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ffmpeg.wasm-core
Commit 0ce033f8 authored by Anton Khirnov's avatar Anton Khirnov
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rawdec: cosmetics, reformat

parent b965cb90
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Showing with 68 additions and 58 deletions
libavcodec/rawdec.c
View file @ 0ce033f8
......@@ -32,8 +32,8 @@
typedef struct RawVideoContext {
uint32_t palette[AVPALETTE_COUNT];
unsigned char * buffer; /* block of memory for holding one frame */
int length; /* number of bytes in buffer */
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;
......@@ -46,7 +46,7 @@ static const PixelFormatTag pix_fmt_bps_avi[] = {
{ AV_PIX_FMT_RGB555, 16 },
{ AV_PIX_FMT_BGR24, 24 },
{ AV_PIX_FMT_RGB32, 32 },
{ AV_PIX_FMT_NONE, 0 },
{ AV_PIX_FMT_NONE, 0 },
};
static const PixelFormatTag pix_fmt_bps_mov[] = {
......@@ -60,10 +60,11 @@ static const PixelFormatTag pix_fmt_bps_mov[] = {
{ AV_PIX_FMT_RGB24, 24 },
{ AV_PIX_FMT_ARGB, 32 },
{ AV_PIX_FMT_MONOWHITE,33 },
{ AV_PIX_FMT_NONE, 0 },
{ AV_PIX_FMT_NONE, 0 },
};
static enum AVPixelFormat find_pix_fmt(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)
......@@ -77,20 +78,24 @@ 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 = 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);
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 = 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);
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->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;
......@@ -98,28 +103,30 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx)
context->pic.pict_type = AV_PICTURE_TYPE_I;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
avctx->coded_frame = &context->pic;
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->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){
picture->data[0] += picture->linesize[0] * (avctx->height-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 *got_frame,
AVPacket *avpkt)
static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
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 = data;
......@@ -127,71 +134,74 @@ static int raw_decode(AVCodecContext *avctx,
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 ? 256*4 : 0))
if (buf_size < context->length - (avctx->pix_fmt == AV_PIX_FMT_PAL8 ? 256 * 4 : 0))
return -1;
//2bpp and 4bpp raw in avi and mov (yes this is ugly ...)
if (context->buffer) {
int i;
uint8_t *dst = context->buffer;
buf_size = context->length - 256*4;
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;
buf_size = context->length - 256 * 4;
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;
} 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= dst;
}
buf = dst;
}
if(avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
buf += buf_size - context->length;
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->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->length) ||
(desc->flags & PIX_FMT_PSEUDOPAL)) {
frame->data[1] = context->palette;
}
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE,
NULL);
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 (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)
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'))
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) {
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;
for (y = 0; y < avctx->height; y++) {
for (x = 0; x < avctx->width; x++)
line[2 * x + 1] ^= 0x80;
line += picture->linesize[0];
}
}
......
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