/*
- * IFF PBM/ILBM bitmap decoder
+ * IFF ACBM/DEEP/ILBM/PBM bitmap decoder
* Copyright (c) 2010 Peter Ross <pross@xvid.org>
* Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
- * IFF PBM/ILBM bitmap decoder
+ * IFF ACBM/DEEP/ILBM/PBM bitmap decoder
*/
#include "libavutil/imgutils.h"
#include "get_bits.h"
#include "internal.h"
+// TODO: masking bits
+typedef enum {
+ MASK_NONE,
+ MASK_HAS_MASK,
+ MASK_HAS_TRANSPARENT_COLOR,
+ MASK_LASSO
+} mask_type;
+
typedef struct {
AVFrame frame;
int planesize;
uint8_t * planebuf;
+ uint8_t * ham_buf; ///< temporary buffer for planar to chunky conversation
+ uint32_t *ham_palbuf; ///< HAM decode table
+ uint32_t *mask_buf; ///< temporary buffer for palette indices
+ uint32_t *mask_palbuf; ///< masking palette table
+ unsigned compression; ///< delta compression method used
+ unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
+ unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
+ unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
+ unsigned transparency; ///< TODO: transparency color index in palette
+ unsigned masking; ///< TODO: masking method used
int init; // 1 if buffer and palette data already initialized, 0 otherwise
+ int16_t tvdc[16]; ///< TVDC lookup table
} IffContext;
#define LUT8_PART(plane, v) \
*/
static int cmap_read_palette(AVCodecContext *avctx, uint32_t *pal)
{
+ IffContext *s = avctx->priv_data;
int count, i;
+ const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata);
+ int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
if (avctx->bits_per_coded_sample > 8) {
- av_log(avctx, AV_LOG_ERROR, "bit_per_coded_sample > 8 not supported\n");
+ av_log(avctx, AV_LOG_ERROR, "bits_per_coded_sample > 8 not supported\n");
return AVERROR_INVALIDDATA;
}
count = 1 << avctx->bits_per_coded_sample;
// If extradata is smaller than actually needed, fill the remaining with black.
- count = FFMIN(avctx->extradata_size / 3, count);
+ count = FFMIN(palette_size / 3, count);
if (count) {
for (i=0; i < count; i++) {
- pal[i] = 0xFF000000 | AV_RB24( avctx->extradata + i*3 );
+ pal[i] = 0xFF000000 | AV_RB24(palette + i*3);
+ }
+ if (s->flags && count >= 32) { // EHB
+ for (i = 0; i < 32; i++)
+ pal[i + 32] = 0xFF000000 | (AV_RB24(palette + i*3) & 0xFEFEFE) >> 1;
+ count = FFMAX(count, 64);
}
} else { // Create gray-scale color palette for bps < 8
count = 1 << avctx->bits_per_coded_sample;
pal[i] = 0xFF000000 | gray2rgb((i * 255) >> avctx->bits_per_coded_sample);
}
}
+ if (s->masking == MASK_HAS_MASK) {
+ memcpy(pal + (1 << avctx->bits_per_coded_sample), pal, count * 4);
+ for (i = 0; i < count; i++)
+ pal[i] &= 0xFFFFFF;
+ } else if (s->masking == MASK_HAS_TRANSPARENT_COLOR &&
+ s->transparency < 1 << avctx->bits_per_coded_sample)
+ pal[s->transparency] &= 0xFFFFFF;
+ return 0;
+}
+
+/**
+ * Extracts the IFF extra context and updates internal
+ * decoder structures.
+ *
+ * @param avctx the AVCodecContext where to extract extra context to
+ * @param avpkt the AVPacket to extract extra context from or NULL to use avctx
+ * @return 0 in case of success, a negative error code otherwise
+ */
+static int extract_header(AVCodecContext *const avctx,
+ const AVPacket *const avpkt) {
+ const uint8_t *buf;
+ unsigned buf_size;
+ IffContext *s = avctx->priv_data;
+ int i, palette_size;
+
+ if (avctx->extradata_size < 2) {
+ av_log(avctx, AV_LOG_ERROR, "not enough extradata\n");
+ return AVERROR_INVALIDDATA;
+ }
+ palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
+
+ if (avpkt) {
+ int image_size;
+ if (avpkt->size < 2)
+ return AVERROR_INVALIDDATA;
+ image_size = avpkt->size - AV_RB16(avpkt->data);
+ buf = avpkt->data;
+ buf_size = bytestream_get_be16(&buf);
+ if (buf_size <= 1 || image_size <= 1) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid image size received: %u -> image data offset: %d\n",
+ buf_size, image_size);
+ return AVERROR_INVALIDDATA;
+ }
+ } else {
+ buf = avctx->extradata;
+ buf_size = bytestream_get_be16(&buf);
+ if (buf_size <= 1 || palette_size < 0) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid palette size received: %u -> palette data offset: %d\n",
+ buf_size, palette_size);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+
+ if (buf_size >= 41) {
+ s->compression = bytestream_get_byte(&buf);
+ s->bpp = bytestream_get_byte(&buf);
+ s->ham = bytestream_get_byte(&buf);
+ s->flags = bytestream_get_byte(&buf);
+ s->transparency = bytestream_get_be16(&buf);
+ s->masking = bytestream_get_byte(&buf);
+ for (i = 0; i < 16; i++)
+ s->tvdc[i] = bytestream_get_be16(&buf);
+
+ if (s->masking == MASK_HAS_MASK) {
+ if (s->bpp >= 8 && !s->ham) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB32;
+ av_freep(&s->mask_buf);
+ av_freep(&s->mask_palbuf);
+ s->mask_buf = av_malloc((s->planesize * 32) + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->mask_buf)
+ return AVERROR(ENOMEM);
+ if (s->bpp > 16) {
+ av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp);
+ av_freep(&s->mask_buf);
+ return AVERROR(ENOMEM);
+ }
+ s->mask_palbuf = av_malloc((2 << s->bpp) * sizeof(uint32_t) + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->mask_palbuf) {
+ av_freep(&s->mask_buf);
+ return AVERROR(ENOMEM);
+ }
+ }
+ s->bpp++;
+ } else if (s->masking != MASK_NONE && s->masking != MASK_HAS_TRANSPARENT_COLOR) {
+ av_log(avctx, AV_LOG_ERROR, "Masking not supported\n");
+ return AVERROR_PATCHWELCOME;
+ }
+ if (!s->bpp || s->bpp > 32) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid number of bitplanes: %u\n", s->bpp);
+ return AVERROR_INVALIDDATA;
+ } else if (s->ham >= 8) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham);
+ return AVERROR_INVALIDDATA;
+ }
+
+ av_freep(&s->ham_buf);
+ av_freep(&s->ham_palbuf);
+
+ if (s->ham) {
+ int i, count = FFMIN(palette_size / 3, 1 << s->ham);
+ int ham_count;
+ const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata);
+
+ s->ham_buf = av_malloc((s->planesize * 8) + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->ham_buf)
+ return AVERROR(ENOMEM);
+
+ ham_count = 8 * (1 << s->ham);
+ s->ham_palbuf = av_malloc((ham_count << !!(s->masking == MASK_HAS_MASK)) * sizeof (uint32_t) + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->ham_palbuf) {
+ av_freep(&s->ham_buf);
+ return AVERROR(ENOMEM);
+ }
+
+ if (count) { // HAM with color palette attached
+ // prefill with black and palette and set HAM take direct value mask to zero
+ memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof (uint32_t));
+ for (i=0; i < count; i++) {
+ s->ham_palbuf[i*2+1] = 0xFF000000 | AV_RL24(palette + i*3);
+ }
+ count = 1 << s->ham;
+ } else { // HAM with grayscale color palette
+ count = 1 << s->ham;
+ for (i=0; i < count; i++) {
+ s->ham_palbuf[i*2] = 0xFF000000; // take direct color value from palette
+ s->ham_palbuf[i*2+1] = 0xFF000000 | av_le2ne32(gray2rgb((i * 255) >> s->ham));
+ }
+ }
+ for (i=0; i < count; i++) {
+ uint32_t tmp = i << (8 - s->ham);
+ tmp |= tmp >> s->ham;
+ s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; // just modify blue color component
+ s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; // just modify red color component
+ s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; // just modify green color component
+ s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16;
+ s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp;
+ s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8;
+ }
+ if (s->masking == MASK_HAS_MASK) {
+ for (i = 0; i < ham_count; i++)
+ s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000;
+ }
+ }
+ }
+
return 0;
}
int err;
if (avctx->bits_per_coded_sample <= 8) {
- avctx->pix_fmt = (avctx->bits_per_coded_sample < 8 ||
- avctx->extradata_size) ? AV_PIX_FMT_PAL8
- : AV_PIX_FMT_GRAY8;
+ int palette_size;
+
+ if (avctx->extradata_size >= 2)
+ palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
+ else
+ palette_size = 0;
+ avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) ||
+ (avctx->extradata_size >= 2 && palette_size) ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
} else if (avctx->bits_per_coded_sample <= 32) {
- avctx->pix_fmt = AV_PIX_FMT_BGR32;
+ if (avctx->codec_tag == MKTAG('R','G','B','8')) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB32;
+ } else if (avctx->codec_tag == MKTAG('R','G','B','N')) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB444;
+ } else if (avctx->codec_tag != MKTAG('D','E','E','P')) {
+ if (avctx->bits_per_coded_sample == 24) {
+ avctx->pix_fmt = AV_PIX_FMT_0BGR32;
+ } else if (avctx->bits_per_coded_sample == 32) {
+ avctx->pix_fmt = AV_PIX_FMT_BGR32;
+ } else {
+ av_log_ask_for_sample(avctx, "unknown bits_per_coded_sample\n");
+ return AVERROR_PATCHWELCOME;
+ }
+ }
} else {
return AVERROR_INVALIDDATA;
}
if (!s->planebuf)
return AVERROR(ENOMEM);
- s->frame.reference = 1;
+ s->bpp = avctx->bits_per_coded_sample;
+ avcodec_get_frame_defaults(&s->frame);
+
+ if ((err = extract_header(avctx, NULL)) < 0)
+ return err;
+ s->frame.reference = 3;
return 0;
}
static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane)
{
const uint64_t *lut = plane8_lut[plane];
+ if (plane >= 8) {
+ av_log(NULL, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n");
+ return;
+ }
do {
uint64_t v = AV_RN64A(dst) | lut[*buf++];
AV_WN64A(dst, v);
} while (--buf_size);
}
+#define DECODE_HAM_PLANE32(x) \
+ first = buf[x] << 1; \
+ second = buf[(x)+1] << 1; \
+ delta &= pal[first++]; \
+ delta |= pal[first]; \
+ dst[x] = delta; \
+ delta &= pal[second++]; \
+ delta |= pal[second]; \
+ dst[(x)+1] = delta
+
+/**
+ * Converts one line of HAM6/8-encoded chunky buffer to 24bpp.
+ *
+ * @param dst the destination 24bpp buffer
+ * @param buf the source 8bpp chunky buffer
+ * @param pal the HAM decode table
+ * @param buf_size the plane size in bytes
+ */
+static void decode_ham_plane32(uint32_t *dst, const uint8_t *buf,
+ const uint32_t *const pal, unsigned buf_size)
+{
+ uint32_t delta = pal[1]; /* first palette entry */
+ do {
+ uint32_t first, second;
+ DECODE_HAM_PLANE32(0);
+ DECODE_HAM_PLANE32(2);
+ DECODE_HAM_PLANE32(4);
+ DECODE_HAM_PLANE32(6);
+ buf += 8;
+ dst += 8;
+ } while (--buf_size);
+}
+
+static void lookup_pal_indicies(uint32_t *dst, const uint32_t *buf,
+ const uint32_t *const pal, unsigned width)
+{
+ do {
+ *dst++ = pal[*buf++];
+ } while (--width);
+}
+
/**
* Decode one complete byterun1 encoded line.
*
return buf - buf_start;
}
-static int decode_frame_ilbm(AVCodecContext *avctx,
- void *data, int *got_frame,
- AVPacket *avpkt)
+#define DECODE_RGBX_COMMON(type) \
+ if (!length) { \
+ length = bytestream2_get_byte(gb); \
+ if (!length) { \
+ length = bytestream2_get_be16(gb); \
+ if (!length) \
+ return; \
+ } \
+ } \
+ for (i = 0; i < length; i++) { \
+ *(type *)(dst + y*linesize + x * sizeof(type)) = pixel; \
+ x += 1; \
+ if (x >= width) { \
+ y += 1; \
+ if (y >= height) \
+ return; \
+ x = 0; \
+ } \
+ }
+
+/**
+ * Decode RGB8 buffer
+ * @param[out] dst Destination buffer
+ * @param width Width of destination buffer (pixels)
+ * @param height Height of destination buffer (pixels)
+ * @param linesize Line size of destination buffer (bytes)
+ */
+static void decode_rgb8(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize)
{
- IffContext *s = avctx->priv_data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- const uint8_t *buf_end = buf+buf_size;
- int y, plane, res;
+ int x = 0, y = 0, i, length;
+ while (bytestream2_get_bytes_left(gb) >= 4) {
+ uint32_t pixel = 0xFF000000 | bytestream2_get_be24(gb);
+ length = bytestream2_get_byte(gb) & 0x7F;
+ DECODE_RGBX_COMMON(uint32_t)
+ }
+}
- if (s->init) {
- if ((res = avctx->reget_buffer(avctx, &s->frame)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return res;
- }
- } else if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return res;
- } else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt != AV_PIX_FMT_GRAY8) {
- if ((res = cmap_read_palette(avctx, (uint32_t*)s->frame.data[1])) < 0)
- return res;
+/**
+ * Decode RGBN buffer
+ * @param[out] dst Destination buffer
+ * @param width Width of destination buffer (pixels)
+ * @param height Height of destination buffer (pixels)
+ * @param linesize Line size of destination buffer (bytes)
+ */
+static void decode_rgbn(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize)
+{
+ int x = 0, y = 0, i, length;
+ while (bytestream2_get_bytes_left(gb) >= 2) {
+ uint32_t pixel = bytestream2_get_be16u(gb);
+ length = pixel & 0x7;
+ pixel >>= 4;
+ DECODE_RGBX_COMMON(uint16_t)
}
- s->init = 1;
+}
- if (avctx->codec_tag == MKTAG('I','L','B','M')) { // interleaved
- if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
- for(y = 0; y < avctx->height; y++ ) {
- uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
- memset(row, 0, avctx->width);
- for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
- decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane);
- buf += s->planesize;
+/**
+ * Decode DEEP RLE 32-bit buffer
+ * @param[out] dst Destination buffer
+ * @param[in] src Source buffer
+ * @param src_size Source buffer size (bytes)
+ * @param width Width of destination buffer (pixels)
+ * @param height Height of destination buffer (pixels)
+ * @param linesize Line size of destination buffer (bytes)
+ */
+static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize)
+{
+ const uint8_t *src_end = src + src_size;
+ int x = 0, y = 0, i;
+ while (src + 5 <= src_end) {
+ int opcode;
+ opcode = *(int8_t *)src++;
+ if (opcode >= 0) {
+ int size = opcode + 1;
+ for (i = 0; i < size; i++) {
+ int length = FFMIN(size - i, width);
+ memcpy(dst + y*linesize + x * 4, src, length * 4);
+ src += length * 4;
+ x += length;
+ i += length;
+ if (x >= width) {
+ x = 0;
+ y += 1;
+ if (y >= height)
+ return;
}
}
- } else { // AV_PIX_FMT_BGR32
- for(y = 0; y < avctx->height; y++ ) {
- uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
- memset(row, 0, avctx->width << 2);
- for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
- decodeplane32((uint32_t *) row, buf, FFMIN(s->planesize, buf_end - buf), plane);
- buf += s->planesize;
+ } else {
+ int size = -opcode + 1;
+ uint32_t pixel = AV_RN32(src);
+ for (i = 0; i < size; i++) {
+ *(uint32_t *)(dst + y*linesize + x * 4) = pixel;
+ x += 1;
+ if (x >= width) {
+ x = 0;
+ y += 1;
+ if (y >= height)
+ return;
}
}
+ src += 4;
+ }
+ }
+}
+
+/**
+ * Decode DEEP TVDC 32-bit buffer
+ * @param[out] dst Destination buffer
+ * @param[in] src Source buffer
+ * @param src_size Source buffer size (bytes)
+ * @param width Width of destination buffer (pixels)
+ * @param height Height of destination buffer (pixels)
+ * @param linesize Line size of destination buffer (bytes)
+ * @param[int] tvdc TVDC lookup table
+ */
+static void decode_deep_tvdc32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize, const int16_t *tvdc)
+{
+ int x = 0, y = 0, plane = 0;
+ int8_t pixel = 0;
+ int i, j;
+
+ for (i = 0; i < src_size * 2;) {
+#define GETNIBBLE ((i & 1) ? (src[i>>1] & 0xF) : (src[i>>1] >> 4))
+ int d = tvdc[GETNIBBLE];
+ i++;
+ if (d) {
+ pixel += d;
+ dst[y * linesize + x*4 + plane] = pixel;
+ x++;
+ } else {
+ if (i >= src_size * 2)
+ return;
+ d = GETNIBBLE + 1;
+ i++;
+ d = FFMIN(d, width - x);
+ for (j = 0; j < d; j++) {
+ dst[y * linesize + x*4 + plane] = pixel;
+ x++;
+ }
}
- } else if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { // IFF-PBM
- for(y = 0; y < avctx->height; y++ ) {
- uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
- memcpy(row, buf, FFMIN(avctx->width, buf_end - buf));
- buf += avctx->width + (avctx->width % 2); // padding if odd
+ if (x >= width) {
+ plane++;
+ if (plane >= 4) {
+ y++;
+ if (y >= height)
+ return;
+ plane = 0;
+ }
+ x = 0;
+ pixel = 0;
+ i = (i + 1) & ~1;
}
}
+}
- *got_frame = 1;
- *(AVFrame*)data = s->frame;
- return buf_size;
+static int unsupported(AVCodecContext *avctx)
+{
+ IffContext *s = avctx->priv_data;
+ av_log_ask_for_sample(avctx, "unsupported bitmap (compression %i, bpp %i, ham %i)\n", s->compression, s->bpp, s->ham);
+ return AVERROR_INVALIDDATA;
}
-static int decode_frame_byterun1(AVCodecContext *avctx,
+static int decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
IffContext *s = avctx->priv_data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
+ const uint8_t *buf = avpkt->size >= 2 ? avpkt->data + AV_RB16(avpkt->data) : NULL;
+ const int buf_size = avpkt->size >= 2 ? avpkt->size - AV_RB16(avpkt->data) : 0;
const uint8_t *buf_end = buf+buf_size;
int y, plane, res;
+ GetByteContext gb;
+ if ((res = extract_header(avctx, avpkt)) < 0)
+ return res;
if (s->init) {
if ((res = avctx->reget_buffer(avctx, &s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
} else if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return res;
- } else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt != AV_PIX_FMT_GRAY8) {
+ } else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt == AV_PIX_FMT_PAL8) {
if ((res = cmap_read_palette(avctx, (uint32_t*)s->frame.data[1])) < 0)
return res;
+ } else if (avctx->pix_fmt == AV_PIX_FMT_RGB32 && avctx->bits_per_coded_sample <= 8) {
+ if ((res = cmap_read_palette(avctx, s->mask_palbuf)) < 0)
+ return res;
}
s->init = 1;
- if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved
- if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
- for(y = 0; y < avctx->height ; y++ ) {
- uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
- memset(row, 0, avctx->width);
- for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
- buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
- decodeplane8(row, s->planebuf, s->planesize, plane);
+ switch (s->compression) {
+ case 0:
+ if (avctx->codec_tag == MKTAG('A','C','B','M')) {
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
+ memset(s->frame.data[0], 0, avctx->height * s->frame.linesize[0]);
+ for (plane = 0; plane < s->bpp; plane++) {
+ for(y = 0; y < avctx->height && buf < buf_end; y++ ) {
+ uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
+ decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane);
+ buf += s->planesize;
+ }
+ }
+ } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32
+ memset(s->frame.data[0], 0, avctx->height * s->frame.linesize[0]);
+ for(y = 0; y < avctx->height; y++) {
+ uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
+ memset(s->ham_buf, 0, s->planesize * 8);
+ for (plane = 0; plane < s->bpp; plane++) {
+ const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize;
+ if (start >= buf_end)
+ break;
+ decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane);
+ }
+ decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
+ }
+ } else
+ return unsupported(avctx);
+ } else if (avctx->codec_tag == MKTAG('D','E','E','P')) {
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+ int raw_width = avctx->width * (av_get_bits_per_pixel(desc) >> 3);
+ int x;
+ for(y = 0; y < avctx->height && buf < buf_end; y++ ) {
+ uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
+ memcpy(row, buf, FFMIN(raw_width, buf_end - buf));
+ buf += raw_width;
+ if (avctx->pix_fmt == AV_PIX_FMT_BGR32) {
+ for(x = 0; x < avctx->width; x++)
+ row[4 * x + 3] = row[4 * x + 3] & 0xF0 | (row[4 * x + 3] >> 4);
}
}
- } else { //AV_PIX_FMT_BGR32
- for(y = 0; y < avctx->height ; y++ ) {
- uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
- memset(row, 0, avctx->width << 2);
- for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
- buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
- decodeplane32((uint32_t *) row, s->planebuf, s->planesize, plane);
+ } else if (avctx->codec_tag == MKTAG('I','L','B','M')) { // interleaved
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
+ for(y = 0; y < avctx->height; y++ ) {
+ uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
+ memset(row, 0, avctx->width);
+ for (plane = 0; plane < s->bpp && buf < buf_end; plane++) {
+ decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane);
+ buf += s->planesize;
+ }
+ }
+ } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32
+ for (y = 0; y < avctx->height; y++) {
+ uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
+ memset(s->ham_buf, 0, s->planesize * 8);
+ for (plane = 0; plane < s->bpp && buf < buf_end; plane++) {
+ decodeplane8(s->ham_buf, buf, FFMIN(s->planesize, buf_end - buf), plane);
+ buf += s->planesize;
+ }
+ decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
+ }
+ } else { // AV_PIX_FMT_BGR32
+ for(y = 0; y < avctx->height; y++ ) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ memset(row, 0, avctx->width << 2);
+ for (plane = 0; plane < s->bpp && buf < buf_end; plane++) {
+ decodeplane32((uint32_t *) row, buf, FFMIN(s->planesize, buf_end - buf), plane);
+ buf += s->planesize;
+ }
}
}
+ } else if (avctx->codec_tag == MKTAG('P','B','M',' ')) { // IFF-PBM
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
+ for(y = 0; y < avctx->height && buf_end > buf; y++ ) {
+ uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
+ memcpy(row, buf, FFMIN(avctx->width, buf_end - buf));
+ buf += avctx->width + (avctx->width % 2); // padding if odd
+ }
+ } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32
+ for (y = 0; y < avctx->height && buf_end > buf; y++) {
+ uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
+ memcpy(s->ham_buf, buf, FFMIN(avctx->width, buf_end - buf));
+ buf += avctx->width + (avctx->width & 1); // padding if odd
+ decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
+ }
+ } else
+ return unsupported(avctx);
}
- } else {
- for(y = 0; y < avctx->height ; y++ ) {
- uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
- buf += decode_byterun(row, avctx->width, buf, buf_end);
+ break;
+ case 1:
+ if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
+ for(y = 0; y < avctx->height ; y++ ) {
+ uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
+ memset(row, 0, avctx->width);
+ for (plane = 0; plane < s->bpp; plane++) {
+ buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
+ decodeplane8(row, s->planebuf, s->planesize, plane);
+ }
+ }
+ } else if (avctx->bits_per_coded_sample <= 8) { //8-bit (+ mask) to AV_PIX_FMT_BGR32
+ for (y = 0; y < avctx->height ; y++ ) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ memset(s->mask_buf, 0, avctx->width * sizeof(uint32_t));
+ for (plane = 0; plane < s->bpp; plane++) {
+ buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
+ decodeplane32(s->mask_buf, s->planebuf, s->planesize, plane);
+ }
+ lookup_pal_indicies((uint32_t *) row, s->mask_buf, s->mask_palbuf, avctx->width);
+ }
+ } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32
+ for (y = 0; y < avctx->height ; y++) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ memset(s->ham_buf, 0, s->planesize * 8);
+ for (plane = 0; plane < s->bpp; plane++) {
+ buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
+ decodeplane8(s->ham_buf, s->planebuf, s->planesize, plane);
+ }
+ decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
+ }
+ } else { //AV_PIX_FMT_BGR32
+ for(y = 0; y < avctx->height ; y++ ) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ memset(row, 0, avctx->width << 2);
+ for (plane = 0; plane < s->bpp; plane++) {
+ buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
+ decodeplane32((uint32_t *) row, s->planebuf, s->planesize, plane);
+ }
+ }
+ }
+ } else if (avctx->codec_tag == MKTAG('P','B','M',' ')) { // IFF-PBM
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
+ for(y = 0; y < avctx->height ; y++ ) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ buf += decode_byterun(row, avctx->width, buf, buf_end);
+ }
+ } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32
+ for (y = 0; y < avctx->height ; y++) {
+ uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
+ buf += decode_byterun(s->ham_buf, avctx->width, buf, buf_end);
+ decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
+ }
+ } else
+ return unsupported(avctx);
+ } else if (avctx->codec_tag == MKTAG('D','E','E','P')) { // IFF-DEEP
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+ if (av_get_bits_per_pixel(desc) == 32)
+ decode_deep_rle32(s->frame.data[0], buf, buf_size, avctx->width, avctx->height, s->frame.linesize[0]);
+ else
+ return unsupported(avctx);
}
+ break;
+ case 4:
+ bytestream2_init(&gb, buf, buf_size);
+ if (avctx->codec_tag == MKTAG('R','G','B','8'))
+ decode_rgb8(&gb, s->frame.data[0], avctx->width, avctx->height, s->frame.linesize[0]);
+ else if (avctx->codec_tag == MKTAG('R','G','B','N'))
+ decode_rgbn(&gb, s->frame.data[0], avctx->width, avctx->height, s->frame.linesize[0]);
+ else
+ return unsupported(avctx);
+ break;
+ case 5:
+ if (avctx->codec_tag == MKTAG('D','E','E','P')) {
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+ if (av_get_bits_per_pixel(desc) == 32)
+ decode_deep_tvdc32(s->frame.data[0], buf, buf_size, avctx->width, avctx->height, s->frame.linesize[0], s->tvdc);
+ else
+ return unsupported(avctx);
+ } else
+ return unsupported(avctx);
+ break;
+ default:
+ return unsupported(avctx);
}
*got_frame = 1;
if (s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);
av_freep(&s->planebuf);
+ av_freep(&s->ham_buf);
+ av_freep(&s->ham_palbuf);
return 0;
}
+#if CONFIG_IFF_ILBM_DECODER
AVCodec ff_iff_ilbm_decoder = {
- .name = "iff_ilbm",
+ .name = "iff",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_IFF_ILBM,
.priv_data_size = sizeof(IffContext),
.init = decode_init,
.close = decode_end,
- .decode = decode_frame_ilbm,
+ .decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("IFF ILBM"),
+ .long_name = NULL_IF_CONFIG_SMALL("IFF"),
};
-
+#endif
+#if CONFIG_IFF_BYTERUN1_DECODER
AVCodec ff_iff_byterun1_decoder = {
- .name = "iff_byterun1",
+ .name = "iff",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_IFF_BYTERUN1,
.priv_data_size = sizeof(IffContext),
.init = decode_init,
.close = decode_end,
- .decode = decode_frame_byterun1,
+ .decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("IFF ByteRun1"),
+ .long_name = NULL_IF_CONFIG_SMALL("IFF"),
};
+#endif
projects / ffmpeg / blobdiff