+static GstCaps *
+caps_append (GstCaps * caps, GstStructure * in_s, guint x, guint y, guint mpi)
+{
+ GstStructure *s;
+
+ if (!in_s)
+ return caps;
+
+ if (mpi < 1 || mpi > 32)
+ return caps;
+
+ s = gst_structure_copy (in_s);
+
+ gst_structure_set (s,
+ "width", GST_TYPE_INT_RANGE, 1, x,
+ "height", GST_TYPE_INT_RANGE, 1, y,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001 * mpi, NULL);
+
+ caps = gst_caps_merge_structure (caps, s);
+
+ return caps;
+}
+
+
+static GstCaps *
+gst_rtp_h263p_pay_sink_getcaps (GstRTPBasePayload * payload, GstPad * pad,
+ GstCaps * filter)
+{
+ GstRtpH263PPay *rtph263ppay;
+ GstCaps *caps = NULL, *templ;
+ GstCaps *peercaps = NULL;
+ GstCaps *intersect = NULL;
+ guint i;
+
+ rtph263ppay = GST_RTP_H263P_PAY (payload);
+
+ peercaps =
+ gst_pad_peer_query_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), NULL);
+
+ /* if we're just outputting to udpsink or fakesink or so, we should also
+ * accept any input compatible with our sink template caps */
+ if (!peercaps || gst_caps_is_any (peercaps)) {
+ if (peercaps)
+ gst_caps_unref (peercaps);
+ caps =
+ gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SINKPAD (payload));
+ goto done;
+ }
+
+ /* We basically need to differentiate two use-cases here: One where there's
+ * a capsfilter after the payloader with caps created from an SDP; in this
+ * case the filter caps are fixed and we want to signal to an encoder what
+ * we want it to produce. The second case is simply payloader ! depayloader
+ * where we are dealing with the depayloader's template caps. In this case
+ * we should accept any input compatible with our sink template caps. */
+ if (!gst_caps_is_fixed (peercaps)) {
+ gst_caps_unref (peercaps);
+ caps =
+ gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SINKPAD (payload));
+ goto done;
+ }
+
+ templ = gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload));
+ intersect = gst_caps_intersect (peercaps, templ);
+ gst_caps_unref (peercaps);
+ gst_caps_unref (templ);
+
+ if (gst_caps_is_empty (intersect))
+ return intersect;
+
+ caps = gst_caps_new_empty ();
+ for (i = 0; i < gst_caps_get_size (intersect); i++) {
+ GstStructure *s = gst_caps_get_structure (intersect, i);
+ const gchar *encoding_name = gst_structure_get_string (s, "encoding-name");
+
+ if (!strcmp (encoding_name, "H263-2000")) {
+ const gchar *profile_str = gst_structure_get_string (s, "profile");
+ const gchar *level_str = gst_structure_get_string (s, "level");
+ int profile = 0;
+ int level = 0;
+
+ if (profile_str && level_str) {
+ gboolean i = FALSE, j = FALSE, l = FALSE, t = FALSE, f = FALSE,
+ v = FALSE;
+ GstStructure *new_s = gst_structure_new ("video/x-h263",
+ "variant", G_TYPE_STRING, "itu",
+ NULL);
+
+ profile = atoi (profile_str);
+ level = atoi (level_str);
+
+ /* These profiles are defined in the H.263 Annex X */
+ switch (profile) {
+ case 0:
+ /* The Baseline Profile (Profile 0) */
+ break;
+ case 1:
+ /* H.320 Coding Efficiency Version 2 Backward-Compatibility Profile
+ * (Profile 1)
+ * Baseline + Annexes I, J, L.4 and T
+ */
+ i = j = l = t = TRUE;
+ break;
+ case 2:
+ /* Version 1 Backward-Compatibility Profile (Profile 2)
+ * Baseline + Annex F
+ */
+ i = j = l = t = f = TRUE;
+ break;
+ case 3:
+ /* Version 2 Interactive and Streaming Wireless Profile
+ * Baseline + Annexes I, J, T
+ */
+ i = j = t = TRUE;
+ break;
+ case 4:
+ /* Version 3 Interactive and Streaming Wireless Profile (Profile 4)
+ * Baseline + Annexes I, J, T, V, W.6.3.8,
+ */
+ /* Missing W.6.3.8 */
+ i = j = t = v = TRUE;
+ break;
+ case 5:
+ /* Conversational High Compression Profile (Profile 5)
+ * Baseline + Annexes F, I, J, L.4, T, D, U
+ */
+ /* Missing D, U */
+ f = i = j = l = t = TRUE;
+ break;
+ case 6:
+ /* Conversational Internet Profile (Profile 6)
+ * Baseline + Annexes F, I, J, L.4, T, D, U and
+ * K with arbitratry slice ordering
+ */
+ /* Missing D, U, K with arbitratry slice ordering */
+ f = i = j = l = t = TRUE;
+ break;
+ case 7:
+ /* Conversational Interlace Profile (Profile 7)
+ * Baseline + Annexes F, I, J, L.4, T, D, U, W.6.3.11
+ */
+ /* Missing D, U, W.6.3.11 */
+ f = i = j = l = t = TRUE;
+ break;
+ case 8:
+ /* High Latency Profile (Profile 8)
+ * Baseline + Annexes F, I, J, L.4, T, D, U, P.5, O.1.1 and
+ * K with arbitratry slice ordering
+ */
+ /* Missing D, U, P.5, O.1.1 */
+ f = i = j = l = t = TRUE;
+ break;
+ }
+
+
+ if (f || i || j || t || l || v) {
+ GValue list = { 0 };
+ GValue vstr = { 0 };
+
+ g_value_init (&list, GST_TYPE_LIST);
+ g_value_init (&vstr, G_TYPE_STRING);
+
+ g_value_set_static_string (&vstr, "h263");
+ gst_value_list_append_value (&list, &vstr);
+ g_value_set_static_string (&vstr, "h263p");
+ gst_value_list_append_value (&list, &vstr);
+
+ if (l || v) {
+ g_value_set_static_string (&vstr, "h263pp");
+ gst_value_list_append_value (&list, &vstr);
+ }
+ g_value_unset (&vstr);
+
+ gst_structure_set_value (new_s, "h263version", &list);
+ g_value_unset (&list);
+ } else {
+ gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL);
+ }
+
+
+ if (!f)
+ gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!i)
+ gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!j)
+ gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!t)
+ gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!l)
+ gst_structure_set (new_s, "annex-l", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!v)
+ gst_structure_set (new_s, "annex-v", G_TYPE_BOOLEAN, FALSE, NULL);
+
+
+ if (level <= 10 || level == 45) {
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 176,
+ "height", GST_TYPE_INT_RANGE, 1, 144,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+ } else if (level <= 20) {
+ GstStructure *s_copy = gst_structure_copy (new_s);
+
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 352,
+ "height", GST_TYPE_INT_RANGE, 1, 288,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+
+ gst_structure_set (s_copy,
+ "width", GST_TYPE_INT_RANGE, 1, 176,
+ "height", GST_TYPE_INT_RANGE, 1, 144,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL);
+ caps = gst_caps_merge_structure (caps, s_copy);
+ } else if (level <= 40) {
+
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 352,
+ "height", GST_TYPE_INT_RANGE, 1, 288,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+ } else if (level <= 50) {
+ GstStructure *s_copy = gst_structure_copy (new_s);
+
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 352,
+ "height", GST_TYPE_INT_RANGE, 1, 288,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+
+ gst_structure_set (s_copy,
+ "width", GST_TYPE_INT_RANGE, 1, 352,
+ "height", GST_TYPE_INT_RANGE, 1, 240,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
+ caps = gst_caps_merge_structure (caps, s_copy);
+ } else if (level <= 60) {
+ GstStructure *s_copy = gst_structure_copy (new_s);
+
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 720,
+ "height", GST_TYPE_INT_RANGE, 1, 288,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+
+ gst_structure_set (s_copy,
+ "width", GST_TYPE_INT_RANGE, 1, 720,
+ "height", GST_TYPE_INT_RANGE, 1, 240,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
+ caps = gst_caps_merge_structure (caps, s_copy);
+ } else if (level <= 70) {
+ GstStructure *s_copy = gst_structure_copy (new_s);
+
+ gst_structure_set (new_s,
+ "width", GST_TYPE_INT_RANGE, 1, 720,
+ "height", GST_TYPE_INT_RANGE, 1, 576,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
+ caps = gst_caps_merge_structure (caps, new_s);
+
+ gst_structure_set (s_copy,
+ "width", GST_TYPE_INT_RANGE, 1, 720,
+ "height", GST_TYPE_INT_RANGE, 1, 480,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
+ caps = gst_caps_merge_structure (caps, s_copy);
+ } else {
+ caps = gst_caps_merge_structure (caps, new_s);
+ }
+
+ } else {
+ GstStructure *new_s = gst_structure_new ("video/x-h263",
+ "variant", G_TYPE_STRING, "itu",
+ "h263version", G_TYPE_STRING, "h263",
+ NULL);
+
+ GST_DEBUG_OBJECT (rtph263ppay, "No profile or level specified"
+ " for H263-2000, defaulting to baseline H263");
+
+ caps = gst_caps_merge_structure (caps, new_s);
+ }
+ } else {
+ gboolean f = FALSE, i = FALSE, j = FALSE, t = FALSE;
+ /* FIXME: ffmpeg support the Appendix K too, how do we express it ?
+ * guint k;
+ */
+ const gchar *str;
+ GstStructure *new_s = gst_structure_new ("video/x-h263",
+ "variant", G_TYPE_STRING, "itu",
+ NULL);
+ gboolean added = FALSE;
+
+ str = gst_structure_get_string (s, "f");
+ if (str && !strcmp (str, "1"))
+ f = TRUE;
+
+ str = gst_structure_get_string (s, "i");
+ if (str && !strcmp (str, "1"))
+ i = TRUE;
+
+ str = gst_structure_get_string (s, "j");
+ if (str && !strcmp (str, "1"))
+ j = TRUE;
+
+ str = gst_structure_get_string (s, "t");
+ if (str && !strcmp (str, "1"))
+ t = TRUE;
+
+ if (f || i || j || t) {
+ GValue list = { 0 };
+ GValue vstr = { 0 };
+
+ g_value_init (&list, GST_TYPE_LIST);
+ g_value_init (&vstr, G_TYPE_STRING);
+
+ g_value_set_static_string (&vstr, "h263");
+ gst_value_list_append_value (&list, &vstr);
+ g_value_set_static_string (&vstr, "h263p");
+ gst_value_list_append_value (&list, &vstr);
+ g_value_unset (&vstr);
+
+ gst_structure_set_value (new_s, "h263version", &list);
+ g_value_unset (&list);
+ } else {
+ gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL);
+ }
+
+ if (!f)
+ gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!i)
+ gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!j)
+ gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL);
+ if (!t)
+ gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL);
+
+
+ str = gst_structure_get_string (s, "custom");
+ if (str) {
+ unsigned int xmax, ymax, mpi;
+ if (sscanf (str, "%u,%u,%u", &xmax, &ymax, &mpi) == 3) {
+ if (xmax % 4 && ymax % 4 && mpi >= 1 && mpi <= 32) {
+ caps = caps_append (caps, new_s, xmax, ymax, mpi);
+ added = TRUE;
+ } else {
+ GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI"
+ " %u x %u at %u, ignoring", xmax, ymax, mpi);
+ }
+ } else {
+ GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI: %s,"
+ " ignoring", str);
+ }
+ }
+
+ str = gst_structure_get_string (s, "16cif");
+ if (str) {
+ int mpi = atoi (str);
+ caps = caps_append (caps, new_s, 1408, 1152, mpi);
+ added = TRUE;
+ }
+
+ str = gst_structure_get_string (s, "4cif");
+ if (str) {
+ int mpi = atoi (str);
+ caps = caps_append (caps, new_s, 704, 576, mpi);
+ added = TRUE;
+ }
+
+ str = gst_structure_get_string (s, "cif");
+ if (str) {
+ int mpi = atoi (str);
+ caps = caps_append (caps, new_s, 352, 288, mpi);
+ added = TRUE;
+ }
+
+ str = gst_structure_get_string (s, "qcif");
+ if (str) {
+ int mpi = atoi (str);
+ caps = caps_append (caps, new_s, 176, 144, mpi);
+ added = TRUE;
+ }
+
+ str = gst_structure_get_string (s, "sqcif");
+ if (str) {
+ int mpi = atoi (str);
+ caps = caps_append (caps, new_s, 128, 96, mpi);
+ added = TRUE;
+ }
+
+ if (added)
+ gst_structure_free (new_s);
+ else
+ caps = gst_caps_merge_structure (caps, new_s);
+ }
+ }
+
+ gst_caps_unref (intersect);
+
+done:
+
+ if (filter) {
+ GstCaps *tmp;
+
+ GST_DEBUG_OBJECT (payload, "Intersect %" GST_PTR_FORMAT " and filter %"
+ GST_PTR_FORMAT, caps, filter);
+ tmp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
+ gst_caps_unref (caps);
+ caps = tmp;
+ }
+
+ return caps;
+}
+
+