assert_no_error (error);
+
+    for (guint run = 0; run < n_runs; run++) {
+        g_message ("Start run %i of %i", run, n_runs);
+        g_timer_start (timer);
+
+        func (camera, buffer, n_frames);
+
+        g_timer_stop (timer);
+        total_time += g_timer_elapsed (timer, NULL);
+    }
+
+    g_assert_no_error (error);
+
+    fps = n_runs * n_frames / total_time;
+    bandwidth = n_bytes * fps / 1024 / 1024;
+    g_print ("%-16.2f%-16.2f\n", fps, bandwidth);
+
+    g_timer_destroy (timer);
+}
+
+static void
+benchmark (UcaCamera *camera)
+{
+    const guint n_runs = 3;
+    const guint n_frames = 100;
+
+    guint   sensor_width;
+    guint   sensor_height;
+    guint   roi_width;
+    guint   roi_height;
+    guint   bits;
+    guint   n_bytes_per_pixel;
+    guint   n_bytes;
+    gdouble exposure = 0.00001;
+    gpointer buffer;
+
+    g_object_set (G_OBJECT (camera),
+                  "exposure-time", exposure,
+                  NULL);
+
+    g_object_get (G_OBJECT (camera),
+                  "sensor-width", &sensor_width,
+                  "sensor-height", &sensor_height,
+                  "sensor-bitdepth", &bits,
+                  "roi-width", &roi_width,
+                  "roi-height", &roi_height,
+                  "exposure-time", &exposure,
+                  NULL);
+
+    g_print ("# --- General information ---\n");
+    g_print ("# Sensor size: %ix%i\n", sensor_width, sensor_height);
+    g_print ("# ROI size: %ix%i\n", roi_width, roi_height);
+    g_print ("# Exposure time: %fs\n", exposure);
+    g_print ("# Bits: %i\n", bits);
+
+    /* Synchronous frame acquisition */
+    g_print ("# %-10s%-10s%-10s%-16s%-16s\n", "type", "n_frames", "n_runs", "frames/s", "MiB/s");
+    g_print ("  %-10s", "sync");
+
+    g_message ("Start synchronous benchmark");
+
+    n_bytes_per_pixel = bits > 8 ? 2 : 1;
+    n_bytes = roi_width * roi_height * n_bytes_per_pixel;
+    buffer = g_malloc0(n_bytes);
+
+    benchmark_method (camera, buffer, grab_frames_sync, n_runs, n_frames, n_bytes);
+
+    /* Asynchronous frame acquisition */
+    g_object_set (G_OBJECT(camera),
+                 "transfer-asynchronously", TRUE,
+                 NULL);
+
+    g_message ("Start asynchronous benchmark");
+    g_print ("  %-10s", "async");
+
+    benchmark_method (camera, buffer, grab_frames_async, n_runs, n_frames, n_bytes);
+
+    g_free (buffer);
+}
+
+int
+main (int argc, char *argv[])
+{
+    UcaPluginManager *manager;
+    GIOChannel  *log_channel;
+    GError      *error = NULL;
+
+    (void) signal (SIGINT, sigint_handler);
+    g_type_init();
+
+    if (argc < 2) {
+        print_usage();
+        return 1;
+    }
+
+    log_channel = g_io_channel_new_file ("error.log", "a+", &error);
+    g_assert_no_error (error);
+    g_log_set_handler (NULL, G_LOG_LEVEL_MASK, log_handler, log_channel);
+
+    manager = uca_plugin_manager_new ();
+    camera = uca_plugin_manager_get_camera (manager, argv[1], &error, NULL);
+
+    if (camera == NULL) {
+        g_error ("Initialization: %s", error->message);
+        return 1;
+    }
+
+    benchmark (camera);
+
+    g_object_unref (camera);
+    g_io_channel_shutdown (log_channel, TRUE, &error);
+    g_assert_no_error (error);
+
+    return 0;
+}
diff --git a/bin/tools/config.h.in b/bin/tools/config.h.in
new file mode 100644
index 0000000..aea5237
--- /dev/null
+++ b/bin/tools/config.h.in
@@ -0,0 +1 @@
+#cmakedefine HAVE_LIBTIFF
diff --git a/bin/tools/gen-doc.c b/bin/tools/gen-doc.c
new file mode 100644
index 0000000..d27bdd8
--- /dev/null
+++ b/bin/tools/gen-doc.c
@@ -0,0 +1,224 @@
+/* Copyright (C) 2012 Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
+   (Karlsruhe Institute of Technology)
+
+   This library is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published by the
+   Free Software Foundation; either version 2.1 of the License, or (at your
+   option) any later version.
+
+   This library 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 Lesser General Public License for more
+   details.
+
+   You should have received a copy of the GNU Lesser General Public License along
+   with this library; if not, write to the Free Software Foundation, Inc., 51
+   Franklin St, Fifth Floor, Boston, MA 02110, USA */
+
+#include <glib-object.h>
+#include "uca-plugin-manager.h"
+#include "uca-camera.h"
+
+
+static void
+print_usage (void)
+{
+    GList *types;
+    UcaPluginManager *manager;
+
+    manager = uca_plugin_manager_new ();
+    g_print ("Usage: gen-doc [ ");
+    types = uca_plugin_manager_get_available_cameras (manager);
+
+    if (types == NULL) {
+        g_print ("] -- no camera plugin found\n");
+        return;
+    }
+
+    for (GList *it = g_list_first (types); it != NULL; it = g_list_next (it)) {
+        gchar *name = (gchar *) it->data;
+        if (g_list_next (it) == NULL)
+            g_print ("%s ]\n", name);
+        else
+            g_print ("%s, ", name);
+    }
+}
+
+static const gchar *
+get_flags_description (GParamSpec *pspec)
+{
+    static const gchar *descriptions[] = {
+        "",
+        "Read-only",
+        "Write-only",
+        "Read / Write",
+        ""
+    };
+
+    if (pspec->flags >= 3)
+        return descriptions[3];
+
+    return descriptions[pspec->flags];
+}
+
+static void
+print_property_toc (GParamSpec **pspecs, guint n_props)
+{
+    g_print ("<h2>Properties</h2><ul id=\"toc\">");
+
+    for (guint i = 0; i < n_props; i++) {
+        GParamSpec *pspec = pspecs[i];
+        const gchar *name = g_param_spec_get_name (pspec);
+
+        g_print ("<li><code><a href=#%s>\"%s\"</a></code></li>", name, name);
+    }
+
+    g_print ("</ul>");
+}
+
+static void
+print_value_info (GParamSpec *pspec)
+{
+    gchar *default_value = NULL;
+    GString *range = g_string_new("");
+
+#define MAKE_RANGE(spec_type, fmt)              \
+    {                                           \
+        spec_type *spec = (spec_type *) pspec;  \
+        g_string_printf (range,                                     \
+                         fmt" &#8804; <em>%s</em> &#8804; "fmt,     \
+                         spec->minimum,                             \
+                         g_param_spec_get_name (pspec),             \
+                         spec->maximum);                            \
+        default_value = g_strdup_printf (fmt, spec->default_value); \
+    }
+
+    switch (pspec->value_type) {
+        case G_TYPE_BOOLEAN:
+            {
+                GParamSpecBoolean *spec = (GParamSpecBoolean *) pspec;
+                default_value = spec->default_value ? g_strdup ("<code>TRUE</code>") : g_strdup ("<code>FALSE</code>");
+            }
+            break;
+
+        case G_TYPE_UINT:
+            MAKE_RANGE (GParamSpecUInt, "%i");
+            break;
+
+        case G_TYPE_FLOAT:
+            MAKE_RANGE (GParamSpecFloat, "%.1e");
+            break;
+
+        case G_TYPE_DOUBLE:
+            MAKE_RANGE (GParamSpecDouble, "%.1e");
+            break;
+    }
+
+#undef MAKE_RANGE
+
+    if (g_type_is_a (pspec->value_type, G_TYPE_ENUM)) {
+        GParamSpecEnum *spec = (GParamSpecEnum *) pspec;
+
+        if (spec->enum_class->n_values > 0) {
+            g_string_printf (range, "<table><tr><th>Enum name</th><th>Value</th>");
+
+            for (guint i = 0; i < spec->enum_class->n_values; i++) {
+                GEnumValue *v = &spec->enum_class->values[i];
+                g_string_append_printf (range,
+                                        "<tr><td><code>%s</code></td><td>%i</td></tr>",
+                                        v->value_name, v->value);
+            }
+
+            g_string_append_printf (range, "</table>");
+        }
+    }
+
+    if (range->len > 0)
+        g_print ("<p>Possible values: %s</p>", range->str);
+
+    if (default_value != NULL) {
+        g_print ("<p>Default value: %s</p>", default_value);
+        g_free (default_value);
+    }
+
+    g_string_free (range, TRUE);
+}
+
+static void
+print_property_descriptions (GParamSpec **pspecs, guint n_props)
+{
+    g_print ("<h2>Details</h2><dl>");
+
+    for (guint i = 0; i < n_props; i++) {
+        GParamSpec *pspec = pspecs[i];
+        const gchar *name = g_param_spec_get_name (pspec);
+
+        g_print ("<dt id=\"%s\"><a href=\"#toc\">%s</a></dt>\n", name, name);
+        g_print ("<dd>");
+        g_print ("<pre><code class=\"prop-type\">\"%s\" : %s : %s</code></pre>\n",
+                 name,
+                 g_type_name (pspec->value_type),
+                 get_flags_description (pspec));
+        g_print ("<p>%s</p>\n", g_param_spec_get_blurb (pspec));
+        print_value_info (pspec);
+        g_print ("</dd>");
+    }
+
+    g_print ("</dl>");
+}
+
+static void
+print_properties (UcaCamera *camera)
+{
+    GObjectClass *oclass;
+    GParamSpec **pspecs;
+    guint n_props;
+
+    oclass = G_OBJECT_GET_CLASS (camera);
+    pspecs = g_object_class_list_properties (oclass, &n_props);
+
+    print_property_toc (pspecs, n_props);
+    print_property_descriptions (pspecs, n_props);
+
+    g_free (pspecs);
+}
+
+static const gchar *html_header = "<html><head>\
+<link rel=\"stylesheet\" href=\"style.css\" type=\"text/css\" />\
+<link href='http://fonts.googleapis.com/css?family=Droid+Sans:400,700|Droid+Serif:400,400italic|Inconsolata' rel='stylesheet' type='text/css'>\
+<title>%s &mdash; properties</title></head><body>";
+static const gchar *html_footer = "</body></html>";
+
+int main(int argc, char *argv[])
+{
+    UcaPluginManager *manager;
+    UcaCamera *camera;
+    gchar *name;
+    GError *error = NULL;
+
+    g_type_init();
+    manager = uca_plugin_manager_new ();
+
+    if (argc < 2) {
+        name = g_strdup ("Basic camera");
+        camera = g_object_new (UCA_TYPE_CAMERA, NULL);
+    }
+    else {
+        name = argv[1];
+        camera = uca_plugin_manager_get_camera (manager, name, &error, NULL);
+    }
+
+    if (camera == NULL) {
+        g_print("Error during initialization: %s\n", error->message);
+        print_usage();
+        return 1;
+    }
+
+    g_print (html_header, name);
+    g_print ("<div id=\"header\"><h1 class=\"title\">Property documentation of %s</h1>", name);
+    print_properties (camera);
+    g_print ("%s\n", html_footer);
+
+    g_object_unref (camera);
+    g_object_unref (manager);
+}
diff --git a/bin/tools/grab.c b/bin/tools/grab.c
new file mode 100644
index 0000000..972f000
--- /dev/null
+++ b/bin/tools/grab.c
@@ -0,0 +1,292 @@
+/* Copyright (C) 2011, 2012 Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
+   (Karlsruhe Institute of Technology)
+
+   This library is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published by the
+   Free Software Foundation; either version 2.1 of the License, or (at your
+   option) any later version.
+
+   This library 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 Lesser General Public License for more
+   details.
+
+   You should have received a copy of the GNU Lesser General Public License along
+   with this library; if not, write to the Free Software Foundation, Inc., 51
+   Franklin St, Fifth Floor, Boston, MA 02110, USA */
+
+#include "config.h"
+
+#include <glib-object.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "uca-plugin-manager.h"
+#include "uca-camera.h"
+#include "ring-buffer.h"
+
+#ifdef HAVE_LIBTIFF
+#include <tiffio.h>
+#endif
+
+
+typedef struct {
+    gint n_frames;
+    gdouble duration;
+    gchar *filename;
+} Options;
+
+
+static gchar *
+get_camera_list (void)
+{
+    GList *types;
+    GString *str;
+    UcaPluginManager *manager;
+
+    manager = uca_plugin_manager_new ();
+    types = uca_plugin_manager_get_available_cameras (manager);
+    str = g_string_new ("[ ");
+
+    if (types != NULL) {
+        for (GList *it = g_list_first (types); it != NULL; it = g_list_next (it)) {
+            gchar *name = (gchar *) it->data;
+
+            if (g_list_next (it) == NULL)
+                g_string_append_printf (str, "%s ]", name);
+            else
+                g_string_append_printf (str, "%s, ", name);
+        }
+    }
+    else {
+        g_string_append (str, "]");
+    }
+
+    g_object_unref (manager);
+    return g_string_free (str, FALSE);
+}
+
+static guint
+get_bytes_per_pixel (guint bits_per_pixel)
+{
+    return bits_per_pixel > 8 ? 2 : 1;
+}
+
+#ifdef HAVE_LIBTIFF
+static void
+write_tiff (RingBuffer *buffer,
+            Options *opts,
+            guint width,
+            guint height,
+            guint bits_per_pixel)
+{
+    TIFF *tif;
+    guint32 rows_per_strip;
+    guint n_frames;
+    guint bits_per_sample;
+    gsize bytes_per_pixel;
+
+    if (opts->filename)
+        tif = TIFFOpen (opts->filename, "w");
+    else
+        tif = TIFFOpen ("frames.tif", "w");
+
+    n_frames = ring_buffer_get_num_blocks (buffer);
+    rows_per_strip = TIFFDefaultStripSize (tif, (guint32) - 1);
+    bytes_per_pixel = get_bytes_per_pixel (bits_per_pixel);
+    bits_per_sample = bits_per_pixel > 8 ? 16 : 8;
+
+    /* Write multi page TIFF file */
+    TIFFSetField (tif, TIFFTAG_SUBFILETYPE, FILETYPE_PAGE);
+
+    for (guint i = 0; i < n_frames; i++) {
+        gpointer data;
+        gsize offset = 0;
+
+        data = ring_buffer_get_pointer (buffer, i);
+
+        TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, width);
+        TIFFSetField (tif, TIFFTAG_IMAGELENGTH, height);
+        TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
+        TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+        TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, 1);
+        TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+        TIFFSetField (tif, TIFFTAG_ROWSPERSTRIP, rows_per_strip);
+        TIFFSetField (tif, TIFFTAG_PAGENUMBER, i, n_frames);
+
+        for (guint y = 0; y < height; y++, offset += width * bytes_per_pixel)
+            TIFFWriteScanline (tif, data + offset, y, 0);
+
+        TIFFWriteDirectory (tif);
+    }
+
+    TIFFClose (tif);
+}
+#else
+static void
+write_raw (RingBuffer *buffer,
+           Options *opts)
+{
+    guint n_frames;
+    gsize size;
+
+    size = ring_buffer_get_block_size (buffer);
+    n_frames = ring_buffer_get_num_blocks (buffer);
+
+    for (gint i = 0; i < n_frames; i++) {
+        FILE *fp;
+        gchar *filename;
+        gpointer data;
+
+        if (opts->filename)
+            filename = g_strdup_printf ("%s-%08i.raw", opts->filename, i);
+        else
+            filename = g_strdup_printf ("frame-%08i.raw", i);
+
+        fp = fopen(filename, "wb");
+        data = ring_buffer_get_pointer (buffer, i);
+
+        fwrite (data, size, 1, fp);
+        fclose (fp);
+        g_free (filename);
+    }
+}
+#endif
+
+static GError *
+record_frames (UcaCamera *camera, Options *opts)
+{
+    guint roi_width;
+    guint roi_height;
+    guint bits;
+    guint pixel_size;
+    gsize size;
+    gint n_frames;
+    guint n_allocated;
+    GTimer *timer;
+    RingBuffer *buffer;
+    GError *error = NULL;
+    gdouble last_printed;
+
+    g_object_get (G_OBJECT (camera),
+                  "roi-width", &roi_width,
+                  "roi-height", &roi_height,
+                  "sensor-bitdepth", &bits,
+                  NULL);
+
+    pixel_size = get_bytes_per_pixel (bits);
+    size = roi_width * roi_height * pixel_size;
+    n_allocated = opts->n_frames > 0 ? opts->n_frames : 256;
+    buffer = ring_buffer_new (size, n_allocated);
+    timer = g_timer_new();
+
+    g_print("Start recording: %ix%i at %i bits/pixel\n",
+            roi_width, roi_height, bits);
+
+    uca_camera_start_recording(camera, &error);
+
+    if (error != NULL)
+        return error;
+
+    n_frames = 0;
+    g_timer_start(timer);
+    last_printed = 0.0;
+
+    while (1) {
+        gdouble elapsed;
+
+        uca_camera_grab (camera, ring_buffer_get_current_pointer (buffer), &error);
+        ring_buffer_proceed (buffer);
+
+        if (error != NULL)
+            return error;
+
+        n_frames++;
+        elapsed = g_timer_elapsed (timer, NULL);
+
+        if (n_frames == opts->n_frames || (opts->duration > 0.0 && elapsed >= opts->duration))
+            break;
+
+        if (elapsed - last_printed >= 1.0) {
+            g_print ("Recorded %i frames at %.2f frames/s\n",
+                     n_frames, n_frames / elapsed);
+            last_printed = elapsed;
+        }
+    }
+
+    g_print ("Stop recording: %3.2f frames/s\n",
+             n_frames / g_timer_elapsed (timer, NULL));
+
+    uca_camera_stop_recording (camera, &error);
+
+#ifdef HAVE_LIBTIFF
+    write_tiff (buffer, opts, roi_width, roi_height, bits);
+#else
+    write_raw (buffer, opts);
+#endif
+
+    ring_buffer_free (buffer);
+    g_timer_destroy (timer);
+
+    return error;
+}
+
+int
+main (int argc, char *argv[])
+{
+    GOptionContext *context;
+    UcaPluginManager *manager;
+    UcaCamera *camera;
+    gchar *cam_list;
+    GError *error = NULL;
+
+    static Options opts = {
+        .n_frames = -1,
+        .duration = -1.0,
+        .filename = NULL
+    };
+
+    static GOptionEntry entries[] = {
+        { "num-frames", 'n', 0, G_OPTION_ARG_INT, &opts.n_frames, "Number of frames to acquire", "N" },
+        { "duration", 'd', 0, G_OPTION_ARG_DOUBLE, &opts.duration, "Duration in seconds", NULL },
+        { "output", 'o', 0, G_OPTION_ARG_STRING, &opts.filename, "Output file name", "FILE" },
+        { NULL }
+    };
+
+    g_type_init();
+
+    cam_list = get_camera_list ();
+    context = g_option_context_new (cam_list);
+    g_option_context_add_main_entries (context, entries, NULL);
+    g_free (cam_list);
+
+    if (!g_option_context_parse (context, &argc, &argv, &error)) {
+        g_print ("Failed parsing arguments: %s\n", error->message);
+        exit (1);
+    }
+
+    if (argc < 2) {
+        g_print ("%s\n", g_option_context_get_help (context, TRUE, NULL));
+        exit (0);
+    }
+
+    if (opts.n_frames < 0 && opts.duration < 0.0) {
+        g_print ("You must specify at least one of --num-frames and --output.\n");
+        exit (1);
+    }
+
+    manager = uca_plugin_manager_new ();
+    camera = uca_plugin_manager_get_camera (manager, argv[1], &error, NULL);
+
+    if (camera == NULL) {
+        g_print ("Error during initialization: %s\n", error->message);
+        exit (1);
+    }
+
+    error = record_frames (camera, &opts);
+
+    if (error != NULL)
+        g_print ("Error: %s\n", error->message);
+
+    g_object_unref (camera);
+    return error != NULL ? 1 : 0;
+}