[FFmpeg-devel] [PATCH 5/5] lavc/encoder: declare caps for encoding with variable dimension

[Linjie Fu]

Signed-off-by: Linjie Fu <linjie.fu at intel.com>
---
This patch is for RFC:
Did some tests on some of the encoders and find some encoders
not suitable for now, hence didn't declare the caps for them:
1. libx264: seems have frame drop.
2. hardware encoders like vaapi: failed.

Hence before we got all encoders supported, I'd prefer to declare
caps for specific encoder and add the enhancement step by step.

 libavcodec/libopenh264enc.c  | 4 +++-
 libavcodec/libvpxenc.c       | 4 +++-
 libavcodec/libx265.c         | 4 +++-
 libavcodec/rawenc.c          | 3 ++-
 libavcodec/wrapped_avframe.c | 3 ++-
 5 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index f63aa52..b86041b 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -438,7 +438,9 @@ AVCodec ff_libopenh264_encoder = {
     .init           = svc_encode_init,
     .encode2        = svc_encode_frame,
     .close          = svc_encode_close,
-    .capabilities   = AV_CODEC_CAP_AUTO_THREADS,
+    .capabilities   = AV_CODEC_CAP_AUTO_THREADS |
+                      AV_CODEC_CAP_VARIABLE_DIMENSIONS |
+                      AV_CODEC_CAP_ENCODER_FLUSH,
     .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 8e0ea42..9faec48 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -1789,7 +1789,9 @@ AVCodec ff_libvpx_vp9_encoder = {
     .init           = vp9_init,
     .encode2        = vpx_encode,
     .close          = vpx_free,
-    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS |
+                      AV_CODEC_CAP_VARIABLE_DIMENSIONS |
+                      AV_CODEC_CAP_ENCODER_FLUSH,
     .profiles       = NULL_IF_CONFIG_SMALL(ff_vp9_profiles),
     .priv_class     = &class_vp9,
     .defaults       = defaults,
diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index f560d7f..2a9ec4e 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -701,6 +701,8 @@ AVCodec ff_libx265_encoder = {
     .priv_class       = &class,
     .defaults         = x265_defaults,
     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS |
-                        AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
+                        AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE |
+                        AV_CODEC_CAP_VARIABLE_DIMENSIONS |
+                        AV_CODEC_CAP_ENCODER_FLUSH,
     .wrapper_name     = "libx265",
 };
diff --git a/libavcodec/rawenc.c b/libavcodec/rawenc.c
index 486c0d7..85298dc 100644
--- a/libavcodec/rawenc.c
+++ b/libavcodec/rawenc.c
@@ -92,5 +92,6 @@ AVCodec ff_rawvideo_encoder = {
     .id             = AV_CODEC_ID_RAWVIDEO,
     .init           = raw_encode_init,
     .encode2        = raw_encode,
-    .capabilities   = AV_CODEC_CAP_VARIABLE_DIMENSIONS,
+    .capabilities   = AV_CODEC_CAP_VARIABLE_DIMENSIONS |
+                      AV_CODEC_CAP_ENCODER_FLUSH,
 };
diff --git a/libavcodec/wrapped_avframe.c b/libavcodec/wrapped_avframe.c
index ae29328..9af3193 100644
--- a/libavcodec/wrapped_avframe.c
+++ b/libavcodec/wrapped_avframe.c
@@ -116,7 +116,8 @@ AVCodec ff_wrapped_avframe_encoder = {
     .id             = AV_CODEC_ID_WRAPPED_AVFRAME,
     .encode2        = wrapped_avframe_encode,
     .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
-    .capabilities   = AV_CODEC_CAP_VARIABLE_DIMENSIONS,
+    .capabilities   = AV_CODEC_CAP_VARIABLE_DIMENSIONS |
+                      AV_CODEC_CAP_ENCODER_FLUSH,
 };
 
 AVCodec ff_wrapped_avframe_decoder = {
-- 
2.7.4