diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/tiffenc.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/tiffenc.c | 461 |
1 files changed, 0 insertions, 461 deletions
diff --git a/contrib/ffmpeg/libavcodec/tiffenc.c b/contrib/ffmpeg/libavcodec/tiffenc.c deleted file mode 100644 index 69f8e59f6..000000000 --- a/contrib/ffmpeg/libavcodec/tiffenc.c +++ /dev/null @@ -1,461 +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 - */ - -/** - * TIFF image encoder - * @file tiffenc.c - * @author Bartlomiej Wolowiec - */ -#include "avcodec.h" -#ifdef CONFIG_ZLIB -#include <zlib.h> -#endif -#include "bytestream.h" -#include "tiff.h" -#include "rle.h" -#include "lzw.h" - -#define TIFF_MAX_ENTRY 32 - -/** sizes of various TIFF field types (string size = 1)*/ -static const uint8_t type_sizes2[6] = { - 0, 1, 1, 2, 4, 8 -}; - -typedef struct TiffEncoderContext { - AVCodecContext *avctx; - AVFrame picture; - - 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 - int rps; ///< row per strip - uint8_t entries[TIFF_MAX_ENTRY*12]; ///< entires in header - int num_entries; ///< number of entires - 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 -} TiffEncoderContext; - - -/** - * Check free space in buffer - * @param s Tiff context - * @param need Needed bytes - * @return 0 - ok, 1 - no free space - */ -inline static 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; -#ifdef WORDS_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; - - assert(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] * 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 * 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 returned - */ -static int encode_strip(TiffEncoderContext * s, const int8_t * src, - uint8_t * dst, int n, int compr) -{ - - switch (compr) { -#ifdef 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, uint8_t * dst, int lnum) -{ - AVFrame *p = &s->picture; - 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]]; - 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, unsigned char *buf, - int buf_size, void *data) -{ - TiffEncoderContext *s = avctx->priv_data; - AVFrame *pict = data; - AVFrame *const p = (AVFrame *) & s->picture; - int i; - int n; - uint8_t *ptr = buf; - uint8_t *offset; - uint32_t strips; - uint32_t *strip_sizes = NULL; - uint32_t *strip_offsets = NULL; - int bytes_per_row; - uint32_t res[2] = { 72, 1 }; // image resolution (72/1) - static const uint16_t bpp_tab[] = { 8, 8, 8, 8 }; - int ret = -1; - int is_yuv = 0; - uint8_t *yuv_line = NULL; - int shift_h, shift_v; - - s->buf_start = buf; - s->buf = &ptr; - s->buf_size = buf_size; - - *p = *pict; - p->pict_type = FF_I_TYPE; - p->key_frame = 1; - - s->compr = TIFF_PACKBITS; - if (avctx->compression_level == 0) { - s->compr = TIFF_RAW; - } else if(avctx->compression_level == 2) { - s->compr = TIFF_LZW; -#ifdef CONFIG_ZLIB - } else if ((avctx->compression_level >= 3)) { - s->compr = TIFF_DEFLATE; -#endif - } - - s->width = avctx->width; - s->height = avctx->height; - s->subsampling[0] = 1; - s->subsampling[1] = 1; - - switch (avctx->pix_fmt) { - case PIX_FMT_RGB24: - s->bpp = 24; - s->photometric_interpretation = 2; - break; - case PIX_FMT_GRAY8: - s->bpp = 8; - s->photometric_interpretation = 1; - break; - case PIX_FMT_PAL8: - s->bpp = 8; - s->photometric_interpretation = 3; - break; - case PIX_FMT_MONOBLACK: - s->bpp = 1; - s->photometric_interpretation = 1; - break; - case PIX_FMT_MONOWHITE: - s->bpp = 1; - s->photometric_interpretation = 0; - break; - case PIX_FMT_YUV420P: - case PIX_FMT_YUV422P: - case PIX_FMT_YUV444P: - case PIX_FMT_YUV410P: - case PIX_FMT_YUV411P: - s->photometric_interpretation = 6; - avcodec_get_chroma_sub_sample(avctx->pix_fmt, - &shift_h, &shift_v); - s->bpp = 8 + (16 >> (shift_h + shift_v)); - s->subsampling[0] = 1 << shift_h; - s->subsampling[1] = 1 << shift_v; - s->bpp_tab_size = 3; - is_yuv = 1; - break; - default: - av_log(s->avctx, AV_LOG_ERROR, - "This colors format is not supported\n"); - return -1; - } - if (!is_yuv) - s->bpp_tab_size = (s->bpp >> 3); - - if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE || s->compr == TIFF_LZW) - //best choose for DEFLATE - s->rps = s->height; - else - s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1); // suggest size of strip - s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1]; // round rps up - - strips = (s->height - 1) / s->rps + 1; - - 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); - - strip_sizes = av_mallocz(sizeof(*strip_sizes) * strips); - strip_offsets = av_mallocz(sizeof(*strip_offsets) * strips); - - bytes_per_row = (((s->width - 1)/s->subsampling[0] + 1) * s->bpp - * s->subsampling[0] * s->subsampling[1] + 7) >> 3; - if (is_yuv){ - yuv_line = av_malloc(bytes_per_row); - if (yuv_line == NULL){ - av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n"); - goto fail; - } - } - -#ifdef 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); - strip_offsets[0] = ptr - buf; - zn = 0; - for (j = 0; j < s->rps; j++) { - if (is_yuv){ - pack_yuv(s, yuv_line, j); - memcpy(zbuf + zn, 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; - } - n = encode_strip(s, zbuf, ptr, zn, s->compr); - av_free(zbuf); - if (n<0) { - av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n"); - goto fail; - } - ptr += n; - strip_sizes[0] = ptr - buf - strip_offsets[0]; - } else -#endif - { - if(s->compr == TIFF_LZW) - s->lzws = av_malloc(ff_lzw_encode_state_size); - for (i = 0; i < s->height; i++) { - if (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); - } - strip_offsets[i / s->rps] = ptr - buf; - } - if (is_yuv){ - pack_yuv(s, yuv_line, i); - n = encode_strip(s, yuv_line, ptr, bytes_per_row, s->compr); - i += s->subsampling[1] - 1; - } - else - n = encode_strip(s, p->data[0] + i * p->linesize[0], - ptr, bytes_per_row, s->compr); - if (n < 0) { - av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n"); - goto fail; - } - strip_sizes[i / s->rps] += n; - ptr += n; - if(s->compr == TIFF_LZW && (i==s->height-1 || i%s->rps == s->rps-1)){ - int ret; - ret = ff_lzw_encode_flush(s->lzws); - 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, 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, 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 == 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 (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); - add_entry(s, TIFF_REFERENCE_BW, TIFF_RATIONAL, 6, refbw); - } - bytestream_put_le32(&offset, ptr - buf); // write offset to dir - - if (check_size(s, 6 + s->num_entries * 12)) - 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); - - ret = ptr - buf; - -fail: - av_free(strip_sizes); - av_free(strip_offsets); - av_free(yuv_line); - return ret; -} - -AVCodec tiff_encoder = { - "tiff", - CODEC_TYPE_VIDEO, - CODEC_ID_TIFF, - sizeof(TiffEncoderContext), - NULL, - encode_frame, - NULL, - NULL, - 0, - NULL, - .pix_fmts = - (enum PixelFormat[]) {PIX_FMT_RGB24, PIX_FMT_PAL8, PIX_FMT_GRAY8, - PIX_FMT_MONOBLACK, PIX_FMT_MONOWHITE, - PIX_FMT_YUV420P, PIX_FMT_YUV422P, - PIX_FMT_YUV444P, PIX_FMT_YUV410P, - PIX_FMT_YUV411P - -1} - -}; 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