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649d59b88b
The avvideocompare element compares two incoming video buffers using the specified comparison method (e.g. ssim or psnr). The first video buffer is passthrough, unchanged. The comparison is calculated by using libav's ssim or psnr filters. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3366>
176 lines
4.2 KiB
C
176 lines
4.2 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/* First, include the header file for the plugin, to bring in the
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* object definition and other useful things.
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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 <stdio.h>
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#include <string.h>
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#include <gst/gst.h>
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#include "gstav.h"
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#include "gstavutils.h"
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#include "gstavcfg.h"
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#ifdef GST_LIBAV_ENABLE_GPL
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#define LICENSE "GPL"
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#else
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#define LICENSE "LGPL"
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#endif
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GST_DEBUG_CATEGORY (ffmpeg_debug);
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static GMutex gst_avcodec_mutex;
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/*
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* Check for FFmpeg-provided libavcodec/format
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*/
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static inline gboolean
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gst_ffmpeg_avcodec_is_ffmpeg (void)
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{
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guint av_version = avcodec_version ();
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GST_DEBUG ("Using libavcodec version %d.%d.%d",
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av_version >> 16, (av_version & 0x00ff00) >> 8, av_version & 0xff);
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/* FFmpeg *_MICRO versions start at 100 and Libav's at 0 */
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if ((av_version & 0xff) < 100)
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return FALSE;
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return TRUE;
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}
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int
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gst_ffmpeg_avcodec_open (AVCodecContext * avctx, const AVCodec * codec)
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{
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int ret;
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g_mutex_lock (&gst_avcodec_mutex);
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ret = avcodec_open2 (avctx, codec, NULL);
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g_mutex_unlock (&gst_avcodec_mutex);
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return ret;
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}
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int
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gst_ffmpeg_avcodec_close (AVCodecContext * avctx)
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{
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int ret;
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g_mutex_lock (&gst_avcodec_mutex);
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ret = avcodec_close (avctx);
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g_mutex_unlock (&gst_avcodec_mutex);
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return ret;
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}
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int
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gst_ffmpeg_av_find_stream_info (AVFormatContext * ic)
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{
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int ret;
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g_mutex_lock (&gst_avcodec_mutex);
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ret = avformat_find_stream_info (ic, NULL);
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g_mutex_unlock (&gst_avcodec_mutex);
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return ret;
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}
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#ifndef GST_DISABLE_GST_DEBUG
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static void
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gst_ffmpeg_log_callback (void *ptr, int level, const char *fmt, va_list vl)
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{
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GstDebugLevel gst_level;
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gint len = strlen (fmt);
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gchar *fmt2 = NULL;
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switch (level) {
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case AV_LOG_QUIET:
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gst_level = GST_LEVEL_NONE;
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break;
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case AV_LOG_ERROR:
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gst_level = GST_LEVEL_ERROR;
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break;
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case AV_LOG_INFO:
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gst_level = GST_LEVEL_INFO;
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break;
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case AV_LOG_DEBUG:
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gst_level = GST_LEVEL_DEBUG;
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break;
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default:
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gst_level = GST_LEVEL_INFO;
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break;
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}
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/* remove trailing newline as it gets already appended by the logger */
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if (fmt[len - 1] == '\n') {
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fmt2 = g_strdup (fmt);
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fmt2[len - 1] = '\0';
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}
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gst_debug_log_valist (ffmpeg_debug, gst_level, "", "", 0, NULL,
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fmt2 ? fmt2 : fmt, vl);
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g_free (fmt2);
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}
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#endif
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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GST_DEBUG_CATEGORY_INIT (ffmpeg_debug, "libav", 0, "libav elements");
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/* Bail if not FFmpeg. We can no longer ensure operation with Libav */
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if (!gst_ffmpeg_avcodec_is_ffmpeg ()) {
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GST_ERROR_OBJECT (plugin,
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"Incompatible, non-FFmpeg libavcodec/format found");
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return FALSE;
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}
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#ifndef GST_DISABLE_GST_DEBUG
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av_log_set_callback (gst_ffmpeg_log_callback);
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#endif
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gst_ffmpeg_init_pix_fmt_info ();
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/* build global ffmpeg param/property info */
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gst_ffmpeg_cfg_init ();
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gst_ffmpegaudenc_register (plugin);
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gst_ffmpegvidenc_register (plugin);
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gst_ffmpegauddec_register (plugin);
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gst_ffmpegviddec_register (plugin);
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gst_ffmpegdemux_register (plugin);
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gst_ffmpegmux_register (plugin);
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gst_ffmpegdeinterlace_register (plugin);
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gst_ffmpegvidcmp_register (plugin);
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/* Now we can return the pointer to the newly created Plugin object. */
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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libav,
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"All libav codecs and formats (" LIBAV_SOURCE ")",
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plugin_init, PACKAGE_VERSION, LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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