[Spice-devel] [PATCH spice-gtk 1/2] channel-display: keep one struct array for video-codecs data

Victor Toso victortoso at redhat.com
Mon Jul 10 15:52:06 UTC 2017


From: Victor Toso <me at victortoso.com>

On channel-display.c, for each SpiceVideoCodecType we need:
 - Its enum type;
 - The associated capability;
 - A name;

On channel-display-gst.c, for each SpiceVideoCodecType we need:
 - Associated decoding elements for the pipeline;
 - Associated GstCaps, also for the video pipeline;

Follow up patch will need the associated name for given
SpiceVideoCodecType.

Moving gst_opts[] array to channel-display-priv.h to be reused. This
should also make slightly simpler when supporting a new video codec in
the future.

Signed-off-by: Victor Toso <victortoso at redhat.com>
---
 src/channel-display-gst.c  | 36 ------------------------------------
 src/channel-display-priv.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 src/channel-display.c      | 18 ++++--------------
 3 files changed, 47 insertions(+), 50 deletions(-)

diff --git a/src/channel-display-gst.c b/src/channel-display-gst.c
index 8669562..acea4a2 100644
--- a/src/channel-display-gst.c
+++ b/src/channel-display-gst.c
@@ -50,42 +50,6 @@ typedef struct SpiceGstDecoder {
     guint timer_id;
 } SpiceGstDecoder;
 
-/* FIXME: With gstreamer version 1.9.0 and higher, we are using playbin to
- * create the pipeline for us and for that reason we don't need to keep track of
- * decoder's name anymore. */
-static struct {
-    const gchar *dec_name;
-    const gchar *dec_caps;
-} gst_opts[] = {
-    /* SpiceVideoCodecType starts at index 1 */
-    { NULL, NULL },
-
-    /* SPICE_VIDEO_CODEC_TYPE_MJPEG */
-    { "jpegdec", "image/jpeg" },
-
-    /* SPICE_VIDEO_CODEC_TYPE_VP8
-     *
-     * typefind is unable to identify VP8 streams by design.
-     * See: https://bugzilla.gnome.org/show_bug.cgi?id=756457
-     */
-    { "vp8dec", "video/x-vp8" },
-
-    /* SPICE_VIDEO_CODEC_TYPE_H264
-     * When setting video/x-h264, h264parse will complain if we don't have the
-     * stream-format or codec_data information. As stream-format is byte-stream
-     * (hardcoded in spice-server), let's add it here to avoid the warning.
-     */
-    { "h264parse ! avdec_h264", "video/x-h264,stream-format=byte-stream" },
-
-    /* SPICE_VIDEO_CODEC_TYPE_VP9 */
-    { "vp9dec", "video/x-vp9" },
-};
-
-G_STATIC_ASSERT(G_N_ELEMENTS(gst_opts) <= SPICE_VIDEO_CODEC_TYPE_ENUM_END);
-
-#define VALID_VIDEO_CODEC_TYPE(codec) \
-    (codec > 0 && codec < G_N_ELEMENTS(gst_opts))
-
 /* GstPlayFlags enum is in plugin's header which should not be exported.
  * https://bugzilla.gnome.org/show_bug.cgi?id=784279
  */
diff --git a/src/channel-display-priv.h b/src/channel-display-priv.h
index 3c9d119..00f71f8 100644
--- a/src/channel-display-priv.h
+++ b/src/channel-display-priv.h
@@ -150,6 +150,49 @@ struct display_stream {
     uint32_t report_drops_seq_len;
 };
 
+static const struct {
+    int cap;
+    const gchar name[8];
+
+    /* FIXME: With gstreamer version 1.9.0 and higher, we are using playbin to
+     * create the pipeline for us and for that reason we don't need to keep track of
+     * decoder's name anymore. */
+    const gchar *dec_name;
+    const gchar *dec_caps;
+} gst_opts[] = {
+    /* SpiceVideoCodecType starts at index 1 */
+    { 0 },
+
+    /* SPICE_VIDEO_CODEC_TYPE_MJPEG */
+    { SPICE_DISPLAY_CAP_CODEC_MJPEG, "mjpeg",
+      "jpegdec", "image/jpeg" },
+
+    /* SPICE_VIDEO_CODEC_TYPE_VP8
+     *
+     * typefind is unable to identify VP8 streams by design.
+     * See: https://bugzilla.gnome.org/show_bug.cgi?id=756457
+     */
+    { SPICE_DISPLAY_CAP_CODEC_VP8, "vp8",
+      "vp8dec", "video/x-vp8" },
+
+    /* SPICE_VIDEO_CODEC_TYPE_H264
+     * When setting video/x-h264, h264parse will complain if we don't have the
+     * stream-format or codec_data information. As stream-format is byte-stream
+     * (hardcoded in spice-server), let's add it here to avoid the warning.
+     */
+    { SPICE_DISPLAY_CAP_CODEC_H264, "h264",
+      "h264parse ! avdec_h264", "video/x-h264,stream-format=byte-stream" },
+
+    /* SPICE_VIDEO_CODEC_TYPE_VP9 */
+    { SPICE_DISPLAY_CAP_CODEC_VP9, "vp9",
+      "vp9dec", "video/x-vp9" },
+};
+
+G_STATIC_ASSERT(G_N_ELEMENTS(gst_opts) <= SPICE_VIDEO_CODEC_TYPE_ENUM_END);
+
+#define VALID_VIDEO_CODEC_TYPE(codec) \
+    (codec > 0 && codec < G_N_ELEMENTS(gst_opts))
+
 guint32 stream_get_time(display_stream *st);
 void stream_dropped_frame_on_playback(display_stream *st);
 void stream_display_frame(display_stream *st, SpiceFrame *frame, uint32_t width, uint32_t height, uint8_t* data);
diff --git a/src/channel-display.c b/src/channel-display.c
index 06c503c..e51064a 100644
--- a/src/channel-display.c
+++ b/src/channel-display.c
@@ -764,16 +764,6 @@ static HDC create_compatible_dc(void)
 static void spice_display_channel_reset_capabilities(SpiceChannel *channel)
 {
     guint i;
-    static const struct {
-        SpiceVideoCodecType type;
-        int cap;
-        const gchar name[8];
-    } gst_codecs[] = {
-        {SPICE_VIDEO_CODEC_TYPE_MJPEG, SPICE_DISPLAY_CAP_CODEC_MJPEG, "mjpeg"},
-        {SPICE_VIDEO_CODEC_TYPE_VP8, SPICE_DISPLAY_CAP_CODEC_VP8, "vp8"},
-        {SPICE_VIDEO_CODEC_TYPE_H264, SPICE_DISPLAY_CAP_CODEC_H264, "h264"},
-        {SPICE_VIDEO_CODEC_TYPE_VP9, SPICE_DISPLAY_CAP_CODEC_VP9, "vp9"},
-    };
 
     spice_channel_set_capability(SPICE_CHANNEL(channel), SPICE_DISPLAY_CAP_SIZED_STREAM);
     spice_channel_set_capability(SPICE_CHANNEL(channel), SPICE_DISPLAY_CAP_MONITORS_CONFIG);
@@ -792,11 +782,11 @@ static void spice_display_channel_reset_capabilities(SpiceChannel *channel)
 #ifdef HAVE_BUILTIN_MJPEG
     spice_channel_set_capability(SPICE_CHANNEL(channel), SPICE_DISPLAY_CAP_CODEC_MJPEG);
 #endif
-    for (i = 0; i < G_N_ELEMENTS(gst_codecs); i++) {
-        if (gstvideo_has_codec(gst_codecs[i].type)) {
-            spice_channel_set_capability(SPICE_CHANNEL(channel), gst_codecs[i].cap);
+    for (i = 1; i < G_N_ELEMENTS(gst_opts); i++) {
+        if (gstvideo_has_codec(i)) {
+            spice_channel_set_capability(SPICE_CHANNEL(channel), gst_opts[i].cap);
         } else {
-            SPICE_DEBUG("GStreamer does not support the %s codec", gst_codecs[i].name);
+            SPICE_DEBUG("GStreamer does not support the %s codec", gst_opts[i].name);
         }
     }
 }
-- 
2.13.0



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