FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/dpx.c	Lines:	236	418	56.5 %
Date:	2021-01-21 21:11:50	Branches:	106	218	48.6 %


/*
 * DPX (.dpx) image decoder
 * Copyright (c) 2009 Jimmy Christensen
 *
 * 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 "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "libavutil/imgutils.h"
#include "libavutil/timecode.h"
#include "bytestream.h"
#include "avcodec.h"
#include "internal.h"

enum DPX_TRC {
    DPX_TRC_USER_DEFINED       = 0,
    DPX_TRC_PRINTING_DENSITY   = 1,
    DPX_TRC_LINEAR             = 2,
    DPX_TRC_LOGARITHMIC        = 3,
    DPX_TRC_UNSPECIFIED_VIDEO  = 4,
    DPX_TRC_SMPTE_274          = 5,
    DPX_TRC_ITU_R_709_4        = 6,
    DPX_TRC_ITU_R_601_625      = 7,
    DPX_TRC_ITU_R_601_525      = 8,
    DPX_TRC_SMPTE_170          = 9,
    DPX_TRC_ITU_R_624_4_PAL    = 10,
    DPX_TRC_Z_LINEAR           = 11,
    DPX_TRC_Z_HOMOGENEOUS      = 12,
};

enum DPX_COL_SPEC {
    DPX_COL_SPEC_USER_DEFINED       = 0,
    DPX_COL_SPEC_PRINTING_DENSITY   = 1,
    /* 2 = N/A */
    /* 3 = N/A */
    DPX_COL_SPEC_UNSPECIFIED_VIDEO  = 4,
    DPX_COL_SPEC_SMPTE_274          = 5,
    DPX_COL_SPEC_ITU_R_709_4        = 6,
    DPX_COL_SPEC_ITU_R_601_625      = 7,
    DPX_COL_SPEC_ITU_R_601_525      = 8,
    DPX_COL_SPEC_SMPTE_170          = 9,
    DPX_COL_SPEC_ITU_R_624_4_PAL    = 10,
    /* 11 = N/A */
    /* 12 = N/A */
};

static unsigned int read16(const uint8_t **ptr, int is_big)
{
    unsigned int temp;
    if (is_big) {
        temp = AV_RB16(*ptr);
    } else {
        temp = AV_RL16(*ptr);
    }
    *ptr += 2;
    return temp;
}

static unsigned int read32(const uint8_t **ptr, int is_big)
{
    unsigned int temp;
    if (is_big) {
        temp = AV_RB32(*ptr);
    } else {
        temp = AV_RL32(*ptr);
    }
    *ptr += 4;
    return temp;
}

static uint16_t read10in32_gray(const uint8_t **ptr, uint32_t *lbuf,
                                int *n_datum, int is_big, int shift)
{
    uint16_t temp;

    if (*n_datum)
        (*n_datum)--;
    else {
        *lbuf = read32(ptr, is_big);
        *n_datum = 2;
    }

    temp = *lbuf >> shift & 0x3FF;
    *lbuf = *lbuf >> 10;

    return temp;
}

static uint16_t read10in32(const uint8_t **ptr, uint32_t *lbuf,
                           int *n_datum, int is_big, int shift)
{
    if (*n_datum)
        (*n_datum)--;
    else {
        *lbuf = read32(ptr, is_big);
        *n_datum = 2;
    }

    *lbuf = *lbuf << 10 | *lbuf >> shift & 0x3FFFFF;

    return *lbuf & 0x3FF;
}

static uint16_t read12in32(const uint8_t **ptr, uint32_t *lbuf,
                           int *n_datum, int is_big)
{
    if (*n_datum)
        (*n_datum)--;
    else {
        *lbuf = read32(ptr, is_big);
        *n_datum = 7;
    }

    switch (*n_datum){
    case 7: return *lbuf & 0xFFF;
    case 6: return (*lbuf >> 12) & 0xFFF;
    case 5: {
            uint32_t c = *lbuf >> 24;
            *lbuf = read32(ptr, is_big);
            c |= *lbuf << 8;
            return c & 0xFFF;
            }
    case 4: return (*lbuf >> 4) & 0xFFF;
    case 3: return (*lbuf >> 16) & 0xFFF;
    case 2: {
            uint32_t c = *lbuf >> 28;
            *lbuf = read32(ptr, is_big);
            c |= *lbuf << 4;
            return c & 0xFFF;
            }
    case 1: return (*lbuf >> 8) & 0xFFF;
    default: return *lbuf >> 20;
    }
}

static int decode_frame(AVCodecContext *avctx,
                        void *data,
                        int *got_frame,
                        AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size       = avpkt->size;
    AVFrame *const p = data;
    uint8_t *ptr[AV_NUM_DATA_POINTERS];
    uint32_t header_version, version = 0;
    char creator[101];
    char input_device[33];

    unsigned int offset;
    int magic_num, endian;
    int x, y, stride, i, j, ret;
    int w, h, bits_per_color, descriptor, elements, packing;
    int yuv, color_trc, color_spec;
    int encoding, need_align = 0, unpadded_10bit = 0;

    unsigned int rgbBuffer = 0;
    int n_datum = 0;

    if (avpkt->size <= 1634) {
        av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
        return AVERROR_INVALIDDATA;
    }

    magic_num = AV_RB32(buf);
    buf += 4;

    /* Check if the files "magic number" is "SDPX" which means it uses
     * big-endian or XPDS which is for little-endian files */
    if (magic_num == AV_RL32("SDPX")) {
        endian = 0;
    } else if (magic_num == AV_RB32("SDPX")) {
        endian = 1;
    } else {
        av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
        return AVERROR_INVALIDDATA;
    }

    offset = read32(&buf, endian);
    if (avpkt->size <= offset) {
        av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
        return AVERROR_INVALIDDATA;
    }

    header_version = read32(&buf, 0);
    if (header_version == MKTAG('V','1','.','0'))
        version = 1;
    if (header_version == MKTAG('V','2','.','0'))
        version = 2;
    if (!version)
        av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
               av_fourcc2str(header_version));

    // Check encryption
    buf = avpkt->data + 660;
    ret = read32(&buf, endian);
    if (ret != 0xFFFFFFFF) {
        avpriv_report_missing_feature(avctx, "Encryption");
        av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
               "not properly decode.\n");
    }

    // Need to end in 0x304 offset from start of file
    buf = avpkt->data + 0x304;
    w = read32(&buf, endian);
    h = read32(&buf, endian);

    if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
        return ret;

    // Need to end in 0x320 to read the descriptor
    buf += 20;
    descriptor = buf[0];
    color_trc = buf[1];
    color_spec = buf[2];

    // Need to end in 0x323 to read the bits per color
    buf += 3;
    avctx->bits_per_raw_sample =
    bits_per_color = buf[0];
    buf++;
    packing = read16(&buf, endian);
    encoding = read16(&buf, endian);

    if (encoding) {
        avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
        return AVERROR_PATCHWELCOME;
    }

    buf += 820;
    avctx->sample_aspect_ratio.num = read32(&buf, endian);
    avctx->sample_aspect_ratio.den = read32(&buf, endian);
    if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
        av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
                   avctx->sample_aspect_ratio.num,  avctx->sample_aspect_ratio.den,
                  0x10000);
    else
        avctx->sample_aspect_ratio = (AVRational){ 0, 1 };

    /* preferred frame rate from Motion-picture film header */
    if (offset >= 1724 + 4) {
        buf = avpkt->data + 1724;
        i = read32(&buf, endian);
        if(i && i != 0xFFFFFFFF) {
            AVRational q = av_d2q(av_int2float(i), 4096);
            if (q.num > 0 && q.den > 0)
                avctx->framerate = q;
        }
    }

    /* alternative frame rate from television header */
    if (offset >= 1940 + 4 &&
        !(avctx->framerate.num && avctx->framerate.den)) {
        buf = avpkt->data + 1940;
        i = read32(&buf, endian);
        if(i && i != 0xFFFFFFFF) {
            AVRational q = av_d2q(av_int2float(i), 4096);
            if (q.num > 0 && q.den > 0)
                avctx->framerate = q;
        }
    }

    /* SMPTE TC from television header */
    if (offset >= 1920 + 4) {
        uint32_t tc;
        uint32_t *tc_sd;
        char tcbuf[AV_TIMECODE_STR_SIZE];

        buf = avpkt->data + 1920;
        // read32 to native endian, av_bswap32 to opposite of native for
        // compatibility with av_timecode_make_smpte_tc_string2 etc
        tc = av_bswap32(read32(&buf, endian));

        if (i != 0xFFFFFFFF) {
            AVFrameSideData *tcside =
                av_frame_new_side_data(p, AV_FRAME_DATA_S12M_TIMECODE,
                                       sizeof(uint32_t) * 4);
            if (!tcside)
                return AVERROR(ENOMEM);

            tc_sd = (uint32_t*)tcside->data;
            tc_sd[0] = 1;
            tc_sd[1] = tc;

            av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
                                              tc_sd[1], 0, 0);
            av_dict_set(&p->metadata, "timecode", tcbuf, 0);
        }
    }

    /* color range from television header */
    if (offset >= 1964 + 4) {
        buf = avpkt->data + 1952;
        i = read32(&buf, endian);

        buf = avpkt->data + 1964;
        j = read32(&buf, endian);

        if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
            float minCV, maxCV;
            minCV = av_int2float(i);
            maxCV = av_int2float(j);
            if (bits_per_color >= 1 &&
                minCV == 0.0f && maxCV == ((1<<bits_per_color) - 1)) {
                avctx->color_range = AVCOL_RANGE_JPEG;
            } else if (bits_per_color >= 8 &&
                       minCV == (1  <<(bits_per_color - 4)) &&
                       maxCV == (235<<(bits_per_color - 8))) {
                avctx->color_range = AVCOL_RANGE_MPEG;
            }
        }
    }

    switch (descriptor) {
    case 6:  // Y
        elements = 1;
        yuv = 1;
        break;
    case 50: // RGB
        elements = 3;
        yuv = 0;
        break;
    case 52: // ABGR
    case 51: // RGBA
        elements = 4;
        yuv = 0;
        break;
    case 100: // UYVY422
        elements = 2;
        yuv = 1;
        break;
    case 102: // UYV444
        elements = 3;
        yuv = 1;
        break;
    case 103: // UYVA4444
        elements = 4;
        yuv = 1;
        break;
    default:
        avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
        return AVERROR_PATCHWELCOME;
    }

    switch (bits_per_color) {
    case 8:
        stride = avctx->width * elements;
        break;
    case 10:
        if (!packing) {
            av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
            return -1;
        }
        stride = (avctx->width * elements + 2) / 3 * 4;
        break;
    case 12:
        stride = avctx->width * elements;
        if (packing) {
            stride *= 2;
        } else {
            stride *= 3;
            if (stride % 8) {
                stride /= 8;
                stride++;
                stride *= 8;
            }
            stride /= 2;
        }
        break;
    case 16:
        stride = 2 * avctx->width * elements;
        break;
    case 1:
    case 32:
    case 64:
        avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
        return AVERROR_PATCHWELCOME;
    default:
        return AVERROR_INVALIDDATA;
    }

    switch (color_trc) {
    case DPX_TRC_LINEAR:
        avctx->color_trc = AVCOL_TRC_LINEAR;
        break;
    case DPX_TRC_SMPTE_274:
    case DPX_TRC_ITU_R_709_4:
        avctx->color_trc = AVCOL_TRC_BT709;
        break;
    case DPX_TRC_ITU_R_601_625:
    case DPX_TRC_ITU_R_601_525:
    case DPX_TRC_SMPTE_170:
        avctx->color_trc = AVCOL_TRC_SMPTE170M;
        break;
    case DPX_TRC_ITU_R_624_4_PAL:
        avctx->color_trc = AVCOL_TRC_GAMMA28;
        break;
    case DPX_TRC_USER_DEFINED:
    case DPX_TRC_UNSPECIFIED_VIDEO:
        /* Nothing to do */
        break;
    default:
        av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
            "%d to color_trc.\n", color_trc);
        break;
    }

    switch (color_spec) {
    case DPX_COL_SPEC_SMPTE_274:
    case DPX_COL_SPEC_ITU_R_709_4:
        avctx->color_primaries = AVCOL_PRI_BT709;
        break;
    case DPX_COL_SPEC_ITU_R_601_625:
    case DPX_COL_SPEC_ITU_R_624_4_PAL:
        avctx->color_primaries = AVCOL_PRI_BT470BG;
        break;
    case DPX_COL_SPEC_ITU_R_601_525:
    case DPX_COL_SPEC_SMPTE_170:
        avctx->color_primaries = AVCOL_PRI_SMPTE170M;
        break;
    case DPX_COL_SPEC_USER_DEFINED:
    case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
        /* Nothing to do */
        break;
    default:
        av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
            "%d to color_primaries.\n", color_spec);
        break;
    }

    if (yuv) {
        switch (color_spec) {
        case DPX_COL_SPEC_SMPTE_274:
        case DPX_COL_SPEC_ITU_R_709_4:
            avctx->colorspace = AVCOL_SPC_BT709;
            break;
        case DPX_COL_SPEC_ITU_R_601_625:
        case DPX_COL_SPEC_ITU_R_624_4_PAL:
            avctx->colorspace = AVCOL_SPC_BT470BG;
            break;
        case DPX_COL_SPEC_ITU_R_601_525:
        case DPX_COL_SPEC_SMPTE_170:
            avctx->colorspace = AVCOL_SPC_SMPTE170M;
            break;
        case DPX_COL_SPEC_USER_DEFINED:
        case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
            /* Nothing to do */
            break;
        default:
            av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
                "%d to colorspace.\n", color_spec);
            break;
        }
    } else {
        avctx->colorspace = AVCOL_SPC_RGB;
    }

    // Table 3c: Runs will always break at scan line boundaries. Packing
    // will always break to the next 32-bit word at scan-line boundaries.
    // Unfortunately, the encoder produced invalid files, so attempt
    // to detect it
    need_align = FFALIGN(stride, 4);
    if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
        // Alignment seems unappliable, try without
        if (stride*avctx->height + (int64_t)offset > avpkt->size) {
            av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
            return AVERROR_INVALIDDATA;
        } else {
            av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
                   "alignment.\n");
            need_align = 0;
        }
    } else {
        need_align -= stride;
        stride = FFALIGN(stride, 4);
    }

    switch (1000 * descriptor + 10 * bits_per_color + endian) {
    case 6081:
    case 6080:
        avctx->pix_fmt = AV_PIX_FMT_GRAY8;
        break;
    case 6121:
    case 6120:
        avctx->pix_fmt = AV_PIX_FMT_GRAY12;
        break;
    case 50081:
    case 50080:
        avctx->pix_fmt = AV_PIX_FMT_RGB24;
        break;
    case 52081:
    case 52080:
        avctx->pix_fmt = AV_PIX_FMT_ABGR;
        break;
    case 51081:
    case 51080:
        avctx->pix_fmt = AV_PIX_FMT_RGBA;
        break;
    case 50100:
    case 50101:
        avctx->pix_fmt = AV_PIX_FMT_GBRP10;
        break;
    case 51100:
    case 51101:
        avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
        break;
    case 50120:
    case 50121:
        avctx->pix_fmt = AV_PIX_FMT_GBRP12;
        break;
    case 51120:
    case 51121:
        avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
        break;
    case 6100:
    case 6101:
        avctx->pix_fmt = AV_PIX_FMT_GRAY10;
        break;
    case 6161:
        avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
        break;
    case 6160:
        avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
        break;
    case 50161:
        avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
        break;
    case 50160:
        avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
        break;
    case 51161:
        avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
        break;
    case 51160:
        avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
        break;
    case 100081:
        avctx->pix_fmt = AV_PIX_FMT_UYVY422;
        break;
    case 102081:
        avctx->pix_fmt = AV_PIX_FMT_YUV444P;
        break;
    case 103081:
        avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
        break;
    default:
        av_log(avctx, AV_LOG_ERROR, "Unsupported format\n");
        return AVERROR_PATCHWELCOME;
    }

    ff_set_sar(avctx, avctx->sample_aspect_ratio);

    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
        return ret;

    av_strlcpy(creator, avpkt->data + 160, 100);
    creator[100] = '\0';
    av_dict_set(&p->metadata, "Creator", creator, 0);

    av_strlcpy(input_device, avpkt->data + 1556, 32);
    input_device[32] = '\0';
    av_dict_set(&p->metadata, "Input Device", input_device, 0);

    // Some devices do not pad 10bit samples to whole 32bit words per row
    if (!memcmp(input_device, "Scanity", 7) ||
        !memcmp(creator, "Lasergraphics Inc.", 18)) {
        unpadded_10bit = 1;
    }

    // Move pointer to offset from start of file
    buf =  avpkt->data + offset;

    for (i=0; i<AV_NUM_DATA_POINTERS; i++)
        ptr[i] = p->data[i];

    switch (bits_per_color) {
    case 10:
        for (x = 0; x < avctx->height; x++) {
            uint16_t *dst[4] = {(uint16_t*)ptr[0],
                                (uint16_t*)ptr[1],
                                (uint16_t*)ptr[2],
                                (uint16_t*)ptr[3]};
            int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
            for (y = 0; y < avctx->width; y++) {
                if (elements >= 3)
                    *dst[2]++ = read10in32(&buf, &rgbBuffer,
                                           &n_datum, endian, shift);
                if (elements == 1)
                    *dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
                                                &n_datum, endian, shift);
                else
                    *dst[0]++ = read10in32(&buf, &rgbBuffer,
                                           &n_datum, endian, shift);
                if (elements >= 2)
                    *dst[1]++ = read10in32(&buf, &rgbBuffer,
                                           &n_datum, endian, shift);
                if (elements == 4)
                    *dst[3]++ =
                    read10in32(&buf, &rgbBuffer,
                               &n_datum, endian, shift);
            }
            if (!unpadded_10bit)
                n_datum = 0;
            for (i = 0; i < elements; i++)
                ptr[i] += p->linesize[i];
        }
        break;
    case 12:
        for (x = 0; x < avctx->height; x++) {
            uint16_t *dst[4] = {(uint16_t*)ptr[0],
                                (uint16_t*)ptr[1],
                                (uint16_t*)ptr[2],
                                (uint16_t*)ptr[3]};
            int shift = packing == 1 ? 4 : 0;
            for (y = 0; y < avctx->width; y++) {
                if (packing) {
                    if (elements >= 3)
                        *dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
                    *dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
                    if (elements >= 2)
                        *dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
                    if (elements == 4)
                        *dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
                } else {
                    if (elements >= 3)
                        *dst[2]++ = read12in32(&buf, &rgbBuffer,
                                               &n_datum, endian);
                    *dst[0]++ = read12in32(&buf, &rgbBuffer,
                                           &n_datum, endian);
                    if (elements >= 2)
                        *dst[1]++ = read12in32(&buf, &rgbBuffer,
                                               &n_datum, endian);
                    if (elements == 4)
                        *dst[3]++ = read12in32(&buf, &rgbBuffer,
                                               &n_datum, endian);
                }
            }
            n_datum = 0;
            for (i = 0; i < elements; i++)
                ptr[i] += p->linesize[i];
            // Jump to next aligned position
            buf += need_align;
        }
        break;
    case 16:
        elements *= 2;
    case 8:
        if (   avctx->pix_fmt == AV_PIX_FMT_YUVA444P
            || avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
            for (x = 0; x < avctx->height; x++) {
                ptr[0] = p->data[0] + x * p->linesize[0];
                ptr[1] = p->data[1] + x * p->linesize[1];
                ptr[2] = p->data[2] + x * p->linesize[2];
                ptr[3] = p->data[3] + x * p->linesize[3];
                for (y = 0; y < avctx->width; y++) {
                    *ptr[1]++ = *buf++;
                    *ptr[0]++ = *buf++;
                    *ptr[2]++ = *buf++;
                    if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
                        *ptr[3]++ = *buf++;
                }
            }
        } else {
        av_image_copy_plane(ptr[0], p->linesize[0],
                            buf, stride,
                            elements * avctx->width, avctx->height);
        }
        break;
    }

    *got_frame = 1;

    return buf_size;
}

AVCodec ff_dpx_decoder = {
    .name           = "dpx",
    .long_name      = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_DPX,
    .decode         = decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* DPX (.dpx) image decoder
3			* Copyright (c) 2009 Jimmy Christensen
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			#include "libavutil/avstring.h"
23			#include "libavutil/intreadwrite.h"
24			#include "libavutil/intfloat.h"
25			#include "libavutil/imgutils.h"
26			#include "libavutil/timecode.h"
27			#include "bytestream.h"
28			#include "avcodec.h"
29			#include "internal.h"
30
31			enum DPX_TRC {
32			DPX_TRC_USER_DEFINED = 0,
33			DPX_TRC_PRINTING_DENSITY = 1,
34			DPX_TRC_LINEAR = 2,
35			DPX_TRC_LOGARITHMIC = 3,
36			DPX_TRC_UNSPECIFIED_VIDEO = 4,
37			DPX_TRC_SMPTE_274 = 5,
38			DPX_TRC_ITU_R_709_4 = 6,
39			DPX_TRC_ITU_R_601_625 = 7,
40			DPX_TRC_ITU_R_601_525 = 8,
41			DPX_TRC_SMPTE_170 = 9,
42			DPX_TRC_ITU_R_624_4_PAL = 10,
43			DPX_TRC_Z_LINEAR = 11,
44			DPX_TRC_Z_HOMOGENEOUS = 12,
45			};
46
47			enum DPX_COL_SPEC {
48			DPX_COL_SPEC_USER_DEFINED = 0,
49			DPX_COL_SPEC_PRINTING_DENSITY = 1,
50			/* 2 = N/A */
51			/* 3 = N/A */
52			DPX_COL_SPEC_UNSPECIFIED_VIDEO = 4,
53			DPX_COL_SPEC_SMPTE_274 = 5,
54			DPX_COL_SPEC_ITU_R_709_4 = 6,
55			DPX_COL_SPEC_ITU_R_601_625 = 7,
56			DPX_COL_SPEC_ITU_R_601_525 = 8,
57			DPX_COL_SPEC_SMPTE_170 = 9,
58			DPX_COL_SPEC_ITU_R_624_4_PAL = 10,
59			/* 11 = N/A */
60			/* 12 = N/A */
61			};
62
63		4257978	static unsigned int read16(const uint8_t **ptr, int is_big)
64			{
65			unsigned int temp;
66	✓✓	4257978	if (is_big) {
67		4	temp = AV_RB16(*ptr);
68			} else {
69		4257974	temp = AV_RL16(*ptr);
70			}
71		4257978	*ptr += 2;
72		4257978	return temp;
73			}
74
75		3044636	static unsigned int read32(const uint8_t **ptr, int is_big)
76			{
77			unsigned int temp;
78	✓✓	3044636	if (is_big) {
79		21	temp = AV_RB32(*ptr);
80			} else {
81		3044615	temp = AV_RL32(*ptr);
82			}
83		3044636	*ptr += 4;
84		3044636	return temp;
85			}
86
87			static uint16_t read10in32_gray(const uint8_t *ptr, uint32_t lbuf,
88			int *n_datum, int is_big, int shift)
89			{
90			uint16_t temp;
91
92			if (*n_datum)
93			(*n_datum)--;
94			else {
95			*lbuf = read32(ptr, is_big);
96			*n_datum = 2;
97			}
98
99			temp = *lbuf >> shift & 0x3FF;
100			lbuf = lbuf >> 10;
101
102			return temp;
103			}
104
105		9131904	static uint16_t read10in32(const uint8_t *ptr, uint32_t lbuf,
106			int *n_datum, int is_big, int shift)
107			{
108	✓✓	9131904	if (*n_datum)
109		6087936	(*n_datum)--;
110			else {
111		3043968	*lbuf = read32(ptr, is_big);
112		3043968	*n_datum = 2;
113			}
114
115		9131904	lbuf = lbuf << 10 \| *lbuf >> shift & 0x3FFFFF;
116
117		9131904	return *lbuf & 0x3FF;
118			}
119
120			static uint16_t read12in32(const uint8_t *ptr, uint32_t lbuf,
121			int *n_datum, int is_big)
122			{
123			if (*n_datum)
124			(*n_datum)--;
125			else {
126			*lbuf = read32(ptr, is_big);
127			*n_datum = 7;
128			}
129
130			switch (*n_datum){
131			case 7: return *lbuf & 0xFFF;
132			case 6: return (*lbuf >> 12) & 0xFFF;
133			case 5: {
134			uint32_t c = *lbuf >> 24;
135			*lbuf = read32(ptr, is_big);
136			c \|= *lbuf << 8;
137			return c & 0xFFF;
138			}
139			case 4: return (*lbuf >> 4) & 0xFFF;
140			case 3: return (*lbuf >> 16) & 0xFFF;
141			case 2: {
142			uint32_t c = *lbuf >> 28;
143			*lbuf = read32(ptr, is_big);
144			c \|= *lbuf << 4;
145			return c & 0xFFF;
146			}
147			case 1: return (*lbuf >> 8) & 0xFFF;
148			default: return *lbuf >> 20;
149			}
150			}
151
152		93	static int decode_frame(AVCodecContext *avctx,
153			void *data,
154			int *got_frame,
155			AVPacket *avpkt)
156			{
157		93	const uint8_t *buf = avpkt->data;
158		93	int buf_size = avpkt->size;
159		93	AVFrame *const p = data;
160			uint8_t *ptr[AV_NUM_DATA_POINTERS];
161		93	uint32_t header_version, version = 0;
162			char creator[101];
163			char input_device[33];
164
165			unsigned int offset;
166			int magic_num, endian;
167			int x, y, stride, i, j, ret;
168			int w, h, bits_per_color, descriptor, elements, packing;
169			int yuv, color_trc, color_spec;
170		93	int encoding, need_align = 0, unpadded_10bit = 0;
171
172		93	unsigned int rgbBuffer = 0;
173		93	int n_datum = 0;
174
175	✗✓	93	if (avpkt->size <= 1634) {
176			av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
177			return AVERROR_INVALIDDATA;
178			}
179
180		93	magic_num = AV_RB32(buf);
181		93	buf += 4;
182
183			/* Check if the files "magic number" is "SDPX" which means it uses
184			* big-endian or XPDS which is for little-endian files */
185	✓✓	93	if (magic_num == AV_RL32("SDPX")) {
186		91	endian = 0;
187	✓✗	2	} else if (magic_num == AV_RB32("SDPX")) {
188		2	endian = 1;
189			} else {
190			av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
191			return AVERROR_INVALIDDATA;
192			}
193
194		93	offset = read32(&buf, endian);
195	✗✓	93	if (avpkt->size <= offset) {
196			av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
197			return AVERROR_INVALIDDATA;
198			}
199
200		93	header_version = read32(&buf, 0);
201	✓✓	93	if (header_version == MKTAG('V','1','.','0'))
202		89	version = 1;
203	✓✓	93	if (header_version == MKTAG('V','2','.','0'))
204		4	version = 2;
205	✗✓	93	if (!version)
206			av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
207			av_fourcc2str(header_version));
208
209			// Check encryption
210		93	buf = avpkt->data + 660;
211		93	ret = read32(&buf, endian);
212	✗✓	93	if (ret != 0xFFFFFFFF) {
213			avpriv_report_missing_feature(avctx, "Encryption");
214			av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
215			"not properly decode.\n");
216			}
217
218			// Need to end in 0x304 offset from start of file
219		93	buf = avpkt->data + 0x304;
220		93	w = read32(&buf, endian);
221		93	h = read32(&buf, endian);
222
223	✗✓	93	if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
224			return ret;
225
226			// Need to end in 0x320 to read the descriptor
227		93	buf += 20;
228		93	descriptor = buf[0];
229		93	color_trc = buf[1];
230		93	color_spec = buf[2];
231
232			// Need to end in 0x323 to read the bits per color
233		93	buf += 3;
234		93	avctx->bits_per_raw_sample =
235		93	bits_per_color = buf[0];
236		93	buf++;
237		93	packing = read16(&buf, endian);
238		93	encoding = read16(&buf, endian);
239
240	✗✓	93	if (encoding) {
241			avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
242			return AVERROR_PATCHWELCOME;
243			}
244
245		93	buf += 820;
246		93	avctx->sample_aspect_ratio.num = read32(&buf, endian);
247		93	avctx->sample_aspect_ratio.den = read32(&buf, endian);
248	✓✓✓✗	93	if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
249		2	av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
250		2	avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
251			0x10000);
252			else
253		91	avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
254
255			/* preferred frame rate from Motion-picture film header */
256	✓✓	93	if (offset >= 1724 + 4) {
257		4	buf = avpkt->data + 1724;
258		4	i = read32(&buf, endian);
259	✓✓✓✗	4	if(i && i != 0xFFFFFFFF) {
260		2	AVRational q = av_d2q(av_int2float(i), 4096);
261	✓✗✓✗	2	if (q.num > 0 && q.den > 0)
262		2	avctx->framerate = q;
263			}
264			}
265
266			/* alternative frame rate from television header */
267	✓✓	93	if (offset >= 1940 + 4 &&
268	✓✓✗✓	4	!(avctx->framerate.num && avctx->framerate.den)) {
269		1	buf = avpkt->data + 1940;
270		1	i = read32(&buf, endian);
271	✗✓✗✗	1	if(i && i != 0xFFFFFFFF) {
272			AVRational q = av_d2q(av_int2float(i), 4096);
273			if (q.num > 0 && q.den > 0)
274			avctx->framerate = q;
275			}
276			}
277
278			/* SMPTE TC from television header */
279	✓✓	93	if (offset >= 1920 + 4) {
280			uint32_t tc;
281			uint32_t *tc_sd;
282			char tcbuf[AV_TIMECODE_STR_SIZE];
283
284		4	buf = avpkt->data + 1920;
285			// read32 to native endian, av_bswap32 to opposite of native for
286			// compatibility with av_timecode_make_smpte_tc_string2 etc
287		4	tc = av_bswap32(read32(&buf, endian));
288
289	✓✗	4	if (i != 0xFFFFFFFF) {
290			AVFrameSideData *tcside =
291		4	av_frame_new_side_data(p, AV_FRAME_DATA_S12M_TIMECODE,
292			sizeof(uint32_t) * 4);
293	✗✓	4	if (!tcside)
294			return AVERROR(ENOMEM);
295
296		4	tc_sd = (uint32_t*)tcside->data;
297		4	tc_sd[0] = 1;
298		4	tc_sd[1] = tc;
299
300		4	av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
301		4	tc_sd[1], 0, 0);
302		4	av_dict_set(&p->metadata, "timecode", tcbuf, 0);
303			}
304			}
305
306			/* color range from television header */
307	✓✓	93	if (offset >= 1964 + 4) {
308		4	buf = avpkt->data + 1952;
309		4	i = read32(&buf, endian);
310
311		4	buf = avpkt->data + 1964;
312		4	j = read32(&buf, endian);
313
314	✓✗✓✗	4	if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
315			float minCV, maxCV;
316		4	minCV = av_int2float(i);
317		4	maxCV = av_int2float(j);
318	✓✗✓✗	4	if (bits_per_color >= 1 &&
319	✓✓	4	minCV == 0.0f && maxCV == ((1<<bits_per_color) - 1)) {
320		2	avctx->color_range = AVCOL_RANGE_JPEG;
321	✓✗	2	} else if (bits_per_color >= 8 &&
322	✗✓	2	minCV == (1 <<(bits_per_color - 4)) &&
323			maxCV == (235<<(bits_per_color - 8))) {
324			avctx->color_range = AVCOL_RANGE_MPEG;
325			}
326			}
327			}
328
329	✗✓✓✗ ✗✗✗	93	switch (descriptor) {
330			case 6: // Y
331			elements = 1;
332			yuv = 1;
333			break;
334		79	case 50: // RGB
335		79	elements = 3;
336		79	yuv = 0;
337		79	break;
338		14	case 52: // ABGR
339			case 51: // RGBA
340		14	elements = 4;
341		14	yuv = 0;
342		14	break;
343			case 100: // UYVY422
344			elements = 2;
345			yuv = 1;
346			break;
347			case 102: // UYV444
348			elements = 3;
349			yuv = 1;
350			break;
351			case 103: // UYVA4444
352			elements = 4;
353			yuv = 1;
354			break;
355			default:
356			avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
357			return AVERROR_PATCHWELCOME;
358			}
359
360	✓✓✓✓ ✗✗	93	switch (bits_per_color) {
361		19	case 8:
362		19	stride = avctx->width * elements;
363		19	break;
364		30	case 10:
365	✗✓	30	if (!packing) {
366			av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
367			return -1;
368			}
369		30	stride = (avctx->width * elements + 2) / 3 * 4;
370		30	break;
371		14	case 12:
372		14	stride = avctx->width * elements;
373	✓✗	14	if (packing) {
374		14	stride *= 2;
375			} else {
376			stride *= 3;
377			if (stride % 8) {
378			stride /= 8;
379			stride++;
380			stride *= 8;
381			}
382			stride /= 2;
383			}
384		14	break;
385		30	case 16:
386		30	stride = 2 * avctx->width * elements;
387		30	break;
388			case 1:
389			case 32:
390			case 64:
391			avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
392			return AVERROR_PATCHWELCOME;
393			default:
394			return AVERROR_INVALIDDATA;
395			}
396
397	✓✗✗✗ ✓✓	93	switch (color_trc) {
398		89	case DPX_TRC_LINEAR:
399		89	avctx->color_trc = AVCOL_TRC_LINEAR;
400		89	break;
401			case DPX_TRC_SMPTE_274:
402			case DPX_TRC_ITU_R_709_4:
403			avctx->color_trc = AVCOL_TRC_BT709;
404			break;
405			case DPX_TRC_ITU_R_601_625:
406			case DPX_TRC_ITU_R_601_525:
407			case DPX_TRC_SMPTE_170:
408			avctx->color_trc = AVCOL_TRC_SMPTE170M;
409			break;
410			case DPX_TRC_ITU_R_624_4_PAL:
411			avctx->color_trc = AVCOL_TRC_GAMMA28;
412			break;
413		2	case DPX_TRC_USER_DEFINED:
414			case DPX_TRC_UNSPECIFIED_VIDEO:
415			/* Nothing to do */
416		2	break;
417		2	default:
418		2	av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
419			"%d to color_trc.\n", color_trc);
420		2	break;
421			}
422
423	✓✗✗✓ ✓	93	switch (color_spec) {
424		2	case DPX_COL_SPEC_SMPTE_274:
425			case DPX_COL_SPEC_ITU_R_709_4:
426		2	avctx->color_primaries = AVCOL_PRI_BT709;
427		2	break;
428			case DPX_COL_SPEC_ITU_R_601_625:
429			case DPX_COL_SPEC_ITU_R_624_4_PAL:
430			avctx->color_primaries = AVCOL_PRI_BT470BG;
431			break;
432			case DPX_COL_SPEC_ITU_R_601_525:
433			case DPX_COL_SPEC_SMPTE_170:
434			avctx->color_primaries = AVCOL_PRI_SMPTE170M;
435			break;
436		2	case DPX_COL_SPEC_USER_DEFINED:
437			case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
438			/* Nothing to do */
439		2	break;
440		89	default:
441		89	av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
442			"%d to color_primaries.\n", color_spec);
443		89	break;
444			}
445
446	✗✓	93	if (yuv) {
447			switch (color_spec) {
448			case DPX_COL_SPEC_SMPTE_274:
449			case DPX_COL_SPEC_ITU_R_709_4:
450			avctx->colorspace = AVCOL_SPC_BT709;
451			break;
452			case DPX_COL_SPEC_ITU_R_601_625:
453			case DPX_COL_SPEC_ITU_R_624_4_PAL:
454			avctx->colorspace = AVCOL_SPC_BT470BG;
455			break;
456			case DPX_COL_SPEC_ITU_R_601_525:
457			case DPX_COL_SPEC_SMPTE_170:
458			avctx->colorspace = AVCOL_SPC_SMPTE170M;
459			break;
460			case DPX_COL_SPEC_USER_DEFINED:
461			case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
462			/* Nothing to do */
463			break;
464			default:
465			av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
466			"%d to colorspace.\n", color_spec);
467			break;
468			}
469			} else {
470		93	avctx->colorspace = AVCOL_SPC_RGB;
471			}
472
473			// Table 3c: Runs will always break at scan line boundaries. Packing
474			// will always break to the next 32-bit word at scan-line boundaries.
475			// Unfortunately, the encoder produced invalid files, so attempt
476			// to detect it
477		93	need_align = FFALIGN(stride, 4);
478	✗✓	93	if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
479			// Alignment seems unappliable, try without
480			if (stride*avctx->height + (int64_t)offset > avpkt->size) {
481			av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
482			return AVERROR_INVALIDDATA;
483			} else {
484			av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
485			"alignment.\n");
486			need_align = 0;
487			}
488			} else {
489		93	need_align -= stride;
490		93	stride = FFALIGN(stride, 4);
491			}
492
493	✗✗✓✗ ✗✓✗✓ ✗✗✗✗ ✓✓✗✓ ✗✗✗✗	93	switch (1000 * descriptor + 10 * bits_per_color + endian) {
494			case 6081:
495			case 6080:
496			avctx->pix_fmt = AV_PIX_FMT_GRAY8;
497			break;
498			case 6121:
499			case 6120:
500			avctx->pix_fmt = AV_PIX_FMT_GRAY12;
501			break;
502		19	case 50081:
503			case 50080:
504		19	avctx->pix_fmt = AV_PIX_FMT_RGB24;
505		19	break;
506			case 52081:
507			case 52080:
508			avctx->pix_fmt = AV_PIX_FMT_ABGR;
509			break;
510			case 51081:
511			case 51080:
512			avctx->pix_fmt = AV_PIX_FMT_RGBA;
513			break;
514		30	case 50100:
515			case 50101:
516		30	avctx->pix_fmt = AV_PIX_FMT_GBRP10;
517		30	break;
518			case 51100:
519			case 51101:
520			avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
521			break;
522		14	case 50120:
523			case 50121:
524		14	avctx->pix_fmt = AV_PIX_FMT_GBRP12;
525		14	break;
526			case 51120:
527			case 51121:
528			avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
529			break;
530			case 6100:
531			case 6101:
532			avctx->pix_fmt = AV_PIX_FMT_GRAY10;
533			break;
534			case 6161:
535			avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
536			break;
537			case 6160:
538			avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
539			break;
540		2	case 50161:
541		2	avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
542		2	break;
543		14	case 50160:
544		14	avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
545		14	break;
546			case 51161:
547			avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
548			break;
549		14	case 51160:
550		14	avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
551		14	break;
552			case 100081:
553			avctx->pix_fmt = AV_PIX_FMT_UYVY422;
554			break;
555			case 102081:
556			avctx->pix_fmt = AV_PIX_FMT_YUV444P;
557			break;
558			case 103081:
559			avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
560			break;
561			default:
562			av_log(avctx, AV_LOG_ERROR, "Unsupported format\n");
563			return AVERROR_PATCHWELCOME;
564			}
565
566		93	ff_set_sar(avctx, avctx->sample_aspect_ratio);
567
568	✗✓	93	if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
569			return ret;
570
571		93	av_strlcpy(creator, avpkt->data + 160, 100);
572		93	creator[100] = '\0';
573		93	av_dict_set(&p->metadata, "Creator", creator, 0);
574
575		93	av_strlcpy(input_device, avpkt->data + 1556, 32);
576		93	input_device[32] = '\0';
577		93	av_dict_set(&p->metadata, "Input Device", input_device, 0);
578
579			// Some devices do not pad 10bit samples to whole 32bit words per row
580	✓✗	93	if (!memcmp(input_device, "Scanity", 7) \|\|
581	✗✓	93	!memcmp(creator, "Lasergraphics Inc.", 18)) {
582			unpadded_10bit = 1;
583			}
584
585			// Move pointer to offset from start of file
586		93	buf = avpkt->data + offset;
587
588	✓✓	837	for (i=0; i<AV_NUM_DATA_POINTERS; i++)
589		744	ptr[i] = p->data[i];
590
591	✓✓✓✓ ✗	93	switch (bits_per_color) {
592		30	case 10:
593	✓✓	8574	for (x = 0; x < avctx->height; x++) {
594		8544	uint16_t dst[4] = {(uint16_t)ptr[0],
595		8544	(uint16_t*)ptr[1],
596		8544	(uint16_t*)ptr[2],
597		8544	(uint16_t*)ptr[3]};
598	✓✗✓✗ ✗✗	8544	int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
599	✓✓	3052512	for (y = 0; y < avctx->width; y++) {
600	✓✗	3043968	if (elements >= 3)
601		3043968	*dst[2]++ = read10in32(&buf, &rgbBuffer,
602			&n_datum, endian, shift);
603	✗✓	3043968	if (elements == 1)
604			*dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
605			&n_datum, endian, shift);
606			else
607		3043968	*dst[0]++ = read10in32(&buf, &rgbBuffer,
608			&n_datum, endian, shift);
609	✓✗	3043968	if (elements >= 2)
610		3043968	*dst[1]++ = read10in32(&buf, &rgbBuffer,
611			&n_datum, endian, shift);
612	✗✓	3043968	if (elements == 4)
613			*dst[3]++ =
614			read10in32(&buf, &rgbBuffer,
615			&n_datum, endian, shift);
616			}
617	✓✗	8544	if (!unpadded_10bit)
618		8544	n_datum = 0;
619	✓✓	34176	for (i = 0; i < elements; i++)
620		25632	ptr[i] += p->linesize[i];
621			}
622		30	break;
623		14	case 12:
624	✓✓	4046	for (x = 0; x < avctx->height; x++) {
625		4032	uint16_t dst[4] = {(uint16_t)ptr[0],
626		4032	(uint16_t*)ptr[1],
627		4032	(uint16_t*)ptr[2],
628		4032	(uint16_t*)ptr[3]};
629	✓✗	4032	int shift = packing == 1 ? 4 : 0;
630	✓✓	1423296	for (y = 0; y < avctx->width; y++) {
631	✓✗	1419264	if (packing) {
632	✓✗	1419264	if (elements >= 3)
633		1419264	*dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
634		1419264	*dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
635	✓✗	1419264	if (elements >= 2)
636		1419264	*dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
637	✗✓	1419264	if (elements == 4)
638			*dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
639			} else {
640			if (elements >= 3)
641			*dst[2]++ = read12in32(&buf, &rgbBuffer,
642			&n_datum, endian);
643			*dst[0]++ = read12in32(&buf, &rgbBuffer,
644			&n_datum, endian);
645			if (elements >= 2)
646			*dst[1]++ = read12in32(&buf, &rgbBuffer,
647			&n_datum, endian);
648			if (elements == 4)
649			*dst[3]++ = read12in32(&buf, &rgbBuffer,
650			&n_datum, endian);
651			}
652			}
653		4032	n_datum = 0;
654	✓✓	16128	for (i = 0; i < elements; i++)
655		12096	ptr[i] += p->linesize[i];
656			// Jump to next aligned position
657		4032	buf += need_align;
658			}
659		14	break;
660		30	case 16:
661		30	elements *= 2;
662		49	case 8:
663	✓✗	49	if ( avctx->pix_fmt == AV_PIX_FMT_YUVA444P
664	✗✓	49	\|\| avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
665			for (x = 0; x < avctx->height; x++) {
666			ptr[0] = p->data[0] + x * p->linesize[0];
667			ptr[1] = p->data[1] + x * p->linesize[1];
668			ptr[2] = p->data[2] + x * p->linesize[2];
669			ptr[3] = p->data[3] + x * p->linesize[3];
670			for (y = 0; y < avctx->width; y++) {
671			ptr[1]++ = buf++;
672			ptr[0]++ = buf++;
673			ptr[2]++ = buf++;
674			if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
675			ptr[3]++ = buf++;
676			}
677			}
678			} else {
679		49	av_image_copy_plane(ptr[0], p->linesize[0],
680			buf, stride,
681		49	elements * avctx->width, avctx->height);
682			}
683		49	break;
684			}
685
686		93	*got_frame = 1;
687
688		93	return buf_size;
689			}
690
691			AVCodec ff_dpx_decoder = {
692			.name = "dpx",
693			.long_name = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
694			.type = AVMEDIA_TYPE_VIDEO,
695			.id = AV_CODEC_ID_DPX,
696			.decode = decode_frame,
697			.capabilities = AV_CODEC_CAP_DR1,
698			};