/*
  * This file is part of FFmpeg.
  *
  * 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.
  *
  * 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 FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavutil/avassert.h"
 #include "libavutil/common.h"

 #include "libavutil/pixdesc.h"

 
 #include "avcodec.h"

 #include "decode.h"

 #include "internal.h"
 #include "vaapi_decode.h"

 #include "vaapi_hevc.h"

 
 
 int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
                                       VAAPIDecodePicture *pic,
                                       int type,
                                       const void *data,
                                       size_t size)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
     VABufferID buffer;
 
     av_assert0(pic->nb_param_buffers + 1 <= MAX_PARAM_BUFFERS);
 
     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
                          type, size, 1, (void*)data, &buffer);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create parameter "
                "buffer (type %d): %d (%s).\n",
                type, vas, vaErrorStr(vas));
         return AVERROR(EIO);
     }
 
     pic->param_buffers[pic->nb_param_buffers++] = buffer;
 
     av_log(avctx, AV_LOG_DEBUG, "Param buffer (type %d, %zu bytes) "
            "is %#x.\n", type, size, buffer);
     return 0;
 }
 
 
 int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
                                       VAAPIDecodePicture *pic,
                                       const void *params_data,
                                       size_t params_size,
                                       const void *slice_data,
                                       size_t slice_size)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
     int index;
 
     av_assert0(pic->nb_slices <= pic->slices_allocated);
     if (pic->nb_slices == pic->slices_allocated) {
         if (pic->slices_allocated > 0)
             pic->slices_allocated *= 2;
         else
             pic->slices_allocated = 64;
 
         pic->slice_buffers =
             av_realloc_array(pic->slice_buffers,
                              pic->slices_allocated,
                              2 * sizeof(*pic->slice_buffers));
         if (!pic->slice_buffers)
             return AVERROR(ENOMEM);
     }
     av_assert0(pic->nb_slices + 1 <= pic->slices_allocated);
 
     index = 2 * pic->nb_slices;
 
     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
                          VASliceParameterBufferType,
                          params_size, 1, (void*)params_data,
                          &pic->slice_buffers[index]);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
                "parameter buffer: %d (%s).\n", vas, vaErrorStr(vas));
         return AVERROR(EIO);
     }
 
     av_log(avctx, AV_LOG_DEBUG, "Slice %d param buffer (%zu bytes) "
            "is %#x.\n", pic->nb_slices, params_size,
            pic->slice_buffers[index]);
 
     vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
                          VASliceDataBufferType,
                          slice_size, 1, (void*)slice_data,
                          &pic->slice_buffers[index + 1]);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
                "data buffer (size %zu): %d (%s).\n",
                slice_size, vas, vaErrorStr(vas));
         vaDestroyBuffer(ctx->hwctx->display,
                         pic->slice_buffers[index]);
         return AVERROR(EIO);
     }
 
     av_log(avctx, AV_LOG_DEBUG, "Slice %d data buffer (%zu bytes) "
            "is %#x.\n", pic->nb_slices, slice_size,
            pic->slice_buffers[index + 1]);
 
     ++pic->nb_slices;
     return 0;
 }
 
 static void ff_vaapi_decode_destroy_buffers(AVCodecContext *avctx,
                                             VAAPIDecodePicture *pic)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
     int i;
 
     for (i = 0; i < pic->nb_param_buffers; i++) {
         vas = vaDestroyBuffer(ctx->hwctx->display,
                               pic->param_buffers[i]);
         if (vas != VA_STATUS_SUCCESS) {
             av_log(avctx, AV_LOG_ERROR, "Failed to destroy "
                    "parameter buffer %#x: %d (%s).\n",
                    pic->param_buffers[i], vas, vaErrorStr(vas));
         }
     }
 
     for (i = 0; i < 2 * pic->nb_slices; i++) {
         vas = vaDestroyBuffer(ctx->hwctx->display,
                               pic->slice_buffers[i]);
         if (vas != VA_STATUS_SUCCESS) {
             av_log(avctx, AV_LOG_ERROR, "Failed to destroy slice "
                    "slice buffer %#x: %d (%s).\n",
                    pic->slice_buffers[i], vas, vaErrorStr(vas));
         }
     }
 }
 
 int ff_vaapi_decode_issue(AVCodecContext *avctx,
                           VAAPIDecodePicture *pic)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
     int err;
 
     av_log(avctx, AV_LOG_DEBUG, "Decode to surface %#x.\n",
            pic->output_surface);
 
     vas = vaBeginPicture(ctx->hwctx->display, ctx->va_context,
                          pic->output_surface);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to begin picture decode "
                "issue: %d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);
         goto fail_with_picture;
     }
 
     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
                           pic->param_buffers, pic->nb_param_buffers);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to upload decode "
                "parameters: %d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);
         goto fail_with_picture;
     }
 
     vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
                           pic->slice_buffers, 2 * pic->nb_slices);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to upload slices: "
                "%d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);
         goto fail_with_picture;
     }
 
     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
                "issue: %d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);

         if (CONFIG_VAAPI_1 || ctx->hwctx->driver_quirks &

             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
             goto fail;
         else
             goto fail_at_end;
     }
 

     if (CONFIG_VAAPI_1 || ctx->hwctx->driver_quirks &

         AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
         ff_vaapi_decode_destroy_buffers(avctx, pic);
 

     err = 0;
     goto exit;

 
 fail_with_picture:
     vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
                "after error: %d (%s).\n", vas, vaErrorStr(vas));
     }
 fail:
     ff_vaapi_decode_destroy_buffers(avctx, pic);
 fail_at_end:

 exit:
     pic->nb_param_buffers = 0;
     pic->nb_slices        = 0;
     pic->slices_allocated = 0;
     av_freep(&pic->slice_buffers);
 

     return err;
 }
 
 int ff_vaapi_decode_cancel(AVCodecContext *avctx,
                            VAAPIDecodePicture *pic)
 {
     ff_vaapi_decode_destroy_buffers(avctx, pic);
 
     pic->nb_param_buffers = 0;
     pic->nb_slices        = 0;
     pic->slices_allocated = 0;
     av_freep(&pic->slice_buffers);
 
     return 0;
 }
 
 static const struct {

     uint32_t fourcc;
     enum AVPixelFormat pix_fmt;
 } vaapi_format_map[] = {
 #define MAP(va, av) { VA_FOURCC_ ## va, AV_PIX_FMT_ ## av }
     // 4:0:0
     MAP(Y800, GRAY8),
     // 4:2:0
     MAP(NV12, NV12),
     MAP(YV12, YUV420P),
     MAP(IYUV, YUV420P),
 #ifdef VA_FOURCC_I420
     MAP(I420, YUV420P),
 #endif
     MAP(IMC3, YUV420P),
     // 4:1:1
     MAP(411P, YUV411P),
     // 4:2:2
     MAP(422H, YUV422P),
 #ifdef VA_FOURCC_YV16
     MAP(YV16, YUV422P),
 #endif

     MAP(YUY2, YUYV422),
 #ifdef VA_FOURCC_Y210
     MAP(Y210,    Y210),
 #endif

     // 4:4:0
     MAP(422V, YUV440P),
     // 4:4:4
     MAP(444P, YUV444P),
     // 4:2:0 10-bit
 #ifdef VA_FOURCC_P010
     MAP(P010, P010),
 #endif
 #ifdef VA_FOURCC_I010
     MAP(I010, YUV420P10),
 #endif
 #undef MAP
 };
 
 static int vaapi_decode_find_best_format(AVCodecContext *avctx,
                                          AVHWDeviceContext *device,
                                          VAConfigID config_id,
                                          AVHWFramesContext *frames)
 {
     AVVAAPIDeviceContext *hwctx = device->hwctx;
     VAStatus vas;
     VASurfaceAttrib *attr;
     enum AVPixelFormat source_format, best_format, format;
     uint32_t best_fourcc, fourcc;
     int i, j, nb_attr;
 
     source_format = avctx->sw_pix_fmt;
     av_assert0(source_format != AV_PIX_FMT_NONE);
 
     vas = vaQuerySurfaceAttributes(hwctx->display, config_id,
                                    NULL, &nb_attr);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to query surface attributes: "
                "%d (%s).\n", vas, vaErrorStr(vas));
         return AVERROR(ENOSYS);
     }
 
     attr = av_malloc_array(nb_attr, sizeof(*attr));
     if (!attr)
         return AVERROR(ENOMEM);
 
     vas = vaQuerySurfaceAttributes(hwctx->display, config_id,
                                    attr, &nb_attr);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to query surface attributes: "
                "%d (%s).\n", vas, vaErrorStr(vas));
         av_freep(&attr);
         return AVERROR(ENOSYS);
     }
 
     best_format = AV_PIX_FMT_NONE;
 
     for (i = 0; i < nb_attr; i++) {
         if (attr[i].type != VASurfaceAttribPixelFormat)
             continue;
 
         fourcc = attr[i].value.value.i;
         for (j = 0; j < FF_ARRAY_ELEMS(vaapi_format_map); j++) {
             if (fourcc == vaapi_format_map[j].fourcc)
                 break;
         }
         if (j >= FF_ARRAY_ELEMS(vaapi_format_map)) {
             av_log(avctx, AV_LOG_DEBUG, "Ignoring unknown format %#x.\n",
                    fourcc);
             continue;
         }
         format = vaapi_format_map[j].pix_fmt;
         av_log(avctx, AV_LOG_DEBUG, "Considering format %#x -> %s.\n",
                fourcc, av_get_pix_fmt_name(format));
 
         best_format = av_find_best_pix_fmt_of_2(format, best_format,
                                                 source_format, 0, NULL);
         if (format == best_format)
             best_fourcc = fourcc;
     }
 
     av_freep(&attr);
 
     if (best_format == AV_PIX_FMT_NONE) {
         av_log(avctx, AV_LOG_ERROR, "No usable formats for decoding!\n");
         return AVERROR(EINVAL);
     }
 
     av_log(avctx, AV_LOG_DEBUG, "Picked %s (%#x) as best match for %s.\n",
            av_get_pix_fmt_name(best_format), best_fourcc,
            av_get_pix_fmt_name(source_format));
 
     frames->sw_format = best_format;
     if (avctx->internal->hwaccel_priv_data) {
         VAAPIDecodeContext    *ctx = avctx->internal->hwaccel_priv_data;
         AVVAAPIFramesContext *avfc = frames->hwctx;
 
         ctx->pixel_format_attribute = (VASurfaceAttrib) {
             .type          = VASurfaceAttribPixelFormat,
             .value.value.i = best_fourcc,
         };
 
         avfc->attributes    = &ctx->pixel_format_attribute;
         avfc->nb_attributes = 1;
     }
 
     return 0;
 }
 
 static const struct {

     enum AVCodecID codec_id;
     int codec_profile;
     VAProfile va_profile;

     VAProfile (*profile_parser)(AVCodecContext *avctx);

 } vaapi_profile_map[] = {

 #define MAP(c, p, v, ...) { AV_CODEC_ID_ ## c, FF_PROFILE_ ## p, VAProfile ## v, __VA_ARGS__ }

     MAP(MPEG2VIDEO,  MPEG2_SIMPLE,    MPEG2Simple ),
     MAP(MPEG2VIDEO,  MPEG2_MAIN,      MPEG2Main   ),
     MAP(H263,        UNKNOWN,         H263Baseline),
     MAP(MPEG4,       MPEG4_SIMPLE,    MPEG4Simple ),
     MAP(MPEG4,       MPEG4_ADVANCED_SIMPLE,
                                MPEG4AdvancedSimple),
     MAP(MPEG4,       MPEG4_MAIN,      MPEG4Main   ),
     MAP(H264,        H264_CONSTRAINED_BASELINE,
                            H264ConstrainedBaseline),
     MAP(H264,        H264_MAIN,       H264Main    ),
     MAP(H264,        H264_HIGH,       H264High    ),
 #if VA_CHECK_VERSION(0, 37, 0)
     MAP(HEVC,        HEVC_MAIN,       HEVCMain    ),
     MAP(HEVC,        HEVC_MAIN_10,    HEVCMain10  ),

     MAP(HEVC,        HEVC_MAIN_STILL_PICTURE,
                                       HEVCMain    ),

 #endif

 #if VA_CHECK_VERSION(1, 2, 0) && CONFIG_HEVC_VAAPI_HWACCEL

     MAP(HEVC,        HEVC_REXT,       None,
                  ff_vaapi_parse_hevc_rext_profile ),
 #endif

     MAP(MJPEG,       MJPEG_HUFFMAN_BASELINE_DCT,
                                       JPEGBaseline),

     MAP(WMV3,        VC1_SIMPLE,      VC1Simple   ),
     MAP(WMV3,        VC1_MAIN,        VC1Main     ),
     MAP(WMV3,        VC1_COMPLEX,     VC1Advanced ),
     MAP(WMV3,        VC1_ADVANCED,    VC1Advanced ),
     MAP(VC1,         VC1_SIMPLE,      VC1Simple   ),
     MAP(VC1,         VC1_MAIN,        VC1Main     ),
     MAP(VC1,         VC1_COMPLEX,     VC1Advanced ),
     MAP(VC1,         VC1_ADVANCED,    VC1Advanced ),
     MAP(VP8,         UNKNOWN,       VP8Version0_3 ),
 #if VA_CHECK_VERSION(0, 38, 0)
     MAP(VP9,         VP9_0,           VP9Profile0 ),
 #endif
 #if VA_CHECK_VERSION(0, 39, 0)
     MAP(VP9,         VP9_2,           VP9Profile2 ),
 #endif
 #undef MAP
 };
 

 /*
  * Set *va_config and the frames_ref fields from the current codec parameters
  * in avctx.
  */
 static int vaapi_decode_make_config(AVCodecContext *avctx,
                                     AVBufferRef *device_ref,
                                     VAConfigID *va_config,
                                     AVBufferRef *frames_ref)

 {
     AVVAAPIHWConfig       *hwconfig    = NULL;
     AVHWFramesConstraints *constraints = NULL;
     VAStatus vas;
     int err, i, j;
     const AVCodecDescriptor *codec_desc;

     VAProfile *profile_list = NULL, matched_va_profile, va_profile;
     int profile_count, exact_match, matched_ff_profile, codec_profile;

     AVHWDeviceContext    *device = (AVHWDeviceContext*)device_ref->data;
     AVVAAPIDeviceContext *hwctx = device->hwctx;
 

     codec_desc = avcodec_descriptor_get(avctx->codec_id);
     if (!codec_desc) {
         err = AVERROR(EINVAL);
         goto fail;
     }
 

     profile_count = vaMaxNumProfiles(hwctx->display);

     profile_list  = av_malloc_array(profile_count,
                                     sizeof(VAProfile));
     if (!profile_list) {
         err = AVERROR(ENOMEM);
         goto fail;
     }
 

     vas = vaQueryConfigProfiles(hwctx->display,

                                 profile_list, &profile_count);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to query profiles: "
                "%d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(ENOSYS);
         goto fail;
     }
 

     matched_va_profile = VAProfileNone;

     exact_match = 0;
 
     for (i = 0; i < FF_ARRAY_ELEMS(vaapi_profile_map); i++) {
         int profile_match = 0;
         if (avctx->codec_id != vaapi_profile_map[i].codec_id)
             continue;

         if (avctx->profile == vaapi_profile_map[i].codec_profile ||
             vaapi_profile_map[i].codec_profile == FF_PROFILE_UNKNOWN)

             profile_match = 1;

 
         va_profile = vaapi_profile_map[i].profile_parser ?
                      vaapi_profile_map[i].profile_parser(avctx) :
                      vaapi_profile_map[i].va_profile;
         codec_profile = vaapi_profile_map[i].codec_profile;
 

         for (j = 0; j < profile_count; j++) {

             if (va_profile == profile_list[j]) {

                 exact_match = profile_match;
                 break;
             }
         }
         if (j < profile_count) {

             matched_va_profile = va_profile;
             matched_ff_profile = codec_profile;

             if (exact_match)
                 break;
         }
     }
     av_freep(&profile_list);
 

     if (matched_va_profile == VAProfileNone) {

         av_log(avctx, AV_LOG_ERROR, "No support for codec %s "
                "profile %d.\n", codec_desc->name, avctx->profile);
         err = AVERROR(ENOSYS);
         goto fail;
     }
     if (!exact_match) {

         if (avctx->hwaccel_flags &
             AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH) {

             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
                    "supported for hardware decode.\n",
                    codec_desc->name, avctx->profile);
             av_log(avctx, AV_LOG_WARNING, "Using possibly-"
                    "incompatible profile %d instead.\n",

                    matched_ff_profile);

         } else {
             av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
                    "supported for hardware decode.\n",
                    codec_desc->name, avctx->profile);
             err = AVERROR(EINVAL);
             goto fail;
         }
     }
 

     vas = vaCreateConfig(hwctx->display, matched_va_profile,

                          VAEntrypointVLD, NULL, 0,
                          va_config);

     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
                "configuration: %d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);
         goto fail;
     }
 

     hwconfig = av_hwdevice_hwconfig_alloc(device_ref);

     if (!hwconfig) {
         err = AVERROR(ENOMEM);
         goto fail;
     }

     hwconfig->config_id = *va_config;

 
     constraints =

         av_hwdevice_get_hwframe_constraints(device_ref, hwconfig);

     if (!constraints) {

         err = AVERROR(ENOMEM);
         goto fail;
     }
 
     if (avctx->coded_width  < constraints->min_width  ||
         avctx->coded_height < constraints->min_height ||
         avctx->coded_width  > constraints->max_width  ||
         avctx->coded_height > constraints->max_height) {
         av_log(avctx, AV_LOG_ERROR, "Hardware does not support image "
                "size %dx%d (constraints: width %d-%d height %d-%d).\n",
                avctx->coded_width, avctx->coded_height,
                constraints->min_width,  constraints->max_width,
                constraints->min_height, constraints->max_height);
         err = AVERROR(EINVAL);
         goto fail;
     }
     if (!constraints->valid_sw_formats ||
         constraints->valid_sw_formats[0] == AV_PIX_FMT_NONE) {
         av_log(avctx, AV_LOG_ERROR, "Hardware does not offer any "
                "usable surface formats.\n");
         err = AVERROR(EINVAL);
         goto fail;
     }
 

     if (frames_ref) {
         AVHWFramesContext *frames = (AVHWFramesContext *)frames_ref->data;
 
         frames->format = AV_PIX_FMT_VAAPI;
         frames->width = avctx->coded_width;
         frames->height = avctx->coded_height;
 

         err = vaapi_decode_find_best_format(avctx, device,
                                             *va_config, frames);
         if (err < 0)
             goto fail;

         frames->initial_pool_size = 1;
         // Add per-codec number of surfaces used for storing reference frames.
         switch (avctx->codec_id) {
         case AV_CODEC_ID_H264:
         case AV_CODEC_ID_HEVC:
             frames->initial_pool_size += 16;
             break;
         case AV_CODEC_ID_VP9:
             frames->initial_pool_size += 8;
             break;
         case AV_CODEC_ID_VP8:
             frames->initial_pool_size += 3;
             break;
         default:
             frames->initial_pool_size += 2;
         }

     }
 
     av_hwframe_constraints_free(&constraints);
     av_freep(&hwconfig);
 
     return 0;
 
 fail:
     av_hwframe_constraints_free(&constraints);
     av_freep(&hwconfig);

     if (*va_config != VA_INVALID_ID) {
         vaDestroyConfig(hwctx->display, *va_config);
         *va_config = VA_INVALID_ID;

     }
     av_freep(&profile_list);
     return err;
 }
 

 int ff_vaapi_common_frame_params(AVCodecContext *avctx,
                                  AVBufferRef *hw_frames_ctx)
 {
     AVHWFramesContext *hw_frames = (AVHWFramesContext *)hw_frames_ctx->data;
     AVHWDeviceContext *device_ctx = hw_frames->device_ctx;
     AVVAAPIDeviceContext *hwctx;
     VAConfigID va_config = VA_INVALID_ID;
     int err;
 
     if (device_ctx->type != AV_HWDEVICE_TYPE_VAAPI)
         return AVERROR(EINVAL);
     hwctx = device_ctx->hwctx;
 
     err = vaapi_decode_make_config(avctx, hw_frames->device_ref, &va_config,
                                    hw_frames_ctx);
     if (err)
         return err;
 
     if (va_config != VA_INVALID_ID)
         vaDestroyConfig(hwctx->display, va_config);
 
     return 0;
 }
 

 int ff_vaapi_decode_init(AVCodecContext *avctx)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
     int err;
 
     ctx->va_config  = VA_INVALID_ID;
     ctx->va_context = VA_INVALID_ID;
 

 #if FF_API_STRUCT_VAAPI_CONTEXT

     if (avctx->hwaccel_context) {
         av_log(avctx, AV_LOG_WARNING, "Using deprecated struct "
                "vaapi_context in decode.\n");
 
         ctx->have_old_context = 1;
         ctx->old_context = avctx->hwaccel_context;
 
         // Really we only want the VAAPI device context, but this
         // allocates a whole generic device context because we don't
         // have any other way to determine how big it should be.
         ctx->device_ref =
             av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
         if (!ctx->device_ref) {
             err = AVERROR(ENOMEM);
             goto fail;
         }
         ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
         ctx->hwctx  = ctx->device->hwctx;
 
         ctx->hwctx->display = ctx->old_context->display;
 
         // The old VAAPI decode setup assumed this quirk was always
         // present, so set it here to avoid the behaviour changing.
         ctx->hwctx->driver_quirks =
             AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS;
 
     }

 #endif

 #if FF_API_STRUCT_VAAPI_CONTEXT

     if (ctx->have_old_context) {
         ctx->va_config  = ctx->old_context->config_id;
         ctx->va_context = ctx->old_context->context_id;
 
         av_log(avctx, AV_LOG_DEBUG, "Using user-supplied decoder "
                "context: %#x/%#x.\n", ctx->va_config, ctx->va_context);
     } else {

 #endif

     err = ff_decode_get_hw_frames_ctx(avctx, AV_HWDEVICE_TYPE_VAAPI);
     if (err < 0)

         goto fail;

     ctx->frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
     ctx->hwfc   = ctx->frames->hwctx;
     ctx->device = ctx->frames->device_ctx;
     ctx->hwctx  = ctx->device->hwctx;

     err = vaapi_decode_make_config(avctx, ctx->frames->device_ref,
                                    &ctx->va_config, avctx->hw_frames_ctx);
     if (err)
         goto fail;

     vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
                           avctx->coded_width, avctx->coded_height,
                           VA_PROGRESSIVE,
                           ctx->hwfc->surface_ids,
                           ctx->hwfc->nb_surfaces,
                           &ctx->va_context);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
                "context: %d (%s).\n", vas, vaErrorStr(vas));
         err = AVERROR(EIO);
         goto fail;

     }
 

     av_log(avctx, AV_LOG_DEBUG, "Decode context initialised: "
            "%#x/%#x.\n", ctx->va_config, ctx->va_context);
 #if FF_API_STRUCT_VAAPI_CONTEXT
     }
 #endif
 

     return 0;
 
 fail:
     ff_vaapi_decode_uninit(avctx);
     return err;
 }
 
 int ff_vaapi_decode_uninit(AVCodecContext *avctx)
 {
     VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
     VAStatus vas;
 

 #if FF_API_STRUCT_VAAPI_CONTEXT

     if (ctx->have_old_context) {
         av_buffer_unref(&ctx->device_ref);
     } else {

 #endif
 
     if (ctx->va_context != VA_INVALID_ID) {
         vas = vaDestroyContext(ctx->hwctx->display, ctx->va_context);
         if (vas != VA_STATUS_SUCCESS) {
             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
                    "context %#x: %d (%s).\n",
                    ctx->va_context, vas, vaErrorStr(vas));

         }

     }
     if (ctx->va_config != VA_INVALID_ID) {
         vas = vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
         if (vas != VA_STATUS_SUCCESS) {
             av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
                    "configuration %#x: %d (%s).\n",
                    ctx->va_config, vas, vaErrorStr(vas));

         }
     }
 

 #if FF_API_STRUCT_VAAPI_CONTEXT
     }
 #endif
 

     return 0;
 }