[PATCH v2 1/6] winegstreamer: Support MPEG-1 audio in wg_transform.

[Anton Baskanov]

Signed-off-by: Anton Baskanov <baskanov at gmail.com>
---
v2:
* Added "parsed" field to MPEG-1 audio caps.
* Allow mpg123audiodec to be used.
* Use WG_MAJOR_TYPE_AUDIO instead of WG_MAJOR_TYPE_MPEG1_AUDIO.
---
 dlls/winegstreamer/wg_format.c    | 29 +++++++++++++++++++++++++++++
 dlls/winegstreamer/wg_transform.c | 13 +++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/dlls/winegstreamer/wg_format.c b/dlls/winegstreamer/wg_format.c
index ff9238a6a69..038ec956a42 100644
--- a/dlls/winegstreamer/wg_format.c
+++ b/dlls/winegstreamer/wg_format.c
@@ -338,12 +338,41 @@ static void wg_channel_mask_to_gst(GstAudioChannelPosition *positions, uint32_t
     }
 }
 
+static GstCaps *wg_format_to_caps_mpeg1_audio(const struct wg_format *format)
+{
+    GstCaps *caps;
+    int layer;
+
+    if (format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER1)
+        layer = 1;
+    else if (format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER2)
+        layer = 2;
+    else if (format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER3)
+        layer = 3;
+
+    if (!(caps = gst_caps_new_empty_simple("audio/mpeg")))
+        return NULL;
+
+    gst_caps_set_simple(caps, "mpegversion", G_TYPE_INT, 1, NULL);
+    gst_caps_set_simple(caps, "layer", G_TYPE_INT, layer, NULL);
+    gst_caps_set_simple(caps, "rate", G_TYPE_INT, format->u.audio.rate, NULL);
+    gst_caps_set_simple(caps, "channels", G_TYPE_INT, format->u.audio.channels, NULL);
+    gst_caps_set_simple(caps, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
+
+    return caps;
+}
+
 static GstCaps *wg_format_to_caps_audio(const struct wg_format *format)
 {
     GstAudioChannelPosition positions[32];
     GstAudioFormat audio_format;
     GstAudioInfo info;
 
+    if (format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER1
+            || format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER2
+            || format->u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER3)
+        return wg_format_to_caps_mpeg1_audio(format);
+
     if ((audio_format = wg_audio_format_to_gst(format->u.audio.format)) == GST_AUDIO_FORMAT_UNKNOWN)
         return NULL;
 
diff --git a/dlls/winegstreamer/wg_transform.c b/dlls/winegstreamer/wg_transform.c
index 49c7bfaa927..d8fe896f31e 100644
--- a/dlls/winegstreamer/wg_transform.c
+++ b/dlls/winegstreamer/wg_transform.c
@@ -234,6 +234,19 @@ NTSTATUS wg_transform_create(void *args)
             break;
 
         case WG_MAJOR_TYPE_AUDIO:
+            if (input_format.u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER1
+                    || input_format.u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER2
+                    || input_format.u.audio.format == WG_AUDIO_FORMAT_MPEG1_LAYER3)
+            {
+                if (!(element = transform_find_element(GST_ELEMENT_FACTORY_TYPE_DECODER, src_caps, raw_caps))
+                        || !transform_append_element(transform, element, &first, &last))
+                {
+                    gst_caps_unref(raw_caps);
+                    goto out;
+                }
+                break;
+            }
+            /* fallthrough */
         case WG_MAJOR_TYPE_VIDEO:
         case WG_MAJOR_TYPE_UNKNOWN:
             GST_FIXME("Format %u not implemented!", input_format.major_type);
-- 
2.34.1