---
doc/APIchanges | 3 +++
libavcodec/avcodec.h | 11 +++++++++++
libavcodec/options_table.h | 1 +
libavcodec/version.h | 2 +-
4 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/doc/APIchanges b/doc/APIchanges
index ab7ce15fae..9c1f905a61 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -14,6 +14,9 @@ libavutil: 2021-04-27
API changes, most recent first:
+2022-12-xx - xxxxxxxxxx - lavc 59.54.101 - avcodec.h
+ Add AV_HWACCEL_FLAG_MINIMIZE_COPIES.
+
2022-11-xx - xxxxxxxxxx - lavu 57.43.100 - tx.h
Add AV_TX_FLOAT_DCT, AV_TX_DOUBLE_DCT and AV_TX_INT32_DCT.
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 3edd8e2636..a72551bb5e 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2253,6 +2253,17 @@ typedef struct AVHWAccel {
*/
#define AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH (1 << 2)
+/**
+ * Hardware acceleration can have a limited number of direct output surfaces.
+ * For some processing chains, this can be okay, but others will run into the
+ * limit and in turn produce very confusing errors.
+ *
+ * Thus, the hwaccel will by default make a safety copy. If a users really
+ * wants to minimize the amount of copies, they can set this flag and ensure
+ * their chain does not exhaust the surface pool.
+ */
+#define AV_HWACCEL_FLAG_MINIMIZE_COPIES (1 << 3)
+
/**
* @}
*/
diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
index cd02f5096f..05e8948bc2 100644
--- a/libavcodec/options_table.h
+++ b/libavcodec/options_table.h
@@ -399,6 +399,7 @@ static const AVOption avcodec_options[] = {
{"ignore_level", "ignore level even if the codec level used is unknown or
higher than the maximum supported level reported by the hardware driver", 0,
AV_OPT_TYPE_CONST, { .i64 = AV_HWACCEL_FLAG_IGNORE_LEVEL }, INT_MIN, INT_MAX, V
| D, "hwaccel_flags" },
{"allow_high_depth", "allow to output YUV pixel formats with a different
chroma sampling than 4:2:0 and/or other than 8 bits per component", 0,
AV_OPT_TYPE_CONST, {.i64 = AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH }, INT_MIN,
INT_MAX, V | D, "hwaccel_flags"},
{"allow_profile_mismatch", "attempt to decode anyway if HW accelerated
decoder's supported profiles do not exactly match the stream", 0,
AV_OPT_TYPE_CONST, {.i64 = AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH }, INT_MIN,
INT_MAX, V | D, "hwaccel_flags"},
+{"minimize_copies", "minimize number of frame copies at cost of risking
surface pool exhaustion", 0, AV_OPT_TYPE_CONST, {.i64 =
AV_HWACCEL_FLAG_MINIMIZE_COPIES }, INT_MIN, INT_MAX, V | D, "hwaccel_flags"},
{"extra_hw_frames", "Number of extra hardware frames to allocate for the
user", OFFSET(extra_hw_frames), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX,
V|D },
{"discard_damaged_percentage", "Percentage of damaged samples to discard a
frame", OFFSET(discard_damaged_percentage), AV_OPT_TYPE_INT, {.i64 = 95 }, 0,
100, V|D },
{NULL},
diff --git a/libavcodec/version.h b/libavcodec/version.h
index d149bc6c46..9e66920593 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -30,7 +30,7 @@
#include "version_major.h"
#define LIBAVCODEC_VERSION_MINOR 54
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
--
2.34.1
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