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Code Issues Releases Activity

ljpegenc: switch to encode2().

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This commit is contained in:
Anton Khirnov 2012-02-20 13:21:58 +01:00
parent 2b83e8b700
commit 8e8124e173
1 changed files with 25 additions and 7 deletions
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32
libavcodec/ljpegenc.c
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@ -32,21 +32,37 @@
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"
static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
MpegEncContext * const s = avctx->priv_data;
MJpegContext * const m = s->mjpeg_ctx;
AVFrame *pict = data;
const int width= s->width;
const int height= s->height;
AVFrame * const p= (AVFrame*)&s->current_picture;
const int predictor= avctx->prediction_method+1;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
int ret, max_pkt_size = FF_MIN_BUFFER_SIZE;
init_put_bits(&s->pb, buf, buf_size);
if (avctx->pix_fmt == PIX_FMT_BGRA)
max_pkt_size += width * height * 3 * 4;
else {
max_pkt_size += mb_width * mb_height * 3 * 4
* s->mjpeg_hsample[0] * s->mjpeg_vsample[0];
}
if ((ret = ff_alloc_packet(pkt, max_pkt_size)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", max_pkt_size);
return ret;
}
init_put_bits(&s->pb, pkt->data, pkt->size);
*p = *pict;
p->pict_type= AV_PICTURE_TYPE_I;
@ -104,8 +120,6 @@ static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, in
}
}else{
int mb_x, mb_y, i;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
for(mb_y = 0; mb_y < mb_height; mb_y++) {
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
@ -181,7 +195,11 @@ static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, in
s->picture_number++;
flush_put_bits(&s->pb);
return put_bits_ptr(&s->pb) - s->pb.buf;
pkt->size = put_bits_ptr(&s->pb) - s->pb.buf;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
// return (put_bits_count(&f->pb)+7)/8;
}
@ -192,7 +210,7 @@ AVCodec ff_ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need t
.id = CODEC_ID_LJPEG,
.priv_data_size = sizeof(MpegEncContext),
.init = ff_MPV_encode_init,
.encode = encode_picture_lossless,
.encode2 = encode_picture_lossless,
.close = ff_MPV_encode_end,
.long_name = NULL_IF_CONFIG_SMALL("Lossless JPEG"),
};