GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/v410dec.c Lines: 42 49 85.7 %
Date: 2020-09-25 23:16:12 Branches: 7 12 58.3 %

Line Branch Exec Source
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/*
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 * v410 decoder
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 *
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 * Copyright (c) 2011 Derek Buitenhuis
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/common.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "thread.h"
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typedef struct ThreadData {
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    AVFrame *frame;
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    uint8_t *buf;
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    int stride;
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} ThreadData;
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2
static av_cold int v410_decode_init(AVCodecContext *avctx)
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{
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2
    avctx->pix_fmt             = AV_PIX_FMT_YUV444P10;
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2
    avctx->bits_per_raw_sample = 10;
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2
    if (avctx->width & 1) {
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        if (avctx->err_recognition & AV_EF_EXPLODE) {
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            av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
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            return AVERROR_INVALIDDATA;
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        } else {
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            av_log(avctx, AV_LOG_WARNING, "v410 requires width to be even, continuing anyway.\n");
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        }
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    }
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    return 0;
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}
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static int v410_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
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{
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1
    ThreadData *td = arg;
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1
    AVFrame *pic = td->frame;
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1
    int stride = td->stride;
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1
    int thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
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1
    int slice_start = (avctx->height *  jobnr) / thread_count;
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1
    int slice_end = (avctx->height * (jobnr+1)) / thread_count;
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1
    const uint8_t *src = td->buf + stride * slice_start;
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    uint16_t *y, *u, *v;
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    uint32_t val;
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    int i, j;
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1
    y = (uint16_t*)pic->data[0] + slice_start * (pic->linesize[0] >> 1);
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1
    u = (uint16_t*)pic->data[1] + slice_start * (pic->linesize[1] >> 1);
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1
    v = (uint16_t*)pic->data[2] + slice_start * (pic->linesize[2] >> 1);
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    for (i = slice_start; i < slice_end; i++) {
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65792
        for (j = 0; j < avctx->width; j++) {
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65536
            val = AV_RL32(src);
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65536
            u[j] = (val >>  2) & 0x3FF;
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65536
            y[j] = (val >> 12) & 0x3FF;
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65536
            v[j] = (val >> 22);
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65536
            src += 4;
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        }
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        y += pic->linesize[0] >> 1;
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        u += pic->linesize[1] >> 1;
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        v += pic->linesize[2] >> 1;
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    }
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    return 0;
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}
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static int v410_decode_frame(AVCodecContext *avctx, void *data,
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                             int *got_frame, AVPacket *avpkt)
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{
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    ThreadData td;
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1
    ThreadFrame frame = { .f = data };
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1
    AVFrame *pic = data;
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1
    uint8_t *src = avpkt->data;
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    int ret;
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1
    int thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
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1
    td.stride = avctx->width * 4;
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1
    if (avpkt->size < 4 * avctx->height * avctx->width) {
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        av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
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        return AVERROR(EINVAL);
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    }
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    if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
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        return ret;
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    pic->key_frame = 1;
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1
    pic->pict_type = AV_PICTURE_TYPE_I;
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    td.buf = src;
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1
    td.frame = pic;
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1
    avctx->execute2(avctx, v410_decode_slice, &td, NULL, thread_count);
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    *got_frame = 1;
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    return avpkt->size;
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}
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AVCodec ff_v410_decoder = {
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    .name         = "v410",
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    .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
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    .type         = AVMEDIA_TYPE_VIDEO,
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    .id           = AV_CODEC_ID_V410,
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    .init         = v410_decode_init,
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    .decode       = v410_decode_frame,
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    .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS |
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                    AV_CODEC_CAP_FRAME_THREADS
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};