mirror of https://git.ffmpeg.org/ffmpeg.git
534 lines
17 KiB
C
534 lines
17 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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,
|
|
* 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
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/common.h"
|
|
#include "libavutil/opt.h"
|
|
|
|
#include "bsf.h"
|
|
#include "cbs.h"
|
|
#include "cbs_h264.h"
|
|
#include "h264.h"
|
|
#include "h264_sei.h"
|
|
|
|
enum {
|
|
PASS,
|
|
INSERT,
|
|
REMOVE,
|
|
};
|
|
|
|
typedef struct H264MetadataContext {
|
|
const AVClass *class;
|
|
|
|
CodedBitstreamContext *cbc;
|
|
CodedBitstreamFragment access_unit;
|
|
|
|
H264RawAUD aud_nal;
|
|
H264RawSEI sei_nal;
|
|
|
|
int aud;
|
|
|
|
AVRational sample_aspect_ratio;
|
|
|
|
int video_format;
|
|
int video_full_range_flag;
|
|
int colour_primaries;
|
|
int transfer_characteristics;
|
|
int matrix_coefficients;
|
|
|
|
int chroma_sample_loc_type;
|
|
|
|
AVRational tick_rate;
|
|
int fixed_frame_rate_flag;
|
|
|
|
int crop_left;
|
|
int crop_right;
|
|
int crop_top;
|
|
int crop_bottom;
|
|
|
|
const char *sei_user_data;
|
|
int sei_first_au;
|
|
|
|
int delete_filler;
|
|
} H264MetadataContext;
|
|
|
|
|
|
static int h264_metadata_update_sps(AVBSFContext *bsf,
|
|
H264RawSPS *sps)
|
|
{
|
|
H264MetadataContext *ctx = bsf->priv_data;
|
|
int need_vui = 0;
|
|
int crop_unit_x, crop_unit_y;
|
|
|
|
if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
|
|
// Table E-1.
|
|
static const AVRational sar_idc[] = {
|
|
{ 0, 0 }, // Unspecified (never written here).
|
|
{ 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
|
|
{ 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
|
|
{ 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
|
|
{ 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
|
|
};
|
|
int num, den, i;
|
|
|
|
av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
|
|
ctx->sample_aspect_ratio.den, 65535);
|
|
|
|
for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
|
|
if (num == sar_idc[i].num &&
|
|
den == sar_idc[i].den)
|
|
break;
|
|
}
|
|
if (i == FF_ARRAY_ELEMS(sar_idc)) {
|
|
sps->vui.aspect_ratio_idc = 255;
|
|
sps->vui.sar_width = num;
|
|
sps->vui.sar_height = den;
|
|
} else {
|
|
sps->vui.aspect_ratio_idc = i;
|
|
}
|
|
sps->vui.aspect_ratio_info_present_flag = 1;
|
|
need_vui = 1;
|
|
}
|
|
|
|
#define SET_OR_INFER(field, value, present_flag, infer) do { \
|
|
if (value >= 0) { \
|
|
field = value; \
|
|
need_vui = 1; \
|
|
} else if (!present_flag) \
|
|
field = infer; \
|
|
} while (0)
|
|
|
|
if (ctx->video_format >= 0 ||
|
|
ctx->video_full_range_flag >= 0 ||
|
|
ctx->colour_primaries >= 0 ||
|
|
ctx->transfer_characteristics >= 0 ||
|
|
ctx->matrix_coefficients >= 0) {
|
|
|
|
SET_OR_INFER(sps->vui.video_format, ctx->video_format,
|
|
sps->vui.video_signal_type_present_flag, 5);
|
|
|
|
SET_OR_INFER(sps->vui.video_full_range_flag,
|
|
ctx->video_full_range_flag,
|
|
sps->vui.video_signal_type_present_flag, 0);
|
|
|
|
if (ctx->colour_primaries >= 0 ||
|
|
ctx->transfer_characteristics >= 0 ||
|
|
ctx->matrix_coefficients >= 0) {
|
|
|
|
SET_OR_INFER(sps->vui.colour_primaries,
|
|
ctx->colour_primaries,
|
|
sps->vui.colour_description_present_flag, 2);
|
|
|
|
SET_OR_INFER(sps->vui.transfer_characteristics,
|
|
ctx->transfer_characteristics,
|
|
sps->vui.colour_description_present_flag, 2);
|
|
|
|
SET_OR_INFER(sps->vui.matrix_coefficients,
|
|
ctx->matrix_coefficients,
|
|
sps->vui.colour_description_present_flag, 2);
|
|
|
|
sps->vui.colour_description_present_flag = 1;
|
|
}
|
|
sps->vui.video_signal_type_present_flag = 1;
|
|
need_vui = 1;
|
|
}
|
|
|
|
if (ctx->chroma_sample_loc_type >= 0) {
|
|
sps->vui.chroma_sample_loc_type_top_field =
|
|
ctx->chroma_sample_loc_type;
|
|
sps->vui.chroma_sample_loc_type_bottom_field =
|
|
ctx->chroma_sample_loc_type;
|
|
sps->vui.chroma_loc_info_present_flag = 1;
|
|
need_vui = 1;
|
|
}
|
|
|
|
if (ctx->tick_rate.num && ctx->tick_rate.den) {
|
|
int num, den;
|
|
|
|
av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
|
|
UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
|
|
|
|
sps->vui.time_scale = num;
|
|
sps->vui.num_units_in_tick = den;
|
|
|
|
sps->vui.timing_info_present_flag = 1;
|
|
need_vui = 1;
|
|
}
|
|
SET_OR_INFER(sps->vui.fixed_frame_rate_flag,
|
|
ctx->fixed_frame_rate_flag,
|
|
sps->vui.timing_info_present_flag, 0);
|
|
|
|
if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
|
|
crop_unit_x = 1;
|
|
crop_unit_y = 2 - sps->frame_mbs_only_flag;
|
|
} else {
|
|
crop_unit_x = 1 + (sps->chroma_format_idc < 3);
|
|
crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
|
|
(2 - sps->frame_mbs_only_flag);
|
|
}
|
|
#define CROP(border, unit) do { \
|
|
if (ctx->crop_ ## border >= 0) { \
|
|
if (ctx->crop_ ## border % unit != 0) { \
|
|
av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
|
|
"must be a multiple of %d.\n", #border, unit); \
|
|
return AVERROR(EINVAL); \
|
|
} \
|
|
sps->frame_crop_ ## border ## _offset = \
|
|
ctx->crop_ ## border / unit; \
|
|
sps->frame_cropping_flag = 1; \
|
|
} \
|
|
} while (0)
|
|
CROP(left, crop_unit_x);
|
|
CROP(right, crop_unit_x);
|
|
CROP(top, crop_unit_y);
|
|
CROP(bottom, crop_unit_y);
|
|
#undef CROP
|
|
|
|
if (need_vui)
|
|
sps->vui_parameters_present_flag = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *out)
|
|
{
|
|
H264MetadataContext *ctx = bsf->priv_data;
|
|
AVPacket *in = NULL;
|
|
CodedBitstreamFragment *au = &ctx->access_unit;
|
|
int err, i, j, has_sps;
|
|
|
|
err = ff_bsf_get_packet(bsf, &in);
|
|
if (err < 0)
|
|
goto fail;
|
|
|
|
err = ff_cbs_read_packet(ctx->cbc, au, in);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (au->nb_units == 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
|
|
err = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
// If an AUD is present, it must be the first NAL unit.
|
|
if (au->units[0].type == H264_NAL_AUD) {
|
|
if (ctx->aud == REMOVE)
|
|
ff_cbs_delete_unit(ctx->cbc, au, 0);
|
|
} else {
|
|
if (ctx->aud == INSERT) {
|
|
static const int primary_pic_type_table[] = {
|
|
0x084, // 2, 7
|
|
0x0a5, // 0, 2, 5, 7
|
|
0x0e7, // 0, 1, 2, 5, 6, 7
|
|
0x210, // 4, 9
|
|
0x318, // 3, 4, 8, 9
|
|
0x294, // 2, 4, 7, 9
|
|
0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
|
|
0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
|
|
};
|
|
int primary_pic_type_mask = 0xff;
|
|
H264RawAUD *aud = &ctx->aud_nal;
|
|
|
|
for (i = 0; i < au->nb_units; i++) {
|
|
if (au->units[i].type == H264_NAL_SLICE ||
|
|
au->units[i].type == H264_NAL_IDR_SLICE) {
|
|
H264RawSlice *slice = au->units[i].content;
|
|
for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
|
|
if (!(primary_pic_type_table[j] &
|
|
(1 << slice->header.slice_type)))
|
|
primary_pic_type_mask &= ~(1 << j);
|
|
}
|
|
}
|
|
}
|
|
for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
|
|
if (primary_pic_type_mask & (1 << j))
|
|
break;
|
|
if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
|
|
av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
|
|
"invalid slice types?\n");
|
|
err = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
aud->nal_unit_header.nal_unit_type = H264_NAL_AUD;
|
|
aud->primary_pic_type = j;
|
|
|
|
err = ff_cbs_insert_unit_content(ctx->cbc, au,
|
|
0, H264_NAL_AUD, aud, NULL);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
|
|
has_sps = 0;
|
|
for (i = 0; i < au->nb_units; i++) {
|
|
if (au->units[i].type == H264_NAL_SPS) {
|
|
err = h264_metadata_update_sps(bsf, au->units[i].content);
|
|
if (err < 0)
|
|
goto fail;
|
|
has_sps = 1;
|
|
}
|
|
}
|
|
|
|
// Only insert the SEI in access units containing SPSs, and also
|
|
// unconditionally in the first access unit we ever see.
|
|
if (ctx->sei_user_data && (has_sps || !ctx->sei_first_au)) {
|
|
H264RawSEIPayload payload = {
|
|
.payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED,
|
|
};
|
|
H264RawSEIUserDataUnregistered *udu =
|
|
&payload.payload.user_data_unregistered;
|
|
|
|
ctx->sei_first_au = 1;
|
|
|
|
for (i = j = 0; j < 32 && ctx->sei_user_data[i]; i++) {
|
|
int c, v;
|
|
c = ctx->sei_user_data[i];
|
|
if (c == '-') {
|
|
continue;
|
|
} else if (av_isxdigit(c)) {
|
|
c = av_tolower(c);
|
|
v = (c <= '9' ? c - '0' : c - 'a' + 10);
|
|
} else {
|
|
goto invalid_user_data;
|
|
}
|
|
if (i & 1)
|
|
udu->uuid_iso_iec_11578[j / 2] |= v;
|
|
else
|
|
udu->uuid_iso_iec_11578[j / 2] = v << 4;
|
|
++j;
|
|
}
|
|
if (j == 32 && ctx->sei_user_data[i] == '+') {
|
|
size_t len = strlen(ctx->sei_user_data + i + 1);
|
|
|
|
udu->data_ref = av_buffer_alloc(len + 1);
|
|
if (!udu->data_ref) {
|
|
err = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
udu->data = udu->data_ref->data;
|
|
udu->data_length = len + 1;
|
|
memcpy(udu->data, ctx->sei_user_data + i + 1, len + 1);
|
|
|
|
payload.payload_size = 16 + udu->data_length;
|
|
|
|
err = ff_cbs_h264_add_sei_message(ctx->cbc, au, &payload);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
|
|
"message to access unit.\n");
|
|
goto fail;
|
|
}
|
|
|
|
} else {
|
|
invalid_user_data:
|
|
av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
|
|
"must be \"UUID+string\".\n");
|
|
err = AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
if (ctx->delete_filler) {
|
|
for (i = 0; i < au->nb_units; i++) {
|
|
if (au->units[i].type == H264_NAL_FILLER_DATA) {
|
|
// Filler NAL units.
|
|
err = ff_cbs_delete_unit(ctx->cbc, au, i);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to delete "
|
|
"filler NAL.\n");
|
|
goto fail;
|
|
}
|
|
--i;
|
|
continue;
|
|
}
|
|
|
|
if (au->units[i].type == H264_NAL_SEI) {
|
|
// Filler SEI messages.
|
|
H264RawSEI *sei = au->units[i].content;
|
|
|
|
for (j = 0; j < sei->payload_count; j++) {
|
|
if (sei->payload[j].payload_type ==
|
|
H264_SEI_TYPE_FILLER_PAYLOAD) {
|
|
err = ff_cbs_h264_delete_sei_message(ctx->cbc, au,
|
|
&au->units[i], j);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to delete "
|
|
"filler SEI message.\n");
|
|
goto fail;
|
|
}
|
|
// Renumbering might have happened, start again at
|
|
// the same NAL unit position.
|
|
--i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
err = ff_cbs_write_packet(ctx->cbc, out, au);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
|
|
goto fail;
|
|
}
|
|
|
|
err = av_packet_copy_props(out, in);
|
|
if (err < 0)
|
|
goto fail;
|
|
|
|
err = 0;
|
|
fail:
|
|
ff_cbs_fragment_uninit(ctx->cbc, au);
|
|
|
|
av_packet_free(&in);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int h264_metadata_init(AVBSFContext *bsf)
|
|
{
|
|
H264MetadataContext *ctx = bsf->priv_data;
|
|
CodedBitstreamFragment *au = &ctx->access_unit;
|
|
int err, i;
|
|
|
|
err = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_H264, bsf);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (bsf->par_in->extradata) {
|
|
err = ff_cbs_read_extradata(ctx->cbc, au, bsf->par_in);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < au->nb_units; i++) {
|
|
if (au->units[i].type == H264_NAL_SPS) {
|
|
err = h264_metadata_update_sps(bsf, au->units[i].content);
|
|
if (err < 0)
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
err = ff_cbs_write_extradata(ctx->cbc, bsf->par_out, au);
|
|
if (err < 0) {
|
|
av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
err = 0;
|
|
fail:
|
|
ff_cbs_fragment_uninit(ctx->cbc, au);
|
|
return err;
|
|
}
|
|
|
|
static void h264_metadata_close(AVBSFContext *bsf)
|
|
{
|
|
H264MetadataContext *ctx = bsf->priv_data;
|
|
ff_cbs_close(&ctx->cbc);
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(H264MetadataContext, x)
|
|
static const AVOption h264_metadata_options[] = {
|
|
{ "aud", "Access Unit Delimiter NAL units",
|
|
OFFSET(aud), AV_OPT_TYPE_INT,
|
|
{ .i64 = PASS }, PASS, REMOVE, 0, "aud" },
|
|
{ "pass", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PASS }, .unit = "aud" },
|
|
{ "insert", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = INSERT }, .unit = "aud" },
|
|
{ "remove", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE }, .unit = "aud" },
|
|
|
|
{ "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
|
|
OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
|
|
{ .i64 = 0 }, 0, 65535 },
|
|
|
|
{ "video_format", "Set video format (table E-2)",
|
|
OFFSET(video_format), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 7 },
|
|
{ "video_full_range_flag", "Set video full range flag",
|
|
OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 1 },
|
|
{ "colour_primaries", "Set colour primaries (table E-3)",
|
|
OFFSET(colour_primaries), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 255 },
|
|
{ "transfer_characteristics", "Set transfer characteristics (table E-4)",
|
|
OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 255 },
|
|
{ "matrix_coefficients", "Set matrix coefficients (table E-5)",
|
|
OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 255 },
|
|
|
|
{ "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
|
|
OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 6 },
|
|
|
|
{ "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
|
|
OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
|
|
{ .i64 = 0 }, 0, UINT_MAX },
|
|
{ "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
|
|
OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, 1 },
|
|
|
|
{ "crop_left", "Set left border crop offset",
|
|
OFFSET(crop_left), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, H264_MAX_WIDTH },
|
|
{ "crop_right", "Set right border crop offset",
|
|
OFFSET(crop_right), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, H264_MAX_WIDTH },
|
|
{ "crop_top", "Set top border crop offset",
|
|
OFFSET(crop_top), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, H264_MAX_HEIGHT },
|
|
{ "crop_bottom", "Set bottom border crop offset",
|
|
OFFSET(crop_bottom), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, H264_MAX_HEIGHT },
|
|
|
|
{ "sei_user_data", "Insert SEI user data (UUID+string)",
|
|
OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL } },
|
|
|
|
{ "delete_filler", "Delete all filler (both NAL and SEI)",
|
|
OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1 },
|
|
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVClass h264_metadata_class = {
|
|
.class_name = "h264_metadata_bsf",
|
|
.item_name = av_default_item_name,
|
|
.option = h264_metadata_options,
|
|
.version = LIBAVCODEC_VERSION_MAJOR,
|
|
};
|
|
|
|
static const enum AVCodecID h264_metadata_codec_ids[] = {
|
|
AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
|
|
};
|
|
|
|
const AVBitStreamFilter ff_h264_metadata_bsf = {
|
|
.name = "h264_metadata",
|
|
.priv_data_size = sizeof(H264MetadataContext),
|
|
.priv_class = &h264_metadata_class,
|
|
.init = &h264_metadata_init,
|
|
.close = &h264_metadata_close,
|
|
.filter = &h264_metadata_filter,
|
|
.codec_ids = h264_metadata_codec_ids,
|
|
};
|