Commit 5480f6d2 authored by Ravi Kiran K N's avatar Ravi Kiran K N Committed by Thiago Santos

y4menc: port y4menc to use GstVideoEncoder base class

https://bugzilla.gnome.org/show_bug.cgi?id=735085
parent d8a4435f
......@@ -76,53 +76,44 @@ GST_STATIC_PAD_TEMPLATE ("sink",
static void gst_y4m_encode_reset (GstY4mEncode * filter);
static gboolean gst_y4m_encode_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static GstFlowReturn gst_y4m_encode_chain (GstPad * pad, GstObject * parent,
GstBuffer * buf);
static GstStateChangeReturn gst_y4m_encode_change_state (GstElement * element,
GstStateChange transition);
static GstFlowReturn
gst_y4m_encode_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame);
static gboolean gst_y4m_encode_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state);
#define gst_y4m_encode_parent_class parent_class
G_DEFINE_TYPE (GstY4mEncode, gst_y4m_encode, GST_TYPE_ELEMENT);
G_DEFINE_TYPE (GstY4mEncode, gst_y4m_encode, GST_TYPE_VIDEO_ENCODER);
static void
gst_y4m_encode_class_init (GstY4mEncodeClass * klass)
{
GstElementClass *gstelement_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoEncoderClass *venc_class = GST_VIDEO_ENCODER_CLASS (klass);
gstelement_class = (GstElementClass *) klass;
element_class->change_state = GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state);
gst_element_class_add_pad_template (gstelement_class,
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&y4mencode_src_factory));
gst_element_class_add_pad_template (gstelement_class,
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&y4mencode_sink_factory));
gst_element_class_set_static_metadata (gstelement_class,
gst_element_class_set_static_metadata (element_class,
"YUV4MPEG video encoder", "Codec/Encoder/Video",
"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
"Wim Taymans <wim.taymans@gmail.com>");
venc_class->set_format = gst_y4m_encode_set_format;
venc_class->handle_frame = gst_y4m_encode_handle_frame;
}
static void
gst_y4m_encode_init (GstY4mEncode * filter)
{
filter->sinkpad =
gst_pad_new_from_static_template (&y4mencode_sink_factory, "sink");
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_pad_set_chain_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_y4m_encode_chain));
gst_pad_set_event_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_y4m_encode_sink_event));
filter->srcpad =
gst_pad_new_from_static_template (&y4mencode_src_factory, "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
gst_pad_use_fixed_caps (filter->srcpad);
/* init properties */
gst_y4m_encode_reset (filter);
}
......@@ -130,76 +121,52 @@ gst_y4m_encode_init (GstY4mEncode * filter)
static void
gst_y4m_encode_reset (GstY4mEncode * filter)
{
filter->negotiated = FALSE;
filter->header = FALSE;
}
static gboolean
gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps)
gst_y4m_encode_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state)
{
gboolean ret;
GstY4mEncode *filter;
GstVideoInfo info;
GstY4mEncode *y4menc;
GstVideoInfo *info;
GstVideoCodecState *output_state;
filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad));
y4menc = GST_Y4M_ENCODE (encoder);
info = &state->info;
if (!gst_video_info_from_caps (&info, vscaps))
goto invalid_format;
switch (GST_VIDEO_INFO_FORMAT (&info)) {
switch (GST_VIDEO_INFO_FORMAT (info)) {
case GST_VIDEO_FORMAT_I420:
filter->colorspace = "420";
y4menc->colorspace = "420";
break;
case GST_VIDEO_FORMAT_Y42B:
filter->colorspace = "422";
y4menc->colorspace = "422";
break;
case GST_VIDEO_FORMAT_Y41B:
filter->colorspace = "411";
y4menc->colorspace = "411";
break;
case GST_VIDEO_FORMAT_Y444:
filter->colorspace = "444";
y4menc->colorspace = "444";
break;
default:
goto invalid_format;
}
filter->info = info;
/* the template caps will do for the src pad, should always accept */
ret = gst_pad_set_caps (filter->srcpad,
gst_static_pad_template_get_caps (&y4mencode_src_factory));
y4menc->info = *info;
filter->negotiated = ret;
output_state =
gst_video_encoder_set_output_state (encoder,
gst_static_pad_template_get_caps (&y4mencode_src_factory), state);
gst_video_codec_state_unref (output_state);
return ret;
return TRUE;
/* ERRORS */
invalid_format:
{
GST_ERROR_OBJECT (filter, "got invalid caps");
GST_ERROR_OBJECT (y4menc, "Invalid format");
return FALSE;
}
}
static gboolean
gst_y4m_encode_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
gboolean res;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
res = gst_y4m_encode_setcaps (pad, caps);
gst_event_unref (event);
break;
}
default:
res = gst_pad_event_default (pad, parent, event);
break;
}
return res;
}
static inline GstBuffer *
......@@ -252,47 +219,52 @@ gst_y4m_encode_get_frame_header (GstY4mEncode * filter)
return buf;
}
static GstFlowReturn
gst_y4m_encode_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
gst_y4m_encode_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame)
{
GstY4mEncode *filter = GST_Y4M_ENCODE (parent);
GstBuffer *outbuf;
GstY4mEncode *filter = GST_Y4M_ENCODE (encoder);
GstClockTime timestamp;
/* check we got some decent info from caps */
if (GST_VIDEO_INFO_FORMAT (&filter->info) == GST_VIDEO_FORMAT_UNKNOWN)
goto not_negotiated;
timestamp = GST_BUFFER_TIMESTAMP (buf);
timestamp = GST_BUFFER_TIMESTAMP (frame->input_buffer);
if (G_UNLIKELY (!filter->header)) {
gboolean tff = FALSE;
if (GST_VIDEO_INFO_IS_INTERLACED (&filter->info)) {
tff = GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_FLAG_TFF);
tff =
GST_BUFFER_FLAG_IS_SET (frame->input_buffer,
GST_VIDEO_BUFFER_FLAG_TFF);
}
outbuf = gst_y4m_encode_get_stream_header (filter, tff);
frame->output_buffer = gst_y4m_encode_get_stream_header (filter, tff);
filter->header = TRUE;
outbuf =
gst_buffer_append (outbuf, gst_y4m_encode_get_frame_header (filter));
frame->output_buffer =
gst_buffer_append (frame->output_buffer,
gst_y4m_encode_get_frame_header (filter));
} else {
outbuf = gst_y4m_encode_get_frame_header (filter);
frame->output_buffer = gst_y4m_encode_get_frame_header (filter);
}
/* join with data, FIXME, strides are all wrong etc */
outbuf = gst_buffer_append (outbuf, buf);
/* decorate */
outbuf = gst_buffer_make_writable (outbuf);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
frame->output_buffer =
gst_buffer_append (frame->output_buffer,
gst_buffer_copy (frame->input_buffer));
return gst_pad_push (filter->srcpad, outbuf);
/* decorate */
frame->output_buffer = gst_buffer_make_writable (frame->output_buffer);
GST_BUFFER_TIMESTAMP (frame->output_buffer) = timestamp;
return gst_video_encoder_finish_frame (encoder, frame);
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (filter, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before chain function"));
gst_buffer_unref (buf);
("format wasn't negotiated"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
......
......@@ -43,13 +43,10 @@ typedef struct _GstY4mEncode GstY4mEncode;
typedef struct _GstY4mEncodeClass GstY4mEncodeClass;
struct _GstY4mEncode {
GstElement element;
GstPad *sinkpad,*srcpad;
GstVideoEncoder parent;
/* caps information */
GstVideoInfo info;
gboolean negotiated;
const gchar *colorspace;
/* state information */
......@@ -57,7 +54,7 @@ struct _GstY4mEncode {
};
struct _GstY4mEncodeClass {
GstElementClass parent_class;
GstVideoEncoderClass parent_class;
};
GType gst_y4m_encode_get_type(void);
......
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