diff options
Diffstat (limited to 'libavcodec/avdct.c')
| -rw-r--r-- | libavcodec/avdct.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libavcodec/avdct.c b/libavcodec/avdct.c new file mode 100644 index 0000000000..f92c691adb --- /dev/null +++ b/libavcodec/avdct.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at> + * + * 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 + */ + +#include "avcodec.h" +#include "idctdsp.h" +#include "fdctdsp.h" +#include "pixblockdsp.h" +#include "avdct.h" + +#define OFFSET(x) offsetof(AVDCT,x) +#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C +//these names are too long to be readable +#define V AV_OPT_FLAG_VIDEO_PARAM +#define A AV_OPT_FLAG_AUDIO_PARAM +#define E AV_OPT_FLAG_ENCODING_PARAM +#define D AV_OPT_FLAG_DECODING_PARAM + +static const AVOption avdct_options[] = { +{"dct", "DCT algorithm", OFFSET(dct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E, "dct"}, +{"auto", "autoselect a good one (default)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, "dct"}, +{"fastint", "fast integer (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, "dct"}, +{"int", "accurate integer", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, "dct"}, +{"mmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, "dct"}, +{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, "dct"}, +{"faan", "floating point AAN DCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, "dct"}, + +{"idct", "select IDCT implementation", OFFSET(idct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E|D, "idct"}, +{"auto", "autoselect a good one (default)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"int", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"simple", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"simplemmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"arm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, "idct"}, +#if FF_API_ARCH_SH4 +{"sh4", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SH4 }, INT_MIN, INT_MAX, V|E|D, "idct"}, +#endif +{"simplearm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"simplearmv5te", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"simplearmv6", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"simpleneon", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"}, +#if FF_API_ARCH_ALPHA +{"simplealpha", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEALPHA }, INT_MIN, INT_MAX, V|E|D, "idct"}, +#endif +{"ipp", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_IPP }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"xvid", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"xvidmmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, +{"faani", "floating point AAN IDCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_FAAN }, INT_MIN, INT_MAX, V|D|E, "idct"}, +{"simpleauto", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEAUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, + +{"bits_per_sample", "", OFFSET(bits_per_sample), AV_OPT_TYPE_INT, {.i64 = 8 }, 0, 14, 0,}, +{NULL}, +}; + +static const AVClass avdct_class = { + .class_name = "AVDCT", + .option = avdct_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +const AVClass *avcodec_dct_get_class(void) +{ + return &avdct_class; +} + +AVDCT *avcodec_dct_alloc(void) +{ + AVDCT *dsp = av_mallocz(sizeof(AVDCT)); + + if (!dsp) + return NULL; + + dsp->av_class = &avdct_class; + av_opt_set_defaults(dsp); + + return dsp; +} + +int avcodec_dct_init(AVDCT *dsp) +{ + AVCodecContext *avctx = avcodec_alloc_context3(NULL); + + if (!avctx) + return AVERROR(ENOMEM); + + avctx->idct_algo = dsp->idct_algo; + avctx->dct_algo = dsp->dct_algo; + avctx->bits_per_raw_sample = dsp->bits_per_sample; + +#define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name)) + +#if CONFIG_IDCTDSP + { + IDCTDSPContext idsp; + ff_idctdsp_init(&idsp, avctx); + COPY(idsp, idct); + COPY(idsp, idct_permutation); + } +#endif + +#if CONFIG_FDCTDSP + { + FDCTDSPContext fdsp; + ff_fdctdsp_init(&fdsp, avctx); + COPY(fdsp, fdct); + } +#endif + +#if CONFIG_PIXBLOCKDSP + { + PixblockDSPContext pdsp; + ff_pixblockdsp_init(&pdsp, avctx); + COPY(pdsp, get_pixels); + } +#endif + + avcodec_close(avctx); + av_free(avctx); + + return 0; +} |