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y4menc: port y4menc to use GstVideoEncoder base class
https://bugzilla.gnome.org/show_bug.cgi?id=735085
This commit is contained in:
Ravi Kiran K N
Thiago Santos
parent
d8a4435fd8
commit
5480f6d2dd
2 changed files with 62 additions and 93 deletions
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@ -76,53 +76,44 @@ GST_STATIC_PAD_TEMPLATE ("sink",
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static void gst_y4m_encode_reset (GstY4mEncode * filter);
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static gboolean gst_y4m_encode_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstFlowReturn gst_y4m_encode_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buf);
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static GstStateChangeReturn gst_y4m_encode_change_state (GstElement * element,
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GstStateChange transition);
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static GstFlowReturn
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gst_y4m_encode_handle_frame (GstVideoEncoder * encoder,
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GstVideoCodecFrame * frame);
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static gboolean gst_y4m_encode_set_format (GstVideoEncoder * encoder,
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GstVideoCodecState * state);
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#define gst_y4m_encode_parent_class parent_class
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G_DEFINE_TYPE (GstY4mEncode, gst_y4m_encode, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE (GstY4mEncode, gst_y4m_encode, GST_TYPE_VIDEO_ENCODER);
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static void
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gst_y4m_encode_class_init (GstY4mEncodeClass * klass)
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{
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GstElementClass *gstelement_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstVideoEncoderClass *venc_class = GST_VIDEO_ENCODER_CLASS (klass);
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gstelement_class = (GstElementClass *) klass;
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state);
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state);
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gst_element_class_add_pad_template (gstelement_class,
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&y4mencode_src_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&y4mencode_sink_factory));
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gst_element_class_set_static_metadata (gstelement_class,
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gst_element_class_set_static_metadata (element_class,
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"YUV4MPEG video encoder", "Codec/Encoder/Video",
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"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
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"Wim Taymans <wim.taymans@gmail.com>");
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venc_class->set_format = gst_y4m_encode_set_format;
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venc_class->handle_frame = gst_y4m_encode_handle_frame;
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}
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static void
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gst_y4m_encode_init (GstY4mEncode * filter)
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{
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filter->sinkpad =
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gst_pad_new_from_static_template (&y4mencode_sink_factory, "sink");
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_pad_set_chain_function (filter->sinkpad,
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GST_DEBUG_FUNCPTR (gst_y4m_encode_chain));
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gst_pad_set_event_function (filter->sinkpad,
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GST_DEBUG_FUNCPTR (gst_y4m_encode_sink_event));
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filter->srcpad =
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gst_pad_new_from_static_template (&y4mencode_src_factory, "src");
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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gst_pad_use_fixed_caps (filter->srcpad);
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/* init properties */
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gst_y4m_encode_reset (filter);
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}
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@ -130,76 +121,52 @@ gst_y4m_encode_init (GstY4mEncode * filter)
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static void
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gst_y4m_encode_reset (GstY4mEncode * filter)
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{
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filter->negotiated = FALSE;
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filter->header = FALSE;
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}
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static gboolean
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gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps)
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gst_y4m_encode_set_format (GstVideoEncoder * encoder,
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GstVideoCodecState * state)
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{
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gboolean ret;
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GstY4mEncode *filter;
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GstVideoInfo info;
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GstY4mEncode *y4menc;
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GstVideoInfo *info;
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GstVideoCodecState *output_state;
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filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad));
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y4menc = GST_Y4M_ENCODE (encoder);
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info = &state->info;
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if (!gst_video_info_from_caps (&info, vscaps))
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goto invalid_format;
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switch (GST_VIDEO_INFO_FORMAT (&info)) {
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switch (GST_VIDEO_INFO_FORMAT (info)) {
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case GST_VIDEO_FORMAT_I420:
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filter->colorspace = "420";
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y4menc->colorspace = "420";
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break;
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case GST_VIDEO_FORMAT_Y42B:
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filter->colorspace = "422";
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y4menc->colorspace = "422";
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break;
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case GST_VIDEO_FORMAT_Y41B:
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filter->colorspace = "411";
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y4menc->colorspace = "411";
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break;
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case GST_VIDEO_FORMAT_Y444:
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filter->colorspace = "444";
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y4menc->colorspace = "444";
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break;
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default:
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goto invalid_format;
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}
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filter->info = info;
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y4menc->info = *info;
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/* the template caps will do for the src pad, should always accept */
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ret = gst_pad_set_caps (filter->srcpad,
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gst_static_pad_template_get_caps (&y4mencode_src_factory));
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output_state =
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gst_video_encoder_set_output_state (encoder,
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gst_static_pad_template_get_caps (&y4mencode_src_factory), state);
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gst_video_codec_state_unref (output_state);
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filter->negotiated = ret;
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return TRUE;
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return ret;
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/* ERRORS */
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invalid_format:
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{
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GST_ERROR_OBJECT (filter, "got invalid caps");
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GST_ERROR_OBJECT (y4menc, "Invalid format");
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return FALSE;
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}
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}
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static gboolean
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gst_y4m_encode_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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gboolean res;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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res = gst_y4m_encode_setcaps (pad, caps);
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gst_event_unref (event);
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break;
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}
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default:
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res = gst_pad_event_default (pad, parent, event);
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break;
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}
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return res;
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}
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static inline GstBuffer *
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@ -252,47 +219,52 @@ gst_y4m_encode_get_frame_header (GstY4mEncode * filter)
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return buf;
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}
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static GstFlowReturn
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gst_y4m_encode_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
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gst_y4m_encode_handle_frame (GstVideoEncoder * encoder,
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GstVideoCodecFrame * frame)
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{
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GstY4mEncode *filter = GST_Y4M_ENCODE (parent);
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GstBuffer *outbuf;
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GstY4mEncode *filter = GST_Y4M_ENCODE (encoder);
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GstClockTime timestamp;
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/* check we got some decent info from caps */
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if (GST_VIDEO_INFO_FORMAT (&filter->info) == GST_VIDEO_FORMAT_UNKNOWN)
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goto not_negotiated;
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timestamp = GST_BUFFER_TIMESTAMP (buf);
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timestamp = GST_BUFFER_TIMESTAMP (frame->input_buffer);
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if (G_UNLIKELY (!filter->header)) {
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gboolean tff = FALSE;
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if (GST_VIDEO_INFO_IS_INTERLACED (&filter->info)) {
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tff = GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_FLAG_TFF);
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tff =
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GST_BUFFER_FLAG_IS_SET (frame->input_buffer,
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GST_VIDEO_BUFFER_FLAG_TFF);
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}
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outbuf = gst_y4m_encode_get_stream_header (filter, tff);
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frame->output_buffer = gst_y4m_encode_get_stream_header (filter, tff);
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filter->header = TRUE;
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outbuf =
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gst_buffer_append (outbuf, gst_y4m_encode_get_frame_header (filter));
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frame->output_buffer =
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gst_buffer_append (frame->output_buffer,
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gst_y4m_encode_get_frame_header (filter));
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} else {
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outbuf = gst_y4m_encode_get_frame_header (filter);
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frame->output_buffer = gst_y4m_encode_get_frame_header (filter);
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}
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/* join with data, FIXME, strides are all wrong etc */
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outbuf = gst_buffer_append (outbuf, buf);
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frame->output_buffer =
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gst_buffer_append (frame->output_buffer,
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gst_buffer_copy (frame->input_buffer));
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/* decorate */
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outbuf = gst_buffer_make_writable (outbuf);
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frame->output_buffer = gst_buffer_make_writable (frame->output_buffer);
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GST_BUFFER_TIMESTAMP (frame->output_buffer) = timestamp;
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GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
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return gst_video_encoder_finish_frame (encoder, frame);
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return gst_pad_push (filter->srcpad, outbuf);
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/* ERRORS */
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not_negotiated:
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{
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GST_ELEMENT_ERROR (filter, CORE, NEGOTIATION, (NULL),
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("format wasn't negotiated before chain function"));
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gst_buffer_unref (buf);
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("format wasn't negotiated"));
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return GST_FLOW_NOT_NEGOTIATED;
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}
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}
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@ -43,13 +43,10 @@ typedef struct _GstY4mEncode GstY4mEncode;
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typedef struct _GstY4mEncodeClass GstY4mEncodeClass;
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struct _GstY4mEncode {
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GstElement element;
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GstPad *sinkpad,*srcpad;
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GstVideoEncoder parent;
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/* caps information */
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GstVideoInfo info;
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gboolean negotiated;
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const gchar *colorspace;
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/* state information */
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@ -57,7 +54,7 @@ struct _GstY4mEncode {
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};
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struct _GstY4mEncodeClass {
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GstElementClass parent_class;
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GstVideoEncoderClass parent_class;
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};
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GType gst_y4m_encode_get_type(void);
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