avcodec: v4l2_m2m: fix races around freeing data on close

[ffmpeg] / libavcodec / qsvdec_other.c

diff --git a/libavcodec/qsvdec_other.c b/libavcodec/qsvdec_other.c
index 63cc113c5cbe25254ae587db9af07b8d8b289589..3c872dcfc2a9c3e902fbbf4d2f144515faafe380 100644 (file)
--- a/libavcodec/qsvdec_other.c
+++ b/libavcodec/qsvdec_other.c
@@ -3,20 +3,20 @@
  *
  * copyright (c) 2015 Anton Khirnov
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -163,15 +163,6 @@ static const AVOption options[] = {
     { NULL },
 };
 
-#if CONFIG_MPEG2_QSV_HWACCEL
-AVHWAccel ff_mpeg2_qsv_hwaccel = {
-    .name           = "mpeg2_qsv",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_MPEG2VIDEO,
-    .pix_fmt        = AV_PIX_FMT_QSV,
-};
-#endif
-
 #if CONFIG_MPEG2_QSV_DECODER
 static const AVClass mpeg2_qsv_class = {
     .class_name = "mpeg2_qsv",
@@ -190,7 +181,7 @@ AVCodec ff_mpeg2_qsv_decoder = {
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
-    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_HYBRID,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &mpeg2_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,
@@ -200,15 +191,6 @@ AVCodec ff_mpeg2_qsv_decoder = {
 };
 #endif
 
-#if CONFIG_VC1_QSV_HWACCEL
-AVHWAccel ff_vc1_qsv_hwaccel = {
-    .name           = "vc1_qsv",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_VC1,
-    .pix_fmt        = AV_PIX_FMT_QSV,
-};
-#endif
-
 #if CONFIG_VC1_QSV_DECODER
 static const AVClass vc1_qsv_class = {
     .class_name = "vc1_qsv",
@@ -227,7 +209,7 @@ AVCodec ff_vc1_qsv_decoder = {
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
-    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_HYBRID,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &vc1_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,
@@ -237,15 +219,6 @@ AVCodec ff_vc1_qsv_decoder = {
 };
 #endif
 
-#if CONFIG_VP8_QSV_HWACCEL
-AVHWAccel ff_vp8_qsv_hwaccel = {
-    .name           = "vp8_qsv",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_VP8,
-    .pix_fmt        = AV_PIX_FMT_QSV,
-};
-#endif
-
 #if CONFIG_VP8_QSV_DECODER
 static const AVClass vp8_qsv_class = {
     .class_name = "vp8_qsv",
@@ -264,7 +237,7 @@ AVCodec ff_vp8_qsv_decoder = {
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
-    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_HYBRID,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &vp8_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,