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Diffstat (limited to 'ffmpeg/libavcodec/tiffenc.c')
-rw-r--r--ffmpeg/libavcodec/tiffenc.c552
1 files changed, 0 insertions, 552 deletions
diff --git a/ffmpeg/libavcodec/tiffenc.c b/ffmpeg/libavcodec/tiffenc.c
deleted file mode 100644
index 7b1e510..0000000
--- a/ffmpeg/libavcodec/tiffenc.c
+++ /dev/null
@@ -1,552 +0,0 @@
-/*
- * TIFF image encoder
- * Copyright (c) 2007 Bartlomiej Wolowiec
- *
- * 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
- */
-
-/**
- * @file
- * TIFF image encoder
- * @author Bartlomiej Wolowiec
- */
-
-#include "config.h"
-#if CONFIG_ZLIB
-#include <zlib.h>
-#endif
-
-#include "libavutil/imgutils.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
-#include "libavutil/pixdesc.h"
-#include "avcodec.h"
-#include "bytestream.h"
-#include "internal.h"
-#include "lzw.h"
-#include "put_bits.h"
-#include "rle.h"
-#include "tiff.h"
-
-#define TIFF_MAX_ENTRY 32
-
-/** sizes of various TIFF field types (string size = 1)*/
-static const uint8_t type_sizes2[14] = {
- 0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 4
-};
-
-typedef struct TiffEncoderContext {
- AVClass *class; ///< for private options
- AVCodecContext *avctx;
-
- int width; ///< picture width
- int height; ///< picture height
- unsigned int bpp; ///< bits per pixel
- int compr; ///< compression level
- int bpp_tab_size; ///< bpp_tab size
- int photometric_interpretation; ///< photometric interpretation
- int strips; ///< number of strips
- uint32_t *strip_sizes;
- unsigned int strip_sizes_size;
- uint32_t *strip_offsets;
- unsigned int strip_offsets_size;
- uint8_t *yuv_line;
- unsigned int yuv_line_size;
- int rps; ///< row per strip
- uint8_t entries[TIFF_MAX_ENTRY * 12]; ///< entries in header
- int num_entries; ///< number of entries
- uint8_t **buf; ///< actual position in buffer
- uint8_t *buf_start; ///< pointer to first byte in buffer
- int buf_size; ///< buffer size
- uint16_t subsampling[2]; ///< YUV subsampling factors
- struct LZWEncodeState *lzws; ///< LZW encode state
- uint32_t dpi; ///< image resolution in DPI
-} TiffEncoderContext;
-
-/**
- * Check free space in buffer.
- *
- * @param s Tiff context
- * @param need Needed bytes
- * @return 0 - ok, 1 - no free space
- */
-static inline int check_size(TiffEncoderContext *s, uint64_t need)
-{
- if (s->buf_size < *s->buf - s->buf_start + need) {
- *s->buf = s->buf_start + s->buf_size + 1;
- av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
- return 1;
- }
- return 0;
-}
-
-/**
- * Put n values to buffer.
- *
- * @param p pointer to pointer to output buffer
- * @param n number of values
- * @param val pointer to values
- * @param type type of values
- * @param flip = 0 - normal copy, >0 - flip
- */
-static void tnput(uint8_t **p, int n, const uint8_t *val, enum TiffTypes type,
- int flip)
-{
- int i;
-#if HAVE_BIGENDIAN
- flip ^= ((int[]) { 0, 0, 0, 1, 3, 3 })[type];
-#endif
- for (i = 0; i < n * type_sizes2[type]; i++)
- *(*p)++ = val[i ^ flip];
-}
-
-/**
- * Add entry to directory in tiff header.
- *
- * @param s Tiff context
- * @param tag tag that identifies the entry
- * @param type entry type
- * @param count the number of values
- * @param ptr_val pointer to values
- */
-static void add_entry(TiffEncoderContext *s, enum TiffTags tag,
- enum TiffTypes type, int count, const void *ptr_val)
-{
- uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
-
- av_assert0(s->num_entries < TIFF_MAX_ENTRY);
-
- bytestream_put_le16(&entries_ptr, tag);
- bytestream_put_le16(&entries_ptr, type);
- bytestream_put_le32(&entries_ptr, count);
-
- if (type_sizes[type] * (int64_t)count <= 4) {
- tnput(&entries_ptr, count, ptr_val, type, 0);
- } else {
- bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
- check_size(s, count * (int64_t)type_sizes2[type]);
- tnput(s->buf, count, ptr_val, type, 0);
- }
-
- s->num_entries++;
-}
-
-static void add_entry1(TiffEncoderContext *s,
- enum TiffTags tag, enum TiffTypes type, int val)
-{
- uint16_t w = val;
- uint32_t dw = val;
- add_entry(s, tag, type, 1, type == TIFF_SHORT ? (void *)&w : (void *)&dw);
-}
-
-/**
- * Encode one strip in tiff file.
- *
- * @param s Tiff context
- * @param src input buffer
- * @param dst output buffer
- * @param n size of input buffer
- * @param compr compression method
- * @return number of output bytes. If an output error is encountered, -1 is returned
- */
-static int encode_strip(TiffEncoderContext *s, const int8_t *src,
- uint8_t *dst, int n, int compr)
-{
- switch (compr) {
-#if CONFIG_ZLIB
- case TIFF_DEFLATE:
- case TIFF_ADOBE_DEFLATE:
- {
- unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
- if (compress(dst, &zlen, src, n) != Z_OK) {
- av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
- return -1;
- }
- return zlen;
- }
-#endif
- case TIFF_RAW:
- if (check_size(s, n))
- return -1;
- memcpy(dst, src, n);
- return n;
- case TIFF_PACKBITS:
- return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start),
- src, 1, n, 2, 0xff, -1, 0);
- case TIFF_LZW:
- return ff_lzw_encode(s->lzws, src, n);
- default:
- return -1;
- }
-}
-
-static void pack_yuv(TiffEncoderContext *s, const AVFrame *p,
- uint8_t *dst, int lnum)
-{
- int i, j, k;
- int w = (s->width - 1) / s->subsampling[0] + 1;
- uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
- uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
- if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
- for (i = 0; i < w; i++) {
- for (j = 0; j < s->subsampling[1]; j++)
- for (k = 0; k < s->subsampling[0]; k++)
- *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
- FFMIN(i * s->subsampling[0] + k, s->width-1)];
- *dst++ = *pu++;
- *dst++ = *pv++;
- }
- }else{
- for (i = 0; i < w; i++) {
- for (j = 0; j < s->subsampling[1]; j++)
- for (k = 0; k < s->subsampling[0]; k++)
- *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
- i * s->subsampling[0] + k];
- *dst++ = *pu++;
- *dst++ = *pv++;
- }
- }
-}
-
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *pict, int *got_packet)
-{
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
- TiffEncoderContext *s = avctx->priv_data;
- const AVFrame *const p = pict;
- int i;
- uint8_t *ptr;
- uint8_t *offset;
- uint32_t strips;
- int bytes_per_row;
- uint32_t res[2] = { s->dpi, 1 }; // image resolution (72/1)
- uint16_t bpp_tab[4];
- int ret = -1;
- int is_yuv = 0, alpha = 0;
- int shift_h, shift_v;
-
- s->width = avctx->width;
- s->height = avctx->height;
- s->subsampling[0] = 1;
- s->subsampling[1] = 1;
-
- avctx->bits_per_coded_sample =
- s->bpp = av_get_bits_per_pixel(desc);
- s->bpp_tab_size = desc->nb_components;
-
- switch (avctx->pix_fmt) {
- case AV_PIX_FMT_RGBA64LE:
- case AV_PIX_FMT_RGBA:
- alpha = 1;
- case AV_PIX_FMT_RGB48LE:
- case AV_PIX_FMT_RGB24:
- s->photometric_interpretation = 2;
- break;
- case AV_PIX_FMT_GRAY8:
- avctx->bits_per_coded_sample = 0x28;
- case AV_PIX_FMT_GRAY8A:
- alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A;
- case AV_PIX_FMT_GRAY16LE:
- case AV_PIX_FMT_MONOBLACK:
- s->photometric_interpretation = 1;
- break;
- case AV_PIX_FMT_PAL8:
- s->photometric_interpretation = 3;
- break;
- case AV_PIX_FMT_MONOWHITE:
- s->photometric_interpretation = 0;
- break;
- case AV_PIX_FMT_YUV420P:
- case AV_PIX_FMT_YUV422P:
- case AV_PIX_FMT_YUV440P:
- case AV_PIX_FMT_YUV444P:
- case AV_PIX_FMT_YUV410P:
- case AV_PIX_FMT_YUV411P:
- av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
- s->photometric_interpretation = 6;
- s->subsampling[0] = 1 << shift_h;
- s->subsampling[1] = 1 << shift_v;
- is_yuv = 1;
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR,
- "This colors format is not supported\n");
- return -1;
- }
-
- for (i = 0; i < s->bpp_tab_size; i++)
- bpp_tab[i] = desc->comp[i].depth_minus1 + 1;
-
- if (s->compr == TIFF_DEFLATE ||
- s->compr == TIFF_ADOBE_DEFLATE ||
- s->compr == TIFF_LZW)
- // best choice for DEFLATE
- s->rps = s->height;
- else
- // suggest size of strip
- s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);
- // round rps up
- s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1];
-
- strips = (s->height - 1) / s->rps + 1;
-
- if ((ret = ff_alloc_packet2(avctx, pkt,
- avctx->width * avctx->height * s->bpp * 2 +
- avctx->height * 4 + FF_MIN_BUFFER_SIZE)) < 0)
- return ret;
- ptr = pkt->data;
- s->buf_start = pkt->data;
- s->buf = &ptr;
- s->buf_size = pkt->size;
-
- if (check_size(s, 8))
- goto fail;
-
- // write header
- bytestream_put_le16(&ptr, 0x4949);
- bytestream_put_le16(&ptr, 42);
-
- offset = ptr;
- bytestream_put_le32(&ptr, 0);
-
- av_fast_padded_mallocz(&s->strip_sizes , &s->strip_sizes_size , sizeof(s->strip_sizes [0]) * strips);
- av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips);
-
- if (!s->strip_sizes || !s->strip_offsets) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
- s->subsampling[0] * s->subsampling[1] + 7) >> 3;
- if (is_yuv) {
- av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
- if (s->yuv_line == NULL) {
- av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- }
-
-#if CONFIG_ZLIB
- if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
- uint8_t *zbuf;
- int zlen, zn;
- int j;
-
- zlen = bytes_per_row * s->rps;
- zbuf = av_malloc(zlen);
- if (!zbuf) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- s->strip_offsets[0] = ptr - pkt->data;
- zn = 0;
- for (j = 0; j < s->rps; j++) {
- if (is_yuv) {
- pack_yuv(s, p, s->yuv_line, j);
- memcpy(zbuf + zn, s->yuv_line, bytes_per_row);
- j += s->subsampling[1] - 1;
- } else
- memcpy(zbuf + j * bytes_per_row,
- p->data[0] + j * p->linesize[0], bytes_per_row);
- zn += bytes_per_row;
- }
- ret = encode_strip(s, zbuf, ptr, zn, s->compr);
- av_free(zbuf);
- if (ret < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
- goto fail;
- }
- ptr += ret;
- s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0];
- } else
-#endif
- {
- if (s->compr == TIFF_LZW) {
- s->lzws = av_malloc(ff_lzw_encode_state_size);
- if (!s->lzws) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- }
- for (i = 0; i < s->height; i++) {
- if (s->strip_sizes[i / s->rps] == 0) {
- if (s->compr == TIFF_LZW) {
- ff_lzw_encode_init(s->lzws, ptr,
- s->buf_size - (*s->buf - s->buf_start),
- 12, FF_LZW_TIFF, put_bits);
- }
- s->strip_offsets[i / s->rps] = ptr - pkt->data;
- }
- if (is_yuv) {
- pack_yuv(s, p, s->yuv_line, i);
- ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr);
- i += s->subsampling[1] - 1;
- } else
- ret = encode_strip(s, p->data[0] + i * p->linesize[0],
- ptr, bytes_per_row, s->compr);
- if (ret < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
- goto fail;
- }
- s->strip_sizes[i / s->rps] += ret;
- ptr += ret;
- if (s->compr == TIFF_LZW &&
- (i == s->height - 1 || i % s->rps == s->rps - 1)) {
- ret = ff_lzw_encode_flush(s->lzws, flush_put_bits);
- s->strip_sizes[(i / s->rps)] += ret;
- ptr += ret;
- }
- }
- if (s->compr == TIFF_LZW)
- av_free(s->lzws);
- }
-
- s->num_entries = 0;
-
- add_entry1(s, TIFF_SUBFILE, TIFF_LONG, 0);
- add_entry1(s, TIFF_WIDTH, TIFF_LONG, s->width);
- add_entry1(s, TIFF_HEIGHT, TIFF_LONG, s->height);
-
- if (s->bpp_tab_size)
- add_entry(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab);
-
- add_entry1(s, TIFF_COMPR, TIFF_SHORT, s->compr);
- add_entry1(s, TIFF_INVERT, TIFF_SHORT, s->photometric_interpretation);
- add_entry(s, TIFF_STRIP_OFFS, TIFF_LONG, strips, s->strip_offsets);
-
- if (s->bpp_tab_size)
- add_entry1(s, TIFF_SAMPLES_PER_PIXEL, TIFF_SHORT, s->bpp_tab_size);
-
- add_entry1(s, TIFF_ROWSPERSTRIP, TIFF_LONG, s->rps);
- add_entry(s, TIFF_STRIP_SIZE, TIFF_LONG, strips, s->strip_sizes);
- add_entry(s, TIFF_XRES, TIFF_RATIONAL, 1, res);
- add_entry(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
- add_entry1(s, TIFF_RES_UNIT, TIFF_SHORT, 2);
-
- if (!(avctx->flags & CODEC_FLAG_BITEXACT))
- add_entry(s, TIFF_SOFTWARE_NAME, TIFF_STRING,
- strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
-
- if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
- uint16_t pal[256 * 3];
- for (i = 0; i < 256; i++) {
- uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
- pal[i] = ((rgb >> 16) & 0xff) * 257;
- pal[i + 256] = ((rgb >> 8) & 0xff) * 257;
- pal[i + 512] = (rgb & 0xff) * 257;
- }
- add_entry(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
- }
- if (alpha)
- add_entry1(s,TIFF_EXTRASAMPLES, TIFF_SHORT, 2);
- if (is_yuv) {
- /** according to CCIR Recommendation 601.1 */
- uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 };
- add_entry(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT, 2, s->subsampling);
- if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)
- add_entry1(s, TIFF_YCBCR_POSITIONING, TIFF_SHORT, 2);
- add_entry(s, TIFF_REFERENCE_BW, TIFF_RATIONAL, 6, refbw);
- }
- // write offset to dir
- bytestream_put_le32(&offset, ptr - pkt->data);
-
- if (check_size(s, 6 + s->num_entries * 12)) {
- ret = AVERROR(EINVAL);
- goto fail;
- }
- bytestream_put_le16(&ptr, s->num_entries); // write tag count
- bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
- bytestream_put_le32(&ptr, 0);
-
- pkt->size = ptr - pkt->data;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
-fail:
- return ret < 0 ? ret : 0;
-}
-
-static av_cold int encode_init(AVCodecContext *avctx)
-{
- TiffEncoderContext *s = avctx->priv_data;
-
- avctx->coded_frame = av_frame_alloc();
- if (!avctx->coded_frame)
- return AVERROR(ENOMEM);
-
- avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
- avctx->coded_frame->key_frame = 1;
- s->avctx = avctx;
-
- return 0;
-}
-
-static av_cold int encode_close(AVCodecContext *avctx)
-{
- TiffEncoderContext *s = avctx->priv_data;
-
- av_frame_free(&avctx->coded_frame);
- av_freep(&s->strip_sizes);
- av_freep(&s->strip_offsets);
- av_freep(&s->yuv_line);
-
- return 0;
-}
-
-#define OFFSET(x) offsetof(TiffEncoderContext, x)
-#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
- {"dpi", "set the image resolution (in dpi)", OFFSET(dpi), AV_OPT_TYPE_INT, {.i64 = 72}, 1, 0x10000, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
- { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
- { "packbits", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0, 0, VE, "compression_algo" },
- { "raw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW }, 0, 0, VE, "compression_algo" },
- { "lzw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW }, 0, 0, VE, "compression_algo" },
-#if CONFIG_ZLIB
- { "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, "compression_algo" },
-#endif
- { NULL },
-};
-
-static const AVClass tiffenc_class = {
- .class_name = "TIFF encoder",
- .item_name = av_default_item_name,
- .option = options,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-AVCodec ff_tiff_encoder = {
- .name = "tiff",
- .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_TIFF,
- .priv_data_size = sizeof(TiffEncoderContext),
- .init = encode_init,
- .close = encode_close,
- .encode2 = encode_frame,
- .pix_fmts = (const enum AVPixelFormat[]) {
- AV_PIX_FMT_RGB24, AV_PIX_FMT_PAL8, AV_PIX_FMT_GRAY8,
- AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE,
- AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_MONOWHITE,
- AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
- AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_RGB48LE,
- AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE,
- AV_PIX_FMT_NONE
- },
- .priv_class = &tiffenc_class,
-};
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