| /* |
| * 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 "libavutil/attributes.h" |
| #include "libavutil/mem.h" |
| |
| #include "aandcttab.h" |
| #include "asv.h" |
| #include "avcodec.h" |
| #include "dct.h" |
| #include "fdctdsp.h" |
| #include "internal.h" |
| #include "mathops.h" |
| #include "mpeg12data.h" |
| |
| static inline void asv2_put_bits(PutBitContext *pb, int n, int v) |
| { |
| put_bits(pb, n, ff_reverse[v << (8 - n)]); |
| } |
| |
| 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, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]); |
| put_sbits(pb, 8, level); |
| } |
| } |
| |
| static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level) |
| { |
| unsigned int index = level + 31; |
| |
| if (index <= 62) { |
| put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]); |
| } else { |
| put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]); |
| if (level < -128 || level > 127) { |
| av_log(a->avctx, AV_LOG_WARNING, "Cliping level %d, increase qscale\n", level); |
| level = av_clip_int8(level); |
| } |
| asv2_put_bits(pb, 8, level & 0xFF); |
| } |
| } |
| |
| static inline void asv1_encode_block(ASV1Context *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, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]); |
| |
| 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, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]); |
| } |
| |
| static inline void asv2_encode_block(ASV1Context *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; |
| |
| asv2_put_bits(&a->pb, 4, count); |
| asv2_put_bits(&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(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]); |
| else |
| put_bits(&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(ASV1Context *a, int16_t block[6][64]) |
| { |
| int i; |
| |
| if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb) >> 3) < MAX_MB_SIZE) { |
| av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| |
| if (a->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(ASV1Context *a, const AVFrame *frame, |
| int mb_x, int mb_y) |
| { |
| int16_t (*block)[64] = a->block; |
| int linesize = frame->linesize[0]; |
| int i; |
| |
| uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16; |
| uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8; |
| 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->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) |
| { |
| ASV1Context *const a = avctx->priv_data; |
| int size, ret; |
| int mb_x, mb_y; |
| |
| 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, 32); |
| 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_packet2(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE + |
| AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0) |
| return ret; |
| |
| init_put_bits(&a->pb, pkt->data, pkt->size); |
| |
| for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { |
| for (mb_x = 0; mb_x < a->mb_width2; mb_x++) { |
| dct_get(a, pict, mb_x, mb_y); |
| encode_mb(a, a->block); |
| } |
| } |
| |
| if (a->mb_width2 != a->mb_width) { |
| mb_x = a->mb_width2; |
| for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { |
| dct_get(a, pict, mb_x, mb_y); |
| encode_mb(a, a->block); |
| } |
| } |
| |
| if (a->mb_height2 != a->mb_height) { |
| mb_y = a->mb_height2; |
| for (mb_x = 0; mb_x < a->mb_width; mb_x++) { |
| dct_get(a, pict, mb_x, mb_y); |
| encode_mb(a, a->block); |
| } |
| } |
| emms_c(); |
| |
| avpriv_align_put_bits(&a->pb); |
| while (put_bits_count(&a->pb) & 31) |
| put_bits(&a->pb, 8, 0); |
| |
| size = put_bits_count(&a->pb) / 32; |
| |
| if (avctx->codec_id == AV_CODEC_ID_ASV1) { |
| a->bbdsp.bswap_buf((uint32_t *) pkt->data, |
| (uint32_t *) pkt->data, size); |
| } else { |
| int i; |
| for (i = 0; i < 4 * size; i++) |
| pkt->data[i] = ff_reverse[pkt->data[i]]; |
| } |
| |
| pkt->size = size * 4; |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| *got_packet = 1; |
| |
| return 0; |
| } |
| |
| static av_cold int encode_init(AVCodecContext *avctx) |
| { |
| ASV1Context *const a = avctx->priv_data; |
| int i; |
| const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2; |
| |
| 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; |
| |
| a->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; |
| ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->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)a->inv_qscale << 30) + q / 2) / q; |
| } else { |
| int q = 32 * scale * ff_mpeg1_default_intra_matrix[i]; |
| a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q; |
| } |
| } |
| |
| return 0; |
| } |
| |
| #if CONFIG_ASV1_ENCODER |
| AVCodec ff_asv1_encoder = { |
| .name = "asv1", |
| .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_ASV1, |
| .priv_data_size = sizeof(ASV1Context), |
| .init = encode_init, |
| .encode2 = encode_frame, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_NONE }, |
| .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
| }; |
| #endif |
| |
| #if CONFIG_ASV2_ENCODER |
| AVCodec ff_asv2_encoder = { |
| .name = "asv2", |
| .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_ASV2, |
| .priv_data_size = sizeof(ASV1Context), |
| .init = encode_init, |
| .encode2 = encode_frame, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_NONE }, |
| .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
| }; |
| #endif |
