mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
6.3 KiB
137 lines
6.3 KiB
/* |
|
* Copyright (c) 2022 Michael Niedermayer |
|
* |
|
* 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 "bsf.h" |
|
#include "bsf_internal.h" |
|
#include "libavutil/colorspace.h" |
|
#include "libavutil/intreadwrite.h" |
|
#include "libavutil/opt.h" |
|
|
|
typedef struct DVErrorMarkerContext { |
|
const AVClass *class; |
|
uint8_t color_rgba[4]; |
|
int sta; |
|
uint8_t marked_block[76]; |
|
} DVErrorMarkerContext; |
|
|
|
static void setdc(uint8_t *b, const uint8_t color_rgba[4], int cblocks, int y_step, int v_step, int u_step) { |
|
for (int i=0; i<4; i++) { |
|
b[0] = RGB_TO_Y_JPEG(color_rgba[0], color_rgba[1],color_rgba[2]) + 128; |
|
b[1] = 0x06; |
|
b += y_step; |
|
} |
|
for (int i=0; i<cblocks; i++) { |
|
b[0] = RGB_TO_V_JPEG(color_rgba[0], color_rgba[1],color_rgba[2]) - 128; |
|
b[1] = 0x16; |
|
b += v_step; |
|
} |
|
for (int i=0; i<cblocks; i++) { |
|
b[0] = RGB_TO_U_JPEG(color_rgba[0], color_rgba[1],color_rgba[2]) - 128; |
|
b[1] = 0x16; |
|
b += u_step; |
|
} |
|
} |
|
|
|
static int dv_error_marker_init(AVBSFContext *ctx) |
|
{ |
|
DVErrorMarkerContext *s = ctx->priv_data; |
|
|
|
memset(s->marked_block, -1, 76); |
|
setdc(s->marked_block, s->color_rgba, 1, 14, 10, 10); |
|
setdc(s->marked_block, s->color_rgba, 2, 10, 10, 8); |
|
|
|
return 0; |
|
} |
|
|
|
static int dv_error_marker_filter(AVBSFContext *ctx, AVPacket *pkt) |
|
{ |
|
DVErrorMarkerContext *s = ctx->priv_data; |
|
int ret = ff_bsf_get_packet_ref(ctx, pkt); |
|
uint8_t *p; |
|
int writable = 0; |
|
int stamask = s->sta; |
|
int match_count = 0; |
|
|
|
if (ret < 0) |
|
return ret; |
|
|
|
p = pkt->data; |
|
for(int i = 0; i < pkt->size - 79; i+=80) { |
|
// see page 44-46 or section 5.5 of http://web.archive.org/web/20060927044735/http://www.smpte.org/smpte_store/standards/pdf/s314m.pdf. |
|
if ((p[i] >> 4) == 9 && ((stamask >> (p[i+3] >> 4))&1)) { |
|
if (!writable) { |
|
ret = av_packet_make_writable(pkt); |
|
if (ret < 0) { |
|
av_packet_unref(pkt); |
|
return ret; |
|
} |
|
writable = 1; |
|
p = pkt->data; |
|
} |
|
memcpy(p+i+4, s->marked_block, 76); |
|
match_count ++; |
|
} |
|
} |
|
av_log(ctx, AV_LOG_DEBUG, "%8"PRId64": Replaced %5d blocks by color %X\n", pkt->pts, match_count, AV_RB32(s->color_rgba)); |
|
|
|
return 0; |
|
} |
|
|
|
#define OFFSET(x) offsetof(DVErrorMarkerContext, x) |
|
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) |
|
static const AVOption options[] = { |
|
{ "color" , "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "yellow"}, 0, 0, FLAGS }, |
|
{ "sta" , "specify which error status value to match" |
|
, OFFSET(sta ), AV_OPT_TYPE_FLAGS, {.i64 = 0xFFFE}, 0, 0xFFFF, FLAGS, "sta" }, |
|
{ "ok" , "No error, no concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0001}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Aa" , "No error, concealment from previous frame type a",0, AV_OPT_TYPE_CONST, {.i64 = 0x0004}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Ba" , "No error, concealment from next frame type a", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0010}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Ca" , "No error, unspecified concealment type a", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0040}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "erri" , "Error with inserted code, No concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0080}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "erru" , "Error with unidentified pos, No concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0x8000}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "err" , "Error, No concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0x8080}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Ab" , "No error, concealment from previous frame type b",0, AV_OPT_TYPE_CONST, {.i64 = 0x0400}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Bb" , "No error, concealment from next frame type b", 0, AV_OPT_TYPE_CONST, {.i64 = 0x1000}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "Cb" , "No error, unspecified concealment type b", 0, AV_OPT_TYPE_CONST, {.i64 = 0x4000}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "A" , "No error, concealment from previous frame", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0404}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "B" , "No error, concealment from next frame", 0, AV_OPT_TYPE_CONST, {.i64 = 0x1010}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "C" , "No error, unspecified concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0x4040}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "a" , "No error, concealment type a", 0, AV_OPT_TYPE_CONST, {.i64 = 0x0054}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "b" , "No error, concealment type b", 0, AV_OPT_TYPE_CONST, {.i64 = 0x5400}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "res" , "Reserved", 0, AV_OPT_TYPE_CONST, {.i64 = 0x2B2A}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "notok" , "Error or concealment", 0, AV_OPT_TYPE_CONST, {.i64 = 0xD4D4}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ "notres" , "Not reserved", 0, AV_OPT_TYPE_CONST, {.i64 = 0xD4D5}, 0, 0xFFFF, FLAGS, "sta"}, |
|
{ NULL }, |
|
}; |
|
|
|
static const AVClass dv_error_marker_class = { |
|
.class_name = "dv_error_marker", |
|
.option = options, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
}; |
|
|
|
const FFBitStreamFilter ff_dv_error_marker_bsf = { |
|
.p.name = "dv_error_marker", |
|
.p.codec_ids = (const enum AVCodecID []){ AV_CODEC_ID_DVVIDEO, AV_CODEC_ID_NONE }, |
|
.p.priv_class = &dv_error_marker_class, |
|
.priv_data_size = sizeof(DVErrorMarkerContext), |
|
.init = dv_error_marker_init, |
|
.filter = dv_error_marker_filter, |
|
};
|
|
|