yading@10: /*
yading@10:  * TIFF image encoder
yading@10:  * Copyright (c) 2007 Bartlomiej Wolowiec
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * TIFF image encoder
yading@10:  * @author Bartlomiej Wolowiec
yading@10:  */
yading@10: 
yading@10: #include "libavutil/imgutils.h"
yading@10: #include "libavutil/log.h"
yading@10: #include "libavutil/opt.h"
yading@10: #include "libavutil/pixdesc.h"
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "config.h"
yading@10: #if CONFIG_ZLIB
yading@10: #include <zlib.h>
yading@10: #endif
yading@10: #include "bytestream.h"
yading@10: #include "internal.h"
yading@10: #include "tiff.h"
yading@10: #include "rle.h"
yading@10: #include "lzw.h"
yading@10: #include "put_bits.h"
yading@10: 
yading@10: #define TIFF_MAX_ENTRY 32
yading@10: 
yading@10: /** sizes of various TIFF field types (string size = 1)*/
yading@10: static const uint8_t type_sizes2[14] = {
yading@10:     0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 4
yading@10: };
yading@10: 
yading@10: typedef struct TiffEncoderContext {
yading@10:     AVClass *class;                     ///< for private options
yading@10:     AVCodecContext *avctx;
yading@10:     AVFrame picture;
yading@10: 
yading@10:     int width;                          ///< picture width
yading@10:     int height;                         ///< picture height
yading@10:     unsigned int bpp;                   ///< bits per pixel
yading@10:     int compr;                          ///< compression level
yading@10:     int bpp_tab_size;                   ///< bpp_tab size
yading@10:     int photometric_interpretation;     ///< photometric interpretation
yading@10:     int strips;                         ///< number of strips
yading@10:     uint32_t *strip_sizes;
yading@10:     unsigned int strip_sizes_size;
yading@10:     uint32_t *strip_offsets;
yading@10:     unsigned int strip_offsets_size;
yading@10:     uint8_t *yuv_line;
yading@10:     unsigned int yuv_line_size;
yading@10:     int rps;                            ///< row per strip
yading@10:     uint8_t entries[TIFF_MAX_ENTRY*12]; ///< entires in header
yading@10:     int num_entries;                    ///< number of entires
yading@10:     uint8_t **buf;                      ///< actual position in buffer
yading@10:     uint8_t *buf_start;                 ///< pointer to first byte in buffer
yading@10:     int buf_size;                       ///< buffer size
yading@10:     uint16_t subsampling[2];            ///< YUV subsampling factors
yading@10:     struct LZWEncodeState *lzws;        ///< LZW Encode state
yading@10:     uint32_t dpi;                       ///< image resolution in DPI
yading@10: } TiffEncoderContext;
yading@10: 
yading@10: 
yading@10: /**
yading@10:  * Check free space in buffer.
yading@10:  *
yading@10:  * @param s Tiff context
yading@10:  * @param need Needed bytes
yading@10:  * @return 0 - ok, 1 - no free space
yading@10:  */
yading@10: static inline int check_size(TiffEncoderContext * s, uint64_t need)
yading@10: {
yading@10:     if (s->buf_size < *s->buf - s->buf_start + need) {
yading@10:         *s->buf = s->buf_start + s->buf_size + 1;
yading@10:         av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
yading@10:         return 1;
yading@10:     }
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: /**
yading@10:  * Put n values to buffer.
yading@10:  *
yading@10:  * @param p pointer to pointer to output buffer
yading@10:  * @param n number of values
yading@10:  * @param val pointer to values
yading@10:  * @param type type of values
yading@10:  * @param flip = 0 - normal copy, >0 - flip
yading@10:  */
yading@10: static void tnput(uint8_t ** p, int n, const uint8_t * val, enum TiffTypes type,
yading@10:                   int flip)
yading@10: {
yading@10:     int i;
yading@10: #if HAVE_BIGENDIAN
yading@10:     flip ^= ((int[]) {0, 0, 0, 1, 3, 3})[type];
yading@10: #endif
yading@10:     for (i = 0; i < n * type_sizes2[type]; i++)
yading@10:         *(*p)++ = val[i ^ flip];
yading@10: }
yading@10: 
yading@10: /**
yading@10:  * Add entry to directory in tiff header.
yading@10:  *
yading@10:  * @param s Tiff context
yading@10:  * @param tag tag that identifies the entry
yading@10:  * @param type entry type
yading@10:  * @param count the number of values
yading@10:  * @param ptr_val pointer to values
yading@10:  */
yading@10: static void add_entry(TiffEncoderContext * s,
yading@10:                       enum TiffTags tag, enum TiffTypes type, int count,
yading@10:                       const void *ptr_val)
yading@10: {
yading@10:     uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
yading@10: 
yading@10:     av_assert0(s->num_entries < TIFF_MAX_ENTRY);
yading@10: 
yading@10:     bytestream_put_le16(&entries_ptr, tag);
yading@10:     bytestream_put_le16(&entries_ptr, type);
yading@10:     bytestream_put_le32(&entries_ptr, count);
yading@10: 
yading@10:     if (type_sizes[type] * (int64_t)count <= 4) {
yading@10:         tnput(&entries_ptr, count, ptr_val, type, 0);
yading@10:     } else {
yading@10:         bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
yading@10:         check_size(s, count * (int64_t)type_sizes2[type]);
yading@10:         tnput(s->buf, count, ptr_val, type, 0);
yading@10:     }
yading@10: 
yading@10:     s->num_entries++;
yading@10: }
yading@10: 
yading@10: static void add_entry1(TiffEncoderContext * s,
yading@10:                        enum TiffTags tag, enum TiffTypes type, int val){
yading@10:     uint16_t w = val;
yading@10:     uint32_t dw= val;
yading@10:     add_entry(s, tag, type, 1, type == TIFF_SHORT ? (void *)&w : (void *)&dw);
yading@10: }
yading@10: 
yading@10: /**
yading@10:  * Encode one strip in tiff file.
yading@10:  *
yading@10:  * @param s Tiff context
yading@10:  * @param src input buffer
yading@10:  * @param dst output buffer
yading@10:  * @param n size of input buffer
yading@10:  * @param compr compression method
yading@10:  * @return number of output bytes. If an output error is encountered, -1 is returned
yading@10:  */
yading@10: static int encode_strip(TiffEncoderContext * s, const int8_t * src,
yading@10:                         uint8_t * dst, int n, int compr)
yading@10: {
yading@10: 
yading@10:     switch (compr) {
yading@10: #if CONFIG_ZLIB
yading@10:     case TIFF_DEFLATE:
yading@10:     case TIFF_ADOBE_DEFLATE:
yading@10:         {
yading@10:             unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
yading@10:             if (compress(dst, &zlen, src, n) != Z_OK) {
yading@10:                 av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
yading@10:                 return -1;
yading@10:             }
yading@10:             return zlen;
yading@10:         }
yading@10: #endif
yading@10:     case TIFF_RAW:
yading@10:         if (check_size(s, n))
yading@10:             return -1;
yading@10:         memcpy(dst, src, n);
yading@10:         return n;
yading@10:     case TIFF_PACKBITS:
yading@10:         return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start), src, 1, n, 2, 0xff, -1, 0);
yading@10:     case TIFF_LZW:
yading@10:         return ff_lzw_encode(s->lzws, src, n);
yading@10:     default:
yading@10:         return -1;
yading@10:     }
yading@10: }
yading@10: 
yading@10: static void pack_yuv(TiffEncoderContext * s, uint8_t * dst, int lnum)
yading@10: {
yading@10:     AVFrame *p = &s->picture;
yading@10:     int i, j, k;
yading@10:     int w = (s->width - 1) / s->subsampling[0] + 1;
yading@10:     uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
yading@10:     uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
yading@10:     if(s->width % s->subsampling[0] || s->height % s->subsampling[1]){
yading@10:         for (i = 0; i < w; i++){
yading@10:             for (j = 0; j < s->subsampling[1]; j++)
yading@10:                 for (k = 0; k < s->subsampling[0]; k++)
yading@10:                     *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
yading@10:                                         FFMIN(i * s->subsampling[0] + k, s->width-1)];
yading@10:             *dst++ = *pu++;
yading@10:             *dst++ = *pv++;
yading@10:         }
yading@10:     }else{
yading@10:         for (i = 0; i < w; i++){
yading@10:             for (j = 0; j < s->subsampling[1]; j++)
yading@10:                 for (k = 0; k < s->subsampling[0]; k++)
yading@10:                     *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
yading@10:                                         i * s->subsampling[0] + k];
yading@10:             *dst++ = *pu++;
yading@10:             *dst++ = *pv++;
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static av_cold int encode_init(AVCodecContext *avctx)
yading@10: {
yading@10:     TiffEncoderContext *s = avctx->priv_data;
yading@10: 
yading@10:     avctx->coded_frame= &s->picture;
yading@10:     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
yading@10:     avctx->coded_frame->key_frame = 1;
yading@10:     s->avctx = avctx;
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
yading@10:                         const AVFrame *pict, int *got_packet)
yading@10: {
yading@10:     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
yading@10:     TiffEncoderContext *s = avctx->priv_data;
yading@10:     AVFrame *const p = &s->picture;
yading@10:     int i;
yading@10:     uint8_t *ptr;
yading@10:     uint8_t *offset;
yading@10:     uint32_t strips;
yading@10:     int bytes_per_row;
yading@10:     uint32_t res[2] = { s->dpi, 1 };        // image resolution (72/1)
yading@10:     uint16_t bpp_tab[4];
yading@10:     int ret = -1;
yading@10:     int is_yuv = 0, alpha = 0;
yading@10:     int shift_h, shift_v;
yading@10: 
yading@10:     *p = *pict;
yading@10: 
yading@10:     s->width = avctx->width;
yading@10:     s->height = avctx->height;
yading@10:     s->subsampling[0] = 1;
yading@10:     s->subsampling[1] = 1;
yading@10: 
yading@10:     avctx->bits_per_coded_sample =
yading@10:     s->bpp = av_get_bits_per_pixel(desc);
yading@10:     s->bpp_tab_size = desc->nb_components;
yading@10: 
yading@10:     switch (avctx->pix_fmt) {
yading@10:     case AV_PIX_FMT_RGBA64LE:
yading@10:     case AV_PIX_FMT_RGBA:
yading@10:         alpha = 1;
yading@10:     case AV_PIX_FMT_RGB48LE:
yading@10:     case AV_PIX_FMT_RGB24:
yading@10:         s->photometric_interpretation = 2;
yading@10:         break;
yading@10:     case AV_PIX_FMT_GRAY8:
yading@10:         avctx->bits_per_coded_sample = 0x28;
yading@10:     case AV_PIX_FMT_GRAY8A:
yading@10:         alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A;
yading@10:     case AV_PIX_FMT_GRAY16LE:
yading@10:     case AV_PIX_FMT_MONOBLACK:
yading@10:         s->photometric_interpretation = 1;
yading@10:         break;
yading@10:     case AV_PIX_FMT_PAL8:
yading@10:         s->photometric_interpretation = 3;
yading@10:         break;
yading@10:     case AV_PIX_FMT_MONOWHITE:
yading@10:         s->photometric_interpretation = 0;
yading@10:         break;
yading@10:     case AV_PIX_FMT_YUV420P:
yading@10:     case AV_PIX_FMT_YUV422P:
yading@10:     case AV_PIX_FMT_YUV440P:
yading@10:     case AV_PIX_FMT_YUV444P:
yading@10:     case AV_PIX_FMT_YUV410P:
yading@10:     case AV_PIX_FMT_YUV411P:
yading@10:         s->photometric_interpretation = 6;
yading@10:         avcodec_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
yading@10:         s->subsampling[0] = 1 << shift_h;
yading@10:         s->subsampling[1] = 1 << shift_v;
yading@10:         is_yuv = 1;
yading@10:         break;
yading@10:     default:
yading@10:         av_log(s->avctx, AV_LOG_ERROR,
yading@10:                "This colors format is not supported\n");
yading@10:         return -1;
yading@10:     }
yading@10: 
yading@10:     for (i = 0; i < s->bpp_tab_size; i++)
yading@10:         bpp_tab[i] = desc->comp[i].depth_minus1 + 1;
yading@10: 
yading@10:     if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE || s->compr == TIFF_LZW)
yading@10:         //best choose for DEFLATE
yading@10:         s->rps = s->height;
yading@10:     else
yading@10:         s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);     // suggest size of strip
yading@10:     s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1]; // round rps up
yading@10: 
yading@10:     strips = (s->height - 1) / s->rps + 1;
yading@10: 
yading@10:     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * s->bpp * 2 +
yading@10:                                   avctx->height * 4 + FF_MIN_BUFFER_SIZE)) < 0)
yading@10:         return ret;
yading@10:     ptr          = pkt->data;
yading@10:     s->buf_start = pkt->data;
yading@10:     s->buf       = &ptr;
yading@10:     s->buf_size  = pkt->size;
yading@10: 
yading@10:     if (check_size(s, 8))
yading@10:         goto fail;
yading@10: 
yading@10:     // write header
yading@10:     bytestream_put_le16(&ptr, 0x4949);
yading@10:     bytestream_put_le16(&ptr, 42);
yading@10: 
yading@10:     offset = ptr;
yading@10:     bytestream_put_le32(&ptr, 0);
yading@10: 
yading@10:     av_fast_padded_mallocz(&s->strip_sizes, &s->strip_sizes_size, sizeof(s->strip_sizes[0]) * strips);
yading@10:     av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips);
yading@10: 
yading@10:     if (!s->strip_sizes || !s->strip_offsets) {
yading@10:         ret = AVERROR(ENOMEM);
yading@10:         goto fail;
yading@10:     }
yading@10: 
yading@10:     bytes_per_row = (((s->width - 1)/s->subsampling[0] + 1) * s->bpp
yading@10:                     * s->subsampling[0] * s->subsampling[1] + 7) >> 3;
yading@10:     if (is_yuv){
yading@10:         av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
yading@10:         if (s->yuv_line == NULL){
yading@10:             av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
yading@10:             ret = AVERROR(ENOMEM);
yading@10:             goto fail;
yading@10:         }
yading@10:     }
yading@10: 
yading@10: #if CONFIG_ZLIB
yading@10:     if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
yading@10:         uint8_t *zbuf;
yading@10:         int zlen, zn;
yading@10:         int j;
yading@10: 
yading@10:         zlen = bytes_per_row * s->rps;
yading@10:         zbuf = av_malloc(zlen);
yading@10:         if (!zbuf) {
yading@10:             ret = AVERROR(ENOMEM);
yading@10:             goto fail;
yading@10:         }
yading@10:         s->strip_offsets[0] = ptr - pkt->data;
yading@10:         zn = 0;
yading@10:         for (j = 0; j < s->rps; j++) {
yading@10:             if (is_yuv){
yading@10:                 pack_yuv(s, s->yuv_line, j);
yading@10:                 memcpy(zbuf + zn, s->yuv_line, bytes_per_row);
yading@10:                 j += s->subsampling[1] - 1;
yading@10:             }
yading@10:             else
yading@10:                 memcpy(zbuf + j * bytes_per_row,
yading@10:                        p->data[0] + j * p->linesize[0], bytes_per_row);
yading@10:             zn += bytes_per_row;
yading@10:         }
yading@10:         ret = encode_strip(s, zbuf, ptr, zn, s->compr);
yading@10:         av_free(zbuf);
yading@10:         if (ret < 0) {
yading@10:             av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
yading@10:             goto fail;
yading@10:         }
yading@10:         ptr += ret;
yading@10:         s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0];
yading@10:     } else
yading@10: #endif
yading@10:     {
yading@10:         if (s->compr == TIFF_LZW) {
yading@10:             s->lzws = av_malloc(ff_lzw_encode_state_size);
yading@10:             if (!s->lzws) {
yading@10:                 ret = AVERROR(ENOMEM);
yading@10:                 goto fail;
yading@10:             }
yading@10:         }
yading@10:         for (i = 0; i < s->height; i++) {
yading@10:             if (s->strip_sizes[i / s->rps] == 0) {
yading@10:                 if(s->compr == TIFF_LZW){
yading@10:                     ff_lzw_encode_init(s->lzws, ptr, s->buf_size - (*s->buf - s->buf_start),
yading@10:                                        12, FF_LZW_TIFF, put_bits);
yading@10:                 }
yading@10:                 s->strip_offsets[i / s->rps] = ptr - pkt->data;
yading@10:             }
yading@10:             if (is_yuv){
yading@10:                  pack_yuv(s, s->yuv_line, i);
yading@10:                  ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr);
yading@10:                  i += s->subsampling[1] - 1;
yading@10:             }
yading@10:             else
yading@10:                 ret = encode_strip(s, p->data[0] + i * p->linesize[0],
yading@10:                         ptr, bytes_per_row, s->compr);
yading@10:             if (ret < 0) {
yading@10:                 av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
yading@10:                 goto fail;
yading@10:             }
yading@10:             s->strip_sizes[i / s->rps] += ret;
yading@10:             ptr += ret;
yading@10:             if(s->compr == TIFF_LZW && (i==s->height-1 || i%s->rps == s->rps-1)){
yading@10:                 ret = ff_lzw_encode_flush(s->lzws, flush_put_bits);
yading@10:                 s->strip_sizes[(i / s->rps )] += ret ;
yading@10:                 ptr += ret;
yading@10:             }
yading@10:         }
yading@10:         if(s->compr == TIFF_LZW)
yading@10:             av_free(s->lzws);
yading@10:     }
yading@10: 
yading@10:     s->num_entries = 0;
yading@10: 
yading@10:     add_entry1(s,TIFF_SUBFILE,           TIFF_LONG,             0);
yading@10:     add_entry1(s,TIFF_WIDTH,             TIFF_LONG,             s->width);
yading@10:     add_entry1(s,TIFF_HEIGHT,            TIFF_LONG,             s->height);
yading@10: 
yading@10:     if (s->bpp_tab_size)
yading@10:     add_entry(s, TIFF_BPP,               TIFF_SHORT,    s->bpp_tab_size, bpp_tab);
yading@10: 
yading@10:     add_entry1(s,TIFF_COMPR,             TIFF_SHORT,            s->compr);
yading@10:     add_entry1(s,TIFF_INVERT,            TIFF_SHORT,            s->photometric_interpretation);
yading@10:     add_entry(s, TIFF_STRIP_OFFS,        TIFF_LONG,     strips, s->strip_offsets);
yading@10: 
yading@10:     if (s->bpp_tab_size)
yading@10:     add_entry1(s,TIFF_SAMPLES_PER_PIXEL, TIFF_SHORT,            s->bpp_tab_size);
yading@10: 
yading@10:     add_entry1(s,TIFF_ROWSPERSTRIP,      TIFF_LONG,             s->rps);
yading@10:     add_entry(s, TIFF_STRIP_SIZE,        TIFF_LONG,     strips, s->strip_sizes);
yading@10:     add_entry(s, TIFF_XRES,              TIFF_RATIONAL, 1,      res);
yading@10:     add_entry(s, TIFF_YRES,              TIFF_RATIONAL, 1,      res);
yading@10:     add_entry1(s,TIFF_RES_UNIT,          TIFF_SHORT,            2);
yading@10: 
yading@10:     if(!(avctx->flags & CODEC_FLAG_BITEXACT))
yading@10:     add_entry(s, TIFF_SOFTWARE_NAME,     TIFF_STRING,
yading@10:               strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
yading@10: 
yading@10:     if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
yading@10:         uint16_t pal[256 * 3];
yading@10:         for (i = 0; i < 256; i++) {
yading@10:             uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
yading@10:             pal[i]       = ((rgb >> 16) & 0xff) * 257;
yading@10:             pal[i + 256] = ((rgb >> 8 ) & 0xff) * 257;
yading@10:             pal[i + 512] = ( rgb        & 0xff) * 257;
yading@10:         }
yading@10:         add_entry(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
yading@10:     }
yading@10:     if (alpha)
yading@10:         add_entry1(s,TIFF_EXTRASAMPLES,      TIFF_SHORT,            2);
yading@10:     if (is_yuv){
yading@10:         /** according to CCIR Recommendation 601.1 */
yading@10:         uint32_t refbw[12] = {15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1};
yading@10:         add_entry(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT,    2, s->subsampling);
yading@10:         if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)
yading@10:             add_entry1(s, TIFF_YCBCR_POSITIONING, TIFF_SHORT, 2);
yading@10:         add_entry(s, TIFF_REFERENCE_BW,      TIFF_RATIONAL, 6, refbw);
yading@10:     }
yading@10:     bytestream_put_le32(&offset, ptr - pkt->data);    // write offset to dir
yading@10: 
yading@10:     if (check_size(s, 6 + s->num_entries * 12)) {
yading@10:         ret = AVERROR(EINVAL);
yading@10:         goto fail;
yading@10:     }
yading@10:     bytestream_put_le16(&ptr, s->num_entries);  // write tag count
yading@10:     bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
yading@10:     bytestream_put_le32(&ptr, 0);
yading@10: 
yading@10:     pkt->size   = ptr - pkt->data;
yading@10:     pkt->flags |= AV_PKT_FLAG_KEY;
yading@10:     *got_packet = 1;
yading@10: 
yading@10: fail:
yading@10:     return ret < 0 ? ret : 0;
yading@10: }
yading@10: 
yading@10: static av_cold int encode_close(AVCodecContext *avctx)
yading@10: {
yading@10:     TiffEncoderContext *s = avctx->priv_data;
yading@10: 
yading@10:     av_freep(&s->strip_sizes);
yading@10:     av_freep(&s->strip_offsets);
yading@10:     av_freep(&s->yuv_line);
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: #define OFFSET(x) offsetof(TiffEncoderContext, x)
yading@10: #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
yading@10: static const AVOption options[] = {
yading@10:     {"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},
yading@10:     { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT, {.i64 = TIFF_PACKBITS}, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
yading@10:     { "packbits", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = TIFF_PACKBITS}, 0, 0, VE, "compression_algo" },
yading@10:     { "raw",      NULL, 0, AV_OPT_TYPE_CONST, {.i64 = TIFF_RAW},      0, 0, VE, "compression_algo" },
yading@10:     { "lzw",      NULL, 0, AV_OPT_TYPE_CONST, {.i64 = TIFF_LZW},      0, 0, VE, "compression_algo" },
yading@10: #if CONFIG_ZLIB
yading@10:     { "deflate",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = TIFF_DEFLATE},  0, 0, VE, "compression_algo" },
yading@10: #endif
yading@10:     { NULL },
yading@10: };
yading@10: 
yading@10: static const AVClass tiffenc_class = {
yading@10:     .class_name = "TIFF encoder",
yading@10:     .item_name  = av_default_item_name,
yading@10:     .option     = options,
yading@10:     .version    = LIBAVUTIL_VERSION_INT,
yading@10: };
yading@10: 
yading@10: AVCodec ff_tiff_encoder = {
yading@10:     .name           = "tiff",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_TIFF,
yading@10:     .priv_data_size = sizeof(TiffEncoderContext),
yading@10:     .init           = encode_init,
yading@10:     .encode2        = encode_frame,
yading@10:     .close          = encode_close,
yading@10:     .pix_fmts       = (const enum AVPixelFormat[]) {
yading@10:         AV_PIX_FMT_RGB24, AV_PIX_FMT_PAL8, AV_PIX_FMT_GRAY8,
yading@10:         AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE,
yading@10:         AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_MONOWHITE,
yading@10:         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
yading@10:         AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_RGB48LE,
yading@10:         AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE,
yading@10:         AV_PIX_FMT_NONE
yading@10:     },
yading@10:     .long_name      = NULL_IF_CONFIG_SMALL("TIFF image"),
yading@10:     .priv_class     = &tiffenc_class,
yading@10: };