diff options
Diffstat (limited to 'ffmpeg/libavcodec/mqc.c')
| -rw-r--r-- | ffmpeg/libavcodec/mqc.c | 147 |
1 files changed, 77 insertions, 70 deletions
diff --git a/ffmpeg/libavcodec/mqc.c b/ffmpeg/libavcodec/mqc.c index 700b957..f8294cd 100644 --- a/ffmpeg/libavcodec/mqc.c +++ b/ffmpeg/libavcodec/mqc.c @@ -20,89 +20,96 @@ */ /** - * MQ-coder ecoder and decoder common functions + * MQ-coder common (decoder/encoder) functions * @file * @author Kamil Nowosad */ +#include <string.h> +#include <stdint.h> + #include "mqc.h" -typedef struct { - uint16_t qe; - uint8_t nmps; - uint8_t nlps; - uint8_t sw; +/* MQ coder context state structure */ +typedef struct MqcCxState { + uint16_t qe; + uint8_t nmps; + uint8_t nlps; + uint8_t sw; } MqcCxState; -const static MqcCxState cx_states[47] = { - {0x5601, 1, 1, 1}, - {0x3401, 2, 6, 0}, - {0x1801, 3, 9, 0}, - {0x0AC1, 4, 12, 0}, - {0x0521, 5, 29, 0}, - {0x0221, 38, 33, 0}, - {0x5601, 7, 6, 1}, - {0x5401, 8, 14, 0}, - {0x4801, 9, 14, 0}, - {0x3801, 10, 14, 0}, - {0x3001, 11, 17, 0}, - {0x2401, 12, 18, 0}, - {0x1C01, 13, 20, 0}, - {0x1601, 29, 21, 0}, - {0x5601, 15, 14, 1}, - {0x5401, 16, 14, 0}, - {0x5101, 17, 15, 0}, - {0x4801, 18, 16, 0}, - {0x3801, 19, 17, 0}, - {0x3401, 20, 18, 0}, - {0x3001, 21, 19, 0}, - {0x2801, 22, 19, 0}, - {0x2401, 23, 20, 0}, - {0x2201, 24, 21, 0}, - {0x1C01, 25, 22, 0}, - {0x1801, 26, 23, 0}, - {0x1601, 27, 24, 0}, - {0x1401, 28, 25, 0}, - {0x1201, 29, 26, 0}, - {0x1101, 30, 27, 0}, - {0x0AC1, 31, 28, 0}, - {0x09C1, 32, 29, 0}, - {0x08A1, 33, 30, 0}, - {0x0521, 34, 31, 0}, - {0x0441, 35, 32, 0}, - {0x02A1, 36, 33, 0}, - {0x0221, 37, 34, 0}, - {0x0141, 38, 35, 0}, - {0x0111, 39, 36, 0}, - {0x0085, 40, 37, 0}, - {0x0049, 41, 38, 0}, - {0x0025, 42, 39, 0}, - {0x0015, 43, 40, 0}, - {0x0009, 44, 41, 0}, - {0x0005, 45, 42, 0}, - {0x0001, 45, 43, 0}, - {0x5601, 46, 46, 0} +static const MqcCxState cx_states[47] = { + { 0x5601, 1, 1, 1 }, + { 0x3401, 2, 6, 0 }, + { 0x1801, 3, 9, 0 }, + { 0x0AC1, 4, 12, 0 }, + { 0x0521, 5, 29, 0 }, + { 0x0221, 38, 33, 0 }, + { 0x5601, 7, 6, 1 }, + { 0x5401, 8, 14, 0 }, + { 0x4801, 9, 14, 0 }, + { 0x3801, 10, 14, 0 }, + { 0x3001, 11, 17, 0 }, + { 0x2401, 12, 18, 0 }, + { 0x1C01, 13, 20, 0 }, + { 0x1601, 29, 21, 0 }, + { 0x5601, 15, 14, 1 }, + { 0x5401, 16, 14, 0 }, + { 0x5101, 17, 15, 0 }, + { 0x4801, 18, 16, 0 }, + { 0x3801, 19, 17, 0 }, + { 0x3401, 20, 18, 0 }, + { 0x3001, 21, 19, 0 }, + { 0x2801, 22, 19, 0 }, + { 0x2401, 23, 20, 0 }, + { 0x2201, 24, 21, 0 }, + { 0x1C01, 25, 22, 0 }, + { 0x1801, 26, 23, 0 }, + { 0x1601, 27, 24, 0 }, + { 0x1401, 28, 25, 0 }, + { 0x1201, 29, 26, 0 }, + { 0x1101, 30, 27, 0 }, + { 0x0AC1, 31, 28, 0 }, + { 0x09C1, 32, 29, 0 }, + { 0x08A1, 33, 30, 0 }, + { 0x0521, 34, 31, 0 }, + { 0x0441, 35, 32, 0 }, + { 0x02A1, 36, 33, 0 }, + { 0x0221, 37, 34, 0 }, + { 0x0141, 38, 35, 0 }, + { 0x0111, 39, 36, 0 }, + { 0x0085, 40, 37, 0 }, + { 0x0049, 41, 38, 0 }, + { 0x0025, 42, 39, 0 }, + { 0x0015, 43, 40, 0 }, + { 0x0009, 44, 41, 0 }, + { 0x0005, 45, 42, 0 }, + { 0x0001, 45, 43, 0 }, + { 0x5601, 46, 46, 0 } }; -uint16_t ff_mqc_qe [2*47]; -uint8_t ff_mqc_nlps[2*47]; -uint8_t ff_mqc_nmps[2*47]; +uint16_t ff_mqc_qe [2 * 47]; +uint8_t ff_mqc_nlps[2 * 47]; +uint8_t ff_mqc_nmps[2 * 47]; -void ff_mqc_init_contexts(MqcState *mqc) +void ff_mqc_init_context_tables(void) { int i; - memset(mqc->cx_states, 0, sizeof(mqc->cx_states)); - mqc->cx_states[MQC_CX_UNI] = 2 * 46; - mqc->cx_states[MQC_CX_RL] = 2 * 3; - mqc->cx_states[0] = 2 * 4; - - for (i = 0; i < 47; i++){ - ff_mqc_qe[2*i ] = - ff_mqc_qe[2*i+1] = cx_states[i].qe; + for (i = 0; i < 47; i++) { + ff_mqc_qe[2 * i] = + ff_mqc_qe[2 * i + 1] = cx_states[i].qe; - ff_mqc_nlps[2*i ] = 2*cx_states[i].nlps + cx_states[i].sw; - ff_mqc_nlps[2*i+1] = 2*cx_states[i].nlps + 1 - cx_states[i].sw; - ff_mqc_nmps[2*i ] = 2*cx_states[i].nmps; - ff_mqc_nmps[2*i+1] = 2*cx_states[i].nmps + 1; + ff_mqc_nlps[2 * i] = 2 * cx_states[i].nlps + cx_states[i].sw; + ff_mqc_nlps[2 * i + 1] = 2 * cx_states[i].nlps + 1 - cx_states[i].sw; + ff_mqc_nmps[2 * i] = 2 * cx_states[i].nmps; + ff_mqc_nmps[2 * i + 1] = 2 * cx_states[i].nmps + 1; } } + +void ff_mqc_init_contexts(MqcState *mqc) +{ + memset(mqc->cx_states, 0, sizeof(mqc->cx_states)); + mqc->cx_states[MQC_CX_UNI] = 2 * 46; + mqc->cx_states[MQC_CX_RL] = 2 * 3; + mqc->cx_states[0] = 2 * 4; +} |