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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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79d11c2022
New plugin with an element for H.264 decoding with VA-API. This novel approach, different from gstreamer-vaapi, uses gstcodecs library for state handling. The code is expected to looks cleaner because it uses VA-API without further layers or wrappers. * It uses the first supported DRM device as default VA display (other displays will be supported through user's GstContext) * Requires libva >= 1.6 * No multiview/stereo profiles neither interlaced streams because gstcodecs doesn't handle them yet * It is incompatible with gstreamer-vaapi * Even if memory:VAMemory is exposed, it is not handled yet by any other element * Caps templates are generated dynamically querying VAAPI, but YV12 and I420 are added for system memory caps because they seem to be supported for all the drivers when downloading frames onto main memory, as they are used by xvimagesink and others, avoiding color conversion. * Surfaces aren't bounded to context, so they can grow beyond the DBP size, allowing smooth reverse playback. * There isn't yet error handling and recovery. * 10-bit H.264 streams aren't supported by libva. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1379>
75 lines
3.3 KiB
C
75 lines
3.3 KiB
C
/* GStreamer
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* Copyright (C) 2020 Igalia, S.L.
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* Author: Víctor Jáquez <vjaquez@igalia.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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#pragma once
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#include "gstvadisplay.h"
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G_BEGIN_DECLS
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typedef struct _GstVaDecodePicture GstVaDecodePicture;
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struct _GstVaDecodePicture
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{
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GArray *buffers;
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GArray *slices;
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VASurfaceID surface;
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};
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#define GST_TYPE_VA_DECODER (gst_va_decoder_get_type())
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G_DECLARE_FINAL_TYPE (GstVaDecoder, gst_va_decoder, GST, VA_DECODER, GstObject)
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GstVaDecoder * gst_va_decoder_new (GstVaDisplay * display,
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guint32 codec);
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gboolean gst_va_decoder_open (GstVaDecoder * self,
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VAProfile profile,
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guint rt_format);
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gboolean gst_va_decoder_close (GstVaDecoder * self);
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gboolean gst_va_decoder_is_open (GstVaDecoder * self);
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gboolean gst_va_decoder_set_format (GstVaDecoder * self,
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gint coded_width,
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gint coded_height,
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GArray * surfaces);
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GstCaps * gst_va_decoder_get_srcpad_caps (GstVaDecoder * self);
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GstCaps * gst_va_decoder_get_sinkpad_caps (GstVaDecoder * self);
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gboolean gst_va_decoder_has_profile (GstVaDecoder * self,
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VAProfile profile);
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gint gst_va_decoder_get_mem_types (GstVaDecoder * self);
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gboolean gst_va_decoder_add_param_buffer (GstVaDecoder * self,
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GstVaDecodePicture * pic,
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gint type,
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gpointer data,
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gsize size);
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gboolean gst_va_decoder_add_slice_buffer (GstVaDecoder * self,
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GstVaDecodePicture * pic,
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gpointer params_data,
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gsize params_size,
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gpointer slice_data,
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gsize slice_size);
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gboolean gst_va_decoder_decode (GstVaDecoder * self,
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GstVaDecodePicture * pic);
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gboolean gst_va_decoder_destroy_buffers (GstVaDecoder * self,
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GstVaDecodePicture * pic);
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GstVaDecodePicture * gst_va_decoder_new_decode_picture (GstVaDecoder * self,
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VASurfaceID surface);
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void gst_va_decode_picture_free (GstVaDecodePicture * pic);
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G_END_DECLS
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