#include "libavutil/frame.h"
#include "libavutil/mem.h"
+#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "idctdsp.h"
#include "internal.h"
#include "jpegtables.h"
+#include "mathops.h"
#include "mjpegenc_common.h"
#include "mjpeg.h"
#include "avcodec.h"
#include "jpegtables.h"
#include "mjpegenc_common.h"
+#include "mjpegenc_huffman.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"
#include "profiles.h"
+static av_cold void init_uni_ac_vlc(const uint8_t huff_size_ac[256],
+ uint8_t *uni_ac_vlc_len)
+{
+ for (int i = 0; i < 128; i++) {
+ int level = i - 64;
+ if (!level)
+ continue;
+ for (int 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
+ }
+ }
+}
+
+/**
+ * Encodes and outputs the entire frame in the JPEG format.
+ *
+ * @param s The MpegEncContext.
+ */
+static void mjpeg_encode_picture_frame(MpegEncContext *s)
+{
+ int 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 (int 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 (int 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);
+}
+
+/**
+ * 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 mjpeg_build_optimal_huffman(MJpegContext *m)
+{
+ 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 (int i = 0; i < 4; i++)
+ ff_mjpeg_encode_huffman_init(ctx[i]);
+
+ for (int i = 0; i < m->huff_ncode; i++) {
+ int table_id = m->huff_buffer[i].table_id;
+ int 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)
+{
+ 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) {
+ mjpeg_build_optimal_huffman(m);
+
+ // Replace the VLCs with the optimal ones.
+ // The default ones may be used for trellis during quantization.
+ 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;
+
+ ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
+ s->pred, s->intra_matrix, s->chroma_intra_matrix);
+ 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 (int i = 0; i < 3; i++)
+ s->last_dc[i] = 128 << s->intra_dc_precision;
+
+ return ret;
+}
+
static int alloc_huffman(MpegEncContext *s)
{
MJpegContext *m = s->mjpeg_ctx;
avpriv_mjpeg_bits_ac_chrominance,
avpriv_mjpeg_val_ac_chrominance);
- 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);
+ 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 =
int ff_mjpeg_encode_init(MpegEncContext *s);
void ff_mjpeg_encode_close(MpegEncContext *s);
void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64]);
+int ff_mjpeg_encode_stuffing(MpegEncContext *s);
#endif /* AVCODEC_MJPEGENC_H */
#include <stdint.h>
#include <string.h>
-#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#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)
}
}
-/**
- * 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;
}
}
-/**
- * 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);
#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 */
projects / ffmpeg / commitdiff