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avviddec: Introduce a class for shared properties

Browse source 
Without a parent class,the documentation would need to be duplicated for
every CODECs. This patch adds an abstract class in between GstVideoDecoder
and the element.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3311>
This commit is contained in:
Nicolas Dufresne 2022-11-01 11:13:23 -04:00 committed by GStreamer Marge Bot
parent af05abdb79
commit 99ec53073a
7 changed files with 88 additions and 61 deletions
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2
subprojects/gst-libav/ext/libav/gstav.c
View file

@ -61,7 +61,7 @@ gst_ffmpeg_avcodec_is_ffmpeg (void)
}
int
gst_ffmpeg_avcodec_open (AVCodecContext * avctx, AVCodec * codec)
gst_ffmpeg_avcodec_open (AVCodecContext * avctx, const AVCodec * codec)
{
int ret;

2
subprojects/gst-libav/ext/libav/gstav.h
View file

@ -44,7 +44,7 @@ extern gboolean gst_ffmpegvidenc_register (GstPlugin * plugin);
extern gboolean gst_ffmpegmux_register (GstPlugin * plugin);
extern gboolean gst_ffmpegdeinterlace_register (GstPlugin * plugin);
int gst_ffmpeg_avcodec_open (AVCodecContext *avctx, AVCodec *codec);
int gst_ffmpeg_avcodec_open (AVCodecContext *avctx, const AVCodec *codec);
int gst_ffmpeg_avcodec_close (AVCodecContext *avctx);
int gst_ffmpeg_av_find_stream_info(AVFormatContext *ic);

4
subprojects/gst-libav/ext/libav/gstavcodecmap.c
View file

@ -244,7 +244,7 @@ gst_ffmpeg_video_set_pix_fmts (GstCaps * caps, const enum AVPixelFormat *fmts)
* but I'm too lazy today. Maybe later.
*/
static GstCaps *
gst_ff_vid_caps_new (AVCodecContext * context, AVCodec * codec,
gst_ff_vid_caps_new (AVCodecContext * context, const AVCodec * codec,
enum AVCodecID codec_id, gboolean encode, const char *mimetype,
const char *fieldname, ...)
{
@ -2562,7 +2562,7 @@ gst_ffmpeg_codectype_to_audio_caps (AVCodecContext * context,
GstCaps *
gst_ffmpeg_codectype_to_video_caps (AVCodecContext * context,
enum AVCodecID codec_id, gboolean encode, AVCodec * codec)
enum AVCodecID codec_id, gboolean encode, const AVCodec * codec)
{
GstCaps *caps;

2
subprojects/gst-libav/ext/libav/gstavcodecmap.h
View file

@ -56,7 +56,7 @@ GstCaps *
gst_ffmpeg_codectype_to_video_caps (AVCodecContext *context,
enum AVCodecID codec_id,
gboolean encode,
AVCodec *codec);
const AVCodec *codec);
/*
* caps_to_codecid () transforms a GstCaps that belongs to

5
subprojects/gst-libav/ext/libav/gstavutils.h
View file

@ -114,6 +114,11 @@ av_smp_format_depth(enum AVSampleFormat smp_fmt);
GstBuffer *
new_aligned_buffer (gint size);
/**
* GstAvCodecCompliance:
*
* Since: 1.22
*/
typedef enum
{
GST_AV_CODEC_COMPLIANCE_AUTO = G_MAXINT,

111
subprojects/gst-libav/ext/libav/gstavviddec.c
View file

@ -65,9 +65,6 @@ enum
};
/* A number of function prototypes are given so we can refer to them later. */
static void gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass);
static void gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass);
static void gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec);
static void gst_ffmpegviddec_finalize (GObject * object);
static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
@ -104,9 +101,10 @@ static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
AVCodecContext * context);
#define GST_FFDEC_PARAMS_QDATA g_quark_from_static_string("avdec-params")
G_DEFINE_ABSTRACT_TYPE (GstFFMpegVidDec, gst_ffmpegviddec,
GST_TYPE_VIDEO_DECODER);
static GstElementClass *parent_class = NULL;
#define parent_class gst_ffmpegviddec_parent_class
#define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
static GType
@ -189,17 +187,40 @@ dup_caps_with_alternate (GstCaps * caps)
}
static void
gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gst_ffmpegviddec_set_property;
gobject_class->get_property = gst_ffmpegviddec_get_property;
/**
* GstFFMpegVidDec:std-compliance:
*
* Specifies standard compliance mode to use
*
* Since: 1.22
*/
g_object_class_install_property (gobject_class, PROP_STD_COMPLIANCE,
g_param_spec_enum ("std-compliance", "Standard Compliance",
"Standard compliance mode to use", GST_TYPE_AV_CODEC_COMPLIANCE,
DEFAULT_STD_COMPLIANCE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_ffmpegviddec_subclass_init (GstFFMpegVidDecClass * klass,
gconstpointer class_data)
{
GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstPadTemplate *sinktempl, *srctempl;
GstCaps *sinkcaps, *srccaps;
AVCodec *in_plugin;
const AVCodec *in_plugin;
gchar *longname, *description;
int caps;
in_plugin =
(AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
GST_FFDEC_PARAMS_QDATA);
in_plugin = class_data;
g_assert (in_plugin != NULL);
/* construct the element details struct */
@ -239,16 +260,6 @@ gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
gst_caps_unref (srccaps);
klass->in_plugin = in_plugin;
}
static void
gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
int caps;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_ffmpegviddec_finalize;
@ -295,18 +306,6 @@ gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
DEFAULT_THREAD_TYPE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/**
* GstFFMpegVidDec::std-compliance:
*
* Specifies standard compliance mode to use
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_STD_COMPLIANCE,
g_param_spec_enum ("std-compliance", "Standard Compliance",
"Standard compliance mode to use", GST_TYPE_AV_CODEC_COMPLIANCE,
DEFAULT_STD_COMPLIANCE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
viddec_class->set_format = gst_ffmpegviddec_set_format;
viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
viddec_class->start = gst_ffmpegviddec_start;
@ -323,10 +322,16 @@ gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
gst_type_mark_as_plugin_api (GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0);
gst_type_mark_as_plugin_api (GST_FFMPEGVIDDEC_TYPE_THREAD_TYPE, 0);
gst_type_mark_as_plugin_api (GST_TYPE_AV_CODEC_COMPLIANCE, 0);
gst_type_mark_as_plugin_api (GST_TYPE_FFMPEGVIDDEC, 0);
}
static void
gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
{
}
static void
gst_ffmpegviddec_subinit (GstFFMpegVidDec * ffmpegdec)
{
GstFFMpegVidDecClass *klass =
(GstFFMpegVidDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);
@ -352,7 +357,7 @@ gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
static void
gst_ffmpegviddec_finalize (GObject * object)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
av_frame_free (&ffmpegdec->picture);
avcodec_free_context (&ffmpegdec->context);
@ -391,7 +396,7 @@ gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
GstFFMpegVidDecClass *oclass;
guint i;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
@ -425,7 +430,7 @@ gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
GstFFMpegVidDecClass *oclass;
guint i;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
goto could_not_open;
@ -510,8 +515,8 @@ gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
gboolean is_live;
GstQuery *query;
ffmpegdec = (GstFFMpegVidDec *) decoder;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
ffmpegdec = GST_FFMPEGVIDDEC (decoder);
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
@ -889,7 +894,7 @@ gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec * ffmpegdec)
if (!ffmpegdec->direct_rendering)
return FALSE;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
return ((oclass->in_plugin->capabilities & AV_CODEC_CAP_DR1) ==
AV_CODEC_CAP_DR1);
}
@ -907,7 +912,7 @@ gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
GstFlowReturn ret;
int create_buffer_flags = 0;
ffmpegdec = (GstFFMpegVidDec *) context->opaque;
ffmpegdec = GST_FFMPEGVIDDEC (context->opaque);
GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
@ -2014,7 +2019,7 @@ no_codec:
static GstFlowReturn
gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GstFlowReturn ret = GST_FLOW_OK;
gboolean got_frame = FALSE;
@ -2049,7 +2054,7 @@ static GstFlowReturn
gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
guint8 *data;
gint size;
gboolean got_frame;
@ -2156,10 +2161,10 @@ send_packet_failed:
static gboolean
gst_ffmpegviddec_start (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GstFFMpegVidDecClass *oclass;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
GST_OBJECT_LOCK (ffmpegdec);
avcodec_free_context (&ffmpegdec->context);
@ -2178,7 +2183,7 @@ gst_ffmpegviddec_start (GstVideoDecoder * decoder)
static gboolean
gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GST_OBJECT_LOCK (ffmpegdec);
gst_ffmpegviddec_close (ffmpegdec, FALSE);
@ -2233,7 +2238,7 @@ gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
static gboolean
gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
if (ffmpegdec->opened) {
GST_LOG_OBJECT (decoder, "flushing buffers");
@ -2246,7 +2251,7 @@ gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
static gboolean
gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GstVideoCodecState *state;
GstBufferPool *pool;
guint size, min, max;
@ -2418,7 +2423,7 @@ static void
gst_ffmpegviddec_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
switch (prop_id) {
case PROP_LOWRES:
@ -2458,7 +2463,7 @@ static void
gst_ffmpegviddec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
switch (prop_id) {
case PROP_LOWRES:
@ -2498,14 +2503,14 @@ gst_ffmpegviddec_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstFFMpegVidDecClass),
(GBaseInitFunc) gst_ffmpegviddec_base_init,
NULL,
(GClassInitFunc) gst_ffmpegviddec_class_init,
NULL,
(GClassInitFunc) gst_ffmpegviddec_subclass_init,
NULL,
NULL,
sizeof (GstFFMpegVidDec),
0,
(GInstanceInitFunc) gst_ffmpegviddec_init,
(GInstanceInitFunc) gst_ffmpegviddec_subinit,
};
GType type;
AVCodec *in_plugin;
@ -2634,10 +2639,10 @@ gst_ffmpegviddec_register (GstPlugin * plugin)
if (!type) {
/* create the gtype now */
typeinfo.class_data = in_plugin;
type =
g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
g_type_register_static (GST_TYPE_FFMPEGVIDDEC, type_name, &typeinfo,
0);
g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
}
/* (Ronald) MPEG-4 gets a higher priority because it has been well-

19
subprojects/gst-libav/ext/libav/gstavviddec.h
View file

@ -25,7 +25,22 @@
G_BEGIN_DECLS
#define GST_TYPE_FFMPEGVIDDEC (gst_ffmpegviddec_get_type())
#define GST_FFMPEGVIDDEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGVIDDEC,GstFFMpegVidDec))
#define GST_FFMPEGVIDDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGVIDDEC,GstFFMpegVidDecClass))
#define GST_FFMPEGVIDDEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_FFMPEGVIDDEC, GstFFMpegVidDecClass))
#define GST_IS_FFMPEGVIDDEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGVIDDEC))
#define GST_IS_FFMPEGVIDDEC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGVIDDEC))
/**
* GstFFMpegVidDec:
*
* The #GstFFMpegVidDec data structure.
*
* Since: 1.22
*/
typedef struct _GstFFMpegVidDec GstFFMpegVidDec;
struct _GstFFMpegVidDec
{
GstVideoDecoder parent;
@ -87,9 +102,11 @@ struct _GstFFMpegVidDecClass
{
GstVideoDecoderClass parent_class;
AVCodec *in_plugin;
const AVCodec *in_plugin;
};
GType gst_ffmpegviddec_get_type (void);
G_END_DECLS
#endif