--- /dev/null
+/* GStreamer JPEG parser test utility
+ * Copyright (C) 2015 Tim-Philipp Müller <tim@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/codecparsers/gstjpegparser.h>
+
+#include <stdlib.h>
+
+static GstBuffer *app_segments[16]; /* NULL */
+
+static const gchar *
+get_marker_name (guint8 marker)
+{
+ switch (marker) {
+ case GST_JPEG_MARKER_SOF0:
+ return "SOF (Baseline)";
+ case GST_JPEG_MARKER_SOF1:
+ return "SOF (Extended Sequential, Huffman)";
+ case GST_JPEG_MARKER_SOF2:
+ return "SOF (Extended Progressive, Huffman)";
+ case GST_JPEG_MARKER_SOF3:
+ return "SOF (Lossless, Huffman)";
+ case GST_JPEG_MARKER_SOF5:
+ return "SOF (Differential Sequential, Huffman)";
+ case GST_JPEG_MARKER_SOF6:
+ return "SOF (Differential Progressive, Huffman)";
+ case GST_JPEG_MARKER_SOF7:
+ return "SOF (Differential Lossless, Huffman)";
+ case GST_JPEG_MARKER_SOF9:
+ return "SOF (Extended Sequential, Arithmetic)";
+ case GST_JPEG_MARKER_SOF10:
+ return "SOF (Progressive, Arithmetic)";
+ case GST_JPEG_MARKER_SOF11:
+ return "SOF (Lossless, Arithmetic)";
+ case GST_JPEG_MARKER_SOF13:
+ return "SOF (Differential Sequential, Arithmetic)";
+ case GST_JPEG_MARKER_SOF14:
+ return "SOF (Differential Progressive, Arithmetic)";
+ case GST_JPEG_MARKER_SOF15:
+ return "SOF (Differential Lossless, Arithmetic)";
+ case GST_JPEG_MARKER_DHT:
+ return "DHT";
+ case GST_JPEG_MARKER_DAC:
+ return "DAC";
+ case GST_JPEG_MARKER_SOI:
+ return "SOI";
+ case GST_JPEG_MARKER_EOI:
+ return "EOI";
+ case GST_JPEG_MARKER_SOS:
+ return "SOS";
+ case GST_JPEG_MARKER_DQT:
+ return "DQT";
+ case GST_JPEG_MARKER_DNL:
+ return "DNL";
+ case GST_JPEG_MARKER_DRI:
+ return "DRI";
+ case GST_JPEG_MARKER_APP0:
+ return "APP0";
+ case GST_JPEG_MARKER_APP1:
+ return "APP1";
+ case GST_JPEG_MARKER_APP2:
+ return "APP2";
+ case GST_JPEG_MARKER_APP3:
+ return "APP3";
+ case GST_JPEG_MARKER_APP4:
+ return "APP4";
+ case GST_JPEG_MARKER_APP5:
+ return "APP5";
+ case GST_JPEG_MARKER_APP6:
+ return "APP6";
+ case GST_JPEG_MARKER_APP7:
+ return "APP7";
+ case GST_JPEG_MARKER_APP8:
+ return "APP8";
+ case GST_JPEG_MARKER_APP9:
+ return "APP9";
+ case GST_JPEG_MARKER_APP10:
+ return "APP10";
+ case GST_JPEG_MARKER_APP11:
+ return "APP11";
+ case GST_JPEG_MARKER_APP12:
+ return "APP12";
+ case GST_JPEG_MARKER_APP13:
+ return "APP13";
+ case GST_JPEG_MARKER_APP14:
+ return "APP14";
+ case GST_JPEG_MARKER_APP15:
+ return "APP15";
+ case GST_JPEG_MARKER_COM:
+ return "COM";
+ default:
+ if (marker > GST_JPEG_MARKER_RST_MIN && marker < GST_JPEG_MARKER_RST_MAX)
+ return "RST";
+ break;
+ }
+ return "???";
+}
+
+static gboolean
+parse_jpeg_segment (GstJpegSegment * segment)
+{
+ switch (segment->marker) {
+ case GST_JPEG_MARKER_SOF0:
+ case GST_JPEG_MARKER_SOF1:
+ case GST_JPEG_MARKER_SOF2:
+ case GST_JPEG_MARKER_SOF3:
+ case GST_JPEG_MARKER_SOF9:
+ case GST_JPEG_MARKER_SOF10:
+ case GST_JPEG_MARKER_SOF11:{
+ GstJpegFrameHdr hdr;
+ int i;
+
+ if (!gst_jpeg_segment_parse_frame_header (segment, &hdr)) {
+ g_printerr ("Failed to parse frame header!\n");
+ return FALSE;
+ }
+
+ g_print ("\t\twidth x height = %u x %u\n", hdr.width, hdr.height);
+ g_print ("\t\tsample precision = %u\n", hdr.sample_precision);
+ g_print ("\t\tnum components = %u\n", hdr.num_components);
+ for (i = 0; i < hdr.num_components; ++i) {
+ g_print ("\t\t%d: id=%d, h=%d, v=%d, qts=%d\n", i,
+ hdr.components[i].identifier, hdr.components[i].horizontal_factor,
+ hdr.components[i].vertical_factor,
+ hdr.components[i].quant_table_selector);
+ }
+ break;
+ }
+ case GST_JPEG_MARKER_DHT:{
+ GstJpegHuffmanTables ht;
+
+ if (!gst_jpeg_segment_parse_huffman_table (segment, &ht)) {
+ g_printerr ("Failed to parse huffman table!\n");
+ return FALSE;
+ }
+ break;
+ }
+ case GST_JPEG_MARKER_DQT:{
+ GstJpegQuantTables qt;
+
+ if (!gst_jpeg_segment_parse_quantization_table (segment, &qt)) {
+ g_printerr ("Failed to parse quantization table!\n");
+ return FALSE;
+ }
+ break;
+ }
+ case GST_JPEG_MARKER_SOS:{
+ GstJpegScanHdr hdr;
+ int i;
+
+ if (!gst_jpeg_segment_parse_scan_header (segment, &hdr)) {
+ g_printerr ("Failed to parse scan header!\n");
+ return FALSE;
+ }
+
+ g_print ("\t\tnum components = %u\n", hdr.num_components);
+ for (i = 0; i < hdr.num_components; ++i) {
+ g_print ("\t\t %d: cs=%d, dcs=%d, acs=%d\n", i,
+ hdr.components[i].component_selector,
+ hdr.components[i].dc_selector, hdr.components[i].ac_selector);
+ }
+ }
+ case GST_JPEG_MARKER_COM:
+ /* gst_util_dump_mem (segment->data + segment->offset, segment->size); */
+ break;
+ default:
+ if (segment->marker >= GST_JPEG_MARKER_APP_MIN
+ && segment->marker <= GST_JPEG_MARKER_APP_MAX) {
+ guint n = segment->marker - GST_JPEG_MARKER_APP_MIN;
+
+ if (app_segments[n] == NULL)
+ app_segments[n] = gst_buffer_new ();
+
+ gst_buffer_append_memory (app_segments[n],
+ gst_memory_new_wrapped (GST_MEMORY_FLAG_READONLY,
+ (guint8 *) segment->data + segment->offset,
+ segment->size, 0, segment->size, NULL, NULL));
+ }
+ break;
+ }
+ return TRUE;
+}
+
+static void
+parse_jpeg (const guint8 * data, gsize size)
+{
+ GstJpegSegment segment;
+ guint offset = 0;
+
+ while (gst_jpeg_parse (&segment, data, size, offset)) {
+ if (segment.offset > offset + 2)
+ g_print (" skipped %u bytes\n", (guint) segment.offset - offset - 2);
+
+ g_print ("%6d bytes at offset %-8u : %s\n", (gint) segment.size,
+ segment.offset, get_marker_name (segment.marker));
+
+ if (segment.marker == GST_JPEG_MARKER_EOI)
+ break;
+
+ if (offset + segment.size < size &&
+ parse_jpeg_segment (&segment) && segment.size >= 0)
+ offset = segment.offset + segment.size;
+ else
+ offset += 2;
+ };
+}
+
+static void
+process_file (const gchar * fn)
+{
+ GError *err = NULL;
+ gchar *data = NULL;
+ gsize size = 0;
+ guint i;
+
+ g_print ("===============================================================\n");
+ g_print (" %s\n", fn);
+ g_print ("===============================================================\n");
+
+ if (!g_file_get_contents (fn, &data, &size, &err)) {
+ g_error ("%s", err->message);
+ g_error_free (err);
+ return;
+ }
+
+ parse_jpeg ((const guint8 *) data, size);
+
+ for (i = 0; i < G_N_ELEMENTS (app_segments); ++i) {
+ if (app_segments[i] != NULL) {
+ GstMapInfo map = GST_MAP_INFO_INIT;
+
+ /* Could parse/extract tags here */
+ gst_buffer_map (app_segments[i], &map, GST_MAP_READ);
+ g_print ("\tAPP%-2u : %u bytes\n", i, (guint) map.size);
+ gst_util_dump_mem ((guchar *) map.data, MIN (map.size, 16));
+ gst_buffer_unmap (app_segments[i], &map);
+ gst_buffer_unref (app_segments[i]);
+ app_segments[i] = NULL;
+ }
+ }
+
+ g_free (data);
+}
+
+int
+main (int argc, gchar ** argv)
+{
+ gchar **filenames = NULL;
+ GOptionEntry options[] = {
+ {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL},
+ {NULL}
+ };
+ GOptionContext *ctx;
+ GError *err = NULL;
+ guint i, num;
+
+ gst_init (&argc, &argv);
+
+ if (argc == 1) {
+ g_printerr ("Usage: %s FILE.JPG [FILE2.JPG] [FILE..JPG]\n", argv[0]);
+ return -1;
+ }
+
+ ctx = g_option_context_new ("JPEG FILES");
+ g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
+ g_option_context_add_group (ctx, gst_init_get_option_group ());
+ if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
+ g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
+ exit (1);
+ }
+ g_option_context_free (ctx);
+
+ if (filenames == NULL || *filenames == NULL) {
+ g_printerr ("Please provide one or more filenames.");
+ return 1;
+ }
+
+ num = g_strv_length (filenames);
+
+ for (i = 0; i < num; ++i) {
+ process_file (filenames[i]);
+ }
+
+ g_strfreev (filenames);
+
+ return 0;
+}
projects / platform / upstream / gstreamer.git / commitdiff