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convert only needed matrixes in convert_matrix() (mjpeg calls it for every frame) 

Originally committed as revision 983 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-09-30 09:19:54 +00:00
parent 9b59c92f47
commit cc7ac88830
1 changed files with 5 additions and 5 deletions
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10
libavcodec/mpegvideo.c
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@ -80,11 +80,11 @@ static UINT8 default_fcode_tab[MAX_MV*2+1];
int motion_estimation_method = ME_EPZS;
static void convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[64], uint16_t (*qmat16_bias)[64],
const UINT16 *quant_matrix, int bias)
const UINT16 *quant_matrix, int bias, int qmin, int qmax)
{
int qscale;
for(qscale=1; qscale<32; qscale++){
for(qscale=qmin; qscale<=qmax; qscale++){
int i;
if (s->fdct == ff_jpeg_fdct_islow) {
for(i=0;i<64;i++) {
@ -680,9 +680,9 @@ int MPV_encode_init(AVCodecContext *avctx)
/* for mjpeg, we do include qscale in the matrix */
if (s->out_format != FMT_MJPEG) {
convert_matrix(s, s->q_intra_matrix, s->q_intra_matrix16, s->q_intra_matrix16_bias,
s->intra_matrix, s->intra_quant_bias);
s->intra_matrix, s->intra_quant_bias, 1, 31);
convert_matrix(s, s->q_inter_matrix, s->q_inter_matrix16, s->q_inter_matrix16_bias,
s->inter_matrix, s->inter_quant_bias);
s->inter_matrix, s->inter_quant_bias, 1, 31);
}
if(ff_rate_control_init(s) < 0)
@ -2462,7 +2462,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
s->intra_matrix[j] = CLAMP_TO_8BIT((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
}
convert_matrix(s, s->q_intra_matrix, s->q_intra_matrix16,
s->q_intra_matrix16_bias, s->intra_matrix, s->intra_quant_bias);
s->q_intra_matrix16_bias, s->intra_matrix, s->intra_quant_bias, 8, 8);
}
s->last_bits= get_bit_count(&s->pb);