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483 lines
14 KiB
C
483 lines
14 KiB
C
/* GStreamer
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* Copyright (C) <2017> Sean DuBois <sean@siobud.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:element-av1dec
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*
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* AV1 Decoder.
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*
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* ## Example launch line
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*
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* |[
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* gst-launch-1.0 -v filesrc location=videotestsrc.webm ! matroskademux ! av1dec ! videoconvert ! videoscale ! autovideosink
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* ]|
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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 <string.h>
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#include "gstav1dec.h"
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enum
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{
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PROP_0,
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};
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static GstStaticPadTemplate gst_av1_dec_sink_pad_template =
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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-av1")
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);
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static GstStaticPadTemplate gst_av1_dec_src_pad_template =
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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 (GST_VIDEO_CAPS_MAKE ("{ I420, YV12, Y42B, Y444"
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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", I420_10LE, I420_12LE, I422_10LE, I422_12LE, Y444_10LE, Y444_12LE"
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#else
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", I420_10BE, I420_12BE, I422_10BE, I422_12BE, Y444_10BE, Y444_12BE"
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#endif
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" }"))
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);
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GST_DEBUG_CATEGORY_STATIC (av1_dec_debug);
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#define GST_CAT_DEFAULT av1_dec_debug
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#define GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,endian) GST_VIDEO_FORMAT_##fmt##endian
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,LE)
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#else
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#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,BE)
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#endif
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static void gst_av1_dec_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_av1_dec_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_av1_dec_start (GstVideoDecoder * dec);
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static gboolean gst_av1_dec_stop (GstVideoDecoder * dec);
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static gboolean gst_av1_dec_set_format (GstVideoDecoder * dec,
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GstVideoCodecState * state);
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static gboolean gst_av1_dec_flush (GstVideoDecoder * dec);
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static GstFlowReturn
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gst_av1_dec_handle_frame (GstVideoDecoder * decoder,
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GstVideoCodecFrame * frame);
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static void gst_av1_dec_image_to_buffer (GstAV1Dec * dec,
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const aom_image_t * img, GstBuffer * buffer);
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static GstFlowReturn gst_av1_dec_open_codec (GstAV1Dec * av1dec,
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GstVideoCodecFrame * frame);
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static gboolean gst_av1_dec_get_valid_format (GstAV1Dec * dec,
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const aom_image_t * img, GstVideoFormat * fmt);
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#define gst_av1_dec_parent_class parent_class
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G_DEFINE_TYPE (GstAV1Dec, gst_av1_dec, GST_TYPE_VIDEO_DECODER);
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static void
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gst_av1_dec_class_init (GstAV1DecClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *element_class;
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GstVideoDecoderClass *vdec_class;
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gobject_class = (GObjectClass *) klass;
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element_class = (GstElementClass *) klass;
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vdec_class = (GstVideoDecoderClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_av1_dec_set_property;
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gobject_class->get_property = gst_av1_dec_get_property;
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gst_element_class_add_static_pad_template (element_class,
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&gst_av1_dec_src_pad_template);
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gst_element_class_add_static_pad_template (element_class,
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&gst_av1_dec_sink_pad_template);
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gst_element_class_set_static_metadata (element_class, "AV1 Decoder",
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"Codec/Decoder/Video", "Decode AV1 video streams",
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"Sean DuBois <sean@siobud.com>");
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vdec_class->start = GST_DEBUG_FUNCPTR (gst_av1_dec_start);
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vdec_class->stop = GST_DEBUG_FUNCPTR (gst_av1_dec_stop);
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vdec_class->flush = GST_DEBUG_FUNCPTR (gst_av1_dec_flush);
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vdec_class->set_format = GST_DEBUG_FUNCPTR (gst_av1_dec_set_format);
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vdec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_av1_dec_handle_frame);
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klass->codec_algo = &aom_codec_av1_dx_algo;
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GST_DEBUG_CATEGORY_INIT (av1_dec_debug, "av1dec", 0, "AV1 decoding element");
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}
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static void
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gst_av1_dec_init (GstAV1Dec * av1dec)
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{
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GstVideoDecoder *dec = (GstVideoDecoder *) av1dec;
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GST_DEBUG_OBJECT (dec, "gst_av1_dec_init");
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gst_video_decoder_set_packetized (dec, TRUE);
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gst_video_decoder_set_needs_format (dec, TRUE);
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gst_video_decoder_set_use_default_pad_acceptcaps (dec, TRUE);
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GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (dec));
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}
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static void
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gst_av1_dec_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_av1_dec_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_av1_dec_start (GstVideoDecoder * dec)
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{
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GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
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av1dec->decoder_inited = FALSE;
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av1dec->output_state = NULL;
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av1dec->input_state = NULL;
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return TRUE;
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}
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static gboolean
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gst_av1_dec_stop (GstVideoDecoder * dec)
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{
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GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
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if (av1dec->output_state) {
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gst_video_codec_state_unref (av1dec->output_state);
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av1dec->output_state = NULL;
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}
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if (av1dec->input_state) {
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gst_video_codec_state_unref (av1dec->input_state);
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av1dec->input_state = NULL;
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}
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if (av1dec->decoder_inited) {
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aom_codec_destroy (&av1dec->decoder);
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}
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av1dec->decoder_inited = FALSE;
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return TRUE;
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}
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static gboolean
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gst_av1_dec_set_format (GstVideoDecoder * dec, GstVideoCodecState * state)
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{
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GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
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if (av1dec->decoder_inited) {
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aom_codec_destroy (&av1dec->decoder);
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}
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av1dec->decoder_inited = FALSE;
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if (av1dec->output_state) {
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gst_video_codec_state_unref (av1dec->output_state);
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av1dec->output_state = NULL;
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}
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if (av1dec->input_state) {
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gst_video_codec_state_unref (av1dec->input_state);
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}
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av1dec->input_state = gst_video_codec_state_ref (state);
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return TRUE;
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}
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static gboolean
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gst_av1_dec_flush (GstVideoDecoder * dec)
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{
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GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
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if (av1dec->output_state) {
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gst_video_codec_state_unref (av1dec->output_state);
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av1dec->output_state = NULL;
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}
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if (av1dec->decoder_inited) {
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aom_codec_destroy (&av1dec->decoder);
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}
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av1dec->decoder_inited = FALSE;
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return TRUE;
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}
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static GstFlowReturn
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gst_av1_dec_open_codec (GstAV1Dec * av1dec, GstVideoCodecFrame * frame)
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{
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aom_codec_err_t status;
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GstAV1DecClass *av1class = GST_AV1_DEC_GET_CLASS (av1dec);
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status = aom_codec_dec_init (&av1dec->decoder, av1class->codec_algo, NULL, 0);
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if (status != AOM_CODEC_OK) {
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GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
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("Failed to initialize AOM decoder"), ("%s", ""));
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return GST_FLOW_ERROR;
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}
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av1dec->decoder_inited = TRUE;
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return GST_FLOW_OK;
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}
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static void
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gst_av1_dec_handle_resolution_change (GstAV1Dec * av1dec, aom_image_t * img,
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GstVideoFormat fmt)
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{
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if (!av1dec->output_state ||
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av1dec->output_state->info.finfo->format != fmt ||
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av1dec->output_state->info.width != img->d_w ||
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av1dec->output_state->info.height != img->d_h) {
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if (av1dec->output_state)
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gst_video_codec_state_unref (av1dec->output_state);
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av1dec->output_state =
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gst_video_decoder_set_output_state (GST_VIDEO_DECODER (av1dec),
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fmt, img->d_w, img->d_h, av1dec->input_state);
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gst_video_decoder_negotiate (GST_VIDEO_DECODER (av1dec));
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}
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}
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static void
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gst_av1_dec_image_to_buffer (GstAV1Dec * dec, const aom_image_t * img,
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GstBuffer * buffer)
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{
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int deststride, srcstride, height, width, line, comp, y;
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guint8 *dest, *src;
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GstVideoFrame frame;
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GstVideoInfo *info = &dec->output_state->info;
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if (!gst_video_frame_map (&frame, info, buffer, GST_MAP_WRITE)) {
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GST_ERROR_OBJECT (dec, "Could not map video buffer");
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return;
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}
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for (comp = 0; comp < 3; comp++) {
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dest = GST_VIDEO_FRAME_COMP_DATA (&frame, comp);
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src = img->planes[comp];
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width =
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GST_VIDEO_FRAME_COMP_WIDTH (&frame,
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comp) * GST_VIDEO_FRAME_COMP_PSTRIDE (&frame, comp);
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height = GST_VIDEO_FRAME_COMP_HEIGHT (&frame, comp);
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deststride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, comp);
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srcstride = img->stride[comp];
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if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8) {
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GST_TRACE_OBJECT (dec,
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"HIGHBITDEPTH image with 8 bit_depth. Comp %d: %d != %d, copying "
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"line by line.", comp, srcstride, deststride);
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for (line = 0; line < height; line++) {
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for (y = 0; y < width; y++) {
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dest[y] = src[y * 2];
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}
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dest += deststride;
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src += srcstride;
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}
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} else if (srcstride == deststride) {
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GST_TRACE_OBJECT (dec, "Stride matches. Comp %d: %d, copying full plane",
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comp, srcstride);
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memcpy (dest, src, srcstride * height);
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} else {
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GST_TRACE_OBJECT (dec, "Stride mismatch. Comp %d: %d != %d, copying "
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"line by line.", comp, srcstride, deststride);
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for (line = 0; line < height; line++) {
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memcpy (dest, src, width);
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dest += deststride;
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src += srcstride;
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}
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}
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}
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gst_video_frame_unmap (&frame);
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}
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gboolean
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gst_av1_dec_get_valid_format (GstAV1Dec * dec, const aom_image_t * img,
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GstVideoFormat * fmt)
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{
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switch (img->fmt) {
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case AOM_IMG_FMT_I420:
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case AOM_IMG_FMT_I42016:
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if (img->bit_depth == 8) {
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*fmt = img->monochrome ? GST_VIDEO_FORMAT_GRAY8 : GST_VIDEO_FORMAT_I420;
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return TRUE;
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} else if (img->bit_depth == 10) {
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*fmt = AOM_FMT_TO_GST (I420_10);
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return TRUE;
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} else if (img->bit_depth == 12) {
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*fmt = AOM_FMT_TO_GST (I420_12);
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return TRUE;
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}
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GST_FIXME_OBJECT (dec,
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"Please add a 4:2:0 planar %u bit depth frame format",
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img->bit_depth);
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
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("Unsupported frame format - 4:2:0 planar %u bit depth",
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img->bit_depth));
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return FALSE;
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case AOM_IMG_FMT_I422:
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case AOM_IMG_FMT_I42216:
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if (img->bit_depth == 8) {
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*fmt = GST_VIDEO_FORMAT_Y42B;
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return TRUE;
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} else if (img->bit_depth == 10) {
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*fmt = AOM_FMT_TO_GST (I422_10);
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return TRUE;
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} else if (img->bit_depth == 12) {
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*fmt = AOM_FMT_TO_GST (I422_12);
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return TRUE;
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}
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GST_FIXME_OBJECT (dec,
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"Please add a 4:2:2 planar %u bit depth frame format",
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img->bit_depth);
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
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("Unsupported frame format - 4:2:2 planar %u bit depth",
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img->bit_depth));
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return FALSE;
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case AOM_IMG_FMT_I444:
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case AOM_IMG_FMT_I44416:
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if (img->bit_depth == 8) {
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*fmt = GST_VIDEO_FORMAT_Y444;
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return TRUE;
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} else if (img->bit_depth == 10) {
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*fmt = AOM_FMT_TO_GST (Y444_10);
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return TRUE;
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} else if (img->bit_depth == 12) {
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*fmt = AOM_FMT_TO_GST (Y444_12);
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return TRUE;
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}
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GST_FIXME_OBJECT (dec,
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"Please add a 4:4:4 planar %u bit depth frame format",
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img->bit_depth);
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
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("Unsupported frame format - 4:4:4 planar %u bit depth",
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img->bit_depth));
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return FALSE;
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case AOM_IMG_FMT_YV12:
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*fmt = GST_VIDEO_FORMAT_YV12;
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return TRUE;
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default:
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return FALSE;
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}
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}
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static GstFlowReturn
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gst_av1_dec_handle_frame (GstVideoDecoder * dec, GstVideoCodecFrame * frame)
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{
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GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
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GstFlowReturn ret;
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GstMapInfo minfo;
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aom_codec_err_t status;
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aom_image_t *img;
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aom_codec_iter_t iter = NULL;
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GstVideoFormat fmt;
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if (!av1dec->decoder_inited) {
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ret = gst_av1_dec_open_codec (av1dec, frame);
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if (ret == GST_FLOW_CUSTOM_SUCCESS_1) {
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gst_video_decoder_drop_frame (dec, frame);
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return GST_FLOW_OK;
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} else if (ret != GST_FLOW_OK) {
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gst_video_codec_frame_unref (frame);
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return ret;
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}
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}
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if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
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GST_ERROR_OBJECT (dec, "Failed to map input buffer");
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gst_video_codec_frame_unref (frame);
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return GST_FLOW_ERROR;
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}
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status = aom_codec_decode (&av1dec->decoder, minfo.data, minfo.size, NULL);
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gst_buffer_unmap (frame->input_buffer, &minfo);
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if (status) {
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GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
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("Failed to decode frame"), ("%s", ""));
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gst_video_codec_frame_unref (frame);
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return ret;
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}
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img = aom_codec_get_frame (&av1dec->decoder, &iter);
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if (img) {
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if (gst_av1_dec_get_valid_format (av1dec, img, &fmt) == FALSE) {
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aom_img_free (img);
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GST_ELEMENT_ERROR (dec, LIBRARY, ENCODE,
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("Failed to decode frame"), ("Unsupported color format %d",
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img->fmt));
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gst_video_codec_frame_unref (frame);
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return GST_FLOW_ERROR;
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}
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gst_av1_dec_handle_resolution_change (av1dec, img, fmt);
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ret = gst_video_decoder_allocate_output_frame (dec, frame);
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|
if (ret == GST_FLOW_OK) {
|
|
gst_av1_dec_image_to_buffer (av1dec, img, frame->output_buffer);
|
|
ret = gst_video_decoder_finish_frame (dec, frame);
|
|
} else {
|
|
gst_video_decoder_drop_frame (dec, frame);
|
|
}
|
|
|
|
aom_img_free (img);
|
|
while ((img = aom_codec_get_frame (&av1dec->decoder, &iter))) {
|
|
GST_WARNING_OBJECT (dec, "Multiple decoded frames... dropping");
|
|
aom_img_free (img);
|
|
}
|
|
} else {
|
|
GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY (frame);
|
|
gst_video_decoder_finish_frame (dec, frame);
|
|
}
|
|
|
|
|
|
return ret;
|
|
}
|