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)
avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
ff_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==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 = FF_I_TYPE;
context->pic.key_frame = 1;
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 ))
context->flip=1;
return 0;
}
static int bmp_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
BMPContext *s = avctx->priv_data;
AVFrame * const p = &s->picture;
int n_bytes_image, n_bytes_per_row, n_bytes, i, n, hsize, ret;
const uint32_t *pal = NULL;
uint32_t palette256[256];
int pad_bytes_per_row, pal_entries = 0, compression = BMP_RGB;
int bit_count = avctx->bits_per_coded_sample;
uint8_t *ptr, *buf;
*p = *pict;
p->pict_type= AV_PICTURE_TYPE_I;
p->key_frame= 1;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_RGB444:
compression = BMP_BITFIELDS;
pal = rgb444_masks; // abuse pal to hold color masks
pal_entries = 3;
break;
case AV_PIX_FMT_RGB565:
compression = BMP_BITFIELDS;
pal = rgb565_masks; // abuse pal to hold color masks
pal_entries = 3;
break;
case AV_PIX_FMT_RGB8:
case AV_PIX_FMT_BGR8:
case AV_PIX_FMT_RGB4_BYTE:
case AV_PIX_FMT_BGR4_BYTE:
case AV_PIX_FMT_GRAY8:
av_assert1(bit_count == 8);
ff_set_systematic_pal2(palette256, avctx->pix_fmt);
pal = palette256;
break;
case AV_PIX_FMT_PAL8:
pal = (uint32_t *)p->data[1];
break;
case AV_PIX_FMT_MONOBLACK:
pal = monoblack_pal;
break;
}
if (pal && !pal_entries) pal_entries = 1 << bit_count;
n_bytes_per_row = ((int64_t)avctx->width * (int64_t)bit_count + 7LL) >> 3LL;
pad_bytes_per_row = (4 - n_bytes_per_row) & 3;
n_bytes_image = avctx->height * (n_bytes_per_row + pad_bytes_per_row);
// STRUCTURE.field refer to the MSVC documentation for BITMAPFILEHEADER
// and related pages.
#define SIZE_BITMAPFILEHEADER 14
#define SIZE_BITMAPINFOHEADER 40
hsize = SIZE_BITMAPFILEHEADER + SIZE_BITMAPINFOHEADER + (pal_entries << 2);
n_bytes = n_bytes_image + hsize;
if ((ret = ff_alloc_packet2(avctx, pkt, n_bytes)) < 0)
return ret;
buf = pkt->data;
bytestream_put_byte(&buf, 'B'); // BITMAPFILEHEADER.bfType
bytestream_put_byte(&buf, 'M'); // do.
bytestream_put_le32(&buf, n_bytes); // BITMAPFILEHEADER.bfSize
bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved1
bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved2
bytestream_put_le32(&buf, hsize); // BITMAPFILEHEADER.bfOffBits
bytestream_put_le32(&buf, SIZE_BITMAPINFOHEADER); // BITMAPINFOHEADER.biSize
bytestream_put_le32(&buf, avctx->width); // BITMAPINFOHEADER.biWidth
bytestream_put_le32(&buf, avctx->height); // BITMAPINFOHEADER.biHeight
bytestream_put_le16(&buf, 1); // BITMAPINFOHEADER.biPlanes
bytestream_put_le16(&buf, bit_count); // BITMAPINFOHEADER.biBitCount
bytestream_put_le32(&buf, compression); // BITMAPINFOHEADER.biCompression
bytestream_put_le32(&buf, n_bytes_image); // BITMAPINFOHEADER.biSizeImage
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biXPelsPerMeter
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biYPelsPerMeter
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrUsed
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrImportant
for (i = 0; i < pal_entries; i++)
bytestream_put_le32(&buf, pal[i] & 0xFFFFFF);
// BMP files are bottom-to-top so we start from the end...
ptr = p->data[0] + (avctx->height - 1) * p->linesize[0];
buf = pkt->data + hsize;
for(i = 0; i < avctx->height; i++) {
if (bit_count == 16) {
const uint16_t *src = (const uint16_t *) ptr;
uint16_t *dst = (uint16_t *) buf;
for(n = 0; n < avctx->width; n++)
AV_WL16(dst + n, src[n]);
} else {
memcpy(buf, ptr, n_bytes_per_row);
}
buf += n_bytes_per_row;
memset(buf, 0, pad_bytes_per_row);
buf += pad_bytes_per_row;
ptr -= p->linesize[0]; // ... and go back
}
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static int pcx_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
PCXContext *s = avctx->priv_data;
AVFrame *const pict = &s->picture;
const uint8_t *buf_end;
uint8_t *buf;
int bpp, nplanes, i, y, line_bytes, written, ret, max_pkt_size;
const uint32_t *pal = NULL;
uint32_t palette256[256];
const uint8_t *src;
*pict = *frame;
pict->pict_type = AV_PICTURE_TYPE_I;
pict->key_frame = 1;
if (avctx->width > 65535 || avctx->height > 65535) {
av_log(avctx, AV_LOG_ERROR, "image dimensions do not fit in 16 bits\n");
return -1;
}
switch (avctx->pix_fmt) {
case PIX_FMT_RGB24:
bpp = 8;
nplanes = 3;
break;
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
bpp = 8;
nplanes = 1;
ff_set_systematic_pal2(palette256, avctx->pix_fmt);
pal = palette256;
break;
case PIX_FMT_PAL8:
bpp = 8;
nplanes = 1;
pal = (uint32_t *)pict->data[1];
break;
case PIX_FMT_MONOBLACK:
bpp = 1;
nplanes = 1;
pal = monoblack_pal;
break;
default:
av_log(avctx, AV_LOG_ERROR, "unsupported pixfmt\n");
return -1;
}
line_bytes = (avctx->width * bpp + 7) >> 3;
line_bytes = (line_bytes + 1) & ~1;
max_pkt_size = 128 + avctx->height * 2 * line_bytes * nplanes + (pal ? 256*3 + 1 : 0);
if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0)
return ret;
buf = pkt->data;
buf_end = pkt->data + pkt->size;
bytestream_put_byte(&buf, 10); // manufacturer
bytestream_put_byte(&buf, 5); // version
bytestream_put_byte(&buf, 1); // encoding
bytestream_put_byte(&buf, bpp); // bits per pixel per plane
bytestream_put_le16(&buf, 0); // x min
bytestream_put_le16(&buf, 0); // y min
bytestream_put_le16(&buf, avctx->width - 1); // x max
bytestream_put_le16(&buf, avctx->height - 1); // y max
bytestream_put_le16(&buf, 0); // horizontal DPI
bytestream_put_le16(&buf, 0); // vertical DPI
for (i = 0; i < 16; i++)
bytestream_put_be24(&buf, pal ? pal[i] : 0);// palette (<= 16 color only)
bytestream_put_byte(&buf, 0); // reserved
bytestream_put_byte(&buf, nplanes); // number of planes
bytestream_put_le16(&buf, line_bytes); // scanline plane size in bytes
while (buf - pkt->data < 128)
*buf++= 0;
src = pict->data[0];
for (y = 0; y < avctx->height; y++) {
if ((written = pcx_rle_encode(buf, buf_end - buf,
src, line_bytes, nplanes)) < 0) {
av_log(avctx, AV_LOG_ERROR, "buffer too small\n");
return -1;
}
buf += written;
src += pict->linesize[0];
}
if (nplanes == 1 && bpp == 8) {
if (buf_end - buf < 257) {
av_log(avctx, AV_LOG_ERROR, "buffer too small\n");
return -1;
}
bytestream_put_byte(&buf, 12);
for (i = 0; i < 256; i++) {
bytestream_put_be24(&buf, pal[i]);
}
}
pkt->size = buf - pkt->data;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
BMPContext *s = avctx->priv_data;
AVFrame *pict = data;
AVFrame * const p= (AVFrame*)&s->picture;
int n_bytes_image, n_bytes_per_row, n_bytes, i, n, hsize;
const uint32_t *pal = NULL;
int pad_bytes_per_row, pal_entries = 0, compression = BMP_RGB;
int bit_count = avctx->bits_per_coded_sample;
uint8_t *ptr;
unsigned char* buf0 = buf;
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
switch (avctx->pix_fmt) {
case PIX_FMT_RGB565:
compression = BMP_BITFIELDS;
pal = rgb565_masks; // abuse pal to hold color masks
pal_entries = 3;
break;
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
ff_set_systematic_pal2((uint32_t*)p->data[1], avctx->pix_fmt);
case PIX_FMT_PAL8:
pal = (uint32_t *)p->data[1];
break;
case PIX_FMT_MONOBLACK:
pal = monoblack_pal;
break;
}
if (pal && !pal_entries) pal_entries = 1 << bit_count;
n_bytes_per_row = ((int64_t)avctx->width * (int64_t)bit_count + 7LL) >> 3LL;
pad_bytes_per_row = (4 - n_bytes_per_row) & 3;
n_bytes_image = avctx->height * (n_bytes_per_row + pad_bytes_per_row);
// STRUCTURE.field refer to the MSVC documentation for BITMAPFILEHEADER
// and related pages.
#define SIZE_BITMAPFILEHEADER 14
#define SIZE_BITMAPINFOHEADER 40
hsize = SIZE_BITMAPFILEHEADER + SIZE_BITMAPINFOHEADER + (pal_entries << 2);
n_bytes = n_bytes_image + hsize;
if(n_bytes>buf_size) {
av_log(avctx, AV_LOG_ERROR, "buf size too small (need %d, got %d)\n", n_bytes, buf_size);
return -1;
}
bytestream_put_byte(&buf, 'B'); // BITMAPFILEHEADER.bfType
bytestream_put_byte(&buf, 'M'); // do.
bytestream_put_le32(&buf, n_bytes); // BITMAPFILEHEADER.bfSize
bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved1
bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved2
bytestream_put_le32(&buf, hsize); // BITMAPFILEHEADER.bfOffBits
bytestream_put_le32(&buf, SIZE_BITMAPINFOHEADER); // BITMAPINFOHEADER.biSize
bytestream_put_le32(&buf, avctx->width); // BITMAPINFOHEADER.biWidth
bytestream_put_le32(&buf, avctx->height); // BITMAPINFOHEADER.biHeight
bytestream_put_le16(&buf, 1); // BITMAPINFOHEADER.biPlanes
bytestream_put_le16(&buf, bit_count); // BITMAPINFOHEADER.biBitCount
bytestream_put_le32(&buf, compression); // BITMAPINFOHEADER.biCompression
bytestream_put_le32(&buf, n_bytes_image); // BITMAPINFOHEADER.biSizeImage
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biXPelsPerMeter
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biYPelsPerMeter
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrUsed
bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrImportant
for (i = 0; i < pal_entries; i++)
bytestream_put_le32(&buf, pal[i] & 0xFFFFFF);
// BMP files are bottom-to-top so we start from the end...
ptr = p->data[0] + (avctx->height - 1) * p->linesize[0];
buf = buf0 + hsize;
for(i = 0; i < avctx->height; i++) {
if (bit_count == 16) {
const uint16_t *src = (const uint16_t *) ptr;
uint16_t *dst = (uint16_t *) buf;
for(n = 0; n < avctx->width; n++)
AV_WL16(dst + n, src[n]);
} else {
memcpy(buf, ptr, n_bytes_per_row);
}
buf += n_bytes_per_row;
memset(buf, 0, pad_bytes_per_row);
buf += pad_bytes_per_row;
ptr -= p->linesize[0]; // ... and go back
}
return n_bytes;
}
