Added copyright header

1 files changed, 21 insertions, 0 deletions

diff --git a/noncore/multimedia/opieplayer2/yuv2rgb_arm4l.S b/noncore/multimedia/opieplayer2/yuv2rgb_arm4l.S
index f4a3395..521bcaa 100644
--- a/noncore/multimedia/opieplayer2/yuv2rgb_arm4l.S
+++ b/noncore/multimedia/opieplayer2/yuv2rgb_arm4l.S
@@ -1,192 +1,213 @@
+/*
+Copyright (c) 2001 Lionel Ulmer (lionel.ulmer@free.fr / bbrox@bbrox.org)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
 /* WARNING : this function only works when stride_U == stride_V (I use some hacks to
 	     not have to do too many computations at line's end)...
 
    C-like prototype :
 	void convert_yuv420_rgb565(AVPicture *picture, unsigned char *results, int w, int h) ;
 
 */
 
 #ifdef __arm__
 
 	.text
 	.align
 	
 	.global convert_yuv420_rgb565
 convert_yuv420_rgb565:
 	stmdb   sp!, { r4 - r12, lr }   @ all callee saved regs
 	ldr r7,  [r0,  #0]       @ Y ptr
 	ldr r9,  [r0,  #4]       @ U ptr
 	ldr r10, [r0,  #8]       @ V ptr
 	subs r10, r10, r9        @ V ptr - U ptr
 	ldr r8,  [r0, #12]
 	add r8, r8, r7           @ Y + stride_Y
 	ldr r4,  [r0, #12]       @ Stride_Y
 	mov r4, r4, lsl #1
 	sub r4, r4, r2           @ (2 * Stride_Y) - width
 	ldr r5,  [r0, #16]       @ Stride_U
 	sub r5, r5, r2, lsr #1   @ Stride_U - (width / 2)
 	ldr r6,  [r0, #20]       @ Stride_V
 	sub r6, r6, r2, lsr #1   @ Stride_V - (width / 2)
 	add r0, r1, r2, lsl #1   @ RGB + 1
 	stmdb   sp!, { r0-r10 }
 	@ Stack description :
 	@ (sp+ 0) RGB + one line
 	@ (sp+ 4) RGB
 	@ (sp+ 8) width (save)
 	@ (sp+12) height
 	@ (sp+16) (2 * stride_Y) - width
 	@ (sp+20) stride_U - (width / 2)
 	@ (sp+24) stride_V - (width / 2) !!! UNUSED !!!
 	@ (sp+28) Y ptr
 	@ (sp+32) Y ptr + one line
 	@ (sp+36) U ptr
 	@ (sp+40) V - U
 	mov lr, r2                         @ Initialize the width counter
 	add r0, pc, #(const_storage-.-8)   @ r0 = base pointer to the constants array
 	ldr r8, [r0, #(4*4)]               @ r8 = multy	
 yuv_loop:
 	add r0, pc, #(const_storage-.-8)   @ r0 = base pointer to the constants array
 	ldr r10, [sp, #28]                 @ r10 = Y
 	ldr r1, [sp, #36]                  @ r1 = U
 	ldrb r9, [r10, #0]                 @ r9 = *Y
 	ldrb r11, [r1]                     @ r11 = *U
 	add r1, r1, #1                     @ r1 = U++
 	ldr r2, [sp, #40]                  @ r2 = V - U
 	str r1, [sp, #36]                  @ store U++
 	add r2, r1, r2                     @ r2 = V+1
 	ldrb r12, [r2, #-1]                @ r12 = *V
 	sub r11, r11, #128                 @ r11 = *U - 128
 	sub r12, r12, #128                 @ r12 = *V - 128
 	ldr r1, [r0, #(4*0)]               @ r1 = crv
 	mov r7, #32768                     @ r7 = 32768 (for additions in MLA)
 	ldr r2, [r0, #(4*3)]               @ r2 = -cgv
 	mla r6, r1, r12, r7                @ r6 = nonyc_r = crv * (*V - 128) + 32768
 	ldr r3, [r0, #(4*1)]               @ r3 = cbu
 	mla r4, r2, r12, r7                @ r4 = - cgv * (*V - 128) + 32768
 	sub r9, r9, #16                    @ r9 = *Y - 16
 	mla r5, r3, r11, r7                @ r5 = nonyc_b = cbu * (*U - 128) + 32768	
 	ldr r0, [r0, #(4*2)]               @ r0 = -cgu
 	mla r7, r8, r9, r6                 @ r7 = (*Y - 16) * multy + nonyc_r
 	add r10, r10, #2                   @ r10 = Y + 2
 	mla r4, r0, r11, r4                @ r4 = nonyc_g = - cgu * (*U - 128) + r4 = - cgu * (*U - 128) - cgv * (*V - 128) + 32768
 	add r0, pc, #(rb_clip-.-8)         @ r0 contains the pointer to the R and B clipping array
 	mla r12, r8, r9, r5                @ r12 = (*Y - 16) * multy + nonyc_b
 	ldrb r7, [r0, r7, asr #(16+3)]     @ r7 = R composant
 	mla r1, r8, r9, r4                 @ r1 = (*Y - 16) * multy + nonyc_g
 	ldrb r9, [r10, #-1]                @ r9 = *(Y+1)
 	str r10, [sp, #28]                 @ save Y + 2
 	ldrb r12, [r0, r12, asr #(16+3)]   @ r12 = B composant (and the start of the RGB word)
 	add r11, pc, #(g_clip-.-8)         @ r11 now contains the pointer to the G clipping array
 	ldrb r1, [r11, r1, asr #(16+2)]    @ r1 contains the G part of the RGB triplet
 	sub r9, r9, #16                    @ r9 = *(Y+1) - 16
 	mla r10, r8, r9, r6                @ r10 is the Red part of the RGB triplet
 	add r12, r12, r7, lsl #11          @ r12 = .GB ...
 	mla r7, r8, r9, r5                 @ r7 is the Blue part of the RGB triplet
 	add r12, r12, r1, lsl #5           @ r12 = RGB ... (ie the first pixel (half-word) is done)
 	mla r2, r8, r9, r4                 @ r2 is the Green part of the RGB triplet
 	ldrb r10, [r0, r10, asr #(16+3)]   @ r10 = R composant
 	ldrb r7, [r0, r7, asr #(16+3)]     @ r7 = B composant
 	ldr r1, [sp, #32]                  @ r1 = Ynext
 	ldrb r2, [r11, r2, asr #(16+2)]    @ r2 = G composant
 	ldrb r9, [r1]                      @ r9 = *Ynext
 	add r12, r12, r2, lsl #(5+16)      @ r12 = RGB .G.
 	sub r9, r9, #16                    @ r9 = *Ynext - 16
 	mla r2, r8, r9, r4                 @ r2 is the Green part of the RGB triplet
 	add r12, r12, r7, lsl #(0+16)      @ r12 = RGB .GB
 	mla r7, r8, r9, r5                 @ r7 is the Blue part of the RGB triplet
 	add r12, r12, r10, lsl #(11+16)    @ r12 = RGB RGB
 	ldr r3, [sp, #4]                   @ r3 = RGB
 	mla r10, r8, r9, r6                @ r10 is the Red part of the RGB triplet
 	str r12, [r3]                      @ store the rgb pixel at *RGB
 	add r3, r3, #4                     @ r3 = RGB++ (ie next double-pixel)
 	str r3, [sp, #4]                   @ store the RGB pointer
 	ldrb r9, [r1, #1]                  @ r9 = *(Ynext+1)
 	add r1, r1, #2                     @ r1 = Ynext + 2
 	sub r9, r9, #16                    @ r9 = *(Ynext+1) - 16
 	ldrb r12, [r0, r7, asr #(16+3)]    @ r12 = ..B ...
 	ldrb r10, [r0, r10, asr #(16+3)]   @ r10 = B composant
 	mla r7, r8, r9, r5                 @ r7 is the Blue part of the RGB triplet
 	add r12, r12, r10, lsl #11         @ r12 = R.B ...
 	ldrb r2, [r11, r2, asr #(16+2)]    @ r2 = G composant
 	mla r10, r8, r9, r6                @ r10 is the Red part of the RGB triplet
 	add r12, r12, r2, lsl #5           @ r12 = RGB ...
 	mla r2, r8, r9, r4                 @ r2 is the Green part of the RGB triplet
 	ldrb r7, [r0, r7, asr #(16+3)]     @ r7 = B composant
 	str r1, [sp, #32]                  @ store the increased Ynext pointer
 	add r12, r12, r7, lsl #(16+0)      @ r12 = RGB ..B
 	ldrb r10, [r0, r10, asr #(16+3)]   @ r10 = R composant
 	ldr r3, [sp, #0]                   @ r3 = RGBnext pointer
 	add r12, r12, r10, lsl #(16+11)    @ r12 = RGB R.B
 	ldrb r2, [r11, r2, asr #(16+2)]    @ r2 = G composant
 	add r3, r3, #4                     @ r3 = next pixel on the RGBnext line
 	add r12, r12, r2, lsl #(16+5)      @ r12 = RGB RGB
 	str r12, [r3, #-4]                 @ store the next pixel
 	str r3, [sp, #0]                   @ store the increased 'next line' pixel pointer
 	subs lr, lr, #2                    @ decrement the line counter
 	bne yuv_loop                       @ and restart if not at the end of the line
 
 	ldr r0, [sp, #8]                   @ r0 = saved width
 	ldr r1, [sp, #0]                   @ r1 = RGBnext pointer
 	mov lr, r0                         @ lr = saved width (to restart the line counter)
 	str r1, [sp, #4]                   @ current RGBnext pointer is next iteration RGB pointer
 	add r1, r1, r0, lsl #1             @ r1 = update RGBnext to next line
 	str r1, [sp, #0]                   @ store updated RGBnext pointer
 
 	ldr r3, [sp, #16]                  @ r3 = (2 * stride_Y) - width
 	ldr r4, [sp, #28]                  @ r4 = Y ptr
 	ldr r5, [sp, #32]                  @ r5 = Ynext ptr
 	add r4, r4, r3                     @ r4 = Y ptr for the next two lines
 	add r5, r5, r3                     @ r5 = Ynext ptr for the next two lines
 	str r4, [sp, #28]                  @ store updated Y pointer
 	str r5, [sp, #32]                  @ store update Ynext pointer
 
 	ldr r1, [sp, #20]                  @ r1 = stride_U - (width / 2)
 	ldr r2, [sp, #36]                  @ r2 = U ptr
 
 	ldr r6, [sp, #12]                  @ get height counter
 	
 	add r2, r2, r1                     @ update U ptr
 	str r2, [sp, #36]                  @ store updated U ptr (and update 'V' at the same time :-) )
 
 	subs r6, r6, #2
 	str r6, [sp, #12]
 	bne yuv_loop
 	
 	@ Exit cleanly :-)
 	add sp, sp, #(11*4)             @ remove all custom things from stack
 	ldmia   sp!, { r4 - r12, pc }   @ restore callee saved regs and return
 
 
 const_storage:
 	@ In order : crv, cbu, - cgu, - cgv, multy
 	.word 0x00019895, 0x00020469, 0xffff9bb5, 0xffff2fe1, 0x00012A15
 rb_clip_dummy:	
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
 rb_clip:
         .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
         .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f
         .byte 0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f
         .byte 0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f
         .byte 0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f
 g_clip_dummy:	
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
         .byte 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
 g_clip:	
         .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
         .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f
         .byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f
         .byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
         .byte 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f
 
 #endif