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1944564d76
GstVideoEncoder takes care of the Meta copy, so there is no need in jpegenc Fixes http://gstreamer-devel.966125.n4.nabble.com/jpegenc-copy-GstMeta-twice-tt4693981.html Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/576>
657 lines
20 KiB
C
657 lines
20 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2012 Collabora Ltd.
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* Author : Edward Hervey <edward@collabora.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-jpegenc
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* @title: jpegenc
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*
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* Encodes jpeg images.
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*
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* ## Example launch line
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* |[
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* gst-launch-1.0 videotestsrc num-buffers=50 ! video/x-raw, framerate='(fraction)'5/1 ! jpegenc ! avimux ! filesink location=mjpeg.avi
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* ]| a pipeline to mux 5 JPEG frames per second into a 10 sec. long motion jpeg
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* avi.
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*
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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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#include "gstjpegenc.h"
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#include "gstjpeg.h"
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#include <gst/video/video.h>
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#include <gst/video/gstvideometa.h>
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#include <gst/base/base.h>
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/* experimental */
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/* setting smoothig seems to have no effect in libjepeg
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#define ENABLE_SMOOTHING 1
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*/
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GST_DEBUG_CATEGORY_STATIC (jpegenc_debug);
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#define GST_CAT_DEFAULT jpegenc_debug
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#define JPEG_DEFAULT_QUALITY 85
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#define JPEG_DEFAULT_SMOOTHING 0
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#define JPEG_DEFAULT_IDCT_METHOD JDCT_FASTEST
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#define JPEG_DEFAULT_SNAPSHOT FALSE
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/* JpegEnc signals and args */
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enum
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{
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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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{
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PROP_0,
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PROP_QUALITY,
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PROP_SMOOTHING,
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PROP_IDCT_METHOD,
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PROP_SNAPSHOT
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};
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static void gst_jpegenc_finalize (GObject * object);
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static void gst_jpegenc_resync (GstJpegEnc * jpegenc);
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static void gst_jpegenc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_jpegenc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_jpegenc_start (GstVideoEncoder * benc);
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static gboolean gst_jpegenc_stop (GstVideoEncoder * benc);
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static gboolean gst_jpegenc_set_format (GstVideoEncoder * encoder,
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GstVideoCodecState * state);
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static GstFlowReturn gst_jpegenc_handle_frame (GstVideoEncoder * encoder,
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GstVideoCodecFrame * frame);
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static gboolean gst_jpegenc_propose_allocation (GstVideoEncoder * encoder,
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GstQuery * query);
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/* static guint gst_jpegenc_signals[LAST_SIGNAL] = { 0 }; */
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#define gst_jpegenc_parent_class parent_class
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G_DEFINE_TYPE (GstJpegEnc, gst_jpegenc, GST_TYPE_VIDEO_ENCODER);
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/* *INDENT-OFF* */
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static GstStaticPadTemplate gst_jpegenc_sink_pad_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
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("{ I420, YV12, YUY2, UYVY, Y41B, Y42B, YVYU, Y444, NV21, "
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"NV12, RGB, BGR, RGBx, xRGB, BGRx, xBGR, GRAY8 }"))
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);
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/* *INDENT-ON* */
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static GstStaticPadTemplate gst_jpegenc_src_pad_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("image/jpeg, "
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"width = (int) [ 16, 65535 ], "
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"height = (int) [ 16, 65535 ], "
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"framerate = (fraction) [ 0/1, MAX ], "
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"sof-marker = (int) { 0, 1, 2, 4, 9 }")
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);
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static void
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gst_jpegenc_class_init (GstJpegEncClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *element_class;
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GstVideoEncoderClass *venc_class;
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gobject_class = (GObjectClass *) klass;
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element_class = (GstElementClass *) klass;
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venc_class = (GstVideoEncoderClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_jpegenc_finalize;
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gobject_class->set_property = gst_jpegenc_set_property;
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gobject_class->get_property = gst_jpegenc_get_property;
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g_object_class_install_property (gobject_class, PROP_QUALITY,
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g_param_spec_int ("quality", "Quality", "Quality of encoding",
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0, 100, JPEG_DEFAULT_QUALITY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_PLAYING));
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#ifdef ENABLE_SMOOTHING
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/* disabled, since it doesn't seem to work */
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g_object_class_install_property (gobject_class, PROP_SMOOTHING,
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g_param_spec_int ("smoothing", "Smoothing", "Smoothing factor",
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0, 100, JPEG_DEFAULT_SMOOTHING,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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#endif
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g_object_class_install_property (gobject_class, PROP_IDCT_METHOD,
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g_param_spec_enum ("idct-method", "IDCT Method",
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"The IDCT algorithm to use", GST_TYPE_IDCT_METHOD,
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JPEG_DEFAULT_IDCT_METHOD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstJpegEnc:snapshot:
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*
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* Send EOS after encoding a frame, useful for snapshots.
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*
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* Since: 1.14
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*/
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g_object_class_install_property (gobject_class, PROP_SNAPSHOT,
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g_param_spec_boolean ("snapshot", "Snapshot",
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"Send EOS after encoding a frame, useful for snapshots",
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JPEG_DEFAULT_SNAPSHOT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_static_pad_template (element_class,
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&gst_jpegenc_sink_pad_template);
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gst_element_class_add_static_pad_template (element_class,
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&gst_jpegenc_src_pad_template);
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gst_element_class_set_static_metadata (element_class, "JPEG image encoder",
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"Codec/Encoder/Image", "Encode images in JPEG format",
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"Wim Taymans <wim.taymans@tvd.be>");
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venc_class->start = gst_jpegenc_start;
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venc_class->stop = gst_jpegenc_stop;
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venc_class->set_format = gst_jpegenc_set_format;
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venc_class->handle_frame = gst_jpegenc_handle_frame;
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venc_class->propose_allocation = gst_jpegenc_propose_allocation;
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GST_DEBUG_CATEGORY_INIT (jpegenc_debug, "jpegenc", 0,
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"JPEG encoding element");
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}
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static void
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gst_jpegenc_init_destination (j_compress_ptr cinfo)
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{
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GST_DEBUG ("gst_jpegenc_chain: init_destination");
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}
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static void
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ensure_memory (GstJpegEnc * jpegenc)
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{
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GstMemory *new_memory;
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GstMapInfo map;
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gsize old_size, desired_size, new_size;
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guint8 *new_data;
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static GstAllocationParams params = { 0, 3, 0, 0, };
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old_size = jpegenc->output_map.size;
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if (old_size == 0)
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desired_size = jpegenc->bufsize;
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else
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desired_size = old_size * 2;
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/* Our output memory wasn't big enough.
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* Make a new memory that's twice the size, */
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new_memory = gst_allocator_alloc (NULL, desired_size, ¶ms);
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gst_memory_map (new_memory, &map, GST_MAP_READWRITE);
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new_data = map.data;
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new_size = map.size;
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/* copy previous data if any */
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if (jpegenc->output_mem) {
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memcpy (new_data, jpegenc->output_map.data, old_size);
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gst_memory_unmap (jpegenc->output_mem, &jpegenc->output_map);
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gst_memory_unref (jpegenc->output_mem);
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}
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/* drop it into place, */
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jpegenc->output_mem = new_memory;
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jpegenc->output_map = map;
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/* and last, update libjpeg on where to work. */
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jpegenc->jdest.next_output_byte = new_data + old_size;
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jpegenc->jdest.free_in_buffer = new_size - old_size;
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}
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static boolean
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gst_jpegenc_flush_destination (j_compress_ptr cinfo)
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{
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GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
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GST_DEBUG_OBJECT (jpegenc,
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"gst_jpegenc_chain: flush_destination: buffer too small");
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ensure_memory (jpegenc);
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return TRUE;
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}
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static void
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gst_jpegenc_term_destination (j_compress_ptr cinfo)
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{
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GstBuffer *outbuf;
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GstJpegEnc *jpegenc = (GstJpegEnc *) (cinfo->client_data);
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gsize memory_size = jpegenc->output_map.size - jpegenc->jdest.free_in_buffer;
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GstByteReader reader =
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GST_BYTE_READER_INIT (jpegenc->output_map.data, memory_size);
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guint16 marker;
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gint sof_marker = -1;
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GST_DEBUG_OBJECT (jpegenc, "gst_jpegenc_chain: term_source");
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/* Find the SOF marker */
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while (gst_byte_reader_get_uint16_be (&reader, &marker)) {
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/* SOF marker */
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if (marker >> 4 == 0x0ffc) {
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sof_marker = marker & 0x4;
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break;
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}
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}
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gst_memory_unmap (jpegenc->output_mem, &jpegenc->output_map);
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/* Trim the buffer size. we will push it in the chain function */
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gst_memory_resize (jpegenc->output_mem, 0, memory_size);
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jpegenc->output_map.data = NULL;
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jpegenc->output_map.size = 0;
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if (jpegenc->sof_marker != sof_marker || jpegenc->input_caps_changed) {
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GstVideoCodecState *output;
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output =
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gst_video_encoder_set_output_state (GST_VIDEO_ENCODER (jpegenc),
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gst_caps_new_simple ("image/jpeg", "sof-marker", G_TYPE_INT, sof_marker,
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NULL), jpegenc->input_state);
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gst_video_codec_state_unref (output);
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jpegenc->sof_marker = sof_marker;
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jpegenc->input_caps_changed = FALSE;
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}
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outbuf = gst_buffer_new ();
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gst_buffer_append_memory (outbuf, jpegenc->output_mem);
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jpegenc->output_mem = NULL;
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jpegenc->current_frame->output_buffer = outbuf;
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gst_video_frame_unmap (&jpegenc->current_vframe);
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GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (jpegenc->current_frame);
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jpegenc->res = gst_video_encoder_finish_frame (GST_VIDEO_ENCODER (jpegenc),
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jpegenc->current_frame);
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jpegenc->current_frame = NULL;
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}
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static void
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gst_jpegenc_init (GstJpegEnc * jpegenc)
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{
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GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_ENCODER_SINK_PAD (jpegenc));
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/* setup jpeglib */
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memset (&jpegenc->cinfo, 0, sizeof (jpegenc->cinfo));
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memset (&jpegenc->jerr, 0, sizeof (jpegenc->jerr));
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jpegenc->cinfo.err = jpeg_std_error (&jpegenc->jerr);
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jpeg_create_compress (&jpegenc->cinfo);
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jpegenc->jdest.init_destination = gst_jpegenc_init_destination;
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jpegenc->jdest.empty_output_buffer = gst_jpegenc_flush_destination;
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jpegenc->jdest.term_destination = gst_jpegenc_term_destination;
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jpegenc->cinfo.dest = &jpegenc->jdest;
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jpegenc->cinfo.client_data = jpegenc;
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/* init properties */
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jpegenc->quality = JPEG_DEFAULT_QUALITY;
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jpegenc->smoothing = JPEG_DEFAULT_SMOOTHING;
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jpegenc->idct_method = JPEG_DEFAULT_IDCT_METHOD;
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jpegenc->snapshot = JPEG_DEFAULT_SNAPSHOT;
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}
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static void
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gst_jpegenc_finalize (GObject * object)
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{
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GstJpegEnc *filter = GST_JPEGENC (object);
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jpeg_destroy_compress (&filter->cinfo);
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if (filter->input_state)
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gst_video_codec_state_unref (filter->input_state);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_jpegenc_set_format (GstVideoEncoder * encoder, GstVideoCodecState * state)
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{
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GstJpegEnc *enc = GST_JPEGENC (encoder);
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gint i;
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GstVideoInfo *info = &state->info;
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if (enc->input_state)
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gst_video_codec_state_unref (enc->input_state);
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enc->input_state = gst_video_codec_state_ref (state);
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/* prepare a cached image description */
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enc->channels = GST_VIDEO_INFO_N_COMPONENTS (info);
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/* ... but any alpha is disregarded in encoding */
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if (GST_VIDEO_INFO_IS_GRAY (info))
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enc->channels = 1;
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enc->h_max_samp = 0;
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enc->v_max_samp = 0;
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for (i = 0; i < enc->channels; ++i) {
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enc->cwidth[i] = GST_VIDEO_INFO_COMP_WIDTH (info, i);
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enc->cheight[i] = GST_VIDEO_INFO_COMP_HEIGHT (info, i);
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enc->inc[i] = GST_VIDEO_INFO_COMP_PSTRIDE (info, i);
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enc->h_samp[i] =
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GST_ROUND_UP_4 (GST_VIDEO_INFO_WIDTH (info)) / enc->cwidth[i];
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enc->h_max_samp = MAX (enc->h_max_samp, enc->h_samp[i]);
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enc->v_samp[i] =
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GST_ROUND_UP_4 (GST_VIDEO_INFO_HEIGHT (info)) / enc->cheight[i];
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enc->v_max_samp = MAX (enc->v_max_samp, enc->v_samp[i]);
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}
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/* samp should only be 1, 2 or 4 */
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g_assert (enc->h_max_samp <= 4);
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g_assert (enc->v_max_samp <= 4);
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/* now invert */
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/* maximum is invariant, as one of the components should have samp 1 */
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for (i = 0; i < enc->channels; ++i) {
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GST_DEBUG ("%d %d", enc->h_samp[i], enc->h_max_samp);
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enc->h_samp[i] = enc->h_max_samp / enc->h_samp[i];
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enc->v_samp[i] = enc->v_max_samp / enc->v_samp[i];
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}
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enc->planar = (enc->inc[0] == 1 && enc->inc[1] == 1 && enc->inc[2] == 1);
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enc->input_caps_changed = TRUE;
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gst_jpegenc_resync (enc);
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return TRUE;
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}
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static void
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gst_jpegenc_resync (GstJpegEnc * jpegenc)
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{
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GstVideoInfo *info;
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gint width, height;
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gint i, j;
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GST_DEBUG_OBJECT (jpegenc, "resync");
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if (!jpegenc->input_state)
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return;
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info = &jpegenc->input_state->info;
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jpegenc->cinfo.image_width = width = GST_VIDEO_INFO_WIDTH (info);
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jpegenc->cinfo.image_height = height = GST_VIDEO_INFO_HEIGHT (info);
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jpegenc->cinfo.input_components = jpegenc->channels;
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GST_DEBUG_OBJECT (jpegenc, "width %d, height %d", width, height);
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GST_DEBUG_OBJECT (jpegenc, "format %d", GST_VIDEO_INFO_FORMAT (info));
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if (GST_VIDEO_INFO_IS_RGB (info)) {
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GST_DEBUG_OBJECT (jpegenc, "RGB");
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jpegenc->cinfo.in_color_space = JCS_RGB;
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} else if (GST_VIDEO_INFO_IS_GRAY (info)) {
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GST_DEBUG_OBJECT (jpegenc, "gray");
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jpegenc->cinfo.in_color_space = JCS_GRAYSCALE;
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} else {
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GST_DEBUG_OBJECT (jpegenc, "YUV");
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jpegenc->cinfo.in_color_space = JCS_YCbCr;
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}
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/* input buffer size as max output */
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jpegenc->bufsize = GST_VIDEO_INFO_SIZE (info);
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jpeg_set_defaults (&jpegenc->cinfo);
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jpegenc->cinfo.raw_data_in = TRUE;
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/* duh, libjpeg maps RGB to YUV ... and don't expect some conversion */
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if (jpegenc->cinfo.in_color_space == JCS_RGB)
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jpeg_set_colorspace (&jpegenc->cinfo, JCS_RGB);
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GST_DEBUG_OBJECT (jpegenc, "h_max_samp=%d, v_max_samp=%d",
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jpegenc->h_max_samp, jpegenc->v_max_samp);
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/* image dimension info */
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for (i = 0; i < jpegenc->channels; i++) {
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GST_DEBUG_OBJECT (jpegenc, "comp %i: h_samp=%d, v_samp=%d", i,
|
|
jpegenc->h_samp[i], jpegenc->v_samp[i]);
|
|
jpegenc->cinfo.comp_info[i].h_samp_factor = jpegenc->h_samp[i];
|
|
jpegenc->cinfo.comp_info[i].v_samp_factor = jpegenc->v_samp[i];
|
|
g_free (jpegenc->line[i]);
|
|
jpegenc->line[i] = g_new (guchar *, jpegenc->v_max_samp * DCTSIZE);
|
|
if (!jpegenc->planar) {
|
|
for (j = 0; j < jpegenc->v_max_samp * DCTSIZE; j++) {
|
|
g_free (jpegenc->row[i][j]);
|
|
jpegenc->row[i][j] = g_malloc (width);
|
|
jpegenc->line[i][j] = jpegenc->row[i][j];
|
|
}
|
|
}
|
|
}
|
|
|
|
/* guard against a potential error in gst_jpegenc_term_destination
|
|
which occurs iff bufsize % 4 < free_space_remaining */
|
|
jpegenc->bufsize = GST_ROUND_UP_4 (jpegenc->bufsize);
|
|
|
|
jpeg_suppress_tables (&jpegenc->cinfo, TRUE);
|
|
|
|
GST_DEBUG_OBJECT (jpegenc, "resync done");
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_jpegenc_handle_frame (GstVideoEncoder * encoder, GstVideoCodecFrame * frame)
|
|
{
|
|
GstJpegEnc *jpegenc;
|
|
guint height;
|
|
guchar *base[3], *end[3];
|
|
guint stride[3];
|
|
gint i, j, k;
|
|
static GstAllocationParams params = { 0, 0, 0, 3, };
|
|
|
|
jpegenc = GST_JPEGENC (encoder);
|
|
|
|
GST_LOG_OBJECT (jpegenc, "got new frame");
|
|
|
|
if (!gst_video_frame_map (&jpegenc->current_vframe,
|
|
&jpegenc->input_state->info, frame->input_buffer, GST_MAP_READ))
|
|
goto invalid_frame;
|
|
|
|
jpegenc->current_frame = frame;
|
|
|
|
height = GST_VIDEO_INFO_HEIGHT (&jpegenc->input_state->info);
|
|
|
|
for (i = 0; i < jpegenc->channels; i++) {
|
|
base[i] = GST_VIDEO_FRAME_COMP_DATA (&jpegenc->current_vframe, i);
|
|
stride[i] = GST_VIDEO_FRAME_COMP_STRIDE (&jpegenc->current_vframe, i);
|
|
end[i] =
|
|
base[i] + GST_VIDEO_FRAME_COMP_HEIGHT (&jpegenc->current_vframe,
|
|
i) * stride[i];
|
|
}
|
|
|
|
jpegenc->res = GST_FLOW_OK;
|
|
jpegenc->output_mem = gst_allocator_alloc (NULL, jpegenc->bufsize, ¶ms);
|
|
gst_memory_map (jpegenc->output_mem, &jpegenc->output_map, GST_MAP_READWRITE);
|
|
|
|
jpegenc->jdest.next_output_byte = jpegenc->output_map.data;
|
|
jpegenc->jdest.free_in_buffer = jpegenc->output_map.size;
|
|
|
|
/* prepare for raw input */
|
|
#if JPEG_LIB_VERSION >= 70
|
|
jpegenc->cinfo.do_fancy_downsampling = FALSE;
|
|
#endif
|
|
|
|
GST_OBJECT_LOCK (jpegenc);
|
|
jpegenc->cinfo.smoothing_factor = jpegenc->smoothing;
|
|
jpegenc->cinfo.dct_method = jpegenc->idct_method;
|
|
jpeg_set_quality (&jpegenc->cinfo, jpegenc->quality, TRUE);
|
|
GST_OBJECT_UNLOCK (jpegenc);
|
|
|
|
jpeg_start_compress (&jpegenc->cinfo, TRUE);
|
|
|
|
GST_LOG_OBJECT (jpegenc, "compressing");
|
|
|
|
if (jpegenc->planar) {
|
|
for (i = 0; i < height; i += jpegenc->v_max_samp * DCTSIZE) {
|
|
for (k = 0; k < jpegenc->channels; k++) {
|
|
for (j = 0; j < jpegenc->v_samp[k] * DCTSIZE; j++) {
|
|
jpegenc->line[k][j] = base[k];
|
|
if (base[k] + stride[k] < end[k])
|
|
base[k] += stride[k];
|
|
}
|
|
}
|
|
jpeg_write_raw_data (&jpegenc->cinfo, jpegenc->line,
|
|
jpegenc->v_max_samp * DCTSIZE);
|
|
}
|
|
} else {
|
|
for (i = 0; i < height; i += jpegenc->v_max_samp * DCTSIZE) {
|
|
for (k = 0; k < jpegenc->channels; k++) {
|
|
for (j = 0; j < jpegenc->v_samp[k] * DCTSIZE; j++) {
|
|
guchar *src, *dst;
|
|
gint l;
|
|
|
|
/* ouch, copy line */
|
|
src = base[k];
|
|
dst = jpegenc->line[k][j];
|
|
for (l = jpegenc->cwidth[k]; l > 0; l--) {
|
|
*dst = *src;
|
|
src += jpegenc->inc[k];
|
|
dst++;
|
|
}
|
|
if (base[k] + stride[k] < end[k])
|
|
base[k] += stride[k];
|
|
}
|
|
}
|
|
jpeg_write_raw_data (&jpegenc->cinfo, jpegenc->line,
|
|
jpegenc->v_max_samp * DCTSIZE);
|
|
}
|
|
}
|
|
|
|
/* This will ensure that gst_jpegenc_term_destination is called */
|
|
jpeg_finish_compress (&jpegenc->cinfo);
|
|
GST_LOG_OBJECT (jpegenc, "compressing done");
|
|
|
|
return (jpegenc->snapshot) ? GST_FLOW_EOS : jpegenc->res;
|
|
|
|
invalid_frame:
|
|
{
|
|
GST_WARNING_OBJECT (jpegenc, "invalid frame received");
|
|
return gst_video_encoder_finish_frame (encoder, frame);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_jpegenc_propose_allocation (GstVideoEncoder * encoder, GstQuery * query)
|
|
{
|
|
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
|
|
|
|
return GST_VIDEO_ENCODER_CLASS (parent_class)->propose_allocation (encoder,
|
|
query);
|
|
}
|
|
|
|
static void
|
|
gst_jpegenc_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstJpegEnc *jpegenc = GST_JPEGENC (object);
|
|
|
|
GST_OBJECT_LOCK (jpegenc);
|
|
|
|
switch (prop_id) {
|
|
case PROP_QUALITY:
|
|
jpegenc->quality = g_value_get_int (value);
|
|
break;
|
|
#ifdef ENABLE_SMOOTHING
|
|
case PROP_SMOOTHING:
|
|
jpegenc->smoothing = g_value_get_int (value);
|
|
break;
|
|
#endif
|
|
case PROP_IDCT_METHOD:
|
|
jpegenc->idct_method = g_value_get_enum (value);
|
|
break;
|
|
case PROP_SNAPSHOT:
|
|
jpegenc->snapshot = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (jpegenc);
|
|
}
|
|
|
|
static void
|
|
gst_jpegenc_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstJpegEnc *jpegenc = GST_JPEGENC (object);
|
|
|
|
GST_OBJECT_LOCK (jpegenc);
|
|
|
|
switch (prop_id) {
|
|
case PROP_QUALITY:
|
|
g_value_set_int (value, jpegenc->quality);
|
|
break;
|
|
#ifdef ENABLE_SMOOTHING
|
|
case PROP_SMOOTHING:
|
|
g_value_set_int (value, jpegenc->smoothing);
|
|
break;
|
|
#endif
|
|
case PROP_IDCT_METHOD:
|
|
g_value_set_enum (value, jpegenc->idct_method);
|
|
break;
|
|
case PROP_SNAPSHOT:
|
|
g_value_set_boolean (value, jpegenc->snapshot);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (jpegenc);
|
|
}
|
|
|
|
static gboolean
|
|
gst_jpegenc_start (GstVideoEncoder * benc)
|
|
{
|
|
GstJpegEnc *enc = (GstJpegEnc *) benc;
|
|
|
|
enc->line[0] = NULL;
|
|
enc->line[1] = NULL;
|
|
enc->line[2] = NULL;
|
|
enc->sof_marker = -1;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_jpegenc_stop (GstVideoEncoder * benc)
|
|
{
|
|
GstJpegEnc *enc = (GstJpegEnc *) benc;
|
|
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;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|