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| author | Nicolas Bertrand <nicoinattendu@gmail.com> | 2013-07-12 23:01:43 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-07-12 23:43:09 +0200 |
| commit | dd1382ac9534bd9b5ec7833eed9ab6f383e68a50 (patch) | |
| tree | b9a3d04b87897df874a124d3699f75122b223fa1 | |
| parent | 7f4a1fddd39e331464e443f95f10e225882b5c53 (diff) | |
| download | ffmpeg-dd1382ac9534bd9b5ec7833eed9ab6f383e68a50.tar.gz | |
jpeg2000: Initialize only once mqc arrays
Increases encoding and decoding speed
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/j2kenc.c | 2 | ||||
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 1 | ||||
| -rw-r--r-- | libavcodec/mqc.c | 15 | ||||
| -rw-r--r-- | libavcodec/mqc.h | 5 |
4 files changed, 16 insertions, 7 deletions
diff --git a/libavcodec/j2kenc.c b/libavcodec/j2kenc.c index e4c84efd1a..48c1db8071 100644 --- a/libavcodec/j2kenc.c +++ b/libavcodec/j2kenc.c @@ -1016,7 +1016,7 @@ static av_cold int j2kenc_init(AVCodecContext *avctx) } ff_jpeg2000_init_tier1_luts(); - + ff_mqc_init_context_tables(); init_luts(); init_quantization(s); diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 4018dc904d..e2a9a95f3e 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1466,6 +1466,7 @@ end: static void jpeg2000_init_static_data(AVCodec *codec) { ff_jpeg2000_init_tier1_luts(); + ff_mqc_init_context_tables(); } #define OFFSET(x) offsetof(Jpeg2000DecoderContext, x) diff --git a/libavcodec/mqc.c b/libavcodec/mqc.c index 288570d309..f8294cd54c 100644 --- a/libavcodec/mqc.c +++ b/libavcodec/mqc.c @@ -92,14 +92,9 @@ 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; @@ -110,3 +105,11 @@ void ff_mqc_init_contexts(MqcState *mqc) 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; +} diff --git a/libavcodec/mqc.h b/libavcodec/mqc.h index a0112d1159..c0827bd526 100644 --- a/libavcodec/mqc.h +++ b/libavcodec/mqc.h @@ -79,6 +79,11 @@ int ff_mqc_decode(MqcState *mqc, uint8_t *cxstate); /* common */ /** + * MQ-coder Initialize context tables (QE, NLPS, NMPS) + */ +void ff_mqc_init_context_tables(void); + +/** * MQ-coder context initialisations. * @param mqc MQ-coder context */ |