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avcodec/mjpegenc_common: Pass MJpegContext for writing picture header

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It is the structure that is actually used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-12-22 02:28:04 +01:00
parent 7aee9e326f
commit 8a0981d013
4 changed files with 23 additions and 21 deletions
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2
libavcodec/ljpegenc.c
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@ -238,7 +238,7 @@ static int ljpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
init_put_bits(&pb, pkt->data, pkt->size);
ff_mjpeg_encode_picture_header(avctx, &pb, &s->scantable,
ff_mjpeg_encode_picture_header(avctx, &pb, NULL, &s->scantable,
s->pred, s->matrix, s->matrix);
header_bits = put_bits_count(&pb);

5
libavcodec/mjpegenc.c
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@ -76,8 +76,9 @@ static av_cold void init_uni_ac_vlc(const uint8_t huff_size_ac[256],
static void mjpeg_encode_picture_header(MpegEncContext *s)
{
ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
0, s->intra_matrix, s->chroma_intra_matrix);
ff_mjpeg_encode_picture_header(s->avctx, &s->pb, s->mjpeg_ctx,
&s->intra_scantable, 0,
s->intra_matrix, s->chroma_intra_matrix);
s->esc_pos = put_bytes_count(&s->pb, 0);
for (int i = 1; i < s->slice_context_count; i++)

34
libavcodec/mjpegenc_common.c
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@ -56,6 +56,7 @@ static int put_huffman_table(PutBitContext *p, int table_class, int table_id,
}
static void jpeg_table_header(AVCodecContext *avctx, PutBitContext *p,
MJpegContext *m,
ScanTable *intra_scantable,
uint16_t luma_intra_matrix[64],
uint16_t chroma_intra_matrix[64],
@ -63,17 +64,12 @@ static void jpeg_table_header(AVCodecContext *avctx, PutBitContext *p,
{
int i, j, size;
uint8_t *ptr;
MpegEncContext *s = NULL;
/* Since avctx->priv_data will point to LJpegEncContext in this case */
if (avctx->codec_id != AV_CODEC_ID_LJPEG)
s = avctx->priv_data;
if (avctx->codec_id != AV_CODEC_ID_LJPEG) {
if (m) {
int matrix_count = 1 + !!memcmp(luma_intra_matrix,
chroma_intra_matrix,
sizeof(luma_intra_matrix[0]) * 64);
if (s && s->mjpeg_ctx->force_duplicated_matrix)
if (m->force_duplicated_matrix)
matrix_count = 2;
/* quant matrixes */
put_marker(p, DQT);
@ -110,16 +106,16 @@ static void jpeg_table_header(AVCodecContext *avctx, PutBitContext *p,
// Only MJPEG can have a variable Huffman variable. All other
// formats use the default Huffman table.
if (s && s->mjpeg_ctx->huffman == HUFFMAN_TABLE_OPTIMAL) {
size += put_huffman_table(p, 0, 0, s->mjpeg_ctx->bits_dc_luminance,
s->mjpeg_ctx->val_dc_luminance);
size += put_huffman_table(p, 0, 1, s->mjpeg_ctx->bits_dc_chrominance,
s->mjpeg_ctx->val_dc_chrominance);
if (m && m->huffman == HUFFMAN_TABLE_OPTIMAL) {
size += put_huffman_table(p, 0, 0, m->bits_dc_luminance,
m->val_dc_luminance);
size += put_huffman_table(p, 0, 1, m->bits_dc_chrominance,
m->val_dc_chrominance);
size += put_huffman_table(p, 1, 0, s->mjpeg_ctx->bits_ac_luminance,
s->mjpeg_ctx->val_ac_luminance);
size += put_huffman_table(p, 1, 1, s->mjpeg_ctx->bits_ac_chrominance,
s->mjpeg_ctx->val_ac_chrominance);
size += put_huffman_table(p, 1, 0, m->bits_ac_luminance,
m->val_ac_luminance);
size += put_huffman_table(p, 1, 1, m->bits_ac_chrominance,
m->val_ac_chrominance);
} else {
size += put_huffman_table(p, 0, 0, ff_mjpeg_bits_dc_luminance,
ff_mjpeg_val_dc);
@ -218,11 +214,12 @@ void ff_mjpeg_init_hvsample(AVCodecContext *avctx, int hsample[4], int vsample[4
}
void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
MJpegContext *m,
ScanTable *intra_scantable, int pred,
uint16_t luma_intra_matrix[64],
uint16_t chroma_intra_matrix[64])
{
const int lossless = avctx->codec_id != AV_CODEC_ID_MJPEG && avctx->codec_id != AV_CODEC_ID_AMV;
const int lossless = !m;
int hsample[4], vsample[4];
int components = 3 + (avctx->pix_fmt == AV_PIX_FMT_BGRA);
int chroma_matrix = !!memcmp(luma_intra_matrix,
@ -239,7 +236,8 @@ void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
jpeg_put_comments(avctx, pb);
jpeg_table_header(avctx, pb, intra_scantable, luma_intra_matrix, chroma_intra_matrix, hsample);
jpeg_table_header(avctx, pb, m, intra_scantable,
luma_intra_matrix, chroma_intra_matrix, hsample);
switch (avctx->codec_id) {
case AV_CODEC_ID_MJPEG: put_marker(pb, SOF0 ); break;

3
libavcodec/mjpegenc_common.h
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@ -27,7 +27,10 @@
#include "idctdsp.h"
#include "put_bits.h"
struct MJpegContext;
void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
struct MJpegContext *m,
ScanTable *intra_scantable, int pred,
uint16_t luma_intra_matrix[64],
uint16_t chroma_intra_matrix[64]);