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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * AVS encoding using the xavs library |
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| 3 | * Copyright (C) 2010 Amanda, Y.N. Wu |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include |
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| 23 | #include |
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| 24 | #include |
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| 25 | #include |
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| 26 | #include |
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| 27 | #include |
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| 28 | #include |
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| 29 | #include "avcodec.h" |
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| 30 | #include "internal.h" |
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| 31 | #include "libavutil/internal.h" |
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| 32 | #include "libavutil/mem.h" |
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| 33 | #include "libavutil/opt.h" |
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| 34 | |||
| 35 | #define END_OF_STREAM 0x001 |
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| 36 | |||
| 37 | #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ |
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| 38 | #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ |
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| 39 | #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ |
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| 40 | |||
| 41 | typedef struct XavsContext { |
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| 42 | AVClass *class; |
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| 43 | xavs_param_t params; |
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| 44 | xavs_t *enc; |
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| 45 | xavs_picture_t pic; |
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| 46 | uint8_t *sei; |
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| 47 | int sei_size; |
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| 48 | AVFrame out_pic; |
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| 49 | int end_of_stream; |
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| 50 | float crf; |
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| 51 | int cqp; |
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| 52 | int b_bias; |
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| 53 | float cplxblur; |
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| 54 | int direct_pred; |
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| 55 | int aud; |
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| 56 | int fast_pskip; |
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| 57 | int mbtree; |
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| 58 | int mixed_refs; |
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| 59 | |||
| 60 | int64_t *pts_buffer; |
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| 61 | int out_frame_count; |
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| 62 | } XavsContext; |
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| 63 | |||
| 64 | static void XAVS_log(void *p, int level, const char *fmt, va_list args) |
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| 65 | { |
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| 66 | static const int level_map[] = { |
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| 67 | [XAVS_LOG_ERROR] = AV_LOG_ERROR, |
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| 68 | [XAVS_LOG_WARNING] = AV_LOG_WARNING, |
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| 69 | [XAVS_LOG_INFO] = AV_LOG_INFO, |
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| 70 | [XAVS_LOG_DEBUG] = AV_LOG_DEBUG |
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| 71 | }; |
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| 72 | |||
| 73 | if (level < 0 || level > XAVS_LOG_DEBUG) |
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| 74 | return; |
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| 75 | |||
| 76 | av_vlog(p, level_map[level], fmt, args); |
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| 77 | } |
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| 78 | |||
| 79 | static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, |
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| 80 | xavs_nal_t *nals, int nnal) |
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| 81 | { |
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| 82 | XavsContext *x4 = ctx->priv_data; |
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| 83 | uint8_t *p; |
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| 84 | int i, s, ret, size = x4->sei_size + FF_MIN_BUFFER_SIZE; |
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| 85 | |||
| 86 | if (!nnal) |
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| 87 | return 0; |
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| 88 | |||
| 89 | for (i = 0; i < nnal; i++) |
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| 90 | size += nals[i].i_payload; |
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| 91 | |||
| 92 | if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0) |
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| 93 | return ret; |
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| 94 | p = pkt->data; |
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| 95 | |||
| 96 | /* Write the SEI as part of the first frame. */ |
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| 97 | if (x4->sei_size > 0 && nnal > 0) { |
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| 98 | memcpy(p, x4->sei, x4->sei_size); |
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| 99 | p += x4->sei_size; |
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| 100 | x4->sei_size = 0; |
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| 101 | } |
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| 102 | |||
| 103 | for (i = 0; i < nnal; i++) { |
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| 104 | s = xavs_nal_encode(p, &size, 1, nals + i); |
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| 105 | if (s < 0) |
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| 106 | return -1; |
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| 107 | p += s; |
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| 108 | } |
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| 109 | pkt->size = p - pkt->data; |
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| 110 | |||
| 111 | return 1; |
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| 112 | } |
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| 113 | |||
| 114 | static int XAVS_frame(AVCodecContext *ctx, AVPacket *pkt, |
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| 115 | const AVFrame *frame, int *got_packet) |
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| 116 | { |
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| 117 | XavsContext *x4 = ctx->priv_data; |
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| 118 | xavs_nal_t *nal; |
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| 119 | int nnal, i, ret; |
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| 120 | xavs_picture_t pic_out; |
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| 121 | |||
| 122 | x4->pic.img.i_csp = XAVS_CSP_I420; |
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| 123 | x4->pic.img.i_plane = 3; |
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| 124 | |||
| 125 | if (frame) { |
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| 126 | for (i = 0; i < 3; i++) { |
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| 127 | x4->pic.img.plane[i] = frame->data[i]; |
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| 128 | x4->pic.img.i_stride[i] = frame->linesize[i]; |
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| 129 | } |
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| 130 | |||
| 131 | x4->pic.i_pts = frame->pts; |
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| 132 | x4->pic.i_type = XAVS_TYPE_AUTO; |
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| 133 | x4->pts_buffer[ctx->frame_number % (ctx->max_b_frames+1)] = frame->pts; |
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| 134 | } |
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| 135 | |||
| 136 | if (xavs_encoder_encode(x4->enc, &nal, &nnal, |
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| 137 | frame? &x4->pic: NULL, &pic_out) < 0) |
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| 138 | return -1; |
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| 139 | |||
| 140 | ret = encode_nals(ctx, pkt, nal, nnal); |
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| 141 | |||
| 142 | if (ret < 0) |
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| 143 | return -1; |
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| 144 | |||
| 145 | if (!ret) { |
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| 146 | if (!frame && !(x4->end_of_stream)) { |
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| 147 | if ((ret = ff_alloc_packet2(ctx, pkt, 4)) < 0) |
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| 148 | return ret; |
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| 149 | |||
| 150 | pkt->data[0] = 0x0; |
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| 151 | pkt->data[1] = 0x0; |
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| 152 | pkt->data[2] = 0x01; |
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| 153 | pkt->data[3] = 0xb1; |
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| 154 | pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(ctx->max_b_frames+1)] - |
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| 155 | x4->pts_buffer[(x4->out_frame_count-2)%(ctx->max_b_frames+1)]; |
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| 156 | x4->end_of_stream = END_OF_STREAM; |
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| 157 | *got_packet = 1; |
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| 158 | } |
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| 159 | return 0; |
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| 160 | } |
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| 161 | |||
| 162 | x4->out_pic.pts = pic_out.i_pts; |
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| 163 | pkt->pts = pic_out.i_pts; |
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| 164 | if (ctx->has_b_frames) { |
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| 165 | if (!x4->out_frame_count) |
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| 166 | pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); |
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| 167 | else |
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| 168 | pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(ctx->max_b_frames+1)]; |
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| 169 | } else |
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| 170 | pkt->dts = pkt->pts; |
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| 171 | |||
| 172 | switch (pic_out.i_type) { |
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| 173 | case XAVS_TYPE_IDR: |
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| 174 | case XAVS_TYPE_I: |
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| 175 | x4->out_pic.pict_type = AV_PICTURE_TYPE_I; |
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| 176 | break; |
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| 177 | case XAVS_TYPE_P: |
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| 178 | x4->out_pic.pict_type = AV_PICTURE_TYPE_P; |
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| 179 | break; |
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| 180 | case XAVS_TYPE_B: |
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| 181 | case XAVS_TYPE_BREF: |
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| 182 | x4->out_pic.pict_type = AV_PICTURE_TYPE_B; |
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| 183 | break; |
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| 184 | } |
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| 185 | |||
| 186 | /* There is no IDR frame in AVS JiZhun */ |
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| 187 | /* Sequence header is used as a flag */ |
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| 188 | if (pic_out.i_type == XAVS_TYPE_I) { |
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| 189 | x4->out_pic.key_frame = 1; |
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| 190 | pkt->flags |= AV_PKT_FLAG_KEY; |
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| 191 | } |
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| 192 | |||
| 193 | x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; |
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| 194 | |||
| 195 | x4->out_frame_count++; |
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| 196 | *got_packet = ret; |
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| 197 | return 0; |
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| 198 | } |
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| 199 | |||
| 200 | static av_cold int XAVS_close(AVCodecContext *avctx) |
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| 201 | { |
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| 202 | XavsContext *x4 = avctx->priv_data; |
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| 203 | |||
| 204 | av_freep(&avctx->extradata); |
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| 205 | av_free(x4->sei); |
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| 206 | av_freep(&x4->pts_buffer); |
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| 207 | |||
| 208 | if (x4->enc) |
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| 209 | xavs_encoder_close(x4->enc); |
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| 210 | |||
| 211 | return 0; |
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| 212 | } |
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| 213 | |||
| 214 | static av_cold int XAVS_init(AVCodecContext *avctx) |
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| 215 | { |
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| 216 | XavsContext *x4 = avctx->priv_data; |
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| 217 | |||
| 218 | x4->sei_size = 0; |
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| 219 | xavs_param_default(&x4->params); |
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| 220 | |||
| 221 | x4->params.pf_log = XAVS_log; |
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| 222 | x4->params.p_log_private = avctx; |
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| 223 | x4->params.i_keyint_max = avctx->gop_size; |
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| 224 | if (avctx->bit_rate) { |
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| 225 | x4->params.rc.i_bitrate = avctx->bit_rate / 1000; |
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| 226 | x4->params.rc.i_rc_method = XAVS_RC_ABR; |
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| 227 | } |
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| 228 | x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; |
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| 229 | x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; |
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| 230 | x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; |
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| 231 | if (avctx->flags & CODEC_FLAG_PASS2) { |
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| 232 | x4->params.rc.b_stat_read = 1; |
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| 233 | } else { |
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| 234 | if (x4->crf >= 0) { |
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| 235 | x4->params.rc.i_rc_method = XAVS_RC_CRF; |
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| 236 | x4->params.rc.f_rf_constant = x4->crf; |
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| 237 | } else if (x4->cqp >= 0) { |
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| 238 | x4->params.rc.i_rc_method = XAVS_RC_CQP; |
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| 239 | x4->params.rc.i_qp_constant = x4->cqp; |
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| 240 | } |
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| 241 | } |
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| 242 | |||
| 243 | if (x4->aud >= 0) |
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| 244 | x4->params.b_aud = x4->aud; |
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| 245 | if (x4->mbtree >= 0) |
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| 246 | x4->params.rc.b_mb_tree = x4->mbtree; |
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| 247 | if (x4->direct_pred >= 0) |
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| 248 | x4->params.analyse.i_direct_mv_pred = x4->direct_pred; |
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| 249 | if (x4->fast_pskip >= 0) |
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| 250 | x4->params.analyse.b_fast_pskip = x4->fast_pskip; |
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| 251 | if (x4->mixed_refs >= 0) |
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| 252 | x4->params.analyse.b_mixed_references = x4->mixed_refs; |
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| 253 | if (x4->b_bias != INT_MIN) |
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| 254 | x4->params.i_bframe_bias = x4->b_bias; |
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| 255 | if (x4->cplxblur >= 0) |
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| 256 | x4->params.rc.f_complexity_blur = x4->cplxblur; |
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| 257 | |||
| 258 | x4->params.i_bframe = avctx->max_b_frames; |
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| 259 | /* cabac is not included in AVS JiZhun Profile */ |
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| 260 | x4->params.b_cabac = 0; |
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| 261 | |||
| 262 | x4->params.i_bframe_adaptive = avctx->b_frame_strategy; |
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| 263 | |||
| 264 | avctx->has_b_frames = !!avctx->max_b_frames; |
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| 265 | |||
| 266 | /* AVS doesn't allow B picture as reference */ |
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| 267 | /* The max allowed reference frame number of B is 2 */ |
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| 268 | x4->params.i_keyint_min = avctx->keyint_min; |
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| 269 | if (x4->params.i_keyint_min > x4->params.i_keyint_max) |
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| 270 | x4->params.i_keyint_min = x4->params.i_keyint_max; |
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| 271 | |||
| 272 | x4->params.i_scenecut_threshold = avctx->scenechange_threshold; |
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| 273 | |||
| 274 | // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; |
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| 275 | |||
| 276 | x4->params.rc.i_qp_min = avctx->qmin; |
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| 277 | x4->params.rc.i_qp_max = avctx->qmax; |
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| 278 | x4->params.rc.i_qp_step = avctx->max_qdiff; |
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| 279 | |||
| 280 | x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ |
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| 281 | x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ |
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| 282 | |||
| 283 | x4->params.i_frame_reference = avctx->refs; |
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| 284 | |||
| 285 | x4->params.i_width = avctx->width; |
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| 286 | x4->params.i_height = avctx->height; |
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| 287 | x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; |
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| 288 | x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; |
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| 289 | /* This is only used for counting the fps */ |
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| 290 | x4->params.i_fps_num = avctx->time_base.den; |
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| 291 | x4->params.i_fps_den = avctx->time_base.num; |
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| 292 | x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; |
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| 293 | |||
| 294 | switch (avctx->me_method) { |
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| 295 | case ME_EPZS: |
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| 296 | x4->params.analyse.i_me_method = XAVS_ME_DIA; |
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| 297 | break; |
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| 298 | case ME_HEX: |
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| 299 | x4->params.analyse.i_me_method = XAVS_ME_HEX; |
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| 300 | break; |
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| 301 | case ME_UMH: |
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| 302 | x4->params.analyse.i_me_method = XAVS_ME_UMH; |
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| 303 | break; |
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| 304 | case ME_FULL: |
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| 305 | x4->params.analyse.i_me_method = XAVS_ME_ESA; |
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| 306 | break; |
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| 307 | case ME_TESA: |
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| 308 | x4->params.analyse.i_me_method = XAVS_ME_TESA; |
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| 309 | break; |
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| 310 | default: |
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| 311 | x4->params.analyse.i_me_method = XAVS_ME_HEX; |
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| 312 | } |
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| 313 | |||
| 314 | x4->params.analyse.i_me_range = avctx->me_range; |
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| 315 | x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; |
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| 316 | |||
| 317 | x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; |
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| 318 | /* AVS P2 only enables 8x8 transform */ |
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| 319 | x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT; |
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| 320 | |||
| 321 | x4->params.analyse.i_trellis = avctx->trellis; |
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| 322 | x4->params.analyse.i_noise_reduction = avctx->noise_reduction; |
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| 323 | |||
| 324 | if (avctx->level > 0) |
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| 325 | x4->params.i_level_idc = avctx->level; |
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| 326 | |||
| 327 | x4->params.rc.f_rate_tolerance = |
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| 328 | (float)avctx->bit_rate_tolerance/avctx->bit_rate; |
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| 329 | |||
| 330 | if ((avctx->rc_buffer_size) && |
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| 331 | (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { |
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| 332 | x4->params.rc.f_vbv_buffer_init = |
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| 333 | (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; |
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| 334 | } else |
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| 335 | x4->params.rc.f_vbv_buffer_init = 0.9; |
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| 336 | |||
| 337 | /* TAG:do we have MB tree RC method */ |
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| 338 | /* what is the RC method we are now using? Default NO */ |
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| 339 | x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); |
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| 340 | x4->params.rc.f_pb_factor = avctx->b_quant_factor; |
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| 341 | x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; |
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| 342 | |||
| 343 | x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; |
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| 344 | x4->params.i_log_level = XAVS_LOG_DEBUG; |
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| 345 | x4->params.i_threads = avctx->thread_count; |
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| 346 | x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; |
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| 347 | |||
| 348 | if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) |
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| 349 | x4->params.b_repeat_headers = 0; |
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| 350 | |||
| 351 | x4->enc = xavs_encoder_open(&x4->params); |
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| 352 | if (!x4->enc) |
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| 353 | return -1; |
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| 354 | |||
| 355 | if (!(x4->pts_buffer = av_mallocz((avctx->max_b_frames+1) * sizeof(*x4->pts_buffer)))) |
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| 356 | return AVERROR(ENOMEM); |
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| 357 | |||
| 358 | avctx->coded_frame = &x4->out_pic; |
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| 359 | /* TAG: Do we have GLOBAL HEADER in AVS */ |
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| 360 | /* We Have PPS and SPS in AVS */ |
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| 361 | if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { |
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| 362 | xavs_nal_t *nal; |
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| 363 | int nnal, s, i, size; |
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| 364 | uint8_t *p; |
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| 365 | |||
| 366 | s = xavs_encoder_headers(x4->enc, &nal, &nnal); |
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| 367 | |||
| 368 | avctx->extradata = p = av_malloc(s); |
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| 369 | for (i = 0; i < nnal; i++) { |
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| 370 | /* Don't put the SEI in extradata. */ |
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| 371 | if (nal[i].i_type == NAL_SEI) { |
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| 372 | x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); |
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| 373 | if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) |
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| 374 | return -1; |
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| 375 | |||
| 376 | continue; |
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| 377 | } |
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| 378 | size = xavs_nal_encode(p, &s, 1, nal + i); |
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| 379 | if (size < 0) |
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| 380 | return -1; |
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| 381 | p += size; |
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| 382 | } |
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| 383 | avctx->extradata_size = p - avctx->extradata; |
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| 384 | } |
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| 385 | return 0; |
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| 386 | } |
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| 387 | |||
| 388 | #define OFFSET(x) offsetof(XavsContext, x) |
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| 389 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
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| 390 | static const AVOption options[] = { |
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| 391 | { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, |
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| 392 | { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, |
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| 393 | { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, |
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| 394 | { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, |
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| 395 | { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, |
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| 396 | { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, |
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| 397 | { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, |
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| 398 | { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, |
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| 399 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, |
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| 400 | { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
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| 401 | { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
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| 402 | { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE }, |
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| 403 | { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
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| 404 | { NULL }, |
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| 405 | }; |
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| 406 | |||
| 407 | static const AVClass xavs_class = { |
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| 408 | .class_name = "libxavs", |
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| 409 | .item_name = av_default_item_name, |
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| 410 | .option = options, |
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| 411 | .version = LIBAVUTIL_VERSION_INT, |
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| 412 | }; |
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| 413 | |||
| 414 | static const AVCodecDefault xavs_defaults[] = { |
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| 415 | { "b", "0" }, |
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| 416 | { NULL }, |
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| 417 | }; |
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| 418 | |||
| 419 | AVCodec ff_libxavs_encoder = { |
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| 420 | .name = "libxavs", |
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| 421 | .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"), |
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| 422 | .type = AVMEDIA_TYPE_VIDEO, |
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| 423 | .id = AV_CODEC_ID_CAVS, |
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| 424 | .priv_data_size = sizeof(XavsContext), |
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| 425 | .init = XAVS_init, |
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| 426 | .encode2 = XAVS_frame, |
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| 427 | .close = XAVS_close, |
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| 428 | .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, |
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| 429 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
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| 430 | .priv_class = &xavs_class, |
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| 431 | .defaults = xavs_defaults, |
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| 432 | }; |