avcodec/mjpegenc_common: Move stuff only used by mjpegenc.c to it

This allows to make ff_init_uni_ac_vlc static;
ff_mjpeg_encode_picture_frame has also been made static, but it could
always have been made static.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

1 files changed, 0 insertions, 194 deletions

diff --git a/libavcodec/mjpegenc_common.c b/libavcodec/mjpegenc_common.c
index 720b18d448..12dd7be2e8 100644
--- a/libavcodec/mjpegenc_common.c
+++ b/libavcodec/mjpegenc_common.c
@@ -23,7 +23,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "libavutil/common.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/pixfmt.h"
 
@@ -33,35 +32,8 @@
 #include "put_bits.h"
 #include "mjpegenc.h"
 #include "mjpegenc_common.h"
-#include "mjpegenc_huffman.h"
 #include "mjpeg.h"
 
-av_cold void ff_init_uni_ac_vlc(const uint8_t huff_size_ac[256], uint8_t *uni_ac_vlc_len)
-{
-    int i;
-
-    for (i = 0; i < 128; i++) {
-        int level = i - 64;
-        int run;
-        if (!level)
-            continue;
-        for (run = 0; run < 64; run++) {
-            int len, code, nbits;
-            int alevel = FFABS(level);
-
-            len = (run >> 4) * huff_size_ac[0xf0];
-
-            nbits= av_log2_16bit(alevel) + 1;
-            code = ((15&run) << 4) | nbits;
-
-            len += huff_size_ac[code] + nbits;
-
-            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
-            // We ignore EOB as its just a constant which does not change generally
-        }
-    }
-}
-
 /* table_class: 0 = DC coef, 1 = AC coefs */
 static int put_huffman_table(PutBitContext *p, int table_class, int table_id,
                              const uint8_t *bits_table, const uint8_t *value_table)
@@ -359,54 +331,6 @@ end:
     }
 }
 
-/**
- * Encodes and outputs the entire frame in the JPEG format.
- *
- * @param s The MpegEncContext.
- */
-void ff_mjpeg_encode_picture_frame(MpegEncContext *s)
-{
-    int i, nbits, code, table_id;
-    MJpegContext *m = s->mjpeg_ctx;
-    uint8_t *huff_size[4] = {m->huff_size_dc_luminance,
-                             m->huff_size_dc_chrominance,
-                             m->huff_size_ac_luminance,
-                             m->huff_size_ac_chrominance};
-    uint16_t *huff_code[4] = {m->huff_code_dc_luminance,
-                              m->huff_code_dc_chrominance,
-                              m->huff_code_ac_luminance,
-                              m->huff_code_ac_chrominance};
-    size_t total_bits = 0;
-    size_t bytes_needed;
-
-    s->header_bits = get_bits_diff(s);
-    // Estimate the total size first
-    for (i = 0; i < m->huff_ncode; i++) {
-        table_id = m->huff_buffer[i].table_id;
-        code = m->huff_buffer[i].code;
-        nbits = code & 0xf;
-
-        total_bits += huff_size[table_id][code] + nbits;
-    }
-
-    bytes_needed = (total_bits + 7) / 8;
-    ff_mpv_reallocate_putbitbuffer(s, bytes_needed, bytes_needed);
-
-    for (i = 0; i < m->huff_ncode; i++) {
-        table_id = m->huff_buffer[i].table_id;
-        code = m->huff_buffer[i].code;
-        nbits = code & 0xf;
-
-        put_bits(&s->pb, huff_size[table_id][code], huff_code[table_id][code]);
-        if (nbits != 0) {
-            put_sbits(&s->pb, nbits, m->huff_buffer[i].mant);
-        }
-    }
-
-    m->huff_ncode = 0;
-    s->i_tex_bits = get_bits_diff(s);
-}
-
 void ff_mjpeg_escape_FF(PutBitContext *pb, int start)
 {
     int size;
@@ -487,124 +411,6 @@ void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
     }
 }
 
-/**
- * Builds all 4 optimal Huffman tables.
- *
- * Uses the data stored in the JPEG buffer to compute the tables.
- * Stores the Huffman tables in the bits_* and val_* arrays in the MJpegContext.
- *
- * @param m MJpegContext containing the JPEG buffer.
- */
-static void ff_mjpeg_build_optimal_huffman(MJpegContext *m)
-{
-    int i, table_id, code;
-
-    MJpegEncHuffmanContext dc_luminance_ctx;
-    MJpegEncHuffmanContext dc_chrominance_ctx;
-    MJpegEncHuffmanContext ac_luminance_ctx;
-    MJpegEncHuffmanContext ac_chrominance_ctx;
-    MJpegEncHuffmanContext *ctx[4] = {&dc_luminance_ctx,
-                                      &dc_chrominance_ctx,
-                                      &ac_luminance_ctx,
-                                      &ac_chrominance_ctx};
-    for (i = 0; i < 4; i++) {
-        ff_mjpeg_encode_huffman_init(ctx[i]);
-    }
-    for (i = 0; i < m->huff_ncode; i++) {
-        table_id = m->huff_buffer[i].table_id;
-        code = m->huff_buffer[i].code;
-
-        ff_mjpeg_encode_huffman_increment(ctx[table_id], code);
-    }
-
-    ff_mjpeg_encode_huffman_close(&dc_luminance_ctx,
-                                  m->bits_dc_luminance,
-                                  m->val_dc_luminance, 12);
-    ff_mjpeg_encode_huffman_close(&dc_chrominance_ctx,
-                                  m->bits_dc_chrominance,
-                                  m->val_dc_chrominance, 12);
-    ff_mjpeg_encode_huffman_close(&ac_luminance_ctx,
-                                  m->bits_ac_luminance,
-                                  m->val_ac_luminance, 256);
-    ff_mjpeg_encode_huffman_close(&ac_chrominance_ctx,
-                                  m->bits_ac_chrominance,
-                                  m->val_ac_chrominance, 256);
-
-    ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
-                                 m->huff_code_dc_luminance,
-                                 m->bits_dc_luminance,
-                                 m->val_dc_luminance);
-    ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
-                                 m->huff_code_dc_chrominance,
-                                 m->bits_dc_chrominance,
-                                 m->val_dc_chrominance);
-    ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
-                                 m->huff_code_ac_luminance,
-                                 m->bits_ac_luminance,
-                                 m->val_ac_luminance);
-    ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
-                                 m->huff_code_ac_chrominance,
-                                 m->bits_ac_chrominance,
-                                 m->val_ac_chrominance);
-}
-
-/**
- * Writes the complete JPEG frame when optimal huffman tables are enabled,
- * otherwise writes the stuffing.
- *
- * Header + values + stuffing.
- *
- * @param s The MpegEncContext.
- * @return int Error code, 0 if successful.
- */
-int ff_mjpeg_encode_stuffing(MpegEncContext *s)
-{
-    int i;
-    PutBitContext *pbc = &s->pb;
-    int mb_y = s->mb_y - !s->mb_x;
-    int ret;
-    MJpegContext *m;
-
-    m = s->mjpeg_ctx;
-
-    if (s->huffman == HUFFMAN_TABLE_OPTIMAL) {
-        ff_mjpeg_build_optimal_huffman(m);
-
-        // Replace the VLCs with the optimal ones.
-        // The default ones may be used for trellis during quantization.
-        ff_init_uni_ac_vlc(m->huff_size_ac_luminance,   m->uni_ac_vlc_len);
-        ff_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;
-
-        ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
-                                       s->pred, s->intra_matrix, s->chroma_intra_matrix);
-        ff_mjpeg_encode_picture_frame(s);
-    }
-
-    ret = ff_mpv_reallocate_putbitbuffer(s, put_bits_count(&s->pb) / 8 + 100,
-                                            put_bits_count(&s->pb) / 4 + 1000);
-
-    if (ret < 0) {
-        av_log(s->avctx, AV_LOG_ERROR, "Buffer reallocation failed\n");
-        goto fail;
-    }
-
-    ff_mjpeg_escape_FF(pbc, s->esc_pos);
-
-    if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height - 1)
-        put_marker(pbc, RST0 + (mb_y&7));
-    s->esc_pos = put_bits_count(pbc) >> 3;
-fail:
-
-    for(i=0; i<3; i++)
-        s->last_dc[i] = 128 << s->intra_dc_precision;
-
-    return ret;
-}
-
 void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits)
 {
     av_assert1((header_bits & 7) == 0);