static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet) { TiffEncoderContext *s = avctx->priv_data; const AVFrame *const p = pict; int i; uint8_t *ptr; 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) uint16_t bpp_tab[] = { 8, 8, 8, 8 }; int ret = 0; int is_yuv = 0; uint8_t *yuv_line = NULL; int shift_h, shift_v; int packet_size; const AVPixFmtDescriptor *pfd; s->avctx = avctx; s->width = avctx->width; s->height = avctx->height; s->subsampling[0] = 1; s->subsampling[1] = 1; switch (avctx->pix_fmt) { case AV_PIX_FMT_RGB48LE: case AV_PIX_FMT_GRAY16LE: case AV_PIX_FMT_RGBA: case AV_PIX_FMT_RGB24: case AV_PIX_FMT_GRAY8: case AV_PIX_FMT_PAL8: pfd = av_pix_fmt_desc_get(avctx->pix_fmt); s->bpp = av_get_bits_per_pixel(pfd); if (pfd->flags & AV_PIX_FMT_FLAG_PAL) s->photometric_interpretation = TIFF_PHOTOMETRIC_PALETTE; else if (pfd->flags & AV_PIX_FMT_FLAG_RGB) s->photometric_interpretation = TIFF_PHOTOMETRIC_RGB; else s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO; s->bpp_tab_size = pfd->nb_components; for (i = 0; i < s->bpp_tab_size; i++) bpp_tab[i] = s->bpp / s->bpp_tab_size; break; case AV_PIX_FMT_MONOBLACK: s->bpp = 1; s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO; s->bpp_tab_size = 0; break; case AV_PIX_FMT_MONOWHITE: s->bpp = 1; s->photometric_interpretation = TIFF_PHOTOMETRIC_WHITE_IS_ZERO; s->bpp_tab_size = 0; break; case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUV422P: 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->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 (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; packet_size = avctx->height * ((avctx->width * s->bpp + 7) >> 3) * 2 + avctx->height * 4 + FF_MIN_BUFFER_SIZE; if (!pkt->data && (ret = av_new_packet(pkt, packet_size)) < 0) { av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); 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); strip_sizes = av_mallocz_array(strips, sizeof(*strip_sizes)); strip_offsets = av_mallocz_array(strips, sizeof(*strip_offsets)); if (!strip_sizes || !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) { yuv_line = av_malloc(bytes_per_row); if (!yuv_line) { 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; } strip_offsets[0] = ptr - pkt->data; zn = 0; for (j = 0; j < s->rps; j++) { if (is_yuv) { pack_yuv(s, p, 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; } 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; strip_sizes[0] = ptr - pkt->data - 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 (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); } strip_offsets[i / s->rps] = ptr - pkt->data; } if (is_yuv) { pack_yuv(s, p, yuv_line, i); ret = encode_strip(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; } 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); 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_PHOTOMETRIC, 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 == 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 (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); } // 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: av_free(strip_sizes); av_free(strip_offsets); av_free(yuv_line); return ret; }