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ffmpeg/libavcodec/vulkan_h264.c

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/*
* 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 "h264dec.h"
#include "h264_ps.h"
#include "vulkan_decode.h"
const VkExtensionProperties ff_vk_dec_h264_ext = {
.extensionName = VK_STD_VULKAN_VIDEO_CODEC_H264_DECODE_EXTENSION_NAME,
.specVersion = VK_STD_VULKAN_VIDEO_CODEC_H264_DECODE_SPEC_VERSION,
};
typedef struct H264VulkanDecodePicture {
FFVulkanDecodePicture vp;
/* Current picture */
StdVideoDecodeH264ReferenceInfo h264_ref;
VkVideoDecodeH264DpbSlotInfoKHR vkh264_ref;
/* Picture refs */
H264Picture *ref_src [H264_MAX_PICTURE_COUNT];
StdVideoDecodeH264ReferenceInfo h264_refs [H264_MAX_PICTURE_COUNT];
VkVideoDecodeH264DpbSlotInfoKHR vkh264_refs[H264_MAX_PICTURE_COUNT];
/* Current picture (contd.) */
StdVideoDecodeH264PictureInfo h264pic;
VkVideoDecodeH264PictureInfoKHR h264_pic_info;
} H264VulkanDecodePicture;
const static int h264_scaling_list8_order[] = { 0, 3, 1, 4, 2, 5 };
static int vk_h264_fill_pict(AVCodecContext *avctx, H264Picture **ref_src,
VkVideoReferenceSlotInfoKHR *ref_slot, /* Main structure */
VkVideoPictureResourceInfoKHR *ref, /* Goes in ^ */
VkVideoDecodeH264DpbSlotInfoKHR *vkh264_ref, /* Goes in ^ */
StdVideoDecodeH264ReferenceInfo *h264_ref, /* Goes in ^ */
H264Picture *pic, int is_current,
int is_field, int picture_structure,
int dpb_slot_index)
{
FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
H264VulkanDecodePicture *hp = pic->hwaccel_picture_private;
FFVulkanDecodePicture *vkpic = &hp->vp;
int err = ff_vk_decode_prepare_frame(dec, pic->f, vkpic, is_current,
dec->dedicated_dpb);
if (err < 0)
return err;
*h264_ref = (StdVideoDecodeH264ReferenceInfo) {
.FrameNum = pic->long_ref ? pic->pic_id : pic->frame_num,
.PicOrderCnt = { pic->field_poc[0], pic->field_poc[1] },
.flags = (StdVideoDecodeH264ReferenceInfoFlags) {
.top_field_flag = is_field ? !!(picture_structure & PICT_TOP_FIELD) : 0,
.bottom_field_flag = is_field ? !!(picture_structure & PICT_BOTTOM_FIELD) : 0,
.used_for_long_term_reference = pic->reference && pic->long_ref,
/*
* flags.is_non_existing is used to indicate whether the picture is marked as
* “non-existing” as defined in section 8.2.5.2 of the ITU-T H.264 Specification;
* 8.2.5.2 Decoding process for gaps in frame_num
* corresponds to the code in h264_slice.c:h264_field_start,
* which sets the invalid_gap flag when decoding.
*/
.is_non_existing = pic->invalid_gap,
},
};
*vkh264_ref = (VkVideoDecodeH264DpbSlotInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_DPB_SLOT_INFO_KHR,
.pStdReferenceInfo = h264_ref,
};
*ref = (VkVideoPictureResourceInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_PICTURE_RESOURCE_INFO_KHR,
.codedOffset = (VkOffset2D){ 0, 0 },
.codedExtent = (VkExtent2D){ pic->f->width, pic->f->height },
.baseArrayLayer = dec->layered_dpb ? dpb_slot_index : 0,
.imageViewBinding = vkpic->img_view_ref,
};
*ref_slot = (VkVideoReferenceSlotInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_REFERENCE_SLOT_INFO_KHR,
.pNext = vkh264_ref,
.slotIndex = dpb_slot_index,
.pPictureResource = ref,
};
if (ref_src)
*ref_src = pic;
return 0;
}
static StdVideoH264LevelIdc convert_to_vk_level_idc(int level_idc)
{
switch (level_idc) {
case 10: return STD_VIDEO_H264_LEVEL_IDC_1_0;
case 11: return STD_VIDEO_H264_LEVEL_IDC_1_1;
case 12: return STD_VIDEO_H264_LEVEL_IDC_1_2;
case 13: return STD_VIDEO_H264_LEVEL_IDC_1_3;
case 20: return STD_VIDEO_H264_LEVEL_IDC_2_0;
case 21: return STD_VIDEO_H264_LEVEL_IDC_2_1;
case 22: return STD_VIDEO_H264_LEVEL_IDC_2_2;
case 30: return STD_VIDEO_H264_LEVEL_IDC_3_0;
case 31: return STD_VIDEO_H264_LEVEL_IDC_3_1;
case 32: return STD_VIDEO_H264_LEVEL_IDC_3_2;
case 40: return STD_VIDEO_H264_LEVEL_IDC_4_0;
case 41: return STD_VIDEO_H264_LEVEL_IDC_4_1;
case 42: return STD_VIDEO_H264_LEVEL_IDC_4_2;
case 50: return STD_VIDEO_H264_LEVEL_IDC_5_0;
case 51: return STD_VIDEO_H264_LEVEL_IDC_5_1;
case 52: return STD_VIDEO_H264_LEVEL_IDC_5_2;
case 60: return STD_VIDEO_H264_LEVEL_IDC_6_0;
case 61: return STD_VIDEO_H264_LEVEL_IDC_6_1;
default:
case 62: return STD_VIDEO_H264_LEVEL_IDC_6_2;
}
}
static void set_sps(const SPS *sps,
StdVideoH264ScalingLists *vksps_scaling,
StdVideoH264HrdParameters *vksps_vui_header,
StdVideoH264SequenceParameterSetVui *vksps_vui,
StdVideoH264SequenceParameterSet *vksps)
{
*vksps_scaling = (StdVideoH264ScalingLists) {
.scaling_list_present_mask = sps->scaling_matrix_present_mask,
.use_default_scaling_matrix_mask = 0, /* We already fill in the default matrix */
};
for (int i = 0; i < STD_VIDEO_H264_SCALING_LIST_4X4_NUM_LISTS; i++)
for (int j = 0; j < STD_VIDEO_H264_SCALING_LIST_4X4_NUM_ELEMENTS; j++)
vksps_scaling->ScalingList4x4[i][j] = sps->scaling_matrix4[i][ff_zigzag_scan[j]];
for (int i = 0; i < STD_VIDEO_H264_SCALING_LIST_8X8_NUM_LISTS; i++)
for (int j = 0; j < STD_VIDEO_H264_SCALING_LIST_8X8_NUM_ELEMENTS; j++)
vksps_scaling->ScalingList8x8[i][j] =
sps->scaling_matrix8[h264_scaling_list8_order[i]][ff_zigzag_direct[j]];
*vksps_vui_header = (StdVideoH264HrdParameters) {
.cpb_cnt_minus1 = sps->cpb_cnt - 1,
.bit_rate_scale = sps->bit_rate_scale,
.initial_cpb_removal_delay_length_minus1 = sps->initial_cpb_removal_delay_length - 1,
.cpb_removal_delay_length_minus1 = sps->cpb_removal_delay_length - 1,
.dpb_output_delay_length_minus1 = sps->dpb_output_delay_length - 1,
.time_offset_length = sps->time_offset_length,
};
for (int i = 0; i < sps->cpb_cnt; i++) {
vksps_vui_header->bit_rate_value_minus1[i] = sps->bit_rate_value[i] - 1;
vksps_vui_header->cpb_size_value_minus1[i] = sps->cpb_size_value[i] - 1;
vksps_vui_header->cbr_flag[i] = (sps->cpr_flag >> i) & 0x1;
}
*vksps_vui = (StdVideoH264SequenceParameterSetVui) {
.aspect_ratio_idc = sps->vui.aspect_ratio_idc,
.sar_width = sps->vui.sar.num,
.sar_height = sps->vui.sar.den,
.video_format = sps->vui.video_format,
.colour_primaries = sps->vui.colour_primaries,
.transfer_characteristics = sps->vui.transfer_characteristics,
.matrix_coefficients = sps->vui.matrix_coeffs,
.num_units_in_tick = sps->num_units_in_tick,
.time_scale = sps->time_scale,
.pHrdParameters = vksps_vui_header,
.max_num_reorder_frames = sps->num_reorder_frames,
.max_dec_frame_buffering = sps->max_dec_frame_buffering,
.flags = (StdVideoH264SpsVuiFlags) {
.aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
.overscan_info_present_flag = sps->vui.overscan_info_present_flag,
.overscan_appropriate_flag = sps->vui.overscan_appropriate_flag,
.video_signal_type_present_flag = sps->vui.video_signal_type_present_flag,
.video_full_range_flag = sps->vui.video_full_range_flag,
.color_description_present_flag = sps->vui.colour_description_present_flag,
.chroma_loc_info_present_flag = sps->vui.chroma_location,
.timing_info_present_flag = sps->timing_info_present_flag,
.fixed_frame_rate_flag = sps->fixed_frame_rate_flag,
.bitstream_restriction_flag = sps->bitstream_restriction_flag,
.nal_hrd_parameters_present_flag = sps->nal_hrd_parameters_present_flag,
.vcl_hrd_parameters_present_flag = sps->vcl_hrd_parameters_present_flag,
},
};
*vksps = (StdVideoH264SequenceParameterSet) {
.profile_idc = sps->profile_idc,
.level_idc = convert_to_vk_level_idc(sps->level_idc),
.seq_parameter_set_id = sps->sps_id,
.chroma_format_idc = sps->chroma_format_idc,
.bit_depth_luma_minus8 = sps->bit_depth_luma - 8,
.bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8,
.log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4,
.pic_order_cnt_type = sps->poc_type,
.log2_max_pic_order_cnt_lsb_minus4 = sps->poc_type ? 0 : sps->log2_max_poc_lsb - 4,
.offset_for_non_ref_pic = sps->offset_for_non_ref_pic,
.offset_for_top_to_bottom_field = sps->offset_for_top_to_bottom_field,
.num_ref_frames_in_pic_order_cnt_cycle = sps->poc_cycle_length,
.max_num_ref_frames = sps->ref_frame_count,
.pic_width_in_mbs_minus1 = sps->mb_width - 1,
.pic_height_in_map_units_minus1 = (sps->mb_height/(2 - sps->frame_mbs_only_flag)) - 1,
.frame_crop_left_offset = sps->crop_left,
.frame_crop_right_offset = sps->crop_right,
.frame_crop_top_offset = sps->crop_top,
.frame_crop_bottom_offset = sps->crop_bottom,
.flags = (StdVideoH264SpsFlags) {
.constraint_set0_flag = (sps->constraint_set_flags >> 0) & 0x1,
.constraint_set1_flag = (sps->constraint_set_flags >> 1) & 0x1,
.constraint_set2_flag = (sps->constraint_set_flags >> 2) & 0x1,
.constraint_set3_flag = (sps->constraint_set_flags >> 3) & 0x1,
.constraint_set4_flag = (sps->constraint_set_flags >> 4) & 0x1,
.constraint_set5_flag = (sps->constraint_set_flags >> 5) & 0x1,
.direct_8x8_inference_flag = sps->direct_8x8_inference_flag,
.mb_adaptive_frame_field_flag = sps->mb_aff,
.frame_mbs_only_flag = sps->frame_mbs_only_flag,
.delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag,
.separate_colour_plane_flag = sps->residual_color_transform_flag,
.gaps_in_frame_num_value_allowed_flag = sps->gaps_in_frame_num_allowed_flag,
.qpprime_y_zero_transform_bypass_flag = sps->transform_bypass,
.frame_cropping_flag = sps->crop,
.seq_scaling_matrix_present_flag = sps->scaling_matrix_present,
.vui_parameters_present_flag = sps->vui_parameters_present_flag,
},
.pOffsetForRefFrame = sps->offset_for_ref_frame,
.pScalingLists = vksps_scaling,
.pSequenceParameterSetVui = vksps_vui,
};
}
static void set_pps(const PPS *pps, const SPS *sps,
StdVideoH264ScalingLists *vkpps_scaling,
StdVideoH264PictureParameterSet *vkpps)
{
*vkpps_scaling = (StdVideoH264ScalingLists) {
.scaling_list_present_mask = pps->pic_scaling_matrix_present_mask,
.use_default_scaling_matrix_mask = 0, /* We already fill in the default matrix */
};
for (int i = 0; i < STD_VIDEO_H264_SCALING_LIST_4X4_NUM_LISTS; i++)
for (int j = 0; j < STD_VIDEO_H264_SCALING_LIST_4X4_NUM_ELEMENTS; j++)
vkpps_scaling->ScalingList4x4[i][j] = pps->scaling_matrix4[i][ff_zigzag_scan[j]];
for (int i = 0; i < STD_VIDEO_H264_SCALING_LIST_8X8_NUM_LISTS; i++)
for (int j = 0; j < STD_VIDEO_H264_SCALING_LIST_8X8_NUM_ELEMENTS; j++)
vkpps_scaling->ScalingList8x8[i][j] =
pps->scaling_matrix8[h264_scaling_list8_order[i]][ff_zigzag_direct[j]];
*vkpps = (StdVideoH264PictureParameterSet) {
.seq_parameter_set_id = pps->sps_id,
.pic_parameter_set_id = pps->pps_id,
.num_ref_idx_l0_default_active_minus1 = pps->ref_count[0] - 1,
.num_ref_idx_l1_default_active_minus1 = pps->ref_count[1] - 1,
.weighted_bipred_idc = pps->weighted_bipred_idc,
.pic_init_qp_minus26 = pps->init_qp - 26,
.pic_init_qs_minus26 = pps->init_qs - 26,
.chroma_qp_index_offset = pps->chroma_qp_index_offset[0],
.second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1],
.flags = (StdVideoH264PpsFlags) {
.transform_8x8_mode_flag = pps->transform_8x8_mode,
.redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present,
.constrained_intra_pred_flag = pps->constrained_intra_pred,
.deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present,
.weighted_pred_flag = pps->weighted_pred,
.bottom_field_pic_order_in_frame_present_flag = pps->pic_order_present,
.entropy_coding_mode_flag = pps->cabac,
.pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
},
.pScalingLists = vkpps_scaling,
};
}
static int vk_h264_create_params(AVCodecContext *avctx, AVBufferRef **buf)
{
int err;
FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
FFVulkanDecodeShared *ctx = dec->shared_ctx;
const H264Context *h = avctx->priv_data;
/* SPS */
StdVideoH264ScalingLists vksps_scaling[MAX_SPS_COUNT];
StdVideoH264HrdParameters vksps_vui_header[MAX_SPS_COUNT];
StdVideoH264SequenceParameterSetVui vksps_vui[MAX_SPS_COUNT];
StdVideoH264SequenceParameterSet vksps[MAX_SPS_COUNT];
/* PPS */
StdVideoH264ScalingLists vkpps_scaling[MAX_PPS_COUNT];
StdVideoH264PictureParameterSet vkpps[MAX_PPS_COUNT];
VkVideoDecodeH264SessionParametersAddInfoKHR h264_params_info = {
.sType = VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_SESSION_PARAMETERS_ADD_INFO_KHR,
.pStdSPSs = vksps,
.stdSPSCount = 0,
.pStdPPSs = vkpps,
.stdPPSCount = 0,
};
VkVideoDecodeH264SessionParametersCreateInfoKHR h264_params = {
.sType = VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_SESSION_PARAMETERS_CREATE_INFO_KHR,
.pParametersAddInfo = &h264_params_info,
};
VkVideoSessionParametersCreateInfoKHR session_params_create = {
.sType = VK_STRUCTURE_TYPE_VIDEO_SESSION_PARAMETERS_CREATE_INFO_KHR,
.pNext = &h264_params,
.videoSession = ctx->common.session,
.videoSessionParametersTemplate = NULL,
};
/* SPS list */
for (int i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
if (h->ps.sps_list[i]) {
const SPS *sps_l = h->ps.sps_list[i];
int idx = h264_params_info.stdSPSCount;
set_sps(sps_l, &vksps_scaling[idx], &vksps_vui_header[idx], &vksps_vui[idx], &vksps[idx]);
h264_params_info.stdSPSCount++;
}
}
/* PPS list */
for (int i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
if (h->ps.pps_list[i]) {
const PPS *pps_l = h->ps.pps_list[i];
int idx = h264_params_info.stdPPSCount;
set_pps(pps_l, pps_l->sps, &vkpps_scaling[idx], &vkpps[idx]);
h264_params_info.stdPPSCount++;
}
}
h264_params.maxStdSPSCount = h264_params_info.stdSPSCount;
h264_params.maxStdPPSCount = h264_params_info.stdPPSCount;
err = ff_vk_decode_create_params(buf, avctx, ctx, &session_params_create);
if (err < 0)
return err;
av_log(avctx, AV_LOG_DEBUG, "Created frame parameters: %i SPS %i PPS\n",
h264_params_info.stdSPSCount, h264_params_info.stdPPSCount);
return 0;
}
static int vk_h264_start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
int err;
int dpb_slot_index = 0;
H264Context *h = avctx->priv_data;
H264Picture *pic = h->cur_pic_ptr;
FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
H264VulkanDecodePicture *hp = pic->hwaccel_picture_private;
FFVulkanDecodePicture *vp = &hp->vp;
if (!dec->session_params) {
err = vk_h264_create_params(avctx, &dec->session_params);
if (err < 0)
return err;
}
/* Fill in main slot */
dpb_slot_index = 0;
for (unsigned slot = 0; slot < H264_MAX_PICTURE_COUNT; slot++) {
if (pic == &h->DPB[slot]) {
dpb_slot_index = slot;
break;
}
}
err = vk_h264_fill_pict(avctx, NULL, &vp->ref_slot, &vp->ref,
&hp->vkh264_ref, &hp->h264_ref, pic, 1,
h->DPB[dpb_slot_index].field_picture,
h->DPB[dpb_slot_index].reference,
dpb_slot_index);
if (err < 0)
return err;
/* Fill in short-term references */
for (int i = 0; i < h->short_ref_count; i++) {
dpb_slot_index = 0;
for (unsigned slot = 0; slot < H264_MAX_PICTURE_COUNT; slot++) {
if (h->short_ref[i] == &h->DPB[slot]) {
dpb_slot_index = slot;
break;
}
}
err = vk_h264_fill_pict(avctx, &hp->ref_src[i], &vp->ref_slots[i],
&vp->refs[i], &hp->vkh264_refs[i],
&hp->h264_refs[i], h->short_ref[i], 0,
h->DPB[dpb_slot_index].field_picture,
h->DPB[dpb_slot_index].reference,
dpb_slot_index);
if (err < 0)
return err;
}
/* Fill in long-term refs */
for (int r = 0, i = h->short_ref_count; r < H264_MAX_DPB_FRAMES &&
i < h->short_ref_count + h->long_ref_count; r++) {
if (!h->long_ref[r])
continue;
dpb_slot_index = 0;
for (unsigned slot = 0; slot < 16; slot++) {
if (h->long_ref[r] == &h->DPB[slot]) {
dpb_slot_index = slot;
break;
}
}
err = vk_h264_fill_pict(avctx, &hp->ref_src[i], &vp->ref_slots[i],
&vp->refs[i], &hp->vkh264_refs[i],
&hp->h264_refs[i], h->long_ref[r], 0,
h->DPB[dpb_slot_index].field_picture,
h->DPB[dpb_slot_index].reference,
dpb_slot_index);
if (err < 0)
return err;
i++;
}
hp->h264pic = (StdVideoDecodeH264PictureInfo) {
.seq_parameter_set_id = pic->pps->sps_id,
.pic_parameter_set_id = pic->pps->pps_id,
.frame_num = 0, /* Set later */
.idr_pic_id = 0, /* Set later */
.PicOrderCnt[0] = pic->field_poc[0],
.PicOrderCnt[1] = pic->field_poc[1],
.flags = (StdVideoDecodeH264PictureInfoFlags) {
.field_pic_flag = FIELD_PICTURE(h),
.is_intra = 1, /* Set later */
.IdrPicFlag = h->picture_idr,
.bottom_field_flag = h->picture_structure != PICT_FRAME &&
h->picture_structure & PICT_BOTTOM_FIELD,
.is_reference = h->nal_ref_idc != 0,
.complementary_field_pair = h->first_field && FIELD_PICTURE(h),
},
};
hp->h264_pic_info = (VkVideoDecodeH264PictureInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_PICTURE_INFO_KHR,
.pStdPictureInfo = &hp->h264pic,
};
vp->decode_info = (VkVideoDecodeInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_DECODE_INFO_KHR,
.pNext = &hp->h264_pic_info,
.flags = 0x0,
.pSetupReferenceSlot = &vp->ref_slot,
.referenceSlotCount = h->short_ref_count + h->long_ref_count,
.pReferenceSlots = vp->ref_slots,
.dstPictureResource = (VkVideoPictureResourceInfoKHR) {
.sType = VK_STRUCTURE_TYPE_VIDEO_PICTURE_RESOURCE_INFO_KHR,
.codedOffset = (VkOffset2D){ 0, 0 },
.codedExtent = (VkExtent2D){ pic->f->width, pic->f->height },
.baseArrayLayer = 0,
.imageViewBinding = vp->img_view_out,
},
};
return 0;
}
static int vk_h264_decode_slice(AVCodecContext *avctx,
const uint8_t *data,
uint32_t size)
{
const H264Context *h = avctx->priv_data;
const H264SliceContext *sl = &h->slice_ctx[0];
H264VulkanDecodePicture *hp = h->cur_pic_ptr->hwaccel_picture_private;
FFVulkanDecodePicture *vp = &hp->vp;
int err = ff_vk_decode_add_slice(avctx, vp, data, size, 1,
&hp->h264_pic_info.sliceCount,
&hp->h264_pic_info.pSliceOffsets);
if (err < 0)
return err;
hp->h264pic.frame_num = sl->frame_num;
hp->h264pic.idr_pic_id = sl->idr_pic_id;
/* Frame is only intra of all slices are marked as intra */
if (sl->slice_type != AV_PICTURE_TYPE_I && sl->slice_type != AV_PICTURE_TYPE_SI)
hp->h264pic.flags.is_intra = 0;
return 0;
}
static int vk_h264_end_frame(AVCodecContext *avctx)
{
const H264Context *h = avctx->priv_data;
H264Picture *pic = h->cur_pic_ptr;
H264VulkanDecodePicture *hp = pic->hwaccel_picture_private;
FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
FFVulkanDecodePicture *vp = &hp->vp;
FFVulkanDecodePicture *rvp[H264_MAX_PICTURE_COUNT] = { 0 };
AVFrame *rav[H264_MAX_PICTURE_COUNT] = { 0 };
if (!hp->h264_pic_info.sliceCount)
return 0;
if (!vp->slices_buf)
return AVERROR(EINVAL);
if (!dec->session_params) {
int err = vk_h264_create_params(avctx, &dec->session_params);
if (err < 0)
return err;
hp->h264pic.seq_parameter_set_id = pic->pps->sps_id;
hp->h264pic.pic_parameter_set_id = pic->pps->pps_id;
}
for (int i = 0; i < vp->decode_info.referenceSlotCount; i++) {
H264Picture *rp = hp->ref_src[i];
H264VulkanDecodePicture *rhp = rp->hwaccel_picture_private;
rvp[i] = &rhp->vp;
rav[i] = hp->ref_src[i]->f;
}
av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %"SIZE_SPECIFIER" bytes, %i slices\n",
vp->slices_size, hp->h264_pic_info.sliceCount);
return ff_vk_decode_frame(avctx, pic->f, vp, rav, rvp);
}
static void vk_h264_free_frame_priv(FFRefStructOpaque _hwctx, void *data)
{
AVHWDeviceContext *hwctx = _hwctx.nc;
H264VulkanDecodePicture *hp = data;
/* Free frame resources, this also destroys the session parameters. */
ff_vk_decode_free_frame(hwctx, &hp->vp);
}
const FFHWAccel ff_h264_vulkan_hwaccel = {
.p.name = "h264_vulkan",
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_H264,
.p.pix_fmt = AV_PIX_FMT_VULKAN,
.start_frame = &vk_h264_start_frame,
.decode_slice = &vk_h264_decode_slice,
.end_frame = &vk_h264_end_frame,
.free_frame_priv = &vk_h264_free_frame_priv,
.frame_priv_data_size = sizeof(H264VulkanDecodePicture),
.init = &ff_vk_decode_init,
.update_thread_context = &ff_vk_update_thread_context,
.decode_params = &ff_vk_params_invalidate,
.flush = &ff_vk_decode_flush,
.uninit = &ff_vk_decode_uninit,
.frame_params = &ff_vk_frame_params,
.priv_data_size = sizeof(FFVulkanDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE | HWACCEL_CAP_THREAD_SAFE,
};
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