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/*

 * Video Decode and Presentation API for UNIX (VDPAU) is used for

 * HW decode acceleration for MPEG-1/2, MPEG-4 ASP, H.264 and VC-1.

 *

 * Copyright (c) 2008 NVIDIA

 *

 * 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 

#include "avcodec.h"

#include "h264.h"

#include "vc1.h"

#undef NDEBUG

#include 

#include "vdpau.h"

#include "vdpau_internal.h"

/**

 * @addtogroup VDPAU_Decoding

 *

 * @{

 */

AVVDPAUContext *av_alloc_vdpaucontext(void)

{

    return av_mallocz(sizeof(AVVDPAUContext));

}

MAKE_ACCESSORS(AVVDPAUContext, vdpau_hwaccel, AVVDPAU_Render2, render2)

int ff_vdpau_common_start_frame(Picture *pic,

                                av_unused const uint8_t *buffer,

                                av_unused uint32_t size)

{

    struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;

    pic_ctx->bitstream_buffers_allocated = 0;

    pic_ctx->bitstream_buffers_used      = 0;

    pic_ctx->bitstream_buffers           = NULL;

    return 0;

}

#if CONFIG_H263_VDPAU_HWACCEL  || CONFIG_MPEG1_VDPAU_HWACCEL || \

    CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \

    CONFIG_VC1_VDPAU_HWACCEL   || CONFIG_WMV3_VDPAU_HWACCEL

int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)

{

    int res = 0;

    AVVDPAUContext *hwctx = avctx->hwaccel_context;

    MpegEncContext *s = avctx->priv_data;

    Picture *pic = s->current_picture_ptr;

    struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;

    VdpVideoSurface surf = ff_vdpau_get_surface_id(pic);

    if (!hwctx->render) {

        res = hwctx->render2(avctx, &pic->f, (void *)&pic_ctx->info,

                             pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);

    } else

    hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,

                  pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);

    ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);

    av_freep(&pic_ctx->bitstream_buffers);

    return res;

}

#endif

int ff_vdpau_add_buffer(Picture *pic, const uint8_t *buf, uint32_t size)

{

    struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;

    VdpBitstreamBuffer *buffers = pic_ctx->bitstream_buffers;

    buffers = av_fast_realloc(buffers, &pic_ctx->bitstream_buffers_allocated,

                              (pic_ctx->bitstream_buffers_used + 1) * sizeof(*buffers));

    if (!buffers)

        return AVERROR(ENOMEM);

    pic_ctx->bitstream_buffers = buffers;

    buffers += pic_ctx->bitstream_buffers_used++;

    buffers->struct_version  = VDP_BITSTREAM_BUFFER_VERSION;

    buffers->bitstream       = buf;

    buffers->bitstream_bytes = size;

    return 0;

}

/* Obsolete non-hwaccel VDPAU support below... */

void ff_vdpau_h264_set_reference_frames(H264Context *h)

{

    struct vdpau_render_state *render, *render_ref;

    VdpReferenceFrameH264 *rf, *rf2;

    Picture *pic;

    int i, list, pic_frame_idx;

    render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];

    assert(render);

    rf = &render->info.h264.referenceFrames[0];

#define H264_RF_COUNT FF_ARRAY_ELEMS(render->info.h264.referenceFrames)

    for (list = 0; list < 2; ++list) {

        Picture **lp = list ? h->long_ref : h->short_ref;

        int ls = list ? 16 : h->short_ref_count;

        for (i = 0; i < ls; ++i) {

            pic = lp[i];

            if (!pic || !pic->reference)

                continue;

            pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;

            render_ref = (struct vdpau_render_state *)pic->f.data[0];

            assert(render_ref);

            rf2 = &render->info.h264.referenceFrames[0];

            while (rf2 != rf) {

                if (

                    (rf2->surface == render_ref->surface)

                    && (rf2->is_long_term == pic->long_ref)

                    && (rf2->frame_idx == pic_frame_idx)

                )

                    break;

                ++rf2;

            }

            if (rf2 != rf) {

                rf2->top_is_reference    |= (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;

                rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;

                continue;

            }

            if (rf >= &render->info.h264.referenceFrames[H264_RF_COUNT])

                continue;

            rf->surface             = render_ref->surface;

            rf->is_long_term        = pic->long_ref;

            rf->top_is_reference    = (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;

            rf->bottom_is_reference = (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;

            rf->field_order_cnt[0]  = pic->field_poc[0];

            rf->field_order_cnt[1]  = pic->field_poc[1];

            rf->frame_idx           = pic_frame_idx;

            ++rf;

        }

    }

    for (; rf < &render->info.h264.referenceFrames[H264_RF_COUNT]; ++rf) {

        rf->surface             = VDP_INVALID_HANDLE;

        rf->is_long_term        = 0;

        rf->top_is_reference    = 0;

        rf->bottom_is_reference = 0;

        rf->field_order_cnt[0]  = 0;

        rf->field_order_cnt[1]  = 0;

        rf->frame_idx           = 0;

    }

}

void ff_vdpau_add_data_chunk(uint8_t *data, const uint8_t *buf, int buf_size)

{

    struct vdpau_render_state *render = (struct vdpau_render_state*)data;

    assert(render);

    render->bitstream_buffers= av_fast_realloc(

        render->bitstream_buffers,

        &render->bitstream_buffers_allocated,

        sizeof(*render->bitstream_buffers)*(render->bitstream_buffers_used + 1)

    );

    render->bitstream_buffers[render->bitstream_buffers_used].struct_version  = VDP_BITSTREAM_BUFFER_VERSION;

    render->bitstream_buffers[render->bitstream_buffers_used].bitstream       = buf;

    render->bitstream_buffers[render->bitstream_buffers_used].bitstream_bytes = buf_size;

    render->bitstream_buffers_used++;

}

#if CONFIG_H264_VDPAU_DECODER

void ff_vdpau_h264_picture_start(H264Context *h)

{

    struct vdpau_render_state *render;

    int i;

    render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];

    assert(render);

    for (i = 0; i < 2; ++i) {

        int foc = h->cur_pic_ptr->field_poc[i];

        if (foc == INT_MAX)

            foc = 0;

        render->info.h264.field_order_cnt[i] = foc;

    }

    render->info.h264.frame_num = h->frame_num;

}

void ff_vdpau_h264_picture_complete(H264Context *h)

{

    struct vdpau_render_state *render;

    render = (struct vdpau_render_state *)h->cur_pic_ptr->f.data[0];

    assert(render);

    render->info.h264.slice_count = h->slice_num;

    if (render->info.h264.slice_count < 1)

        return;

    render->info.h264.is_reference                           = (h->cur_pic_ptr->reference & 3) ? VDP_TRUE : VDP_FALSE;

    render->info.h264.field_pic_flag                         = h->picture_structure != PICT_FRAME;

    render->info.h264.bottom_field_flag                      = h->picture_structure == PICT_BOTTOM_FIELD;

    render->info.h264.num_ref_frames                         = h->sps.ref_frame_count;

    render->info.h264.mb_adaptive_frame_field_flag           = h->sps.mb_aff && !render->info.h264.field_pic_flag;

    render->info.h264.constrained_intra_pred_flag            = h->pps.constrained_intra_pred;

    render->info.h264.weighted_pred_flag                     = h->pps.weighted_pred;

    render->info.h264.weighted_bipred_idc                    = h->pps.weighted_bipred_idc;

    render->info.h264.frame_mbs_only_flag                    = h->sps.frame_mbs_only_flag;

    render->info.h264.transform_8x8_mode_flag                = h->pps.transform_8x8_mode;

    render->info.h264.chroma_qp_index_offset                 = h->pps.chroma_qp_index_offset[0];

    render->info.h264.second_chroma_qp_index_offset          = h->pps.chroma_qp_index_offset[1];

    render->info.h264.pic_init_qp_minus26                    = h->pps.init_qp - 26;

    render->info.h264.num_ref_idx_l0_active_minus1           = h->pps.ref_count[0] - 1;

    render->info.h264.num_ref_idx_l1_active_minus1           = h->pps.ref_count[1] - 1;

    render->info.h264.log2_max_frame_num_minus4              = h->sps.log2_max_frame_num - 4;

    render->info.h264.pic_order_cnt_type                     = h->sps.poc_type;

    render->info.h264.log2_max_pic_order_cnt_lsb_minus4      = h->sps.poc_type ? 0 : h->sps.log2_max_poc_lsb - 4;

    render->info.h264.delta_pic_order_always_zero_flag       = h->sps.delta_pic_order_always_zero_flag;

    render->info.h264.direct_8x8_inference_flag              = h->sps.direct_8x8_inference_flag;

    render->info.h264.entropy_coding_mode_flag               = h->pps.cabac;

    render->info.h264.pic_order_present_flag                 = h->pps.pic_order_present;

    render->info.h264.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;

    render->info.h264.redundant_pic_cnt_present_flag         = h->pps.redundant_pic_cnt_present;

    memcpy(render->info.h264.scaling_lists_4x4, h->pps.scaling_matrix4, sizeof(render->info.h264.scaling_lists_4x4));

    memcpy(render->info.h264.scaling_lists_8x8[0], h->pps.scaling_matrix8[0], sizeof(render->info.h264.scaling_lists_8x8[0]));

    memcpy(render->info.h264.scaling_lists_8x8[1], h->pps.scaling_matrix8[3], sizeof(render->info.h264.scaling_lists_8x8[0]));

    ff_h264_draw_horiz_band(h, 0, h->avctx->height);

    render->bitstream_buffers_used = 0;

}

#endif /* CONFIG_H264_VDPAU_DECODER */

#if CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER

void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,

                                    int buf_size, int slice_count)

{

    struct vdpau_render_state *render, *last, *next;

    int i;

    if (!s->current_picture_ptr) return;

    render = (struct vdpau_render_state *)s->current_picture_ptr->f.data[0];

    assert(render);

    /* fill VdpPictureInfoMPEG1Or2 struct */

    render->info.mpeg.picture_structure          = s->picture_structure;

    render->info.mpeg.picture_coding_type        = s->pict_type;

    render->info.mpeg.intra_dc_precision         = s->intra_dc_precision;

    render->info.mpeg.frame_pred_frame_dct       = s->frame_pred_frame_dct;

    render->info.mpeg.concealment_motion_vectors = s->concealment_motion_vectors;

    render->info.mpeg.intra_vlc_format           = s->intra_vlc_format;

    render->info.mpeg.alternate_scan             = s->alternate_scan;

    render->info.mpeg.q_scale_type               = s->q_scale_type;

    render->info.mpeg.top_field_first            = s->top_field_first;

    render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2

    render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2

    render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.

    render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];

    render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];

    render->info.mpeg.f_code[1][1]               = s->mpeg_f_code[1][1];

    for (i = 0; i < 64; ++i) {

        render->info.mpeg.intra_quantizer_matrix[i]     = s->intra_matrix[i];

        render->info.mpeg.non_intra_quantizer_matrix[i] = s->inter_matrix[i];

    }

    render->info.mpeg.forward_reference          = VDP_INVALID_HANDLE;

    render->info.mpeg.backward_reference         = VDP_INVALID_HANDLE;

    switch(s->pict_type){

    case  AV_PICTURE_TYPE_B:

        next = (struct vdpau_render_state *)s->next_picture.f.data[0];

        assert(next);

        render->info.mpeg.backward_reference     = next->surface;

        // no return here, going to set forward prediction

    case  AV_PICTURE_TYPE_P:

        last = (struct vdpau_render_state *)s->last_picture.f.data[0];

        if (!last) // FIXME: Does this test make sense?

            last = render; // predict second field from the first

        render->info.mpeg.forward_reference      = last->surface;

    }

    ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);

    render->info.mpeg.slice_count                = slice_count;

    if (slice_count)

        ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);

    render->bitstream_buffers_used               = 0;

}

#endif /* CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER */

#if CONFIG_VC1_VDPAU_DECODER

void ff_vdpau_vc1_decode_picture(MpegEncContext *s, const uint8_t *buf,

                                 int buf_size)

{

    VC1Context *v = s->avctx->priv_data;

    struct vdpau_render_state *render, *last, *next;

    render = (struct vdpau_render_state *)s->current_picture.f.data[0];

    assert(render);

    /*  fill LvPictureInfoVC1 struct */

    render->info.vc1.frame_coding_mode  = v->fcm ? v->fcm + 1 : 0;

    render->info.vc1.postprocflag       = v->postprocflag;

    render->info.vc1.pulldown           = v->broadcast;

    render->info.vc1.interlace          = v->interlace;

    render->info.vc1.tfcntrflag         = v->tfcntrflag;

    render->info.vc1.finterpflag        = v->finterpflag;

    render->info.vc1.psf                = v->psf;

    render->info.vc1.dquant             = v->dquant;

    render->info.vc1.panscan_flag       = v->panscanflag;

    render->info.vc1.refdist_flag       = v->refdist_flag;

    render->info.vc1.quantizer          = v->quantizer_mode;

    render->info.vc1.extended_mv        = v->extended_mv;

    render->info.vc1.extended_dmv       = v->extended_dmv;

    render->info.vc1.overlap            = v->overlap;

    render->info.vc1.vstransform        = v->vstransform;

    render->info.vc1.loopfilter         = v->s.loop_filter;

    render->info.vc1.fastuvmc           = v->fastuvmc;

    render->info.vc1.range_mapy_flag    = v->range_mapy_flag;

    render->info.vc1.range_mapy         = v->range_mapy;

    render->info.vc1.range_mapuv_flag   = v->range_mapuv_flag;

    render->info.vc1.range_mapuv        = v->range_mapuv;

    /* Specific to simple/main profile only */

    render->info.vc1.multires           = v->multires;

    render->info.vc1.syncmarker         = v->s.resync_marker;

    render->info.vc1.rangered           = v->rangered | (v->rangeredfrm << 1);

    render->info.vc1.maxbframes         = v->s.max_b_frames;

    render->info.vc1.deblockEnable      = v->postprocflag & 1;

    render->info.vc1.pquant             = v->pq;

    render->info.vc1.forward_reference  = VDP_INVALID_HANDLE;

    render->info.vc1.backward_reference = VDP_INVALID_HANDLE;

    if (v->bi_type)

        render->info.vc1.picture_type = 4;

    else

        render->info.vc1.picture_type = s->pict_type - 1 + s->pict_type / 3;

    switch(s->pict_type){

    case  AV_PICTURE_TYPE_B:

        next = (struct vdpau_render_state *)s->next_picture.f.data[0];

        assert(next);

        render->info.vc1.backward_reference = next->surface;

        // no break here, going to set forward prediction

    case  AV_PICTURE_TYPE_P:

        last = (struct vdpau_render_state *)s->last_picture.f.data[0];

        if (!last) // FIXME: Does this test make sense?

            last = render; // predict second field from the first

        render->info.vc1.forward_reference = last->surface;

    }

    ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);

    render->info.vc1.slice_count          = 1;

    ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);

    render->bitstream_buffers_used        = 0;

}

#endif /* (CONFIG_VC1_VDPAU_DECODER */

#if CONFIG_MPEG4_VDPAU_DECODER

void ff_vdpau_mpeg4_decode_picture(MpegEncContext *s, const uint8_t *buf,

                                   int buf_size)

{

    struct vdpau_render_state *render, *last, *next;

    int i;

    if (!s->current_picture_ptr) return;

    render = (struct vdpau_render_state *)s->current_picture_ptr->f.data[0];

    assert(render);

    /* fill VdpPictureInfoMPEG4Part2 struct */

    render->info.mpeg4.trd[0]                            = s->pp_time;

    render->info.mpeg4.trb[0]                            = s->pb_time;

    render->info.mpeg4.trd[1]                            = s->pp_field_time >> 1;

    render->info.mpeg4.trb[1]                            = s->pb_field_time >> 1;

    render->info.mpeg4.vop_time_increment_resolution     = s->avctx->time_base.den;

    render->info.mpeg4.vop_coding_type                   = 0;

    render->info.mpeg4.vop_fcode_forward                 = s->f_code;

    render->info.mpeg4.vop_fcode_backward                = s->b_code;

    render->info.mpeg4.resync_marker_disable             = !s->resync_marker;

    render->info.mpeg4.interlaced                        = !s->progressive_sequence;

    render->info.mpeg4.quant_type                        = s->mpeg_quant;

    render->info.mpeg4.quarter_sample                    = s->quarter_sample;

    render->info.mpeg4.short_video_header                = s->avctx->codec->id == AV_CODEC_ID_H263;

    render->info.mpeg4.rounding_control                  = s->no_rounding;

    render->info.mpeg4.alternate_vertical_scan_flag      = s->alternate_scan;

    render->info.mpeg4.top_field_first                   = s->top_field_first;

    for (i = 0; i < 64; ++i) {

        render->info.mpeg4.intra_quantizer_matrix[i]     = s->intra_matrix[i];

        render->info.mpeg4.non_intra_quantizer_matrix[i] = s->inter_matrix[i];

    }

    render->info.mpeg4.forward_reference                 = VDP_INVALID_HANDLE;

    render->info.mpeg4.backward_reference                = VDP_INVALID_HANDLE;

    switch (s->pict_type) {

    case AV_PICTURE_TYPE_B:

        next = (struct vdpau_render_state *)s->next_picture.f.data[0];

        assert(next);

        render->info.mpeg4.backward_reference     = next->surface;

        render->info.mpeg4.vop_coding_type        = 2;

        // no break here, going to set forward prediction

    case AV_PICTURE_TYPE_P:

        last = (struct vdpau_render_state *)s->last_picture.f.data[0];

        assert(last);

        render->info.mpeg4.forward_reference      = last->surface;

    }

    ff_vdpau_add_data_chunk(s->current_picture_ptr->f.data[0], buf, buf_size);

    ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);

    render->bitstream_buffers_used = 0;

}

#endif /* CONFIG_MPEG4_VDPAU_DECODER */

/* @}*/