X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Frawdec.c;h=3b69e49e8451c1d1613f21e72008afac5be2ca31;hb=9a738c27dceb4b975784b23213a46f5cb560d1c2;hp=9fbdbb79e1a8a28c63070610a1e4470b7df7e311;hpb=83f02883df1936988d54fb0861798e4f906c8655;p=ffmpeg diff --git a/libavcodec/rawdec.c b/libavcodec/rawdec.c index 9fbdbb79e1a..3b69e49e845 100644 --- a/libavcodec/rawdec.c +++ b/libavcodec/rawdec.c @@ -1,165 +1,267 @@ /* * Raw Video Decoder - * Copyright (c) 2001 Fabrice Bellard. + * Copyright (c) 2001 Fabrice Bellard * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file rawdec.c + * @file * Raw Video Decoder */ #include "avcodec.h" +#include "internal.h" #include "raw.h" +#include "libavutil/buffer.h" +#include "libavutil/common.h" +#include "libavutil/intreadwrite.h" +#include "libavutil/imgutils.h" typedef struct RawVideoContext { - unsigned char * buffer; /* block of memory for holding one frame */ - int length; /* number of bytes in buffer */ - AVFrame pic; ///< AVCodecContext.coded_frame + AVBufferRef *palette; + int frame_size; /* size of the frame in bytes */ + int flip; + int is_2_4_bpp; // 2 or 4 bpp raw in avi/mov + int is_yuv2; } RawVideoContext; -static const PixelFormatTag pixelFormatBpsAVI[] = { - { PIX_FMT_PAL8, 4 }, - { PIX_FMT_PAL8, 8 }, - { PIX_FMT_RGB555, 15 }, - { PIX_FMT_RGB555, 16 }, - { PIX_FMT_BGR24, 24 }, - { PIX_FMT_RGB32, 32 }, - { -1, 0 }, +static const PixelFormatTag pix_fmt_bps_avi[] = { + { AV_PIX_FMT_PAL8, 4 }, + { AV_PIX_FMT_PAL8, 8 }, + { AV_PIX_FMT_RGB444, 12 }, + { AV_PIX_FMT_RGB555, 15 }, + { AV_PIX_FMT_RGB555, 16 }, + { AV_PIX_FMT_BGR24, 24 }, + { AV_PIX_FMT_RGB32, 32 }, + { AV_PIX_FMT_NONE, 0 }, }; -static const PixelFormatTag pixelFormatBpsMOV[] = { - /* FIXME fix swscaler to support those */ - /* http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html */ - { PIX_FMT_PAL8, 4 }, - { PIX_FMT_PAL8, 8 }, - { PIX_FMT_BGR555, 16 }, - { PIX_FMT_RGB24, 24 }, - { PIX_FMT_BGR32_1, 32 }, - { -1, 0 }, +static const PixelFormatTag pix_fmt_bps_mov[] = { + { AV_PIX_FMT_MONOWHITE, 1 }, + { AV_PIX_FMT_PAL8, 2 }, + { AV_PIX_FMT_PAL8, 4 }, + { AV_PIX_FMT_PAL8, 8 }, + // FIXME swscale does not support 16 bit in .mov, sample 16bit.mov + // http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html + { AV_PIX_FMT_RGB555BE, 16 }, + { AV_PIX_FMT_RGB24, 24 }, + { AV_PIX_FMT_ARGB, 32 }, + { AV_PIX_FMT_MONOWHITE,33 }, + { AV_PIX_FMT_NONE, 0 }, }; -static int findPixelFormat(const PixelFormatTag *tags, unsigned int fourcc) +static enum AVPixelFormat find_pix_fmt(const PixelFormatTag *tags, + unsigned int fourcc) { while (tags->pix_fmt >= 0) { if (tags->fourcc == fourcc) return tags->pix_fmt; tags++; } - return PIX_FMT_YUV420P; + return AV_PIX_FMT_YUV420P; } -static int raw_init_decoder(AVCodecContext *avctx) +static av_cold int raw_init_decoder(AVCodecContext *avctx) { RawVideoContext *context = avctx->priv_data; + const AVPixFmtDescriptor *desc; - if (avctx->codec_tag == MKTAG('r','a','w',' ')) - avctx->pix_fmt = findPixelFormat(pixelFormatBpsMOV, avctx->bits_per_sample); + if (avctx->codec_tag == MKTAG('r', 'a', 'w', ' ')) + avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov, + avctx->bits_per_coded_sample); + else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W')) + avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, + avctx->bits_per_coded_sample); else if (avctx->codec_tag) - avctx->pix_fmt = findPixelFormat(ff_raw_pixelFormatTags, avctx->codec_tag); - else if (avctx->bits_per_sample) - avctx->pix_fmt = findPixelFormat(pixelFormatBpsAVI, avctx->bits_per_sample); + avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag); + else if (avctx->pix_fmt == AV_PIX_FMT_NONE && avctx->bits_per_coded_sample) + avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, + avctx->bits_per_coded_sample); - context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height); - context->buffer = av_malloc(context->length); - context->pic.pict_type = FF_I_TYPE; - context->pic.key_frame = 1; + desc = av_pix_fmt_desc_get(avctx->pix_fmt); + if (!desc) { + av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n"); + return AVERROR(EINVAL); + } - avctx->coded_frame= &context->pic; + if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_PSEUDOPAL)) { + context->palette = av_buffer_alloc(AVPALETTE_SIZE); + if (!context->palette) + return AVERROR(ENOMEM); + if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) + avpriv_set_systematic_pal2((uint32_t*)context->palette->data, avctx->pix_fmt); + else + memset(context->palette->data, 0, AVPALETTE_SIZE); + } - if (!context->buffer) - return -1; + context->frame_size = avpicture_get_size(avctx->pix_fmt, avctx->width, + avctx->height); + if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) && + avctx->pix_fmt == AV_PIX_FMT_PAL8 && + (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) + context->is_2_4_bpp = 1; + + if ((avctx->extradata_size >= 9 && + !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) || + avctx->codec_tag == MKTAG(3, 0, 0, 0) || + avctx->codec_tag == MKTAG('W','R','A','W')) + context->flip = 1; + + if (avctx->codec_tag == AV_RL32("yuv2") && + avctx->pix_fmt == AV_PIX_FMT_YUYV422) + context->is_yuv2 = 1; return 0; } -static void flip(AVCodecContext *avctx, AVPicture * picture){ - if(!avctx->codec_tag && avctx->bits_per_sample && picture->linesize[2]==0){ - picture->data[0] += picture->linesize[0] * (avctx->height-1); - picture->linesize[0] *= -1; - } +static void flip(AVCodecContext *avctx, AVPicture *picture) +{ + picture->data[0] += picture->linesize[0] * (avctx->height - 1); + picture->linesize[0] *= -1; } -static int raw_decode(AVCodecContext *avctx, - void *data, int *data_size, - const uint8_t *buf, int buf_size) +static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, + AVPacket *avpkt) { - RawVideoContext *context = avctx->priv_data; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); + RawVideoContext *context = avctx->priv_data; + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + int need_copy = !avpkt->buf || context->is_2_4_bpp || context->is_yuv2; + int res; - AVFrame * frame = (AVFrame *) data; - AVPicture * picture = (AVPicture *) data; + AVFrame *frame = data; + AVPicture *picture = data; - frame->interlaced_frame = avctx->coded_frame->interlaced_frame; - frame->top_field_first = avctx->coded_frame->top_field_first; + frame->pict_type = AV_PICTURE_TYPE_I; + frame->key_frame = 1; - //4bpp raw in avi and mov (yes this is ugly ...) - if(avctx->bits_per_sample == 4 && avctx->pix_fmt==PIX_FMT_PAL8 && - !avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' ')){ + res = ff_decode_frame_props(avctx, frame); + if (res < 0) + return res; + + if (buf_size < context->frame_size - (avctx->pix_fmt == AV_PIX_FMT_PAL8 ? + AVPALETTE_SIZE : 0)) + return -1; + + if (need_copy) + frame->buf[0] = av_buffer_alloc(context->frame_size); + else + frame->buf[0] = av_buffer_ref(avpkt->buf); + if (!frame->buf[0]) + return AVERROR(ENOMEM); + + //2bpp and 4bpp raw in avi and mov (yes this is ugly ...) + if (context->is_2_4_bpp) { int i; - for(i=256*2; i+1 < context->length>>1; i++){ - context->buffer[2*i+0]= buf[i-256*2]>>4; - context->buffer[2*i+1]= buf[i-256*2]&15; + uint8_t *dst = frame->buf[0]->data; + buf_size = context->frame_size - AVPALETTE_SIZE; + if (avctx->bits_per_coded_sample == 4) { + for (i = 0; 2 * i + 1 < buf_size; i++) { + dst[2 * i + 0] = buf[i] >> 4; + dst[2 * i + 1] = buf[i] & 15; + } + } else { + for (i = 0; 4 * i + 3 < buf_size; i++) { + dst[4 * i + 0] = buf[i] >> 6; + dst[4 * i + 1] = buf[i] >> 4 & 3; + dst[4 * i + 2] = buf[i] >> 2 & 3; + dst[4 * i + 3] = buf[i] & 3; + } } - buf= context->buffer + 256*4; - buf_size= context->length - 256*4; + buf = dst; + } else if (need_copy) { + memcpy(frame->buf[0]->data, buf, FFMIN(buf_size, context->frame_size)); + buf = frame->buf[0]->data; } - if(buf_size < context->length - (avctx->pix_fmt==PIX_FMT_PAL8 ? 256*4 : 0)) - return -1; + if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') || + avctx->codec_tag == MKTAG('A', 'V', 'u', 'p')) + buf += buf_size - context->frame_size; + + if ((res = avpicture_fill(picture, buf, avctx->pix_fmt, + avctx->width, avctx->height)) < 0) + return res; + + if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { + const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, + NULL); - avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height); - if(avctx->pix_fmt==PIX_FMT_PAL8 && buf_size < context->length){ - frame->data[1]= context->buffer; + if (pal) { + av_buffer_unref(&context->palette); + context->palette = av_buffer_alloc(AVPALETTE_SIZE); + if (!context->palette) + return AVERROR(ENOMEM); + memcpy(context->palette->data, pal, AVPALETTE_SIZE); + frame->palette_has_changed = 1; + } } - if (avctx->palctrl && avctx->palctrl->palette_changed) { - memcpy(frame->data[1], avctx->palctrl->palette, AVPALETTE_SIZE); - avctx->palctrl->palette_changed = 0; + + if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) || + (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)) { + frame->buf[1] = av_buffer_ref(context->palette); + if (!frame->buf[1]) + return AVERROR(ENOMEM); + frame->data[1] = frame->buf[1]->data; } + if (avctx->pix_fmt == AV_PIX_FMT_BGR24 && + ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size) + frame->linesize[0] = (frame->linesize[0] + 3) & ~3; - flip(avctx, picture); + if (context->flip) + flip(avctx, picture); - if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2')) - { - // swap fields - unsigned char *tmp = picture->data[1]; - picture->data[1] = picture->data[2]; - picture->data[2] = tmp; + if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2') || + avctx->codec_tag == MKTAG('Y', 'V', '1', '6') || + avctx->codec_tag == MKTAG('Y', 'V', '2', '4') || + avctx->codec_tag == MKTAG('Y', 'V', 'U', '9')) + FFSWAP(uint8_t *, picture->data[1], picture->data[2]); + + if (avctx->codec_tag == AV_RL32("yuv2") && + avctx->pix_fmt == AV_PIX_FMT_YUYV422) { + int x, y; + uint8_t *line = picture->data[0]; + for (y = 0; y < avctx->height; y++) { + for (x = 0; x < avctx->width; x++) + line[2 * x + 1] ^= 0x80; + line += picture->linesize[0]; + } } - *data_size = sizeof(AVPicture); + *got_frame = 1; return buf_size; } -static int raw_close_decoder(AVCodecContext *avctx) +static av_cold int raw_close_decoder(AVCodecContext *avctx) { RawVideoContext *context = avctx->priv_data; - av_freep(&context->buffer); + av_buffer_unref(&context->palette); return 0; } -AVCodec rawvideo_decoder = { - "rawvideo", - CODEC_TYPE_VIDEO, - CODEC_ID_RAWVIDEO, - sizeof(RawVideoContext), - raw_init_decoder, - NULL, - raw_close_decoder, - raw_decode, +AVCodec ff_rawvideo_decoder = { + .name = "rawvideo", + .long_name = NULL_IF_CONFIG_SMALL("raw video"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_RAWVIDEO, + .priv_data_size = sizeof(RawVideoContext), + .init = raw_init_decoder, + .close = raw_close_decoder, + .decode = raw_decode, };