osmo-sdr/firmware/include/fast_source.h @ master
1 | e81bf0ed | Harald Welte | |
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2 | #include <stdint.h>
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3 | |||
4 | #include "req_ctx.h"
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5 | |||
6 | /* Some thoughts:
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7 | * If we're running at 1MS/s, and the USB-HS microframe occurs every 125uS, we
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8 | * need to transfer 125 samples at eech microframe. 125 samples with 2
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9 | * channels of 2 bytes equals 500 bytes.
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10 | */
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11 | |||
12 | #define AUDDLoopRecDriver_SAMPLERATE 500000
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13 | #define AUDDLoopRecDriver_NUMCHANNELS 2
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14 | #define AUDDLoopRecDriver_BYTESPERSAMPLE 2
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15 | |||
16 | #if 0
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17 | #define AUDDLoopRecDriver_SAMPLESPERFRAME (AUDDLoopRecDriver_SAMPLERATE / 8000 \
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18 | * AUDDLoopRecDriver_NUMCHANNELS)
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19 | |||
20 | #else
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21 | #define AUDDLoopRecDriver_SAMPLESPERFRAME (128 * AUDDLoopRecDriver_NUMCHANNELS)
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22 | #endif
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23 | |||
24 | #define AUDDLoopRecDriver_BYTESPERFRAME (AUDDLoopRecDriver_SAMPLESPERFRAME * \
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25 | AUDDLoopRecDriver_BYTESPERSAMPLE)
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26 | |||
27 | #include <usb/common/core/USBGenericRequest.h>
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28 | |||
29 | d7cc6950 | Harald Welte | extern unsigned char fastsource_interfaces[3]; |
30 | |||
31 | e81bf0ed | Harald Welte | void fastsource_init(void); |
32 | void fastsource_start(void); |
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33 | b93708ed | Christian Daniel | void fastsource_dump(void); |
34 | e81bf0ed | Harald Welte | |
35 | void usb_submit_req_ctx(struct req_ctx *rctx); |