<commit_before>/* GStreamer
 * Copyright (C) <1999> <NAME> <<EMAIL>>
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
/**
 * SECTION:element-jpegenc
 *
 * Encodes jpeg images.
 *
 * <refsect2>
 * <title>Example launch line</title>
 * |[
 * gst-launch videotestsrc num-buffers=50 ! video/x-raw-yuv, framerate='(fraction)'5/1 ! jpegenc ! avimux ! filesink location=mjpeg.avi
 * ]| a pipeline to mux 5 JPEG frames per second into a 10 sec. long motion jpeg
 * avi.
 * </refsect2>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>

#include "gstjpegenc.h"
#include "gstjpeg.h"
#include <gst/video/video.h>

/* experimental */
/* setting smoothig seems to have no effect in libjepeg
#define ENABLE_SMOOTHING 1
*/

GST_DEBUG_CATEGORY_STATIC (jpegenc_debug);
#define GST_CAT_DEFAULT jpegenc_debug

#define JPEG_DEFAULT_QUALITY 85
#define JPEG_DEFAULT_SMOOTHING 0
#define JPEG_DEFAULT_IDCT_METHOD	JDCT_FASTEST

/* JpegEnc signals and args */
enum
{
  FRAME_ENCODED,
  /* FILL ME */
  LAST_SIGNAL
};

enum
{
  PROP_0,
  PROP_QUALITY,
  PROP_SMOOTHING,
  PROP_IDCT_METHOD
};

static void gst_jpegenc_reset (GstJpegEnc * enc);
static void gst_jpegenc_base_init (gpointer g_class);
static void gst_jpegenc_class_init (GstJpegEnc * klass);
static void gst_jpegenc_init (GstJpegEnc * jpegenc);
static void gst_jpegenc_finalize (GObject * object);

static GstFlowReturn gst_jpegenc_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_jpegenc_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_jpegenc_getcaps (GstPad * pad);

static void gst_jpegenc_resync (GstJpegEnc * jpegenc);
static void gst_jpegenc_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_jpegenc_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_jpegenc_change_state (GstElement * element,
    GstStateChange transition);


static GstElementClass *parent_class = NULL;
static guint gst_jpegenc_signals[LAST_SIGNAL] = { 0 };

GType
gst_jpegenc_get_type (void)
{
  static GType jpegenc_type = 0;

  if (!jpegenc_type) {
    static const GTypeInfo jpegenc_info = {
      sizeof (GstJpegEnc),
      (GBaseInitFunc) gst_jpegenc_base_init,
      NULL,
      (GClassInitFunc) gst_jpegenc_class_init,
      NULL,
      NULL,
      sizeof (GstJpegEnc),
      0,
      (GInstanceInitFunc) gst_jpegenc_init,
    };

    jpegenc_type =
        g_type_register_static (GST_TYPE_ELEMENT, "GstJpegEnc", &jpegenc_info,
        0);
  }
  return jpegenc_type;
}

/* *INDENT-OFF* */
static GstStaticPadTemplate gst_jpegenc_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
        ("{ I420, YV12, YUY2, UYVY, Y41B, Y42B, YVYU, Y444 }") "; "
        GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
        GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
        GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR)
    );
/* *INDENT-ON* */

static GstStaticPadTemplate gst_jpegenc_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("image/jpeg, "
        "width = (int) [ 16, 65535 ], "
        "height = (int) [ 16, 65535 ], " "framerate = (fraction) [ 0/1, MAX ]")
    );

static void
gst_jpegenc_base_init (gpointer g_class)
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);

  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_jpegenc_sink_pad_template));
  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_jpegenc_src_pad_template));
  gst_element_class_set_details_simple (element_class, "JPEG image encoder",
      "Codec/Encoder/Image",
      "Encode images in JPEG format", "<NAME> <<EMAIL>>");
}

static void
gst_jpegenc_class_init (GstJpegEnc * klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;

  parent_class = g_type_class_peek_parent (klass);

  gst_jpegenc_signals[FRAME_ENCODED] =
      g_signal_new ("frame-encoded", G_TYPE_FROM_CLASS (klass),
      G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstJpegEncClass, frame_encoded), NULL,
      NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);

  gobject_class->set_property = gst_jpegenc_set_property;
  gobject_class->get_property = gst_jpegenc_get_property;


  g_object_class_install_property (gobject_class, PROP_QUALITY,
      g_param_spec_int ("quality", "Quality", "Quality of encoding",
          0, 100, JPEG_DEFAULT_QUALITY, G_PARAM_READWRITE));

#ifdef ENABLE_SMOOTHING
  /* disabled, since it doesn't seem to work */
  g_object_class_install_property (gobject_class, PROP_SMOOTHING,
      g_param_spec_int ("smoothing", "Smoothing", "Smoothing factor",
          0, 100, JPEG_DEFAULT_SMOOTHING, G_PARAM_READWRITE));
#endif

  g_object_class_install_property (gobject_class, PROP_IDCT_METHOD,
      g_param_spec_enum ("idct-method", "IDCT Method",
          "The IDCT algorithm to use", GST_TYPE_IDCT_METHOD,
          JPEG_DEFAULT_IDCT_METHOD, G_PARAM_READWRITE));

  gstelement_class->change_state = gst_jpegenc_change_state;

  gobject_class->finalize = gst_jpegenc_finalize;

  GST_DEBUG_CATEGORY_INIT (jpegenc_debug, "jpegenc", 0,
      "JPEG encoding element");
}

static void
gst_jpegenc_init_destination (j_compress_ptr cinfo)
{
  GST_DEBUG ("gst_jpegenc_chain: init_destination");
}

static boolean
gst_jpegenc_flush_destination (j_compress_ptr cinfo)
{
  GstBuffer *overflow_buffer;
  guint32 old_buffer_size;
  GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
  GST_DEBUG_OBJECT (jpegenc,
      "gst_jpegenc_chain: flush_destination: buffer too small");

  /* Our output buffer wasn't big enough.
   * Make a new buffer that's twice the size, */
  old_buffer_size = GST_BUFFER_SIZE (jpegenc->output_buffer);
  gst_pad_alloc_buffer_and_set_caps (jpegenc->srcpad,
      GST_BUFFER_OFFSET_NONE, old_buffer_size * 2,
      GST_PAD_CAPS (jpegenc->srcpad), &overflow_buffer);
  memcpy (GST_BUFFER_DATA (overflow_buffer),
      GST_BUFFER_DATA (jpegenc->output_buffer), old_buffer_size);

  gst_buffer_copy_metadata (overflow_buffer, jpegenc->output_buffer,
      GST_BUFFER_COPY_TIMESTAMPS);

  /* drop it into place, */
  gst_buffer_unref (jpegenc->output_buffer);
  jpegenc->output_buffer = overflow_buffer;

  /* and last, update libjpeg on where to work. */
  jpegenc->jdest.next_output_byte =
      GST_BUFFER_DATA (jpegenc->output_buffer) + old_buffer_size;
  jpegenc->jdest.free_in_buffer =
      GST_BUFFER_SIZE (jpegenc->output_buffer) - old_buffer_size;

  return TRUE;
}

static void
gst_jpegenc_term_destination (j_compress_ptr cinfo)
{
  GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
  GST_DEBUG_OBJECT (jpegenc, "gst_jpegenc_chain: term_source");

  /* Trim the buffer size and push it. */
  GST_BUFFER_SIZE (jpegenc->output_buffer) =
      GST_ROUND_UP_4 (GST_BUFFER_SIZE (jpegenc->output_buffer) -
      jpegenc->jdest.free_in_buffer);

  g_signal_emit (G_OBJECT (jpegenc), gst_jpegenc_signals[FRAME_ENCODED], 0);

  jpegenc->last_ret = gst_pad_push (jpegenc->srcpad, jpegenc->output_buffer);
  jpegenc->output_buffer = NULL;
}

static void
gst_jpegenc_init (GstJpegEnc * jpegenc)
{
  /* create the sink and src pads */
  jpegenc->sinkpad =
      gst_pad_new_from_static_template (&gst_jpegenc_sink_pad_template, "sink");
  gst_pad_set_chain_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_chain));
  gst_pad_set_getcaps_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_getcaps));
  gst_pad_set_setcaps_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_setcaps));
  gst_element_add_pad (GST_ELEMENT (jpegenc), jpegenc->sinkpad);

  jpegenc->srcpad =
      gst_pad_new_from_static_template (&gst_jpegenc_src_pad_template, "src");
  gst_pad_use_fixed_caps (jpegenc->srcpad);
  gst_element_add_pad (GST_ELEMENT (jpegenc), jpegenc->srcpad);

  /* reset the initial video state */
  jpegenc->width = -1;
  jpegenc->height = -1;

  /* setup jpeglib */
  memset (&jpegenc->cinfo, 0, sizeof (jpegenc->cinfo));
  memset (&jpegenc->jerr, 0, sizeof (jpegenc->jerr));
  jpegenc->cinfo.err = jpeg_std_error (&jpegenc->jerr);
  jpeg_create_compress (&jpegenc->cinfo);

  jpegenc->jdest.init_destination = gst_jpegenc_init_destination;
  jpegenc->jdest.empty_output_buffer = gst_jpegenc_flush_destination;
  jpegenc->jdest.term_destination = gst_jpegenc_term_destination;
  jpegenc->cinfo.dest = &jpegenc->jdest;
  jpegenc->cinfo.client_data = jpegenc;

  /* init properties */
  jpegenc->quality = JPEG_DEFAULT_QUALITY;
  jpegenc->smoothing = JPEG_DEFAULT_SMOOTHING;
  jpegenc->idct_method = JPEG_DEFAULT_IDCT_METHOD;

  gst_jpegenc_reset (jpegenc);
}

static void
gst_jpegenc_reset (GstJpegEnc * enc)
{
  gint i, j;

  g_free (enc->line[0]);
  g_free (enc->line[1]);
  g_free (enc->line[2]);
  enc->line[0] = NULL;
  enc->line[1] = NULL;
  enc->line[2] = NULL;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 4 * DCTSIZE; j++) {
      g_free (enc->row[i][j]);
    }
  }

  enc->width = -1;
  enc->height = -1;
  enc->format = GST_VIDEO_FORMAT_UNKNOWN;
  enc->fps_den = enc->par_den = 0;
  enc->height = enc->width = 0;
}

static void
gst_jpegenc_finalize (GObject * object)
{
  GstJpegEnc *filter = GST_JPEGENC (object);

  jpeg_destroy_compress (&filter->cinfo);

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static GstCaps *
gst_jpegenc_getcaps (GstPad * pad)
{
  GstJpegEnc *jpegenc = GST_JPEGENC (gst_pad_get_parent (pad));
  GstCaps *caps, *othercaps;
  const GstCaps *templ;<commit_msg>jpegenc: Keep variables in sane state after _reset<commit_after>/* GStreamer
 * Copyright (C) <1999> <NAME> <<EMAIL>>
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
/**
 * SECTION:element-jpegenc
 *
 * Encodes jpeg images.
 *
 * <refsect2>
 * <title>Example launch line</title>
 * |[
 * gst-launch videotestsrc num-buffers=50 ! video/x-raw-yuv, framerate='(fraction)'5/1 ! jpegenc ! avimux ! filesink location=mjpeg.avi
 * ]| a pipeline to mux 5 JPEG frames per second into a 10 sec. long motion jpeg
 * avi.
 * </refsect2>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>

#include "gstjpegenc.h"
#include "gstjpeg.h"
#include <gst/video/video.h>

/* experimental */
/* setting smoothig seems to have no effect in libjepeg
#define ENABLE_SMOOTHING 1
*/

GST_DEBUG_CATEGORY_STATIC (jpegenc_debug);
#define GST_CAT_DEFAULT jpegenc_debug

#define JPEG_DEFAULT_QUALITY 85
#define JPEG_DEFAULT_SMOOTHING 0
#define JPEG_DEFAULT_IDCT_METHOD	JDCT_FASTEST

/* JpegEnc signals and args */
enum
{
  FRAME_ENCODED,
  /* FILL ME */
  LAST_SIGNAL
};

enum
{
  PROP_0,
  PROP_QUALITY,
  PROP_SMOOTHING,
  PROP_IDCT_METHOD
};

static void gst_jpegenc_reset (GstJpegEnc * enc);
static void gst_jpegenc_base_init (gpointer g_class);
static void gst_jpegenc_class_init (GstJpegEnc * klass);
static void gst_jpegenc_init (GstJpegEnc * jpegenc);
static void gst_jpegenc_finalize (GObject * object);

static GstFlowReturn gst_jpegenc_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_jpegenc_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_jpegenc_getcaps (GstPad * pad);

static void gst_jpegenc_resync (GstJpegEnc * jpegenc);
static void gst_jpegenc_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_jpegenc_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_jpegenc_change_state (GstElement * element,
    GstStateChange transition);


static GstElementClass *parent_class = NULL;
static guint gst_jpegenc_signals[LAST_SIGNAL] = { 0 };

GType
gst_jpegenc_get_type (void)
{
  static GType jpegenc_type = 0;

  if (!jpegenc_type) {
    static const GTypeInfo jpegenc_info = {
      sizeof (GstJpegEnc),
      (GBaseInitFunc) gst_jpegenc_base_init,
      NULL,
      (GClassInitFunc) gst_jpegenc_class_init,
      NULL,
      NULL,
      sizeof (GstJpegEnc),
      0,
      (GInstanceInitFunc) gst_jpegenc_init,
    };

    jpegenc_type =
        g_type_register_static (GST_TYPE_ELEMENT, "GstJpegEnc", &jpegenc_info,
        0);
  }
  return jpegenc_type;
}

/* *INDENT-OFF* */
static GstStaticPadTemplate gst_jpegenc_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
        ("{ I420, YV12, YUY2, UYVY, Y41B, Y42B, YVYU, Y444 }") "; "
        GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
        GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
        GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR)
    );
/* *INDENT-ON* */

static GstStaticPadTemplate gst_jpegenc_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("image/jpeg, "
        "width = (int) [ 16, 65535 ], "
        "height = (int) [ 16, 65535 ], " "framerate = (fraction) [ 0/1, MAX ]")
    );

static void
gst_jpegenc_base_init (gpointer g_class)
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);

  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_jpegenc_sink_pad_template));
  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&gst_jpegenc_src_pad_template));
  gst_element_class_set_details_simple (element_class, "JPEG image encoder",
      "Codec/Encoder/Image",
      "Encode images in JPEG format", "<NAME> <<EMAIL>>");
}

static void
gst_jpegenc_class_init (GstJpegEnc * klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;

  parent_class = g_type_class_peek_parent (klass);

  gst_jpegenc_signals[FRAME_ENCODED] =
      g_signal_new ("frame-encoded", G_TYPE_FROM_CLASS (klass),
      G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstJpegEncClass, frame_encoded), NULL,
      NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);

  gobject_class->set_property = gst_jpegenc_set_property;
  gobject_class->get_property = gst_jpegenc_get_property;


  g_object_class_install_property (gobject_class, PROP_QUALITY,
      g_param_spec_int ("quality", "Quality", "Quality of encoding",
          0, 100, JPEG_DEFAULT_QUALITY, G_PARAM_READWRITE));

#ifdef ENABLE_SMOOTHING
  /* disabled, since it doesn't seem to work */
  g_object_class_install_property (gobject_class, PROP_SMOOTHING,
      g_param_spec_int ("smoothing", "Smoothing", "Smoothing factor",
          0, 100, JPEG_DEFAULT_SMOOTHING, G_PARAM_READWRITE));
#endif

  g_object_class_install_property (gobject_class, PROP_IDCT_METHOD,
      g_param_spec_enum ("idct-method", "IDCT Method",
          "The IDCT algorithm to use", GST_TYPE_IDCT_METHOD,
          JPEG_DEFAULT_IDCT_METHOD, G_PARAM_READWRITE));

  gstelement_class->change_state = gst_jpegenc_change_state;

  gobject_class->finalize = gst_jpegenc_finalize;

  GST_DEBUG_CATEGORY_INIT (jpegenc_debug, "jpegenc", 0,
      "JPEG encoding element");
}

static void
gst_jpegenc_init_destination (j_compress_ptr cinfo)
{
  GST_DEBUG ("gst_jpegenc_chain: init_destination");
}

static boolean
gst_jpegenc_flush_destination (j_compress_ptr cinfo)
{
  GstBuffer *overflow_buffer;
  guint32 old_buffer_size;
  GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
  GST_DEBUG_OBJECT (jpegenc,
      "gst_jpegenc_chain: flush_destination: buffer too small");

  /* Our output buffer wasn't big enough.
   * Make a new buffer that's twice the size, */
  old_buffer_size = GST_BUFFER_SIZE (jpegenc->output_buffer);
  gst_pad_alloc_buffer_and_set_caps (jpegenc->srcpad,
      GST_BUFFER_OFFSET_NONE, old_buffer_size * 2,
      GST_PAD_CAPS (jpegenc->srcpad), &overflow_buffer);
  memcpy (GST_BUFFER_DATA (overflow_buffer),
      GST_BUFFER_DATA (jpegenc->output_buffer), old_buffer_size);

  gst_buffer_copy_metadata (overflow_buffer, jpegenc->output_buffer,
      GST_BUFFER_COPY_TIMESTAMPS);

  /* drop it into place, */
  gst_buffer_unref (jpegenc->output_buffer);
  jpegenc->output_buffer = overflow_buffer;

  /* and last, update libjpeg on where to work. */
  jpegenc->jdest.next_output_byte =
      GST_BUFFER_DATA (jpegenc->output_buffer) + old_buffer_size;
  jpegenc->jdest.free_in_buffer =
      GST_BUFFER_SIZE (jpegenc->output_buffer) - old_buffer_size;

  return TRUE;
}

static void
gst_jpegenc_term_destination (j_compress_ptr cinfo)
{
  GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
  GST_DEBUG_OBJECT (jpegenc, "gst_jpegenc_chain: term_source");

  /* Trim the buffer size and push it. */
  GST_BUFFER_SIZE (jpegenc->output_buffer) =
      GST_ROUND_UP_4 (GST_BUFFER_SIZE (jpegenc->output_buffer) -
      jpegenc->jdest.free_in_buffer);

  g_signal_emit (G_OBJECT (jpegenc), gst_jpegenc_signals[FRAME_ENCODED], 0);

  jpegenc->last_ret = gst_pad_push (jpegenc->srcpad, jpegenc->output_buffer);
  jpegenc->output_buffer = NULL;
}

static void
gst_jpegenc_init (GstJpegEnc * jpegenc)
{
  /* create the sink and src pads */
  jpegenc->sinkpad =
      gst_pad_new_from_static_template (&gst_jpegenc_sink_pad_template, "sink");
  gst_pad_set_chain_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_chain));
  gst_pad_set_getcaps_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_getcaps));
  gst_pad_set_setcaps_function (jpegenc->sinkpad,
      GST_DEBUG_FUNCPTR (gst_jpegenc_setcaps));
  gst_element_add_pad (GST_ELEMENT (jpegenc), jpegenc->sinkpad);

  jpegenc->srcpad =
      gst_pad_new_from_static_template (&gst_jpegenc_src_pad_template, "src");
  gst_pad_use_fixed_caps (jpegenc->srcpad);
  gst_element_add_pad (GST_ELEMENT (jpegenc), jpegenc->srcpad);

  /* reset the initial video state */
  jpegenc->width = -1;
  jpegenc->height = -1;

  /* setup jpeglib */
  memset (&jpegenc->cinfo, 0, sizeof (jpegenc->cinfo));
  memset (&jpegenc->jerr, 0, sizeof (jpegenc->jerr));
  jpegenc->cinfo.err = jpeg_std_error (&jpegenc->jerr);
  jpeg_create_compress (&jpegenc->cinfo);

  jpegenc->jdest.init_destination = gst_jpegenc_init_destination;
  jpegenc->jdest.empty_output_buffer = gst_jpegenc_flush_destination;
  jpegenc->jdest.term_destination = gst_jpegenc_term_destination;
  jpegenc->cinfo.dest = &jpegenc->jdest;
  jpegenc->cinfo.client_data = jpegenc;

  /* init properties */
  jpegenc->quality = JPEG_DEFAULT_QUALITY;
  jpegenc->smoothing = JPEG_DEFAULT_SMOOTHING;
  jpegenc->idct_method = JPEG_DEFAULT_IDCT_METHOD;

  gst_jpegenc_reset (jpegenc);
}

static void
gst_jpegenc_reset (GstJpegEnc * enc)
{
  gint i, j;

  g_free (enc->line[0]);
  g_free (enc->line[1]);
  g_free (enc->line[2]);
  enc->line[0] = NULL;
  enc->line[1] = NULL;
  enc->line[2] = NULL;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 4 * DCTSIZE; j++) {
      g_free (enc->row[i][j]);
      enc->row[i][j] = NULL;
    }
  }

  enc->width = -1;
  enc->height = -1;
  enc->format = GST_VIDEO_FORMAT_UNKNOWN;
  enc->fps_den = enc->par_den = 0;
  enc->height = enc->width = 0;
}

static void
gst_jpegenc_finalize (GObject * object)
{
  GstJpegEnc *filter = GST_JPEGENC (object);

  jpeg_destroy_compress (&filter->cinfo);

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static GstCaps *
gst_jpegenc_getcaps (GstPad * pad)
{
  GstJpegEnc *jpegenc = GST_JPEGENC (gst_pad_get_parent (pad));
  GstCaps *caps, *othercaps;
  const GstCaps *templ;
{'fraction_non_alphanumeric': 0.10372748179379072, 'fraction_numerical': 0.009486393254120352, 'mean_word_length': 4.662778079218665, 'pattern_counts': {'":': 0, '<': 33, '<?xml version=': 0, '>': 162, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1032215', 'n_tokens_mistral': 8270, 'n_tokens_neox': 8208, 'n_words': 1602}