Beispiel #1
0
static vpx_codec_err_t vp8_decode(vpx_codec_alg_priv_t  *ctx,
                                  const uint8_t         *data,
                                  unsigned int            data_sz,
                                  void                    *user_priv,
                                  long                    deadline)
{
    vpx_codec_err_t res = VPX_CODEC_OK;
    unsigned int resolution_change = 0;
    unsigned int w, h;

    /* Determine the stream parameters. Note that we rely on peek_si to
     * validate that we have a buffer that does not wrap around the top
     * of the heap.
     */
    w = ctx->si.w;
    h = ctx->si.h;

    res = ctx->base.iface->dec.peek_si(data, data_sz, &ctx->si);

    if((res == VPX_CODEC_UNSUP_BITSTREAM) && !ctx->si.is_kf)
    {
        /* the peek function returns an error for non keyframes, however for
         * this case, it is not an error */
        res = VPX_CODEC_OK;
    }

    if(!ctx->decoder_init && !ctx->si.is_kf)
        res = VPX_CODEC_UNSUP_BITSTREAM;

    if ((ctx->si.h != h) || (ctx->si.w != w))
        resolution_change = 1;

    /* Perform deferred allocations, if required */
    if (!res && ctx->defer_alloc)
    {
        int i;

        for (i = 1; !res && i < NELEMENTS(ctx->mmaps); i++)
        {
            vpx_codec_dec_cfg_t cfg;

            cfg.w = ctx->si.w;
            cfg.h = ctx->si.h;
            ctx->mmaps[i].id = vp8_mem_req_segs[i].id;
            ctx->mmaps[i].sz = vp8_mem_req_segs[i].sz;
            ctx->mmaps[i].align = vp8_mem_req_segs[i].align;
            ctx->mmaps[i].flags = vp8_mem_req_segs[i].flags;

            if (!ctx->mmaps[i].sz)
                ctx->mmaps[i].sz = vp8_mem_req_segs[i].calc_sz(&cfg,
                                   ctx->base.init_flags);

            res = vp8_mmap_alloc(&ctx->mmaps[i]);
        }

        if (!res)
            vp8_finalize_mmaps(ctx);

        ctx->defer_alloc = 0;
    }

    /* Initialize the decoder instance on the first frame*/
    if (!res && !ctx->decoder_init)
    {
        res = vp8_validate_mmaps(&ctx->si, ctx->mmaps, ctx->base.init_flags);

        if (!res)
        {
            VP8D_CONFIG oxcf;
            struct VP8D_COMP* optr;

            oxcf.Width = ctx->si.w;
            oxcf.Height = ctx->si.h;
            oxcf.Version = 9;
            oxcf.postprocess = 0;
            oxcf.max_threads = ctx->cfg.threads;
            oxcf.error_concealment =
                (ctx->base.init_flags & VPX_CODEC_USE_ERROR_CONCEALMENT);
            oxcf.input_fragments =
                (ctx->base.init_flags & VPX_CODEC_USE_INPUT_FRAGMENTS);

            optr = vp8dx_create_decompressor(&oxcf);

            /* If postprocessing was enabled by the application and a
             * configuration has not been provided, default it.
             */
            if (!ctx->postproc_cfg_set
                    && (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
            {
                ctx->postproc_cfg.post_proc_flag =
                    VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE;
                ctx->postproc_cfg.deblocking_level = 4;
                ctx->postproc_cfg.noise_level = 0;
            }

            if (!optr)
                res = VPX_CODEC_ERROR;
            else
                ctx->pbi = optr;
        }

        ctx->decoder_init = 1;
    }

    if (!res && ctx->pbi)
    {
        if(resolution_change)
        {
            VP8D_COMP *pbi = ctx->pbi;
            VP8_COMMON *const pc = & pbi->common;
            MACROBLOCKD *const xd  = & pbi->mb;
#if CONFIG_MULTITHREAD
            int i;
#endif
            pc->Width = ctx->si.w;
            pc->Height = ctx->si.h;
            {
                int prev_mb_rows = pc->mb_rows;

                if (setjmp(pbi->common.error.jmp))
                {
                    pbi->common.error.setjmp = 0;
                    /* same return value as used in vp8dx_receive_compressed_data */
                    return -1;
                }

                pbi->common.error.setjmp = 1;

                if (pc->Width <= 0)
                {
                    pc->Width = w;
                    vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
                                       "Invalid frame width");
                }

                if (pc->Height <= 0)
                {
                    pc->Height = h;
                    vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
                                       "Invalid frame height");
                }

                if (vp8_alloc_frame_buffers(pc, pc->Width, pc->Height))
                    vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                       "Failed to allocate frame buffers");

                xd->pre = pc->yv12_fb[pc->lst_fb_idx];
                xd->dst = pc->yv12_fb[pc->new_fb_idx];

#if CONFIG_MULTITHREAD
                for (i = 0; i < pbi->allocated_decoding_thread_count; i++)
                {
                    pbi->mb_row_di[i].mbd.dst = pc->yv12_fb[pc->new_fb_idx];
                    vp8_build_block_doffsets(&pbi->mb_row_di[i].mbd);
                }
#endif
                vp8_build_block_doffsets(&pbi->mb);

                /* allocate memory for last frame MODE_INFO array */
#if CONFIG_ERROR_CONCEALMENT

                if (pbi->ec_enabled)
                {
                    /* old prev_mip was released by vp8_de_alloc_frame_buffers()
                     * called in vp8_alloc_frame_buffers() */
                    pc->prev_mip = vpx_calloc(
                                       (pc->mb_cols + 1) * (pc->mb_rows + 1),
                                       sizeof(MODE_INFO));

                    if (!pc->prev_mip)
                    {
                        vp8_de_alloc_frame_buffers(pc);
                        vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                           "Failed to allocate"
                                           "last frame MODE_INFO array");
                    }

                    pc->prev_mi = pc->prev_mip + pc->mode_info_stride + 1;

                    if (vp8_alloc_overlap_lists(pbi))
                        vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                           "Failed to allocate overlap lists "
                                           "for error concealment");
                }

#endif

#if CONFIG_MULTITHREAD
                if (pbi->b_multithreaded_rd)
                    vp8mt_alloc_temp_buffers(pbi, pc->Width, prev_mb_rows);
#else
                (void)prev_mb_rows;
#endif
            }

            pbi->common.error.setjmp = 0;

            /* required to get past the first get_free_fb() call */
            ctx->pbi->common.fb_idx_ref_cnt[0] = 0;
        }

        ctx->user_priv = user_priv;
        if (vp8dx_receive_compressed_data(ctx->pbi, data_sz, data, deadline))
        {
            VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
            res = update_error_state(ctx, &pbi->common.error);
        }
    }

    return res;
}
static vpx_codec_err_t vp8_decode(vpx_codec_alg_priv_t  *ctx,
                                  const uint8_t         *data,
                                  unsigned int            data_sz,
                                  void                    *user_priv,
                                  long                    deadline)
{
    vpx_codec_err_t res = VPX_CODEC_OK;

    ctx->img_avail = 0;

    /* Determine the stream parameters. Note that we rely on peek_si to
     * validate that we have a buffer that does not wrap around the top
     * of the heap.
     */
    if (!ctx->si.h)
        res = ctx->base.iface->dec.peek_si(data, data_sz, &ctx->si);


    /* Perform deferred allocations, if required */
    if (!res && ctx->defer_alloc)
    {
        int i;

        for (i = 1; !res && i < NELEMENTS(ctx->mmaps); i++)
        {
            vpx_codec_dec_cfg_t cfg;

            cfg.w = ctx->si.w;
            cfg.h = ctx->si.h;
            ctx->mmaps[i].id = vp8_mem_req_segs[i].id;
            ctx->mmaps[i].sz = vp8_mem_req_segs[i].sz;
            ctx->mmaps[i].align = vp8_mem_req_segs[i].align;
            ctx->mmaps[i].flags = vp8_mem_req_segs[i].flags;

            if (!ctx->mmaps[i].sz)
                ctx->mmaps[i].sz = vp8_mem_req_segs[i].calc_sz(&cfg,
                                   ctx->base.init_flags);

            res = vp8_mmap_alloc(&ctx->mmaps[i]);
        }

        if (!res)
            vp8_finalize_mmaps(ctx);

        ctx->defer_alloc = 0;
    }

    /* Initialize the decoder instance on the first frame*/
    if (!res && !ctx->decoder_init)
    {
        res = vp8_validate_mmaps(&ctx->si, ctx->mmaps, ctx->base.init_flags);

        if (!res)
        {
            VP8D_CONFIG oxcf;
            VP8D_PTR optr;

            vp8dx_initialize();

            oxcf.Width = ctx->si.w;
            oxcf.Height = ctx->si.h;
            oxcf.Version = 9;
            oxcf.postprocess = 0;
            oxcf.max_threads = ctx->cfg.threads;

            optr = vp8dx_create_decompressor(&oxcf);

            /* If postprocessing was enabled by the application and a
             * configuration has not been provided, default it.
             */
            if (!ctx->postproc_cfg_set
                && (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
            {
                ctx->postproc_cfg.post_proc_flag =
                    VP8_DEBLOCK | VP8_DEMACROBLOCK;
                ctx->postproc_cfg.deblocking_level = 4;
                ctx->postproc_cfg.noise_level = 0;
            }

            if (!optr)
                res = VPX_CODEC_ERROR;
            else
                ctx->pbi = optr;
        }

        ctx->decoder_init = 1;
    }

    if (!res && ctx->pbi)
    {
        YV12_BUFFER_CONFIG sd;
        INT64 time_stamp = 0, time_end_stamp = 0;
        vp8_ppflags_t flags = {0};

        if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
        {
            flags.post_proc_flag= ctx->postproc_cfg.post_proc_flag
#if CONFIG_POSTPROC_VISUALIZER

                                | ((ctx->dbg_color_ref_frame_flag != 0) ? VP8D_DEBUG_CLR_FRM_REF_BLKS : 0)
                                | ((ctx->dbg_color_mb_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
                                | ((ctx->dbg_color_b_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
                                | ((ctx->dbg_display_mv_flag != 0) ? VP8D_DEBUG_DRAW_MV : 0)
#endif
                                ;
            flags.deblocking_level      = ctx->postproc_cfg.deblocking_level;
            flags.noise_level           = ctx->postproc_cfg.noise_level;
#if CONFIG_POSTPROC_VISUALIZER
            flags.display_ref_frame_flag= ctx->dbg_color_ref_frame_flag;
            flags.display_mb_modes_flag = ctx->dbg_color_mb_modes_flag;
            flags.display_b_modes_flag  = ctx->dbg_color_b_modes_flag;
            flags.display_mv_flag       = ctx->dbg_display_mv_flag;
#endif
        }

        if (vp8dx_receive_compressed_data(ctx->pbi, data_sz, data, deadline))
        {
            VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
            res = update_error_state(ctx, &pbi->common.error);
        }

        if (!res && 0 == vp8dx_get_raw_frame(ctx->pbi, &sd, &time_stamp, &time_end_stamp, &flags))
        {
            /* Align width/height */
            unsigned int a_w = (sd.y_width + 15) & ~15;
            unsigned int a_h = (sd.y_height + 15) & ~15;

            vpx_img_wrap(&ctx->img, VPX_IMG_FMT_I420,
                         a_w + 2 * VP8BORDERINPIXELS,
                         a_h + 2 * VP8BORDERINPIXELS,
                         1,
                         sd.buffer_alloc);
            vpx_img_set_rect(&ctx->img,
                             VP8BORDERINPIXELS, VP8BORDERINPIXELS,
                             sd.y_width, sd.y_height);
            ctx->img.user_priv = user_priv;
            ctx->img_avail = 1;

        }
    }

    return res;
}