diff options
Diffstat (limited to 'libavutil/samplefmt.c')
| -rw-r--r-- | libavutil/samplefmt.c | 61 |
1 files changed, 53 insertions, 8 deletions
diff --git a/libavutil/samplefmt.c b/libavutil/samplefmt.c index bff600447c..a1986980f0 100644 --- a/libavutil/samplefmt.c +++ b/libavutil/samplefmt.c @@ -1,18 +1,18 @@ /* - * 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 */ @@ -24,7 +24,7 @@ #include <string.h> typedef struct SampleFmtInfo { - const char *name; + char name[8]; int bits; int planar; enum AVSampleFormat altform; ///< planar<->packed alternative form @@ -61,6 +61,15 @@ enum AVSampleFormat av_get_sample_fmt(const char *name) return AV_SAMPLE_FMT_NONE; } +enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar) +{ + if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB) + return AV_SAMPLE_FMT_NONE; + if (sample_fmt_info[sample_fmt].planar == planar) + return sample_fmt; + return sample_fmt_info[sample_fmt].altform; +} + enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt) { if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB) @@ -98,6 +107,14 @@ int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt) 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 + int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt) { if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB) @@ -149,14 +166,18 @@ int av_samples_fill_arrays(uint8_t **audio_data, int *linesize, if (buf_size < 0) return buf_size; - audio_data[0] = buf; + audio_data[0] = (uint8_t *)buf; for (ch = 1; planar && ch < nb_channels; ch++) audio_data[ch] = audio_data[ch-1] + line_size; if (linesize) *linesize = line_size; +#if FF_API_SAMPLES_UTILS_RETURN_ZERO return 0; +#else + return buf_size; +#endif } int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels, @@ -181,7 +202,26 @@ int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels, av_samples_set_silence(audio_data, 0, nb_samples, nb_channels, sample_fmt); +#if FF_API_SAMPLES_UTILS_RETURN_ZERO return 0; +#else + return size; +#endif +} + +int av_samples_alloc_array_and_samples(uint8_t ***audio_data, int *linesize, int nb_channels, + int nb_samples, enum AVSampleFormat sample_fmt, int align) +{ + int ret, nb_planes = av_sample_fmt_is_planar(sample_fmt) ? nb_channels : 1; + + *audio_data = av_calloc(nb_planes, sizeof(**audio_data)); + if (!*audio_data) + return AVERROR(ENOMEM); + ret = av_samples_alloc(*audio_data, linesize, nb_channels, + nb_samples, sample_fmt, align); + if (ret < 0) + av_freep(audio_data); + return ret; } int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset, @@ -197,8 +237,13 @@ int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset, dst_offset *= block_align; src_offset *= block_align; - for (i = 0; i < planes; i++) - memcpy(dst[i] + dst_offset, src[i] + src_offset, data_size); + if((dst[0] < src[0] ? src[0] - dst[0] : dst[0] - src[0]) >= data_size) { + for (i = 0; i < planes; i++) + memcpy(dst[i] + dst_offset, src[i] + src_offset, data_size); + } else { + for (i = 0; i < planes; i++) + memmove(dst[i] + dst_offset, src[i] + src_offset, data_size); + } return 0; } |