/*
* 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 "raw.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 */
+ uint32_t palette[AVPALETTE_COUNT];
+ unsigned char *buffer; /* block of memory for holding one frame */
+ int length; /* number of bytes in buffer */
+ int flip;
AVFrame pic; ///< AVCodecContext.coded_frame
} 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, 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;
- 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);
-
- 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;
+ 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);
+
+ avpriv_set_systematic_pal2(context->palette, avctx->pix_fmt);
+ context->length = 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->buffer = av_malloc(context->length);
+ if (!context->buffer)
+ return -1;
+ }
+ context->pic.pict_type = AV_PICTURE_TYPE_I;
context->pic.key_frame = 1;
- avctx->coded_frame= &context->pic;
+ avctx->coded_frame = &context->pic;
- if (!context->buffer)
- return -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;
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,
- 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 res;
- AVFrame * frame = (AVFrame *) data;
- AVPicture * picture = (AVPicture *) data;
+ AVFrame *frame = data;
+ AVPicture *picture = data;
+ frame->pict_type = avctx->coded_frame->pict_type;
frame->interlaced_frame = avctx->coded_frame->interlaced_frame;
- frame->top_field_first = avctx->coded_frame->top_field_first;
+ frame->top_field_first = avctx->coded_frame->top_field_first;
+ frame->reordered_opaque = avctx->reordered_opaque;
+ frame->pkt_pts = avctx->pkt->pts;
+
+ if (buf_size < context->length - (avctx->pix_fmt == AV_PIX_FMT_PAL8 ?
+ AVPALETTE_SIZE : 0))
+ return -1;
- //4bpp raw in avi (yes this is ugly ...)
- if(avctx->bits_per_sample == 4 && avctx->pix_fmt==PIX_FMT_PAL8 && !avctx->codec_tag){
+ //2bpp and 4bpp raw in avi and mov (yes this is ugly ...)
+ if (context->buffer) {
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 = context->buffer;
+ buf_size = context->length - 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;
}
- 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->length;
- 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 ((res = avpicture_fill(picture, buf, avctx->pix_fmt,
+ avctx->width, avctx->height)) < 0)
+ return res;
+ if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->length) ||
+ (desc->flags & PIX_FMT_PSEUDOPAL)) {
+ frame->data[1] = context->palette;
}
- if (avctx->palctrl && avctx->palctrl->palette_changed) {
- memcpy(frame->data[1], avctx->palctrl->palette, AVPALETTE_SIZE);
- avctx->palctrl->palette_changed = 0;
- }
-
- flip(avctx, picture);
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
+ const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE,
+ NULL);
- 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 (pal) {
+ memcpy(frame->data[1], pal, AVPALETTE_SIZE);
+ frame->palette_has_changed = 1;
+ }
+ }
+ 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;
+
+ if (context->flip)
+ flip(avctx, picture);
+
+ 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;
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",
+ .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,
+ .long_name = NULL_IF_CONFIG_SMALL("raw video"),
};
projects / ffmpeg / blobdiff