mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-21 03:20:22 +00:00
1e95c03c7d
The patch adds a serios of changes to support dynamic resolution change and efficient utilization of resources. Major changes: -- Use MSDK's apis to retrieve the headers instead of only relying on upsteram notification. For eg: avc decoder requires SEI header information for dpb count calculation which we don't get from caps. -- For all codecs other than VP9, we force the reset of decoder if resoultion changes to fit with gstreamer flow. VP9 enfource the hard reset only if the new resolution is bigger. -- delay the src caps setting till msdk api's invokation in handle_frame to avoid caching multiple configuration values -- ensure pool negotiation is based on decoder's allocation_caps. --dynamic resoluttion change use an explicit allocation_query to reclaim the buffers before closing the decoder (thanks to v4l2dec) --In case if we don't get upstream notification of res change (for eg, this can can happen for vp9 frames with ivfheader where ivfparse is not able to notify the dynamic changes), we handle the the case based on MFX_ERR_INCOMPATIBLE_VIDEO_PARAM which is the return value of MFXVideoDECODE_DecodeFrameAsync -- calculate the minimum surfaces to be preallocated based on msdk suggestion, downstream requirement, async depth and scratch surface count for smooth display. https://bugzilla.gnome.org/show_bug.cgi?id=796566
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
/* GStreamer Intel MSDK plugin
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* Copyright (c) 2018, Intel Corporation
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* All rights reserved.
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*
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* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGDECE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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#ifdef HAVE_MFX_MFXVP9_H
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# include <mfx/mfxplugin.h>
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# include <mfx/mfxvp9.h>
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#else
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# include "mfxplugin.h"
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# include "mfxvp9.h"
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#endif
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#include "gstmsdkvp9dec.h"
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GST_DEBUG_CATEGORY_EXTERN (gst_msdkvp9dec_debug);
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#define GST_CAT_DEFAULT gst_msdkvp9dec_debug
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static GstStaticPadTemplate sink_factory = 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 ("video/x-vp9")
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);
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#define gst_msdkvp9dec_parent_class parent_class
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G_DEFINE_TYPE (GstMsdkVP9Dec, gst_msdkvp9dec, GST_TYPE_MSDKDEC);
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static gboolean
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gst_msdkvp9dec_configure (GstMsdkDec * decoder)
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{
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GstMsdkVP9Dec *vp9dec = GST_MSDKVP9DEC (decoder);
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mfxSession session;
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mfxStatus status;
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const mfxPluginUID *uid;
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session = gst_msdk_context_get_session (decoder->context);
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uid = &MFX_PLUGINID_VP9D_HW;
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status = MFXVideoUSER_Load (session, uid, 1);
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if (status < MFX_ERR_NONE) {
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GST_ERROR_OBJECT (vp9dec, "Media SDK Plugin load failed (%s)",
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msdk_status_to_string (status));
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return FALSE;
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} else if (status > MFX_ERR_NONE) {
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GST_WARNING_OBJECT (vp9dec, "Media SDK Plugin load warning: %s",
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msdk_status_to_string (status));
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}
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decoder->param.mfx.CodecId = MFX_CODEC_VP9;
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/* Replaced with width and height rounded up to 16 */
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decoder->param.mfx.FrameInfo.Width =
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GST_ROUND_UP_16 (decoder->param.mfx.FrameInfo.CropW);
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decoder->param.mfx.FrameInfo.Height =
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GST_ROUND_UP_16 (decoder->param.mfx.FrameInfo.CropH);
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decoder->force_reset_on_res_change = FALSE;
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return TRUE;
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}
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static void
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gst_msdkvp9dec_class_init (GstMsdkVP9DecClass * klass)
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{
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GstElementClass *element_class;
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GstMsdkDecClass *decoder_class;
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element_class = GST_ELEMENT_CLASS (klass);
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decoder_class = GST_MSDKDEC_CLASS (klass);
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decoder_class->configure = GST_DEBUG_FUNCPTR (gst_msdkvp9dec_configure);
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gst_element_class_set_static_metadata (element_class,
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"Intel MSDK VP9 decoder",
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"Codec/Decoder/Video",
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"VP9 video decoder based on Intel Media SDK",
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"Sreerenj Balachandran <sreerenj.balachandran@intel.com>");
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gst_element_class_add_static_pad_template (element_class, &sink_factory);
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}
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static void
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gst_msdkvp9dec_init (GstMsdkVP9Dec * thiz)
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{
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}
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