769 lines
23 KiB
C
Executable file
769 lines
23 KiB
C
Executable file
/*
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* DPX (.dpx) image decoder
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* Copyright (c) 2009 Jimmy Christensen
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/timecode.h"
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#include "bytestream.h"
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#include "avcodec.h"
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#include "internal.h"
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enum DPX_TRC {
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DPX_TRC_USER_DEFINED = 0,
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DPX_TRC_PRINTING_DENSITY = 1,
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DPX_TRC_LINEAR = 2,
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DPX_TRC_LOGARITHMIC = 3,
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DPX_TRC_UNSPECIFIED_VIDEO = 4,
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DPX_TRC_SMPTE_274 = 5,
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DPX_TRC_ITU_R_709_4 = 6,
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DPX_TRC_ITU_R_601_625 = 7,
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DPX_TRC_ITU_R_601_525 = 8,
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DPX_TRC_SMPTE_170 = 9,
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DPX_TRC_ITU_R_624_4_PAL = 10,
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DPX_TRC_Z_LINEAR = 11,
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DPX_TRC_Z_HOMOGENEOUS = 12,
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};
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enum DPX_COL_SPEC {
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DPX_COL_SPEC_USER_DEFINED = 0,
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DPX_COL_SPEC_PRINTING_DENSITY = 1,
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/* 2 = N/A */
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/* 3 = N/A */
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DPX_COL_SPEC_UNSPECIFIED_VIDEO = 4,
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DPX_COL_SPEC_SMPTE_274 = 5,
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DPX_COL_SPEC_ITU_R_709_4 = 6,
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DPX_COL_SPEC_ITU_R_601_625 = 7,
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DPX_COL_SPEC_ITU_R_601_525 = 8,
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DPX_COL_SPEC_SMPTE_170 = 9,
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DPX_COL_SPEC_ITU_R_624_4_PAL = 10,
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/* 11 = N/A */
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/* 12 = N/A */
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};
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static unsigned int read16(const uint8_t **ptr, int is_big)
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{
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unsigned int temp;
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if (is_big) {
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temp = AV_RB16(*ptr);
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} else {
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temp = AV_RL16(*ptr);
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}
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*ptr += 2;
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return temp;
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}
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static unsigned int read32(const uint8_t **ptr, int is_big)
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{
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unsigned int temp;
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if (is_big) {
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temp = AV_RB32(*ptr);
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} else {
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temp = AV_RL32(*ptr);
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}
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*ptr += 4;
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return temp;
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}
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static uint16_t read10in32_gray(const uint8_t **ptr, uint32_t *lbuf,
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int *n_datum, int is_big, int shift)
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{
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uint16_t temp;
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if (*n_datum)
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(*n_datum)--;
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else {
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*lbuf = read32(ptr, is_big);
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*n_datum = 2;
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}
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temp = *lbuf >> shift & 0x3FF;
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*lbuf = *lbuf >> 10;
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return temp;
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}
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static uint16_t read10in32(const uint8_t **ptr, uint32_t *lbuf,
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int *n_datum, int is_big, int shift)
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{
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if (*n_datum)
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(*n_datum)--;
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else {
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*lbuf = read32(ptr, is_big);
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*n_datum = 2;
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}
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*lbuf = *lbuf << 10 | *lbuf >> shift & 0x3FFFFF;
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return *lbuf & 0x3FF;
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}
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static uint16_t read12in32(const uint8_t **ptr, uint32_t *lbuf,
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int *n_datum, int is_big)
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{
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if (*n_datum)
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(*n_datum)--;
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else {
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*lbuf = read32(ptr, is_big);
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*n_datum = 7;
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}
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switch (*n_datum){
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case 7: return *lbuf & 0xFFF;
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case 6: return (*lbuf >> 12) & 0xFFF;
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case 5: {
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uint32_t c = *lbuf >> 24;
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*lbuf = read32(ptr, is_big);
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c |= *lbuf << 8;
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return c & 0xFFF;
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}
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case 4: return (*lbuf >> 4) & 0xFFF;
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case 3: return (*lbuf >> 16) & 0xFFF;
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case 2: {
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uint32_t c = *lbuf >> 28;
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*lbuf = read32(ptr, is_big);
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c |= *lbuf << 4;
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return c & 0xFFF;
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}
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case 1: return (*lbuf >> 8) & 0xFFF;
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default: return *lbuf >> 20;
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}
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}
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static int decode_frame(AVCodecContext *avctx,
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void *data,
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int *got_frame,
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AVPacket *avpkt)
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{
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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AVFrame *const p = data;
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uint8_t *ptr[AV_NUM_DATA_POINTERS];
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uint32_t header_version, version = 0;
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char creator[101] = { 0 };
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char input_device[33] = { 0 };
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unsigned int offset;
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int magic_num, endian;
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int x, y, stride, i, j, ret;
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int w, h, bits_per_color, descriptor, elements, packing;
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int yuv, color_trc, color_spec;
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int encoding, need_align = 0, unpadded_10bit = 0;
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unsigned int rgbBuffer = 0;
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int n_datum = 0;
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if (avpkt->size <= 1634) {
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av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
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return AVERROR_INVALIDDATA;
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}
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magic_num = AV_RB32(buf);
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buf += 4;
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/* Check if the files "magic number" is "SDPX" which means it uses
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* big-endian or XPDS which is for little-endian files */
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if (magic_num == AV_RL32("SDPX")) {
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endian = 0;
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} else if (magic_num == AV_RB32("SDPX")) {
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endian = 1;
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} else {
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av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
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return AVERROR_INVALIDDATA;
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}
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offset = read32(&buf, endian);
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if (avpkt->size <= offset) {
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av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
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return AVERROR_INVALIDDATA;
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}
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header_version = read32(&buf, 0);
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if (header_version == MKTAG('V','1','.','0'))
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version = 1;
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if (header_version == MKTAG('V','2','.','0'))
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version = 2;
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if (!version)
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av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
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av_fourcc2str(header_version));
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// Check encryption
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buf = avpkt->data + 660;
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ret = read32(&buf, endian);
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if (ret != 0xFFFFFFFF) {
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avpriv_report_missing_feature(avctx, "Encryption");
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av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
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"not properly decode.\n");
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}
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// Need to end in 0x304 offset from start of file
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buf = avpkt->data + 0x304;
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w = read32(&buf, endian);
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h = read32(&buf, endian);
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if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
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return ret;
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// Need to end in 0x320 to read the descriptor
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buf += 20;
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descriptor = buf[0];
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color_trc = buf[1];
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color_spec = buf[2];
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// Need to end in 0x323 to read the bits per color
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buf += 3;
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avctx->bits_per_raw_sample =
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bits_per_color = buf[0];
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buf++;
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packing = read16(&buf, endian);
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encoding = read16(&buf, endian);
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if (encoding) {
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avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
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return AVERROR_PATCHWELCOME;
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}
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buf += 820;
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avctx->sample_aspect_ratio.num = read32(&buf, endian);
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avctx->sample_aspect_ratio.den = read32(&buf, endian);
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if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
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av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
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avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
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0x10000);
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else
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avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
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/* preferred frame rate from Motion-picture film header */
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if (offset >= 1724 + 4) {
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buf = avpkt->data + 1724;
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i = read32(&buf, endian);
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if(i && i != 0xFFFFFFFF) {
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AVRational q = av_d2q(av_int2float(i), 4096);
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if (q.num > 0 && q.den > 0)
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avctx->framerate = q;
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}
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}
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/* alternative frame rate from television header */
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if (offset >= 1940 + 4 &&
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!(avctx->framerate.num && avctx->framerate.den)) {
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buf = avpkt->data + 1940;
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i = read32(&buf, endian);
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if(i && i != 0xFFFFFFFF) {
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AVRational q = av_d2q(av_int2float(i), 4096);
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if (q.num > 0 && q.den > 0)
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avctx->framerate = q;
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}
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}
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/* SMPTE TC from television header */
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if (offset >= 1920 + 4) {
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uint32_t tc;
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uint32_t *tc_sd;
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char tcbuf[AV_TIMECODE_STR_SIZE];
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buf = avpkt->data + 1920;
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// read32 to native endian, av_bswap32 to opposite of native for
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// compatibility with av_timecode_make_smpte_tc_string2 etc
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tc = av_bswap32(read32(&buf, endian));
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if (i != 0xFFFFFFFF) {
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AVFrameSideData *tcside =
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av_frame_new_side_data(p, AV_FRAME_DATA_S12M_TIMECODE,
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sizeof(uint32_t) * 4);
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if (!tcside)
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return AVERROR(ENOMEM);
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tc_sd = (uint32_t*)tcside->data;
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tc_sd[0] = 1;
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tc_sd[1] = tc;
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av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
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tc_sd[1], 0, 0);
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av_dict_set(&p->metadata, "timecode", tcbuf, 0);
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}
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}
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/* color range from television header */
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if (offset >= 1964 + 4) {
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buf = avpkt->data + 1952;
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i = read32(&buf, endian);
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buf = avpkt->data + 1964;
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j = read32(&buf, endian);
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if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
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float minCV, maxCV;
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minCV = av_int2float(i);
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maxCV = av_int2float(j);
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if (bits_per_color >= 1 &&
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minCV == 0.0f && maxCV == ((1<<bits_per_color) - 1)) {
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avctx->color_range = AVCOL_RANGE_JPEG;
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} else if (bits_per_color >= 8 &&
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minCV == (1 <<(bits_per_color - 4)) &&
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maxCV == (235<<(bits_per_color - 8))) {
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avctx->color_range = AVCOL_RANGE_MPEG;
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}
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}
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}
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switch (descriptor) {
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case 1: // R
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case 2: // G
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case 3: // B
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case 4: // A
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case 6: // Y
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elements = 1;
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yuv = 1;
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break;
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case 50: // RGB
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elements = 3;
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yuv = 0;
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break;
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case 52: // ABGR
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case 51: // RGBA
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elements = 4;
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yuv = 0;
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break;
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case 100: // UYVY422
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elements = 2;
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yuv = 1;
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break;
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case 102: // UYV444
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elements = 3;
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yuv = 1;
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break;
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case 103: // UYVA4444
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elements = 4;
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yuv = 1;
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break;
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default:
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avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
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return AVERROR_PATCHWELCOME;
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}
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switch (bits_per_color) {
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case 8:
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stride = avctx->width * elements;
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break;
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case 10:
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if (!packing) {
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av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
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return -1;
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}
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stride = (avctx->width * elements + 2) / 3 * 4;
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break;
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case 12:
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stride = avctx->width * elements;
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if (packing) {
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stride *= 2;
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} else {
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stride *= 3;
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if (stride % 8) {
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stride /= 8;
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stride++;
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stride *= 8;
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}
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stride /= 2;
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}
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break;
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case 16:
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stride = 2 * avctx->width * elements;
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break;
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case 32:
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stride = 4 * avctx->width * elements;
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break;
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case 1:
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case 64:
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avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
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return AVERROR_PATCHWELCOME;
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default:
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return AVERROR_INVALIDDATA;
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}
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switch (color_trc) {
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case DPX_TRC_LINEAR:
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avctx->color_trc = AVCOL_TRC_LINEAR;
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break;
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case DPX_TRC_SMPTE_274:
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case DPX_TRC_ITU_R_709_4:
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avctx->color_trc = AVCOL_TRC_BT709;
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break;
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case DPX_TRC_ITU_R_601_625:
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case DPX_TRC_ITU_R_601_525:
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case DPX_TRC_SMPTE_170:
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avctx->color_trc = AVCOL_TRC_SMPTE170M;
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break;
|
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case DPX_TRC_ITU_R_624_4_PAL:
|
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avctx->color_trc = AVCOL_TRC_GAMMA28;
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break;
|
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case DPX_TRC_USER_DEFINED:
|
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case DPX_TRC_UNSPECIFIED_VIDEO:
|
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/* Nothing to do */
|
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break;
|
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default:
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av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
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"%d to color_trc.\n", color_trc);
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break;
|
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}
|
|
|
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switch (color_spec) {
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case DPX_COL_SPEC_SMPTE_274:
|
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case DPX_COL_SPEC_ITU_R_709_4:
|
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avctx->color_primaries = AVCOL_PRI_BT709;
|
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break;
|
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case DPX_COL_SPEC_ITU_R_601_625:
|
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case DPX_COL_SPEC_ITU_R_624_4_PAL:
|
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avctx->color_primaries = AVCOL_PRI_BT470BG;
|
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break;
|
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case DPX_COL_SPEC_ITU_R_601_525:
|
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case DPX_COL_SPEC_SMPTE_170:
|
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avctx->color_primaries = AVCOL_PRI_SMPTE170M;
|
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break;
|
|
case DPX_COL_SPEC_USER_DEFINED:
|
|
case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
|
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/* Nothing to do */
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
|
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"%d to color_primaries.\n", color_spec);
|
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break;
|
|
}
|
|
|
|
if (yuv) {
|
|
switch (color_spec) {
|
|
case DPX_COL_SPEC_SMPTE_274:
|
|
case DPX_COL_SPEC_ITU_R_709_4:
|
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avctx->colorspace = AVCOL_SPC_BT709;
|
|
break;
|
|
case DPX_COL_SPEC_ITU_R_601_625:
|
|
case DPX_COL_SPEC_ITU_R_624_4_PAL:
|
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avctx->colorspace = AVCOL_SPC_BT470BG;
|
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break;
|
|
case DPX_COL_SPEC_ITU_R_601_525:
|
|
case DPX_COL_SPEC_SMPTE_170:
|
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avctx->colorspace = AVCOL_SPC_SMPTE170M;
|
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break;
|
|
case DPX_COL_SPEC_USER_DEFINED:
|
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case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
|
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/* Nothing to do */
|
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break;
|
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default:
|
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av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
|
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"%d to colorspace.\n", color_spec);
|
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break;
|
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}
|
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} else {
|
|
avctx->colorspace = AVCOL_SPC_RGB;
|
|
}
|
|
|
|
// Table 3c: Runs will always break at scan line boundaries. Packing
|
|
// will always break to the next 32-bit word at scan-line boundaries.
|
|
// Unfortunately, the encoder produced invalid files, so attempt
|
|
// to detect it
|
|
need_align = FFALIGN(stride, 4);
|
|
if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
|
|
// Alignment seems unappliable, try without
|
|
if (stride*avctx->height + (int64_t)offset > avpkt->size) {
|
|
av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
|
|
return AVERROR_INVALIDDATA;
|
|
} else {
|
|
av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
|
|
"alignment.\n");
|
|
need_align = 0;
|
|
}
|
|
} else {
|
|
need_align -= stride;
|
|
stride = FFALIGN(stride, 4);
|
|
}
|
|
|
|
switch (1000 * descriptor + 10 * bits_per_color + endian) {
|
|
case 1081:
|
|
case 1080:
|
|
case 2081:
|
|
case 2080:
|
|
case 3081:
|
|
case 3080:
|
|
case 4081:
|
|
case 4080:
|
|
case 6081:
|
|
case 6080:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY8;
|
|
break;
|
|
case 6121:
|
|
case 6120:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY12;
|
|
break;
|
|
case 1320:
|
|
case 2320:
|
|
case 3320:
|
|
case 4320:
|
|
case 6320:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAYF32LE;
|
|
break;
|
|
case 1321:
|
|
case 2321:
|
|
case 3321:
|
|
case 4321:
|
|
case 6321:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAYF32BE;
|
|
break;
|
|
case 50081:
|
|
case 50080:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB24;
|
|
break;
|
|
case 52081:
|
|
case 52080:
|
|
avctx->pix_fmt = AV_PIX_FMT_ABGR;
|
|
break;
|
|
case 51081:
|
|
case 51080:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA;
|
|
break;
|
|
case 50100:
|
|
case 50101:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRP10;
|
|
break;
|
|
case 51100:
|
|
case 51101:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
|
|
break;
|
|
case 50120:
|
|
case 50121:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRP12;
|
|
break;
|
|
case 51120:
|
|
case 51121:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
|
|
break;
|
|
case 6100:
|
|
case 6101:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY10;
|
|
break;
|
|
case 6161:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
|
|
break;
|
|
case 6160:
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
|
|
break;
|
|
case 50161:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
|
|
break;
|
|
case 50160:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
|
|
break;
|
|
case 51161:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
|
|
break;
|
|
case 51160:
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
|
|
break;
|
|
case 50320:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRPF32LE;
|
|
break;
|
|
case 50321:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRPF32BE;
|
|
break;
|
|
case 51320:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAPF32LE;
|
|
break;
|
|
case 51321:
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAPF32BE;
|
|
break;
|
|
case 100081:
|
|
avctx->pix_fmt = AV_PIX_FMT_UYVY422;
|
|
break;
|
|
case 102081:
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
|
|
break;
|
|
case 103081:
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported format %d\n",
|
|
1000 * descriptor + 10 * bits_per_color + endian);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
ff_set_sar(avctx, avctx->sample_aspect_ratio);
|
|
|
|
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
|
|
return ret;
|
|
|
|
av_strlcpy(creator, avpkt->data + 160, 100);
|
|
creator[100] = '\0';
|
|
av_dict_set(&p->metadata, "Creator", creator, 0);
|
|
|
|
av_strlcpy(input_device, avpkt->data + 1556, 32);
|
|
input_device[32] = '\0';
|
|
av_dict_set(&p->metadata, "Input Device", input_device, 0);
|
|
|
|
// Some devices do not pad 10bit samples to whole 32bit words per row
|
|
if (!memcmp(input_device, "Scanity", 7) ||
|
|
!memcmp(creator, "Lasergraphics Inc.", 18)) {
|
|
unpadded_10bit = 1;
|
|
}
|
|
|
|
// Move pointer to offset from start of file
|
|
buf = avpkt->data + offset;
|
|
|
|
for (i=0; i<AV_NUM_DATA_POINTERS; i++)
|
|
ptr[i] = p->data[i];
|
|
|
|
switch (bits_per_color) {
|
|
case 10:
|
|
for (x = 0; x < avctx->height; x++) {
|
|
uint16_t *dst[4] = {(uint16_t*)ptr[0],
|
|
(uint16_t*)ptr[1],
|
|
(uint16_t*)ptr[2],
|
|
(uint16_t*)ptr[3]};
|
|
int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
|
|
for (y = 0; y < avctx->width; y++) {
|
|
if (elements >= 3)
|
|
*dst[2]++ = read10in32(&buf, &rgbBuffer,
|
|
&n_datum, endian, shift);
|
|
if (elements == 1)
|
|
*dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
|
|
&n_datum, endian, shift);
|
|
else
|
|
*dst[0]++ = read10in32(&buf, &rgbBuffer,
|
|
&n_datum, endian, shift);
|
|
if (elements >= 2)
|
|
*dst[1]++ = read10in32(&buf, &rgbBuffer,
|
|
&n_datum, endian, shift);
|
|
if (elements == 4)
|
|
*dst[3]++ =
|
|
read10in32(&buf, &rgbBuffer,
|
|
&n_datum, endian, shift);
|
|
}
|
|
if (!unpadded_10bit)
|
|
n_datum = 0;
|
|
for (i = 0; i < elements; i++)
|
|
ptr[i] += p->linesize[i];
|
|
}
|
|
break;
|
|
case 12:
|
|
for (x = 0; x < avctx->height; x++) {
|
|
uint16_t *dst[4] = {(uint16_t*)ptr[0],
|
|
(uint16_t*)ptr[1],
|
|
(uint16_t*)ptr[2],
|
|
(uint16_t*)ptr[3]};
|
|
int shift = packing == 1 ? 4 : 0;
|
|
for (y = 0; y < avctx->width; y++) {
|
|
if (packing) {
|
|
if (elements >= 3)
|
|
*dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
|
|
*dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
|
|
if (elements >= 2)
|
|
*dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
|
|
if (elements == 4)
|
|
*dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
|
|
} else {
|
|
if (elements >= 3)
|
|
*dst[2]++ = read12in32(&buf, &rgbBuffer,
|
|
&n_datum, endian);
|
|
*dst[0]++ = read12in32(&buf, &rgbBuffer,
|
|
&n_datum, endian);
|
|
if (elements >= 2)
|
|
*dst[1]++ = read12in32(&buf, &rgbBuffer,
|
|
&n_datum, endian);
|
|
if (elements == 4)
|
|
*dst[3]++ = read12in32(&buf, &rgbBuffer,
|
|
&n_datum, endian);
|
|
}
|
|
}
|
|
n_datum = 0;
|
|
for (i = 0; i < elements; i++)
|
|
ptr[i] += p->linesize[i];
|
|
// Jump to next aligned position
|
|
buf += need_align;
|
|
}
|
|
break;
|
|
case 32:
|
|
if (elements == 1) {
|
|
av_image_copy_plane(ptr[0], p->linesize[0],
|
|
buf, stride,
|
|
elements * avctx->width * 4, avctx->height);
|
|
} else {
|
|
for (y = 0; y < avctx->height; y++) {
|
|
ptr[0] = p->data[0] + y * p->linesize[0];
|
|
ptr[1] = p->data[1] + y * p->linesize[1];
|
|
ptr[2] = p->data[2] + y * p->linesize[2];
|
|
ptr[3] = p->data[3] + y * p->linesize[3];
|
|
for (x = 0; x < avctx->width; x++) {
|
|
AV_WN32(ptr[2], AV_RN32(buf));
|
|
AV_WN32(ptr[0], AV_RN32(buf + 4));
|
|
AV_WN32(ptr[1], AV_RN32(buf + 8));
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRAPF32BE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GBRAPF32LE) {
|
|
AV_WN32(ptr[3], AV_RN32(buf + 12));
|
|
buf += 4;
|
|
ptr[3] += 4;
|
|
}
|
|
|
|
buf += 12;
|
|
ptr[2] += 4;
|
|
ptr[0] += 4;
|
|
ptr[1] += 4;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 16:
|
|
elements *= 2;
|
|
case 8:
|
|
if ( avctx->pix_fmt == AV_PIX_FMT_YUVA444P
|
|
|| avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
|
|
for (x = 0; x < avctx->height; x++) {
|
|
ptr[0] = p->data[0] + x * p->linesize[0];
|
|
ptr[1] = p->data[1] + x * p->linesize[1];
|
|
ptr[2] = p->data[2] + x * p->linesize[2];
|
|
ptr[3] = p->data[3] + x * p->linesize[3];
|
|
for (y = 0; y < avctx->width; y++) {
|
|
*ptr[1]++ = *buf++;
|
|
*ptr[0]++ = *buf++;
|
|
*ptr[2]++ = *buf++;
|
|
if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
|
|
*ptr[3]++ = *buf++;
|
|
}
|
|
}
|
|
} else {
|
|
av_image_copy_plane(ptr[0], p->linesize[0],
|
|
buf, stride,
|
|
elements * avctx->width, avctx->height);
|
|
}
|
|
break;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
AVCodec ff_dpx_decoder = {
|
|
.name = "dpx",
|
|
.long_name = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_DPX,
|
|
.decode = decode_frame,
|
|
.capabilities = AV_CODEC_CAP_DR1,
|
|
};
|