GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/pnmenc.c Lines: 46 99 46.5 %
Date: 2021-04-20 15:25:36 Branches: 13 37 35.1 %

Line Branch Exec Source
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/*
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 * PNM image format
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 * Copyright (c) 2002, 2003 Fabrice Bellard
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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/intreadwrite.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/pixdesc.h"
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#include "avcodec.h"
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#include "internal.h"
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static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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                            const AVFrame *p, int *got_packet)
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{
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    uint8_t *bytestream, *bytestream_start, *bytestream_end;
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    int i, h, h1, c, n, linesize, ret;
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    uint8_t *ptr, *ptr1, *ptr2;
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    int size = av_image_get_buffer_size(avctx->pix_fmt,
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                                        avctx->width, avctx->height, 1);
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    if ((ret = ff_alloc_packet2(avctx, pkt, size + 200, 0)) < 0)
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        return ret;
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    bytestream_start =
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    bytestream       = pkt->data;
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    bytestream_end   = pkt->data + pkt->size;
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    h  = avctx->height;
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    h1 = h;
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    switch (avctx->pix_fmt) {
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    case AV_PIX_FMT_MONOWHITE:
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        c  = '4';
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        n  = (avctx->width + 7) >> 3;
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        break;
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    case AV_PIX_FMT_GRAY8:
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        c  = '5';
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        n  = avctx->width;
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        break;
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    case AV_PIX_FMT_GRAY16BE:
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        c  = '5';
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        n  = avctx->width * 2;
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        break;
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    case AV_PIX_FMT_RGB24:
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        c  = '6';
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        n  = avctx->width * 3;
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        break;
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    case AV_PIX_FMT_RGB48BE:
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        c  = '6';
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        n  = avctx->width * 6;
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        break;
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    case AV_PIX_FMT_YUV420P:
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        if (avctx->width & 1 || avctx->height & 1) {
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            av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
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            return AVERROR(EINVAL);
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        }
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        c  = '5';
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        n  = avctx->width;
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        h1 = (h * 3) / 2;
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        break;
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    case AV_PIX_FMT_YUV420P16BE:
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        c  = '5';
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        n  = avctx->width * 2;
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        h1 = (h * 3) / 2;
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        break;
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    case AV_PIX_FMT_GBRPF32:
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        c  = 'F';
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        n  = avctx->width * 4;
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        break;
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    default:
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        return -1;
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    }
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    snprintf(bytestream, bytestream_end - bytestream,
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             "P%c\n%d %d\n", c, avctx->width, h1);
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    bytestream += strlen(bytestream);
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    if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32)
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        snprintf(bytestream, bytestream_end - bytestream,
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                 "%f\n", avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ? 1.f: -1.f);
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    bytestream += strlen(bytestream);
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    if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE &&
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        avctx->pix_fmt != AV_PIX_FMT_GBRPF32) {
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        int maxdepth = (1 << av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth) - 1;
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        snprintf(bytestream, bytestream_end - bytestream,
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                 "%d\n", maxdepth);
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        bytestream += strlen(bytestream);
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    }
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    if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32) {
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        float *r = (float *)p->data[2];
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        float *g = (float *)p->data[0];
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        float *b = (float *)p->data[1];
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        for (int i = 0; i < avctx->height; i++) {
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            for (int j = 0; j < avctx->width; j++) {
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                AV_WN32(bytestream + 0, av_float2int(r[j]));
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                AV_WN32(bytestream + 4, av_float2int(g[j]));
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                AV_WN32(bytestream + 8, av_float2int(b[j]));
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                bytestream += 12;
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            }
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            r += p->linesize[2] / 4;
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            g += p->linesize[0] / 4;
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            b += p->linesize[1] / 4;
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        }
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    } else {
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    ptr      = p->data[0];
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    linesize = p->linesize[0];
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    for (i = 0; i < h; i++) {
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        memcpy(bytestream, ptr, n);
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        bytestream += n;
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        ptr        += linesize;
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    }
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    }
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    if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
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        h >>= 1;
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        n >>= 1;
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        ptr1 = p->data[1];
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        ptr2 = p->data[2];
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        for (i = 0; i < h; i++) {
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            memcpy(bytestream, ptr1, n);
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            bytestream += n;
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            memcpy(bytestream, ptr2, n);
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            bytestream += n;
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                ptr1 += p->linesize[1];
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                ptr2 += p->linesize[2];
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        }
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    }
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    pkt->size   = bytestream - bytestream_start;
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    pkt->flags |= AV_PKT_FLAG_KEY;
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    *got_packet = 1;
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    return 0;
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}
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static av_cold int pnm_encode_init(AVCodecContext *avctx)
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{
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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
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    avctx->coded_frame->key_frame = 1;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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    return 0;
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}
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#if CONFIG_PGM_ENCODER
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AVCodec ff_pgm_encoder = {
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    .name           = "pgm",
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    .long_name      = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_PGM,
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    .init           = pnm_encode_init,
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    .encode2        = pnm_encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]){
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        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
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    },
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    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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#if CONFIG_PGMYUV_ENCODER
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AVCodec ff_pgmyuv_encoder = {
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    .name           = "pgmyuv",
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    .long_name      = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_PGMYUV,
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    .init           = pnm_encode_init,
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    .encode2        = pnm_encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]){
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        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
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    },
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    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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#if CONFIG_PPM_ENCODER
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AVCodec ff_ppm_encoder = {
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    .name           = "ppm",
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    .long_name      = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_PPM,
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    .init           = pnm_encode_init,
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    .encode2        = pnm_encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]){
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        AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
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    },
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    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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#if CONFIG_PBM_ENCODER
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AVCodec ff_pbm_encoder = {
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    .name           = "pbm",
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    .long_name      = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_PBM,
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    .init           = pnm_encode_init,
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    .encode2        = pnm_encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
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                                                  AV_PIX_FMT_NONE },
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    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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#if CONFIG_PFM_ENCODER
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AVCodec ff_pfm_encoder = {
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    .name           = "pfm",
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    .long_name      = NULL_IF_CONFIG_SMALL("PFM (Portable FloatMap) image"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_PFM,
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    .init           = pnm_encode_init,
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    .encode2        = pnm_encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_GBRPF32,
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                                                    AV_PIX_FMT_NONE },
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    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif