[deb_ffmpeg.git] / ffmpeg / libswscale / ppc / yuv2yuv_altivec.c

/*
 * AltiVec-enhanced yuv-to-yuv conversion routines.
 *
 * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org>
 * based on the equivalent C code in swscale.c
 *
 * 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 <inttypes.h>

#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"

#if HAVE_ALTIVEC

static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *src[],
                                       int srcStride[], int srcSliceY,
                                       int srcSliceH, uint8_t *dstParam[],
                                       int dstStride_a[])
{
    uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
    //            srcStride[0], srcStride[1], dstStride[0]);
    const uint8_t *ysrc   = src[0];
    const uint8_t *usrc   = src[1];
    const uint8_t *vsrc   = src[2];
    const int width       = c->srcW;
    const int height      = srcSliceH;
    const int lumStride   = srcStride[0];
    const int chromStride = srcStride[1];
    const int dstStride   = dstStride_a[0];
    const vector unsigned char yperm = vec_lvsl(0, ysrc);
    const int vertLumPerChroma       = 2;
    register unsigned int y;

    /* This code assumes:
     *
     * 1) dst is 16 bytes-aligned
     * 2) dstStride is a multiple of 16
     * 3) width is a multiple of 16
     * 4) lum & chrom stride are multiples of 8
     */

    for (y = 0; y < height; y++) {
        int i;
        for (i = 0; i < width - 31; i += 32) {
            const unsigned int j          = i >> 1;
            vector unsigned char v_yA     = vec_ld(i, ysrc);
            vector unsigned char v_yB     = vec_ld(i + 16, ysrc);
            vector unsigned char v_yC     = vec_ld(i + 32, ysrc);
            vector unsigned char v_y1     = vec_perm(v_yA, v_yB, yperm);
            vector unsigned char v_y2     = vec_perm(v_yB, v_yC, yperm);
            vector unsigned char v_uA     = vec_ld(j, usrc);
            vector unsigned char v_uB     = vec_ld(j + 16, usrc);
            vector unsigned char v_u      = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
            vector unsigned char v_vA     = vec_ld(j, vsrc);
            vector unsigned char v_vB     = vec_ld(j + 16, vsrc);
            vector unsigned char v_v      = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
            vector unsigned char v_uv_b   = vec_mergel(v_u, v_v);
            vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
            vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
            vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
            vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
            vec_st(v_yuy2_0, (i << 1), dst);
            vec_st(v_yuy2_1, (i << 1) + 16, dst);
            vec_st(v_yuy2_2, (i << 1) + 32, dst);
            vec_st(v_yuy2_3, (i << 1) + 48, dst);
        }
        if (i < width) {
            const unsigned int j          = i >> 1;
            vector unsigned char v_y1     = vec_ld(i, ysrc);
            vector unsigned char v_u      = vec_ld(j, usrc);
            vector unsigned char v_v      = vec_ld(j, vsrc);
            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
            vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
            vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
            vec_st(v_yuy2_0, (i << 1), dst);
            vec_st(v_yuy2_1, (i << 1) + 16, dst);
        }
        if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
            usrc += chromStride;
            vsrc += chromStride;
        }
        ysrc += lumStride;
        dst  += dstStride;
    }

    return srcSliceH;
}

static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *src[],
                                       int srcStride[], int srcSliceY,
                                       int srcSliceH, uint8_t *dstParam[],
                                       int dstStride_a[])
{
    uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
    //            srcStride[0], srcStride[1], dstStride[0]);
    const uint8_t *ysrc              = src[0];
    const uint8_t *usrc              = src[1];
    const uint8_t *vsrc              = src[2];
    const int width                  = c->srcW;
    const int height                 = srcSliceH;
    const int lumStride              = srcStride[0];
    const int chromStride            = srcStride[1];
    const int dstStride              = dstStride_a[0];
    const int vertLumPerChroma       = 2;
    const vector unsigned char yperm = vec_lvsl(0, ysrc);
    register unsigned int y;

    /* This code assumes:
     *
     * 1) dst is 16 bytes-aligned
     * 2) dstStride is a multiple of 16
     * 3) width is a multiple of 16
     * 4) lum & chrom stride are multiples of 8
     */

    for (y = 0; y < height; y++) {
        int i;
        for (i = 0; i < width - 31; i += 32) {
            const unsigned int j          = i >> 1;
            vector unsigned char v_yA     = vec_ld(i, ysrc);
            vector unsigned char v_yB     = vec_ld(i + 16, ysrc);
            vector unsigned char v_yC     = vec_ld(i + 32, ysrc);
            vector unsigned char v_y1     = vec_perm(v_yA, v_yB, yperm);
            vector unsigned char v_y2     = vec_perm(v_yB, v_yC, yperm);
            vector unsigned char v_uA     = vec_ld(j, usrc);
            vector unsigned char v_uB     = vec_ld(j + 16, usrc);
            vector unsigned char v_u      = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
            vector unsigned char v_vA     = vec_ld(j, vsrc);
            vector unsigned char v_vB     = vec_ld(j + 16, vsrc);
            vector unsigned char v_v      = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
            vector unsigned char v_uv_b   = vec_mergel(v_u, v_v);
            vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
            vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
            vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
            vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
            vec_st(v_uyvy_0, (i << 1), dst);
            vec_st(v_uyvy_1, (i << 1) + 16, dst);
            vec_st(v_uyvy_2, (i << 1) + 32, dst);
            vec_st(v_uyvy_3, (i << 1) + 48, dst);
        }
        if (i < width) {
            const unsigned int j          = i >> 1;
            vector unsigned char v_y1     = vec_ld(i, ysrc);
            vector unsigned char v_u      = vec_ld(j, usrc);
            vector unsigned char v_v      = vec_ld(j, vsrc);
            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
            vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
            vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
            vec_st(v_uyvy_0, (i << 1), dst);
            vec_st(v_uyvy_1, (i << 1) + 16, dst);
        }
        if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
            usrc += chromStride;
            vsrc += chromStride;
        }
        ysrc += lumStride;
        dst  += dstStride;
    }
    return srcSliceH;
}

#endif /* HAVE_ALTIVEC */

av_cold void ff_get_unscaled_swscale_ppc(SwsContext *c)
{
#if HAVE_ALTIVEC
    if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
        return;

    if (!(c->srcW & 15) && !(c->flags & SWS_BITEXACT) &&
        c->srcFormat == AV_PIX_FMT_YUV420P) {
        enum AVPixelFormat dstFormat = c->dstFormat;

        // unscaled YV12 -> packed YUV, we want speed
        if (dstFormat == AV_PIX_FMT_YUYV422)
            c->swscale = yv12toyuy2_unscaled_altivec;
        else if (dstFormat == AV_PIX_FMT_UYVY422)
            c->swscale = yv12touyvy_unscaled_altivec;
    }
#endif /* HAVE_ALTIVEC */
}
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* AltiVec-enhanced yuv-to-yuv conversion routines.
	3	*
	4	* Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org>
	5	* based on the equivalent C code in swscale.c
	6	*
	7	* This file is part of FFmpeg.
	8	*
	9	* FFmpeg is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public
	11	* License as published by the Free Software Foundation; either
	12	* version 2.1 of the License, or (at your option) any later version.
	13	*
	14	* FFmpeg is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public
	20	* License along with FFmpeg; if not, write to the Free Software
	21	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	22	*/
	23
	24	#include <inttypes.h>
	25
	26	#include "config.h"
	27	#include "libavutil/attributes.h"
	28	#include "libavutil/cpu.h"
	29	#include "libswscale/swscale.h"
	30	#include "libswscale/swscale_internal.h"
	31
	32	#if HAVE_ALTIVEC
	33
	34	static int yv12toyuy2_unscaled_altivec(SwsContext c, const uint8_t src[],
	35	int srcStride[], int srcSliceY,
	36	int srcSliceH, uint8_t *dstParam[],
	37	int dstStride_a[])
	38	{
	39	uint8_t dst = dstParam[0] + dstStride_a[0] srcSliceY;
	40	// yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
	41	// srcStride[0], srcStride[1], dstStride[0]);
	42	const uint8_t *ysrc = src[0];
	43	const uint8_t *usrc = src[1];
	44	const uint8_t *vsrc = src[2];
	45	const int width = c->srcW;
	46	const int height = srcSliceH;
	47	const int lumStride = srcStride[0];
	48	const int chromStride = srcStride[1];
	49	const int dstStride = dstStride_a[0];
	50	const vector unsigned char yperm = vec_lvsl(0, ysrc);
	51	const int vertLumPerChroma = 2;
	52	register unsigned int y;
	53
	54	/* This code assumes:
	55	*
	56	* 1) dst is 16 bytes-aligned
	57	* 2) dstStride is a multiple of 16
	58	* 3) width is a multiple of 16
	59	* 4) lum & chrom stride are multiples of 8
	60	*/
	61
	62	for (y = 0; y < height; y++) {
	63	int i;
	64	for (i = 0; i < width - 31; i += 32) {
65	const unsigned int j = i >> 1;
66	vector unsigned char v_yA = vec_ld(i, ysrc);
67	vector unsigned char v_yB = vec_ld(i + 16, ysrc);
68	vector unsigned char v_yC = vec_ld(i + 32, ysrc);
69	vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
70	vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
71	vector unsigned char v_uA = vec_ld(j, usrc);
72	vector unsigned char v_uB = vec_ld(j + 16, usrc);
73	vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
74	vector unsigned char v_vA = vec_ld(j, vsrc);
75	vector unsigned char v_vB = vec_ld(j + 16, vsrc);
76	vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
77	vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
78	vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
79	vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
80	vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
81	vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
82	vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
83	vec_st(v_yuy2_0, (i << 1), dst);
84	vec_st(v_yuy2_1, (i << 1) + 16, dst);
85	vec_st(v_yuy2_2, (i << 1) + 32, dst);
86	vec_st(v_yuy2_3, (i << 1) + 48, dst);
87	}
88	if (i < width) {
89	const unsigned int j = i >> 1;
90	vector unsigned char v_y1 = vec_ld(i, ysrc);
91	vector unsigned char v_u = vec_ld(j, usrc);
92	vector unsigned char v_v = vec_ld(j, vsrc);
93	vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
94	vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
95	vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
96	vec_st(v_yuy2_0, (i << 1), dst);
97	vec_st(v_yuy2_1, (i << 1) + 16, dst);
98	}
99	if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
100	usrc += chromStride;
101	vsrc += chromStride;
102	}
103	ysrc += lumStride;
104	dst += dstStride;
105	}
106
107	return srcSliceH;
108	}
109
110	static int yv12touyvy_unscaled_altivec(SwsContext c, const uint8_t src[],
111	int srcStride[], int srcSliceY,
112	int srcSliceH, uint8_t *dstParam[],
113	int dstStride_a[])
114	{
115	uint8_t dst = dstParam[0] + dstStride_a[0] srcSliceY;
116	// yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
117	// srcStride[0], srcStride[1], dstStride[0]);
118	const uint8_t *ysrc = src[0];
119	const uint8_t *usrc = src[1];
120	const uint8_t *vsrc = src[2];
121	const int width = c->srcW;
122	const int height = srcSliceH;
123	const int lumStride = srcStride[0];
124	const int chromStride = srcStride[1];
125	const int dstStride = dstStride_a[0];
126	const int vertLumPerChroma = 2;
127	const vector unsigned char yperm = vec_lvsl(0, ysrc);
128	register unsigned int y;
129
130	/* This code assumes:
131	*
132	* 1) dst is 16 bytes-aligned
133	* 2) dstStride is a multiple of 16
134	* 3) width is a multiple of 16
135	* 4) lum & chrom stride are multiples of 8
136	*/
137
138	for (y = 0; y < height; y++) {
139	int i;
140	for (i = 0; i < width - 31; i += 32) {
141	const unsigned int j = i >> 1;
142	vector unsigned char v_yA = vec_ld(i, ysrc);
143	vector unsigned char v_yB = vec_ld(i + 16, ysrc);
144	vector unsigned char v_yC = vec_ld(i + 32, ysrc);
145	vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
146	vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
147	vector unsigned char v_uA = vec_ld(j, usrc);
148	vector unsigned char v_uB = vec_ld(j + 16, usrc);
149	vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
150	vector unsigned char v_vA = vec_ld(j, vsrc);
151	vector unsigned char v_vB = vec_ld(j + 16, vsrc);
152	vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
153	vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
154	vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
155	vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
156	vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
157	vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
158	vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
159	vec_st(v_uyvy_0, (i << 1), dst);
160	vec_st(v_uyvy_1, (i << 1) + 16, dst);
161	vec_st(v_uyvy_2, (i << 1) + 32, dst);
162	vec_st(v_uyvy_3, (i << 1) + 48, dst);
163	}
164	if (i < width) {
165	const unsigned int j = i >> 1;
166	vector unsigned char v_y1 = vec_ld(i, ysrc);
167	vector unsigned char v_u = vec_ld(j, usrc);
168	vector unsigned char v_v = vec_ld(j, vsrc);
169	vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
170	vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
171	vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
172	vec_st(v_uyvy_0, (i << 1), dst);
173	vec_st(v_uyvy_1, (i << 1) + 16, dst);
174	}
175	if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
176	usrc += chromStride;
177	vsrc += chromStride;
178	}
179	ysrc += lumStride;
180	dst += dstStride;
181	}
182	return srcSliceH;
183	}
184
185	#endif /* HAVE_ALTIVEC */
186
187	av_cold void ff_get_unscaled_swscale_ppc(SwsContext *c)
188	{
189	#if HAVE_ALTIVEC
190	if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
191	return;
192
193	if (!(c->srcW & 15) && !(c->flags & SWS_BITEXACT) &&
194	c->srcFormat == AV_PIX_FMT_YUV420P) {
195	enum AVPixelFormat dstFormat = c->dstFormat;
196
197	// unscaled YV12 -> packed YUV, we want speed
198	if (dstFormat == AV_PIX_FMT_YUYV422)
199	c->swscale = yv12toyuy2_unscaled_altivec;
200	else if (dstFormat == AV_PIX_FMT_UYVY422)
201	c->swscale = yv12touyvy_unscaled_altivec;
202	}
203	#endif /* HAVE_ALTIVEC */
204	}