diff options
Diffstat (limited to 'libavutil/lzo.c')
| -rw-r--r-- | libavutil/lzo.c | 60 |
1 files changed, 52 insertions, 8 deletions
diff --git a/libavutil/lzo.c b/libavutil/lzo.c index eff3cd2333..c723257212 100644 --- a/libavutil/lzo.c +++ b/libavutil/lzo.c @@ -2,20 +2,20 @@ * LZO 1x decompression * Copyright (c) 2006 Reimar Doeffinger * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -102,7 +102,7 @@ static inline void copy(LZOContext *c, int cnt) /** * @brief Copies previously decoded bytes to current position. - * @param back how many bytes back we start + * @param back how many bytes back we start, must be > 0 * @param cnt number of bytes to copy, must be >= 0 * * cnt > back is valid, this will copy the bytes we just copied, @@ -129,11 +129,11 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) int state = 0; int x; LZOContext c; - if (!*outlen || !*inlen) { + if (*outlen <= 0 || *inlen <= 0) { int res = 0; - if (!*outlen) + if (*outlen <= 0) res |= AV_LZO_OUTPUT_FULL; - if (!*inlen) + if (*inlen <= 0) res |= AV_LZO_INPUT_DEPLETED; return res; } @@ -196,3 +196,47 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) *outlen = c.out_end - c.out; return c.error; } + +#ifdef TEST +#include <stdio.h> +#include <lzo/lzo1x.h> +#include "log.h" +#define MAXSZ (10*1024*1024) + +/* Define one of these to 1 if you wish to benchmark liblzo + * instead of our native implementation. */ +#define BENCHMARK_LIBLZO_SAFE 0 +#define BENCHMARK_LIBLZO_UNSAFE 0 + +int main(int argc, char *argv[]) { + FILE *in = fopen(argv[1], "rb"); + uint8_t *orig = av_malloc(MAXSZ + 16); + uint8_t *comp = av_malloc(2*MAXSZ + 16); + uint8_t *decomp = av_malloc(MAXSZ + 16); + size_t s = fread(orig, 1, MAXSZ, in); + lzo_uint clen = 0; + long tmp[LZO1X_MEM_COMPRESS]; + int inlen, outlen; + int i; + av_log_set_level(AV_LOG_DEBUG); + lzo1x_999_compress(orig, s, comp, &clen, tmp); + for (i = 0; i < 300; i++) { +START_TIMER + inlen = clen; outlen = MAXSZ; +#if BENCHMARK_LIBLZO_SAFE + if (lzo1x_decompress_safe(comp, inlen, decomp, &outlen, NULL)) +#elif BENCHMARK_LIBLZO_UNSAFE + if (lzo1x_decompress(comp, inlen, decomp, &outlen, NULL)) +#else + if (av_lzo1x_decode(decomp, &outlen, comp, &inlen)) +#endif + av_log(NULL, AV_LOG_ERROR, "decompression error\n"); +STOP_TIMER("lzod") + } + if (memcmp(orig, decomp, s)) + av_log(NULL, AV_LOG_ERROR, "decompression incorrect\n"); + else + av_log(NULL, AV_LOG_ERROR, "decompression OK\n"); + return 0; +} +#endif |