mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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90da904f1e
Original commit message from CVS: compatibility fix for new GST_DEBUG stuff. Includes fixes for missing includes for config.h and unistd.h I only ensured for plugins I can build that they work, so if some of them are still broken, you gotta fix them yourselves unfortunately.
387 lines
12 KiB
C
387 lines
12 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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/*#define DEBUG_ENABLED*/
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#include "gstjpegdec.h"
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extern GstPadTemplate *jpegdec_src_template, *jpegdec_sink_template;
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/* elementfactory information */
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GstElementDetails gst_jpegdec_details = {
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"jpeg image decoder",
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"Codec/Image/Decoder",
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"LGPL",
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".jpeg",
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VERSION,
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"Wim Taymans <wim.taymans@tvd.be>",
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"(C) 2000",
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};
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/* JpegDec signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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/* FILL ME */
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};
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static void gst_jpegdec_class_init (GstJpegDec *klass);
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static void gst_jpegdec_init (GstJpegDec *jpegdec);
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static void gst_jpegdec_chain (GstPad *pad, GstBuffer *buf);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_jpegdec_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_jpegdec_get_type(void) {
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static GType jpegdec_type = 0;
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if (!jpegdec_type) {
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static const GTypeInfo jpegdec_info = {
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sizeof(GstJpegDec), NULL,
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NULL,
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(GClassInitFunc)gst_jpegdec_class_init,
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NULL,
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NULL,
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sizeof(GstJpegDec),
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0,
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(GInstanceInitFunc)gst_jpegdec_init,
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};
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jpegdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstJpegDec", &jpegdec_info, 0);
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}
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return jpegdec_type;
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}
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static void
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gst_jpegdec_class_init (GstJpegDec *klass)
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{
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GstElementClass *gstelement_class;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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}
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static void
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gst_jpegdec_init_source (j_decompress_ptr cinfo)
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{
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GST_DEBUG ("gst_jpegdec_chain: init_source");
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}
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static gboolean
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gst_jpegdec_fill_input_buffer (j_decompress_ptr cinfo)
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{
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GST_DEBUG ("gst_jpegdec_chain: fill_input_buffer");
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return TRUE;
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}
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static void
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gst_jpegdec_skip_input_data (j_decompress_ptr cinfo, glong num_bytes)
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{
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GST_DEBUG ("gst_jpegdec_chain: skip_input_data");
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}
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static gboolean
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gst_jpegdec_resync_to_restart (j_decompress_ptr cinfo, gint desired)
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{
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GST_DEBUG ("gst_jpegdec_chain: resync_to_start");
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return TRUE;
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}
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static void
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gst_jpegdec_term_source (j_decompress_ptr cinfo)
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{
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GST_DEBUG ("gst_jpegdec_chain: term_source");
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}
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static void
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gst_jpegdec_init (GstJpegDec *jpegdec)
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{
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GST_DEBUG ("gst_jpegdec_init: initializing");
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/* create the sink and src pads */
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jpegdec->sinkpad = gst_pad_new_from_template (jpegdec_sink_template, "sink");
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gst_element_add_pad(GST_ELEMENT(jpegdec),jpegdec->sinkpad);
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gst_pad_set_chain_function(jpegdec->sinkpad,gst_jpegdec_chain);
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jpegdec->srcpad = gst_pad_new_from_template (jpegdec_src_template, "src");
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gst_element_add_pad(GST_ELEMENT(jpegdec),jpegdec->srcpad);
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/* initialize the jpegdec decoder state */
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jpegdec->next_time = 0;
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/* reset the initial video state */
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jpegdec->format = -1;
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jpegdec->width = -1;
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jpegdec->height = -1;
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jpegdec->line[0] = NULL;
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jpegdec->line[1] = NULL;
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jpegdec->line[2] = NULL;
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/* setup jpeglib */
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memset(&jpegdec->cinfo, 0, sizeof(jpegdec->cinfo));
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memset(&jpegdec->jerr, 0, sizeof(jpegdec->jerr));
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jpegdec->cinfo.err = jpeg_std_error(&jpegdec->jerr);
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jpeg_create_decompress(&jpegdec->cinfo);
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jpegdec->jsrc.init_source = gst_jpegdec_init_source;
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jpegdec->jsrc.fill_input_buffer = gst_jpegdec_fill_input_buffer;
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jpegdec->jsrc.skip_input_data = gst_jpegdec_skip_input_data;
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jpegdec->jsrc.resync_to_restart = gst_jpegdec_resync_to_restart;
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jpegdec->jsrc.term_source = gst_jpegdec_term_source;
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jpegdec->cinfo.src = &jpegdec->jsrc;
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}
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/* shamelessly ripped from jpegutils.c in mjpegtools */
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static void add_huff_table (j_decompress_ptr dinfo,
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JHUFF_TBL **htblptr,
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const UINT8 *bits, const UINT8 *val)
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/* Define a Huffman table */
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{
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int nsymbols, len;
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if (*htblptr == NULL)
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*htblptr = jpeg_alloc_huff_table((j_common_ptr) dinfo);
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/* Copy the number-of-symbols-of-each-code-length counts */
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memcpy((*htblptr)->bits, bits, sizeof((*htblptr)->bits));
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/* Validate the counts. We do this here mainly so we can copy the right
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* number of symbols from the val[] array, without risking marching off
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* the end of memory. jchuff.c will do a more thorough test later.
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*/
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nsymbols = 0;
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for (len = 1; len <= 16; len++)
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nsymbols += bits[len];
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if (nsymbols < 1 || nsymbols > 256)
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g_error("jpegutils.c: add_huff_table failed badly. ");
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memcpy((*htblptr)->huffval, val, nsymbols * sizeof(UINT8));
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}
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static void std_huff_tables (j_decompress_ptr dinfo)
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/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */
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/* IMPORTANT: these are only valid for 8-bit data precision! */
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{
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static const UINT8 bits_dc_luminance[17] =
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{ /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
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static const UINT8 val_dc_luminance[] =
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
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static const UINT8 bits_dc_chrominance[17] =
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{ /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
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static const UINT8 val_dc_chrominance[] =
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
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static const UINT8 bits_ac_luminance[17] =
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{ /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
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static const UINT8 val_ac_luminance[] =
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{ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
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0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
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0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
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0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
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0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
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0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
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0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
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0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
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0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
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0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
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0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
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0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
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0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
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0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
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0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
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0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
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0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
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0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
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0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
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0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
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0xf9, 0xfa };
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static const UINT8 bits_ac_chrominance[17] =
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{ /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
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static const UINT8 val_ac_chrominance[] =
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{ 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
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0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
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0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
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0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
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0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
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0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
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0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
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0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
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0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
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0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
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0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
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0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
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0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
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0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
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0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
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0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
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0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
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0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
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0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
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0xf9, 0xfa };
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add_huff_table(dinfo, &dinfo->dc_huff_tbl_ptrs[0],
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bits_dc_luminance, val_dc_luminance);
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add_huff_table(dinfo, &dinfo->ac_huff_tbl_ptrs[0],
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bits_ac_luminance, val_ac_luminance);
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add_huff_table(dinfo, &dinfo->dc_huff_tbl_ptrs[1],
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bits_dc_chrominance, val_dc_chrominance);
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add_huff_table(dinfo, &dinfo->ac_huff_tbl_ptrs[1],
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bits_ac_chrominance, val_ac_chrominance);
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}
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static void guarantee_huff_tables(j_decompress_ptr dinfo)
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{
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if ( (dinfo->dc_huff_tbl_ptrs[0] == NULL) &&
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(dinfo->dc_huff_tbl_ptrs[1] == NULL) &&
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(dinfo->ac_huff_tbl_ptrs[0] == NULL) &&
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(dinfo->ac_huff_tbl_ptrs[1] == NULL) ) {
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GST_DEBUG (
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"Generating standard Huffman tables for this frame.");
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std_huff_tables(dinfo);
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}
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}
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static void
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gst_jpegdec_chain (GstPad *pad, GstBuffer *buf)
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{
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GstJpegDec *jpegdec;
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guchar *data, *outdata;
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gulong size, outsize;
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GstBuffer *outbuf;
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/*GstMeta *meta;*/
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gint width, height, width2;
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guchar *base[3];
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gint i,j, k;
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gint r_h, r_v;
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g_return_if_fail(pad != NULL);
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g_return_if_fail(GST_IS_PAD(pad));
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g_return_if_fail(buf != NULL);
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/*g_return_if_fail(GST_IS_BUFFER(buf));*/
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jpegdec = GST_JPEGDEC (GST_OBJECT_PARENT (pad));
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if (!GST_PAD_IS_LINKED (jpegdec->srcpad)) {
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gst_buffer_unref (buf);
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return;
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}
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data = (guchar *)GST_BUFFER_DATA(buf);
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size = GST_BUFFER_SIZE(buf);
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GST_DEBUG ("gst_jpegdec_chain: got buffer of %ld bytes in '%s'",size,
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GST_OBJECT_NAME (jpegdec));
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jpegdec->jsrc.next_input_byte = data;
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jpegdec->jsrc.bytes_in_buffer = size;
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GST_DEBUG ("gst_jpegdec_chain: reading header %08lx", *(gulong *)data);
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jpeg_read_header(&jpegdec->cinfo, TRUE);
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r_h = jpegdec->cinfo.cur_comp_info[0]->h_samp_factor;
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r_v = jpegdec->cinfo.cur_comp_info[0]->v_samp_factor;
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/*g_print ("%d %d\n", r_h, r_v);*/
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/*g_print ("%d %d\n", jpegdec->cinfo.cur_comp_info[1]->h_samp_factor, jpegdec->cinfo.cur_comp_info[1]->v_samp_factor);*/
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/*g_print ("%d %d\n", jpegdec->cinfo.cur_comp_info[2]->h_samp_factor, jpegdec->cinfo.cur_comp_info[2]->v_samp_factor);*/
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jpegdec->cinfo.do_fancy_upsampling = FALSE;
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jpegdec->cinfo.do_block_smoothing = FALSE;
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jpegdec->cinfo.out_color_space = JCS_YCbCr;
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jpegdec->cinfo.dct_method = JDCT_IFAST;
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jpegdec->cinfo.raw_data_out = TRUE;
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GST_DEBUG ("gst_jpegdec_chain: starting decompress");
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guarantee_huff_tables(&jpegdec->cinfo);
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jpeg_start_decompress(&jpegdec->cinfo);
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width = jpegdec->cinfo.output_width;
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height = jpegdec->cinfo.output_height;
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GST_DEBUG ("gst_jpegdec_chain: width %d, height %d", width, height);
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outbuf = gst_buffer_new();
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outsize = GST_BUFFER_SIZE(outbuf) = width*height +
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width*height / 2;
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outdata = GST_BUFFER_DATA(outbuf) = g_malloc(outsize);
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GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
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if (jpegdec->height != height) {
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jpegdec->line[0] = g_realloc(jpegdec->line[0], height*sizeof(char*));
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jpegdec->line[1] = g_realloc(jpegdec->line[1], height*sizeof(char*));
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jpegdec->line[2] = g_realloc(jpegdec->line[2], height*sizeof(char*));
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jpegdec->height = height;
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gst_pad_try_set_caps (jpegdec->srcpad,
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GST_CAPS_NEW (
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"jpegdec_caps",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT (width),
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"height", GST_PROPS_INT (height)
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));
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}
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/* mind the swap, jpeglib outputs blue chroma first */
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base[0] = outdata;
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base[1] = base[0]+width*height;
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base[2] = base[1]+width*height/4;
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width2 = width >> 1;
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GST_DEBUG ("gst_jpegdec_chain: decompressing %u", jpegdec->cinfo.rec_outbuf_height);
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for (i = 0; i < height; i += r_v*DCTSIZE) {
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for (j=0, k=0; j< (r_v*DCTSIZE); j += r_v, k++) {
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jpegdec->line[0][j] = base[0]; base[0] += width;
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if (r_v == 2) {
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jpegdec->line[0][j+1] = base[0]; base[0] += width;
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}
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jpegdec->line[1][k] = base[1];
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jpegdec->line[2][k] = base[2];
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if (r_v == 2 || k&1) {
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base[1] += width2; base[2] += width2;
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}
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}
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/*g_print ("%d\n", jpegdec->cinfo.output_scanline);*/
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jpeg_read_raw_data(&jpegdec->cinfo, jpegdec->line, r_v*DCTSIZE);
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}
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GST_DEBUG ("gst_jpegdec_chain: decompressing finished");
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jpeg_finish_decompress(&jpegdec->cinfo);
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GST_DEBUG ("gst_jpegdec_chain: sending buffer");
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gst_pad_push(jpegdec->srcpad, outbuf);
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gst_buffer_unref(buf);
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}
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