/* * This file is part of Libav. * * Libav 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, * 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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "samplefmt.h" #include <stdio.h> #include <stdlib.h> #include <string.h> typedef struct SampleFmtInfo { const char *name; int bits; } SampleFmtInfo; /** this table gives more information about formats */ static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = { [AV_SAMPLE_FMT_U8] = { .name = "u8", .bits = 8 }, [AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16 }, [AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32 }, [AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32 }, [AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64 }, }; const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt) { if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB) return NULL; return sample_fmt_info[sample_fmt].name; } enum AVSampleFormat av_get_sample_fmt(const char *name) { int i; for (i = 0; i < AV_SAMPLE_FMT_NB; i++) if (!strcmp(sample_fmt_info[i].name, name)) return i; return AV_SAMPLE_FMT_NONE; } char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt) { /* print header */ if (sample_fmt < 0) snprintf(buf, buf_size, "name " " depth"); else if (sample_fmt < AV_SAMPLE_FMT_NB) { SampleFmtInfo info = sample_fmt_info[sample_fmt]; snprintf (buf, buf_size, "%-6s" " %2d ", info.name, info.bits); } return buf; } int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt) { return sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB ? 0 : sample_fmt_info[sample_fmt].bits >> 3; } #if FF_API_GET_BITS_PER_SAMPLE_FMT int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt) { return sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB ? 0 : sample_fmt_info[sample_fmt].bits; } #endif