gstreamer/ext/vpx/gstvp9enc.c
Prashant Gotarne 5c7eb0f886 vpx: created common baseclass GstVPXEnc
GstVP8Enc and GstVP9Enc has almost 80% code in common.
created common baseclass GstVPXEnc for GstVP8Enc and GstVP9Enc

https://bugzilla.gnome.org/show_bug.cgi?id=755510
2015-12-15 14:03:29 -05:00

244 lines
7.7 KiB
C

/* VP9
* Copyright (C) 2006 David Schleef <ds@schleef.org>
* Copyright (C) 2010 Entropy Wave Inc
* Copyright (C) 2010-2013 Sebastian Dröge <slomo@circular-chaos.org>
*
* 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.
*
*/
/**
* SECTION:element-vp9enc
* @see_also: vp9dec, webmmux, oggmux
*
* This element encodes raw video into a VP9 stream.
* <ulink url="http://www.webmproject.org">VP9</ulink> is a royalty-free
* video codec maintained by <ulink url="http://www.google.com/">Google
* </ulink>. It's the successor of On2 VP3, which was the base of the
* Theora video codec.
*
* To control the quality of the encoding, the #GstVP9Enc::target-bitrate,
* #GstVP9Enc::min-quantizer, #GstVP9Enc::max-quantizer or #GstVP9Enc::cq-level
* properties can be used. Which one is used depends on the mode selected by
* the #GstVP9Enc::end-usage property.
* See <ulink url="http://www.webmproject.org/docs/encoder-parameters/">Encoder Parameters</ulink>
* for explanation, examples for useful encoding parameters and more details
* on the encoding parameters.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch-1.0 -v videotestsrc num-buffers=1000 ! vp9enc ! webmmux ! filesink location=videotestsrc.webm
* ]| This example pipeline will encode a test video source to VP9 muxed in an
* WebM container.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_VP9_ENCODER
/* glib decided in 2.32 it would be a great idea to deprecated GValueArray without
* providing an alternative
*
* See https://bugzilla.gnome.org/show_bug.cgi?id=667228
* */
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#include <gst/tag/tag.h>
#include <gst/video/video.h>
#include <string.h>
#include "gstvp8utils.h"
#include "gstvp9enc.h"
GST_DEBUG_CATEGORY_STATIC (gst_vp9enc_debug);
#define GST_CAT_DEFAULT gst_vp9enc_debug
/* FIXME: Y42B and Y444 do not work yet it seems */
static GstStaticPadTemplate gst_vp9_enc_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
/*GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12, Y42B, Y444 }")) */
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12 }"))
);
static GstStaticPadTemplate gst_vp9_enc_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-vp9, " "profile = (string) {0, 1, 2, 3}")
);
#define parent_class gst_vp9_enc_parent_class
G_DEFINE_TYPE (GstVP9Enc, gst_vp9_enc, GST_TYPE_VPX_ENC);
static vpx_codec_iface_t *gst_vp9_enc_get_algo (GstVPXEnc * enc);
static gboolean gst_vp9_enc_enable_scaling (GstVPXEnc * enc);
static void gst_vp9_enc_set_image_format (GstVPXEnc * enc, vpx_image_t * image);
static GstCaps *gst_vp9_enc_get_new_simple_caps (GstVPXEnc * enc);
static void gst_vp9_enc_set_stream_info (GstVPXEnc * enc, GstCaps * caps,
GstVideoInfo * info);
static void *gst_vp9_enc_process_frame_user_data (GstVPXEnc * enc,
GstVideoCodecFrame * frame);
static GstFlowReturn gst_vp9_enc_handle_invisible_frame_buffer (GstVPXEnc * enc,
void *user_data, GstBuffer * buffer);
static void gst_vp9_enc_set_frame_user_data (GstVPXEnc * enc,
GstVideoCodecFrame * frame, vpx_image_t * image);
static void
gst_vp9_enc_class_init (GstVP9EncClass * klass)
{
GstElementClass *element_class;
GstVPXEncClass *vpx_encoder_class;
element_class = GST_ELEMENT_CLASS (klass);
vpx_encoder_class = GST_VPX_ENC_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vp9_enc_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vp9_enc_sink_template));
gst_element_class_set_static_metadata (element_class,
"On2 VP9 Encoder",
"Codec/Encoder/Video",
"Encode VP9 video streams", "David Schleef <ds@entropywave.com>, "
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
vpx_encoder_class->get_algo = gst_vp9_enc_get_algo;
vpx_encoder_class->enable_scaling = gst_vp9_enc_enable_scaling;
vpx_encoder_class->set_image_format = gst_vp9_enc_set_image_format;
vpx_encoder_class->get_new_vpx_caps = gst_vp9_enc_get_new_simple_caps;
vpx_encoder_class->set_stream_info = gst_vp9_enc_set_stream_info;
vpx_encoder_class->process_frame_user_data =
gst_vp9_enc_process_frame_user_data;
vpx_encoder_class->handle_invisible_frame_buffer =
gst_vp9_enc_handle_invisible_frame_buffer;
vpx_encoder_class->set_frame_user_data = gst_vp9_enc_set_frame_user_data;
GST_DEBUG_CATEGORY_INIT (gst_vp9enc_debug, "vp9enc", 0, "VP9 Encoder");
}
static void
gst_vp9_enc_init (GstVP9Enc * gst_vp9_enc)
{
vpx_codec_err_t status;
GstVPXEnc *gst_vpx_enc = GST_VPX_ENC (gst_vp9_enc);
GST_DEBUG_OBJECT (gst_vp9_enc, "gst_vp9_enc_init");
status =
vpx_codec_enc_config_default (gst_vp9_enc_get_algo (gst_vpx_enc),
&gst_vpx_enc->cfg, 0);
if (status != VPX_CODEC_OK) {
GST_ERROR_OBJECT (gst_vpx_enc,
"Failed to get default encoder configuration: %s",
gst_vpx_error_name (status));
gst_vpx_enc->have_default_config = FALSE;
} else {
gst_vpx_enc->have_default_config = TRUE;
}
}
static vpx_codec_iface_t *
gst_vp9_enc_get_algo (GstVPXEnc * enc)
{
return &vpx_codec_vp9_cx_algo;
}
static gboolean
gst_vp9_enc_enable_scaling (GstVPXEnc * enc)
{
return FALSE;
}
static void
gst_vp9_enc_set_image_format (GstVPXEnc * enc, vpx_image_t * image)
{
switch (enc->input_state->info.finfo->format) {
case GST_VIDEO_FORMAT_I420:
image->fmt = VPX_IMG_FMT_I420;
image->bps = 12;
image->x_chroma_shift = image->y_chroma_shift = 1;
break;
case GST_VIDEO_FORMAT_YV12:
image->fmt = VPX_IMG_FMT_YV12;
image->bps = 12;
image->x_chroma_shift = image->y_chroma_shift = 1;
break;
case GST_VIDEO_FORMAT_Y42B:
image->fmt = VPX_IMG_FMT_I422;
image->bps = 16;
image->x_chroma_shift = 1;
image->y_chroma_shift = 0;
break;
case GST_VIDEO_FORMAT_Y444:
image->fmt = VPX_IMG_FMT_I444;
image->bps = 24;
image->x_chroma_shift = image->y_chroma_shift = 0;
break;
default:
g_assert_not_reached ();
break;
}
}
static GstCaps *
gst_vp9_enc_get_new_simple_caps (GstVPXEnc * enc)
{
GstCaps *caps;
gchar *profile_str = g_strdup_printf ("%d", enc->cfg.g_profile);
caps = gst_caps_new_simple ("video/x-vp9",
"profile", G_TYPE_STRING, profile_str, NULL);
g_free (profile_str);
return caps;
}
static void
gst_vp9_enc_set_stream_info (GstVPXEnc * enc, GstCaps * caps,
GstVideoInfo * info)
{
return;
}
static void *
gst_vp9_enc_process_frame_user_data (GstVPXEnc * enc,
GstVideoCodecFrame * frame)
{
return NULL;
}
static GstFlowReturn
gst_vp9_enc_handle_invisible_frame_buffer (GstVPXEnc * enc, void *user_data,
GstBuffer * buffer)
{
GstFlowReturn ret;
g_mutex_unlock (&enc->encoder_lock);
ret = gst_pad_push (GST_VIDEO_ENCODER_SRC_PAD (enc), buffer);
g_mutex_lock (&enc->encoder_lock);
return ret;
}
static void
gst_vp9_enc_set_frame_user_data (GstVPXEnc * enc, GstVideoCodecFrame * frame,
vpx_image_t * image)
{
return;
}
#endif /* HAVE_VP9_ENCODER */