42 static void encode_rs(struct image_proc_ctx *ctx)  in encode_rs()  argument
44     struct image *fcx = ctx->ctx;  in encode_rs()
49     for (i = ctx->start; i < ctx->end; i += fcx->rs_n) {  in encode_rs()
54         encode_rs_char(ctx->rs, data, &fcx->fec[ctx->fec_pos]);  in encode_rs()
55         ctx->fec_pos += fcx->roots;  in encode_rs()
59 static void decode_rs(struct image_proc_ctx *ctx)  in decode_rs()  argument
61     struct image *fcx = ctx->ctx;  in decode_rs()
68     for (i = ctx->start; i < ctx->end; i += fcx->rs_n) {  in decode_rs()
73         memcpy(&data[fcx->rs_n], &fcx->fec[ctx->fec_pos], fcx->roots);  in decode_rs()
74         rv = decode_rs_char(ctx->rs, data, NULL, 0);  in decode_rs()
85             ctx->rv += rv;  in decode_rs()
88         ctx->fec_pos += fcx->roots;  in decode_rs()
136 static int print_size(image& ctx)  in print_size()  argument
139     printf("%" PRIu64 "\n", fec_ecc_get_size(ctx.inp_size, ctx.roots));  in print_size()
172 static int encode(image& ctx, const std::vector<std::string>& inp_filenames,  in encode()  argument
175     if (ctx.inplace) {  in encode()
179     if (!image_load(inp_filenames, &ctx)) {  in encode()
183     if (!image_ecc_new(fec_filename, &ctx)) {  in encode()
187     INFO("encoding RS(255, %d) to '%s' for input files:\n", ctx.rs_n,  in encode()
196     if (ctx.verbose) {  in encode()
197         INFO("\traw fec size: %u\n", ctx.fec_size);  in encode()
198         INFO("\tblocks: %" PRIu64 "\n", ctx.blocks);  in encode()
199         INFO("\trounds: %" PRIu64 "\n", ctx.rounds);  in encode()
202     if (!image_process(encode_rs, &ctx)) {  in encode()
206     if (!image_ecc_save(&ctx)) {  in encode()
210     image_free(&ctx);  in encode()
214 static int decode(image& ctx, const std::vector<std::string>& inp_filenames,  in decode()  argument
219     if (ctx.inplace && ctx.sparse) {  in decode()
224     if (ctx.padding) {  in decode()
228     if (!image_ecc_load(fec_filename, &ctx) ||  in decode()
229             !image_load(inp_filenames, &ctx)) {  in decode()
233     if (ctx.inplace) {  in decode()
235             inp_filename.c_str(), ctx.rs_n, fec_filename.c_str());  in decode()
241             out_filename.empty() ? out_filename.c_str() : "<none>", ctx.rs_n,  in decode()
245     if (ctx.verbose) {  in decode()
246         INFO("\traw fec size: %u\n", ctx.fec_size);  in decode()
247         INFO("\tblocks: %" PRIu64 "\n", ctx.blocks);  in decode()
248         INFO("\trounds: %" PRIu64 "\n", ctx.rounds);  in decode()
251     if (!image_process(decode_rs, &ctx)) {  in decode()
255     if (ctx.rv) {  in decode()
256         INFO("corrected %" PRIu64 " errors\n", ctx.rv);  in decode()
261     if (!out_filename.empty() && !image_save(out_filename, &ctx)) {  in decode()
265     image_free(&ctx);  in decode()
275     image ctx;  in main()  local
277     image_init(&ctx);  in main()
278     ctx.roots = FEC_DEFAULT_ROOTS;  in main()
305             ctx.sparse = true;  in main()
319             ctx.roots = (int)parse_arg(optarg, "roots", FEC_RSM);  in main()
322             ctx.inplace = true;  in main()
325             ctx.threads = (int)parse_arg(optarg, "threads", IMAGE_MAX_THREADS);  in main()
332             ctx.inp_size = parse_arg(optarg, "print-fec-size", UINT64_MAX);  in main()
349             ctx.padding = (uint32_t)parse_arg(optarg, "padding", UINT32_MAX);  in main()
350             if (ctx.padding % FEC_BLOCKSIZE) {  in main()
355             ctx.verbose = true;  in main()
367     assert(ctx.roots > 0 && ctx.roots < FEC_RSM);  in main()
386             if (ctx.inplace) {  in main()
398         return print_size(ctx);  in main()
403         return encode(ctx, inp_filenames, fec_filename);  in main()
405         return decode(ctx, inp_filenames, fec_filename, out_filename);  in main()