tests/examples/codecparsers/parse-jpeg.c - mtk-gst-plugins-bad-debian - Git at Google

 /* 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_clear_error (&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));
     g_option_context_free (ctx);
     g_clear_error (&err);
     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;
 }
	/* 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_clear_error (&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));
	g_option_context_free (ctx);
	g_clear_error (&err);
	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;
	}