#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
+ }
+ }
+}
+
+#if CONFIG_MJPEG_ENCODER
+/**
+ * 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);
+}
+#endif
+
+/**
+ * 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;
+
+#if CONFIG_MJPEG_ENCODER
+ if (s->huffman == HUFFMAN_TABLE_OPTIMAL) {
+ MJpegContext *m = s->mjpeg_ctx;
+
+ 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);
+ }
+#endif
+
+ 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_bytes_count(pbc, 0);
+
+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)
{
av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
{
MJpegContext *m;
+ int ret;
av_assert0(s->slice_context_count == 1);
+ /* The following check is automatically true for AMV,
+ * but it doesn't hurt either. */
+ ret = ff_mjpeg_encode_check_pix_fmt(s->avctx);
+ if (ret < 0)
+ return ret;
+
if (s->width > 65500 || s->height > 65500) {
av_log(s, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
return AVERROR(EINVAL);
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 =
av_cold void ff_mjpeg_encode_close(MpegEncContext *s)
{
- av_freep(&s->mjpeg_ctx->huff_buffer);
- av_freep(&s->mjpeg_ctx);
+ if (s->mjpeg_ctx) {
+ av_freep(&s->mjpeg_ctx->huff_buffer);
+ av_freep(&s->mjpeg_ctx);
+ }
}
/**
{ "huffman", "Huffman table strategy", OFFSET(huffman), AV_OPT_TYPE_INT, { .i64 = HUFFMAN_TABLE_OPTIMAL }, 0, NB_HUFFMAN_TABLE_OPTION - 1, VE, "huffman" },
{ "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = HUFFMAN_TABLE_DEFAULT }, INT_MIN, INT_MAX, VE, "huffman" },
{ "optimal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = HUFFMAN_TABLE_OPTIMAL }, INT_MIN, INT_MAX, VE, "huffman" },
+{ "force_duplicated_matrix", "Always write luma and chroma matrix for mjpeg, useful for rtp streaming.", OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, VE },
+#if FF_API_MPEGVIDEO_OPTS
+FF_MPV_DEPRECATED_MPEG_QUANT_OPT
+FF_MPV_DEPRECATED_A53_CC_OPT
+FF_MPV_DEPRECATED_BFRAME_OPTS
+#endif
{ NULL},
};
.version = LIBAVUTIL_VERSION_INT,
};
-AVCodec ff_mjpeg_encoder = {
+const AVCodec ff_mjpeg_encoder = {
.name = "mjpeg",
.long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
.type = AVMEDIA_TYPE_VIDEO,
.init = ff_mpv_encode_init,
.encode2 = ff_mpv_encode_picture,
.close = ff_mpv_encode_end,
- .capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
+ .capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
.pix_fmts = (const enum AVPixelFormat[]) {
- AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_NONE
},
.priv_class = &mjpeg_class,
+ .profiles = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
};
#endif
.version = LIBAVUTIL_VERSION_INT,
};
-AVCodec ff_amv_encoder = {
+const AVCodec ff_amv_encoder = {
.name = "amv",
.long_name = NULL_IF_CONFIG_SMALL("AMV Video"),
.type = AVMEDIA_TYPE_VIDEO,
.init = ff_mpv_encode_init,
.encode2 = amv_encode_picture,
.close = ff_mpv_encode_end,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_NONE
},
projects / ffmpeg / blobdiff