gstreamer/ext/vp8/gstvp8dec.c

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/* VP8 plugin
* Copyright (C) 2006 David Schleef <ds@schleef.org>
* Copyright (C) 2008,2009,2010 Entropy Wave Inc
* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/gstbasevideodecoder.h>
#include <gst/video/gstbasevideoutils.h>
#include <gst/base/gstbasetransform.h>
#include <gst/base/gstadapter.h>
#include <gst/video/video.h>
#include <string.h>
#include <math.h>
#include <vpx/vpx_decoder.h>
#include <vpx/vp8dx.h>
GST_DEBUG_CATEGORY (gst_vp8dec_debug);
#define GST_CAT_DEFAULT gst_vp8dec_debug
#define GST_TYPE_VP8_DEC \
(gst_vp8_dec_get_type())
#define GST_VP8_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VP8_DEC,GstVP8Dec))
#define GST_VP8_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VP8_DEC,GstVP8DecClass))
#define GST_IS_GST_VP8_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VP8_DEC))
#define GST_IS_GST_VP8_DEC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VP8_DEC))
typedef struct _GstVP8Dec GstVP8Dec;
typedef struct _GstVP8DecClass GstVP8DecClass;
struct _GstVP8Dec
{
GstBaseVideoDecoder base_video_decoder;
vpx_codec_ctx_t decoder;
/* state */
gboolean decoder_inited;
};
struct _GstVP8DecClass
{
GstBaseVideoDecoderClass base_video_decoder_class;
};
/* GstVP8Dec signals and args */
enum
{
LAST_SIGNAL
};
enum
{
ARG_0
};
static void gst_vp8_dec_finalize (GObject * object);
static void gst_vp8_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_vp8_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_vp8_dec_start (GstBaseVideoDecoder * decoder);
static gboolean gst_vp8_dec_stop (GstBaseVideoDecoder * decoder);
static gboolean gst_vp8_dec_reset (GstBaseVideoDecoder * decoder);
static GstFlowReturn gst_vp8_dec_parse_data (GstBaseVideoDecoder * decoder,
gboolean at_eos);
static GstFlowReturn gst_vp8_dec_handle_frame (GstBaseVideoDecoder * decoder,
GstVideoFrame * frame);
GType gst_vp8_dec_get_type (void);
static GstStaticPadTemplate gst_vp8_dec_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-vp8")
);
static GstStaticPadTemplate gst_vp8_dec_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
GST_BOILERPLATE (GstVP8Dec, gst_vp8_dec, GstBaseVideoDecoder,
GST_TYPE_BASE_VIDEO_DECODER);
static void
gst_vp8_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vp8_dec_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vp8_dec_sink_template));
gst_element_class_set_details_simple (element_class,
"On2 VP8 Decoder",
"Codec/Decoder/Video",
"Decode VP8 video streams", "David Schleef <ds@entropywave.com>");
}
static void
gst_vp8_dec_class_init (GstVP8DecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseVideoDecoderClass *base_video_decoder_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
base_video_decoder_class = GST_BASE_VIDEO_DECODER_CLASS (klass);
gobject_class->set_property = gst_vp8_dec_set_property;
gobject_class->get_property = gst_vp8_dec_get_property;
gobject_class->finalize = gst_vp8_dec_finalize;
base_video_decoder_class->start = gst_vp8_dec_start;
base_video_decoder_class->stop = gst_vp8_dec_stop;
base_video_decoder_class->reset = gst_vp8_dec_reset;
base_video_decoder_class->parse_data = gst_vp8_dec_parse_data;
base_video_decoder_class->handle_frame = gst_vp8_dec_handle_frame;
}
static void
gst_vp8_dec_init (GstVP8Dec * gst_vp8_dec, GstVP8DecClass * klass)
{
GST_DEBUG ("gst_vp8_dec_init");
}
static void
gst_vp8_dec_finalize (GObject * object)
{
GstVP8Dec *gst_vp8_dec;
GST_DEBUG ("finalize");
g_return_if_fail (GST_IS_GST_VP8_DEC (object));
gst_vp8_dec = GST_VP8_DEC (object);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_vp8_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVP8Dec *src;
g_return_if_fail (GST_IS_GST_VP8_DEC (object));
src = GST_VP8_DEC (object);
GST_DEBUG ("gst_vp8_dec_set_property");
switch (prop_id) {
default:
break;
}
}
static void
gst_vp8_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVP8Dec *src;
g_return_if_fail (GST_IS_GST_VP8_DEC (object));
src = GST_VP8_DEC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_vp8_dec_start (GstBaseVideoDecoder * decoder)
{
GstVP8Dec *gst_vp8_dec = GST_VP8_DEC (decoder);
decoder->packetized = TRUE;
gst_vp8_dec->decoder_inited = FALSE;
return TRUE;
}
static gboolean
gst_vp8_dec_stop (GstBaseVideoDecoder * base_video_decoder)
{
GstVP8Dec *gst_vp8_dec = GST_VP8_DEC (base_video_decoder);
if (gst_vp8_dec->decoder_inited)
vpx_codec_destroy (&gst_vp8_dec->decoder);
gst_vp8_dec->decoder_inited = FALSE;
return TRUE;
}
static gboolean
gst_vp8_dec_reset (GstBaseVideoDecoder * base_video_decoder)
{
GstVP8Dec *decoder;
GST_DEBUG ("reset");
decoder = GST_VP8_DEC (base_video_decoder);
if (decoder->decoder_inited)
vpx_codec_destroy (&decoder->decoder);
decoder->decoder_inited = FALSE;
return TRUE;
}
static GstFlowReturn
gst_vp8_dec_parse_data (GstBaseVideoDecoder * decoder, gboolean at_eos)
{
return GST_FLOW_OK;
}
static void
gst_vp8_dec_send_tags (GstVP8Dec * dec)
{
GstTagList *list;
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_VIDEO_CODEC, "VP8 video", NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (dec),
GST_BASE_VIDEO_CODEC_SRC_PAD (dec), list);
}
static GstFlowReturn
gst_vp8_dec_handle_frame (GstBaseVideoDecoder * decoder, GstVideoFrame * frame)
{
GstVP8Dec *dec;
GstFlowReturn ret;
long status;
vpx_codec_iter_t iter = NULL;
vpx_image_t *img;
vpx_codec_err_t res;
GST_DEBUG ("handle_frame");
dec = GST_VP8_DEC (decoder);
if (!dec->decoder_inited) {
int flags = 0;
vpx_codec_stream_info_t stream_info;
memset (&stream_info, 0, sizeof (stream_info));
stream_info.sz = sizeof (stream_info);
res = vpx_codec_peek_stream_info (&vpx_codec_vp8_dx_algo,
GST_BUFFER_DATA (frame->sink_buffer),
GST_BUFFER_SIZE (frame->sink_buffer), &stream_info);
if (res != VPX_CODEC_OK || !stream_info.is_kf) {
gst_base_video_decoder_skip_frame (decoder, frame);
return GST_FLOW_OK;
}
/* should set size here */
decoder->state.width = stream_info.w;
decoder->state.height = stream_info.h;
decoder->state.format = GST_VIDEO_FORMAT_I420;
gst_vp8_dec_send_tags (dec);
res =
vpx_codec_dec_init (&dec->decoder, &vpx_codec_vp8_dx_algo, NULL, flags);
if (res != VPX_CODEC_OK) {
GST_ELEMENT_ERROR (dec, LIBRARY, INIT,
("Failed to initialize VP8 decoder"), (NULL));
return GST_FLOW_ERROR;
}
dec->decoder_inited = TRUE;
}
if (!GST_BUFFER_FLAG_IS_SET (frame->sink_buffer, GST_BUFFER_FLAG_DELTA_UNIT))
gst_base_video_decoder_set_sync_point (decoder);
#if 0
if (GST_PAD_CAPS (GST_BASE_VIDEO_CODEC_SRC_PAD (decoder)) == NULL) {
GstCaps *caps;
caps = gst_video_format_new_caps (decoder->state.format,
decoder->state.width, decoder->state.height,
decoder->state.fps_n, decoder->state.fps_d,
decoder->state.par_n, decoder->state.par_d);
GST_DEBUG ("setting caps %" GST_PTR_FORMAT, caps);
gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (decoder), caps);
}
#endif
ret = gst_base_video_decoder_alloc_src_frame (decoder, frame);
if (ret != GST_FLOW_OK) {
GST_WARNING ("failed to get buffer");
goto out;
}
status = vpx_codec_decode (&dec->decoder,
GST_BUFFER_DATA (frame->sink_buffer),
GST_BUFFER_SIZE (frame->sink_buffer), NULL, 0);
if (status) {
return GST_FLOW_ERROR;
}
img = vpx_codec_get_frame (&dec->decoder, &iter);
if (img) {
int i;
ret = gst_base_video_decoder_alloc_src_frame (decoder, frame);
if (ret == GST_FLOW_OK) {
for (i = 0; i < decoder->state.height; i++) {
memcpy (GST_BUFFER_DATA (frame->src_buffer) + i * decoder->state.width,
img->planes[0] + i * img->stride[0], decoder->state.width);
}
for (i = 0; i < decoder->state.height / 2; i++) {
memcpy (GST_BUFFER_DATA (frame->src_buffer) +
decoder->state.width * decoder->state.height +
i * decoder->state.width / 2,
img->planes[1] + i * img->stride[1], decoder->state.width / 2);
}
for (i = 0; i < decoder->state.height / 2; i++) {
memcpy (GST_BUFFER_DATA (frame->src_buffer) +
decoder->state.width * decoder->state.height +
decoder->state.width * decoder->state.height / 4 +
i * decoder->state.width / 2,
img->planes[2] + i * img->stride[2], decoder->state.width / 2);
}
}
gst_base_video_decoder_finish_frame (decoder, frame);
do {
vpx_img_free (img);
} while ((img = vpx_codec_get_frame (&dec->decoder, &iter)));
} else {
/* Invisible frame */
gst_base_video_decoder_skip_frame (decoder, frame);
}
out:
return ret;
}