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219 lines
7 KiB
C
219 lines
7 KiB
C
/* VP9
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* Copyright (C) 2006 David Schleef <ds@schleef.org>
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* Copyright (C) 2008,2009,2010 Entropy Wave Inc
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* Copyright (C) 2010-2013 Sebastian Dröge <slomo@circular-chaos.org>
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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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/**
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* SECTION:element-vp9dec
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* @see_also: vp9enc, matroskademux
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*
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* This element decodes VP9 streams into raw video.
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* <ulink url="http://www.webmproject.org">VP9</ulink> is a royalty-free
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* video codec maintained by <ulink url="http://www.google.com/">Google
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* </ulink>. It's the successor of On2 VP3, which was the base of the
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* Theora video codec.
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*
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* <refsect2>
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* <title>Example pipeline</title>
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* |[
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* gst-launch-1.0 -v filesrc location=videotestsrc.webm ! matroskademux ! vp9dec ! videoconvert ! videoscale ! autovideosink
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* ]| This example pipeline will decode a WebM stream and decodes the VP9 video.
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* </refsect2>
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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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#ifdef HAVE_VP9_DECODER
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#include <string.h>
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#include "gstvp8utils.h"
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#include "gstvp9dec.h"
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#include <gst/video/gstvideometa.h>
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#include <gst/video/gstvideopool.h>
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GST_DEBUG_CATEGORY_STATIC (gst_vp9dec_debug);
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#define GST_CAT_DEFAULT gst_vp9dec_debug
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#define VP9_DECODER_VIDEO_TAG "VP9 video"
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static void gst_vp9_dec_set_stream_info (GstVPXDec * dec,
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vpx_codec_stream_info_t * stream_info);
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static gboolean gst_vp9_dec_get_valid_format (GstVPXDec * dec,
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vpx_image_t * img, GstVideoFormat * fmt);
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static void gst_vp9_dec_handle_resolution_change (GstVPXDec * dec,
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vpx_image_t * img, GstVideoFormat fmt);
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static GstStaticPadTemplate gst_vp9_dec_sink_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-vp9")
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);
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static GstStaticPadTemplate gst_vp9_dec_src_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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);
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#define parent_class gst_vp9_dec_parent_class
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G_DEFINE_TYPE (GstVP9Dec, gst_vp9_dec, GST_TYPE_VPX_DEC);
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static void
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gst_vp9_dec_class_init (GstVP9DecClass * klass)
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{
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GstElementClass *element_class;
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GstVPXDecClass *vpx_class;
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element_class = GST_ELEMENT_CLASS (klass);
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vpx_class = GST_VPX_DEC_CLASS (klass);
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gst_element_class_add_static_pad_template (element_class,
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&gst_vp9_dec_src_template);
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gst_element_class_add_static_pad_template (element_class,
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&gst_vp9_dec_sink_template);
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gst_element_class_set_static_metadata (element_class,
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"On2 VP9 Decoder",
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"Codec/Decoder/Video",
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"Decode VP9 video streams", "David Schleef <ds@entropywave.com>, "
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"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
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vpx_class->video_codec_tag = VP9_DECODER_VIDEO_TAG;
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vpx_class->codec_algo = &vpx_codec_vp9_dx_algo;
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vpx_class->set_stream_info = GST_DEBUG_FUNCPTR (gst_vp9_dec_set_stream_info);
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vpx_class->get_frame_format =
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GST_DEBUG_FUNCPTR (gst_vp9_dec_get_valid_format);
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vpx_class->handle_resolution_change =
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GST_DEBUG_FUNCPTR (gst_vp9_dec_handle_resolution_change);
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GST_DEBUG_CATEGORY_INIT (gst_vp9dec_debug, "vp9dec", 0, "VP9 Decoder");
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}
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static void
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gst_vp9_dec_init (GstVP9Dec * gst_vp9_dec)
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{
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GST_DEBUG_OBJECT (gst_vp9_dec, "gst_vp9_dec_init");
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}
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static void
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gst_vp9_dec_set_stream_info (GstVPXDec * dec,
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vpx_codec_stream_info_t * stream_info)
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{
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/* FIXME: peek_stream_info() does not return valid values, take input caps */
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stream_info->w = dec->input_state->info.width;
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stream_info->h = dec->input_state->info.height;
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return;
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}
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static gboolean
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gst_vp9_dec_get_valid_format (GstVPXDec * dec, vpx_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 VPX_IMG_FMT_I420:
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*fmt = GST_VIDEO_FORMAT_I420;
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return TRUE;
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case VPX_IMG_FMT_YV12:
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*fmt = GST_VIDEO_FORMAT_YV12;
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return TRUE;
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case VPX_IMG_FMT_I422:
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*fmt = GST_VIDEO_FORMAT_Y42B;
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return TRUE;
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case VPX_IMG_FMT_I444:
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*fmt = GST_VIDEO_FORMAT_Y444;
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return TRUE;
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#ifdef VPX_IMG_FMT_I440
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case VPX_IMG_FMT_I440:
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/* Planar, half height, full width U/V */
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GST_FIXME_OBJECT (dec, "Please add a 4:4:0 planar frame format");
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED,
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(NULL), ("Unsupported frame format - 4:4:0 planar"));
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return FALSE;
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#endif
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#ifdef VPX_IMG_FMT_I42016
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case VPX_IMG_FMT_I42016:
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/* VPX_IMG_FMT_I420 | VPX_IMG_FMT_HIGHBITDEPTH */
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GST_FIXME_OBJECT (dec, "Please add 16-bit I420 format");
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED,
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(NULL), ("Unsupported frame format - 16-bit 4:2:0 planar"));
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return FALSE;
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#endif
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#ifdef VPX_IMG_FMT_I42216
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case VPX_IMG_FMT_I42216:
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/* VPX_IMG_FMT_I422 | VPX_IMG_FMT_HIGHBITDEPTH */
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GST_FIXME_OBJECT (dec, "Please add 16-bit Y42B format");
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED,
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(NULL), ("Unsupported frame format - 16-bit 4:2:2 planar"));
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return FALSE;
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#endif
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#ifdef VPX_IMG_FMT_I44416
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case VPX_IMG_FMT_I44416:
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/* VPX_IMG_FMT_I444 | VPX_IMG_FMT_HIGHBITDEPTH */
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GST_FIXME_OBJECT (dec, "Please add 16-bit Y444 format");
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED,
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(NULL), ("Unsupported frame format - 16-bit 4:4:4 planar"));
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return FALSE;
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#endif
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#ifdef VPX_IMG_FMT_I44016
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case VPX_IMG_FMT_I44016:
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/* VPX_IMG_FMT_I440 | VPX_IMG_FMT_HIGHBITDEPTH */
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GST_FIXME_OBJECT (dec, "Please add 16-bit 4:4:0 planar frame format");
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GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED,
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(NULL), ("Unsupported frame format - 16-bit 4:4:0 planar"));
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return FALSE;
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#endif
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default:
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return FALSE;
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}
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}
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static void
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gst_vp9_dec_handle_resolution_change (GstVPXDec * dec, vpx_image_t * img,
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GstVideoFormat fmt)
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{
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GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
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if (!dec->output_state || dec->output_state->info.finfo->format != fmt ||
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dec->output_state->info.width != img->d_w ||
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dec->output_state->info.height != img->d_h) {
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gboolean send_tags = !dec->output_state;
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if (dec->output_state)
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gst_video_codec_state_unref (dec->output_state);
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dec->output_state =
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gst_video_decoder_set_output_state (GST_VIDEO_DECODER (dec),
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fmt, img->d_w, img->d_h, dec->input_state);
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gst_video_decoder_negotiate (GST_VIDEO_DECODER (dec));
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if (send_tags)
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vpxclass->send_tags (dec);
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}
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}
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#endif /* HAVE_VP9_DECODER */
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