mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 20:55:55 +00:00
Remove obsolete scale and resample sources
https://bugzilla.gnome.org/show_bug.cgi?id=792900
This commit is contained in:
Mathieu Duponchelle
parent
aedcf438d0
commit
8b6516d5c5
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@ -1,307 +0,0 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* This file:
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* Copyright (C) 2005 Luca Ognibene <luogni@tin.it>
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* Copyright (C) 2006 Martin Zlomek <martin.zlomek@itonis.tv>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <libavcodec/avcodec.h>
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include "gstffmpeg.h"
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#include "gstffmpegcodecmap.h"
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typedef struct _GstFFMpegAudioResample
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{
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GstBaseTransform element;
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GstPad *sinkpad, *srcpad;
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gint in_rate, out_rate;
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gint in_channels, out_channels;
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ReSampleContext *res;
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} GstFFMpegAudioResample;
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typedef struct _GstFFMpegAudioResampleClass
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{
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GstBaseTransformClass parent_class;
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} GstFFMpegAudioResampleClass;
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#define GST_TYPE_FFMPEGAUDIORESAMPLE \
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(gst_ffmpegaudioresample_get_type())
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#define GST_FFMPEGAUDIORESAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGAUDIORESAMPLE,GstFFMpegAudioResample))
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#define GST_FFMPEGAUDIORESAMPLE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGAUDIORESAMPLE,GstFFMpegAudioResampleClass))
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#define GST_IS_FFMPEGAUDIORESAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGAUDIORESAMPLE))
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#define GST_IS_FFMPEGAUDIORESAMPLE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGAUDIORESAMPLE))
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GType gst_ffmpegaudioresample_get_type (void);
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static GstStaticPadTemplate src_factory = 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
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("audio/x-raw,"
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"format = (string) " GST_AUDIO_NE (S16) ","
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"channels = (int) { 1 , 2 }, rate = (int) [1, MAX ]")
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);
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static GstStaticPadTemplate sink_factory = 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
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("audio/x-raw,"
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"format = (string) " GST_AUDIO_NE (S16) ","
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"channels = (int) { 1 , 2 }, rate = (int) [1, MAX ]")
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);
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GST_BOILERPLATE (GstFFMpegAudioResample, gst_ffmpegaudioresample,
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GstBaseTransform, GST_TYPE_BASE_TRANSFORM);
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static void gst_ffmpegaudioresample_finalize (GObject * object);
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static GstCaps *gst_ffmpegaudioresample_transform_caps (GstBaseTransform *
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trans, GstPadDirection direction, GstCaps * caps);
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static gboolean gst_ffmpegaudioresample_transform_size (GstBaseTransform *
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trans, GstPadDirection direction, GstCaps * caps, gsize size,
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GstCaps * othercaps, gsize * othersize);
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static gboolean gst_ffmpegaudioresample_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, gsize * size);
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static gboolean gst_ffmpegaudioresample_set_caps (GstBaseTransform * trans,
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GstCaps * incaps, GstCaps * outcaps);
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static GstFlowReturn gst_ffmpegaudioresample_transform (GstBaseTransform *
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trans, GstBuffer * inbuf, GstBuffer * outbuf);
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static void
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gst_ffmpegaudioresample_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_static_pad_template (element_class, &src_factory);
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gst_element_class_add_static_pad_template (element_class, &sink_factory);
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gst_element_class_set_static_metadata (element_class,
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"libav Audio resampling element", "Filter/Converter/Audio",
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"Converts audio from one samplerate to another",
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"Edward Hervey <bilboed@bilboed.com>");
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}
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static void
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gst_ffmpegaudioresample_class_init (GstFFMpegAudioResampleClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
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gobject_class->finalize = gst_ffmpegaudioresample_finalize;
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_ffmpegaudioresample_transform_caps);
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trans_class->get_unit_size =
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GST_DEBUG_FUNCPTR (gst_ffmpegaudioresample_get_unit_size);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_ffmpegaudioresample_set_caps);
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trans_class->transform =
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GST_DEBUG_FUNCPTR (gst_ffmpegaudioresample_transform);
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trans_class->transform_size =
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GST_DEBUG_FUNCPTR (gst_ffmpegaudioresample_transform_size);
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trans_class->passthrough_on_same_caps = TRUE;
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}
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static void
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gst_ffmpegaudioresample_init (GstFFMpegAudioResample * resample,
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GstFFMpegAudioResampleClass * klass)
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{
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GstBaseTransform *trans = GST_BASE_TRANSFORM (resample);
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gst_pad_set_bufferalloc_function (trans->sinkpad, NULL);
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resample->res = NULL;
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}
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static void
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gst_ffmpegaudioresample_finalize (GObject * object)
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{
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GstFFMpegAudioResample *resample = GST_FFMPEGAUDIORESAMPLE (object);
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if (resample->res != NULL)
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audio_resample_close (resample->res);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_ffmpegaudioresample_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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GstCaps *retcaps;
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GstStructure *struc;
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retcaps = gst_caps_copy (caps);
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struc = gst_caps_get_structure (retcaps, 0);
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gst_structure_set (struc, "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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GST_LOG_OBJECT (trans, "returning caps %" GST_PTR_FORMAT, retcaps);
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return retcaps;
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}
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static gboolean
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gst_ffmpegaudioresample_transform_size (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, gsize size, GstCaps * othercaps,
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gsize * othersize)
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{
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gint inrate, outrate;
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gint inchanns, outchanns;
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GstStructure *ins, *outs;
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gboolean ret;
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guint64 conv;
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ins = gst_caps_get_structure (caps, 0);
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outs = gst_caps_get_structure (othercaps, 0);
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/* Get input/output sample rate and channels */
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ret = gst_structure_get_int (ins, "rate", &inrate);
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ret &= gst_structure_get_int (ins, "channels", &inchanns);
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ret &= gst_structure_get_int (outs, "rate", &outrate);
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ret &= gst_structure_get_int (outs, "channels", &outchanns);
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if (!ret)
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return FALSE;
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conv = gst_util_uint64_scale (size, outrate * outchanns, inrate * inchanns);
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/* Adding padding to the output buffer size, since audio_resample's internal
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* methods might write a bit further. */
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*othersize = (guint) conv + 64;
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GST_DEBUG_OBJECT (trans, "Transformed size from %d to %d", size, *othersize);
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return TRUE;
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}
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static gboolean
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gst_ffmpegaudioresample_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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gsize * size)
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{
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gint channels;
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GstStructure *structure;
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gboolean ret;
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g_assert (size);
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_structure_get_int (structure, "channels", &channels);
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g_return_val_if_fail (ret, FALSE);
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*size = 2 * channels;
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return TRUE;
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}
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static gboolean
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gst_ffmpegaudioresample_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstFFMpegAudioResample *resample = GST_FFMPEGAUDIORESAMPLE (trans);
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GstStructure *instructure = gst_caps_get_structure (incaps, 0);
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GstStructure *outstructure = gst_caps_get_structure (outcaps, 0);
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GST_LOG_OBJECT (resample, "incaps:%" GST_PTR_FORMAT, incaps);
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GST_LOG_OBJECT (resample, "outcaps:%" GST_PTR_FORMAT, outcaps);
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if (!gst_structure_get_int (instructure, "channels", &resample->in_channels))
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return FALSE;
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if (!gst_structure_get_int (instructure, "rate", &resample->in_rate))
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return FALSE;
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if (!gst_structure_get_int (outstructure, "channels",
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&resample->out_channels))
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return FALSE;
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if (!gst_structure_get_int (outstructure, "rate", &resample->out_rate))
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return FALSE;
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/* FIXME : Allow configuring the various resampling properties */
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#define TAPS 16
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resample->res =
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av_audio_resample_init (resample->out_channels, resample->in_channels,
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resample->out_rate, resample->in_rate,
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AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16, TAPS, 10, 0, 0.8);
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if (resample->res == NULL)
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return FALSE;
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return TRUE;
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}
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static GstFlowReturn
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gst_ffmpegaudioresample_transform (GstBaseTransform * trans, GstBuffer * inbuf,
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GstBuffer * outbuf)
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{
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GstFFMpegAudioResample *resample = GST_FFMPEGAUDIORESAMPLE (trans);
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gint nbsamples;
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gint ret;
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guint8 *indata, *outdata;
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gsize insize, outsize;
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gst_buffer_copy_into (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
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indata = gst_buffer_map (inbuf, &insize, NULL, GST_MAP_READ);
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nbsamples = insize / (2 * resample->in_channels);
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GST_LOG_OBJECT (resample, "input buffer duration:%" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_DURATION (inbuf)));
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outdata = gst_buffer_map (outbuf, &outsize, NULL, GST_MAP_WRITE);
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GST_DEBUG_OBJECT (resample,
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"audio_resample(ctx, output:%p [size:%d], input:%p [size:%d], nbsamples:%d",
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outdata, outsize, indata, insize, nbsamples);
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ret =
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audio_resample (resample->res, (short *) outdata, (short *) indata,
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nbsamples);
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GST_DEBUG_OBJECT (resample, "audio_resample returned %d", ret);
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GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale (ret, GST_SECOND,
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resample->out_rate);
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outsize = ret * 2 * resample->out_channels;
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gst_buffer_unmap (outbuf, outdata, outsize);
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gst_buffer_unmap (inbuf, indata, insize);
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GST_LOG_OBJECT (resample, "Output buffer duration:%" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
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return GST_FLOW_OK;
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}
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gboolean
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gst_ffmpegaudioresample_register (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "avaudioresample",
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GST_RANK_NONE, GST_TYPE_FFMPEGAUDIORESAMPLE);
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}
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@ -1,401 +0,0 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* This file:
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* Copyright (C) 2005 Luca Ognibene <luogni@tin.it>
|
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* Copyright (C) 2006 Martin Zlomek <martin.zlomek@itonis.tv>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <libavcodec/avcodec.h>
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include "gstffmpeg.h"
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#include "gstffmpegcodecmap.h"
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typedef struct _GstFFMpegScale
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{
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GstBaseTransform element;
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GstPad *sinkpad, *srcpad;
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gint in_width, in_height;
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gint out_width, out_height;
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enum PixelFormat pixfmt;
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ImgReSampleContext *res;
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} GstFFMpegScale;
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typedef struct _GstFFMpegScaleClass
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{
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GstBaseTransformClass parent_class;
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} GstFFMpegScaleClass;
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#define GST_TYPE_FFMPEGSCALE \
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(gst_ffmpegscale_get_type())
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#define GST_FFMPEGSCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGSCALE,GstFFMpegScale))
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#define GST_FFMPEGSCALE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGSCALE,GstFFMpegScaleClass))
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#define GST_IS_FFMPEGSCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGSCALE))
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#define GST_IS_FFMPEGSCALE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGSCALE))
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static GstStaticPadTemplate src_factory = 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_YUV ("I420"))
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);
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static GstStaticPadTemplate sink_factory = 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 (GST_VIDEO_CAPS_YUV ("I420"))
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);
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GST_BOILERPLATE (GstFFMpegScale, gst_ffmpegscale, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM);
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static void gst_ffmpegscale_finalize (GObject * object);
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static GstCaps *gst_ffmpegscale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static void gst_ffmpegscale_fixate_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
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static gboolean gst_ffmpegscale_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, guint * size);
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static gboolean gst_ffmpegscale_set_caps (GstBaseTransform * trans,
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GstCaps * incaps, GstCaps * outcaps);
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static GstFlowReturn gst_ffmpegscale_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static gboolean gst_ffmpegscale_handle_src_event (GstPad * pad,
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GstEvent * event);
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static void
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gst_ffmpegscale_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_static_pad_template (element_class, &src_factory);
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gst_element_class_add_static_pad_template (element_class, &sink_factory);
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gst_element_class_set_static_metadata (element_class, "libav Scale element",
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"Filter/Converter/Video/Scaler",
|
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"Converts video from one resolution to another",
|
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"Luca Ognibene <luogni@tin.it>");
|
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}
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||||
|
||||
static void
|
||||
gst_ffmpegscale_class_init (GstFFMpegScaleClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
|
||||
|
||||
gobject_class->finalize = gst_ffmpegscale_finalize;
|
||||
|
||||
trans_class->transform_caps =
|
||||
GST_DEBUG_FUNCPTR (gst_ffmpegscale_transform_caps);
|
||||
trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_ffmpegscale_fixate_caps);
|
||||
trans_class->get_unit_size =
|
||||
GST_DEBUG_FUNCPTR (gst_ffmpegscale_get_unit_size);
|
||||
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_ffmpegscale_set_caps);
|
||||
trans_class->transform = GST_DEBUG_FUNCPTR (gst_ffmpegscale_transform);
|
||||
|
||||
trans_class->passthrough_on_same_caps = TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_ffmpegscale_init (GstFFMpegScale * scale, GstFFMpegScaleClass * klass)
|
||||
{
|
||||
GstBaseTransform *trans = GST_BASE_TRANSFORM (scale);
|
||||
|
||||
gst_pad_set_event_function (trans->srcpad, gst_ffmpegscale_handle_src_event);
|
||||
|
||||
scale->pixfmt = AV_PIX_FMT_NB;
|
||||
scale->res = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_ffmpegscale_finalize (GObject * object)
|
||||
{
|
||||
GstFFMpegScale *scale = GST_FFMPEGSCALE (object);
|
||||
|
||||
if (scale->res != NULL)
|
||||
img_resample_close (scale->res);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static GstCaps *
|
||||
gst_ffmpegscale_transform_caps (GstBaseTransform * trans,
|
||||
GstPadDirection direction, GstCaps * caps)
|
||||
{
|
||||
GstCaps *retcaps;
|
||||
int i;
|
||||
|
||||
retcaps = gst_caps_copy (caps);
|
||||
|
||||
for (i = 0; i < gst_caps_get_size (retcaps); i++) {
|
||||
GstStructure *structure = gst_caps_get_structure (retcaps, i);
|
||||
|
||||
gst_structure_set (structure,
|
||||
"width", GST_TYPE_INT_RANGE, 16, 4096,
|
||||
"height", GST_TYPE_INT_RANGE, 16, 4096, NULL);
|
||||
gst_structure_remove_field (structure, "pixel-aspect-ratio");
|
||||
}
|
||||
|
||||
return retcaps;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_ffmpegscale_fixate_caps (GstBaseTransform * trans,
|
||||
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
|
||||
{
|
||||
GstStructure *instructure = gst_caps_get_structure (caps, 0);
|
||||
GstStructure *outstructure = gst_caps_get_structure (othercaps, 0);
|
||||
const GValue *in_par, *out_par;
|
||||
|
||||
in_par = gst_structure_get_value (instructure, "pixel-aspect-ratio");
|
||||
out_par = gst_structure_get_value (outstructure, "pixel-aspect-ratio");
|
||||
|
||||
if (in_par && out_par) {
|
||||
GValue out_ratio = { 0, }; /* w/h of output video */
|
||||
int in_w, in_h, in_par_n, in_par_d, out_par_n, out_par_d;
|
||||
int count = 0, w = 0, h = 0, num, den;
|
||||
|
||||
/* if both width and height are already fixed, we can't do anything
|
||||
* about it anymore */
|
||||
if (gst_structure_get_int (outstructure, "width", &w))
|
||||
++count;
|
||||
if (gst_structure_get_int (outstructure, "height", &h))
|
||||
++count;
|
||||
if (count == 2) {
|
||||
GST_DEBUG_OBJECT (trans, "dimensions already set to %dx%d, not fixating",
|
||||
w, h);
|
||||
return;
|
||||
}
|
||||
|
||||
gst_structure_get_int (instructure, "width", &in_w);
|
||||
gst_structure_get_int (instructure, "height", &in_h);
|
||||
in_par_n = gst_value_get_fraction_numerator (in_par);
|
||||
in_par_d = gst_value_get_fraction_denominator (in_par);
|
||||
out_par_n = gst_value_get_fraction_numerator (out_par);
|
||||
out_par_d = gst_value_get_fraction_denominator (out_par);
|
||||
|
||||
g_value_init (&out_ratio, GST_TYPE_FRACTION);
|
||||
gst_value_set_fraction (&out_ratio, in_w * in_par_n * out_par_d,
|
||||
in_h * in_par_d * out_par_n);
|
||||
num = gst_value_get_fraction_numerator (&out_ratio);
|
||||
den = gst_value_get_fraction_denominator (&out_ratio);
|
||||
GST_DEBUG_OBJECT (trans,
|
||||
"scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
|
||||
in_w, in_h, in_par_n, in_par_d, out_par_n, out_par_d);
|
||||
GST_DEBUG_OBJECT (trans, "resulting output should respect ratio of %d/%d",
|
||||
num, den);
|
||||
|
||||
/* now find a width x height that respects this display ratio.
|
||||
* prefer those that have one of w/h the same as the incoming video
|
||||
* using wd / hd = num / den */
|
||||
|
||||
/* start with same height, because of interlaced video */
|
||||
/* check hd / den is an integer scale factor, and scale wd with the PAR */
|
||||
if (in_h % den == 0) {
|
||||
GST_DEBUG_OBJECT (trans, "keeping video height");
|
||||
h = in_h;
|
||||
w = h * num / den;
|
||||
} else if (in_w % num == 0) {
|
||||
GST_DEBUG_OBJECT (trans, "keeping video width");
|
||||
w = in_w;
|
||||
h = w * den / num;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (trans, "approximating but keeping video height");
|
||||
h = in_h;
|
||||
w = h * num / den;
|
||||
}
|
||||
GST_DEBUG_OBJECT (trans, "scaling to %dx%d", w, h);
|
||||
|
||||
/* now fixate */
|
||||
gst_structure_fixate_field_nearest_int (outstructure, "width", w);
|
||||
gst_structure_fixate_field_nearest_int (outstructure, "height", h);
|
||||
} else {
|
||||
gint width, height;
|
||||
|
||||
if (gst_structure_get_int (instructure, "width", &width)) {
|
||||
if (gst_structure_has_field (outstructure, "width"))
|
||||
gst_structure_fixate_field_nearest_int (outstructure, "width", width);
|
||||
}
|
||||
if (gst_structure_get_int (instructure, "height", &height)) {
|
||||
if (gst_structure_has_field (outstructure, "height"))
|
||||
gst_structure_fixate_field_nearest_int (outstructure, "height", height);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_ffmpegscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
|
||||
guint * size)
|
||||
{
|
||||
GstStructure *structure = gst_caps_get_structure (caps, 0);
|
||||
gint width, height;
|
||||
AVCodecContext *ctx;
|
||||
|
||||
if (!gst_structure_get_int (structure, "width", &width))
|
||||
return FALSE;
|
||||
if (!gst_structure_get_int (structure, "height", &height))
|
||||
return FALSE;
|
||||
|
||||
ctx = avcodec_alloc_context ();
|
||||
ctx->width = width;
|
||||
ctx->height = height;
|
||||
ctx->pix_fmt = AV_PIX_FMT_NB;
|
||||
gst_ffmpeg_caps_with_codectype (AV_CODEC_TYPE_VIDEO, caps, ctx);
|
||||
if (ctx->pix_fmt == AV_PIX_FMT_NB) {
|
||||
av_free (ctx);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
*size =
|
||||
(guint) av_image_get_buffer_size (pix->pix_fmt, ctx->width, ctx->height,
|
||||
1);
|
||||
|
||||
av_free (ctx);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_ffmpegscale_set_caps (GstBaseTransform * trans, GstCaps * incaps,
|
||||
GstCaps * outcaps)
|
||||
{
|
||||
GstFFMpegScale *scale = GST_FFMPEGSCALE (trans);
|
||||
GstStructure *instructure = gst_caps_get_structure (incaps, 0);
|
||||
GstStructure *outstructure = gst_caps_get_structure (outcaps, 0);
|
||||
gint par_num, par_den;
|
||||
AVCodecContext *ctx;
|
||||
|
||||
if (!gst_structure_get_int (instructure, "width", &scale->in_width))
|
||||
return FALSE;
|
||||
if (!gst_structure_get_int (instructure, "height", &scale->in_height))
|
||||
return FALSE;
|
||||
|
||||
if (!gst_structure_get_int (outstructure, "width", &scale->out_width))
|
||||
return FALSE;
|
||||
if (!gst_structure_get_int (outstructure, "height", &scale->out_height))
|
||||
return FALSE;
|
||||
|
||||
if (gst_structure_get_fraction (instructure, "pixel-aspect-ratio",
|
||||
&par_num, &par_den)) {
|
||||
gst_structure_set (outstructure,
|
||||
"pixel-aspect-ratio", GST_TYPE_FRACTION,
|
||||
par_num * scale->in_width / scale->out_width,
|
||||
par_den * scale->in_height / scale->out_height, NULL);
|
||||
}
|
||||
|
||||
ctx = avcodec_alloc_context ();
|
||||
ctx->width = scale->in_width;
|
||||
ctx->height = scale->in_height;
|
||||
ctx->pix_fmt = AV_PIX_FMT_NB;
|
||||
gst_ffmpeg_caps_with_codectype (AV_CODEC_TYPE_VIDEO, incaps, ctx);
|
||||
if (ctx->pix_fmt == AV_PIX_FMT_NB) {
|
||||
av_free (ctx);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
scale->pixfmt = ctx->pix_fmt;
|
||||
|
||||
av_free (ctx);
|
||||
|
||||
scale->res = img_resample_init (scale->out_width, scale->out_height,
|
||||
scale->in_width, scale->in_height);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_ffmpegscale_transform (GstBaseTransform * trans, GstBuffer * inbuf,
|
||||
GstBuffer * outbuf)
|
||||
{
|
||||
GstFFMpegScale *scale = GST_FFMPEGSCALE (trans);
|
||||
AVPicture in_frame, out_frame;
|
||||
|
||||
gst_buffer_copy_metadata (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS);
|
||||
|
||||
gst_ffmpeg_avpicture_fill (&in_frame,
|
||||
GST_BUFFER_DATA (inbuf),
|
||||
scale->pixfmt, scale->in_width, scale->in_height);
|
||||
|
||||
gst_ffmpeg_avpicture_fill (&out_frame,
|
||||
GST_BUFFER_DATA (outbuf),
|
||||
scale->pixfmt, scale->out_width, scale->out_height);
|
||||
|
||||
img_resample (scale->res, &out_frame, &in_frame);
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_ffmpegscale_handle_src_event (GstPad * pad, GstEvent * event)
|
||||
{
|
||||
GstFFMpegScale *scale;
|
||||
GstStructure *structure;
|
||||
gdouble pointer;
|
||||
gboolean res;
|
||||
|
||||
scale = GST_FFMPEGSCALE (gst_pad_get_parent (pad));
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_NAVIGATION:
|
||||
event =
|
||||
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
|
||||
|
||||
structure = (GstStructure *) gst_event_get_structure (event);
|
||||
if (gst_structure_get_double (structure, "pointer_x", &pointer)) {
|
||||
gst_structure_set (structure,
|
||||
"pointer_x", G_TYPE_DOUBLE,
|
||||
pointer * scale->in_width / scale->out_width, NULL);
|
||||
}
|
||||
if (gst_structure_get_double (structure, "pointer_y", &pointer)) {
|
||||
gst_structure_set (structure,
|
||||
"pointer_y", G_TYPE_DOUBLE,
|
||||
pointer * scale->in_height / scale->out_height, NULL);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
res = gst_pad_event_default (pad, event);
|
||||
|
||||
gst_object_unref (scale);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
gboolean
|
||||
gst_ffmpegscale_register (GstPlugin * plugin)
|
||||
{
|
||||
return gst_element_register (plugin, "avvideoscale",
|
||||
GST_RANK_NONE, GST_TYPE_FFMPEGSCALE);
|
||||
}
|
||||
Loading…
Reference in a new issue