From 8a14d51b8bab63d23fac2ac05aead590b4178408 Mon Sep 17 00:00:00 2001 From: Mark Thompson Date: Fri, 1 Jan 2021 21:35:15 +0000 Subject: h264_metadata_bsf: Refactor the filter function into smaller parts --- libavcodec/h264_metadata_bsf.c | 326 +++++++++++++++++++++++------------------ 1 file changed, 180 insertions(+), 146 deletions(-) (limited to 'libavcodec/h264_metadata_bsf.c') diff --git a/libavcodec/h264_metadata_bsf.c b/libavcodec/h264_metadata_bsf.c index 6badb97b9e..34f032624e 100644 --- a/libavcodec/h264_metadata_bsf.c +++ b/libavcodec/h264_metadata_bsf.c @@ -56,6 +56,7 @@ typedef struct H264MetadataContext { int done_first_au; int aud; + H264RawAUD aud_nal; AVRational sample_aspect_ratio; @@ -91,6 +92,59 @@ typedef struct H264MetadataContext { } H264MetadataContext; +static int h264_metadata_insert_aud(AVBSFContext *bsf, + CodedBitstreamFragment *au) +{ + H264MetadataContext *ctx = bsf->priv_data; + int primary_pic_type_mask = 0xff; + int err, i, j; + + 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 + }; + + 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"); + return AVERROR_INVALIDDATA; + } + + ctx->aud_nal = (H264RawAUD) { + .nal_unit_header.nal_unit_type = H264_NAL_AUD, + .primary_pic_type = j, + }; + + err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD, + &ctx->aud_nal, NULL); + if (err < 0) { + av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n"); + return err; + } + + return 0; +} + static int h264_metadata_update_sps(AVBSFContext *bsf, H264RawSPS *sps) { @@ -322,160 +376,51 @@ static int h264_metadata_update_side_data(AVBSFContext *bsf, AVPacket *pkt) return 0; } -static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt) +static int h264_metadata_handle_display_orientation(AVBSFContext *bsf, + AVPacket *pkt, + CodedBitstreamFragment *au, + int seek_point) { H264MetadataContext *ctx = bsf->priv_data; - CodedBitstreamFragment *au = &ctx->access_unit; - int err, i, j, has_sps; - H264RawAUD aud; - - err = ff_bsf_get_packet_ref(bsf, pkt); - if (err < 0) - return err; - - err = h264_metadata_update_side_data(bsf, pkt); - if (err < 0) - goto fail; - - err = ff_cbs_read_packet(ctx->input, au, pkt); - 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(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; - - 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 = (H264RawAUD) { - .nal_unit_header.nal_unit_type = H264_NAL_AUD, - .primary_pic_type = j, - }; - - err = ff_cbs_insert_unit_content(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->done_first_au)) { - err = ff_cbs_sei_add_message(ctx->output, au, 1, - SEI_TYPE_USER_DATA_UNREGISTERED, - &ctx->sei_user_data_payload, NULL); + SEIRawMessage *message; + int err; + + message = NULL; + while (ff_cbs_sei_find_message(ctx->output, au, + SEI_TYPE_DISPLAY_ORIENTATION, + &message) == 0) { + H264RawSEIDisplayOrientation *disp = message->payload; + int32_t *matrix; + + matrix = av_malloc(9 * sizeof(int32_t)); + if (!matrix) + return AVERROR(ENOMEM); + + av_display_rotation_set(matrix, + disp->anticlockwise_rotation * + 180.0 / 65536.0); + av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip); + + // If there are multiple display orientation messages in an + // access unit, then the last one added to the packet (i.e. + // the first one in the access unit) will prevail. + err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, + (uint8_t*)matrix, + 9 * sizeof(int32_t)); if (err < 0) { - av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI " - "message to access unit.\n"); - goto fail; + av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted " + "displaymatrix side data to packet.\n"); + av_free(matrix); + return AVERROR(ENOMEM); } } - if (ctx->delete_filler) { - for (i = au->nb_units - 1; i >= 0; i--) { - if (au->units[i].type == H264_NAL_FILLER_DATA) { - ff_cbs_delete_unit(au, i); - continue; - } - } - + if (ctx->display_orientation == REMOVE || + ctx->display_orientation == INSERT) { ff_cbs_sei_delete_message_type(ctx->output, au, - SEI_TYPE_FILLER_PAYLOAD); + SEI_TYPE_DISPLAY_ORIENTATION); } - if (ctx->display_orientation != PASS) { - SEIRawMessage *message = NULL; - while (ff_cbs_sei_find_message(ctx->output, au, - SEI_TYPE_DISPLAY_ORIENTATION, - &message) == 0) { - H264RawSEIDisplayOrientation *disp = message->payload; - int32_t *matrix; - - matrix = av_malloc(9 * sizeof(int32_t)); - if (!matrix) { - err = AVERROR(ENOMEM); - goto fail; - } - - av_display_rotation_set(matrix, - disp->anticlockwise_rotation * - 180.0 / 65536.0); - av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip); - - // If there are multiple display orientation messages in an - // access unit, then the last one added to the packet (i.e. - // the first one in the access unit) will prevail. - err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, - (uint8_t*)matrix, - 9 * sizeof(int32_t)); - if (err < 0) { - av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted " - "displaymatrix side data to packet.\n"); - av_free(matrix); - goto fail; - } - } - - if (ctx->display_orientation == REMOVE || - ctx->display_orientation == INSERT) { - ff_cbs_sei_delete_message_type(ctx->output, au, - SEI_TYPE_DISPLAY_ORIENTATION); - } - } if (ctx->display_orientation == INSERT) { H264RawSEIDisplayOrientation *disp = &ctx->display_orientation_payload; @@ -516,7 +461,7 @@ static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt) } } - if (has_sps || !ctx->done_first_au) { + if (seek_point) { if (!isnan(ctx->rotate)) { disp->anticlockwise_rotation = (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate @@ -540,9 +485,98 @@ static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt) if (err < 0) { av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation " "SEI message to access unit.\n"); + return err; + } + } + } + + return 0; +} + +static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt) +{ + H264MetadataContext *ctx = bsf->priv_data; + CodedBitstreamFragment *au = &ctx->access_unit; + int err, i, has_sps, seek_point; + + err = ff_bsf_get_packet_ref(bsf, pkt); + if (err < 0) + return err; + + err = h264_metadata_update_side_data(bsf, pkt); + if (err < 0) + goto fail; + + err = ff_cbs_read_packet(ctx->input, au, pkt); + 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(au, 0); + } else { + if (ctx->aud == INSERT) { + err = h264_metadata_insert_aud(bsf, au); + if (err < 0) 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; + } + } + + // The current packet should be treated as a seek point for metadata + // insertion if any of: + // - It is the first packet in the stream. + // - It contains an SPS, indicating that a sequence might start here. + // - It is marked as containing a key frame. + seek_point = !ctx->done_first_au || has_sps || + (pkt->flags & AV_PKT_FLAG_KEY); + + if (ctx->sei_user_data && seek_point) { + err = ff_cbs_sei_add_message(ctx->output, au, 1, + SEI_TYPE_USER_DATA_UNREGISTERED, + &ctx->sei_user_data_payload, NULL); + if (err < 0) { + av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI " + "message to access unit.\n"); + goto fail; + } + } + + if (ctx->delete_filler) { + for (i = au->nb_units - 1; i >= 0; i--) { + if (au->units[i].type == H264_NAL_FILLER_DATA) { + ff_cbs_delete_unit(au, i); + continue; } } + + ff_cbs_sei_delete_message_type(ctx->output, au, + SEI_TYPE_FILLER_PAYLOAD); + } + + if (ctx->display_orientation != PASS) { + err = h264_metadata_handle_display_orientation(bsf, pkt, au, + seek_point); + if (err < 0) + goto fail; } err = ff_cbs_write_packet(ctx->output, pkt, au); -- cgit v1.2.3