mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 20:42:49 +08:00
594 lines
20 KiB
C
594 lines
20 KiB
C
/*
|
|
* 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 "codec_internal.h"
|
|
#include "encode.h"
|
|
#include "lzw.h"
|
|
#include "put_bits.h"
|
|
#include "rle.h"
|
|
#include "tiff.h"
|
|
#include "version.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
|
|
enum TiffPhotometric 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 int 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);
|
|
if (check_size(s, count * (int64_t)type_sizes2[type]))
|
|
return AVERROR_INVALIDDATA;
|
|
tnput(s->buf, count, ptr_val, type, 0);
|
|
}
|
|
|
|
s->num_entries++;
|
|
return 0;
|
|
}
|
|
|
|
static int add_entry1(TiffEncoderContext *s,
|
|
enum TiffTags tag, enum TiffTypes type, int val)
|
|
{
|
|
uint16_t w = val;
|
|
uint32_t dw = val;
|
|
return 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, a negative
|
|
* value corresponding to an AVERROR error code 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 AVERROR_EXTERNAL;
|
|
}
|
|
return zlen;
|
|
}
|
|
#endif
|
|
case TIFF_RAW:
|
|
if (check_size(s, n))
|
|
return AVERROR(EINVAL);
|
|
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:
|
|
av_log(s->avctx, AV_LOG_ERROR, "Unsupported compression method: %d\n",
|
|
compr);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
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;
|
|
const uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
|
|
const 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++;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define ADD_ENTRY(s, tag, type, count, ptr_val) \
|
|
do { \
|
|
ret = add_entry(s, tag, type, count, ptr_val); \
|
|
if (ret < 0) \
|
|
goto fail; \
|
|
} while (0)
|
|
|
|
#define ADD_ENTRY1(s, tag, type, val) \
|
|
do { \
|
|
ret = add_entry1(s, tag, type, val); \
|
|
if (ret < 0) \
|
|
goto fail; \
|
|
} while (0)
|
|
|
|
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 = 0;
|
|
int is_yuv = 0, alpha = 0;
|
|
int shift_h, shift_v;
|
|
int packet_size;
|
|
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
s->subsampling[0] = 1;
|
|
s->subsampling[1] = 1;
|
|
|
|
if (!desc)
|
|
return AVERROR(EINVAL);
|
|
|
|
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 = TIFF_PHOTOMETRIC_RGB;
|
|
break;
|
|
case AV_PIX_FMT_GRAY8:
|
|
avctx->bits_per_coded_sample = 0x28;
|
|
case AV_PIX_FMT_GRAY8A:
|
|
case AV_PIX_FMT_YA16LE:
|
|
alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A || avctx->pix_fmt == AV_PIX_FMT_YA16LE;
|
|
case AV_PIX_FMT_GRAY16LE:
|
|
case AV_PIX_FMT_MONOBLACK:
|
|
s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO;
|
|
break;
|
|
case AV_PIX_FMT_PAL8:
|
|
s->photometric_interpretation = TIFF_PHOTOMETRIC_PALETTE;
|
|
break;
|
|
case AV_PIX_FMT_MONOWHITE:
|
|
s->photometric_interpretation = TIFF_PHOTOMETRIC_WHITE_IS_ZERO;
|
|
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 = TIFF_PHOTOMETRIC_YCBCR;
|
|
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 AVERROR(EINVAL);
|
|
}
|
|
|
|
for (i = 0; i < s->bpp_tab_size; i++)
|
|
bpp_tab[i] = desc->comp[i].depth;
|
|
|
|
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;
|
|
|
|
bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
|
|
s->subsampling[0] * s->subsampling[1] + 7) >> 3;
|
|
packet_size = avctx->height * bytes_per_row * 2 +
|
|
avctx->height * 4 + AV_INPUT_BUFFER_MIN_SIZE;
|
|
|
|
if ((ret = ff_alloc_packet(avctx, pkt, packet_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)) {
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
// write header
|
|
bytestream_put_le16(&ptr, 0x4949);
|
|
bytestream_put_le16(&ptr, 42);
|
|
|
|
offset = ptr;
|
|
bytestream_put_le32(&ptr, 0);
|
|
|
|
if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
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;
|
|
}
|
|
|
|
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, 0);
|
|
}
|
|
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);
|
|
s->strip_sizes[(i / s->rps)] += ret;
|
|
ptr += ret;
|
|
}
|
|
}
|
|
if (s->compr == TIFF_LZW)
|
|
av_freep(&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_PHOTOMETRIC, 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);
|
|
if (avctx->sample_aspect_ratio.num > 0 &&
|
|
avctx->sample_aspect_ratio.den > 0) {
|
|
AVRational y = av_mul_q(av_make_q(s->dpi, 1),
|
|
avctx->sample_aspect_ratio);
|
|
res[0] = y.num;
|
|
res[1] = y.den;
|
|
}
|
|
ADD_ENTRY(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
|
|
ADD_ENTRY1(s, TIFF_RES_UNIT, TIFF_SHORT, 2);
|
|
|
|
if (!(avctx->flags & AV_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;
|
|
*got_packet = 1;
|
|
|
|
fail:
|
|
return ret < 0 ? ret : 0;
|
|
}
|
|
|
|
static av_cold int encode_init(AVCodecContext *avctx)
|
|
{
|
|
TiffEncoderContext *s = avctx->priv_data;
|
|
|
|
#if !CONFIG_ZLIB
|
|
if (s->compr == TIFF_DEFLATE) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Deflate compression needs zlib compiled in\n");
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
#endif
|
|
|
|
s->avctx = avctx;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int encode_close(AVCodecContext *avctx)
|
|
{
|
|
TiffEncoderContext *s = avctx->priv_data;
|
|
|
|
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" },
|
|
{ "deflate", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE }, 0, 0, VE, "compression_algo" },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass tiffenc_class = {
|
|
.class_name = "TIFF encoder",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
const FFCodec ff_tiff_encoder = {
|
|
.p.name = "tiff",
|
|
CODEC_LONG_NAME("TIFF image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_TIFF,
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
|
|
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
|
|
.priv_data_size = sizeof(TiffEncoderContext),
|
|
.init = encode_init,
|
|
.close = encode_close,
|
|
FF_CODEC_ENCODE_CB(encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]) {
|
|
AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48LE, AV_PIX_FMT_PAL8,
|
|
AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE,
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_YA16LE,
|
|
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_NONE
|
|
},
|
|
.p.priv_class = &tiffenc_class,
|
|
};
|