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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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va: Add jpegdecoder base class.
This base class is intented for hardware accelerated decoders, but since only VA uses it, it will be kept internally in va plugin. It follows the same logic as the others video decoders in the library but. as JPEG are independet images, there's no need to handle a DBP so no need of a picture object. Instead a scan object is added with all the structures required to decode the image (huffman and quant tables, mcus, etc.). Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1575>
This commit is contained in:
Víctor Manuel Jáquez Leal
GStreamer Marge Bot
parent
f36d2671e4
commit
cc30854893
3 changed files with 656 additions and 0 deletions
510
subprojects/gst-plugins-bad/sys/va/gstjpegdecoder.c
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510
subprojects/gst-plugins-bad/sys/va/gstjpegdecoder.c
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@ -0,0 +1,510 @@
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/* GStreamer
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* Copyright (C) 2022 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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/**
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* SECTION:gstjpegdecoder
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* @title: GstJpegDecoder
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* @short_description: Base class to implement stateless JPEG decoders
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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 <gst/base/base.h>
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#include "gstjpegdecoder.h"
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#define MAX_SAMPLE_FACTOR 4 /* JPEG limit on sampling factors */
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#define DCT_SIZE 8 /* The basic DCT block is 8x8 samples */
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typedef enum
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{
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GST_JPEG_DECODER_STATE_GOT_SOI = 1 << 0,
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GST_JPEG_DECODER_STATE_GOT_SOF = 1 << 1,
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GST_JPEG_DECODER_STATE_GOT_SOS = 1 << 2,
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GST_JPEG_DECODER_STATE_GOT_HUF_TABLE = 1 << 3,
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GST_JPEG_DECODER_STATE_GOT_IQ_TABLE = 1 << 4,
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GST_JPEG_DECODER_STATE_VALID_PICTURE = (GST_JPEG_DECODER_STATE_GOT_SOI |
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GST_JPEG_DECODER_STATE_GOT_SOF | GST_JPEG_DECODER_STATE_GOT_SOS),
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} GstJpegDecoderState;
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struct _GstJpegDecoderPrivate
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{
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guint state;
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guint restart_interval;
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GstJpegHuffmanTables huf_tables;
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GstJpegQuantTables quant_tables;
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GstJpegFrameHdr frame_hdr;
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guint8 max_h, max_v;
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gboolean lossless;
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};
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GST_DEBUG_CATEGORY (gst_jpeg_decoder_debug);
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#define GST_CAT_DEFAULT gst_jpeg_decoder_debug
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#define parent_class gst_jpeg_decoder_parent_clas
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G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstJpegDecoder, gst_jpeg_decoder,
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GST_TYPE_VIDEO_DECODER, G_ADD_PRIVATE (GstJpegDecoder);
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GST_DEBUG_CATEGORY_INIT (gst_jpeg_decoder_debug, "jpegdecoder", 0,
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"JPEG Image Decoder"));
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static gboolean gst_jpeg_decoder_set_format (GstVideoDecoder * decoder,
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GstVideoCodecState * state);
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static GstFlowReturn gst_jpeg_decoder_handle_frame (GstVideoDecoder * decoder,
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GstVideoCodecFrame * frame);
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static gboolean gst_jpeg_decoder_stop (GstVideoDecoder * decoder);
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static void
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gst_jpeg_decoder_class_init (GstJpegDecoderClass * klass)
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{
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GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
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decoder_class->stop = GST_DEBUG_FUNCPTR (gst_jpeg_decoder_stop);
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decoder_class->set_format = GST_DEBUG_FUNCPTR (gst_jpeg_decoder_set_format);
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decoder_class->handle_frame =
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GST_DEBUG_FUNCPTR (gst_jpeg_decoder_handle_frame);
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}
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static void
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gst_jpeg_decoder_init (GstJpegDecoder * self)
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{
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gst_video_decoder_set_packetized (GST_VIDEO_DECODER (self), TRUE);
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self->priv = gst_jpeg_decoder_get_instance_private (self);
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}
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static gboolean
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gst_jpeg_decoder_stop (GstVideoDecoder * decoder)
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{
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GstJpegDecoder *self = GST_JPEG_DECODER (decoder);
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g_clear_pointer (&self->input_state, gst_video_codec_state_unref);
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return TRUE;
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}
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static gboolean
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gst_jpeg_decoder_set_format (GstVideoDecoder * decoder,
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GstVideoCodecState * state)
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{
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GstJpegDecoder *self = GST_JPEG_DECODER (decoder);
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GST_DEBUG_OBJECT (decoder, "Set format");
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if (self->input_state)
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gst_video_codec_state_unref (self->input_state);
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self->input_state = gst_video_codec_state_ref (state);
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return TRUE;
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}
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static inline gboolean
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valid_state (guint state, guint ref_state)
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{
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return (state & ref_state) == ref_state;
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}
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static gboolean
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decode_huffman_table (GstJpegDecoder * self, GstJpegSegment * seg)
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{
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GstJpegDecoderPrivate *priv = self->priv;
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if (!gst_jpeg_segment_parse_huffman_table (seg, &priv->huf_tables)) {
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GST_ERROR_OBJECT (self, "failed to parse Huffman table");
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return FALSE;
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}
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priv->state |= GST_JPEG_DECODER_STATE_GOT_HUF_TABLE;
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return TRUE;
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}
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static gboolean
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decode_quant_table (GstJpegDecoder * self, GstJpegSegment * seg)
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{
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GstJpegDecoderPrivate *priv = self->priv;
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if (!gst_jpeg_segment_parse_quantization_table (seg, &priv->quant_tables)) {
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GST_ERROR_OBJECT (self, "failed to parse quantization table");
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return FALSE;
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}
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priv->state |= GST_JPEG_DECODER_STATE_GOT_IQ_TABLE;
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return TRUE;
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}
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static gboolean
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decode_restart_interval (GstJpegDecoder * self, GstJpegSegment * seg)
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{
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GstJpegDecoderPrivate *priv = self->priv;
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if (!gst_jpeg_segment_parse_restart_interval (seg, &priv->restart_interval)) {
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GST_ERROR_OBJECT (self, "failed to parse restart interval");
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return FALSE;
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}
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return TRUE;
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}
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static GstFlowReturn
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decode_frame (GstJpegDecoder * self, GstJpegSegment * seg,
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GstVideoCodecFrame * frame)
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{
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GstJpegDecoderPrivate *priv = self->priv;
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GstJpegDecoderClass *klass = GST_JPEG_DECODER_GET_CLASS (self);
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GstJpegFrameHdr *frame_hdr = &self->priv->frame_hdr;
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GstFlowReturn ret = GST_FLOW_OK;
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guint i;
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if (!gst_jpeg_segment_parse_frame_header (seg, frame_hdr)) {
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GST_ERROR_OBJECT (self, "failed to parse frame header");
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return GST_FLOW_ERROR;
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}
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/* A.1.1 Dimensions and sampling factors */
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priv->max_h = priv->max_v = 0;
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for (i = 0; i < frame_hdr->num_components; i++) {
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if (frame_hdr->components[i].horizontal_factor >= MAX_SAMPLE_FACTOR
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|| frame_hdr->components[i].vertical_factor >= MAX_SAMPLE_FACTOR) {
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ret = GST_FLOW_ERROR;
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GST_ERROR_OBJECT (self, "frame header with bad sampling factor");
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goto beach;
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}
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priv->max_h = MAX (priv->max_h, frame_hdr->components[i].horizontal_factor);
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priv->max_v = MAX (priv->max_v, frame_hdr->components[i].vertical_factor);
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}
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if (priv->max_h == 0 || priv->max_v == 0) {
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ret = GST_FLOW_ERROR;
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GST_ERROR_OBJECT (self, "frame header with bad sampling factor");
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goto beach;
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}
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priv->lossless = seg->marker == GST_JPEG_MARKER_SOF3;
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g_assert (klass->new_picture);
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ret = klass->new_picture (self, frame, seg->marker, &priv->frame_hdr);
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if (ret != GST_FLOW_OK) {
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GST_WARNING_OBJECT (self, "subclass failed to handle new picture");
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goto beach;
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}
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priv->state |= GST_JPEG_DECODER_STATE_GOT_SOF;
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beach:
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return ret;
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}
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static const GstJpegFrameComponent *
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get_component (const GstJpegFrameHdr * frame_hdr, guint selector)
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{
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guint i;
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for (i = 0; i < frame_hdr->num_components; i++) {
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const GstJpegFrameComponent *fcp = &frame_hdr->components[i];
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if (fcp->identifier == selector)
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return fcp;
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}
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return NULL;
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}
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static GstFlowReturn
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decode_scan (GstJpegDecoder * self, GstJpegSegment * seg)
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{
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GstJpegDecoderPrivate *priv = self->priv;
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GstJpegDecoderClass *klass = GST_JPEG_DECODER_GET_CLASS (self);
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GstJpegDecoderScan scan;
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GstJpegScanHdr scan_hdr;
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GstFlowReturn ret;
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const guint8 *data;
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guint size, scan_hdr_size;
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guint64 mcus_per_row, mcu_rows_in_scan;
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guint blocksize = priv->lossless ? 1 : DCT_SIZE;
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/* E.2.3 Control procedure for decoding a scan */
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if (!valid_state (priv->state, GST_JPEG_DECODER_STATE_GOT_SOF))
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return GST_FLOW_OK; /* ignore segment */
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if (!gst_jpeg_segment_parse_scan_header (seg, &scan_hdr)) {
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GST_ERROR_OBJECT (self, "failed to parse scan header");
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return GST_FLOW_ERROR;
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}
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if (!valid_state (priv->state, GST_JPEG_DECODER_STATE_GOT_HUF_TABLE))
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gst_jpeg_get_default_huffman_tables (&priv->huf_tables);
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if (!valid_state (priv->state, GST_JPEG_DECODER_STATE_GOT_IQ_TABLE))
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gst_jpeg_get_default_quantization_tables (&priv->quant_tables);
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/* Non-interleaved */
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if (scan_hdr.num_components == 1) {
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const guint cs = scan_hdr.components[0].component_selector;
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const GstJpegFrameComponent *fc = get_component (&priv->frame_hdr, cs);
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if (!fc || fc->horizontal_factor == 0 || fc->vertical_factor == 0) {
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GST_ERROR_OBJECT (self, "failed to validate frame component %u", cs);
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return GST_FLOW_ERROR;
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}
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mcus_per_row = gst_util_uint64_scale_int_ceil (priv->frame_hdr.width,
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fc->horizontal_factor, priv->max_h * blocksize);
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mcu_rows_in_scan = gst_util_uint64_scale_int_ceil (priv->frame_hdr.height,
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fc->vertical_factor, priv->max_v * blocksize);
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} else {
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mcus_per_row = gst_util_uint64_scale_int_ceil (priv->frame_hdr.width, 1,
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priv->max_h * blocksize);
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mcu_rows_in_scan =
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gst_util_uint64_scale_int_ceil (priv->frame_hdr.height, 1,
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priv->max_v * blocksize);
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}
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scan_hdr_size = (seg->data[seg->offset] << 8) | seg->data[seg->offset + 1];
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size = seg->size - scan_hdr_size;
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data = seg->data + seg->offset + scan_hdr_size;
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if (size <= 0)
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return GST_FLOW_ERROR;
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/* *INDENT-OFF* */
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scan = (GstJpegDecoderScan) {
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.scan_hdr = &scan_hdr,
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.huffman_tables = &priv->huf_tables,
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.quantization_tables = &priv->quant_tables,
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.restart_interval = priv->restart_interval,
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.mcus_per_row = mcus_per_row,
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.mcu_rows_in_scan = mcu_rows_in_scan,
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};
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/* *INDENT-ON* */
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g_assert (klass->decode_scan);
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ret = klass->decode_scan (self, &scan, data, size);
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if (ret == GST_FLOW_OK)
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priv->state |= GST_JPEG_DECODER_STATE_GOT_SOS;
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return ret;
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}
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#ifndef GST_DISABLE_GST_DEBUG
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static const char *
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_get_marker_name (guint marker)
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{
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#define MARKERS(V) \
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V (SOF0) \
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V (SOF1) \
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V (SOF2) \
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V (SOF3) \
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V (SOF5) \
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V (SOF6) \
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V (SOF7) \
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V (SOF9) \
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V (SOF10) \
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V (SOF11) \
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V (SOF13) \
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V (SOF14) \
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V (SOF15) \
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V (DHT) \
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V (DAC) \
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V (RST0) \
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V (RST1) \
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V (RST2) \
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V (RST3) \
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V (RST4) \
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V (RST5) \
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V (RST6) \
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V (RST7) \
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V (SOI) \
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V (EOI) \
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V (SOS) \
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V (DQT) \
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V (DNL) \
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V (DRI) \
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V (APP0) \
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V (APP1) \
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V (APP2) \
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V (APP3) \
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V (APP4) \
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V (APP5) \
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V (APP6) \
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V (APP7) \
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V (APP8) \
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V (APP9) \
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V (APP10) \
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V (APP11) \
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V (APP12) \
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V (APP13) \
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V (APP14) \
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V (APP15) \
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V (COM)
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#define CASE(marker) case G_PASTE(GST_JPEG_MARKER_, marker): return G_STRINGIFY (marker);
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switch (marker) {
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MARKERS (CASE)
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default:
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return "Unknown";
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}
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#undef CASE
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#undef MARKERS
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}
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#endif
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static GstFlowReturn
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gst_jpeg_decoder_handle_frame (GstVideoDecoder * decoder,
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GstVideoCodecFrame * frame)
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{
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GstJpegDecoder *self = GST_JPEG_DECODER (decoder);
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GstJpegDecoderPrivate *priv = self->priv;
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GstJpegDecoderClass *klass = GST_JPEG_DECODER_GET_CLASS (self);
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GstBuffer *in_buf = frame->input_buffer;
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GstFlowReturn ret = GST_FLOW_OK;
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GstMapInfo map;
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GstJpegMarker marker;
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GstJpegSegment seg;
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guint offset = 0;
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GST_LOG_OBJECT (self, "handle frame %" GST_PTR_FORMAT, in_buf);
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if (!gst_buffer_map (in_buf, &map, GST_MAP_READ)) {
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GST_ERROR_OBJECT (self, "Cannot map input buffer");
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ret = GST_FLOW_ERROR;
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goto error;
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}
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priv->state = 0;
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/* E.2.1 Control procedure for decoding compressed image data */
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while (offset < map.size) {
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if (!gst_jpeg_parse (&seg, map.data, map.size, offset))
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goto unmap_and_error;
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offset = seg.offset + seg.size;
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marker = seg.marker;
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if (!valid_state (priv->state, GST_JPEG_DECODER_STATE_GOT_SOI)
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&& marker != GST_JPEG_MARKER_SOI)
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goto unmap_and_error;
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GST_LOG_OBJECT (self, "marker %s: %" G_GSIZE_FORMAT,
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_get_marker_name (marker), seg.size);
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switch (marker) {
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/* Start of Image */
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case GST_JPEG_MARKER_SOI:
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priv->state |= GST_JPEG_DECODER_STATE_GOT_SOI;
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priv->restart_interval = 0;
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break;
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/* End of Image */
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case GST_JPEG_MARKER_EOI:
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if (!valid_state (priv->state, GST_JPEG_DECODER_STATE_VALID_PICTURE))
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goto unmap_and_error;
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g_assert (klass->end_picture);
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ret = klass->end_picture (self);
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if (ret != GST_FLOW_OK)
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goto unmap_and_error;
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priv->state = 0;
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|
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gst_buffer_unmap (in_buf, &map);
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GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (frame);
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g_assert (klass->output_picture);
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return klass->output_picture (self, frame);
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|
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/* Start of Scan */
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case GST_JPEG_MARKER_SOS:{
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/* get whole scan + ECSs, with RSTi */
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GstJpegSegment seg_scan;
|
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for (;;) {
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if (!gst_jpeg_parse (&seg_scan, map.data, map.size, offset))
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goto unmap_and_error;
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|
||||
if (seg_scan.marker < GST_JPEG_MARKER_RST_MIN
|
||||
|| seg_scan.marker > GST_JPEG_MARKER_RST_MAX)
|
||||
break;
|
||||
|
||||
offset = seg_scan.offset + seg_scan.size;
|
||||
}
|
||||
|
||||
offset = seg_scan.offset - 2;
|
||||
seg.size = offset - seg.offset;
|
||||
|
||||
if (decode_scan (self, &seg) != GST_FLOW_OK)
|
||||
goto unmap_and_error;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
/* Interpret markers */
|
||||
case GST_JPEG_MARKER_DAC:
|
||||
/* FIXME: Annex D - Arithmetic coding */
|
||||
GST_FIXME_OBJECT (self, "Arithmetic coding mode unsupported");
|
||||
goto unmap_and_error;
|
||||
case GST_JPEG_MARKER_DHT:
|
||||
if (!decode_huffman_table (self, &seg))
|
||||
goto unmap_and_error;
|
||||
break;
|
||||
case GST_JPEG_MARKER_DQT:
|
||||
if (!decode_quant_table (self, &seg))
|
||||
goto unmap_and_error;
|
||||
break;
|
||||
|
||||
case GST_JPEG_MARKER_DRI:
|
||||
if (!(valid_state (priv->state, GST_JPEG_DECODER_STATE_GOT_SOS)
|
||||
&& decode_restart_interval (self, &seg)))
|
||||
goto unmap_and_error;
|
||||
break;
|
||||
case GST_JPEG_MARKER_DNL:
|
||||
break;
|
||||
default:
|
||||
/* SOFn (Start Of Frame) */
|
||||
if (marker >= GST_JPEG_MARKER_SOF_MIN &&
|
||||
marker <= GST_JPEG_MARKER_SOF_MAX) {
|
||||
if (decode_frame (self, &seg, frame) != GST_FLOW_OK)
|
||||
goto unmap_and_error;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
ret = GST_FLOW_ERROR;
|
||||
|
||||
unmap_and_error:
|
||||
{
|
||||
gst_buffer_unmap (in_buf, &map);
|
||||
goto error;
|
||||
}
|
||||
|
||||
error:
|
||||
{
|
||||
if (ret == GST_FLOW_ERROR) {
|
||||
GST_VIDEO_DECODER_ERROR (self, 1, STREAM, DECODE,
|
||||
("Failed to decode data"), (NULL), ret);
|
||||
}
|
||||
|
||||
gst_video_decoder_drop_frame (decoder, frame);
|
||||
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
145
subprojects/gst-plugins-bad/sys/va/gstjpegdecoder.h
Normal file
145
subprojects/gst-plugins-bad/sys/va/gstjpegdecoder.h
Normal file
|
|
@ -0,0 +1,145 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) 2022 Víctor Jáquez <vjaquez@igalia.com>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
||||
* Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#ifndef __GST_JPEG_DECODER_H__
|
||||
#define __GST_JPEG_DECODER_H__
|
||||
|
||||
#include <gst/codecs/codecs-prelude.h>
|
||||
|
||||
#include <gst/video/video.h>
|
||||
#include <gst/codecparsers/gstjpegparser.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_JPEG_DECODER (gst_jpeg_decoder_get_type())
|
||||
#define GST_JPEG_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_DECODER,GstJpegDecoder))
|
||||
#define GST_JPEG_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_DECODER,GstJpegDecoderClass))
|
||||
#define GST_JPEG_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_JPEG_DECODER,GstJpegDecoderClass))
|
||||
#define GST_IS_JPEG_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_DECODER))
|
||||
#define GST_IS_JPEG_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_DECODER))
|
||||
#define GST_JPEG_DECODER_CAST(obj) ((GstJpegDecoder*)obj)
|
||||
|
||||
typedef struct _GstJpegDecoderScan GstJpegDecoderScan;
|
||||
|
||||
typedef struct _GstJpegDecoder GstJpegDecoder;
|
||||
typedef struct _GstJpegDecoderClass GstJpegDecoderClass;
|
||||
typedef struct _GstJpegDecoderPrivate GstJpegDecoderPrivate;
|
||||
|
||||
|
||||
/**
|
||||
* GstJpegDecoderScan:
|
||||
*
|
||||
* Container for a SOS segment.
|
||||
*/
|
||||
struct _GstJpegDecoderScan
|
||||
{
|
||||
GstJpegScanHdr *scan_hdr;
|
||||
GstJpegHuffmanTables *huffman_tables;
|
||||
GstJpegQuantTables *quantization_tables;
|
||||
guint restart_interval;
|
||||
guint mcus_per_row;
|
||||
guint mcu_rows_in_scan;
|
||||
};
|
||||
|
||||
/**
|
||||
* GstJpegDecoder:
|
||||
*
|
||||
* The opaque #GstJpegDecoder data structure.
|
||||
*/
|
||||
struct _GstJpegDecoder
|
||||
{
|
||||
/*< private >*/
|
||||
GstVideoDecoder parent;
|
||||
|
||||
/*< protected >*/
|
||||
GstVideoCodecState * input_state;
|
||||
|
||||
/*< private >*/
|
||||
GstJpegDecoderPrivate *priv;
|
||||
gpointer padding[GST_PADDING_LARGE];
|
||||
};
|
||||
|
||||
/**
|
||||
* GstJpegDecoderClass:
|
||||
*
|
||||
* The opaque #GstJpegDecoderClass data structure.
|
||||
*/
|
||||
struct _GstJpegDecoderClass
|
||||
{
|
||||
/*< private >*/
|
||||
GstVideoDecoderClass parent_class;
|
||||
|
||||
/**
|
||||
* GstJpegDecoderClass::new_picture:
|
||||
* @decoder: a #GstJpegDecoder
|
||||
* @frame: (transfer none): a #GstVideoCodecFrame
|
||||
* @frame_hdr: (transfer none): a #GstJpegFrameHdr
|
||||
*
|
||||
* Called whenever new picture is detected.
|
||||
*/
|
||||
GstFlowReturn (*new_picture) (GstJpegDecoder * decoder,
|
||||
GstVideoCodecFrame * frame,
|
||||
GstJpegMarker marker,
|
||||
GstJpegFrameHdr * frame_hdr);
|
||||
|
||||
/**
|
||||
* GstJpegDecoderClass::decode_scan:
|
||||
* @decoder: a #GstJpegDecoder
|
||||
* @scan: (transfer none): a #GstJpegDecoderScan
|
||||
* @buffer: (transfer none): scan buffer
|
||||
* @size: size of @buffer
|
||||
*
|
||||
* Called whenever new scan is found.
|
||||
*/
|
||||
GstFlowReturn (*decode_scan) (GstJpegDecoder * decoder,
|
||||
GstJpegDecoderScan * scan,
|
||||
const guint8 * buffer,
|
||||
guint32 size);
|
||||
|
||||
/**
|
||||
* GstJpegDecoderClass::end_picture:
|
||||
* @decoder: a #GstJpegDecoder
|
||||
*
|
||||
* Called whenever a picture end mark is found.
|
||||
*/
|
||||
GstFlowReturn (*end_picture) (GstJpegDecoder * decoder);
|
||||
|
||||
/**
|
||||
* GstJpegDecoderClass::output_picture:
|
||||
* @decoder: a #GstJpegDecoder
|
||||
* @frame: (transfer full): a #GstVideoCodecFrame
|
||||
*
|
||||
* Called whenever a @frame is required to be outputted. The
|
||||
* #GstVideoCodecFrame must be consumed by subclass.
|
||||
*/
|
||||
GstFlowReturn (*output_picture) (GstJpegDecoder * decoder,
|
||||
GstVideoCodecFrame * frame);
|
||||
|
||||
/*< Private >*/
|
||||
gpointer padding[GST_PADDING_LARGE];
|
||||
};
|
||||
|
||||
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstJpegDecoder, gst_object_unref)
|
||||
|
||||
GST_CODECS_API
|
||||
GType gst_jpeg_decoder_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_JPEG_DECODER_H__ */
|
||||
|
|
@ -1,5 +1,6 @@
|
|||
va_sources = [
|
||||
'plugin.c',
|
||||
'gstjpegdecoder.c',
|
||||
'gstvabasedec.c',
|
||||
'gstvabasetransform.c',
|
||||
'gstvabaseenc.c',
|
||||
|
|
|
|||
Loading…
Reference in a new issue