1 files changed, 7 insertions, 88 deletions

diff --git a/libavcodec/qsvdec_mpeg2.c b/libavcodec/qsvdec_mpeg2.c
index c319ac0df1..70ccbc5949 100644
--- a/libavcodec/qsvdec_mpeg2.c
+++ b/libavcodec/qsvdec_mpeg2.c
@@ -1,91 +1,49 @@
 /*
- * Intel MediaSDK QSV based MPEG-2 decoder
+ * Intel MediaSDK QSV based MPEG-2 video decoder
  *
- * copyright (c) 2015 Anton Khirnov
+ * This file is part of FFmpeg.
  *
- * This file is part of Libav.
- *
- * 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
  */
 
-
 #include <stdint.h>
 #include <string.h>
 
-#include <mfx/mfxvideo.h>
-
 #include "libavutil/common.h"
-#include "libavutil/fifo.h"
 #include "libavutil/opt.h"
 
 #include "avcodec.h"
-#include "internal.h"
-#include "qsv_internal.h"
 #include "qsvdec.h"
-#include "qsv.h"
 
 typedef struct QSVMPEG2Context {
     AVClass *class;
     QSVContext qsv;
-
-    AVFifoBuffer *packet_fifo;
-
-    AVPacket input_ref;
 } QSVMPEG2Context;
 
-static void qsv_clear_buffers(QSVMPEG2Context *s)
-{
-    AVPacket pkt;
-    while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
-        av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
-        av_packet_unref(&pkt);
-    }
-
-    av_packet_unref(&s->input_ref);
-}
-
 static av_cold int qsv_decode_close(AVCodecContext *avctx)
 {
     QSVMPEG2Context *s = avctx->priv_data;
 
     ff_qsv_decode_close(&s->qsv);
 
-    qsv_clear_buffers(s);
-
-    av_fifo_free(s->packet_fifo);
-
     return 0;
 }
 
 static av_cold int qsv_decode_init(AVCodecContext *avctx)
 {
-    QSVMPEG2Context *s = avctx->priv_data;
-    int ret;
-
-    s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
-    if (!s->packet_fifo) {
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-
-    s->qsv.iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
-
     return 0;
-fail:
-    qsv_decode_close(avctx);
-    return ret;
 }
 
 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
@@ -93,53 +51,14 @@ static int qsv_decode_frame(AVCodecContext *avctx, void *data,
 {
     QSVMPEG2Context *s = avctx->priv_data;
     AVFrame *frame    = data;
-    int ret;
-
-    /* buffer the input packet */
-    if (avpkt->size) {
-        AVPacket input_ref = { 0 };
-
-        if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
-            ret = av_fifo_realloc2(s->packet_fifo,
-                                   av_fifo_size(s->packet_fifo) + sizeof(input_ref));
-            if (ret < 0)
-                return ret;
-        }
-
-        ret = av_packet_ref(&input_ref, avpkt);
-        if (ret < 0)
-            return ret;
-        av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
-    }
 
-    /* process buffered data */
-    while (!*got_frame) {
-        if (s->input_ref.size <= 0) {
-            /* no more data */
-            if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
-                return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
-
-            av_packet_unref(&s->input_ref);
-            av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
-        }
-
-        ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
-        if (ret < 0)
-            return ret;
-
-        s->input_ref.size -= ret;
-        s->input_ref.data += ret;
-    }
-
-    return avpkt->size;
+    return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
 }
 
 static void qsv_decode_flush(AVCodecContext *avctx)
 {
     QSVMPEG2Context *s = avctx->priv_data;
-
-    qsv_clear_buffers(s);
-    ff_qsv_decode_flush(avctx, &s->qsv);
+    ff_qsv_decode_reset(avctx, &s->qsv);
 }
 
 AVHWAccel ff_mpeg2_qsv_hwaccel = {