| /* | |
| * Copyright (c) 2003 Michael Niedermayer | |
| * | |
| * 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 | |
| * ASUS V1/V2 encoder. | |
| */ | |
| #include "config_components.h" | |
| #include "libavutil/attributes.h" | |
| #include "libavutil/mem.h" | |
| #include "libavutil/mem_internal.h" | |
| #include "aandcttab.h" | |
| #include "asv.h" | |
| #include "avcodec.h" | |
| #include "codec_internal.h" | |
| #include "encode.h" | |
| #include "fdctdsp.h" | |
| #include "mpeg12data.h" | |
| #include "pixblockdsp.h" | |
| #include "put_bits.h" | |
| typedef struct ASVEncContext { | |
| ASVCommonContext c; | |
| PutBitContext pb; | |
| PixblockDSPContext pdsp; | |
| FDCTDSPContext fdsp; | |
| DECLARE_ALIGNED(32, int16_t, block)[6][64]; | |
| int q_intra_matrix[64]; | |
| } ASVEncContext; | |
| static inline void asv1_put_level(PutBitContext *pb, int level) | |
| { | |
| unsigned int index = level + 3; | |
| if (index <= 6) { | |
| put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]); | |
| } else { | |
| put_bits(pb, 3, 0); /* Escape code */ | |
| put_sbits(pb, 8, level); | |
| } | |
| } | |
| static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level) | |
| { | |
| unsigned int index = level + 31; | |
| if (index <= 62) { | |
| put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]); | |
| } else { | |
| put_bits_le(pb, 5, 0); /* Escape code */ | |
| if (level < -128 || level > 127) { | |
| av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level); | |
| level = av_clip_int8(level); | |
| } | |
| put_bits_le(pb, 8, level & 0xFF); | |
| } | |
| } | |
| static inline void asv1_encode_block(ASVEncContext *a, int16_t block[64]) | |
| { | |
| int i; | |
| int nc_count = 0; | |
| put_bits(&a->pb, 8, (block[0] + 32) >> 6); | |
| block[0] = 0; | |
| for (i = 0; i < 10; i++) { | |
| const int index = ff_asv_scantab[4 * i]; | |
| int ccp = 0; | |
| if ((block[index + 0] = (block[index + 0] * | |
| a->q_intra_matrix[index + 0] + (1 << 15)) >> 16)) | |
| ccp |= 8; | |
| if ((block[index + 8] = (block[index + 8] * | |
| a->q_intra_matrix[index + 8] + (1 << 15)) >> 16)) | |
| ccp |= 4; | |
| if ((block[index + 1] = (block[index + 1] * | |
| a->q_intra_matrix[index + 1] + (1 << 15)) >> 16)) | |
| ccp |= 2; | |
| if ((block[index + 9] = (block[index + 9] * | |
| a->q_intra_matrix[index + 9] + (1 << 15)) >> 16)) | |
| ccp |= 1; | |
| if (ccp) { | |
| for (; nc_count; nc_count--) | |
| put_bits(&a->pb, 2, 2); /* Skip */ | |
| put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]); | |
| if (ccp & 8) | |
| asv1_put_level(&a->pb, block[index + 0]); | |
| if (ccp & 4) | |
| asv1_put_level(&a->pb, block[index + 8]); | |
| if (ccp & 2) | |
| asv1_put_level(&a->pb, block[index + 1]); | |
| if (ccp & 1) | |
| asv1_put_level(&a->pb, block[index + 9]); | |
| } else { | |
| nc_count++; | |
| } | |
| } | |
| put_bits(&a->pb, 5, 0xF); /* End of block */ | |
| } | |
| static inline void asv2_encode_block(ASVEncContext *a, int16_t block[64]) | |
| { | |
| int i; | |
| int count = 0; | |
| for (count = 63; count > 3; count--) { | |
| const int index = ff_asv_scantab[count]; | |
| if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16) | |
| break; | |
| } | |
| count >>= 2; | |
| put_bits_le(&a->pb, 4, count); | |
| put_bits_le(&a->pb, 8, (block[0] + 32) >> 6); | |
| block[0] = 0; | |
| for (i = 0; i <= count; i++) { | |
| const int index = ff_asv_scantab[4 * i]; | |
| int ccp = 0; | |
| if ((block[index + 0] = (block[index + 0] * | |
| a->q_intra_matrix[index + 0] + (1 << 15)) >> 16)) | |
| ccp |= 8; | |
| if ((block[index + 8] = (block[index + 8] * | |
| a->q_intra_matrix[index + 8] + (1 << 15)) >> 16)) | |
| ccp |= 4; | |
| if ((block[index + 1] = (block[index + 1] * | |
| a->q_intra_matrix[index + 1] + (1 << 15)) >> 16)) | |
| ccp |= 2; | |
| if ((block[index + 9] = (block[index + 9] * | |
| a->q_intra_matrix[index + 9] + (1 << 15)) >> 16)) | |
| ccp |= 1; | |
| av_assert2(i || ccp < 8); | |
| if (i) | |
| put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]); | |
| else | |
| put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]); | |
| if (ccp) { | |
| if (ccp & 8) | |
| asv2_put_level(a, &a->pb, block[index + 0]); | |
| if (ccp & 4) | |
| asv2_put_level(a, &a->pb, block[index + 8]); | |
| if (ccp & 2) | |
| asv2_put_level(a, &a->pb, block[index + 1]); | |
| if (ccp & 1) | |
| asv2_put_level(a, &a->pb, block[index + 9]); | |
| } | |
| } | |
| } | |
| #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8) | |
| static inline int encode_mb(ASVEncContext *a, int16_t block[6][64]) | |
| { | |
| int i; | |
| av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE); | |
| if (a->c.avctx->codec_id == AV_CODEC_ID_ASV1) { | |
| for (i = 0; i < 6; i++) | |
| asv1_encode_block(a, block[i]); | |
| } else { | |
| for (i = 0; i < 6; i++) { | |
| asv2_encode_block(a, block[i]); | |
| } | |
| } | |
| return 0; | |
| } | |
| static inline void dct_get(ASVEncContext *a, const AVFrame *frame, | |
| int mb_x, int mb_y) | |
| { | |
| int16_t (*block)[64] = a->block; | |
| int linesize = frame->linesize[0]; | |
| int i; | |
| const uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16; | |
| const uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8; | |
| const uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8; | |
| a->pdsp.get_pixels(block[0], ptr_y, linesize); | |
| a->pdsp.get_pixels(block[1], ptr_y + 8, linesize); | |
| a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize); | |
| a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize); | |
| for (i = 0; i < 4; i++) | |
| a->fdsp.fdct(block[i]); | |
| if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) { | |
| a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]); | |
| a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]); | |
| for (i = 4; i < 6; i++) | |
| a->fdsp.fdct(block[i]); | |
| } | |
| } | |
| static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| const AVFrame *pict, int *got_packet) | |
| { | |
| ASVEncContext *const a = avctx->priv_data; | |
| const ASVCommonContext *const c = &a->c; | |
| int size, ret; | |
| if (pict->width % 16 || pict->height % 16) { | |
| AVFrame *clone = av_frame_alloc(); | |
| int i; | |
| if (!clone) | |
| return AVERROR(ENOMEM); | |
| clone->format = pict->format; | |
| clone->width = FFALIGN(pict->width, 16); | |
| clone->height = FFALIGN(pict->height, 16); | |
| ret = av_frame_get_buffer(clone, 0); | |
| if (ret < 0) { | |
| av_frame_free(&clone); | |
| return ret; | |
| } | |
| ret = av_frame_copy(clone, pict); | |
| if (ret < 0) { | |
| av_frame_free(&clone); | |
| return ret; | |
| } | |
| for (i = 0; i<3; i++) { | |
| int x, y; | |
| int w = AV_CEIL_RSHIFT(pict->width, !!i); | |
| int h = AV_CEIL_RSHIFT(pict->height, !!i); | |
| int w2 = AV_CEIL_RSHIFT(clone->width, !!i); | |
| int h2 = AV_CEIL_RSHIFT(clone->height, !!i); | |
| for (y=0; y<h; y++) | |
| for (x=w; x<w2; x++) | |
| clone->data[i][x + y*clone->linesize[i]] = | |
| clone->data[i][w - 1 + y*clone->linesize[i]]; | |
| for (y=h; y<h2; y++) | |
| for (x=0; x<w2; x++) | |
| clone->data[i][x + y*clone->linesize[i]] = | |
| clone->data[i][x + (h-1)*clone->linesize[i]]; | |
| } | |
| ret = encode_frame(avctx, pkt, clone, got_packet); | |
| av_frame_free(&clone); | |
| return ret; | |
| } | |
| if ((ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE + | |
| FF_INPUT_BUFFER_MIN_SIZE)) < 0) | |
| return ret; | |
| init_put_bits(&a->pb, pkt->data, pkt->size); | |
| for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) { | |
| for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) { | |
| dct_get(a, pict, mb_x, mb_y); | |
| encode_mb(a, a->block); | |
| } | |
| } | |
| if (c->mb_width2 != c->mb_width) { | |
| int mb_x = c->mb_width2; | |
| for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) { | |
| dct_get(a, pict, mb_x, mb_y); | |
| encode_mb(a, a->block); | |
| } | |
| } | |
| if (c->mb_height2 != c->mb_height) { | |
| int mb_y = c->mb_height2; | |
| for (int mb_x = 0; mb_x < c->mb_width; mb_x++) { | |
| dct_get(a, pict, mb_x, mb_y); | |
| encode_mb(a, a->block); | |
| } | |
| } | |
| if (avctx->codec_id == AV_CODEC_ID_ASV1) | |
| flush_put_bits(&a->pb); | |
| else | |
| flush_put_bits_le(&a->pb); | |
| AV_WN32(put_bits_ptr(&a->pb), 0); | |
| size = (put_bytes_output(&a->pb) + 3) / 4; | |
| if (avctx->codec_id == AV_CODEC_ID_ASV1) { | |
| c->bbdsp.bswap_buf((uint32_t *) pkt->data, | |
| (uint32_t *) pkt->data, size); | |
| } | |
| pkt->size = size * 4; | |
| *got_packet = 1; | |
| return 0; | |
| } | |
| static av_cold int encode_init(AVCodecContext *avctx) | |
| { | |
| ASVEncContext *const a = avctx->priv_data; | |
| int i; | |
| const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2; | |
| int inv_qscale; | |
| ff_asv_common_init(avctx); | |
| ff_fdctdsp_init(&a->fdsp, avctx); | |
| ff_pixblockdsp_init(&a->pdsp, avctx); | |
| if (avctx->global_quality <= 0) | |
| avctx->global_quality = 4 * FF_QUALITY_SCALE; | |
| inv_qscale = (32 * scale * FF_QUALITY_SCALE + | |
| avctx->global_quality / 2) / avctx->global_quality; | |
| avctx->extradata = av_mallocz(8); | |
| if (!avctx->extradata) | |
| return AVERROR(ENOMEM); | |
| avctx->extradata_size = 8; | |
| AV_WLA(32, avctx->extradata, inv_qscale); | |
| ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS")); | |
| for (i = 0; i < 64; i++) { | |
| if (a->fdsp.fdct == ff_fdct_ifast) { | |
| int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i]; | |
| a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q; | |
| } else { | |
| int q = 32 * scale * ff_mpeg1_default_intra_matrix[i]; | |
| a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q; | |
| } | |
| } | |
| return 0; | |
| } | |
| #if CONFIG_ASV1_ENCODER | |
| const FFCodec ff_asv1_encoder = { | |
| .p.name = "asv1", | |
| CODEC_LONG_NAME("ASUS V1"), | |
| .p.type = AVMEDIA_TYPE_VIDEO, | |
| .p.id = AV_CODEC_ID_ASV1, | |
| .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | |
| .priv_data_size = sizeof(ASVEncContext), | |
| .init = encode_init, | |
| FF_CODEC_ENCODE_CB(encode_frame), | |
| .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, | |
| AV_PIX_FMT_NONE }, | |
| }; | |
| #endif | |
| #if CONFIG_ASV2_ENCODER | |
| const FFCodec ff_asv2_encoder = { | |
| .p.name = "asv2", | |
| CODEC_LONG_NAME("ASUS V2"), | |
| .p.type = AVMEDIA_TYPE_VIDEO, | |
| .p.id = AV_CODEC_ID_ASV2, | |
| .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | |
| .priv_data_size = sizeof(ASVEncContext), | |
| .init = encode_init, | |
| FF_CODEC_ENCODE_CB(encode_frame), | |
| .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, | |
| AV_PIX_FMT_NONE }, | |
| }; | |
| #endif |