kopia lustrzana https://github.com/hoglet67/RGBtoHDMI
rodzic
da2ac6adc9
commit
e321a793e8
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@ -39,49 +39,44 @@ capture_line_default_8bpp:
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push {lr}
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mov r12, r0 // pointer to the line in the frame buffer
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mov r6, r1 // number of 8-bit characters per line
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mov r6, #0
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ldr r7, =0x01010101
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loop:
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WAIT_FOR_PSYNC_10
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CAPTURE_BITS
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// Orr in the VSync indicator
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ldr r8, =0x01010101
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tst r3, #BIT_VSYNC_MARKER
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orrne r10, r10, r8
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orrne r10, r10, r7
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// Line double always in Modes 0-6 regardless of interlace
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// On the multi core Pi this introduces stalling artefacts
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#ifndef HAS_MULTICORE
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tst r3, #BIT_SCANLINES
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movne r0, #0
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moveq r0, r10
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str r0, [r12, r2]
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streq r10, [r0, r2]
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strne r6, [r0, r2]
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#endif
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str r10, [r12], #4
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str r10, [r0], #4
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WAIT_FOR_PSYNC_01
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CAPTURE_BITS
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// Orr in the VSync indicator
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ldr r8, =0x01010101
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tst r3, #BIT_VSYNC_MARKER
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orrne r10, r10, r8
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orrne r10, r10, r7
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// Line double always in Modes 0-6 regardless of interlace
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// On the multi core Pi this introduces stalling artefacts
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#ifndef HAS_MULTICORE
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tst r3, #BIT_SCANLINES
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movne r0, #0
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moveq r0, r10
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str r0, [r12, r2]
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streq r10, [r0, r2]
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strne r6, [r0, r2]
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#endif
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str r10, [r12], #4
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str r10, [r0], #4
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subs r6, r6, #1
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subs r1, r1, #1
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bne loop
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exit:
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