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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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y4m: port some more
Use video helpers.
This commit is contained in:
Wim Taymans
parent
924012111f
commit
bee50961e4
2 changed files with 59 additions and 77 deletions
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@ -138,79 +138,54 @@ 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->width = filter->height = -1;
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filter->fps_num = filter->fps_den = 1;
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filter->par_num = filter->par_den = 1;
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filter->colorspace = "unknown";
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filter->negotiated = 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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{
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gboolean ret;
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GstY4mEncode *filter;
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GstStructure *structure;
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gboolean res;
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gint w, h;
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guint32 fourcc;
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const GValue *fps, *par, *interlaced;
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GstVideoInfo info;
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filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad));
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structure = gst_caps_get_structure (vscaps, 0);
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if (!gst_video_info_from_caps (&info, vscaps))
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goto invalid_format;
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res = gst_structure_get_int (structure, "width", &w);
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res &= gst_structure_get_int (structure, "height", &h);
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res &= ((fps = gst_structure_get_value (structure, "framerate")) != NULL);
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res &= gst_structure_get_fourcc (structure, "format", &fourcc);
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filter->info = info;
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switch (fourcc) { /* Translate fourcc to Y4M colorspace code */
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case GST_MAKE_FOURCC ('I', '4', '2', '0'):
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case GST_MAKE_FOURCC ('I', 'Y', 'U', 'V'):
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switch (GST_VIDEO_INFO_FORMAT (&filter->info)) {
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case GST_VIDEO_FORMAT_I420:
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filter->colorspace = "420";
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break;
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case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
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case GST_VIDEO_FORMAT_Y42B:
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filter->colorspace = "422";
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break;
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case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
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case GST_VIDEO_FORMAT_Y41B:
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filter->colorspace = "411";
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break;
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case GST_MAKE_FOURCC ('Y', '4', '4', '4'):
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case GST_VIDEO_FORMAT_Y444:
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filter->colorspace = "444";
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break;
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default:
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res = FALSE;
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break;
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goto invalid_format;
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}
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if (!res || w <= 0 || h <= 0 || !GST_VALUE_HOLDS_FRACTION (fps))
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return FALSE;
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/* optional interlaced info */
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interlaced = gst_structure_get_value (structure, "interlaced");
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/* optional par info */
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par = gst_structure_get_value (structure, "pixel-aspect-ratio");
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filter->width = w;
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filter->height = h;
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filter->fps_num = gst_value_get_fraction_numerator (fps);
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filter->fps_den = gst_value_get_fraction_denominator (fps);
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if ((par != NULL) && GST_VALUE_HOLDS_FRACTION (par)) {
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filter->par_num = gst_value_get_fraction_numerator (par);
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filter->par_den = gst_value_get_fraction_denominator (par);
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} else { /* indicates unknown */
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filter->par_num = 0;
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filter->par_den = 0;
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}
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if ((interlaced != NULL) && G_VALUE_HOLDS (interlaced, G_TYPE_BOOLEAN)) {
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filter->interlaced = g_value_get_boolean (interlaced);
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} else {
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/* assume progressive if no interlaced property in caps */
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filter->interlaced = FALSE;
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}
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/* the template caps will do for the src pad, should always accept */
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return gst_pad_set_caps (filter->srcpad,
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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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filter->negotiated = ret;
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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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return FALSE;
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}
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}
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static gboolean
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@ -236,23 +211,29 @@ gst_y4m_encode_sink_event (GstPad * pad, GstEvent * event)
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}
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static inline GstBuffer *
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gst_y4m_encode_get_stream_header (GstY4mEncode * filter)
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gst_y4m_encode_get_stream_header (GstY4mEncode * filter, gboolean tff)
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{
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gpointer header;
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GstBuffer *buf;
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gchar interlaced;
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gsize len;
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interlaced = 'p';
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if (filter->interlaced && filter->top_field_first)
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interlaced = 't';
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else if (filter->interlaced)
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interlaced = 'b';
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if (filter->info.flags & GST_VIDEO_FLAG_INTERLACED) {
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if (tff)
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interlaced = 't';
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else
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interlaced = 'b';
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} else {
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interlaced = 'p';
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}
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header = g_strdup_printf ("YUV4MPEG2 C%s W%d H%d I%c F%d:%d A%d:%d\n",
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filter->colorspace, filter->width, filter->height, interlaced,
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filter->fps_num, filter->fps_den, filter->par_num, filter->par_den);
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filter->colorspace, GST_VIDEO_INFO_WIDTH (&filter->info),
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GST_VIDEO_INFO_HEIGHT (&filter->info), interlaced,
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GST_VIDEO_INFO_FPS_N (&filter->info),
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GST_VIDEO_INFO_FPS_D (&filter->info),
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GST_VIDEO_INFO_PAR_N (&filter->info),
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GST_VIDEO_INFO_PAR_D (&filter->info));
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len = strlen (header);
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buf = gst_buffer_new ();
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@ -287,30 +268,24 @@ gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf)
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GstClockTime timestamp;
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/* check we got some decent info from caps */
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if (filter->width < 0) {
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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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return GST_FLOW_NOT_NEGOTIATED;
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}
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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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if (G_UNLIKELY (!filter->header)) {
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if (filter->interlaced == TRUE) {
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if (GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_TFF)) {
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filter->top_field_first = TRUE;
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} else {
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filter->top_field_first = FALSE;
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}
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gboolean tff;
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if (filter->info.flags & GST_VIDEO_FLAG_INTERLACED) {
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tff = GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_TFF);
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}
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outbuf = gst_y4m_encode_get_stream_header (filter);
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outbuf = gst_y4m_encode_get_stream_header (filter, tff);
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filter->header = TRUE;
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outbuf = gst_buffer_join (outbuf, 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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}
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/* join with data */
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/* join with data, FIXME, strides are all wrong etc */
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outbuf = gst_buffer_join (outbuf, buf);
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/* decorate */
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outbuf = gst_buffer_make_writable (outbuf);
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@ -318,6 +293,15 @@ gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf)
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GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
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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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return GST_FLOW_NOT_NEGOTIATED;
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}
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}
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static void
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@ -48,11 +48,9 @@ struct _GstY4mEncode {
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GstPad *sinkpad,*srcpad;
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/* caps information */
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gint width, height;
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gint fps_num, fps_den;
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gint par_num, par_den;
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gboolean interlaced;
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gboolean top_field_first;
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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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gboolean header;
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