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avcodec/mjpegenc: Move mjpeg_encode_init() down

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Will avoid a forward declaration later.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-03-04 18:42:44 +01:00
parent 5308eeae5c
commit 2f73a197a1
1 changed files with 75 additions and 74 deletions
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149
libavcodec/mjpegenc.c
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@ -304,80 +304,6 @@ static int alloc_huffman(MJPEGEncContext *const m2)
return 0;
}
static av_cold int mjpeg_encode_init(AVCodecContext *avctx)
{
MJPEGEncContext *const m2 = avctx->priv_data;
MJpegContext *const m = &m2->mjpeg;
MpegEncContext *const s = &m2->mpeg.s;
int ret;
s->mjpeg_ctx = m;
m2->mpeg.encode_picture_header = mjpeg_amv_encode_picture_header;
if (s->mpv_flags & FF_MPV_FLAG_QP_RD) {
// Used to produce garbage with MJPEG.
av_log(avctx, AV_LOG_ERROR,
"QP RD is no longer compatible with MJPEG or AMV\n");
return AVERROR(EINVAL);
}
/* The following check is automatically true for AMV,
* but it doesn't hurt either. */
ret = ff_mjpeg_encode_check_pix_fmt(avctx);
if (ret < 0)
return ret;
if (avctx->width > 65500 || avctx->height > 65500) {
av_log(avctx, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
return AVERROR(EINVAL);
}
s->min_qcoeff=-1023;
s->max_qcoeff= 1023;
// Build default Huffman tables.
// These may be overwritten later with more optimal Huffman tables, but
// they are needed at least right now for some processes like trellis.
ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
m->huff_code_dc_luminance,
ff_mjpeg_bits_dc_luminance,
ff_mjpeg_val_dc);
ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
m->huff_code_dc_chrominance,
ff_mjpeg_bits_dc_chrominance,
ff_mjpeg_val_dc);
ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
m->huff_code_ac_luminance,
ff_mjpeg_bits_ac_luminance,
ff_mjpeg_val_ac_luminance);
ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
m->huff_code_ac_chrominance,
ff_mjpeg_bits_ac_chrominance,
ff_mjpeg_val_ac_chrominance);
init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
s->intra_ac_vlc_length =
s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
s->intra_chroma_ac_vlc_length =
s->intra_chroma_ac_vlc_last_length = m->uni_chroma_ac_vlc_len;
ret = ff_mpv_encode_init(avctx);
if (ret < 0)
return ret;
// Buffers start out empty.
m->huff_ncode = 0;
if (s->slice_context_count > 1)
m->huffman = HUFFMAN_TABLE_DEFAULT;
if (m->huffman == HUFFMAN_TABLE_OPTIMAL)
return alloc_huffman(m2);
return 0;
}
static av_cold int mjpeg_encode_close(AVCodecContext *avctx)
{
MJPEGEncContext *const mjpeg = avctx->priv_data;
@ -603,6 +529,81 @@ void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64])
}
}
static av_cold int mjpeg_encode_init(AVCodecContext *avctx)
{
MJPEGEncContext *const m2 = avctx->priv_data;
MJpegContext *const m = &m2->mjpeg;
MpegEncContext *const s = &m2->mpeg.s;
int ret;
s->mjpeg_ctx = m;
m2->mpeg.encode_picture_header = mjpeg_amv_encode_picture_header;
if (s->mpv_flags & FF_MPV_FLAG_QP_RD) {
// Used to produce garbage with MJPEG.
av_log(avctx, AV_LOG_ERROR,
"QP RD is no longer compatible with MJPEG or AMV\n");
return AVERROR(EINVAL);
}
/* The following check is automatically true for AMV,
* but it doesn't hurt either. */
ret = ff_mjpeg_encode_check_pix_fmt(avctx);
if (ret < 0)
return ret;
if (avctx->width > 65500 || avctx->height > 65500) {
av_log(avctx, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
return AVERROR(EINVAL);
}
// Build default Huffman tables.
// These may be overwritten later with more optimal Huffman tables, but
// they are needed at least right now for some processes like trellis.
ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
m->huff_code_dc_luminance,
ff_mjpeg_bits_dc_luminance,
ff_mjpeg_val_dc);
ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
m->huff_code_dc_chrominance,
ff_mjpeg_bits_dc_chrominance,
ff_mjpeg_val_dc);
ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
m->huff_code_ac_luminance,
ff_mjpeg_bits_ac_luminance,
ff_mjpeg_val_ac_luminance);
ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
m->huff_code_ac_chrominance,
ff_mjpeg_bits_ac_chrominance,
ff_mjpeg_val_ac_chrominance);
init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
s->min_qcoeff = -1023;
s->max_qcoeff = 1023;
s->intra_ac_vlc_length =
s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
s->intra_chroma_ac_vlc_length =
s->intra_chroma_ac_vlc_last_length = m->uni_chroma_ac_vlc_len;
ret = ff_mpv_encode_init(avctx);
if (ret < 0)
return ret;
// Buffers start out empty.
m->huff_ncode = 0;
if (s->slice_context_count > 1)
m->huffman = HUFFMAN_TABLE_DEFAULT;
if (m->huffman == HUFFMAN_TABLE_OPTIMAL)
return alloc_huffman(m2);
return 0;
}
#if CONFIG_AMV_ENCODER
// maximum over s->mjpeg_vsample[i]
#define V_MAX 2