FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/dpx.c	Lines:	175	315	55.6 %
Date:	2020-09-28 00:47:38	Branches:	71	154	46.1 %


/*
 * 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 "bytestream.h"
#include "avcodec.h"
#include "internal.h"

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, ret;
    int w, h, bits_per_color, descriptor, elements, packing;
    int encoding, need_align = 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];

    // 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 };

    if (offset >= 1724 + 4) {
        buf = avpkt->data + 1724;
        i = read32(&buf, endian);
        if(i) {
            AVRational q = av_d2q(av_int2float(i), 4096);
            if (q.num > 0 && q.den > 0)
                avctx->framerate = q;
        }
    }

    switch (descriptor) {
    case 6:  // Y
        elements = 1;
        break;
    case 52: // ABGR
    case 51: // RGBA
    case 103: // UYVA4444
        elements = 4;
        break;
    case 50: // RGB
    case 102: // UYV444
        elements = 3;
        break;
    case 100: // UYVY422
        elements = 2;
        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;
    }

    // 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);

    // 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 (memcmp(input_device, "Scanity", 7))
                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 "bytestream.h"
27			#include "avcodec.h"
28			#include "internal.h"
29
30		4257974	static unsigned int read16(const uint8_t **ptr, int is_big)
31			{
32			unsigned int temp;
33	✓✓	4257974	if (is_big) {
34		4	temp = AV_RB16(*ptr);
35			} else {
36		4257970	temp = AV_RL16(*ptr);
37			}
38		4257974	*ptr += 2;
39		4257974	return temp;
40			}
41
42		2839167	static unsigned int read32(const uint8_t **ptr, int is_big)
43			{
44			unsigned int temp;
45	✓✓	2839167	if (is_big) {
46		14	temp = AV_RB32(*ptr);
47			} else {
48		2839153	temp = AV_RL32(*ptr);
49			}
50		2839167	*ptr += 4;
51		2839167	return temp;
52			}
53
54			static uint16_t read10in32_gray(const uint8_t *ptr, uint32_t lbuf,
55			int *n_datum, int is_big, int shift)
56			{
57			uint16_t temp;
58
59			if (*n_datum)
60			(*n_datum)--;
61			else {
62			*lbuf = read32(ptr, is_big);
63			*n_datum = 2;
64			}
65
66			temp = *lbuf >> shift & 0x3FF;
67			lbuf = lbuf >> 10;
68
69			return temp;
70			}
71
72		8515584	static uint16_t read10in32(const uint8_t *ptr, uint32_t lbuf,
73			int *n_datum, int is_big, int shift)
74			{
75	✓✓	8515584	if (*n_datum)
76		5677056	(*n_datum)--;
77			else {
78		2838528	*lbuf = read32(ptr, is_big);
79		2838528	*n_datum = 2;
80			}
81
82		8515584	lbuf = lbuf << 10 \| *lbuf >> shift & 0x3FFFFF;
83
84		8515584	return *lbuf & 0x3FF;
85			}
86
87			static uint16_t read12in32(const uint8_t *ptr, uint32_t lbuf,
88			int *n_datum, int is_big)
89			{
90			if (*n_datum)
91			(*n_datum)--;
92			else {
93			*lbuf = read32(ptr, is_big);
94			*n_datum = 7;
95			}
96
97			switch (*n_datum){
98			case 7: return *lbuf & 0xFFF;
99			case 6: return (*lbuf >> 12) & 0xFFF;
100			case 5: {
101			uint32_t c = *lbuf >> 24;
102			*lbuf = read32(ptr, is_big);
103			c \|= *lbuf << 8;
104			return c & 0xFFF;
105			}
106			case 4: return (*lbuf >> 4) & 0xFFF;
107			case 3: return (*lbuf >> 16) & 0xFFF;
108			case 2: {
109			uint32_t c = *lbuf >> 28;
110			*lbuf = read32(ptr, is_big);
111			c \|= *lbuf << 4;
112			return c & 0xFFF;
113			}
114			case 1: return (*lbuf >> 8) & 0xFFF;
115			default: return *lbuf >> 20;
116			}
117			}
118
119		91	static int decode_frame(AVCodecContext *avctx,
120			void *data,
121			int *got_frame,
122			AVPacket *avpkt)
123			{
124		91	const uint8_t *buf = avpkt->data;
125		91	int buf_size = avpkt->size;
126		91	AVFrame *const p = data;
127			uint8_t *ptr[AV_NUM_DATA_POINTERS];
128		91	uint32_t header_version, version = 0;
129			char creator[101];
130			char input_device[33];
131
132			unsigned int offset;
133			int magic_num, endian;
134			int x, y, stride, i, ret;
135			int w, h, bits_per_color, descriptor, elements, packing;
136		91	int encoding, need_align = 0;
137
138		91	unsigned int rgbBuffer = 0;
139		91	int n_datum = 0;
140
141	✗✓	91	if (avpkt->size <= 1634) {
142			av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
143			return AVERROR_INVALIDDATA;
144			}
145
146		91	magic_num = AV_RB32(buf);
147		91	buf += 4;
148
149			/* Check if the files "magic number" is "SDPX" which means it uses
150			* big-endian or XPDS which is for little-endian files */
151	✓✓	91	if (magic_num == AV_RL32("SDPX")) {
152		89	endian = 0;
153	✓✗	2	} else if (magic_num == AV_RB32("SDPX")) {
154		2	endian = 1;
155			} else {
156			av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
157			return AVERROR_INVALIDDATA;
158			}
159
160		91	offset = read32(&buf, endian);
161	✗✓	91	if (avpkt->size <= offset) {
162			av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
163			return AVERROR_INVALIDDATA;
164			}
165
166		91	header_version = read32(&buf, 0);
167	✓✓	91	if (header_version == MKTAG('V','1','.','0'))
168		89	version = 1;
169	✓✓	91	if (header_version == MKTAG('V','2','.','0'))
170		2	version = 2;
171	✗✓	91	if (!version)
172			av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
173			av_fourcc2str(header_version));
174
175			// Check encryption
176		91	buf = avpkt->data + 660;
177		91	ret = read32(&buf, endian);
178	✗✓	91	if (ret != 0xFFFFFFFF) {
179			avpriv_report_missing_feature(avctx, "Encryption");
180			av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
181			"not properly decode.\n");
182			}
183
184			// Need to end in 0x304 offset from start of file
185		91	buf = avpkt->data + 0x304;
186		91	w = read32(&buf, endian);
187		91	h = read32(&buf, endian);
188
189	✗✓	91	if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
190			return ret;
191
192			// Need to end in 0x320 to read the descriptor
193		91	buf += 20;
194		91	descriptor = buf[0];
195
196			// Need to end in 0x323 to read the bits per color
197		91	buf += 3;
198		91	avctx->bits_per_raw_sample =
199		91	bits_per_color = buf[0];
200		91	buf++;
201		91	packing = read16(&buf, endian);
202		91	encoding = read16(&buf, endian);
203
204	✗✓	91	if (encoding) {
205			avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
206			return AVERROR_PATCHWELCOME;
207			}
208
209		91	buf += 820;
210		91	avctx->sample_aspect_ratio.num = read32(&buf, endian);
211		91	avctx->sample_aspect_ratio.den = read32(&buf, endian);
212	✗✓✗✗	91	if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
213			av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
214			avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
215			0x10000);
216			else
217		91	avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
218
219	✓✓	91	if (offset >= 1724 + 4) {
220		2	buf = avpkt->data + 1724;
221		2	i = read32(&buf, endian);
222	✗✓	2	if(i) {
223			AVRational q = av_d2q(av_int2float(i), 4096);
224			if (q.num > 0 && q.den > 0)
225			avctx->framerate = q;
226			}
227			}
228
229	✗✓✓✗ ✗	91	switch (descriptor) {
230			case 6: // Y
231			elements = 1;
232			break;
233		14	case 52: // ABGR
234			case 51: // RGBA
235			case 103: // UYVA4444
236		14	elements = 4;
237		14	break;
238		77	case 50: // RGB
239			case 102: // UYV444
240		77	elements = 3;
241		77	break;
242			case 100: // UYVY422
243			elements = 2;
244			break;
245			default:
246			avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
247			return AVERROR_PATCHWELCOME;
248			}
249
250	✓✓✓✓ ✗✗	91	switch (bits_per_color) {
251		19	case 8:
252		19	stride = avctx->width * elements;
253		19	break;
254		28	case 10:
255	✗✓	28	if (!packing) {
256			av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
257			return -1;
258			}
259		28	stride = (avctx->width * elements + 2) / 3 * 4;
260		28	break;
261		14	case 12:
262		14	stride = avctx->width * elements;
263	✓✗	14	if (packing) {
264		14	stride *= 2;
265			} else {
266			stride *= 3;
267			if (stride % 8) {
268			stride /= 8;
269			stride++;
270			stride *= 8;
271			}
272			stride /= 2;
273			}
274		14	break;
275		30	case 16:
276		30	stride = 2 * avctx->width * elements;
277		30	break;
278			case 1:
279			case 32:
280			case 64:
281			avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
282			return AVERROR_PATCHWELCOME;
283			default:
284			return AVERROR_INVALIDDATA;
285			}
286
287			// Table 3c: Runs will always break at scan line boundaries. Packing
288			// will always break to the next 32-bit word at scan-line boundaries.
289			// Unfortunately, the encoder produced invalid files, so attempt
290			// to detect it
291		91	need_align = FFALIGN(stride, 4);
292	✗✓	91	if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
293			// Alignment seems unappliable, try without
294			if (stride*avctx->height + (int64_t)offset > avpkt->size) {
295			av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
296			return AVERROR_INVALIDDATA;
297			} else {
298			av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
299			"alignment.\n");
300			need_align = 0;
301			}
302			} else {
303		91	need_align -= stride;
304		91	stride = FFALIGN(stride, 4);
305			}
306
307	✗✗✓✗ ✗✓✗✓ ✗✗✗✗ ✓✓✗✓ ✗✗✗✗	91	switch (1000 * descriptor + 10 * bits_per_color + endian) {
308			case 6081:
309			case 6080:
310			avctx->pix_fmt = AV_PIX_FMT_GRAY8;
311			break;
312			case 6121:
313			case 6120:
314			avctx->pix_fmt = AV_PIX_FMT_GRAY12;
315			break;
316		19	case 50081:
317			case 50080:
318		19	avctx->pix_fmt = AV_PIX_FMT_RGB24;
319		19	break;
320			case 52081:
321			case 52080:
322			avctx->pix_fmt = AV_PIX_FMT_ABGR;
323			break;
324			case 51081:
325			case 51080:
326			avctx->pix_fmt = AV_PIX_FMT_RGBA;
327			break;
328		28	case 50100:
329			case 50101:
330		28	avctx->pix_fmt = AV_PIX_FMT_GBRP10;
331		28	break;
332			case 51100:
333			case 51101:
334			avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
335			break;
336		14	case 50120:
337			case 50121:
338		14	avctx->pix_fmt = AV_PIX_FMT_GBRP12;
339		14	break;
340			case 51120:
341			case 51121:
342			avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
343			break;
344			case 6100:
345			case 6101:
346			avctx->pix_fmt = AV_PIX_FMT_GRAY10;
347			break;
348			case 6161:
349			avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
350			break;
351			case 6160:
352			avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
353			break;
354		2	case 50161:
355		2	avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
356		2	break;
357		14	case 50160:
358		14	avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
359		14	break;
360			case 51161:
361			avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
362			break;
363		14	case 51160:
364		14	avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
365		14	break;
366			case 100081:
367			avctx->pix_fmt = AV_PIX_FMT_UYVY422;
368			break;
369			case 102081:
370			avctx->pix_fmt = AV_PIX_FMT_YUV444P;
371			break;
372			case 103081:
373			avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
374			break;
375			default:
376			av_log(avctx, AV_LOG_ERROR, "Unsupported format\n");
377			return AVERROR_PATCHWELCOME;
378			}
379
380		91	ff_set_sar(avctx, avctx->sample_aspect_ratio);
381
382	✗✓	91	if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
383			return ret;
384
385		91	av_strlcpy(creator, avpkt->data + 160, 100);
386		91	creator[100] = '\0';
387		91	av_dict_set(&p->metadata, "Creator", creator, 0);
388
389		91	av_strlcpy(input_device, avpkt->data + 1556, 32);
390		91	input_device[32] = '\0';
391		91	av_dict_set(&p->metadata, "Input Device", input_device, 0);
392
393			// Move pointer to offset from start of file
394		91	buf = avpkt->data + offset;
395
396	✓✓	819	for (i=0; i<AV_NUM_DATA_POINTERS; i++)
397		728	ptr[i] = p->data[i];
398
399	✓✓✓✓ ✗	91	switch (bits_per_color) {
400		28	case 10:
401	✓✓	8092	for (x = 0; x < avctx->height; x++) {
402		8064	uint16_t dst[4] = {(uint16_t)ptr[0],
403		8064	(uint16_t*)ptr[1],
404		8064	(uint16_t*)ptr[2],
405		8064	(uint16_t*)ptr[3]};
406	✓✗✓✗ ✗✗	8064	int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
407	✓✓	2846592	for (y = 0; y < avctx->width; y++) {
408	✓✗	2838528	if (elements >= 3)
409		2838528	*dst[2]++ = read10in32(&buf, &rgbBuffer,
410			&n_datum, endian, shift);
411	✗✓	2838528	if (elements == 1)
412			*dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
413			&n_datum, endian, shift);
414			else
415		2838528	*dst[0]++ = read10in32(&buf, &rgbBuffer,
416			&n_datum, endian, shift);
417	✓✗	2838528	if (elements >= 2)
418		2838528	*dst[1]++ = read10in32(&buf, &rgbBuffer,
419			&n_datum, endian, shift);
420	✗✓	2838528	if (elements == 4)
421			*dst[3]++ =
422			read10in32(&buf, &rgbBuffer,
423			&n_datum, endian, shift);
424			}
425	✓✗	8064	if (memcmp(input_device, "Scanity", 7))
426		8064	n_datum = 0;
427	✓✓	32256	for (i = 0; i < elements; i++)
428		24192	ptr[i] += p->linesize[i];
429			}
430		28	break;
431		14	case 12:
432	✓✓	4046	for (x = 0; x < avctx->height; x++) {
433		4032	uint16_t dst[4] = {(uint16_t)ptr[0],
434		4032	(uint16_t*)ptr[1],
435		4032	(uint16_t*)ptr[2],
436		4032	(uint16_t*)ptr[3]};
437	✓✗	4032	int shift = packing == 1 ? 4 : 0;
438	✓✓	1423296	for (y = 0; y < avctx->width; y++) {
439	✓✗	1419264	if (packing) {
440	✓✗	1419264	if (elements >= 3)
441		1419264	*dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
442		1419264	*dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
443	✓✗	1419264	if (elements >= 2)
444		1419264	*dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
445	✗✓	1419264	if (elements == 4)
446			*dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
447			} else {
448			if (elements >= 3)
449			*dst[2]++ = read12in32(&buf, &rgbBuffer,
450			&n_datum, endian);
451			*dst[0]++ = read12in32(&buf, &rgbBuffer,
452			&n_datum, endian);
453			if (elements >= 2)
454			*dst[1]++ = read12in32(&buf, &rgbBuffer,
455			&n_datum, endian);
456			if (elements == 4)
457			*dst[3]++ = read12in32(&buf, &rgbBuffer,
458			&n_datum, endian);
459			}
460			}
461		4032	n_datum = 0;
462	✓✓	16128	for (i = 0; i < elements; i++)
463		12096	ptr[i] += p->linesize[i];
464			// Jump to next aligned position
465		4032	buf += need_align;
466			}
467		14	break;
468		30	case 16:
469		30	elements *= 2;
470		49	case 8:
471	✓✗	49	if ( avctx->pix_fmt == AV_PIX_FMT_YUVA444P
472	✗✓	49	\|\| avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
473			for (x = 0; x < avctx->height; x++) {
474			ptr[0] = p->data[0] + x * p->linesize[0];
475			ptr[1] = p->data[1] + x * p->linesize[1];
476			ptr[2] = p->data[2] + x * p->linesize[2];
477			ptr[3] = p->data[3] + x * p->linesize[3];
478			for (y = 0; y < avctx->width; y++) {
479			ptr[1]++ = buf++;
480			ptr[0]++ = buf++;
481			ptr[2]++ = buf++;
482			if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
483			ptr[3]++ = buf++;
484			}
485			}
486			} else {
487		49	av_image_copy_plane(ptr[0], p->linesize[0],
488			buf, stride,
489		49	elements * avctx->width, avctx->height);
490			}
491		49	break;
492			}
493
494		91	*got_frame = 1;
495
496		91	return buf_size;
497			}
498
499			AVCodec ff_dpx_decoder = {
500			.name = "dpx",
501			.long_name = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
502			.type = AVMEDIA_TYPE_VIDEO,
503			.id = AV_CODEC_ID_DPX,
504			.decode = decode_frame,
505			.capabilities = AV_CODEC_CAP_DR1,
506			};