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author | Reinhard Tartler <siretart@tauware.de> | 2011-02-07 14:37:08 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-02-16 23:00:30 +0100 |
commit | 7ffe76e540297ad4df2896064f83cb1adbd81fd9 (patch) | |
tree | 4510accdfd282fafb4f8caae1055c76ebf45e4c0 /libavutil/samplefmt.h | |
parent | fad8143f5b9689e0e2dafe46500d944cfa58a911 (diff) | |
download | ffmpeg-streaming-7ffe76e540297ad4df2896064f83cb1adbd81fd9.zip ffmpeg-streaming-7ffe76e540297ad4df2896064f83cb1adbd81fd9.tar.gz |
Merge libavcore into libavutil
Done to keep ABI compatible. Otherwise this is just silly
Diffstat (limited to 'libavutil/samplefmt.h')
-rw-r--r-- | libavutil/samplefmt.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/libavutil/samplefmt.h b/libavutil/samplefmt.h new file mode 100644 index 0000000..9b9c0d4 --- /dev/null +++ b/libavutil/samplefmt.h @@ -0,0 +1,111 @@ +/* + * 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 + */ + +#ifndef AVUTIL_SAMPLEFMT_H +#define AVUTIL_SAMPLEFMT_H + +#include "avutil.h" + +/** + * all in native-endian format + */ +enum AVSampleFormat { + AV_SAMPLE_FMT_NONE = -1, + AV_SAMPLE_FMT_U8, ///< unsigned 8 bits + AV_SAMPLE_FMT_S16, ///< signed 16 bits + AV_SAMPLE_FMT_S32, ///< signed 32 bits + AV_SAMPLE_FMT_FLT, ///< float + AV_SAMPLE_FMT_DBL, ///< double + AV_SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if linking dynamically +}; + +/** + * Return the name of sample_fmt, or NULL if sample_fmt is not + * recognized. + */ +const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt); + +/** + * Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE + * on error. + */ +enum AVSampleFormat av_get_sample_fmt(const char *name); + +/** + * Generate a string corresponding to the sample format with + * sample_fmt, or a header if sample_fmt is negative. + * + * @param buf the buffer where to write the string + * @param buf_size the size of buf + * @param sample_fmt the number of the sample format to print the + * corresponding info string, or a negative value to print the + * corresponding header. + * @return the pointer to the filled buffer or NULL if sample_fmt is + * unknown or in case of other errors + */ +char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt); + +/** + * Return sample format bits per sample. + * + * @param sample_fmt the sample format + * @return number of bits per sample or zero if unknown for the given + * sample format + */ +int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt); + +/** + * Fill channel data pointers and linesizes for samples with sample + * format sample_fmt. + * + * The pointers array is filled with the pointers to the samples data: + * data[c] points to the first sample of channel c. + * data[c] + linesize[0] points to the second sample of channel c + * + * @param pointers array to be filled with the pointer for each plane, may be NULL + * @param linesizes array to be filled with the linesize, may be NULL + * @param buf the pointer to a buffer containing the samples + * @param nb_samples the number of samples in a single channel + * @param planar 1 if the samples layout is planar, 0 if it is packed + * @param nb_channels the number of channels + * @return the total size of the buffer, a negative + * error code in case of failure + */ +int av_samples_fill_arrays(uint8_t *pointers[8], int linesizes[8], + uint8_t *buf, int nb_channels, int nb_samples, + enum AVSampleFormat sample_fmt, int planar, int align); + +/** + * Allocate a samples buffer for nb_samples samples, and + * fill pointers and linesizes accordingly. + * The allocated samples buffer has to be freed by using + * av_freep(&pointers[0]). + * + * @param nb_samples number of samples per channel + * @param planar 1 if the samples layout is planar, 0 if packed, + * @param align the value to use for buffer size alignment + * @return the size in bytes required for the samples buffer, a negative + * error code in case of failure + * @see av_samples_fill_arrays() + */ +int av_samples_alloc(uint8_t *pointers[8], int linesizes[8], + int nb_samples, int nb_channels, + enum AVSampleFormat sample_fmt, int planar, + int align); + +#endif /* AVCORE_SAMPLEFMT_H */ |