[FFmpeg-devel,v3,4/6] lavc/qsvdec: remove orignal parser code since not needed now

diff --git a/configure b/configure
index bf40c1dcb9..eaa56c07cf 100755
--- a/configure
+++ b/configure
@@ -2973,7 +2973,7 @@  h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
 h264_mmal_decoder_deps="mmal"
 h264_nvenc_encoder_deps="nvenc"
 h264_omx_encoder_deps="omx"
-h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
+h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
 h264_qsv_encoder_select="qsvenc"
 h264_rkmpp_decoder_deps="rkmpp"
 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
@@ -2987,7 +2987,7 @@  hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
 hevc_mediacodec_decoder_deps="mediacodec"
 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
 hevc_nvenc_encoder_deps="nvenc"
-hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
+hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
 hevc_qsv_encoder_select="hevcparse qsvenc"
 hevc_rkmpp_decoder_deps="rkmpp"
 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
@@ -3007,7 +3007,7 @@  mpeg2_crystalhd_decoder_select="crystalhd"
 mpeg2_cuvid_decoder_deps="cuvid"
 mpeg2_mmal_decoder_deps="mmal"
 mpeg2_mediacodec_decoder_deps="mediacodec"
-mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
+mpeg2_qsv_decoder_select="qsvdec"
 mpeg2_qsv_encoder_select="qsvenc"
 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
@@ -3024,11 +3024,11 @@  nvenc_hevc_encoder_select="hevc_nvenc_encoder"
 vc1_crystalhd_decoder_select="crystalhd"
 vc1_cuvid_decoder_deps="cuvid"
 vc1_mmal_decoder_deps="mmal"
-vc1_qsv_decoder_select="qsvdec vc1_parser"
+vc1_qsv_decoder_select="qsvdec"
 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
 vp8_cuvid_decoder_deps="cuvid"
 vp8_mediacodec_decoder_deps="mediacodec"
-vp8_qsv_decoder_select="qsvdec vp8_parser"
+vp8_qsv_decoder_select="qsvdec"
 vp8_rkmpp_decoder_deps="rkmpp"
 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
 vp8_vaapi_encoder_select="vaapi_encode"
diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
index b78026e14d..eda3c9625e 100644
--- a/libavcodec/qsvdec.c
+++ b/libavcodec/qsvdec.c
@@ -498,9 +498,6 @@  int ff_qsv_decode_close(QSVContext *q)
     av_fifo_free(q->async_fifo);
     q->async_fifo = NULL;
 
-    av_parser_close(q->parser);
-    avcodec_free_context(&q->avctx_internal);
-
     if (q->internal_session)
         MFXClose(q->internal_session);
 
@@ -513,38 +510,15 @@  int ff_qsv_decode_close(QSVContext *q)
 int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
                         AVFrame *frame, int *got_frame, AVPacket *pkt)
 {
-    uint8_t *dummy_data;
-    int dummy_size;
     int ret;
     mfxVideoParam param = { 0 };
     enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_QSV,
                                        AV_PIX_FMT_NV12,
                                        AV_PIX_FMT_NONE };
 
-    if (!q->avctx_internal) {
-        q->avctx_internal = avcodec_alloc_context3(NULL);
-        if (!q->avctx_internal)
-            return AVERROR(ENOMEM);
-
-        q->avctx_internal->codec_id = avctx->codec_id;
-
-        q->parser = av_parser_init(avctx->codec_id);
-        if (!q->parser)
-            return AVERROR(ENOMEM);
-
-        q->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
-    }
-
     if (!pkt->size)
         return qsv_decode(avctx, q, frame, got_frame, pkt);
 
-    /* we assume the packets are already split properly and want
-     * just the codec parameters here */
-    av_parser_parse2(q->parser, q->avctx_internal,
-                     &dummy_data, &dummy_size,
-                     pkt->data, pkt->size, pkt->pts, pkt->dts,
-                     pkt->pos);
-
     /* TODO: flush delayed frames on reinit */
 
     // sw_pix_fmt was initialized as NV12, will be updated after header decoded if not true.
@@ -587,7 +561,7 @@  int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
     return qsv_decode(avctx, q, frame, got_frame, pkt);
 
 reinit_fail:
-    q->orig_pix_fmt = q->parser->format = avctx->pix_fmt = AV_PIX_FMT_NONE;
+    q->orig_pix_fmt = avctx->pix_fmt = AV_PIX_FMT_NONE;
     return ret;
 }
 
diff --git a/libavcodec/qsvdec.h b/libavcodec/qsvdec.h
index 4812fb2a6b..c057bc6722 100644
--- a/libavcodec/qsvdec.h
+++ b/libavcodec/qsvdec.h
@@ -56,9 +56,6 @@  typedef struct QSVContext {
     int buffered_count;
     int reinit_flag;
 
-    // the internal parser and codec context for parsing the data
-    AVCodecParserContext *parser;
-    AVCodecContext *avctx_internal;
     enum AVPixelFormat orig_pix_fmt;
     uint32_t fourcc;
     mfxFrameInfo frame_info;