mirror of
https://github.com/FFmpeg/FFmpeg.git
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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>
This commit is contained in:
Andreas Rheinhardt
parent
6eae9c1d39
commit
bab6b88ebf
@ -32,12 +32,14 @@
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#include "libavutil/frame.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avcodec.h"
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#include "idctdsp.h"
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#include "internal.h"
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#include "jpegtables.h"
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#include "mathops.h"
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#include "mjpegenc_common.h"
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#include "mjpeg.h"
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@ -35,11 +35,198 @@
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#include "avcodec.h"
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#include "jpegtables.h"
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#include "mjpegenc_common.h"
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#include "mjpegenc_huffman.h"
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#include "mpegvideo.h"
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#include "mjpeg.h"
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#include "mjpegenc.h"
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#include "profiles.h"
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static av_cold void init_uni_ac_vlc(const uint8_t huff_size_ac[256],
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uint8_t *uni_ac_vlc_len)
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{
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for (int i = 0; i < 128; i++) {
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int level = i - 64;
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if (!level)
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continue;
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for (int run = 0; run < 64; run++) {
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int len, code, nbits;
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int alevel = FFABS(level);
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len = (run >> 4) * huff_size_ac[0xf0];
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nbits= av_log2_16bit(alevel) + 1;
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code = ((15&run) << 4) | nbits;
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len += huff_size_ac[code] + nbits;
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uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
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// We ignore EOB as its just a constant which does not change generally
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}
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}
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}
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/**
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* Encodes and outputs the entire frame in the JPEG format.
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*
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* @param s The MpegEncContext.
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*/
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static void mjpeg_encode_picture_frame(MpegEncContext *s)
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{
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int nbits, code, table_id;
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MJpegContext *m = s->mjpeg_ctx;
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uint8_t *huff_size[4] = { m->huff_size_dc_luminance,
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m->huff_size_dc_chrominance,
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m->huff_size_ac_luminance,
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m->huff_size_ac_chrominance };
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uint16_t *huff_code[4] = { m->huff_code_dc_luminance,
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m->huff_code_dc_chrominance,
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m->huff_code_ac_luminance,
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m->huff_code_ac_chrominance };
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size_t total_bits = 0;
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size_t bytes_needed;
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s->header_bits = get_bits_diff(s);
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// Estimate the total size first
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for (int i = 0; i < m->huff_ncode; i++) {
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table_id = m->huff_buffer[i].table_id;
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code = m->huff_buffer[i].code;
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nbits = code & 0xf;
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total_bits += huff_size[table_id][code] + nbits;
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}
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bytes_needed = (total_bits + 7) / 8;
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ff_mpv_reallocate_putbitbuffer(s, bytes_needed, bytes_needed);
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for (int i = 0; i < m->huff_ncode; i++) {
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table_id = m->huff_buffer[i].table_id;
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code = m->huff_buffer[i].code;
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nbits = code & 0xf;
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put_bits(&s->pb, huff_size[table_id][code], huff_code[table_id][code]);
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if (nbits != 0) {
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put_sbits(&s->pb, nbits, m->huff_buffer[i].mant);
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}
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}
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m->huff_ncode = 0;
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s->i_tex_bits = get_bits_diff(s);
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}
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/**
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* Builds all 4 optimal Huffman tables.
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*
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* Uses the data stored in the JPEG buffer to compute the tables.
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* Stores the Huffman tables in the bits_* and val_* arrays in the MJpegContext.
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*
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* @param m MJpegContext containing the JPEG buffer.
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*/
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static void mjpeg_build_optimal_huffman(MJpegContext *m)
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{
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MJpegEncHuffmanContext dc_luminance_ctx;
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MJpegEncHuffmanContext dc_chrominance_ctx;
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MJpegEncHuffmanContext ac_luminance_ctx;
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MJpegEncHuffmanContext ac_chrominance_ctx;
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MJpegEncHuffmanContext *ctx[4] = { &dc_luminance_ctx,
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&dc_chrominance_ctx,
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&ac_luminance_ctx,
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&ac_chrominance_ctx };
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for (int i = 0; i < 4; i++)
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ff_mjpeg_encode_huffman_init(ctx[i]);
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for (int i = 0; i < m->huff_ncode; i++) {
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int table_id = m->huff_buffer[i].table_id;
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int code = m->huff_buffer[i].code;
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ff_mjpeg_encode_huffman_increment(ctx[table_id], code);
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}
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ff_mjpeg_encode_huffman_close(&dc_luminance_ctx,
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m->bits_dc_luminance,
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m->val_dc_luminance, 12);
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ff_mjpeg_encode_huffman_close(&dc_chrominance_ctx,
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m->bits_dc_chrominance,
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m->val_dc_chrominance, 12);
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ff_mjpeg_encode_huffman_close(&ac_luminance_ctx,
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m->bits_ac_luminance,
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m->val_ac_luminance, 256);
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ff_mjpeg_encode_huffman_close(&ac_chrominance_ctx,
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m->bits_ac_chrominance,
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m->val_ac_chrominance, 256);
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ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
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m->huff_code_dc_luminance,
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m->bits_dc_luminance,
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m->val_dc_luminance);
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ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
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m->huff_code_dc_chrominance,
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m->bits_dc_chrominance,
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m->val_dc_chrominance);
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ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
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m->huff_code_ac_luminance,
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m->bits_ac_luminance,
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m->val_ac_luminance);
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ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
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m->huff_code_ac_chrominance,
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m->bits_ac_chrominance,
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m->val_ac_chrominance);
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}
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/**
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* Writes the complete JPEG frame when optimal huffman tables are enabled,
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* otherwise writes the stuffing.
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*
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* Header + values + stuffing.
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*
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* @param s The MpegEncContext.
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* @return int Error code, 0 if successful.
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*/
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int ff_mjpeg_encode_stuffing(MpegEncContext *s)
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{
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PutBitContext *pbc = &s->pb;
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int mb_y = s->mb_y - !s->mb_x;
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int ret;
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MJpegContext *m;
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m = s->mjpeg_ctx;
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if (s->huffman == HUFFMAN_TABLE_OPTIMAL) {
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mjpeg_build_optimal_huffman(m);
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// Replace the VLCs with the optimal ones.
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// The default ones may be used for trellis during quantization.
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init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
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init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
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s->intra_ac_vlc_length =
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s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
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s->intra_chroma_ac_vlc_length =
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s->intra_chroma_ac_vlc_last_length = m->uni_chroma_ac_vlc_len;
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ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
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s->pred, s->intra_matrix, s->chroma_intra_matrix);
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mjpeg_encode_picture_frame(s);
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}
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ret = ff_mpv_reallocate_putbitbuffer(s, put_bits_count(&s->pb) / 8 + 100,
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put_bits_count(&s->pb) / 4 + 1000);
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if (ret < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "Buffer reallocation failed\n");
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goto fail;
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}
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ff_mjpeg_escape_FF(pbc, s->esc_pos);
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if ((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height - 1)
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put_marker(pbc, RST0 + (mb_y&7));
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s->esc_pos = put_bits_count(pbc) >> 3;
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fail:
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for (int i = 0; i < 3; i++)
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s->last_dc[i] = 128 << s->intra_dc_precision;
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return ret;
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}
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static int alloc_huffman(MpegEncContext *s)
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{
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MJpegContext *m = s->mjpeg_ctx;
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@ -106,8 +293,8 @@ av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
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avpriv_mjpeg_bits_ac_chrominance,
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avpriv_mjpeg_val_ac_chrominance);
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ff_init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
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ff_init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
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init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
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init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
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s->intra_ac_vlc_length =
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s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
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s->intra_chroma_ac_vlc_length =
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@ -107,5 +107,6 @@ static inline void put_marker(PutBitContext *p, enum JpegMarker code)
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int ff_mjpeg_encode_init(MpegEncContext *s);
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void ff_mjpeg_encode_close(MpegEncContext *s);
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void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64]);
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int ff_mjpeg_encode_stuffing(MpegEncContext *s);
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#endif /* AVCODEC_MJPEGENC_H */
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@ -23,7 +23,6 @@
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#include <stdint.h>
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#include <string.h>
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#include "libavutil/common.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/pixfmt.h"
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@ -33,35 +32,8 @@
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#include "put_bits.h"
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#include "mjpegenc.h"
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#include "mjpegenc_common.h"
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#include "mjpegenc_huffman.h"
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#include "mjpeg.h"
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av_cold void ff_init_uni_ac_vlc(const uint8_t huff_size_ac[256], uint8_t *uni_ac_vlc_len)
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{
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int i;
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for (i = 0; i < 128; i++) {
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int level = i - 64;
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int run;
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if (!level)
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continue;
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for (run = 0; run < 64; run++) {
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int len, code, nbits;
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int alevel = FFABS(level);
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len = (run >> 4) * huff_size_ac[0xf0];
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nbits= av_log2_16bit(alevel) + 1;
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code = ((15&run) << 4) | nbits;
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len += huff_size_ac[code] + nbits;
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uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
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// We ignore EOB as its just a constant which does not change generally
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}
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}
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}
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/* table_class: 0 = DC coef, 1 = AC coefs */
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static int put_huffman_table(PutBitContext *p, int table_class, int table_id,
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const uint8_t *bits_table, const uint8_t *value_table)
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@ -359,54 +331,6 @@ end:
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}
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}
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/**
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* Encodes and outputs the entire frame in the JPEG format.
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*
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* @param s The MpegEncContext.
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*/
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void ff_mjpeg_encode_picture_frame(MpegEncContext *s)
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{
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int i, nbits, code, table_id;
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MJpegContext *m = s->mjpeg_ctx;
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uint8_t *huff_size[4] = {m->huff_size_dc_luminance,
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m->huff_size_dc_chrominance,
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m->huff_size_ac_luminance,
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m->huff_size_ac_chrominance};
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uint16_t *huff_code[4] = {m->huff_code_dc_luminance,
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m->huff_code_dc_chrominance,
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m->huff_code_ac_luminance,
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m->huff_code_ac_chrominance};
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size_t total_bits = 0;
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size_t bytes_needed;
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s->header_bits = get_bits_diff(s);
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// Estimate the total size first
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for (i = 0; i < m->huff_ncode; i++) {
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table_id = m->huff_buffer[i].table_id;
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code = m->huff_buffer[i].code;
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nbits = code & 0xf;
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total_bits += huff_size[table_id][code] + nbits;
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}
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bytes_needed = (total_bits + 7) / 8;
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ff_mpv_reallocate_putbitbuffer(s, bytes_needed, bytes_needed);
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for (i = 0; i < m->huff_ncode; i++) {
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table_id = m->huff_buffer[i].table_id;
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code = m->huff_buffer[i].code;
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nbits = code & 0xf;
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put_bits(&s->pb, huff_size[table_id][code], huff_code[table_id][code]);
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if (nbits != 0) {
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put_sbits(&s->pb, nbits, m->huff_buffer[i].mant);
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}
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}
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m->huff_ncode = 0;
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s->i_tex_bits = get_bits_diff(s);
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}
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void ff_mjpeg_escape_FF(PutBitContext *pb, int start)
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{
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int size;
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@ -487,124 +411,6 @@ void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
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}
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}
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/**
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* Builds all 4 optimal Huffman tables.
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*
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* Uses the data stored in the JPEG buffer to compute the tables.
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* Stores the Huffman tables in the bits_* and val_* arrays in the MJpegContext.
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*
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* @param m MJpegContext containing the JPEG buffer.
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*/
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static void ff_mjpeg_build_optimal_huffman(MJpegContext *m)
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{
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int i, table_id, code;
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MJpegEncHuffmanContext dc_luminance_ctx;
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MJpegEncHuffmanContext dc_chrominance_ctx;
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MJpegEncHuffmanContext ac_luminance_ctx;
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MJpegEncHuffmanContext ac_chrominance_ctx;
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MJpegEncHuffmanContext *ctx[4] = {&dc_luminance_ctx,
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&dc_chrominance_ctx,
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&ac_luminance_ctx,
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&ac_chrominance_ctx};
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for (i = 0; i < 4; i++) {
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ff_mjpeg_encode_huffman_init(ctx[i]);
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}
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for (i = 0; i < m->huff_ncode; i++) {
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table_id = m->huff_buffer[i].table_id;
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code = m->huff_buffer[i].code;
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ff_mjpeg_encode_huffman_increment(ctx[table_id], code);
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}
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ff_mjpeg_encode_huffman_close(&dc_luminance_ctx,
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m->bits_dc_luminance,
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m->val_dc_luminance, 12);
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ff_mjpeg_encode_huffman_close(&dc_chrominance_ctx,
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m->bits_dc_chrominance,
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m->val_dc_chrominance, 12);
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ff_mjpeg_encode_huffman_close(&ac_luminance_ctx,
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m->bits_ac_luminance,
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m->val_ac_luminance, 256);
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ff_mjpeg_encode_huffman_close(&ac_chrominance_ctx,
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m->bits_ac_chrominance,
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m->val_ac_chrominance, 256);
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ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
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m->huff_code_dc_luminance,
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m->bits_dc_luminance,
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m->val_dc_luminance);
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ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
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m->huff_code_dc_chrominance,
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m->bits_dc_chrominance,
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m->val_dc_chrominance);
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ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
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m->huff_code_ac_luminance,
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m->bits_ac_luminance,
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m->val_ac_luminance);
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ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
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m->huff_code_ac_chrominance,
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m->bits_ac_chrominance,
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m->val_ac_chrominance);
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}
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/**
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* Writes the complete JPEG frame when optimal huffman tables are enabled,
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* otherwise writes the stuffing.
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*
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* Header + values + stuffing.
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*
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* @param s The MpegEncContext.
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* @return int Error code, 0 if successful.
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*/
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int ff_mjpeg_encode_stuffing(MpegEncContext *s)
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{
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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);
|
||||
|
||||
@ -25,25 +25,20 @@
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "idctdsp.h"
|
||||
#include "mpegvideo.h"
|
||||
#include "put_bits.h"
|
||||
|
||||
void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
|
||||
ScanTable *intra_scantable, int pred,
|
||||
uint16_t luma_intra_matrix[64],
|
||||
uint16_t chroma_intra_matrix[64]);
|
||||
void ff_mjpeg_encode_picture_frame(MpegEncContext *s);
|
||||
void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits);
|
||||
void ff_mjpeg_escape_FF(PutBitContext *pb, int start);
|
||||
void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
|
||||
const uint8_t *bits_table,
|
||||
const uint8_t *val_table);
|
||||
int ff_mjpeg_encode_stuffing(MpegEncContext *s);
|
||||
void ff_mjpeg_init_hvsample(AVCodecContext *avctx, int hsample[4], int vsample[4]);
|
||||
|
||||
void ff_mjpeg_encode_dc(PutBitContext *pb, int val,
|
||||
uint8_t *huff_size, uint16_t *huff_code);
|
||||
|
||||
av_cold void ff_init_uni_ac_vlc(const uint8_t huff_size_ac[256], uint8_t *uni_ac_vlc_len);
|
||||
|
||||
#endif /* AVCODEC_MJPEGENC_COMMON_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user