[deb_ffmpeg.git] / ffmpeg / libavcodec / arm / flacdsp_arm.S

/*
 * Copyright (c) 2012 Mans Rullgard <mans@mansr.com>
 *
 * 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 "libavutil/arm/asm.S"

function flac_lpc_16_1_arm
        ldr             r12, [sp]
        push            {r4, lr}
        ldr             r1,  [r1]
        subs            r12, r12, #2
        ldr             lr,  [r0], #4
        beq             2f
        it              lt
        poplt           {r4, pc}
1:
        mul             r4,  lr,  r1
        ldm             r0,  {r2, lr}
        add_sh          r2,  r2,  r4,  asr r3
        mul             r4,  r2,  r1
        subs            r12, r12, #2
        add_sh          lr,  lr,  r4,  asr r3
        stm             r0!, {r2, lr}
        bgt             1b
        it              lt
        poplt           {r4, pc}
2:
        mul             r4,  lr,  r1
        ldr             r2,  [r0]
        add_sh          r2,  r2,  r4,  asr r3
        str             r2,  [r0]
        pop             {r4, pc}
endfunc

function flac_lpc_16_2_arm
        ldr             r12, [sp]
        subs            r12, r12, r2
        it              le
        bxle            lr

        push            {r4-r9, lr}
        ldm             r0!, {r6, r7}
        ldm             r1,  {r8, r9}
        subs            r12, r12, #1
        beq             2f
1:
        mul             r4,  r6,  r8
        mul             r5,  r7,  r8
        mla             r4,  r7,  r9,  r4
        ldm             r0,  {r6, r7}
        add_sh          r6,  r6,  r4,  asr r3
        mla             r5,  r6,  r9,  r5
        add_sh          r7,  r7,  r5,  asr r3
        stm             r0!, {r6, r7}
        subs            r12, r12, #2
        bgt             1b
        it              lt
        poplt           {r4-r9, pc}
2:
        mul             r4,  r6,  r8
        mla             r4,  r7,  r9,  r4
        ldr             r5,  [r0]
        add_sh          r5,  r5,  r4,  asr r3
        str             r5,  [r0]
        pop             {r4-r9, pc}
endfunc

function ff_flac_lpc_16_arm, export=1
        cmp             r2,  #2
        blt             flac_lpc_16_1_arm
        beq             flac_lpc_16_2_arm

        ldr             r12, [sp]
        subs            r12, r12, r2
        it              le
        bxle            lr

        push            {r4-r9, lr}

        subs            r12, r12, #1
        beq             3f
1:
        sub             lr,  r2,  #2
        mov             r4,  #0
        mov             r5,  #0

        ldr             r7,  [r0], #4
        ldr             r9,  [r1], #4
2:
        mla             r4,  r7,  r9,  r4
        ldm             r0!, {r6, r7}
        mla             r5,  r6,  r9,  r5
        ldm             r1!, {r8, r9}
        mla             r4,  r6,  r8,  r4
        subs            lr,  lr,  #2
        mla             r5,  r7,  r8,  r5
        bgt             2b
        blt             6f

        mla             r4,  r7,  r9,  r4
        ldr             r7,  [r0], #4
        mla             r5,  r7,  r9,  r5
        ldr             r9,  [r1], #4
6:
        mla             r4,  r7,  r9,  r4
        ldm             r0,  {r6, r7}
        add_sh          r6,  r6,  r4,  asr r3
        mla             r5,  r6,  r9,  r5
        add_sh          r7,  r7,  r5,  asr r3
        stm             r0!, {r6, r7}
        sub             r0,  r0,  r2,  lsl #2
        sub             r1,  r1,  r2,  lsl #2

        subs            r12, r12, #2
        bgt             1b
        it              lt
        poplt           {r4-r9, pc}
3:
        mov             r4,  #0
4:
        ldr             r5,  [r1], #4
        ldr             r6,  [r0], #4
        mla             r4,  r5,  r6,  r4
        subs            r2,  r2,  #1
        bgt             4b
        ldr             r5,  [r0]
        add_sh          r5,  r5,  r4,  asr r3
        str             r5,  [r0]
        pop             {r4-r9, pc}
endfunc
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2012 Mans Rullgard <mans@mansr.com>
	3	*
	4	* This file is part of FFmpeg
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include "libavutil/arm/asm.S"
	22
	23	function flac_lpc_16_1_arm
	24	ldr r12, [sp]
	25	push {r4, lr}
	26	ldr r1, [r1]
	27	subs r12, r12, #2
	28	ldr lr, [r0], #4
	29	beq 2f
	30	it lt
	31	poplt {r4, pc}
	32	1:
	33	mul r4, lr, r1
	34	ldm r0, {r2, lr}
	35	add_sh r2, r2, r4, asr r3
	36	mul r4, r2, r1
	37	subs r12, r12, #2
	38	add_sh lr, lr, r4, asr r3
	39	stm r0!, {r2, lr}
	40	bgt 1b
	41	it lt
	42	poplt {r4, pc}
	43	2:
	44	mul r4, lr, r1
	45	ldr r2, [r0]
	46	add_sh r2, r2, r4, asr r3
	47	str r2, [r0]
	48	pop {r4, pc}
	49	endfunc
	50
	51	function flac_lpc_16_2_arm
	52	ldr r12, [sp]
	53	subs r12, r12, r2
	54	it le
	55	bxle lr
	56
	57	push {r4-r9, lr}
	58	ldm r0!, {r6, r7}
	59	ldm r1, {r8, r9}
	60	subs r12, r12, #1
	61	beq 2f
	62	1:
	63	mul r4, r6, r8
	64	mul r5, r7, r8
65	mla r4, r7, r9, r4
66	ldm r0, {r6, r7}
67	add_sh r6, r6, r4, asr r3
68	mla r5, r6, r9, r5
69	add_sh r7, r7, r5, asr r3
70	stm r0!, {r6, r7}
71	subs r12, r12, #2
72	bgt 1b
73	it lt
74	poplt {r4-r9, pc}
75	2:
76	mul r4, r6, r8
77	mla r4, r7, r9, r4
78	ldr r5, [r0]
79	add_sh r5, r5, r4, asr r3
80	str r5, [r0]
81	pop {r4-r9, pc}
82	endfunc
83
84	function ff_flac_lpc_16_arm, export=1
85	cmp r2, #2
86	blt flac_lpc_16_1_arm
87	beq flac_lpc_16_2_arm
88
89	ldr r12, [sp]
90	subs r12, r12, r2
91	it le
92	bxle lr
93
94	push {r4-r9, lr}
95
96	subs r12, r12, #1
97	beq 3f
98	1:
99	sub lr, r2, #2
100	mov r4, #0
101	mov r5, #0
102
103	ldr r7, [r0], #4
104	ldr r9, [r1], #4
105	2:
106	mla r4, r7, r9, r4
107	ldm r0!, {r6, r7}
108	mla r5, r6, r9, r5
109	ldm r1!, {r8, r9}
110	mla r4, r6, r8, r4
111	subs lr, lr, #2
112	mla r5, r7, r8, r5
113	bgt 2b
114	blt 6f
115
116	mla r4, r7, r9, r4
117	ldr r7, [r0], #4
118	mla r5, r7, r9, r5
119	ldr r9, [r1], #4
120	6:
121	mla r4, r7, r9, r4
122	ldm r0, {r6, r7}
123	add_sh r6, r6, r4, asr r3
124	mla r5, r6, r9, r5
125	add_sh r7, r7, r5, asr r3
126	stm r0!, {r6, r7}
127	sub r0, r0, r2, lsl #2
128	sub r1, r1, r2, lsl #2
129
130	subs r12, r12, #2
131	bgt 1b
132	it lt
133	poplt {r4-r9, pc}
134	3:
135	mov r4, #0
136	4:
137	ldr r5, [r1], #4
138	ldr r6, [r0], #4
139	mla r4, r5, r6, r4
140	subs r2, r2, #1
141	bgt 4b
142	ldr r5, [r0]
143	add_sh r5, r5, r4, asr r3
144	str r5, [r0]
145	pop {r4-r9, pc}
146	endfunc