H264 Decoder for C6472 EVM

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We will get back to you on the above query shortly. Thank you for your patience.

Hi Nguyen,

The h264 decoder version 2.00.002 is not validated on c6472. To Validate it on C6472 the memory command file (H264VDecApp.cmd in packages\ti\sdo\codecs\h264dec\app\Client\Build) need to be updated according to the C6472 memory map (Please refer to C6472 data sheet http://www.ti.com/lit/ds/symlink/tms320c6472.pdf

Hi Praveen, 

I changed memory command file as follow:

+ In linker.cmd :

MEMORY
{
SL2RAM (RWX) : org = 0x200000, len = 0xc0000
L1DSRAM (RW) : org = 0xf00000, len = 0x8000
L1PSRAM (RWX) : org = 0xe00000, len = 0x8000
LL2RAM (RWX) : org = 0x800000, len = 0x98000
ERAM (RWX) : org = 0xe0000000, len = 0x10000000
}

+ In H264VDecApp.cmd file:

-stack 0x30000
-heap 0x1D00000

/* Sections related to BP H.264 decoder library */
SECTIONS
{
.const:H264VDEC_TI_dSect1 > ERAM, align=0x80
.far:H264VDEC_TI_uSect1 > ERAM, align=0x80
.text:H264VDEC_TI_cSect1 > ERAM, align=0x10000
}

//_DMAN3_EDMA3BASE = 0x01C04000;
/* Sections related to app */
SECTIONS
{
/**********************/
/* L1D Memory Section */
/**********************/
UDRAM_INTMEM : > LL2RAM

/********************/
/* Generic sections */
/********************/
.text : > ERAM
.cinit : > ERAM
.cio : > ERAM
.const : > ERAM
.switch : > ERAM
.args : > ERAM
.bss : > ERAM
.bios : > ERAM

/************************/
/* RTS library sections */
/************************/
.rtsconst : { -lrts64plus.lib (.const) } > ERAM
rts_sect : { -lrts64plus.lib (.text) } > ERAM

/************************/
/* External Heap Memory */
/************************/
.sysmem : align(0x100) > ERAM

/******************************************/
/* External Stack and I/O Memory Sections */
/******************************************/
.stack : fill=0xc0ffee align(0x8000) > ERAM
.input_buffer : align(0x100) > ERAM
.display_buffer: align(0x100) > ERAM
.ref_buffer : align(0x100) > ERAM
.far : align(0x100) > ERAM
}

I also change source code : 

XDAS_Void TestApp_EnableCache(void)
{
BCACHE_Size size;

size.l1psize = BCACHE_L1_32K; /* L1P cache size */
size.l1dsize = BCACHE_L1_16K; /* L1D cache size */
size.l2size = BCACHE_L2_64K; /* L2 cache size */

/* Set L1P, L1D and L2 cache sizes */
BCACHE_setSize(&size);

/* Cache Enable External Memory Space */
/* BaseAddr, length, MAR enable/disable */
/* Cache 0x80000000 --- 0x8FFFFFFF */
BCACHE_setMar((Ptr *)0xe0000000, 0x10000000, BCACHE_MAR_ENABLE);

BCACHE_wbInvAll(); /* No need to call BCACHE_wait() */
} /* TestApp_EnableCache */

The issue is not fixed. The program is suspended at  H264MPVDEC_TI_QDMA_wait  function. Do you know what is the problem?

About using h264 decoder for C6678. I study sample source code, it is more complex than 2.00.002 version and the C6678 uses RMAN. Do you think RMAN can run on c6472 ?

Thanks,

Lang

Also,  in disassembly H264MPVDEC_TI_QDMA_wait  function, I see the value 0x1c00000. The value is address EDMA3 CC for DM6446 version, in C6472 EDMA3 CC  address is 0x02A00000.

e2be7b5c: EA62B300 .fphead n, l, W, HU, br, nosat, 1010011
e2be7b60: 0333 || MVK.S2 32,B6
e2be7b62: 2C2B [ B0] BNOP.S2 0xE2BE7BA0 (PC+96 = 0xe2be7ba0),1
e2be7b64: 018C92F9 || SUB.L1X B4,A3,A3
e2be7b68: 0380E069 || MVKH.S1 0x1c00000,A7
e2be7b6c: B247 || MV.L2X A4,B5
e2be7b6e: C876 || [!B0] MVK.D1 0,A0
e2be7b70: 02906CE0 SHL.S1 A4,A3,A5

Do you think the library can be work in C6472?

Brs,

Lang

Hi Paula,

Thanks for your replying. I will contact them soon. But I get the H264 lib in your website free, could I get the new lib free from CouthIT?

Brs,

Lang

Hi Paula,

If I want MPEG4 codec library for C6472, which TI third party I will contact ?

Brs,

Lang

Hi Lang, for MPEG4 codecs is also CouthIT.

Thank you,

Paula