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avcodec/tiff: Recognize DNG/CinemaDNG images
Additionally: - Renamed TIFF_WHITE_LEVEL to DNG_WHITE_LEVEL since it is specified in the DNG spec. - Added/changed some comments to be more precise in differentiating between TIFF, TIFF/EP and DNG values. Related to ticket: https://trac.ffmpeg.org/ticket/4364 Signed-off-by: Nick Renieris <velocityra@gmail.com>
This commit is contained in:
Nick Renieris
Paul B Mahol
parent
661facb8a8
commit
9c35285aea
@ -58,6 +58,7 @@ typedef struct TiffContext {
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uint16_t get_page;
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int get_thumbnail;
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enum TiffType tiff_type;
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int width, height;
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unsigned int bpp, bppcount;
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uint32_t palette[256];
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@ -96,6 +97,11 @@ typedef struct TiffContext {
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TiffGeoTag *geotags;
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} TiffContext;
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static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
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if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
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s->tiff_type = tiff_type;
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}
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static void free_geotags(TiffContext *const s)
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{
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int i;
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@ -1095,7 +1101,7 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
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else if (count > 1)
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s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
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break;
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case TIFF_WHITE_LEVEL:
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case DNG_WHITE_LEVEL:
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s->white_level = value;
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break;
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case TIFF_CFA_PATTERN_DIM:
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@ -1346,6 +1352,27 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
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case TIFF_SOFTWARE_NAME:
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ADD_METADATA(count, "software", NULL);
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break;
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case DNG_VERSION:
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if (count == 4) {
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unsigned int ver[4];
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ver[0] = ff_tget(&s->gb, type, s->le);
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ver[1] = ff_tget(&s->gb, type, s->le);
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ver[2] = ff_tget(&s->gb, type, s->le);
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ver[3] = ff_tget(&s->gb, type, s->le);
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av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
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ver[0], ver[1], ver[2], ver[3]);
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tiff_set_type(s, TIFF_TYPE_DNG);
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}
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break;
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case CINEMADNG_TIME_CODES:
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case CINEMADNG_FRAME_RATE:
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case CINEMADNG_T_STOP:
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case CINEMADNG_REEL_NAME:
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case CINEMADNG_CAMERA_LABEL:
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tiff_set_type(s, TIFF_TYPE_CINEMADNG);
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break;
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default:
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if (s->avctx->err_recognition & AV_EF_EXPLODE) {
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av_log(s->avctx, AV_LOG_ERROR,
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@ -1402,6 +1429,7 @@ again:
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s->white_level = 0;
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s->is_bayer = 0;
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s->cur_page = 0;
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s->tiff_type = TIFF_TYPE_TIFF;
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free_geotags(s);
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// Reset these offsets so we can tell if they were set this frame
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@ -20,7 +20,7 @@
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/**
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* @file
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* TIFF tables
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* TIFF constants & data structures
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*
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* For more information about the TIFF format, check the official docs at:
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* http://partners.adobe.com/public/developer/tiff/index.html
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@ -33,7 +33,17 @@
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#include <stdint.h>
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#include "tiff_common.h"
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/** abridged list of TIFF tags */
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/** TIFF types in ascenting priority (last in the list is highest) */
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enum TiffType {
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/** TIFF image based on the TIFF 6.0 or TIFF/EP (ISO 12234-2) specifications */
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TIFF_TYPE_TIFF,
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/** Digital Negative (DNG) image */
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TIFF_TYPE_DNG,
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/** Digital Negative (DNG) image part of an CinemaDNG image sequence */
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TIFF_TYPE_CINEMADNG,
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};
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/** abridged list of TIFF and TIFF/EP tags */
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enum TiffTags {
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TIFF_SUBFILE = 0xfe,
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TIFF_WIDTH = 0x100,
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@ -85,10 +95,25 @@ enum TiffTags {
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TIFF_GEO_KEY_DIRECTORY = 0x87AF,
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TIFF_GEO_DOUBLE_PARAMS = 0x87B0,
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TIFF_GEO_ASCII_PARAMS = 0x87B1,
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TIFF_WHITE_LEVEL = 0xC61D,
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};
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/** list of TIFF compression types */
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/** abridged list of DNG tags */
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enum DngTags {
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DNG_VERSION = 0xC612,
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DNG_BACKWARD_VERSION = 0xC613,
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DNG_WHITE_LEVEL = 0xC61D,
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};
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/** list of CinemaDNG tags */
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enum CinemaDngTags {
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CINEMADNG_TIME_CODES = 0xC763,
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CINEMADNG_FRAME_RATE = 0xC764,
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CINEMADNG_T_STOP = 0xC772,
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CINEMADNG_REEL_NAME = 0xC789,
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CINEMADNG_CAMERA_LABEL = 0xC7A1,
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};
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/** list of TIFF, TIFF/EP and DNG compression types */
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enum TiffCompr {
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TIFF_RAW = 1,
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TIFF_CCITT_RLE,
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@ -151,6 +176,7 @@ enum TiffGeoTagKey {
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TIFF_VERTICAL_UNITS_GEOKEY = 4099
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};
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/** list of TIFF, TIFF/AP and DNG PhotometricInterpretation (TIFF_PHOTOMETRIC) values */
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enum TiffPhotometric {
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TIFF_PHOTOMETRIC_NONE = -1,
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TIFF_PHOTOMETRIC_WHITE_IS_ZERO, /* mono or grayscale, 0 is white */
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@ -163,7 +189,7 @@ enum TiffPhotometric {
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TIFF_PHOTOMETRIC_CIE_LAB = 8, /* 1976 CIE L*a*b* */
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TIFF_PHOTOMETRIC_ICC_LAB, /* ICC L*a*b* */
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TIFF_PHOTOMETRIC_ITU_LAB, /* ITU L*a*b* */
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TIFF_PHOTOMETRIC_CFA = 32803, /* Color Filter Array (DNG) */
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TIFF_PHOTOMETRIC_CFA = 32803, /* Color Filter Array (TIFF/AP and DNG) */
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TIFF_PHOTOMETRIC_LOG_L = 32844, /* CIE Log2(L) */
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TIFF_PHOTOMETRIC_LOG_LUV, /* CIE Log L*u*v* */
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TIFF_PHOTOMETRIC_LINEAR_RAW = 34892, /* Linear Raw (DNG) */
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@ -51,6 +51,7 @@ const IdStrMap ff_img_tags[] = {
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{ AV_CODEC_ID_TARGA, "tga" },
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{ AV_CODEC_ID_TIFF, "tiff" },
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{ AV_CODEC_ID_TIFF, "tif" },
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{ AV_CODEC_ID_TIFF, "dng" },
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{ AV_CODEC_ID_SGI, "sgi" },
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{ AV_CODEC_ID_PTX, "ptx" },
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{ AV_CODEC_ID_PCX, "pcx" },
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