static av_cold int ljpeg_encode_init(AVCodecContext *avctx)
{
LJpegEncContext *s = avctx->priv_data;
- int chroma_v_shift, chroma_h_shift;
if ((avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
ff_dsputil_init(&s->dsp, avctx);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
- av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift,
- &chroma_v_shift);
-
- if ( avctx->pix_fmt == AV_PIX_FMT_BGR0
- || avctx->pix_fmt == AV_PIX_FMT_BGRA
- || avctx->pix_fmt == AV_PIX_FMT_BGR24) {
- s->vsample[0] = s->hsample[0] =
- s->vsample[1] = s->hsample[1] =
- s->vsample[2] = s->hsample[2] = 1;
- } else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P || avctx->pix_fmt == AV_PIX_FMT_YUVJ444P) {
- s->vsample[0] = s->vsample[1] = s->vsample[2] = 2;
- s->hsample[0] = s->hsample[1] = s->hsample[2] = 1;
- } else {
- s->vsample[0] = 2;
- s->vsample[1] = 2 >> chroma_v_shift;
- s->vsample[2] = 2 >> chroma_v_shift;
- s->hsample[0] = 2;
- s->hsample[1] = 2 >> chroma_h_shift;
- s->hsample[2] = 2 >> chroma_h_shift;
- }
+ ff_mjpeg_init_hvsample(avctx, s->hsample, s->vsample);
ff_mjpeg_build_huffman_codes(s->huff_size_dc_luminance,
s->huff_code_dc_luminance,
}
}
-void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
- ScanTable *intra_scantable,
- uint16_t intra_matrix[64])
+void ff_mjpeg_init_hvsample(AVCodecContext *avctx, int hsample[3], int vsample[3])
{
int chroma_h_shift, chroma_v_shift;
- const int lossless = avctx->codec_id != AV_CODEC_ID_MJPEG && avctx->codec_id != AV_CODEC_ID_AMV;
- int hsample[3], vsample[3];
- int i;
av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift,
&chroma_v_shift);
hsample[1] = 2 >> chroma_h_shift;
hsample[2] = 2 >> chroma_h_shift;
}
+}
+
+void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
+ ScanTable *intra_scantable,
+ uint16_t intra_matrix[64])
+{
+ const int lossless = avctx->codec_id != AV_CODEC_ID_MJPEG && avctx->codec_id != AV_CODEC_ID_AMV;
+ int hsample[3], vsample[3];
+ int i;
+
+ ff_mjpeg_init_hvsample(avctx, hsample, vsample);
put_marker(pb, SOI);
void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits);
void ff_mjpeg_escape_FF(PutBitContext *pb, int start);
void ff_mjpeg_encode_stuffing(MpegEncContext *s);
+void ff_mjpeg_init_hvsample(AVCodecContext *avctx, int hsample[3], int vsample[3]);
void ff_mjpeg_encode_dc(PutBitContext *pb, int val,
uint8_t *huff_size, uint16_t *huff_code);
void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64]);