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ffmpeg/libavcodec/dpx.c
Lynne 531ce713a0 dpxdec: add a Vulkan hwaccel
2025-11-26 15:16:43 +01:00

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/*
* DPX (.dpx) image decoder
* Copyright (c) 2009 Jimmy Christensen
*
* 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
*/
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "libavutil/imgutils.h"
#include "libavutil/timecode.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "dpx.h"
#include "thread.h"
#include "hwconfig.h"
#include "hwaccel_internal.h"
#include "config_components.h"
static unsigned int read16(const uint8_t **ptr, int is_big)
{
unsigned int temp;
if (is_big) {
temp = AV_RB16(*ptr);
} else {
temp = AV_RL16(*ptr);
}
*ptr += 2;
return temp;
}
static unsigned int read32(const uint8_t **ptr, int is_big)
{
unsigned int temp;
if (is_big) {
temp = AV_RB32(*ptr);
} else {
temp = AV_RL32(*ptr);
}
*ptr += 4;
return temp;
}
static uint16_t read10in32_gray(const uint8_t **ptr, uint32_t *lbuf,
int *n_datum, int is_big, int shift)
{
uint16_t temp;
if (*n_datum)
(*n_datum)--;
else {
*lbuf = read32(ptr, is_big);
*n_datum = 2;
}
temp = *lbuf >> shift & 0x3FF;
*lbuf = *lbuf >> 10;
return temp;
}
static uint16_t read10in32(const uint8_t **ptr, uint32_t *lbuf,
int *n_datum, int is_big, int shift)
{
if (*n_datum)
(*n_datum)--;
else {
*lbuf = read32(ptr, is_big);
*n_datum = 2;
}
*lbuf = *lbuf << 10 | *lbuf >> shift & 0x3FFFFF;
return *lbuf & 0x3FF;
}
static uint16_t read12in32(const uint8_t **ptr, uint32_t *lbuf,
int *n_datum, int is_big)
{
if (*n_datum)
(*n_datum)--;
else {
*lbuf = read32(ptr, is_big);
*n_datum = 7;
}
switch (*n_datum){
case 7: return *lbuf & 0xFFF;
case 6: return (*lbuf >> 12) & 0xFFF;
case 5: {
uint32_t c = *lbuf >> 24;
*lbuf = read32(ptr, is_big);
c |= *lbuf << 8;
return c & 0xFFF;
}
case 4: return (*lbuf >> 4) & 0xFFF;
case 3: return (*lbuf >> 16) & 0xFFF;
case 2: {
uint32_t c = *lbuf >> 28;
*lbuf = read32(ptr, is_big);
c |= *lbuf << 4;
return c & 0xFFF;
}
case 1: return (*lbuf >> 8) & 0xFFF;
default: return *lbuf >> 20;
}
}
static void unpack_frame(AVCodecContext *avctx, AVFrame *p, const uint8_t *buf,
int elements, int endian)
{
int i, x, y;
DPXDecContext *dpx = avctx->priv_data;
uint8_t *ptr[AV_NUM_DATA_POINTERS];
unsigned int rgbBuffer = 0;
int n_datum = 0;
for (i=0; i<AV_NUM_DATA_POINTERS; i++)
ptr[i] = p->data[i];
switch (avctx->bits_per_raw_sample) {
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 ? dpx->packing == 1 ? 22 : 20 : dpx->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 (!dpx->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 = dpx->packing == 1 ? 4 : 0;
for (y = 0; y < avctx->width; y++) {
if (dpx->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 += dpx->need_align;
}
break;
case 32:
if (elements == 1) {
av_image_copy_plane(ptr[0], p->linesize[0],
buf, dpx->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, dpx->stride,
elements * avctx->width, avctx->height);
}
break;
}
}
static enum AVPixelFormat get_pixel_format(AVCodecContext *avctx,
enum AVPixelFormat pix_fmt)
{
enum AVPixelFormat pix_fmts[] = {
#if CONFIG_DPX_VULKAN_HWACCEL
AV_PIX_FMT_VULKAN,
#endif
pix_fmt,
AV_PIX_FMT_NONE,
};
return ff_get_format(avctx, pix_fmts);
}
static int decode_frame(AVCodecContext *avctx, AVFrame *p,
int *got_frame, AVPacket *avpkt)
{
DPXDecContext *dpx = avctx->priv_data;
enum AVPixelFormat pix_fmt;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
uint32_t header_version, version = 0;
char creator[101] = { 0 };
char input_device[33] = { 0 };
unsigned int offset;
int magic_num;
int i, j, ret;
int w, h, descriptor;
int yuv, color_trc, color_spec;
int encoding;
if (avpkt->size <= 1634) {
av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
return AVERROR_INVALIDDATA;
}
magic_num = AV_RB32(buf);
buf += 4;
/* Check if the files "magic number" is "SDPX" which means it uses
* big-endian or XPDS which is for little-endian files */
if (magic_num == AV_RL32("SDPX")) {
dpx->endian = 0;
} else if (magic_num == AV_RB32("SDPX")) {
dpx->endian = 1;
} else {
av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
return AVERROR_INVALIDDATA;
}
offset = read32(&buf, dpx->endian);
if (avpkt->size <= offset) {
av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
return AVERROR_INVALIDDATA;
}
header_version = read32(&buf, 0);
if (header_version == MKTAG('V','1','.','0'))
version = 1;
if (header_version == MKTAG('V','2','.','0'))
version = 2;
if (!version)
av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
av_fourcc2str(header_version));
// Check encryption
buf = avpkt->data + 660;
ret = read32(&buf, dpx->endian);
if (ret != 0xFFFFFFFF) {
avpriv_report_missing_feature(avctx, "Encryption");
av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
"not properly decode.\n");
}
// Need to end in 0x304 offset from start of file
buf = avpkt->data + 0x304;
w = read32(&buf, dpx->endian);
h = read32(&buf, dpx->endian);
if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
return ret;
// Need to end in 0x320 to read the descriptor
buf += 20;
descriptor = buf[0];
color_trc = buf[1];
color_spec = buf[2];
// Need to end in 0x323 to read the bits per color
buf += 3;
avctx->bits_per_raw_sample = buf[0];
buf++;
dpx->packing = read16(&buf, dpx->endian);
encoding = read16(&buf, dpx->endian);
if (encoding) {
avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
return AVERROR_PATCHWELCOME;
}
if (avctx->bits_per_raw_sample > 31)
return AVERROR_INVALIDDATA;
buf += 820;
avctx->sample_aspect_ratio.num = read32(&buf, dpx->endian);
avctx->sample_aspect_ratio.den = read32(&buf, dpx->endian);
if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
0x10000);
else
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
/* preferred frame rate from Motion-picture film header */
if (offset >= 1724 + 4) {
buf = avpkt->data + 1724;
i = read32(&buf, dpx->endian);
if(i && i != 0xFFFFFFFF) {
AVRational q = av_d2q(av_int2float(i), 4096);
if (q.num > 0 && q.den > 0)
avctx->framerate = q;
}
}
/* alternative frame rate from television header */
if (offset >= 1940 + 4 &&
!(avctx->framerate.num && avctx->framerate.den)) {
buf = avpkt->data + 1940;
i = read32(&buf, dpx->endian);
if(i && i != 0xFFFFFFFF) {
AVRational q = av_d2q(av_int2float(i), 4096);
if (q.num > 0 && q.den > 0)
avctx->framerate = q;
}
}
/* SMPTE TC from television header */
if (offset >= 1920 + 4) {
uint32_t tc;
uint32_t *tc_sd;
char tcbuf[AV_TIMECODE_STR_SIZE];
buf = avpkt->data + 1920;
// read32 to native endian, av_bswap32 to opposite of native for
// compatibility with av_timecode_make_smpte_tc_string2 etc
tc = av_bswap32(read32(&buf, dpx->endian));
if (i != 0xFFFFFFFF) {
AVFrameSideData *tcside;
ret = ff_frame_new_side_data(avctx, p, AV_FRAME_DATA_S12M_TIMECODE,
sizeof(uint32_t) * 4, &tcside);
if (ret < 0)
return ret;
if (tcside) {
tc_sd = (uint32_t*)tcside->data;
tc_sd[0] = 1;
tc_sd[1] = tc;
av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
tc_sd[1], 0, 0);
av_dict_set(&p->metadata, "timecode", tcbuf, 0);
}
}
}
/* color range from television header */
if (offset >= 1964 + 4) {
buf = avpkt->data + 1952;
i = read32(&buf, dpx->endian);
buf = avpkt->data + 1964;
j = read32(&buf, dpx->endian);
if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
float minCV, maxCV;
minCV = av_int2float(i);
maxCV = av_int2float(j);
if (avctx->bits_per_raw_sample >= 1 &&
minCV == 0.0f && maxCV == ((1U<<avctx->bits_per_raw_sample) - 1)) {
avctx->color_range = AVCOL_RANGE_JPEG;
} else if (avctx->bits_per_raw_sample >= 8 &&
minCV == (1 <<(avctx->bits_per_raw_sample - 4)) &&
maxCV == (235<<(avctx->bits_per_raw_sample - 8))) {
avctx->color_range = AVCOL_RANGE_MPEG;
}
}
}
switch (descriptor) {
case 1: // R
case 2: // G
case 3: // B
case 4: // A
case 6: // Y
dpx->components = 1;
yuv = 1;
break;
case 50: // RGB
dpx->components = 3;
yuv = 0;
break;
case 52: // ABGR
case 51: // RGBA
dpx->components = 4;
yuv = 0;
break;
case 100: // UYVY422
dpx->components = 2;
yuv = 1;
break;
case 102: // UYV444
dpx->components = 3;
yuv = 1;
break;
case 103: // UYVA4444
dpx->components = 4;
yuv = 1;
break;
default:
avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
return AVERROR_PATCHWELCOME;
}
switch (avctx->bits_per_raw_sample) {
case 8:
dpx->stride = avctx->width * dpx->components;
break;
case 10:
if (!dpx->packing) {
av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
return -1;
}
dpx->stride = (avctx->width * dpx->components + 2) / 3 * 4;
break;
case 12:
dpx->stride = avctx->width * dpx->components;
if (dpx->packing) {
dpx->stride *= 2;
} else {
dpx->stride *= 3;
if (dpx->stride % 8) {
dpx->stride /= 8;
dpx->stride++;
dpx->stride *= 8;
}
dpx->stride /= 2;
}
break;
case 16:
dpx->stride = 2 * avctx->width * dpx->components;
break;
case 32:
dpx->stride = 4 * avctx->width * dpx->components;
break;
case 1:
case 64:
avpriv_report_missing_feature(avctx, "Depth %d", avctx->bits_per_raw_sample);
return AVERROR_PATCHWELCOME;
default:
return AVERROR_INVALIDDATA;
}
switch (color_trc) {
case DPX_TRC_LINEAR:
avctx->color_trc = AVCOL_TRC_LINEAR;
break;
case DPX_TRC_SMPTE_274:
case DPX_TRC_ITU_R_709_4:
avctx->color_trc = AVCOL_TRC_BT709;
break;
case DPX_TRC_ITU_R_601_625:
case DPX_TRC_ITU_R_601_525:
case DPX_TRC_SMPTE_170:
avctx->color_trc = AVCOL_TRC_SMPTE170M;
break;
case DPX_TRC_ITU_R_624_4_PAL:
avctx->color_trc = AVCOL_TRC_GAMMA28;
break;
case DPX_TRC_USER_DEFINED:
case DPX_TRC_UNSPECIFIED_VIDEO:
/* Nothing to do */
break;
default:
av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
"%d to color_trc.\n", color_trc);
break;
}
switch (color_spec) {
case DPX_COL_SPEC_SMPTE_274:
case DPX_COL_SPEC_ITU_R_709_4:
avctx->color_primaries = AVCOL_PRI_BT709;
break;
case DPX_COL_SPEC_ITU_R_601_625:
case DPX_COL_SPEC_ITU_R_624_4_PAL:
avctx->color_primaries = AVCOL_PRI_BT470BG;
break;
case DPX_COL_SPEC_ITU_R_601_525:
case DPX_COL_SPEC_SMPTE_170:
avctx->color_primaries = AVCOL_PRI_SMPTE170M;
break;
case DPX_COL_SPEC_USER_DEFINED:
case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
/* Nothing to do */
break;
default:
av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
"%d to color_primaries.\n", color_spec);
break;
}
if (yuv) {
switch (color_spec) {
case DPX_COL_SPEC_SMPTE_274:
case DPX_COL_SPEC_ITU_R_709_4:
avctx->colorspace = AVCOL_SPC_BT709;
break;
case DPX_COL_SPEC_ITU_R_601_625:
case DPX_COL_SPEC_ITU_R_624_4_PAL:
avctx->colorspace = AVCOL_SPC_BT470BG;
break;
case DPX_COL_SPEC_ITU_R_601_525:
case DPX_COL_SPEC_SMPTE_170:
avctx->colorspace = AVCOL_SPC_SMPTE170M;
break;
case DPX_COL_SPEC_USER_DEFINED:
case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
/* Nothing to do */
break;
default:
av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
"%d to colorspace.\n", color_spec);
break;
}
} else {
avctx->colorspace = AVCOL_SPC_RGB;
}
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)) {
if (avctx->bits_per_raw_sample == 10)
dpx->unpadded_10bit = 1;
}
// 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
// Also handle special case with unpadded content
dpx->need_align = FFALIGN(dpx->stride, 4);
if (dpx->need_align*avctx->height + (int64_t)offset > avpkt->size &&
(!dpx->unpadded_10bit || (avctx->width * avctx->height * dpx->components + 2) / 3 * 4 + (int64_t)offset > avpkt->size)) {
// Alignment seems unappliable, try without
if (dpx->stride*avctx->height + (int64_t)offset > avpkt->size || dpx->unpadded_10bit) {
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");
dpx->need_align = 0;
}
} else {
dpx->need_align -= dpx->stride;
dpx->stride = FFALIGN(dpx->stride, 4);
}
switch (1000 * descriptor + 10 * avctx->bits_per_raw_sample + dpx->endian) {
case 1081:
case 1080:
case 2081:
case 2080:
case 3081:
case 3080:
case 4081:
case 4080:
case 6081:
case 6080:
pix_fmt = AV_PIX_FMT_GRAY8;
break;
case 6121:
case 6120:
pix_fmt = AV_PIX_FMT_GRAY12;
break;
case 1320:
case 2320:
case 3320:
case 4320:
case 6320:
pix_fmt = AV_PIX_FMT_GRAYF32LE;
break;
case 1321:
case 2321:
case 3321:
case 4321:
case 6321:
pix_fmt = AV_PIX_FMT_GRAYF32BE;
break;
case 50081:
case 50080:
pix_fmt = AV_PIX_FMT_RGB24;
break;
case 52081:
case 52080:
pix_fmt = AV_PIX_FMT_ABGR;
break;
case 51081:
case 51080:
pix_fmt = AV_PIX_FMT_RGBA;
break;
case 50100:
case 50101:
pix_fmt = AV_PIX_FMT_GBRP10;
break;
case 51100:
case 51101:
pix_fmt = AV_PIX_FMT_GBRAP10;
break;
case 50120:
case 50121:
pix_fmt = AV_PIX_FMT_GBRP12;
break;
case 51120:
case 51121:
pix_fmt = AV_PIX_FMT_GBRAP12;
break;
case 6100:
case 6101:
pix_fmt = AV_PIX_FMT_GRAY10;
break;
case 6161:
pix_fmt = AV_PIX_FMT_GRAY16BE;
break;
case 6160:
pix_fmt = AV_PIX_FMT_GRAY16LE;
break;
case 50161:
pix_fmt = AV_PIX_FMT_RGB48BE;
break;
case 50160:
pix_fmt = AV_PIX_FMT_RGB48LE;
break;
case 51161:
pix_fmt = AV_PIX_FMT_RGBA64BE;
break;
case 51160:
pix_fmt = AV_PIX_FMT_RGBA64LE;
break;
case 50320:
pix_fmt = AV_PIX_FMT_GBRPF32LE;
break;
case 50321:
pix_fmt = AV_PIX_FMT_GBRPF32BE;
break;
case 51320:
pix_fmt = AV_PIX_FMT_GBRAPF32LE;
break;
case 51321:
pix_fmt = AV_PIX_FMT_GBRAPF32BE;
break;
case 100081:
pix_fmt = AV_PIX_FMT_UYVY422;
break;
case 102081:
pix_fmt = AV_PIX_FMT_YUV444P;
break;
case 103081:
pix_fmt = AV_PIX_FMT_YUVA444P;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported format %d\n",
1000 * descriptor + 10 * avctx->bits_per_raw_sample + dpx->endian);
return AVERROR_PATCHWELCOME;
}
if (pix_fmt != dpx->pix_fmt) {
dpx->pix_fmt = pix_fmt;
ret = get_pixel_format(avctx, pix_fmt);
if (ret < 0)
return ret;
avctx->pix_fmt = ret;
}
ff_set_sar(avctx, avctx->sample_aspect_ratio);
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
return ret;
// Move pointer to offset from start of file
buf = avpkt->data + offset;
dpx->frame = p;
/* Start */
if (avctx->hwaccel) {
const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
ret = ff_hwaccel_frame_priv_alloc(avctx, &dpx->hwaccel_picture_private);
if (ret < 0)
return ret;
ret = hwaccel->start_frame(avctx, avpkt->buf, buf, avpkt->size - offset);
if (ret < 0)
return ret;
ret = hwaccel->decode_slice(avctx, buf, avpkt->size - offset);
if (ret < 0)
return ret;
ret = hwaccel->end_frame(avctx);
if (ret < 0)
return ret;
av_refstruct_unref(&dpx->hwaccel_picture_private);
} else {
unpack_frame(avctx, p, buf, dpx->components, dpx->endian);
}
p->pict_type = AV_PICTURE_TYPE_I;
p->flags |= AV_FRAME_FLAG_KEY;
*got_frame = 1;
return buf_size;
}
#if HAVE_THREADS
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
{
DPXDecContext *ssrc = src->priv_data;
DPXDecContext *sdst = dst->priv_data;
sdst->pix_fmt = ssrc->pix_fmt;
return 0;
}
#endif
static av_cold int decode_end(AVCodecContext *avctx)
{
DPXDecContext *dpx = avctx->priv_data;
av_refstruct_unref(&dpx->hwaccel_picture_private);
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
DPXDecContext *dpx = avctx->priv_data;
dpx->pix_fmt = AV_PIX_FMT_NONE;
return 0;
}
const FFCodec ff_dpx_decoder = {
.p.name = "dpx",
CODEC_LONG_NAME("DPX (Digital Picture Exchange) image"),
.priv_data_size = sizeof(DPXDecContext),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_DPX,
FF_CODEC_DECODE_CB(decode_frame),
.init = decode_init,
.close = decode_end,
UPDATE_THREAD_CONTEXT(update_thread_context),
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.hw_configs = (const AVCodecHWConfigInternal *const []) {
#if CONFIG_DPX_VULKAN_HWACCEL
HWACCEL_VULKAN(dpx),
#endif
NULL
},
};
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