| /* |
| * V210 decoder |
| * |
| * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> |
| * |
| * 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 |
| */ |
| |
| #include "avcodec.h" |
| #include "internal.h" |
| #include "v210dec.h" |
| #include "libavutil/bswap.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/intreadwrite.h" |
| #include "thread.h" |
| |
| #define READ_PIXELS(a, b, c) \ |
| do { \ |
| val = av_le2ne32(*src++); \ |
| *a++ = val & 0x3FF; \ |
| *b++ = (val >> 10) & 0x3FF; \ |
| *c++ = (val >> 20) & 0x3FF; \ |
| } while (0) |
| |
| typedef struct ThreadData { |
| AVFrame *frame; |
| uint8_t *buf; |
| int stride; |
| } ThreadData; |
| |
| static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width) |
| { |
| uint32_t val; |
| int i; |
| |
| for( i = 0; i < width-5; i += 6 ){ |
| READ_PIXELS(u, y, v); |
| READ_PIXELS(y, u, y); |
| READ_PIXELS(v, y, u); |
| READ_PIXELS(y, v, y); |
| } |
| } |
| |
| av_cold void ff_v210dec_init(V210DecContext *s) |
| { |
| s->unpack_frame = v210_planar_unpack_c; |
| if (ARCH_X86) |
| ff_v210_x86_init(s); |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| V210DecContext *s = avctx->priv_data; |
| |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| avctx->bits_per_raw_sample = 10; |
| |
| s->thread_count = av_clip(avctx->thread_count, 1, avctx->height/4); |
| s->aligned_input = 0; |
| ff_v210dec_init(s); |
| |
| return 0; |
| } |
| |
| static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr) |
| { |
| V210DecContext *s = avctx->priv_data; |
| int h, w; |
| ThreadData *td = arg; |
| AVFrame *frame = td->frame; |
| int stride = td->stride; |
| int slice_start = (avctx->height * jobnr) / s->thread_count; |
| int slice_end = (avctx->height * (jobnr+1)) / s->thread_count; |
| uint8_t *psrc = td->buf + stride * slice_start; |
| uint16_t *y, *u, *v; |
| |
| y = (uint16_t*)frame->data[0] + slice_start * frame->linesize[0] / 2; |
| u = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2; |
| v = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2; |
| for (h = slice_start; h < slice_end; h++) { |
| const uint32_t *src = (const uint32_t*)psrc; |
| uint32_t val; |
| |
| w = (avctx->width / 12) * 12; |
| s->unpack_frame(src, y, u, v, w); |
| |
| y += w; |
| u += w >> 1; |
| v += w >> 1; |
| src += (w << 1) / 3; |
| |
| if (w < avctx->width - 5) { |
| READ_PIXELS(u, y, v); |
| READ_PIXELS(y, u, y); |
| READ_PIXELS(v, y, u); |
| READ_PIXELS(y, v, y); |
| w += 6; |
| } |
| |
| if (w < avctx->width - 1) { |
| READ_PIXELS(u, y, v); |
| |
| val = av_le2ne32(*src++); |
| *y++ = val & 0x3FF; |
| if (w < avctx->width - 3) { |
| *u++ = (val >> 10) & 0x3FF; |
| *y++ = (val >> 20) & 0x3FF; |
| |
| val = av_le2ne32(*src++); |
| *v++ = val & 0x3FF; |
| *y++ = (val >> 10) & 0x3FF; |
| } |
| } |
| |
| psrc += stride; |
| y += frame->linesize[0] / 2 - avctx->width + (avctx->width & 1); |
| u += frame->linesize[1] / 2 - avctx->width / 2; |
| v += frame->linesize[2] / 2 - avctx->width / 2; |
| } |
| |
| return 0; |
| } |
| |
| static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| AVPacket *avpkt) |
| { |
| V210DecContext *s = avctx->priv_data; |
| ThreadData td; |
| int ret, stride, aligned_input; |
| ThreadFrame frame = { .f = data }; |
| AVFrame *pic = data; |
| const uint8_t *psrc = avpkt->data; |
| |
| if (s->custom_stride ) |
| stride = s->custom_stride; |
| else { |
| int aligned_width = ((avctx->width + 47) / 48) * 48; |
| stride = aligned_width * 8 / 3; |
| } |
| |
| if (avpkt->size < stride * avctx->height) { |
| if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) { |
| stride = avpkt->size / avctx->height; |
| if (!s->stride_warning_shown) |
| av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n"); |
| s->stride_warning_shown = 1; |
| } else { |
| av_log(avctx, AV_LOG_ERROR, "packet too small\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| td.stride = stride; |
| if ( avctx->codec_tag == MKTAG('C', '2', '1', '0') |
| && avpkt->size > 64 |
| && AV_RN32(psrc) == AV_RN32("INFO") |
| && avpkt->size - 64 >= stride * avctx->height) |
| psrc += 64; |
| |
| aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f); |
| if (aligned_input != s->aligned_input) { |
| s->aligned_input = aligned_input; |
| ff_v210dec_init(s); |
| } |
| |
| if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
| return ret; |
| |
| pic->pict_type = AV_PICTURE_TYPE_I; |
| pic->key_frame = 1; |
| |
| td.buf = (uint8_t*)psrc; |
| td.frame = pic; |
| avctx->execute2(avctx, v210_decode_slice, &td, NULL, s->thread_count); |
| |
| if (avctx->field_order > AV_FIELD_PROGRESSIVE) { |
| /* we have interlaced material flagged in container */ |
| pic->interlaced_frame = 1; |
| if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) |
| pic->top_field_first = 1; |
| } |
| |
| *got_frame = 1; |
| |
| return avpkt->size; |
| } |
| |
| #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
| static const AVOption v210dec_options[] = { |
| {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT, |
| {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS}, |
| {NULL} |
| }; |
| |
| static const AVClass v210dec_class = { |
| .class_name = "V210 Decoder", |
| .item_name = av_default_item_name, |
| .option = v210dec_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVCodec ff_v210_decoder = { |
| .name = "v210", |
| .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_V210, |
| .priv_data_size = sizeof(V210DecContext), |
| .init = decode_init, |
| .decode = decode_frame, |
| .capabilities = AV_CODEC_CAP_DR1 | |
| AV_CODEC_CAP_SLICE_THREADS | |
| AV_CODEC_CAP_FRAME_THREADS, |
| .priv_class = &v210dec_class, |
| }; |