Apple ProRes encoder

Signed-off-by: Anatoliy Wasserman <anatoliy.wasserman@yandex.ru>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 610 insertions, 0 deletions

diff --git a/libavcodec/proresenc.c b/libavcodec/proresenc.c
new file mode 100644
index 0000000000..bd84d2bc9b
--- /dev/null
+++ b/libavcodec/proresenc.c
@@ -0,0 +1,610 @@
+/*
+ * Apple ProRes encoder
+ *
+ * Copyright (c) 2011 Anatoliy Wasserman
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file libavcodec/proresenc.c
+ * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy)
+ */
+
+#include "avcodec.h"
+#include "put_bits.h"
+#include "dsputil.h"
+
+#define DEFAULT_SLICE_MB_WIDTH 8
+
+#define FF_PROFILE_PRORES_PROXY     0
+#define FF_PROFILE_PRORES_LT        1
+#define FF_PROFILE_PRORES_STANDARD  2
+#define FF_PROFILE_PRORES_HQ        3
+
+static const AVProfile profiles[] = {
+    { FF_PROFILE_PRORES_PROXY,    "apco"},
+    { FF_PROFILE_PRORES_LT,       "apcs"},
+    { FF_PROFILE_PRORES_STANDARD, "apcn"},
+    { FF_PROFILE_PRORES_HQ,       "apch"},
+    { FF_PROFILE_UNKNOWN }
+};
+
+static const int qp_start_table[4] = { 4, 1, 1, 1 };
+static const int qp_end_table[4]   = { 8, 9, 6, 6 };
+static const int bitrate_table[5]  = { 1000, 2100, 3500, 5400 };
+
+static const uint8_t progressive_scan[64] = {
+     0,  1,  8,  9,  2,  3, 10, 11,
+    16, 17, 24, 25, 18, 19, 26, 27,
+     4,  5, 12, 20, 13,  6,  7, 14,
+    21, 28, 29, 22, 15, 23, 30, 31,
+    32, 33, 40, 48, 41, 34, 35, 42,
+    49, 56, 57, 50, 43, 36, 37, 44,
+    51, 58, 59, 52, 45, 38, 39, 46,
+    53, 60, 61, 54, 47, 55, 62, 63
+};
+
+static const uint8_t QMAT_LUMA[4][64] = {
+    {
+         4,  7,  9, 11, 13, 14, 15, 63,
+         7,  7, 11, 12, 14, 15, 63, 63,
+         9, 11, 13, 14, 15, 63, 63, 63,
+        11, 11, 13, 14, 63, 63, 63, 63,
+        11, 13, 14, 63, 63, 63, 63, 63,
+        13, 14, 63, 63, 63, 63, 63, 63,
+        13, 63, 63, 63, 63, 63, 63, 63,
+        63, 63, 63, 63, 63, 63, 63, 63
+    }, {
+         4,  5,  6,  7,  9, 11, 13, 15,
+         5,  5,  7,  8, 11, 13, 15, 17,
+         6,  7,  9, 11, 13, 15, 15, 17,
+         7,  7,  9, 11, 13, 15, 17, 19,
+         7,  9, 11, 13, 14, 16, 19, 23,
+         9, 11, 13, 14, 16, 19, 23, 29,
+         9, 11, 13, 15, 17, 21, 28, 35,
+        11, 13, 16, 17, 21, 28, 35, 41
+    }, {
+         4,  4,  5,  5,  6,  7,  7,  9,
+         4,  4,  5,  6,  7,  7,  9,  9,
+         5,  5,  6,  7,  7,  9,  9, 10,
+         5,  5,  6,  7,  7,  9,  9, 10,
+         5,  6,  7,  7,  8,  9, 10, 12,
+         6,  7,  7,  8,  9, 10, 12, 15,
+         6,  7,  7,  9, 10, 11, 14, 17,
+         7,  7,  9, 10, 11, 14, 17, 21
+    }, {
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  5,
+         4,  4,  4,  4,  4,  4,  5,  5,
+         4,  4,  4,  4,  4,  5,  5,  6,
+         4,  4,  4,  4,  5,  5,  6,  7,
+         4,  4,  4,  4,  5,  6,  7,  7
+    }
+};
+
+static const uint8_t QMAT_CHROMA[4][64] = {
+    {
+         4,  7,  9, 11, 13, 14, 63, 63,
+         7,  7, 11, 12, 14, 63, 63, 63,
+         9, 11, 13, 14, 63, 63, 63, 63,
+        11, 11, 13, 14, 63, 63, 63, 63,
+        11, 13, 14, 63, 63, 63, 63, 63,
+        13, 14, 63, 63, 63, 63, 63, 63,
+        13, 63, 63, 63, 63, 63, 63, 63,
+        63, 63, 63, 63, 63, 63, 63, 63
+    }, {
+         4,  5,  6,  7,  9, 11, 13, 15,
+         5,  5,  7,  8, 11, 13, 15, 17,
+         6,  7,  9, 11, 13, 15, 15, 17,
+         7,  7,  9, 11, 13, 15, 17, 19,
+         7,  9, 11, 13, 14, 16, 19, 23,
+         9, 11, 13, 14, 16, 19, 23, 29,
+         9, 11, 13, 15, 17, 21, 28, 35,
+        11, 13, 16, 17, 21, 28, 35, 41
+    }, {
+         4,  4,  5,  5,  6,  7,  7,  9,
+         4,  4,  5,  6,  7,  7,  9,  9,
+         5,  5,  6,  7,  7,  9,  9, 10,
+         5,  5,  6,  7,  7,  9,  9, 10,
+         5,  6,  7,  7,  8,  9, 10, 12,
+         6,  7,  7,  8,  9, 10, 12, 15,
+         6,  7,  7,  9, 10, 11, 14, 17,
+         7,  7,  9, 10, 11, 14, 17, 21
+    }, {
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  4,
+         4,  4,  4,  4,  4,  4,  4,  5,
+         4,  4,  4,  4,  4,  4,  5,  5,
+         4,  4,  4,  4,  4,  5,  5,  6,
+         4,  4,  4,  4,  5,  5,  6,  7,
+         4,  4,  4,  4,  5,  6,  7,  7
+    }
+};
+
+
+typedef struct {
+    uint8_t* fill_y;
+    uint8_t* fill_u;
+    uint8_t* fill_v;
+
+    int qmat_luma[16][64];
+    int qmat_chroma[16][64];
+} ProresContext;
+
+static void encode_codeword(PutBitContext *pb, int val, int codebook)
+{
+    unsigned int rice_order, exp_order, switch_bits, first_exp, exp, zeros,
+            mask;
+
+    /* number of bits to switch between rice and exp golomb */
+    switch_bits = codebook & 3;
+    rice_order  = codebook >> 5;
+    exp_order   = (codebook >> 2) & 7;
+
+    first_exp = ((switch_bits + 1) << rice_order);
+
+    if (val >= first_exp) { /* exp golomb */
+        val -= first_exp;
+        val += (1 << exp_order);
+        exp = av_log2(val);
+        zeros = exp - exp_order + switch_bits + 1;
+        put_bits(pb, zeros, 0);
+        put_bits(pb, 1, 1);
+        put_bits(pb, exp, val);
+    } else if (rice_order) {
+        mask = (1 << rice_order) - 1;
+        put_bits(pb, (val >> rice_order), 0);
+        put_bits(pb, 1, 1);
+        put_bits(pb, rice_order, val & mask);
+    } else {
+        put_bits(pb, val, 0);
+        put_bits(pb, 1, 1);
+    }
+}
+
+#define QSCALE(qmat,ind,val) ((val) / (qmat[ind]))
+#define TO_GOLOMB(val) ((val << 1) ^ (val >> 31))
+#define DIFF_SIGN(val, sign) ((val >> 31) ^ sign)
+#define IS_NEGATIVE(val) (((val >> 31) ^ -1) + 1)
+#define TO_GOLOMB2(val,sign) (val==0 ? 0 : (val << 1) + sign)
+
+static av_always_inline int get_level(int val)
+{
+    int sign = (val >> 31);
+    return (val ^ sign) - sign;
+}
+
+#define FIRST_DC_CB 0xB8
+
+static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
+
+static void encode_dc_coeffs(PutBitContext *pb, DCTELEM *in,
+        int blocks_per_slice, int *qmat)
+{
+    int prev_dc, code;
+    int i, sign, idx;
+    int new_dc, delta, diff_sign, new_code;
+
+    prev_dc = QSCALE(qmat, 0, in[0] - 16384);
+    code = TO_GOLOMB(prev_dc);
+    encode_codeword(pb, code, FIRST_DC_CB);
+
+    code = 5; sign = 0; idx = 64;
+    for (i = 1; i < blocks_per_slice; i++, idx += 64) {
+        new_dc    = QSCALE(qmat, 0, in[idx] - 16384);
+        delta     = new_dc - prev_dc;
+        diff_sign = DIFF_SIGN(delta, sign);
+        new_code  = TO_GOLOMB2(get_level(delta), diff_sign);
+
+        encode_codeword(pb, new_code, dc_codebook[FFMIN(code, 6)]);
+
+        code      = new_code;
+        sign      = delta >> 31;
+        prev_dc   = new_dc;
+    }
+}
+
+static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29,
+        0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
+static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28,
+        0x28, 0x28, 0x28, 0x4C };
+
+static void encode_ac_coeffs(AVCodecContext *avctx, PutBitContext *pb,
+        DCTELEM *in, int blocks_per_slice, int *qmat)
+{
+    int prev_run = 4;
+    int prev_level = 2;
+
+    int run = 0, level, code;
+    for (int i = 1; i < 64; i++) {
+        int indp = progressive_scan[i];
+        for (int j = 0; j < blocks_per_slice; j++) {
+            int val = QSCALE(qmat, indp, in[(j << 6) + indp]);
+            if (val) {
+                encode_codeword(pb, run, run_to_cb[FFMIN(prev_run, 15)]);
+
+                prev_run   = run;
+                run        = 0;
+                level      = get_level(val);
+                code       = level - 1;
+
+                encode_codeword(pb, code, lev_to_cb[FFMIN(prev_level, 9)]);
+
+                prev_level = level;
+
+                put_bits(pb, 1, IS_NEGATIVE(val));
+            } else {
+                ++run;
+            }
+        }
+    }
+}
+
+static void get(uint8_t *pixels, int stride, DCTELEM* block)
+{
+    int16_t *p = (int16_t*)pixels;
+    int i, j;
+
+    stride >>= 1;
+    for (i = 0; i < 8; i++) {
+        for (j = 0; j < 8; j++) {
+            block[j] = p[j];
+        }
+        p += stride;
+        block += 8;
+    }
+}
+
+static void fdct_get(uint8_t *pixels, int stride, DCTELEM* block)
+{
+    get(pixels, stride, block);
+    ff_jpeg_fdct_islow_10(block);
+}
+
+static int encode_slice_plane(AVCodecContext *avctx, int mb_count,
+        uint8_t *src, int src_stride, uint8_t *buf, unsigned buf_size,
+        int *qmat, int chroma)
+{
+    DECLARE_ALIGNED(16, DCTELEM, blocks)[DEFAULT_SLICE_MB_WIDTH << 8], *block;
+    int i, blocks_per_slice;
+    PutBitContext pb;
+
+    block = blocks;
+    for (i = 0; i < mb_count; i++) {
+        fdct_get(src,                  src_stride, block + (0 << 6));
+        fdct_get(src + 8 * src_stride, src_stride, block + ((2 - chroma) << 6));
+        if (!chroma) {
+            fdct_get(src + 16,                  src_stride, block + (1 << 6));
+            fdct_get(src + 16 + 8 * src_stride, src_stride, block + (3 << 6));
+        }
+
+        block += (256 >> chroma);
+        src   += (32  >> chroma);
+    }
+
+    blocks_per_slice = mb_count << (2 - chroma);
+    init_put_bits(&pb, buf, buf_size << 3);
+
+    encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat);
+    encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat);
+
+    flush_put_bits(&pb);
+    return put_bits_ptr(&pb) - pb.buf;
+}
+
+static av_always_inline unsigned encode_slice_data(AVCodecContext *avctx,
+        uint8_t *dest_y, uint8_t *dest_u, uint8_t *dest_v, int luma_stride,
+        int chroma_stride, unsigned mb_count, uint8_t *buf, unsigned data_size,
+        unsigned* y_data_size, unsigned* u_data_size, unsigned* v_data_size,
+        int qp)
+{
+    ProresContext* ctx = (ProresContext*) avctx->priv_data;
+
+    *y_data_size = encode_slice_plane(avctx, mb_count, dest_y, luma_stride,
+            buf, data_size, ctx->qmat_luma[qp - 1], 0);
+
+    if (!(avctx->flags & CODEC_FLAG_GRAY)) {
+        *u_data_size = encode_slice_plane(avctx, mb_count, dest_u,
+                chroma_stride, buf + *y_data_size, data_size - *y_data_size,
+                ctx->qmat_chroma[qp - 1], 1);
+
+        *v_data_size = encode_slice_plane(avctx, mb_count, dest_v,
+                chroma_stride, buf + *y_data_size + *u_data_size,
+                data_size - *y_data_size - *u_data_size,
+                ctx->qmat_chroma[qp - 1], 1);
+    }
+
+    return *y_data_size + *u_data_size + *v_data_size;
+}
+
+static void subimage_with_fill(uint16_t *src, unsigned x, unsigned y,
+        unsigned stride, unsigned width, unsigned height, uint16_t *dst,
+        unsigned dst_width, unsigned dst_height)
+{
+
+    int box_width = FFMIN(width - x, dst_width);
+    int box_height = FFMIN(height - y, dst_height);
+    int i, j, src_stride = stride >> 1;
+    uint16_t last_pix, *last_line;
+
+    src += y * src_stride + x;
+    for (i = 0; i < box_height; ++i) {
+        for (j = 0; j < box_width; ++j) {
+            dst[j] = src[j];
+        }
+        last_pix = dst[j - 1];
+        for (; j < dst_width; j++)
+            dst[j] = last_pix;
+        src += src_stride;
+        dst += dst_width;
+    }
+    last_line = dst - dst_width;
+    for (; i < dst_height; i++) {
+        for (j = 0; j < dst_width; ++j) {
+            dst[j] = last_line[j];
+        }
+        dst += dst_width;
+    }
+}
+
+static int encode_slice(AVCodecContext *avctx, AVFrame *pic, int mb_x,
+        int mb_y, unsigned mb_count, uint8_t *buf, unsigned data_size,
+        int unsafe, int *qp)
+{
+    int luma_stride, chroma_stride;
+    int hdr_size = 6, slice_size;
+    uint8_t *dest_y, *dest_u, *dest_v;
+    unsigned y_data_size = 0, u_data_size = 0, v_data_size = 0;
+    ProresContext* ctx = (ProresContext*)avctx->priv_data;
+    int tgt_bits   = (mb_count * bitrate_table[avctx->profile]) >> 2;
+    int low_bytes  = (tgt_bits - (tgt_bits >> 3)) >> 3; // 12% bitrate fluctuation
+    int high_bytes = (tgt_bits + (tgt_bits >> 3)) >> 3;
+
+    luma_stride   = pic->linesize[0];
+    chroma_stride = pic->linesize[1];
+
+    dest_y = pic->data[0] + (mb_y << 4) * luma_stride   + (mb_x << 5);
+    dest_u = pic->data[1] + (mb_y << 4) * chroma_stride + (mb_x << 4);
+    dest_v = pic->data[2] + (mb_y << 4) * chroma_stride + (mb_x << 4);
+
+    if (unsafe) {
+
+        subimage_with_fill((uint16_t *) pic->data[0], mb_x << 4, mb_y << 4,
+                luma_stride, avctx->width, avctx->height,
+                (uint16_t *) ctx->fill_y, mb_count << 4, 16);
+        subimage_with_fill((uint16_t *) pic->data[1], mb_x << 3, mb_y << 4,
+                chroma_stride, avctx->width >> 1, avctx->height,
+                (uint16_t *) ctx->fill_u, mb_count << 3, 16);
+        subimage_with_fill((uint16_t *) pic->data[2], mb_x << 3, mb_y << 4,
+                chroma_stride, avctx->width >> 1, avctx->height,
+                (uint16_t *) ctx->fill_v, mb_count << 3, 16);
+
+        encode_slice_data(avctx, ctx->fill_y, ctx->fill_u, ctx->fill_v,
+                mb_count << 5, mb_count << 4, mb_count, buf + hdr_size,
+                data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size,
+                *qp);
+    } else {
+        slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
+                luma_stride, chroma_stride, mb_count, buf + hdr_size,
+                data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size,
+                *qp);
+
+        if (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]) {
+            do {
+                *qp += 1;
+                slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
+                        luma_stride, chroma_stride, mb_count, buf + hdr_size,
+                        data_size - hdr_size, &y_data_size, &u_data_size,
+                        &v_data_size, *qp);
+            } while (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]);
+        } else if (slice_size < low_bytes && *qp
+                > qp_start_table[avctx->profile]) {
+            do {
+                *qp -= 1;
+                slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
+                        luma_stride, chroma_stride, mb_count, buf + hdr_size,
+                        data_size - hdr_size, &y_data_size, &u_data_size,
+                        &v_data_size, *qp);
+            } while (slice_size < low_bytes && *qp > qp_start_table[avctx->profile]);
+        }
+    }
+
+    buf[0] = hdr_size << 3;
+    buf[1] = *qp;
+    AV_WB16(buf + 2, y_data_size);
+    AV_WB16(buf + 4, u_data_size);
+
+    return hdr_size + y_data_size + u_data_size + v_data_size;
+}
+
+static int prores_encode_picture(AVCodecContext *avctx, AVFrame *pic,
+        uint8_t *buf, const int buf_size)
+{
+    int mb_width = (avctx->width + 15) >> 4;
+    int mb_height = (avctx->height + 15) >> 4;
+    int hdr_size, sl_size, *slice_sizes;
+    int sl, mb_y, sl_data_size, qp;
+    int unsafe_bot, unsafe_right;
+    uint8_t *sl_data;
+    int slice_per_line = 0, rem = mb_width;
+
+    for (int i = av_log2(DEFAULT_SLICE_MB_WIDTH); i >= 0; --i) {
+        slice_per_line += rem >> i;
+        rem &= (1 << i) - 1;
+    }
+
+    qp = qp_start_table[avctx->profile];
+    slice_sizes = av_malloc(slice_per_line * mb_height * sizeof(int));
+    sl = 0; hdr_size = 8; sl_data_size = buf_size - hdr_size;
+    sl_data = buf + hdr_size + (slice_per_line * mb_height * 2);
+    for (mb_y = 0; mb_y < mb_height; mb_y++) {
+        int mb_x = 0;
+        int slice_mb_count = DEFAULT_SLICE_MB_WIDTH;
+        while (mb_x < mb_width) {
+            while (mb_width - mb_x < slice_mb_count)
+                slice_mb_count >>= 1;
+
+            unsafe_bot = (avctx->height & 0xf) && (mb_y == mb_height - 1);
+            unsafe_right = (avctx->width & 0xf) && (mb_x + slice_mb_count == mb_width);
+
+            sl_size = encode_slice(avctx, pic, mb_x, mb_y, slice_mb_count,
+                    sl_data, sl_data_size, unsafe_bot || unsafe_right, &qp);
+
+            slice_sizes[sl++]  = sl_size;
+            sl_data           += sl_size;
+            sl_data_size      -= sl_size;
+            mb_x              += slice_mb_count;
+        }
+    }
+
+    buf[0] = hdr_size << 3;
+    AV_WB32(buf + 1, sl_data - buf);
+    AV_WB16(buf + 5, slice_per_line * mb_height);
+    buf[7] = av_log2(DEFAULT_SLICE_MB_WIDTH) << 4;
+
+    for (int i = 0; i < slice_per_line * mb_height; i++)
+        AV_WB16(buf + hdr_size + (i << 1), slice_sizes[i]);
+
+    av_free(slice_sizes);
+
+    return sl_data - buf;
+}
+
+static int prores_encode_frame(AVCodecContext *avctx, unsigned char *buf,
+        int buf_size, void *data)
+{
+    AVFrame *pic = data;
+
+    int header_size = 148;
+    int pic_size = prores_encode_picture(avctx, pic, buf + header_size + 8,
+            buf_size - header_size - 8);
+
+    AV_WB32(buf, pic_size + 8 + header_size);
+    AV_WB8 (buf + 4, 'i');
+    AV_WB8 (buf + 5, 'c');
+    AV_WB8 (buf + 6, 'p');
+    AV_WB8 (buf + 7, 'f');
+
+    AV_WB16(buf + 8, header_size);
+    AV_WB16(buf + 10, 0);
+    AV_WB8 (buf + 12, 'f');
+    AV_WB8 (buf + 13, 'm');
+    AV_WB8 (buf + 14, 'p');
+    AV_WB8 (buf + 15, 'g');
+    AV_WB16(buf + 16, pic->width);
+    AV_WB16(buf + 18, pic->height);
+    buf[20] = 0x83; // {10}(422){00}{00}(frame){11}
+    buf[21] = 0;
+    buf[22] = 2;
+    buf[23] = 2;
+    buf[24] = 6;
+    buf[25] = 32;
+    buf[26] = 0;
+    buf[27] = 3;
+
+    memcpy(buf + 28, QMAT_LUMA[avctx->profile], 64);
+    memcpy(buf + 92, QMAT_CHROMA[avctx->profile], 64);
+
+    return pic_size + 8 + header_size;
+}
+
+static void scale_mat(const uint8_t* src, int* dst, int scale)
+{
+    int i;
+    for (i = 0; i < 64; i++)
+        dst[i] = src[i] * scale;
+}
+
+static av_cold int prores_encode_init(AVCodecContext *avctx)
+{
+    int i;
+    ProresContext* ctx = (ProresContext*)avctx->priv_data;
+
+    if (avctx->pix_fmt != PIX_FMT_YUV422P10LE) {
+        av_log(avctx, AV_LOG_ERROR, "need YUV422P10\n");
+        return -1;
+    }
+    if (avctx->width & 0x1) {
+        av_log(avctx, AV_LOG_ERROR,
+                "frame width needs to be multiple of 2\n");
+        return -1;
+    }
+
+    memset(ctx, 0, sizeof(ProresContext));
+    if ((avctx->height & 0xf) || (avctx->width & 0xf)) {
+        ctx->fill_y = av_malloc(DEFAULT_SLICE_MB_WIDTH << 9);
+        ctx->fill_u = av_malloc(DEFAULT_SLICE_MB_WIDTH << 8);
+        ctx->fill_v = av_malloc(DEFAULT_SLICE_MB_WIDTH << 8);
+    }
+
+    if (avctx->profile == FF_PROFILE_UNKNOWN) {
+        avctx->profile = FF_PROFILE_PRORES_STANDARD;
+        av_log(avctx, AV_LOG_INFO,
+                "encoding with ProRes standard (apcn) profile\n");
+
+    } else if (avctx->profile < FF_PROFILE_PRORES_PROXY
+            || avctx->profile > FF_PROFILE_PRORES_HQ) {
+        av_log(
+                avctx,
+                AV_LOG_ERROR,
+                "unknown profile %d, use [0 - apco, 1 - apcs, 2 - apcn (default), 3 - apch]\n",
+                avctx->profile);
+        return -1;
+    }
+
+    avctx->codec_tag = AV_RL32((const uint8_t*)profiles[avctx->profile].name);
+
+    for (i = 1; i <= 16; i++) {
+        scale_mat(QMAT_LUMA[avctx->profile]  , ctx->qmat_luma[i - 1]  , i);
+        scale_mat(QMAT_CHROMA[avctx->profile], ctx->qmat_chroma[i - 1], i);
+    }
+
+    avctx->coded_frame = avcodec_alloc_frame();
+    avctx->coded_frame->key_frame = 1;
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+
+    return 0;
+}
+
+static av_cold int prores_encode_close(AVCodecContext *avctx)
+{
+    ProresContext* ctx = (ProresContext*)avctx->priv_data;
+    av_freep(&avctx->coded_frame);
+    av_free(ctx->fill_y);
+    av_free(ctx->fill_u);
+    av_free(ctx->fill_v);
+
+    return 0;
+}
+
+AVCodec ff_prores_encoder = {
+    .name           = "prores",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = CODEC_ID_PRORES,
+    .priv_data_size = sizeof(ProresContext),
+    .init           = prores_encode_init,
+    .close          = prores_encode_close,
+    .encode         = prores_encode_frame,
+    .pix_fmts       = (const enum PixelFormat[]){PIX_FMT_YUV422P10LE, PIX_FMT_NONE},
+    .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes"),
+    .capabilities   = 0,
+    .profiles       = profiles
+};