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webp: Add WebP image decoder plugin

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=706285
This commit is contained in:
Sreerenj Balachandran 2013-08-24 00:46:38 +03:00 committed by Sebastian Dröge
parent e481ecbf22
commit 499d515a9f
6 changed files with 620 additions and 2 deletions
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12
configure.ac
View file

@ -1223,6 +1223,16 @@ AG_GST_CHECK_FEATURE(WAYLAND, [wayland sink], wayland , [
])
])
dnl **** WebP ****
translit(dnm, m, l) AM_CONDITIONAL(USE_WEBP, true)
AG_GST_CHECK_FEATURE(WEBP, [WebP], webp , [
PKG_CHECK_MODULES(WEBP, libwebp >= 0.2.1, [
HAVE_WEBP="yes" ], [ HAVE_WEBP="no"
])
AC_SUBST(WEBP_CFLAGS)
AC_SUBST(WEBP_LIBS)
])
dnl *** Daala ***
translit(dnm, m, l) AM_CONDITIONAL(USE_DAALA, true)
AG_GST_CHECK_FEATURE(DAALA, [daala], daala, [
@ -2239,6 +2249,7 @@ AM_CONDITIONAL(USE_RTMP, false)
AM_CONDITIONAL(USE_TELETEXTDEC, false)
AM_CONDITIONAL(USE_SNDIO, false)
AM_CONDITIONAL(USE_UVCH264, false)
AM_CONDITIONAL(USE_WEBP, false)
fi dnl of EXT plugins
@ -2498,6 +2509,7 @@ ext/gsettings/Makefile
ext/gsettings/org.freedesktop.gstreamer.default-elements.gschema.xml
ext/spc/Makefile
ext/timidity/Makefile
ext/webp/Makefile
ext/xvid/Makefile
ext/zbar/Makefile
po/Makefile.in

11
ext/Makefile.am
View file

@ -376,6 +376,11 @@ else
HLS_DIR =
endif
if USE_WEBP
WEBP_DIR=webp
else
WEBP_DIR=
endif
SUBDIRS=\
$(VOAACENC_DIR) \
@ -439,7 +444,8 @@ SUBDIRS=\
$(XVID_DIR) \
$(ZBAR_DIR) \
$(RTMP_DIR) \
$(HLS_DIR)
$(HLS_DIR) \
$(WEBP_DIR)
DIST_SUBDIRS = \
assrender \
@ -499,6 +505,7 @@ DIST_SUBDIRS = \
voamrwbenc \
xvid \
zbar \
rtmp
rtmp \
webp
include $(top_srcdir)/common/parallel-subdirs.mak

17
ext/webp/Makefile.am Normal file
View file

@ -0,0 +1,17 @@
plugin_LTLIBRARIES = libgstwebp.la
noinst_HEADERS = gstwebpdec.h
libgstwebp_la_SOURCES = gstwebp.c \
gstwebpdec.c
libgstwebp_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(WEBP_CFLAGS)
libgstwebp_la_LIBADD = \
$(GST_PLUGINS_BASE_LIBS) \
-lgstvideo-$(GST_API_VERSION) \
$(GST_BASE_LIBS) \
$(GST_LIBS) \
$(WEBP_LIBS)
libgstwebp_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstwebp_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)

42
ext/webp/gstwebp.c Normal file
View file

@ -0,0 +1,42 @@
/* GStreamer
* Copyright (C) <2013> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Copyright (C) <2013> Intel Corporation
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <gst/gst.h>
#include "gstwebpdec.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
gst_webp_dec_register (plugin);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
webp,
"WebP plugin",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

466
ext/webp/gstwebpdec.c Normal file
View file

@ -0,0 +1,466 @@
/* GStreamer
* Copyright (C) <2013> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Copyright (C) <2013> Intel Corporation
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstwebpdec.h"
#define MIN_WIDTH 1
#define MAX_WIDTH 16383
#define MIN_HEIGHT 1
#define MAX_HEIGHT 16383
enum
{
PROP_0,
PROP_BYPASS_FILTERING,
PROP_NO_FANCY_UPSAMPLING,
PROP_USE_THREADS
};
static GstStaticPadTemplate gst_webp_dec_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("image/webp")
);
/*Fixme: Add YUV support */
static GstStaticPadTemplate gst_webp_dec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
("{ RGB, RGBA, BGR, BGRA, ARGB, RGB16}"))
);
GST_DEBUG_CATEGORY_STATIC (webp_dec_debug);
#define GST_CAT_DEFAULT webp_dec_debug
static void gst_webp_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_webp_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_webp_dec_start (GstVideoDecoder * bdec);
static gboolean gst_webp_dec_stop (GstVideoDecoder * bdec);
static gboolean gst_webp_dec_set_format (GstVideoDecoder * dec,
GstVideoCodecState * state);
static GstFlowReturn gst_webp_dec_parse (GstVideoDecoder * bdec,
GstVideoCodecFrame * frame, GstAdapter * adapter, gboolean at_eos);
static GstFlowReturn gst_webp_dec_handle_frame (GstVideoDecoder * bdec,
GstVideoCodecFrame * frame);
static gboolean gst_webp_dec_decide_allocation (GstVideoDecoder * bdec,
GstQuery * query);
static gboolean gst_webp_dec_reset_frame (GstWebPDec * webpdec);
#define gst_webp_dec_parent_class parent_class
G_DEFINE_TYPE (GstWebPDec, gst_webp_dec, GST_TYPE_VIDEO_DECODER);
static void
gst_webp_dec_class_init (GstWebPDecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstVideoDecoderClass *vdec_class;
gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass;
vdec_class = (GstVideoDecoderClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_webp_dec_set_property;
gobject_class->get_property = gst_webp_dec_get_property;
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_webp_dec_src_pad_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_webp_dec_sink_pad_template));
gst_element_class_set_static_metadata (element_class, "WebP image decoder",
"Codec/Decoder/Image",
"Decode images from WebP format",
"Sreerenj Balachandran <sreerenj.balachandrn@intel.com>");
g_object_class_install_property (gobject_class, PROP_BYPASS_FILTERING,
g_param_spec_boolean ("bypass-filtering", "Bypass Filtering",
"When enabled, skip the in-loop filtering", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NO_FANCY_UPSAMPLING,
g_param_spec_boolean ("no-fancy-upsampling", "No Fancy Upsampling",
"When enabled, use faster pointwise upsampler", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_USE_THREADS,
g_param_spec_boolean ("use-threads", "Use Threads",
"When enabled, use multi-threaded decoding", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
vdec_class->start = gst_webp_dec_start;
vdec_class->stop = gst_webp_dec_stop;
vdec_class->parse = gst_webp_dec_parse;
vdec_class->set_format = gst_webp_dec_set_format;
vdec_class->handle_frame = gst_webp_dec_handle_frame;
vdec_class->decide_allocation = gst_webp_dec_decide_allocation;
GST_DEBUG_CATEGORY_INIT (webp_dec_debug, "webpdec", 0, "WebP decoder");
}
static void
gst_webp_dec_init (GstWebPDec * dec)
{
GST_DEBUG ("Initialize the webp decoder");
memset (&dec->config, 0, sizeof (dec->config));
dec->saw_header = FALSE;
dec->bypass_filtering = FALSE;
dec->no_fancy_upsampling = FALSE;
dec->use_threads = FALSE;
}
static gboolean
gst_webp_dec_reset_frame (GstWebPDec * webpdec)
{
GST_DEBUG ("Reset the current frame properties");
webpdec->saw_header = FALSE;
if (!WebPInitDecoderConfig (&webpdec->config)) {
GST_WARNING_OBJECT (webpdec,
"Failed to configure the WebP image decoding libraray");
return FALSE;
}
return TRUE;
}
static void
gst_webp_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstWebPDec *dec;
dec = GST_WEBP_DEC (object);
switch (prop_id) {
case PROP_BYPASS_FILTERING:
dec->bypass_filtering = g_value_get_boolean (value);
break;
case PROP_NO_FANCY_UPSAMPLING:
dec->no_fancy_upsampling = g_value_get_boolean (value);
break;
case PROP_USE_THREADS:
dec->use_threads = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_webp_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstWebPDec *dec;
dec = GST_WEBP_DEC (object);
switch (prop_id) {
case PROP_BYPASS_FILTERING:
g_value_set_boolean (value, dec->bypass_filtering);
break;
case PROP_NO_FANCY_UPSAMPLING:
g_value_set_boolean (value, dec->no_fancy_upsampling);
break;
case PROP_USE_THREADS:
g_value_set_boolean (value, dec->use_threads);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_webp_dec_start (GstVideoDecoder * decoder)
{
GstWebPDec *webpdec = (GstWebPDec *) decoder;
gst_video_decoder_set_packetized (GST_VIDEO_DECODER (webpdec), FALSE);
return gst_webp_dec_reset_frame (webpdec);
}
static gboolean
gst_webp_dec_stop (GstVideoDecoder * bdec)
{
GstWebPDec *webpdec = (GstWebPDec *) bdec;
if (webpdec->input_state) {
gst_video_codec_state_unref (webpdec->input_state);
webpdec->input_state = NULL;
}
if (webpdec->output_state) {
gst_video_codec_state_unref (webpdec->output_state);
webpdec->output_state = NULL;
}
return TRUE;
}
static gboolean
gst_webp_dec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstWebPDec *webpdec = (GstWebPDec *) decoder;
GstVideoInfo *info = &state->info;
if (webpdec->input_state)
gst_video_codec_state_unref (webpdec->input_state);
webpdec->input_state = gst_video_codec_state_ref (state);
if (GST_VIDEO_INFO_FPS_N (info) != 1 && GST_VIDEO_INFO_FPS_D (info) != 1)
gst_video_decoder_set_packetized (decoder, TRUE);
else
gst_video_decoder_set_packetized (decoder, FALSE);
return TRUE;
}
static gboolean
gst_webp_dec_decide_allocation (GstVideoDecoder * bdec, GstQuery * query)
{
GstBufferPool *pool = NULL;
GstStructure *config;
if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (bdec, query))
return FALSE;
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
if (pool == NULL)
return FALSE;
config = gst_buffer_pool_get_config (pool);
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
}
gst_buffer_pool_set_config (pool, config);
gst_object_unref (pool);
return TRUE;
}
static GstFlowReturn
gst_webp_dec_parse (GstVideoDecoder * decoder, GstVideoCodecFrame * frame,
GstAdapter * adapter, gboolean at_eos)
{
gsize toadd = 0;
gsize size;
gconstpointer data;
GstByteReader reader;
GstWebPDec *webpdec = (GstWebPDec *) decoder;
size = gst_adapter_available (adapter);
GST_DEBUG_OBJECT (decoder, "parsing webp image data (%u bytes)", size);
if (at_eos) {
GST_DEBUG ("Flushing all data out");
toadd = size;
/* If we have leftover data, throw it away */
if (!webpdec->saw_header)
goto drop_frame;
goto have_full_frame;
}
if (!webpdec->saw_header) {
guint32 code;
if (size < 12)
goto need_more_data;
data = gst_adapter_map (adapter, size);
gst_byte_reader_init (&reader, data, size);
if (!gst_byte_reader_get_uint32_le (&reader, &code))
goto error;
if (code == GST_MAKE_FOURCC ('R', 'I', 'F', 'F')) {
if (!gst_byte_reader_get_uint32_le (&reader, &webpdec->frame_size))
goto error;
if (!gst_byte_reader_get_uint32_le (&reader, &code))
goto error;
if (code == GST_MAKE_FOURCC ('W', 'E', 'B', 'P'))
webpdec->saw_header = TRUE;
}
}
if (!webpdec->saw_header)
goto error;
if (size >= (webpdec->frame_size + 8)) {
toadd = webpdec->frame_size + 8;
webpdec->saw_header = FALSE;
goto have_full_frame;
}
need_more_data:
return GST_VIDEO_DECODER_FLOW_NEED_DATA;
have_full_frame:
if (toadd)
gst_video_decoder_add_to_frame (decoder, toadd);
return gst_video_decoder_have_frame (decoder);
drop_frame:
gst_adapter_flush (adapter, size);
return GST_FLOW_OK;
error:
g_assert_not_reached ();
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_webp_dec_update_src_caps (GstWebPDec * dec, GstMapInfo * map_info)
{
WebPBitstreamFeatures features;
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
if (WebPGetFeatures (map_info->data, map_info->size,
&features) != VP8_STATUS_OK) {
GST_ERROR_OBJECT (dec, "Failed to execute WebPGetFeatures");
return GST_FLOW_ERROR;
}
if (features.width < MIN_WIDTH || features.width > MAX_WIDTH
|| features.height < MIN_HEIGHT || features.height > MAX_HEIGHT) {
GST_ERROR_OBJECT (dec, "Dimensions of the frame is unspported by libwebp");
return GST_FLOW_ERROR;
}
/*Fixme: Add support for other formats */
if (features.has_alpha) {
format = GST_VIDEO_FORMAT_ARGB;
dec->colorspace = MODE_ARGB;
} else {
format = GST_VIDEO_FORMAT_RGB;
dec->colorspace = MODE_RGB;
}
/* Check if output state changed */
if (dec->output_state) {
GstVideoInfo *info = &dec->output_state->info;
if (features.width == GST_VIDEO_INFO_WIDTH (info) &&
features.height == GST_VIDEO_INFO_HEIGHT (info) &&
GST_VIDEO_INFO_FORMAT (info) == format) {
goto beach;
}
gst_video_codec_state_unref (dec->output_state);
}
dec->output_state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (dec), format,
features.width, features.height, dec->input_state);
gst_video_decoder_negotiate (GST_VIDEO_DECODER (dec));
beach:
return GST_FLOW_OK;
}
static GstFlowReturn
gst_webp_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstWebPDec *webpdec = (GstWebPDec *) decoder;
GstMapInfo map_info;
GstFlowReturn ret = GST_FLOW_OK;
GstVideoFrame vframe;
gst_buffer_map (frame->input_buffer, &map_info, GST_MAP_READ);
ret = gst_webp_dec_update_src_caps (webpdec, &map_info);
if (ret != GST_FLOW_OK)
goto done;
ret = gst_video_decoder_allocate_output_frame (decoder, frame);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
GST_ERROR_OBJECT (decoder, "failed to allocate output frame");
ret = GST_FLOW_ERROR;
goto done;
}
if (!gst_video_frame_map (&vframe, &webpdec->output_state->info,
frame->output_buffer, GST_MAP_READWRITE)) {
GST_ERROR_OBJECT (decoder, "Failed to map output videoframe");
ret = GST_FLOW_ERROR;
goto done;
}
/* configure output buffer parameteres */
webpdec->config.options.bypass_filtering = webpdec->bypass_filtering;
webpdec->config.options.no_fancy_upsampling = webpdec->no_fancy_upsampling;
webpdec->config.options.use_threads = webpdec->use_threads;
webpdec->config.output.colorspace = webpdec->colorspace;
webpdec->config.output.u.RGBA.rgba = (uint8_t *) vframe.map[0].data;
webpdec->config.output.u.RGBA.stride =
GST_VIDEO_FRAME_COMP_STRIDE (&vframe, 0);
webpdec->config.output.u.RGBA.size = GST_VIDEO_FRAME_SIZE (&vframe);
webpdec->config.output.is_external_memory = 1;
if (WebPDecode (map_info.data, map_info.size,
&webpdec->config) != VP8_STATUS_OK) {
GST_ERROR_OBJECT (decoder, "Failed to decode the webp frame");
ret = GST_FLOW_ERROR;
goto done;
}
gst_video_frame_unmap (&vframe);
gst_buffer_unmap (frame->input_buffer, &map_info);
ret = gst_video_decoder_finish_frame (decoder, frame);
if (!gst_webp_dec_reset_frame (webpdec)) {
ret = GST_FLOW_ERROR;
goto done;
}
done:
return ret;
}
gboolean
gst_webp_dec_register (GstPlugin * plugin)
{
return gst_element_register (plugin, "webpdec",
GST_RANK_PRIMARY, GST_TYPE_WEBP_DEC);
}

74
ext/webp/gstwebpdec.h Normal file
View file

@ -0,0 +1,74 @@
/* GStreamer
* Copyright (C) <2013> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Copyright (C) <2013> Intel Corporation
*
* 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_WEBP_DEC_H__
#define __GST_WEBP_DEC_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideodecoder.h>
#include <gst/base/gstadapter.h>
#include <gst/base/gstbytereader.h>
#include <stdio.h>
#include <webp/decode.h>
G_BEGIN_DECLS
#define GST_TYPE_WEBP_DEC \
(gst_webp_dec_get_type())
#define GST_WEBP_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WEBP_DEC,GstWebPDec))
#define GST_WEBP_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WEBP_DEC,GstWebPDecClass))
#define GST_IS_WEBP_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WEBP_DEC))
#define GST_IS_WEBP_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WEBP_DEC))
typedef struct _GstWebPDec GstWebPDec;
typedef struct _GstWebPDecClass GstWebPDecClass;
struct _GstWebPDec {
GstVideoDecoder decoder;
GstVideoCodecState *input_state;
GstVideoCodecState *output_state;
gboolean saw_header;
guint frame_size;
/* properties */
gboolean bypass_filtering;
gboolean no_fancy_upsampling;
gboolean use_threads;
WEBP_CSP_MODE colorspace;
WebPDecoderConfig config;
};
struct _GstWebPDecClass {
GstVideoDecoderClass decoder_class;
};
GType gst_webp_dec_get_type (void);
gboolean gst_webp_dec_register (GstPlugin * plugin);
#endif /* __GST_WEBP_DEC_H__ */