gstreamer/subprojects/gst-libav/ext/libav/gstavdeinterlace.c
Sebastian Dröge 73d0cac16c libav: Update AVCodecContext lifetime to work properly with ffmpeg 7
avcodec_close() is deprecated and it's not supported anymore to re-open
a codec, so we only ever allocate the codec in set_format() now and
always free it after usage.

As part of this, also fix various memory leaks in related code paths.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6505>
2024-07-08 14:31:39 +00:00

505 lines
15 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* This file:
* Copyright (C) 2005 Luca Ognibene <luogni@tin.it>
* Copyright (C) 2006 Martin Zlomek <martin.zlomek@itonis.tv>
*
* 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 <libavcodec/avcodec.h>
#include <libavutil/imgutils.h>
#include <libavfilter/avfilter.h>
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstav.h"
#include "gstavcodecmap.h"
#include "gstavutils.h"
/* Properties */
#define DEFAULT_MODE GST_FFMPEGDEINTERLACE_MODE_AUTO
enum
{
PROP_0,
PROP_MODE,
PROP_LAST
};
typedef enum
{
GST_FFMPEGDEINTERLACE_MODE_AUTO,
GST_FFMPEGDEINTERLACE_MODE_INTERLACED,
GST_FFMPEGDEINTERLACE_MODE_DISABLED
} GstFFMpegDeinterlaceMode;
#define GST_TYPE_FFMPEGDEINTERLACE_MODES (gst_ffmpegdeinterlace_modes_get_type ())
static GType
gst_ffmpegdeinterlace_modes_get_type (void)
{
static GType deinterlace_modes_type = 0;
static const GEnumValue modes_types[] = {
{GST_FFMPEGDEINTERLACE_MODE_AUTO, "Auto detection", "auto"},
{GST_FFMPEGDEINTERLACE_MODE_INTERLACED, "Force deinterlacing",
"interlaced"},
{GST_FFMPEGDEINTERLACE_MODE_DISABLED, "Run in passthrough mode",
"disabled"},
{0, NULL, NULL},
};
if (!deinterlace_modes_type) {
deinterlace_modes_type =
g_enum_register_static ("GstLibAVDeinterlaceModes", modes_types);
}
return deinterlace_modes_type;
}
typedef struct _GstFFMpegDeinterlace
{
GstElement element;
GstPad *sinkpad, *srcpad;
gint width, height;
gint to_size;
GstFFMpegDeinterlaceMode mode;
gboolean interlaced; /* is input interlaced? */
gboolean passthrough;
gboolean reconfigure;
GstFFMpegDeinterlaceMode new_mode;
enum AVPixelFormat pixfmt;
AVFrame from_frame, to_frame;
AVFilterContext *buffersink_ctx;
AVFilterContext *buffersrc_ctx;
AVFilterGraph *filter_graph;
AVFrame *filter_frame;
int last_width, last_height;
enum AVPixelFormat last_pixfmt;
} GstFFMpegDeinterlace;
typedef struct _GstFFMpegDeinterlaceClass
{
GstElementClass parent_class;
} GstFFMpegDeinterlaceClass;
#define GST_TYPE_FFMPEGDEINTERLACE \
(gst_ffmpegdeinterlace_get_type())
#define GST_FFMPEGDEINTERLACE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGDEINTERLACE,GstFFMpegDeinterlace))
#define GST_FFMPEGDEINTERLACE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGDEINTERLACE,GstFFMpegDeinterlace))
#define GST_IS_FFMPEGDEINTERLACE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGDEINTERLACE))
#define GST_IS_FFMPEGDEINTERLACE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGDEINTERLACE))
GType gst_ffmpegdeinterlace_get_type (void);
static void gst_ffmpegdeinterlace_set_property (GObject * self, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ffmpegdeinterlace_get_property (GObject * self, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420"))
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420"))
);
G_DEFINE_TYPE (GstFFMpegDeinterlace, gst_ffmpegdeinterlace, GST_TYPE_ELEMENT);
static GstFlowReturn gst_ffmpegdeinterlace_chain (GstPad * pad,
GstObject * parent, GstBuffer * inbuf);
static void gst_ffmpegdeinterlace_dispose (GObject * obj);
static void
gst_ffmpegdeinterlace_class_init (GstFFMpegDeinterlaceClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_ffmpegdeinterlace_set_property;
gobject_class->get_property = gst_ffmpegdeinterlace_get_property;
/**
* GstFFMpegDeinterlace:mode
*
* This selects whether the deinterlacing methods should
* always be applied or if they should only be applied
* on content that has the "interlaced" flag on the caps.
*
* Since: 0.10.13
*/
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Mode", "Deinterlace Mode",
GST_TYPE_FFMPEGDEINTERLACE_MODES,
DEFAULT_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
gst_element_class_add_static_pad_template (element_class, &src_factory);
gst_element_class_add_static_pad_template (element_class, &sink_factory);
gst_element_class_set_static_metadata (element_class,
"libav Deinterlace element", "Filter/Effect/Video/Deinterlace",
"Deinterlace video", "Luca Ognibene <luogni@tin.it>");
gobject_class->dispose = gst_ffmpegdeinterlace_dispose;
gst_type_mark_as_plugin_api (GST_TYPE_FFMPEGDEINTERLACE_MODES, 0);
}
static void
gst_ffmpegdeinterlace_update_passthrough (GstFFMpegDeinterlace * deinterlace)
{
deinterlace->passthrough =
(deinterlace->mode == GST_FFMPEGDEINTERLACE_MODE_DISABLED
|| (!deinterlace->interlaced
&& deinterlace->mode != GST_FFMPEGDEINTERLACE_MODE_INTERLACED));
GST_DEBUG_OBJECT (deinterlace, "Passthrough: %d", deinterlace->passthrough);
}
static gboolean
gst_ffmpegdeinterlace_sink_setcaps (GstPad * pad, GstObject * parent,
GstCaps * caps)
{
GstFFMpegDeinterlace *deinterlace = GST_FFMPEGDEINTERLACE (parent);
GstStructure *structure = gst_caps_get_structure (caps, 0);
const gchar *imode;
AVCodecContext *ctx;
GstCaps *src_caps;
gboolean ret;
/* FIXME: use GstVideoInfo etc. */
if (!gst_structure_get_int (structure, "width", &deinterlace->width))
return FALSE;
if (!gst_structure_get_int (structure, "height", &deinterlace->height))
return FALSE;
deinterlace->interlaced = FALSE;
imode = gst_structure_get_string (structure, "interlace-mode");
if (imode && (!strcmp (imode, "interleaved") || !strcmp (imode, "mixed"))) {
deinterlace->interlaced = TRUE;
}
gst_ffmpegdeinterlace_update_passthrough (deinterlace);
ctx = avcodec_alloc_context3 (NULL);
ctx->width = deinterlace->width;
ctx->height = deinterlace->height;
ctx->pix_fmt = AV_PIX_FMT_NB;
gst_ffmpeg_caps_with_codectype (AVMEDIA_TYPE_VIDEO, caps, ctx);
if (ctx->pix_fmt == AV_PIX_FMT_NB) {
avcodec_free_context (&ctx);
return FALSE;
}
deinterlace->pixfmt = ctx->pix_fmt;
avcodec_free_context (&ctx);
deinterlace->to_size =
av_image_get_buffer_size (deinterlace->pixfmt, deinterlace->width,
deinterlace->height, 1);
src_caps = gst_caps_copy (caps);
gst_caps_set_simple (src_caps, "interlace-mode", G_TYPE_STRING,
deinterlace->interlaced ? "progressive" : imode, NULL);
ret = gst_pad_set_caps (deinterlace->srcpad, src_caps);
gst_caps_unref (src_caps);
return ret;
}
static gboolean
gst_ffmpegdeinterlace_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstFFMpegDeinterlace *deinterlace = GST_FFMPEGDEINTERLACE (parent);
gboolean ret = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
ret = gst_ffmpegdeinterlace_sink_setcaps (pad, parent, caps);
gst_event_unref (event);
break;
}
default:
ret = gst_pad_push_event (deinterlace->srcpad, event);
break;
}
return ret;
}
static void
gst_ffmpegdeinterlace_init (GstFFMpegDeinterlace * deinterlace)
{
deinterlace->sinkpad =
gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_event_function (deinterlace->sinkpad,
gst_ffmpegdeinterlace_sink_event);
gst_pad_set_chain_function (deinterlace->sinkpad,
gst_ffmpegdeinterlace_chain);
gst_element_add_pad (GST_ELEMENT (deinterlace), deinterlace->sinkpad);
deinterlace->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
gst_element_add_pad (GST_ELEMENT (deinterlace), deinterlace->srcpad);
deinterlace->pixfmt = AV_PIX_FMT_NB;
deinterlace->interlaced = FALSE;
deinterlace->passthrough = FALSE;
deinterlace->reconfigure = FALSE;
deinterlace->mode = DEFAULT_MODE;
deinterlace->new_mode = -1;
deinterlace->last_width = -1;
deinterlace->last_height = -1;
deinterlace->last_pixfmt = AV_PIX_FMT_NONE;
}
static void
delete_filter_graph (GstFFMpegDeinterlace * deinterlace)
{
if (deinterlace->filter_graph) {
av_frame_free (&deinterlace->filter_frame);
avfilter_graph_free (&deinterlace->filter_graph);
}
}
static void
gst_ffmpegdeinterlace_dispose (GObject * obj)
{
GstFFMpegDeinterlace *deinterlace = GST_FFMPEGDEINTERLACE (obj);
delete_filter_graph (deinterlace);
G_OBJECT_CLASS (gst_ffmpegdeinterlace_parent_class)->dispose (obj);
}
static int
init_filter_graph (GstFFMpegDeinterlace * deinterlace,
enum AVPixelFormat pixfmt, int width, int height)
{
AVFilterInOut *inputs = NULL, *outputs = NULL;
char args[512];
int res;
delete_filter_graph (deinterlace);
deinterlace->filter_graph = avfilter_graph_alloc ();
snprintf (args, sizeof (args),
"buffer=video_size=%dx%d:pix_fmt=%d:time_base=1/1:pixel_aspect=0/1[in];"
"[in]yadif[out];" "[out]buffersink", width, height, pixfmt);
res =
avfilter_graph_parse2 (deinterlace->filter_graph, args, &inputs,
&outputs);
if (res < 0)
return res;
if (inputs || outputs)
return -1;
res = avfilter_graph_config (deinterlace->filter_graph, NULL);
if (res < 0)
return res;
deinterlace->buffersrc_ctx =
avfilter_graph_get_filter (deinterlace->filter_graph, "Parsed_buffer_0");
deinterlace->buffersink_ctx =
avfilter_graph_get_filter (deinterlace->filter_graph,
"Parsed_buffersink_2");
if (!deinterlace->buffersrc_ctx || !deinterlace->buffersink_ctx)
return -1;
deinterlace->filter_frame = av_frame_alloc ();
deinterlace->last_width = width;
deinterlace->last_height = height;
deinterlace->last_pixfmt = pixfmt;
return 0;
}
static int
process_filter_graph (GstFFMpegDeinterlace * deinterlace, AVFrame * dst,
const AVFrame * src, enum AVPixelFormat pixfmt, int width, int height)
{
int res;
if (!deinterlace->filter_graph || width != deinterlace->last_width ||
height != deinterlace->last_height
|| pixfmt != deinterlace->last_pixfmt) {
res = init_filter_graph (deinterlace, pixfmt, width, height);
if (res < 0)
return res;
}
memcpy (deinterlace->filter_frame->data, src->data, sizeof (src->data));
memcpy (deinterlace->filter_frame->linesize, src->linesize,
sizeof (src->linesize));
deinterlace->filter_frame->width = width;
deinterlace->filter_frame->height = height;
deinterlace->filter_frame->format = pixfmt;
res =
av_buffersrc_add_frame (deinterlace->buffersrc_ctx,
deinterlace->filter_frame);
if (res < 0)
return res;
res =
av_buffersink_get_frame (deinterlace->buffersink_ctx,
deinterlace->filter_frame);
if (res < 0)
return res;
av_image_copy (dst->data, dst->linesize,
(const uint8_t **) deinterlace->filter_frame->data,
deinterlace->filter_frame->linesize, pixfmt, width, height);
av_frame_unref (deinterlace->filter_frame);
return 0;
}
static GstFlowReturn
gst_ffmpegdeinterlace_chain (GstPad * pad, GstObject * parent,
GstBuffer * inbuf)
{
GstFFMpegDeinterlace *deinterlace = GST_FFMPEGDEINTERLACE (parent);
GstBuffer *outbuf = NULL;
GstFlowReturn result;
GstMapInfo from_map, to_map;
GST_OBJECT_LOCK (deinterlace);
if (deinterlace->reconfigure) {
GstCaps *caps;
if ((gint) deinterlace->new_mode != -1)
deinterlace->mode = deinterlace->new_mode;
deinterlace->new_mode = -1;
deinterlace->reconfigure = FALSE;
GST_OBJECT_UNLOCK (deinterlace);
if ((caps = gst_pad_get_current_caps (deinterlace->srcpad))) {
gst_ffmpegdeinterlace_sink_setcaps (deinterlace->sinkpad, parent, caps);
gst_caps_unref (caps);
}
} else {
GST_OBJECT_UNLOCK (deinterlace);
}
if (deinterlace->passthrough)
return gst_pad_push (deinterlace->srcpad, inbuf);
outbuf = gst_buffer_new_and_alloc (deinterlace->to_size);
gst_buffer_map (inbuf, &from_map, GST_MAP_READ);
gst_ffmpeg_avpicture_fill (&deinterlace->from_frame, from_map.data,
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
gst_buffer_map (outbuf, &to_map, GST_MAP_WRITE);
gst_ffmpeg_avpicture_fill (&deinterlace->to_frame, to_map.data,
deinterlace->pixfmt, deinterlace->width, deinterlace->height);
process_filter_graph (deinterlace, &deinterlace->to_frame,
&deinterlace->from_frame, deinterlace->pixfmt, deinterlace->width,
deinterlace->height);
gst_buffer_unmap (outbuf, &to_map);
gst_buffer_unmap (inbuf, &from_map);
gst_buffer_copy_into (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
result = gst_pad_push (deinterlace->srcpad, outbuf);
gst_buffer_unref (inbuf);
return result;
}
gboolean
gst_ffmpegdeinterlace_register (GstPlugin * plugin)
{
return gst_element_register (plugin, "avdeinterlace",
GST_RANK_NONE, GST_TYPE_FFMPEGDEINTERLACE);
}
static void
gst_ffmpegdeinterlace_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFFMpegDeinterlace *self;
g_return_if_fail (GST_IS_FFMPEGDEINTERLACE (object));
self = GST_FFMPEGDEINTERLACE (object);
switch (prop_id) {
case PROP_MODE:{
gint new_mode;
GST_OBJECT_LOCK (self);
new_mode = g_value_get_enum (value);
if (self->mode != new_mode && gst_pad_has_current_caps (self->srcpad)) {
self->reconfigure = TRUE;
self->new_mode = new_mode;
} else {
self->mode = new_mode;
gst_ffmpegdeinterlace_update_passthrough (self);
}
GST_OBJECT_UNLOCK (self);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}
static void
gst_ffmpegdeinterlace_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFFMpegDeinterlace *self;
g_return_if_fail (GST_IS_FFMPEGDEINTERLACE (object));
self = GST_FFMPEGDEINTERLACE (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, self->mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}