From 9724227c09a4a535adf4722b5d0e1c8e95c99105 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.com>
Date: Wed, 23 Oct 2024 14:22:37 +0100
Subject: [PATCH] avcodecmap: add mapping for Hap video codec

Decoder works, encoder needs more work.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7717>
---
 .../gst-libav/ext/libav/gstavcodecmap.c       | 20 +++++++++++++++++++
 subprojects/gst-libav/ext/libav/gstavvidenc.c |  8 +++++++-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/subprojects/gst-libav/ext/libav/gstavcodecmap.c b/subprojects/gst-libav/ext/libav/gstavcodecmap.c
index 87abdc6068..9f639fe706 100644
--- a/subprojects/gst-libav/ext/libav/gstavcodecmap.c
+++ b/subprojects/gst-libav/ext/libav/gstavcodecmap.c
@@ -1219,6 +1219,7 @@ gst_ffmpeg_codecid_is_known (enum AVCodecID codec_id)
     case AV_CODEC_ID_APTX_HD:
     case AV_CODEC_ID_AV1:
     case AV_CODEC_ID_M101:
+    case AV_CODEC_ID_HAP:
       return TRUE;
     default:
       return FALSE;
@@ -2892,6 +2893,11 @@ gst_ffmpeg_codecid_to_caps (enum AVCodecID codec_id,
           gst_ff_vid_caps_new (context, NULL, codec_id, encode, "video/x-m101",
           NULL);
       break;
+    case AV_CODEC_ID_HAP:
+      caps =
+          gst_ff_vid_caps_new (context, NULL, codec_id, encode, "video/x-hap",
+          NULL);
+      break;
     default:
       GST_DEBUG ("Unknown codec ID %d, please add mapping here", codec_id);
       break;
@@ -3971,6 +3977,20 @@ gst_ffmpeg_caps_with_codecid (enum AVCodecID codec_id,
       }
       break;
 
+    case AV_CODEC_ID_HAP:{
+      const gchar *variant;
+
+      if ((variant = gst_structure_get_string (str, "variant"))) {
+        if (strlen (variant) == 4) {
+          GST_INFO ("HAP video variant '%s'", variant);
+          context->codec_tag =
+              GST_MAKE_FOURCC (variant[0], variant[1], variant[2], variant[3]);
+        } else {
+          GST_ERROR ("Unexpected HAP video variant '%s'", variant);
+        }
+      }
+      break;
+    }
     case AV_CODEC_ID_MSRLE:
     case AV_CODEC_ID_QTRLE:
     case AV_CODEC_ID_TSCC:
diff --git a/subprojects/gst-libav/ext/libav/gstavvidenc.c b/subprojects/gst-libav/ext/libav/gstavvidenc.c
index 239929d415..2b2a04dcc9 100644
--- a/subprojects/gst-libav/ext/libav/gstavvidenc.c
+++ b/subprojects/gst-libav/ext/libav/gstavvidenc.c
@@ -1092,6 +1092,12 @@ gst_ffmpegvidenc_register (GstPlugin * plugin)
       continue;
     }
 
+    int rank = GST_RANK_SECONDARY;
+
+    if (!strcmp (in_plugin->name, "hap")) {
+      rank = GST_RANK_NONE;
+    }
+
     /* construct the type */
     type_name = g_strdup_printf ("avenc_%s", in_plugin->name);
 
@@ -1115,7 +1121,7 @@ gst_ffmpegvidenc_register (GstPlugin * plugin)
       }
     }
 
-    if (!gst_element_register (plugin, type_name, GST_RANK_SECONDARY, type)) {
+    if (!gst_element_register (plugin, type_name, rank, type)) {
       g_free (type_name);
       return FALSE;
     }