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55c0d7205d
The gst-msdk decoders prefer packetized streams as input and in this case we can avoid unnecessary input bitstream copy to mfxBitstream. This works fine for codecs like h264 where we only support byte-stream with au alignment. Other format conversions should be done thorugh parsers. But this won't work for codecs like vc1 where we don't have an autoplugged parser. Even the parser is not capable to do format conversions. Packetizing through base decoders parse() routine will bring a lot of uncecessary of complexities and codecparser libraray dependency. So we just use an interal gst_adaper to keep track of bitstream which is not consumed by msdk durig AsynchronusDecoding. This adapter will get used only if subclass implementations set the "is_packetized" to FALSE for msdk base encoder. https://bugzilla.gnome.org/show_bug.cgi?id=792589
108 lines
3.3 KiB
C
108 lines
3.3 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 NEGLIGENCE
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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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#ifndef __GST_MSDKDEC_H__
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#define __GST_MSDKDEC_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include "msdk.h"
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#include "gstmsdkcontext.h"
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G_BEGIN_DECLS
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#define GST_TYPE_MSDKDEC \
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(gst_msdkdec_get_type())
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#define GST_MSDKDEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MSDKDEC,GstMsdkDec))
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#define GST_MSDKDEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MSDKDEC,GstMsdkDecClass))
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#define GST_MSDKDEC_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_MSDKDEC,GstMsdkDecClass))
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#define GST_IS_MSDKDEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MSDKDEC))
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#define GST_IS_MSDKDEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MSDKDEC))
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typedef struct _GstMsdkDec GstMsdkDec;
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typedef struct _GstMsdkDecClass GstMsdkDecClass;
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typedef struct _MsdkDecTask MsdkDecTask;
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struct _GstMsdkDec
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{
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GstVideoDecoder element;
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/* input description */
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GstVideoCodecState *input_state;
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GstVideoInfo output_info;
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GstBufferPool *pool;
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GstVideoInfo pool_info;
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mfxFrameAllocResponse alloc_resp;
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gboolean use_video_memory;
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gboolean initialized;
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/* for packetization */
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GstAdapter *adapter;
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gboolean is_packetized;
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/* MFX context */
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GstMsdkContext *context;
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mfxVideoParam param;
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GPtrArray *extra_params;
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GArray *tasks;
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guint next_task;
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GList *decoded_msdk_surfaces;
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GList *locked_buffer;
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/* element properties */
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gboolean hardware;
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guint async_depth;
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};
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struct _GstMsdkDecClass
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{
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GstVideoDecoderClass parent_class;
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gboolean (*configure) (GstMsdkDec * decoder);
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};
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struct _MsdkDecTask
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{
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mfxFrameSurface1 *surface;
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mfxSyncPoint sync_point;
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};
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GType gst_msdkdec_get_type (void);
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G_END_DECLS
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#endif /* __GST_MSDKDEC_H__ */
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