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b756b13ee2
MSDK supports JPEG YUY2 (422 chroma) output color format. The color format of input bitstream is described by JPEGChromaFormat and JPEGColorFormat fields in the mfxInfoMFX structure which is filled in by the MFXVideoDECODE_DecodeHeader function. To obtain lossless decoded output from 422 encoded JPEGs, we must set the output color format in the FourCC and ChromaFormat fields in the mfxFrameInfo structure to the appropriate values at post_configure so that they are propagated through to the srcpad caps accordingly.
128 lines
4.6 KiB
C
128 lines
4.6 KiB
C
/* GStreamer Intel MSDK plugin
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* Copyright (c) 2016, Intel Corporation
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* All rights reserved.
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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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#include <mfxstructures.h>
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#include <mfxjpeg.h>
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#include "gstmsdkmjpegdec.h"
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#include "gstmsdkvideomemory.h"
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#include <gst/pbutils/pbutils.h>
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GST_DEBUG_CATEGORY_EXTERN (gst_msdkmjpegdec_debug);
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#define GST_CAT_DEFAULT gst_msdkmjpegdec_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 ("image/jpeg, "
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"width = (int) [ 1, MAX ], height = (int) [ 1, MAX ], parsed = true ")
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);
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static GstStaticPadTemplate src_factory = 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 ("video/x-raw, "
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"format = (string) { NV12, YUY2 }, "
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"framerate = (fraction) [0, MAX], "
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"width = (int) [ 1, MAX ], height = (int) [ 1, MAX ],"
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"interlace-mode = (string) progressive;"
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_DMABUF,
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"{ NV12, YUY2 }") ";")
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);
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#define gst_msdkmjpegdec_parent_class parent_class
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G_DEFINE_TYPE (GstMsdkMJPEGDec, gst_msdkmjpegdec, GST_TYPE_MSDKDEC);
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static gboolean
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gst_msdkmjpegdec_configure (GstMsdkDec * decoder)
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{
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decoder->param.mfx.CodecId = MFX_CODEC_JPEG;
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/* HACK to make sure MSDK won't crash while handling non-interleaved samples */
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/* setting MFX_SCANTYPE_UNKNOWN (== 0) causing issues for
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non-interleaved samples. Usage of MFXVideoDECODE_DecodeHeader
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also doesn't seems to fix the issue. But even if we hardcode
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the InterleaveDec to MFX_SCANTYPE_NONINTERLEAVED, msdk seems to be taking care
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of Interleaved samples, so let's hardcode it for now */
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decoder->param.mfx.InterleavedDec = MFX_SCANTYPE_NONINTERLEAVED;
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return TRUE;
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}
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static gboolean
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gst_msdkmjpegdec_post_configure (GstMsdkDec * decoder)
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{
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/* Set the output color format based on the input color format */
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switch (decoder->param.mfx.JPEGChromaFormat) {
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case MFX_CHROMAFORMAT_YUV422:
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decoder->param.mfx.FrameInfo.FourCC = MFX_FOURCC_YUY2;
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decoder->param.mfx.FrameInfo.ChromaFormat =
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decoder->param.mfx.JPEGChromaFormat;
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break;
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default:
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break;
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}
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return TRUE;
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}
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static void
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gst_msdkmjpegdec_class_init (GstMsdkMJPEGDecClass * 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_msdkmjpegdec_configure);
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decoder_class->post_configure =
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GST_DEBUG_FUNCPTR (gst_msdkmjpegdec_post_configure);
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gst_element_class_set_static_metadata (element_class,
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"Intel MSDK MJPEG decoder",
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"Codec/Decoder/Video/Hardware",
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"MJPEG video decoder based on Intel Media SDK",
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"Scott D Phillips <scott.d.phillips@intel.com>");
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gst_element_class_add_static_pad_template (element_class, &sink_factory);
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gst_element_class_add_static_pad_template (element_class, &src_factory);
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}
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static void
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gst_msdkmjpegdec_init (GstMsdkMJPEGDec * thiz)
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{
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}
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