Revision bd4110f9 libavcodec/mpc7.c
| libavcodec/mpc7.c | ||
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| 40 | 40 |
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static VLC scfi_vlc, dscf_vlc, hdr_vlc, quant_vlc[MPC7_QUANT_VLC_TABLES][2]; |
| 42 | 42 |
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static uint16_t quant_offsets[MPC7_QUANT_VLC_TABLES*2 + 1] = |
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{
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0, 512, 1024, 1536, 2052, 2564, 3076, 3588, 4100, 4612, 5124, |
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5636, 6164, 6676, 7224 |
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}; |
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static av_cold int mpc7_decode_init(AVCodecContext * avctx) |
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{
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int i, j; |
| ... | ... | |
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uint8_t buf[16]; |
| 49 | 56 |
static int vlc_initialized = 0; |
| 50 | 57 |
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static VLC_TYPE scfi_table[1 << MPC7_SCFI_BITS][2]; |
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static VLC_TYPE dscf_table[1 << MPC7_DSCF_BITS][2]; |
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static VLC_TYPE hdr_table[1 << MPC7_HDR_BITS][2]; |
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static VLC_TYPE quant_tables[7224][2]; |
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if(avctx->extradata_size < 16){
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av_log(avctx, AV_LOG_ERROR, "Too small extradata size (%i)!\n", avctx->extradata_size); |
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return -1; |
| ... | ... | |
| 75 | 87 |
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if(vlc_initialized) return 0; |
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av_log(avctx, AV_LOG_DEBUG, "Initing VLC\n"); |
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scfi_vlc.table = scfi_table; |
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scfi_vlc.table_allocated = 1 << MPC7_SCFI_BITS; |
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if(init_vlc(&scfi_vlc, MPC7_SCFI_BITS, MPC7_SCFI_SIZE, |
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&mpc7_scfi[1], 2, 1, |
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&mpc7_scfi[0], 2, 1, INIT_VLC_USE_STATIC)){
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&mpc7_scfi[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
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av_log(avctx, AV_LOG_ERROR, "Cannot init SCFI VLC\n"); |
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return -1; |
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} |
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dscf_vlc.table = dscf_table; |
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dscf_vlc.table_allocated = 1 << MPC7_DSCF_BITS; |
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if(init_vlc(&dscf_vlc, MPC7_DSCF_BITS, MPC7_DSCF_SIZE, |
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&mpc7_dscf[1], 2, 1, |
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&mpc7_dscf[0], 2, 1, INIT_VLC_USE_STATIC)){
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&mpc7_dscf[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
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av_log(avctx, AV_LOG_ERROR, "Cannot init DSCF VLC\n"); |
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return -1; |
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} |
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hdr_vlc.table = hdr_table; |
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hdr_vlc.table_allocated = 1 << MPC7_HDR_BITS; |
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if(init_vlc(&hdr_vlc, MPC7_HDR_BITS, MPC7_HDR_SIZE, |
| 91 | 109 |
&mpc7_hdr[1], 2, 1, |
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&mpc7_hdr[0], 2, 1, INIT_VLC_USE_STATIC)){
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&mpc7_hdr[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
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av_log(avctx, AV_LOG_ERROR, "Cannot init HDR VLC\n"); |
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return -1; |
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} |
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for(i = 0; i < MPC7_QUANT_VLC_TABLES; i++){
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for(j = 0; j < 2; j++){
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quant_vlc[i][j].table = &quant_tables[quant_offsets[i*2 + j]]; |
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quant_vlc[i][j].table_allocated = quant_offsets[i*2 + j + 1] - quant_offsets[i*2 + j]; |
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if(init_vlc(&quant_vlc[i][j], 9, mpc7_quant_vlc_sizes[i], |
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&mpc7_quant_vlc[i][j][1], 4, 2, |
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&mpc7_quant_vlc[i][j][0], 4, 2, INIT_VLC_USE_STATIC)){
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&mpc7_quant_vlc[i][j][0], 4, 2, INIT_VLC_USE_NEW_STATIC)){
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av_log(avctx, AV_LOG_ERROR, "Cannot init QUANT VLC %i,%i\n",i,j); |
| 102 | 122 |
return -1; |
| 103 | 123 |
} |
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