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/* |
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* Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "idctdsp.h" |
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#include "fdctdsp.h" |
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#include "pixblockdsp.h" |
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#include "avdct.h" |
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#define OFFSET(x) offsetof(AVDCT,x) |
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#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 |
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//these names are too long to be readable |
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#define V AV_OPT_FLAG_VIDEO_PARAM |
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#define A AV_OPT_FLAG_AUDIO_PARAM |
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#define E AV_OPT_FLAG_ENCODING_PARAM |
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#define D AV_OPT_FLAG_DECODING_PARAM |
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static const AVOption avdct_options[] = { |
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{"dct", "DCT algorithm", OFFSET(dct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E, "dct"}, |
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{"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"fastint", "fast integer (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"int", "accurate integer", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"mmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"faan", "floating point AAN DCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, "dct"}, |
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{"idct", "select IDCT implementation", OFFSET(idct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E|D, "idct"}, |
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{"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"int", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simple", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simplemmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"arm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simplearm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simplearmv5te", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simplearmv6", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"simpleneon", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"xvid", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"xvidmmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"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"}, |
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{"simpleauto", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEAUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
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{"bits_per_sample", "", OFFSET(bits_per_sample), AV_OPT_TYPE_INT, {.i64 = 8 }, 0, 14, 0,}, |
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{NULL}, |
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}; |
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static const AVClass avdct_class = { |
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.class_name = "AVDCT", |
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.option = avdct_options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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const AVClass *avcodec_dct_get_class(void) |
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{ |
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return &avdct_class; |
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} |
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AVDCT *avcodec_dct_alloc(void) |
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{ |
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AVDCT *dsp = av_mallocz(sizeof(AVDCT)); |
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if (!dsp) |
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return NULL; |
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dsp->av_class = &avdct_class; |
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av_opt_set_defaults(dsp); |
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return dsp; |
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} |
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int avcodec_dct_init(AVDCT *dsp) |
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{ |
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AVCodecContext *avctx = avcodec_alloc_context3(NULL); |
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if (!avctx) |
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return AVERROR(ENOMEM); |
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avctx->idct_algo = dsp->idct_algo; |
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avctx->dct_algo = dsp->dct_algo; |
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avctx->bits_per_raw_sample = dsp->bits_per_sample; |
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#define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name)) |
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#if CONFIG_IDCTDSP |
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{ |
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IDCTDSPContext idsp = {0}; |
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ff_idctdsp_init(&idsp, avctx); |
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COPY(idsp, idct); |
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COPY(idsp, idct_permutation); |
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} |
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#endif |
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#if CONFIG_FDCTDSP |
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{ |
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FDCTDSPContext fdsp; |
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ff_fdctdsp_init(&fdsp, avctx); |
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COPY(fdsp, fdct); |
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} |
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#endif |
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#if CONFIG_PIXBLOCKDSP |
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{ |
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PixblockDSPContext pdsp; |
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ff_pixblockdsp_init(&pdsp, avctx); |
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COPY(pdsp, get_pixels); |
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} |
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#endif |
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avcodec_free_context(&avctx); |
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return 0; |
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} |