mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
5f0bc0215a
Fixes out of array read Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
505 lines
19 KiB
C
505 lines
19 KiB
C
/*
|
|
* Raw Video Decoder
|
|
* Copyright (c) 2001 Fabrice Bellard
|
|
*
|
|
* 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
|
|
* Raw Video Decoder
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "bswapdsp.h"
|
|
#include "get_bits.h"
|
|
#include "internal.h"
|
|
#include "raw.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/buffer.h"
|
|
#include "libavutil/common.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
|
|
typedef struct RawVideoContext {
|
|
AVClass *av_class;
|
|
AVBufferRef *palette;
|
|
int frame_size; /* size of the frame in bytes */
|
|
int flip;
|
|
int is_1_2_4_8_bpp; // 1, 2, 4 and 8 bpp in avi/mov, 1 and 8 bpp in nut
|
|
int is_mono;
|
|
int is_pal8;
|
|
int is_nut_mono;
|
|
int is_nut_pal8;
|
|
int is_yuv2;
|
|
int is_lt_16bpp; // 16bpp pixfmt and bits_per_coded_sample < 16
|
|
int tff;
|
|
|
|
BswapDSPContext bbdsp;
|
|
void *bitstream_buf;
|
|
unsigned int bitstream_buf_size;
|
|
} RawVideoContext;
|
|
|
|
static const AVOption options[]={
|
|
{"top", "top field first", offsetof(RawVideoContext, tff), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_VIDEO_PARAM},
|
|
{NULL}
|
|
};
|
|
|
|
static const AVClass rawdec_class = {
|
|
.class_name = "rawdec",
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
static av_cold int raw_init_decoder(AVCodecContext *avctx)
|
|
{
|
|
RawVideoContext *context = avctx->priv_data;
|
|
const AVPixFmtDescriptor *desc;
|
|
|
|
ff_bswapdsp_init(&context->bbdsp);
|
|
|
|
if ( avctx->codec_tag == MKTAG('r','a','w',' ')
|
|
|| avctx->codec_tag == MKTAG('N','O','1','6'))
|
|
avctx->pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_mov,
|
|
avctx->bits_per_coded_sample);
|
|
else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W'))
|
|
avctx->pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
|
|
avctx->bits_per_coded_sample);
|
|
else if (avctx->codec_tag && (avctx->codec_tag & 0xFFFFFF) != MKTAG('B','I','T', 0))
|
|
avctx->pix_fmt = avpriv_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 = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
|
|
avctx->bits_per_coded_sample);
|
|
|
|
desc = av_pix_fmt_desc_get(avctx->pix_fmt);
|
|
if (!desc) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
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 (avctx->bits_per_coded_sample == 1)
|
|
memset(context->palette->data, 0xff, 4);
|
|
}
|
|
}
|
|
|
|
if ((avctx->extradata_size >= 9 &&
|
|
!memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
|
|
avctx->codec_tag == MKTAG('c','y','u','v') ||
|
|
avctx->codec_tag == MKTAG(3, 0, 0, 0) ||
|
|
avctx->codec_tag == MKTAG('W','R','A','W'))
|
|
context->flip = 1;
|
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_MONOWHITE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_MONOBLACK)
|
|
context->is_mono = 1;
|
|
else if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
|
|
context->is_pal8 = 1;
|
|
|
|
if (avctx->codec_tag == MKTAG('B','1','W','0') ||
|
|
avctx->codec_tag == MKTAG('B','0','W','1'))
|
|
context->is_nut_mono = 1;
|
|
else if (avctx->codec_tag == MKTAG('P','A','L',8))
|
|
context->is_nut_pal8 = 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, AVFrame *frame)
|
|
{
|
|
frame->data[0] += frame->linesize[0] * (avctx->height - 1);
|
|
frame->linesize[0] *= -1;
|
|
}
|
|
|
|
/*
|
|
* Scale sample to 16-bit resolution
|
|
*/
|
|
#define SCALE16(x, bits) (((x) << (16 - (bits))) | ((x) >> (2 * (bits) - 16)))
|
|
|
|
/**
|
|
* Scale buffer to 16 bits per coded sample resolution
|
|
*/
|
|
#define MKSCALE16(name, r16, w16) \
|
|
static void name(AVCodecContext *avctx, uint8_t * dst, const uint8_t *buf, int buf_size, int packed) \
|
|
{ \
|
|
int i; \
|
|
if (!packed) { \
|
|
for (i = 0; i + 1 < buf_size; i += 2) \
|
|
w16(dst + i, SCALE16(r16(buf + i), avctx->bits_per_coded_sample)); \
|
|
} else { \
|
|
GetBitContext gb; \
|
|
init_get_bits(&gb, buf, buf_size * 8); \
|
|
for (i = 0; i < avctx->width * avctx->height; i++) { \
|
|
int sample = get_bits(&gb, avctx->bits_per_coded_sample); \
|
|
w16(dst + i*2, SCALE16(sample, avctx->bits_per_coded_sample)); \
|
|
} \
|
|
} \
|
|
}
|
|
|
|
MKSCALE16(scale16be, AV_RB16, AV_WB16)
|
|
MKSCALE16(scale16le, AV_RL16, AV_WL16)
|
|
|
|
static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
|
|
AVPacket *avpkt)
|
|
{
|
|
const AVPixFmtDescriptor *desc;
|
|
RawVideoContext *context = avctx->priv_data;
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
int linesize_align = 4;
|
|
int stride;
|
|
int res, len;
|
|
int need_copy;
|
|
|
|
AVFrame *frame = data;
|
|
|
|
if (avctx->width <= 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "width is not set\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (avctx->height <= 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "height is not set\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (context->is_nut_mono)
|
|
stride = avctx->width / 8 + (avctx->width & 7 ? 1 : 0);
|
|
else if (context->is_nut_pal8)
|
|
stride = avctx->width;
|
|
else
|
|
stride = avpkt->size / avctx->height;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "PACKET SIZE: %d, STRIDE: %d\n", avpkt->size, stride);
|
|
|
|
if (stride == 0 || avpkt->size < stride * avctx->height) {
|
|
av_log(avctx, AV_LOG_ERROR, "Packet too small (%d)\n", avpkt->size);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
desc = av_pix_fmt_desc_get(avctx->pix_fmt);
|
|
|
|
if ((avctx->bits_per_coded_sample == 8 || avctx->bits_per_coded_sample == 4 ||
|
|
avctx->bits_per_coded_sample == 2 || avctx->bits_per_coded_sample == 1 ||
|
|
(avctx->bits_per_coded_sample == 0 && (context->is_nut_pal8 || context->is_mono)) ) &&
|
|
(context->is_mono || context->is_pal8) &&
|
|
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' ') ||
|
|
context->is_nut_mono || context->is_nut_pal8)) {
|
|
context->is_1_2_4_8_bpp = 1;
|
|
if (context->is_mono) {
|
|
int row_bytes = avctx->width / 8 + (avctx->width & 7 ? 1 : 0);
|
|
context->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
|
|
FFALIGN(row_bytes, 16) * 8,
|
|
avctx->height, 1);
|
|
} else
|
|
context->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
|
|
FFALIGN(avctx->width, 16),
|
|
avctx->height, 1);
|
|
} else {
|
|
context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample && avctx->bits_per_coded_sample < 16;
|
|
context->frame_size = av_image_get_buffer_size(avctx->pix_fmt, avctx->width,
|
|
avctx->height, 1);
|
|
}
|
|
if (context->frame_size < 0)
|
|
return context->frame_size;
|
|
|
|
need_copy = !avpkt->buf || context->is_1_2_4_8_bpp || context->is_yuv2 || context->is_lt_16bpp;
|
|
|
|
frame->pict_type = AV_PICTURE_TYPE_I;
|
|
frame->key_frame = 1;
|
|
|
|
res = ff_decode_frame_props(avctx, frame);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
av_frame_set_pkt_pos (frame, avctx->internal->pkt->pos);
|
|
av_frame_set_pkt_duration(frame, avctx->internal->pkt->duration);
|
|
|
|
if (context->tff >= 0) {
|
|
frame->interlaced_frame = 1;
|
|
frame->top_field_first = context->tff;
|
|
}
|
|
|
|
if ((res = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
|
|
return res;
|
|
|
|
if (need_copy)
|
|
frame->buf[0] = av_buffer_alloc(FFMAX(context->frame_size, buf_size));
|
|
else
|
|
frame->buf[0] = av_buffer_ref(avpkt->buf);
|
|
if (!frame->buf[0])
|
|
return AVERROR(ENOMEM);
|
|
|
|
// 1, 2, 4 and 8 bpp in avi/mov, 1 and 8 bpp in nut
|
|
if (context->is_1_2_4_8_bpp) {
|
|
int i, j, row_pix = 0;
|
|
uint8_t *dst = frame->buf[0]->data;
|
|
buf_size = context->frame_size - (context->is_pal8 ? AVPALETTE_SIZE : 0);
|
|
if (avctx->bits_per_coded_sample == 8 || context->is_nut_pal8 || context->is_mono) {
|
|
int pix_per_byte = context->is_mono ? 8 : 1;
|
|
for (i = 0, j = 0; j < buf_size && i<avpkt->size; i++, j++) {
|
|
dst[j] = buf[i];
|
|
row_pix += pix_per_byte;
|
|
if (row_pix >= avctx->width) {
|
|
i += stride - (i % stride) - 1;
|
|
j += 16 - (j % 16) - 1;
|
|
row_pix = 0;
|
|
}
|
|
}
|
|
} else if (avctx->bits_per_coded_sample == 4) {
|
|
for (i = 0, j = 0; 2 * j + 1 < buf_size && i<avpkt->size; i++, j++) {
|
|
dst[2 * j + 0] = buf[i] >> 4;
|
|
dst[2 * j + 1] = buf[i] & 15;
|
|
row_pix += 2;
|
|
if (row_pix >= avctx->width) {
|
|
i += stride - (i % stride) - 1;
|
|
j += 8 - (j % 8) - 1;
|
|
row_pix = 0;
|
|
}
|
|
}
|
|
} else if (avctx->bits_per_coded_sample == 2) {
|
|
for (i = 0, j = 0; 4 * j + 3 < buf_size && i<avpkt->size; i++, j++) {
|
|
dst[4 * j + 0] = buf[i] >> 6;
|
|
dst[4 * j + 1] = buf[i] >> 4 & 3;
|
|
dst[4 * j + 2] = buf[i] >> 2 & 3;
|
|
dst[4 * j + 3] = buf[i] & 3;
|
|
row_pix += 4;
|
|
if (row_pix >= avctx->width) {
|
|
i += stride - (i % stride) - 1;
|
|
j += 4 - (j % 4) - 1;
|
|
row_pix = 0;
|
|
}
|
|
}
|
|
} else {
|
|
av_assert0(avctx->bits_per_coded_sample == 1);
|
|
for (i = 0, j = 0; 8 * j + 7 < buf_size && i<avpkt->size; i++, j++) {
|
|
dst[8 * j + 0] = buf[i] >> 7;
|
|
dst[8 * j + 1] = buf[i] >> 6 & 1;
|
|
dst[8 * j + 2] = buf[i] >> 5 & 1;
|
|
dst[8 * j + 3] = buf[i] >> 4 & 1;
|
|
dst[8 * j + 4] = buf[i] >> 3 & 1;
|
|
dst[8 * j + 5] = buf[i] >> 2 & 1;
|
|
dst[8 * j + 6] = buf[i] >> 1 & 1;
|
|
dst[8 * j + 7] = buf[i] & 1;
|
|
row_pix += 8;
|
|
if (row_pix >= avctx->width) {
|
|
i += stride - (i % stride) - 1;
|
|
j += 2 - (j % 2) - 1;
|
|
row_pix = 0;
|
|
}
|
|
}
|
|
}
|
|
linesize_align = 16;
|
|
buf = dst;
|
|
} else if (context->is_lt_16bpp) {
|
|
uint8_t *dst = frame->buf[0]->data;
|
|
int packed = (avctx->codec_tag & 0xFFFFFF) == MKTAG('B','I','T', 0);
|
|
int swap = avctx->codec_tag >> 24;
|
|
|
|
if (packed && swap) {
|
|
av_fast_padded_malloc(&context->bitstream_buf, &context->bitstream_buf_size, buf_size);
|
|
if (!context->bitstream_buf)
|
|
return AVERROR(ENOMEM);
|
|
if (swap == 16)
|
|
context->bbdsp.bswap16_buf(context->bitstream_buf, (const uint16_t*)buf, buf_size / 2);
|
|
else if (swap == 32)
|
|
context->bbdsp.bswap_buf(context->bitstream_buf, (const uint32_t*)buf, buf_size / 4);
|
|
else
|
|
return AVERROR_INVALIDDATA;
|
|
buf = context->bitstream_buf;
|
|
}
|
|
|
|
if (desc->flags & AV_PIX_FMT_FLAG_BE)
|
|
scale16be(avctx, dst, buf, buf_size, packed);
|
|
else
|
|
scale16le(avctx, dst, buf, buf_size, packed);
|
|
|
|
buf = dst;
|
|
} else if (need_copy) {
|
|
memcpy(frame->buf[0]->data, buf, buf_size);
|
|
buf = frame->buf[0]->data;
|
|
}
|
|
|
|
if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
|
|
avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
|
|
buf += buf_size - context->frame_size;
|
|
|
|
len = context->frame_size - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0);
|
|
if (buf_size < len && ((avctx->codec_tag & 0xFFFFFF) != MKTAG('B','I','T', 0) || !need_copy)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected frame_size %d\n", buf_size, len);
|
|
av_buffer_unref(&frame->buf[0]);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if ((res = av_image_fill_arrays(frame->data, frame->linesize,
|
|
buf, avctx->pix_fmt,
|
|
avctx->width, avctx->height, 1)) < 0) {
|
|
av_buffer_unref(&frame->buf[0]);
|
|
return res;
|
|
}
|
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
|
|
int pal_size;
|
|
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE,
|
|
&pal_size);
|
|
int ret;
|
|
|
|
if (pal_size != AVPALETTE_SIZE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", pal_size);
|
|
pal = NULL;
|
|
}
|
|
|
|
if (!context->palette)
|
|
context->palette = av_buffer_alloc(AVPALETTE_SIZE);
|
|
if (!context->palette) {
|
|
av_buffer_unref(&frame->buf[0]);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
ret = av_buffer_make_writable(&context->palette);
|
|
if (ret < 0) {
|
|
av_buffer_unref(&frame->buf[0]);
|
|
return ret;
|
|
}
|
|
|
|
if (pal) {
|
|
memcpy(context->palette->data, pal, AVPALETTE_SIZE);
|
|
frame->palette_has_changed = 1;
|
|
} else if (context->is_nut_pal8) {
|
|
int vid_size = avctx->width * avctx->height;
|
|
int pal_size = avpkt->size - vid_size;
|
|
|
|
if (avpkt->size > vid_size && pal_size <= AVPALETTE_SIZE) {
|
|
pal = avpkt->data + vid_size;
|
|
memcpy(context->palette->data, pal, pal_size);
|
|
frame->palette_has_changed = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((avctx->pix_fmt==AV_PIX_FMT_RGB24 ||
|
|
avctx->pix_fmt==AV_PIX_FMT_BGR24 ||
|
|
avctx->pix_fmt==AV_PIX_FMT_GRAY8 ||
|
|
avctx->pix_fmt==AV_PIX_FMT_RGB555LE ||
|
|
avctx->pix_fmt==AV_PIX_FMT_RGB555BE ||
|
|
avctx->pix_fmt==AV_PIX_FMT_RGB565LE ||
|
|
avctx->pix_fmt==AV_PIX_FMT_MONOWHITE ||
|
|
avctx->pix_fmt==AV_PIX_FMT_MONOBLACK ||
|
|
avctx->pix_fmt==AV_PIX_FMT_PAL8) &&
|
|
FFALIGN(frame->linesize[0], linesize_align) * avctx->height <= buf_size)
|
|
frame->linesize[0] = FFALIGN(frame->linesize[0], linesize_align);
|
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_NV12 && avctx->codec_tag == MKTAG('N', 'V', '1', '2') &&
|
|
FFALIGN(frame->linesize[0], linesize_align) * avctx->height +
|
|
FFALIGN(frame->linesize[1], linesize_align) * ((avctx->height + 1) / 2) <= buf_size) {
|
|
int la0 = FFALIGN(frame->linesize[0], linesize_align);
|
|
frame->data[1] += (la0 - frame->linesize[0]) * avctx->height;
|
|
frame->linesize[0] = la0;
|
|
frame->linesize[1] = FFALIGN(frame->linesize[1], linesize_align);
|
|
}
|
|
|
|
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]) {
|
|
av_buffer_unref(&frame->buf[0]);
|
|
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;
|
|
|
|
if (context->flip)
|
|
flip(avctx, frame);
|
|
|
|
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 *, frame->data[1], frame->data[2]);
|
|
|
|
if (avctx->codec_tag == AV_RL32("I420") && (avctx->width+1)*(avctx->height+1) * 3/2 == buf_size) {
|
|
frame->data[1] = frame->data[1] + (avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height;
|
|
frame->data[2] = frame->data[2] + ((avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height)*5/4;
|
|
}
|
|
|
|
if (avctx->codec_tag == AV_RL32("yuv2") &&
|
|
avctx->pix_fmt == AV_PIX_FMT_YUYV422) {
|
|
int x, y;
|
|
uint8_t *line = frame->data[0];
|
|
for (y = 0; y < avctx->height; y++) {
|
|
for (x = 0; x < avctx->width; x++)
|
|
line[2 * x + 1] ^= 0x80;
|
|
line += frame->linesize[0];
|
|
}
|
|
}
|
|
|
|
if (avctx->codec_tag == AV_RL32("b64a") &&
|
|
avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
|
|
uint8_t *dst = frame->data[0];
|
|
uint64_t v;
|
|
int x;
|
|
for (x = 0; x >> 3 < avctx->width * avctx->height; x += 8) {
|
|
v = AV_RB64(&dst[x]);
|
|
AV_WB64(&dst[x], v << 16 | v >> 48);
|
|
}
|
|
}
|
|
|
|
if (avctx->field_order > AV_FIELD_PROGRESSIVE) { /* we have interlaced material flagged in container */
|
|
frame->interlaced_frame = 1;
|
|
if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
|
|
frame->top_field_first = 1;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
return buf_size;
|
|
}
|
|
|
|
static av_cold int raw_close_decoder(AVCodecContext *avctx)
|
|
{
|
|
RawVideoContext *context = avctx->priv_data;
|
|
|
|
av_buffer_unref(&context->palette);
|
|
return 0;
|
|
}
|
|
|
|
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,
|
|
.priv_class = &rawdec_class,
|
|
.capabilities = AV_CODEC_CAP_PARAM_CHANGE,
|
|
};
|